This class contains interactive video distribution processes, systems, and
elements thereof, which are characterized by point-to-multipoint
system configurations, and which are used for the unidirectional
distribution or delivery of motion video data resulting from interactions
between systems operators (access or service providers) or
users (subscribers) and systems elements. These
systems include dedicated communications systems, such
as television distribution systems, which primarily distribute
or deliver motion video data in the manner indicated, but
which may, in addition, provide a framework for
further, diverse data communications or services in either
unidirectional or bidirectional form. Typically, system
operators interface with transmitter-side elements or users
interface with receiver-side elements in order to facilitate, through
interaction with such elements, the dynamic control of
data processing or data flow at various points in the systems. This
interaction is typically occasional or intermittent in nature.
SCOPE OF THE CLASS
(1)
Note. This class includes subject matter directed
to the transmission of video data. Systems which are concerned
with the transmission of nonvideo data, such as systems
which provide audio data or data in the generic sense, are
classified elsewhere. See the Search Class notes below.
(2)
Note. This class includes subject matter directed
to the transmission of motion video data. Systems which
are solely concerned with the delivery of still video data or picture
data, such as facsimile systems, are classified
elsewhere. See the Search Class notes below.
(3)
Note. This class is directed to the unidirectional
transmission of motion video data. Systems concerned with
the bidirectional transmission of motion video data, such
as video conference systems, are classified elsewhere. See
the Search Class notes below.
(4)
Note. This class includes systems which are characterized
by point-to-multipoint network architectures with
point-to-multipoint connectivity. Systems
which are solely concerned with the delivery of motion video data
through discrete point-to-point connections, such
as interconnected computer networks, are classified elsewhere. See
the Search Class notes below.
(5)
Note. This class is directed to systems which enable
occasional or intermittent user interaction. Systems which
fundamentally require frequent or continuous user interaction are
classified elsewhere. See the Search Class notes below.
(6)
Note. This class is limited to interactive video
distribution processes and systems. Claimed subject matter
which is directed to particular receiver details which do not facilitate
interactive video distribution, such as television receiver
signal processing circuitry, are classified elsewhere. See the
Search Class notes below.
Communications: Electrical, for telemetering, condition responsive
indicating systems, selective systems, and repeaters
in unspecified type communication lines or channels.
Computer Graphics Processing and Selective Visual
Display Systems, appropriate subclasses for user interface features
and functions which are not particularly directed to interactive
video distribution systems.
Television, appropriate subclasses for television cameras, special
applications, receiver monitoring, testing, and
measuring systems, bandwidth reduction systems, signal
formatters, image signal processing circuitry, and
displays.
Telecommunications, for generic modulated carrier wave communication systems, particularly
subclass 2.01 for audience survey or program distribution use
accounting, and subclasses 3.01-3.06
for wireless modulated carrier wave distribution system.
Data Processing: Financial, Business
Practice, Management, or Cost/Price Determination, appropriate subclasses for business methods and particularly
subclasses 26.1 through 27.2for electronic shopping.
Data Processing: Database, Data
Mining, and File Management or Data Structures, particularly
subclasses 609 through 686for database maintenance including backup synchronization, subclasses
687 through 704 for database integrity, subclasses 781
through 789 for access control to a database or file in a computer
environment, subclasses 790 through 812 for database design
including data structures and database structure management, subclasses
813 through 820 for garbage collection in database environments, and
subclasses 821 through 831 for file management, file systems, and
file directory structures.
Electrical Computers and Digital Processing Systems: Multiple
Computer or Process Coordinating, particularly
subclasses 217 through 219for systems which provide remote data access using
interconnected networks or by providing access to remote server.
SECTION III - GLOSSARY
ACCESS
Any means of establishing logical or physical communication
with a computer or communications system. Also, any
means of obtaining the use of such a system or any actions that
result in a flow of information involving such a system.
AMPLIFIER
A unidirectional device that is capable of delivering
an enlargement of the waveform of the electric current, voltage, or
power supplied to it.
ANTENNA
That part of a transmitting or receiving system that
is designed to radiate or to receive electromagnetic waves, such
as radio waves.
AUDIO
Pertaining to frequencies corresponding to a normally audible
sound wave. Note: These frequencies range roughly
from 15 Hz to 20,000 Hz.
BANDWIDTH
The range of frequencies within which performance, with
respect to some characteristic, falls within specific limits. For
example, the specified frequency range over which the amplitude
response does not vary more than a defined amount. Bandwidth
is commonly defined at the points where the response is 3 dB less
than the reference value (0.707 root-mean-square
voltage ratio). In broadband networks, the
frequency range that a component, circuit, or
system passes or uses. Also, the range of frequencies, expressed
in hertz, that can pass over a given channel. For
example, a television channel typically occupies a bandwidth
of 6,000,000 Hz (6 MHz), and cable
systems typically occupy 5-300 MHz or higher of the electromagnetic
spectrum.
BLANKING INTERVAL
In television systems, the range of a composite
picture signal containing either vertical or horizontal synchronizing
information. This range is separate from the range containing
picture information.
BLOCK
To restrict the passage, progress, or
exchange of data.
BUFFER
A device in which data are stored temporarily, in
the course of transmission from one point to another and used to
compensate for a difference in the flow of data or time of occurrence
of events when transmitting data from one device to another. Also, the
act of such temporary storage of data.
CABLE
A transmission line or group of transmission lines mechanically
assembled into a complex flexible form. Note: The
conductors are insulated and are closely spaced and usually have
a common outer cover which may be an electric portion of the cable. In
communication cables, an insulated conductor or combination
of electric conductors that are insulated from each other. A shield
is usually provided. Further, an assembly of one or
more conductors within an enveloping protective sheath, constructed
to allow use of the conductors separately or in groups, such
as a coaxial cable or optical cable.
CATEGORY
Any of several fundamental and distinct classes to which
entities or concepts belong. Also, a division within
a system of classification.
CELLULAR
Of, relating to, or consisting of cells. In
a radio frequency system, that which characterizes a system
in which a geographical area is divided into small sections, each
served by a transmitter of limited range so that any available radio
frequency channel can be used in different parts of the area simultaneously.
CHANNEL
A single path for transmitting electric signals, usually
in distinction from other parallel paths. A band of frequencies. Note: The
word "path" is to be interpreted in a broad sense
to include separation by frequency division or time division. The
term "channel" may signify either a one-way
path, providing transmission in one direction only, or
a two-way path, providing transmission in two directions.
CLIENT
The requesting device in a communications network. In a
client-server network, for example, a
user interface could reside in the client workstation while the
storage and retrieval functions could reside in the server database.
CLIP
A portion of motion video material consisting of plural fields
or frames of video data.
COAX (COAXIAL CABLE)
A two-conductor (center conductor, shield
system), concentric, constant impedance
transmission line used as the trunk medium in the baseband system. In
broadband networks, a cable with two conductors where one
completely surrounds the other. Coax cables are unbalanced transmission
lines that have an outer conductor that shields the center conductor
from electrostatic interference. The two conductors are
spaced by an insulating dielectric that, depending on the
mechanical and material configuration, affects the speed, attenuation, and impedance
of transmission.
COMMERCIAL
An advertisement provided within broadcast or point-to-point
networks.
CONTROL
To regulate the passage, progress, or
exchange of data.
DATA
Any representation of a digital or analog quantity to which
meaning has been assigned. A representation of facts, concepts, or
instructions, in a manner suitable for communication, interpretation, or
processing by humans or by automatic means.
DELIVERY
The act of sending something, such as motion
video data, to an intended destination.
DEMOGRAPHICS
The statistical characteristics of human populations, such
as age or income, used especially to identify markets.
DIPLEX FILTER
A filter having a low pass and a high pass filter that divide
the frequency spectrum into two separate frequency bands that do
not overlap. The diplex filter allows the placement of
duplex signals onto a cable by the use of frequency division multiplexing.
DISTRIBUTION
A general term used, by reason of specific physical
or electrical characteristics, to denote application or restriction
of the modified term, or both, to that part of an
electrical system used for conveying energy to the point of utilization
from a source or from one or more main receiving stations.
ELECTRONIC PROGRAM GUIDE (EPG)
A display interface which allows user s interaction with a
program grid having intersecting row(s) and column(s) of
video program information.
ENCRYPTION
The process of encoding data to prevent unauthorized access, especially
during transmission. Encryption is usually based on a key
that is essential for decoding.
FIBER (OPTICAL CABLE)
Fiber: any filament or fiber, made
of dielectric materials, that guides light, whether
or not it is used to transmit signals. Optical cable: a
fiber, multiple fibers, or fiber bundle in a structure
fabricated to meet optical, mechanical, and environmental
specifications which is used for the transmission of signals.
GENRE
A category of video composition characterized by a particular
style, form, or content.
GEOGRAPHIC
Belonging to or characteristic of a particular region.
HEADEND
In broadband networks, the central location
that has access to signals traveling in both inbound and outbound
directions. The logical root of the broadband coaxial cable
system.
INTERMEDIATE FREQUENCY (IF)
A frequency to which a signal wave is shifted locally
as an intermediate step in transmission or reception.
LOCAL OSCILLATOR
An oscillator in a superheterodyne circuit whose output is
mixed with the received signal to produce a sum or difference frequency
equal to the intermediate frequency of the receiver.
MESSAGE
In telecommunications, a combination of characters
and symbols transferred from one point to another.
MICROWAVE
Pertaining to the portion of the radio frequency spectrum
above 1 GHz.
MODEM
A contraction of MOdulator-DEModulator, an
equipment that connects data terminal equipment to a communication
line. In broadband networks, a modulator-demodulator
device. The modulator encodes digital information onto
an analog carrier signal by varying the amplitude, frequency, or
phase of that carrier. The demodulator extracts digital
information from a similarly modified carrier. A modem
transforms digital signals into a form suitable for transmission
over an analog medium.
MONITORING
In communications, the process of observing
or tracking system activities.
NEAR VIDEO-ON-DEMAND (NVOD)
A programming event that is provided upon request, in which
the event is broadcast on plural channels in time-staggered
intervals. These events are distributed to all subscribers, but
enabled on an individual basis through an interactive process. Due
to the mode of distribution, requests can be processed "near
on-demand", with a delay which is inversely
proportional to the broadcast interval.
NETWORK
A series of points interconnected by communication channels. Also, any
set of devices or subsystems connected by links joining (directly
or indirectly) a set of terminal nodes. Also, an
arrangement of components or nodes and interconnecting branches.
NOISE
In data transmissions, generally, an
undesired disturbance within the useful frequency band. Note : undesired
disturbances within the useful frequency band produced by other
services may be called interference. In broadband networks, an
unwanted signal in a communications system. White noise (or
random noise) is random energy (e.g., shot
noise and thermal noise) that has a uniform distribution
of energy across the bandpass. The analogy for white noise
is white light. Johnson noise (thermal) is
the noise generated by electron movement (current through
a resistor) above absolute zero. The noise level
is proportional to temperature. Shot noise is the type
of unrandom noise generated when current flows across an abrupt
junction. Shot noise is characteristic of semiconductor
devices.
PAY-PER-VIEW (PPV)
A programming event that is provided upon request, in which
the event is broadcast on a particular channel at a particular time. These
events are distributed to all subscribers, but enabled
on an individual basis through an interactive process.
PERSONAL COMPUTER (PC)
A system, containing a host and a limited number
of peripherals designed to be used in the home or in small offices, that
enables individuals to perform a variety of computing or word-processing
functions or both, and that typically is of a size permitting
it and its peripherals to be located on a table surface. Note: Other
definitions given in product standards or applicable regulations may
take precedence. Alternatively, a single-user
microcomputer designed for personally controllable applications.
PERSONAL IDENTIFICATION NUMBER (PIN)
A unique code number assigned, as with automatic
teller machine cards, to the authorized user.
POLARIZATION
That property of a radiated electromagnetic wave describing
the time-varying direction and amplitude of the electric
field vector; specifically, the figure traced
as a function of time by the extremity of the vector at a fixed
location in space, as observed along the direction of propagation. Note: In
general, the figure is elliptical and it is traced in a
clockwise or counterclockwise sense. The commonly referenced
circular and linear polarizations are obtained when the ellipse
becomes a circle or a straight line, respectively. Clockwise
sense rotation of the electric vector is designated right-hand polarization
and counterclockwise sense rotation is designated left-hand
polarization.
POLL
In data transmission, a flexible, systematic
method, centrally controlled for permitting stations on
a multipoint circuit to transmit without contending for the line. Also, a
method for presenting questions to users in order to obtain information
for analysis.
PROFILE
For an individual, a concise biographical sketch, a
measure of the extent to which one exhibits traits or abilities, or
a measure of one s likes and dislikes (perhaps based on
historical data).
PROGRAM
A sequence of signals transmitted for entertainment or information.
RECEIVER
The apparatus employed to accept data from a communications
system.
REPEATER
A combination of apparatus for receiving either one-way
or two-way communication signals and delivering corresponding
signals which are either amplified, reshaped, or
both. A repeater for one-way communication signals
is termed a "one-way repeater" and one
for two-way communication signals a "two-way
repeater" .
SATELLITE
A manufactured object or vehicle intended to orbit the earth
and to engage in the reception and transmission of communication
signals.
SCRAMBLE
To disarrange the elements of a transmission in order
to make it unintelligible to interception.
SERVER
In a network, a device or computer system that
is dedicated to providing specific facilities to other devices attached
to the network. Contrast: Client.
SET-TOP BOX (STB)
A device that converts a cable television signal to an input
signal to the television set. In some cases, set-top boxes
can be used to access the World Wide Web.
SPLITTER
Splitters divide or combine power. The power
division causes an insertion loss and a small amount of internal loss
that contributes to the attenuation of the signals passing through
the device. The splitter has a common port and split port(s).
STILL (VIDEO)
A portion of motion video material consisting of a single
field or frame of video data.
SUBSCRIBER
One who uses a communication or signaling service. Equipment
is typically installed at a subscriber s premises to enable the
reception, and perhaps the transmission, of communication
signals.
SWITCH
To establish communication channels among two or more
switch interfaces at customers demand.
SYNC PULSE
In television, signals employed for synchronizing
scanning that occur at rates related to the line and field frequencies. In
a television receiver, sync pulses are used to synchronize
the deflection generators.
TAP
In broadband networks, a passive device in the
feeder system that provides a connection between the drop cable
and the feeder. The tap is the principle means of access
to the cable system by the user. It removes a portion of
the signal power from the distribution line and delivers it to the
drop line. The amount of power tapped off the main line
depends on the input power to the tap and the attenuation value
of the tap. Only the information signal (and not
60 Hz power) goes to the outlet ports.
TELETEXT
A form of videotex that allows users to receive textual or
pictorial material via broadcast signals interpreted by a spatial
decoder attached to a television set. Contrast: Viewdata.
THEME
A subject or topic of artistic representation.
TRANSMISSION
The electrical transfer of a signal, message, or
other form of intelligence from one location to another.
TRANSMITTER
A device or circuit that generates high-frequency
electric energy, controlled or modulated, which
can be radiated by an antenna.
UNIFORM RESOURCE LOCATOR (URL)
An address for a resource on the Internet. URLs
are used by Web browsers to locate Internet resources. A
URL specifies the protocol to be used in accessing the resource (such
as http: for a World Wide Web page or ftp: for
an FTP site), the name of the server on which
the resource resides (such as //www.uspto.gov), and, optionally, the
path to a resource (such as an HTML document or a file
on that server).
VERTICAL BLANKING INTERVAL (VBI)
The time required for the electron beam in a raster-scan display
to perform a vertical retrace.
VIDEO-ON-DEMAND (VOD)
A programming event that is provided upon request, in which
the event is delivered "on-demand" (with
negligible delay). These events are delivered
to individual subscribers through an interactive process.
VIDEO SIGNAL
The signal sent from a source to a display. The
signal can include horizontal and vertical synchronization signals, as
well as image information.
VIDEOCASSETTE RECORDER (VCR)
A videotape recorder that uses videocassettes.
WIRELESS
Of, pertaining to, or characteristic
of communications that take place without the use of interconnecting
wires or cables, such as by radio, microwave, or
infrared.
This subclass is indented under the class definition. Subject matter comprising means or steps for the processing
of information regarding a charge for or a payment of a distributed
or delivered video program or other services.
(1)
Note. Examples of the other services include payment
for telephone or for external data network service through a video
distribution system.
Data Processing: Financial, Business Practice, Management, or
Cost/Price Determination, for automated electrical financial or business practices, and cost/price
determination.
This subclass is indented under subclass 1. Subject matter comprising means or steps for recording
or storing use-related information at a receiver-side
for subsequent billing purposes.
(1)
Note. This subclass includes means or steps for electronically
retrieving locally stored data for further processing at a central
distribution point, such as a headend.
This subclass is indented under subclass 2. Subject matter comprising means or steps for mechanically
recording use-related information for subsequent billing
purposes.
(1)
Note. This subclass includes systems which require
the inspection of, or interaction with, mechanical
devices used for the recording of use-related data for
subsequent billing purposes.
This subclass is indented under subclass 1. Subject matter comprising means or steps for recording
or storing use-related information at an intermediate system
location for subsequent billing purposes.
This subclass is indented under subclass 1. Subject matter comprising means or steps for detailing
payment for a distributed or delivered video program or a service.
This subclass is indented under subclass 5. Subject matter comprising means or steps for payment using
a card reader device capable of performing transaction authorizations
for the purchase of video programming or other services.
This subclass is indented under subclass 1. Subject matter comprising means or steps for facilitating
nonstandard or variable pricing based on the nature of a distributed
or delivered video program or service.
(1)
Note. This subclass includes systems which provide
a video program at a cost which is inversely proportional to an amount
of inserted messages or commercials.
USE SURVEYING OR MONITORING (E.G., PROGRAM
OR CHANNEL WATCHED):
This subclass is indented under the class definition. Subject matter comprising means or steps for observing
or tracking the activity of a user or a receiver function.
(1)
Note. This subclass includes metering, recording, or
indicating the activity of a user or the activity of a receiver
with respect to the activity of a user.
(2)
Note. This subclass includes subject matter directed
to the surveying or monitoring of the number of persons using a particular
receiver, as well as the number of receivers using a video
program or service, the length of time a video program
or service is being used, which of several programs or
services is being used, or which programs or services have
been provided.
Communications: Electrical,
subclasses 3.1 through 3.9for monitoring or supervisory features in selective
signaling systems and subclasses 870.01-870.44
for continuously variable indicating systems.
This subclass is indented under subclass 9. Subject matter comprising means or steps for sensing the
presence or movement of a user.
(1)
Note. For example, a device detects the presence
or absence of a user in a room or determines whether or not the
user s eyes are watching a television program, etc.
This subclass is indented under subclass 10. Subject matter comprising means or steps for monitoring
a user s presence by sensing the entry of an identification code.
(1)
Note. This subclass includes devices which accept
the entry of a personal identification number.
This subclass is indented under subclass 10. Subject matter comprising means or steps for sensing a
user by his or her effect on the environment near a receiver.
(1)
Note. This subclass includes devices which sense
a user s effect upon motion detection equipment, room temperature, and
light (as registered by a video camera).
This subclass is indented under subclass 9. Subject matter comprising means or steps for sensing, tracking, metering, or
recording user activity as a result of manual action.
This subclass is indented under subclass 14. Subject matter comprising means or steps for performing
a surveying or monitoring function by detecting receiver local oscillator
operation or shifts in received signal waves as a result of reception.
This subclass is indented under subclass 14. Subject matter comprising means or steps for performing
a centrally controlled surveying or monitoring function by systematically
permitting each receiver in a multipoint distribution system to
transmit use-related data without contending with other
receiver transmissions.
This subclass is indented under subclass 14. Subject matter comprising means or steps for performing
a surveying or monitoring function by detecting timing information
peculiar to a particular video signal source.
(1)
Note. Different television stations have different
relative phases for synchronizing pulses which enable remote detection
of electromagnetic radiation from the receiver indicative of the
station being received.
This subclass is indented under subclass 14. Subject matter comprising means or steps for performing
a surveying or monitoring function by detecting the presence of
an audio signal associated with a distributed or delivered video program.
This subclass is indented under subclass 14. Subject matter comprising means or steps for performing
a surveying or monitoring function by detecting a particular sequence
or pattern of data.
This subclass is indented under subclass 14. Subject matter comprising means or steps for performing
a surveying or monitoring function by detecting data encoded within
a video signal format.
(1)
Note. This subclass includes systems which detect
data encoded in the vertical or horizontal blanking intervals or
in any other portions which are capable of transferring or transporting
such data.
This subclass is indented under subclass 14. Subject matter comprising means or steps for recording
images and sound associated with a surveying or monitoring function
on a cartridge mounted magnetic tape.
This subclass is indented under the class definition. Subject matter comprising means or steps for monitoring
the broadcast of video programming to confirm transmission or reception.
(1)
Note. Usually, the advertisement or program, or
segment thereof, is verified by a comparison to a stored
sample which is made following a detected trigger (located, for
example, in the vertical blanking interval).
This subclass is indented under the class definition. Subject matter comprising means or steps for conferring
tickets or form authorizing a purchase or for conferring a representation
of an amount or sum of a video program or other service which is
placed at user s disposal.
(1)
Note. Coupons are usually physically produced for
future redemption. Tokens and credits are typically electronic
representations of quantities of programs or services.
Data Processing: Financial, Business Practice, Management, or
Cost/Price Determination,
subclasses 14.1 through 14.39for business methods related to the distribution
or redemption of coupons in general.
This subclass is indented under the class definition. Subject matter comprising means or steps for presenting
questions to users in order to obtain information for analysis.
(1)
Note. This subclass includes systems which electronically
gather information as a precursor to or following the presentation
of a particular video program or service, as well as in
the traditional sense, to record opinions on political issues
and the like.
Registers,
subclasses 51 through 56for voting machines, subclass 57 for registering
ballot boxes, and subclass 386 for voting machines controlled
by data bearing registers.
This subclass is indented under the class definition. Subject matter comprising means or steps for allowing
or preventing access to a video program or service, or
otherwise controlling access to a receiver device.
Telephonic Communications,
subclasses 143 through 155for telephone paystation check operated control
and subclasses 188-200 for call or terminal access alarm
or control.
Telecommunications,
subclass 26.1 for use or access blocking of a modulated carrier
wave communication in general and subclass 411 for radiotelephones
with privacy or lockout.
This subclass is indented under subclass 25. Subject matter comprising means or steps for controlling
or restricting access using a physical mechanism.
This subclass is indented under subclass 25. Subject matter comprising means or steps for controlling
or restricting access to all programs or services transmitted within
a recognized band of frequencies.
This subclass is indented under subclass 25. Subject matter comprising means or steps for controlling
or restricting access to a particular programming event.
(1)
Note. This subclass includes subject matter directed
toward preventing the presentation of programming deemed inappropriate
for minors. The criteria for restricting access may be
based on a ratings system, such as the MPAA rating system, or
on an extended data service.
This subclass is indented under subclass 25. Subject matter comprising means or steps for controlling
or restricting access as a function of a particular period of time
or a duration of time.
(1)
Note. This subclass includes systems which limit
receiver access to minors based on the time of day or a viewing allowance.
This subclass is indented under subclass 25. Subject matter comprising means or steps for controlling
access by requiring the entry of an authorization code.
(1)
Note. This subclass includes systems in which entry
of an authorization code is done through a user interface.
This subclass is indented under subclass 25. Subject matter comprising means or steps for restricting
access to a video signal by electrically masking or modifying the
signal, so as to obliterate the signal s information, or
otherwise by making the signal unintelligible.
(1)
Note. This subclass is provided for nominal recitation
of video encryption or scrambling in a video distribution system. See
the Search Class note below for specific detail of video scrambling
technique.
(2)
Note. This subclass includes subject matter directed
to preventing unauthorized access to video signals at all points in
a distribution system.
PROGRAM, MESSAGE, OR COMMERCIAL INSERTION
OR SUBSTITUTION:
This subclass is indented under the class definition. Subject matter comprising means or steps for inserting
or substituting a video program or other information beyond the
control of a viewer.
(1)
Note. The other information could include audio or
text message.
Data Processing: Presentation Processing
of Document, Operator Interface Processing, and
Screen Saver Display Processing, particularly
subclasses 716 through 726for operator interfaces for video sequencing or editing
This subclass is indented under subclass 32. Subject matter comprising means or steps for providing
a program or other information to a statistically relevant or regionally
appropriate group of viewers.
This subclass is indented under subclass 32. Subject matter comprising means or steps for the substitution
of local video programming or advertisements at regional distribution
points.
(1)
Note. This subclass includes subject matter directed
to the details of local commercial insertions in predefined program
stream breaks.
This subclass is indented under the class definition. Subject matter comprising means or steps for a user s interaction
with a receiver-side device to control the presentation
of display data.
(1)
Note. Such interaction facilitates the display of
data associated with distributed or delivered video programs or
services.
Data Processing: Financial, Business Practice, Management, or
Cost/Price Determination,
subclasses 1.1 through 45for use of operator interface in electronic financial
or business management systems and particularly subclasses 26.1
through 27.2 for electronic shopping systems using an operator
interface.
Data Processing: Presentation Processing
of Document, Operator Interface Processing, and
Screen Saver Display Processing,
subclasses 716 through 726for on screen video interface features and functions
that are not particularly directed to interactive video distribution
systems, and subclasses 856-862 for cursor manipulation
features.
This subclass is indented under subclass 37. Subject matter comprising means or steps for a user s
interaction with a display interface to facilitate video program
or channel selection.
This subclass is indented under subclass 38. Subject matter comprising means or steps for a user s
interaction with a program grid having intersecting row(s) and
column(s) of video program information.
(1)
Note. This subclass, and those subclasses
under this subclass, includes electronic program guide
display interfaces which typically provide a variety of information
within the context of video program information, such as channel, time, and
content information. Such interfaces often appear as electronic
equivalents of traditional printed program guides.
This subclass is indented under subclass 39. Subject matter comprising means or steps to display video
program information other than a program s name, channel
number, and time.
This subclass is indented under subclass 40. Subject matter comprising means or steps to display additional
information within a separate portion of a display interface.
This subclass is indented under subclass 39. Subject matter comprising means or steps for video program
information display arrangement and configuration.
(1)
Note. This subclass includes program guides which
allow for the display of video program information in alternative arrangements
or subsets in order to facilitate the dissemination of information
or the selection of programs.
This subclass is indented under subclass 44. Subject matter comprising means or steps describing particular
configurations based on genre, a theme, or a category.
(1)
Note. This subclass includes video program information
presented in such subsets as "sports", etc., as
well as such subsets as "college basketball" , etc.; that is, subsets
of information or any logical division of information.
This subclass is indented under subclass 44. Subject matter comprising means or steps for a particular
configuration based on one s likes and dislikes, as defined
by historical viewing data.
(1)
Note. This subclass includes video program information
presented in subsets defined by the profile of an individual, as opposed
to subsets defined exclusively by the attributes of video program
information.
This subclass is indented under subclass 44. Subject matter comprising means or steps user configuration
of video program information.
(1)
Note. This subclass is directed to subject matter
describing user-friendly systems which enable users to
arrange, add, or subtract display content to provide
personalized display interfaces.
This subclass is indented under subclass 39. Subject matter comprising means or steps for integrating
or displaying video program guide data from plural sources of such
data.
(1)
Note. This subclass includes systems which combine
video program guide data at a server or headend, where
such data is, for example, provided through diverse
transmission networks.
This subclass is indented under subclass 48. Subject matter comprising means or steps for integrating
and displaying data at a receiver.
(1)
Note. This subclass includes systems which combine
video program guide data at a receiver, where such data
is, for example, provided through diverse transmission
networks.
This subclass is indented under subclass 39. Subject matter comprising means or steps procedure by
which video program guide data is refreshed or made current.
(1)
Note. This subclass includes systems which periodically
transmit blocks of data covering successive time frames to provide
up-to-date data for interaction therewith by users.
This subclass is indented under subclass 39. Subject matter comprising means or steps for a functional
pointer which directs a user to an alternative data source which
is external to the distribution network.
(1)
Note. This subclass includes subject matter directed
to the incorporation of a URL, an address for a resource
on the Internet, into a video program guide to provide
a link to further information not provided by the guide.
This subclass is indented under subclass 39. Subject matter comprising means or steps for appearance
or function of features which enable a user to browse the information
provided by a video program guide.
(1)
Note. This subclass includes such navigational features
as cursor control, scrolling, links to further
pages of information, etc.
This subclass is indented under subclass 39. Subject matter comprising means or steps for a comparative
process by which specific video program guide data may be accessed.
(1)
Note. This subclass includes systems which incorporate
letter or keyword search capability and the like.
This subclass is indented under subclass 39. Subject matter comprising means or steps for particular
form or mechanism of transmission of video program guide data which
is provided to receivers.
(1)
Note. This subclass is directed to such transmission
features as data formats, whether data is transmitted in-band
or out-of-band, whether data is transmitted as
blocks of data, encoded, encrypted, etc.
Electrical Computers and Digital Processing Systems: Multiple
Computer or Process Coordinating, appropriate subclassesfor multiple computer data transferring.
Motion Video Signal Processing for Recording or
Reproducing,
subclasses 243 and 297 for providing local program guide in a
recording and/or reproduction device.
This subclass is indented under subclass 38. Subject matter comprising means or steps for a user s
interaction with a display interface having video channel information.
(1)
Note. This subclass includes channel guide display
interfaces which facilitate channel selection, and which
differ from electronic program guide display interfaces in that
they lack program-specific information.
This subclass is indented under subclass 38. Subject matter comprising means or steps for a user s
interaction with a video display interface which is configured to
allow channel selection by the entry or selection of an alphanumeric character
set.
(1)
Note. This subclass includes systems which allow
network or program provider selection by the entry or selection of
a call sign, and thus without the knowledge of particular
channel numbers.
This subclass is indented under subclass 38. Subject matter comprising means or steps for a user s
interaction with a display interface to arrange for the recording
of future video programs or to arrange for a reminder of the airing of
future video programs.
(1)
Note. This subclass includes systems which facilitate
the unattended recording of plural video programs.
Motion Video Signal Processing for Recording or
Reproducing,
subclasses 243 and 297 for providing local program guide in a
recording and/or reproduction device.
This subclass is indented under subclass 38. Subject matter comprising means or steps for providing
information to a display interface from sources of video information
connected through one or more transmission networks.
(1)
Note. This subclass includes program guide data or
other display interface data which has been gathered from plural sources
and combined at a headend for transmission to receiver devices. This subclass
also includes systems which combine program guide data or other display
interface data at receiver devices following transmission of such
data through diverse networks, such as cable and satellite
transmission networks.
This subclass is indented under subclass 37. Subject matter comprising means or steps for a user s
interaction with a video display interface to arrange for the selection
of a product.
(1)
Note. This subclass includes interactive video distribution
systems which further provide product information via a display
interface, typically through a hierarchical menu structure.
Data Processing: Financial, Business Practice, Management, or
Cost/Price Determination,
subclasses 26.1 through 27.2for electronic shopping systems using an operator
interface.
This subclass is indented under subclass 37. Subject matter comprising means or steps for a user s
interaction with a display interface to arrange for the selection
of a video program.
(1)
Note. This subclass includes systems which allow
for the selection of video programs, such as pay-per-view
or video-on-demand programs, through
a series of nested menus.
This subclass is indented under the class definition. Subject matter comprising means or steps for the distribution
or delivery of video programs through a system of limited-range transmitters
serving individual sections of a geographical area, such
that any available radio frequency channel can be used in different parts
of the area simultaneously.
Multiplex Communications,
subclass 312 for message broadcasting over free space and subclasses
328-350 for cellular communications using multiplexing
techniques.
Telecommunications, particularly
subclasses 3.01 through 3.06for general radio frequency signal distribution
details and subclasses 403-466 for radio telephone systems.
This subclass is indented under the class definition. Subject matter comprising means or steps for the distribution
or delivery of video programs through vehicles which orbit the earth
and engage in the reception and transmission of communication signals.
Telecommunications, particularly
subclass 3.02 for general radio frequency signal satellite broadcast receivers
and subclasses 12.1-13.4 for general
radio frequency signal space satellite repeaters.
This subclass is indented under subclass 63. Subject matter comprising means or steps for both the
upstream and downstream transmission of communication signals.
This subclass is indented under subclass 65. Subject matter comprising means or steps for upstream
communications via a terrestrial transmission network.
This subclass is indented under subclass 63. Subject matter comprising means or steps for details of
the upstream, land-based source of communication
signals in the satellite video distribution system.
This subclass is indented under subclass 63. Subject matter comprising means or steps for details of
the downstream, land-based termination for communication
signals in the satellite video distribution system.
This subclass is indented under subclass 68. Subject matter comprising means or steps for a particular
time-varying direction and amplitude of an electric field
vector, specifically the elliptical figure traced, in
a clockwise or counterclockwise sense, as a function of
time by the extremity of the vector at a fixed location in space, as
observed along the direction of propagation.
(1)
Note. This subclass includes systems having circular, straight
line, right-hand, left-hand, vertical, or
horizontal polarization.
This subclass is indented under subclass 68. Subject matter comprising means or steps for downstream
reception of signals from a satellite and the subsequent retransmission
of those signals to plural receiver devices.
This subclass is indented under subclass 68. Subject matter comprising means or steps for the setup
and operation of receiver antennas with respect to initialization, in
which an antenna is configured for operation; calibration, in
which an antenna s focus is finely tuned; and aiming, in
which an antenna is focused or refocused.
(1)
Note. This subclass includes systems which employ
a display interface to facilitate the initial configuration of newly
acquired antennas, as well as systems having antennas which
require constant refocusing, such as airborne antennas
on airplanes.
This subclass is indented under the class definition. Subject matter comprising means or steps for the distribution
or delivery of video programs, in which communication signals
are transmitted in that portion of the radio frequency spectrum
between 1 GHz and 30 GHz.
(1)
Note. This subclass includes systems which provide
a so-called Multichannel Multipoint Distribution Service (MMDS).
This subclass is indented under the class definition. Subject matter comprising means or steps for the distribution
or delivery of video programs, through a short distance
network or subnetwork.
(1)
Note. For example, local area video distribution
network in a dwelling or a campus.
This subclass is indented under subclass 74. Subject matter comprising means or steps for distribution
or delivery through a local network or subnetwork confined to a
single vehicle or closely related group of vehicles (e.g., in
a parking or a camp ground).
(1)
Note. This subclass includes systems which distribute
or deliver video through automobiles.
This subclass is indented under subclass 76. Subject matter comprising means or steps for passenger
receiver terminals located on the backs of airplane seats.
This subclass is indented under subclass 74. Subject matter comprising means or steps for distribution
or delivery through a local network or subnetwork confined to a
single building or closely related group of buildings.
This subclass is indented under subclass 78. Subject matter comprising means or steps for distribution
or delivery via the existing power network of a structure.
This subclass is indented under subclass 78. Subject matter comprising means or steps for controlling
the communication with, or communication between, diverse
elements within the structure.
(1)
Note. This subclass includes systems which, in
addition to distributing or delivering video programs, also
coordinate communications between such diverse elements as telephones, videocassette
recorders, stereo components, lighting and alarm
systems, kitchen appliances, etc.
This subclass is indented under subclass 78. Subject matter comprising means or steps for communications
within the distribution system that take place without the use of
interconnecting wires or cables (e.g., radio, microwave, or infrared
communications).
This subclass is indented under subclass 78. Subject matter comprising means or steps for a local, dedicated
computer system or central system that distributes or delivers video
programs.
(1)
Note. This subclass includes systems having servers
or headends which communicate through a separate network(s) with
another server(s), headend, information
provider(s), telephone exchange, etc.
This subclass is indented under subclass 78. Subject matter comprising means or steps for additional
services for customers of lodging establishments provided through
or initiated by way of a video distribution system.
This subclass is indented under subclass 83. Subject matter comprising means or steps for addition
of an integrated call bell system for signaling hospital staff.
This subclass is indented under subclass 78. Subject matter comprising means or steps for a terminating
device in the system which connects a subscriber to a source of
video programs.
(1)
Note. Such device enables the reception, and
perhaps the transmission, of communication signals.
This subclass is indented under the class definition. Subject matter comprising means or steps for the unidirectional
distribution or delivery of video programs at the request of a user.
(1)
Note. Programming events are provided following an
exchange in which a user interacts with a server or headend.
(2)
Note. This subclass includes systems in which system
operators interface with transmitter-side elements, and
users interface with receiver-side elements, in order
to facilitate, through interaction with such elements, the
dynamic control of data processing or data flow at various points
in the systems.
Electrical Computers and Digital Processing Systems: Multiple
Computer or Process Coordinating, particularly
subclasses 217 through 219for systems which provide remote data access using
interconnected networks or by providing access to remote server.
This subclass is indented under subclass 86. Subject matter comprising means or steps for providing
individual programming events "on-demand", or
with negligible delay to at least one user.
(1)
Note. This subclass includes systems which deliver
programming upon request, as opposed to those which broadcast
one or more programs and make possible the reception of such programs
upon request.
This subclass is indented under subclass 87. Subject matter comprising means or steps for control of
programming events in the manner in which one typically controls
the operation of a VCR, using control commands such as "pause", "fast-forward", "reverse", etc.
(1)
Note. This subclass includes systems which deliver
programming consistent with a VCR-like control command
following the transmission of the command to a server or headend.
This subclass is indented under subclass 88. Subject matter comprising means or steps for local execution
of VCR-like commands through the use of a receiver memory.
(1)
Note. Typically, a first-in, first-out
buffer memory is used to buffer incoming programming events in a
manner which is sufficient to accommodate changes in the displayed
data stream brought about by the control commands.
This subclass is indented under subclass 88. Subject matter comprising means or steps for a conspicuous
technique for transmitting the video programming data to accommodate VCR-like
functionality.
(1)
Note. One technique in digital transmission systems, when
simulating "fast-forward" or "reverse" functions, is
to transmit only MPEG-encoded I-frame data.
This subclass is indented under subclass 91. Subject matter comprising means or steps for transfer
of data to or retrieval of data from mass storage located at a server
or headend.
(1)
Note. This subclass includes systems which strip
data retrieved from mass storage onto an array of disk storage devices
to facilitate subsequent on-demand data retrieval, buffering, switching, and
transmission.
for details of the buffering and switching of data, following
the retrieval of data from mass storage, in servers or headends
used in user-requested video program systems.
This subclass is indented under subclass 91. Subject matter comprising means or steps for control of
server or headend system operations, particularly data
processing and data flow.
This subclass is indented under subclass 93. Subject matter comprising means or steps for buffering
and switching of data in a server or headend to facilitate transmission
over a network.
(1)
Note. This subclass includes systems which use first-in, first-out
buffers and ATM switches to facilitate transmission over a network.
Electrical Computers and Digital Processing Systems: Multiple
Computer or Process Coordinating, appropriate subclasses for buffering and switching in
multiple computer data transferring.
This subclass is indented under subclass 95. Subject matter comprising means or steps for channel or
bandwidth allocation based on server or network loads.
(1)
Note. This subclass includes subject matter directed
to overcoming congestion within servers due to demands on data access, etc., as
well as congestion within networks due to bandwidth constraints.
This subclass is indented under subclass 93. Subject matter comprising means or steps for assignment
or designation of data retrieval and data trasnsmission as it relates
to one or more users or one or more programming events.
(1)
Note. This subclass includes techniques for grouping
events or users together, as well as nonstandard techniques
for data retrieval and transmission.
This subclass is indented under subclass 87. Subject matter comprising means or steps for arrangement, composition, or
use of the components or nodes and interconnecting branches which
facilitate communications between the server or headend and receivers.
This subclass is indented under subclass 87. Subject matter comprising means or steps for a terminating
device in the system which connects a subscriber to a source of
video programs.
(1)
Note. Such device enables the transmission and reception
of communication signals.
This subclass is indented under subclass 86. Subject matter comprising means or steps for providing
a programming event upon request, in which the event is
broadcast on plural channels in time-staggered intervals.
(1)
Note. This subclass includes systems which distribute
programming to all subscribers, but enable the reception
of a given event channel on an individual basis through an interactive
process. Due to the mode of distribution, requests can
be processed "near on-demand", with
a delay which is inversely proportional to the broadcast interval.
This subclass is indented under subclass 101. Subject matter comprising means or steps for control of
programming events in the manner in which one typically controls
the operation of a VCR, using control commands such as "pause", "fast-forward", "reverse", etc.
(1)
Note. This subclass includes systems which execute
some VCR-like functions by switching channels and thus
providing access to alternative time frames of the same event.
This subclass is indented under subclass 86. Subject matter comprising means or steps for providing
a programming event upon request, in which the event is
broadcast on a particular channel at a particular time.
(1)
Note. This subclass includes systems which distribute
programming to all subscribers, but enable the reception
of a given event on an individual basis through an interactive process.
VIDEO DISTRIBUTION SYSTEM WITH UPSTREAM COMMUNICATION:
This subclass is indented under the class definition. Subject matter comprising means or steps for the unidirectional
distribution of video programs with either the upstream or bidirectional
transmission of further diverse data communications or services
in a network.
(1)
Note. This subclass includes systems in which system
operators interface with transmitter-side elements, and
users interface with receiver-side elements, in order
to facilitate, through interaction with such elements, the
dynamic control of data processing or data flow at various points
in the systems.
This subclass is indented under subclass 105. Subject matter comprising means or steps for bidirectional
communication of audio signals in a normally duplex arrangement
through a television distribution network.
This subclass is indented under subclass 105. Subject matter comprising means or steps for centralized
testing functions associated with the performance of a cable system.
This subclass is indented under subclass 105. Subject matter comprising means or steps for an alarm
system which uses a video distribution system for data communications.
This subclass is indented under subclass 105. Subject matter comprising means or steps for a connection
to a network external to the video distribution network, which
connection allows communication and data exchange with the external
network.
This subclass is indented under subclass 109. Subject matter comprising means or steps for a high bandwidth
modem operating across a cable television network.
(1)
Note. This subclass includes receivers having modems
in communication with the Internet.
This subclass is indented under subclass 109. Subject matter comprising means or steps for transmission
of a functional pointer which directs a user to an alternative data
source which is external to the distribution network.
(1)
Note. This subclass includes subject matter directed
to the transmission of a URL, an address for a resource
on the Internet.
This subclass is indented under subclass 112. Subject matter comprising means or steps for link transmission
within a video image.
(1)
Note. This subclass includes subject matter directed
to the transmission of a URL, an address for a resource
on the Internet, which is integrated into a video image, and
which functions as an active link.
This subclass is indented under subclass 105. Subject matter comprising means or steps for a central
system that distributes video programs. The central system
is the logical root of the distribution and delivery system.
(1)
Note. This subclass includes subject matter directed
to servers or headends in broadband coaxial cable systems having two-way
communications.
This subclass is indented under subclass 114. Subject matter comprising means or steps for the transfer
of data to storage or the retrieval of data from storage located
at a server or headend.
This subclass is indented under subclass 114. Subject matter comprising means or steps for the control
of server or headend system operations, particularly data
processing and data flow.
This subclass is indented under subclass 114. Subject matter comprising means or steps for a connection
at the server or headend which interfaces communications between
the server or headend and the transmission network.
This subclass is indented under subclass 105. Subject matter comprising means or steps for arrangement, composition, or
use of the components or nodes and interconnecting branches which
facilitate communications between the server or headend and receivers.
This subclass is indented under subclass 118. Subject matter comprising means or steps for a device, intermediate
to a server or headend and receiver devices, which is in
communication with and which provides services to either the headend
or server or the receiver devices.
(1)
Note. This subclass is directed to intermediate network
units which provide significant data processing, and thus
differ from less significant passive or active network components
which merely split or combine signal power or amplify or filter
signals.
(2)
Note. This subclass includes subject matter directed
to wireless local loop systems in which there are significant video
features.
This subclass is indented under subclass 119. Subject matter comprising means or steps for two-way
communications within the transmission network occurring solely
between the intermediate network unit and a receiver(s).
(1)
Note. This subclass includes systems having tuning
functions provided outside the home or tuning or program selection functions
for plural receivers consolidated in a single, external
device.
This subclass is indented under subclass 121. Subject matter comprising means or steps for upstream
communications via a public switched telephone network.
This subclass is indented under subclass 121. Subject matter comprising means or steps for upstream
communications without the use of interconnecting wires or cables.
(1)
Note. This subclass includes communication via radio, microwave, or
infrared.
This subclass is indented under subclass 121. Subject matter comprising means or steps for unwanted
signals in the useful frequency bands of the communications system.
(1)
Note. This subclass includes subject matter related
to noise produced by other communications services.
This subclass is indented under subclass 124. Subject matter comprising means or steps for the entry
of unwanted signals in transmission network in frequencies which
would otherwise remain free of signal energy.
(1)
Note. This subclass includes subject matter directed
to the noise problems associated with making useful previously unused
frequency bands for upstream communications.
This subclass is indented under subclass 118. Subject matter comprising means or steps for explicit
uses for the frequency spectrum covered by a given transmission
network.
(1)
Note. This subclass includes subject matter detailing
frequency bands for downstream and upstream communications, as
well as bands for other services, such as telephony.
This subclass is indented under subclass 118. Subject matter comprising means or steps for a transmission
network having connecting branches which are a hybrid of both optical fiber
cable and coaxial cable.
(1)
Note. This subclass includes broadband cable systems
which use optical fiber cable from the headend (as, for
example, trunk cables), and use coaxial
cable thereafter (as, for example, branch cables).
This subclass is indented under subclass 118. Subject matter comprising means or steps for providing
an electric power signal over the transmission network to energize
downstream elements.
This subclass is indented under subclass 105. Subject matter comprising a terminating device which connects
a subscriber to a source of video programs.
(1)
Note. Such device enables the transmission and reception
of communication signals.
This subclass is indented under subclass 131. Subject matter comprising means or steps for hardware
or software enhancements to receiver devices.
(1)
Note. This subclass includes subject matter directed
to extending the usefulness of receivers or expanding their functionality
through updates or modifications.
This subclass is indented under subclass 131. Subject matter comprising means or steps for receiver
devices in combination with (or in communication with) diverse
art devices.
(1)
Note. This subclass includes systems having receivers
in communication with personal computers, game players, VCRs, etc., for
the transmission of data or control signals in either direction. For example, a
receiver might function to control a VCR to initiate the predetermined
recording of a program.
Motion Video Signal Processing for Recording or
Reproducing, appropriate subclasses for locally performing recording
or reproduction operations, particularly
subclasses 314 through 325for video tape recording.
This subclass is indented under subclass 131. Subject matter comprising means or steps for receiver
devices having specific data storage characteristics.
(1)
Note. This subclass has subject matter directed to
particular types of storage, such as mass storage and cache
memory; particular features of storage, such as directories
and tables; or particular storage processes, such
as memory access.
This subclass is indented under the class definition. Subject matter comprising means or steps for the unidirectional
distribution of video programs through a network, in which
there is local interaction with a receiver, or with a data stream
through a receiver.
(1)
Note. This subclass includes systems in which system
operators interface with transmitter-side elements, and
users interface with receiver-side elements, in order
to facilitate, through interaction with such elements, the
dynamic control of data processing or data flow at various points
in the systems.
(2)
Note. Systems under this subclass include those which
cyclically and repeatedly transmit data streams of relevant video
data and other service data as small units or blocks. At
the receiver-side, users interact with these data streams
in a manner indicative of two-way interactive systems. However, given that
there are no upstream communications from the receiver-side, these
systems are often referred to as "simulated" two-way
or bidirectional communications systems.
This subclass is indented under subclass 135. Subject matter comprising means or steps for interactive
data or applications which are transmitted within the range of frequencies
used for the transmission of a video signal.
(1)
Note. This subclass includes systems which transmit
data within the video signal band but otherwise separate from video
signals themselves, as well as systems which encode data
within any useful portion of video signals.
This subclass is indented under subclass 136. Subject matter comprising means or steps for coding, extracting, processing, and
displaying coded character information.
(1)
Note. This subclass includes systems which receive
and display either textual or pictorial material coded and distributed
with video data. The material is often distributed as "pages" of
data which may be indexed or accessible in a hierarchical manner
through user interaction.
This subclass is indented under subclass 135. Subject matter comprising a terminating device which connects
a subscriber to a source of video programs.
(1)
Note. The device enables the reception of communication
signals.
This subclass is indented under subclass 139. Subject matter comprising means or steps for hardware
or software enhancements to receiver devices.
(1)
Note. This subclass includes subject matter directed
to extending the usefulness of receivers or expanding their functionality
through updates or modifications.
This subclass is indented under subclass 139. Subject matter comprising means or steps for receiver
devices in combination with (or in communication with) diverse
art devices.
(1)
Note. This subclass includes systems having receivers
in communication with personal computers, game players, VCRs, etc., for
the transmission of data or control signals in either direction. For example, a
receiver might function to control a VCR to initiate the predetermined
recording of a program.
Motion Video Signal Processing for Recording or
Reproducing, appropriate subclasses for locally performing recording
or reproduction operations, particularly
subclasses 314 through 325for video tape recording.
This subclass is indented under subclass 139. Subject matter comprising means or steps for receiver
devices having specific data storage characteristics.
(1)
Note. This subclass has subject matter directed to
particular types of storage, such as mass storage and cache
memory; particular features of storage, such as directories
and tables; or particular storage processes, such
as memory access.
This subclass is indented under the class definition. Subject matter comprising means or steps for the unidirectional
distribution of video programs, through a network.
(1)
Note. This subclass includes systems in which system
operators interface with transmitter-side elements in order
to facilitate, through interaction with such elements, the
dynamic control of data processing or data flow at various points in
the systems.
for details of headends used in one-way
distribution systems in which there is local interaction with a receiver
or with a data stream through a receiver.
This subclass is indented under subclass 144. Subject matter comprising means or steps for the transfer
of data to storage or the retrieval of data from storage located
at a headend.
This subclass is indented under subclass 144. Subject matter comprising means or steps for the control
of headend system operations, particularly data processing
and data flow.
This subclass is indented under subclass 144. Subject matter comprising means or steps for a connection
at the headend which interfaces communications between the headend
and the transmission network.
This subclass is indented under subclass 143. Subject matter comprising means or steps for arrangement, composition, or
use of the components or nodes and interconnecting branches which
facilitate communications between the headend and receivers.
Multiplex Communications,
subclasses 315 through 327for repeaters in multiplex communication over free
space; and subclasses 492, 501, and 502
for repeaters in frequency division and time division multiplex, respectively.
This subclass is indented under subclass 148. Subject matter comprising means or steps for providing
an electric power signal over the transmission network to energize
downstream elements.
This subclass is indented under subclass 143. Subject matter comprising means or steps for a terminating
device in the system which connects a subscriber to a source of
video programs.
(1)
Note. The device enables the reception of communication
signals.
through 142, for details of receivers used in one-way
distribution systems in which there is local interaction with the
receiver or with a data stream through the receiver.
This subclass is indented under subclass 151. Subject matter comprising means or steps for hardware
or software enhancements to receiver devices.
(1)
Note. This subclass includes subject matter directed
to extending the usefulness of receivers or expanding their functionality
through updates or modifications.
for programmable or upgradeable receiver features
found in one-way distribution systems in which there is local
interaction with the receiver or with a data stream through the receiver.
This subclass is indented under subclass 151. Subject matter comprising means or steps for receiver
devices in combination with (or in communication with) diverse
art devices.
(1)
Note. This subclass includes systems having receivers
in communication with personal computers, game players, VCRs, etc., for
the transmission of data or control signals in either direction.
For example, a receiver might function to control a VCR
to initiate the predetermined recording of a program.
for receivers in communication with diverse devices
found in one-way distribution systems in which there is local
interaction with the receiver or with a data stream through the receiver.
Motion Video Signal Processing for Recording or
Reproducing, appropriate subclasses for locally performing recording
or reproduction operations, particularly
subclasses 314 through 325for video tape recording.
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