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 [Search a list of Patent Appplications for class 710]   CLASS 710,ELECTRICAL COMPUTERS AND DIGITAL DATA PROCESSING SYSTEMS: INPUT/OUTPUT
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SECTION I - CLASS DEFINITION

This class provides, within a computer or digital data processing system, for the following subject matter:

A. Processes or apparatus for transferring data from one or more peripherals to one or more computers or digital data processing systems for the latter to process, store, or further transfer or for transferring data from the computers or digital data processing systems to the peripherals;

B. Processes or apparatus for interconnecting or communicating between two or more components connected to an interconnection medium (e.g., a bus) within a single computer or digital data processing system;

C. Processes or apparatus for preventing access to a shared resource of a computer or digital data processing system;

D. Processes or apparatus for granting access to a shared resource of a computer of digital data processing system by one of a plurality of components of the computer or digital data processing system by interrogating each of the components in a predetermined order;

E. Processes or apparatus for determining which of a plurality of components of a computer or digital data processing system contending for access to a shared resource shall be granted access at any one time based upon a predetermined criteria; and

F. Processes or apparatus for stopping, halting, or suspending a current processing function within a computer or digital data processing system.

(1) Note. This class is one of the generic classes for electrical computers and digital data processing systems and corresponding data processing processes including processes and apparatus for controlling operations of computers and digital data processing systems.
(2) Note. Classification herein requires more than nominal recitation of "peripheral devices," "peripherals," "input/output," or "I/O," or of intrasystem connections or communications.
(3) Note. Processes and apparatus wherein the peripherals are memories are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(4) Note. Although this class includes functions in which peripherals are addressed or accessed in a computer, internal elements and circuitry for memories are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(5) Note. Processes and apparatus for error detection and correction and fault detection and recovery, per se, are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(6) Note. Processes and apparatus for enhancing the security of peripherals and of computers and digital data processing systems, per se, are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(7) Note. Processes and apparatus for transferring data "directly" between memories of different computers are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(8) Note. Processes and apparatus for a specific end use of data are classified in the class for the external device. For example, processes and apparatus for processing, by a computer for control purposes, data from sensors is classified elsewhere. See the SEE OR SEARCH CLASS notes below.

SECTION II - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

235, Registers,   various subclasses for basic machines and associated indicating mechanisms for ascertaining the number of movements of various devices and machines, plus machines made from these basic machines alone (e.g., cash registers, voting machines), and in combination with various perfecting features, such as printers and recording means, and various data bearing record controlled systems.
326, Electronic Digital Logic Circuitry,   subclass 30 for bus or line terminating circuitry, and subclasses 62+ for generic digital logic, gate level interface circuitry.
340, Communications: Electrical,   subclasses 825 through 825.98for controlling one or more devices to obtain a plurality of results by transmission of a designated one of plural distinctive control signals over a smaller number of communication lines or channels, particularly subclasses 2.1-2.8 for path selection; subclasses 3.1-3.9 for communication systems where status of a controlled device is communicated, particularly subclass 3.51 for selective communication address polling control; subclasses 5.1-5.92 for security (e.g., authorization) in selective communication systems, particularly subclasses 5.22-5.25 for varying authorization control using programmable code; subclass 825.02 for tree or cascade selective communication, subclasses 825.2-825.21 for synchronizing selective communication systems; subclasses 825.52 and 825.53 for addressing in selective communication systems; and subclasses 825.57-825.69 for pulse responsive actuation in selective communication systems.
341, Coded Data Generation or Conversion,   subclasses 22+ for code conversion in transferring codes from a keyboard peripheral to a computer.
345, Computer Graphics Processing and Selective Visual Display Systems,   appropriate subclasses for selective electrical control of image data for display, including the transferring of data to be displayed via an input peripheral (e.g., keyboard, joystick, mouse, touch tablet, etc.) to a computer and subsequently transferring image data to a display peripheral via a display memory or display controller; various subclasses for the selective control of two or more light generating or light controlling display elements in accordance with a received image signal; and subclasses 1.1 through 111for visual display systems with selective electrical control including display memory organization and structure for storing image data and manipulating image data between a display memory and display peripheral.
358, Facsimile and Static Presentation Processing,   subclasses 1.1 through 618for transferring data to peripherals for presenting the data on a fixed medium (i.e., a hard copy).
358, Facsimile and Static Presentation Processing,   subclasses 400 through 304for transmitting data from a facsimile machine peripheral to a computer (e.g., by modem) for transmission over a telephone line to another computer (e.g., by modem) for transmission to another facsimile machine peripheral.
360, Dynamic Magnetic Information Storage or Retrieval,   appropriate subclasses for record carriers and systems wherein data are stored and retrieved by interaction with a medium and there is relative motion between a medium and a transducer, for example, magnetic disk drive devices and control thereof, per se.
361, Electricity: Electrical Systems and Devices,   subclasses 1+ for safety and protection of systems and devices.
365, Static Information Storage and Retrieval,   various subclasses, for addressable static singular storage elements or plural singular storage elements of the same type (i.e., the internal elements of memory, per se) particularly subclass 189.05 for buffering or latching data being read from or written to memory and subclass 230.08 for buffering and latching address data being employed to access memory.
369, Dynamic Information Storage or Retrieval,   various subclasses for record carriers and systems wherein data are stored and retrieved by interaction with a medium and there is relative motion between a medium and a transducer.
370, Multiplex Communications,   appropriate subclasses for the simultaneous transmission of two or more signals over a common medium such as time division multiplexing (TDM).
375, Pulse or Digital Communications,   various subclasses for generic pulse or digital communication systems and synchronization of clocking signals from input data.
377, Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,   various subclasses for generic circuits for pulse counting.
379, Telephonic Communications,   various subclasses for two-way electrical communication of intelligible audio data of arbitrary content over a link including an electrical conductor.
380, Cryptography,   appropriate subclasses for cryptographic electric signal modification in general.
381, Electrical Audio Signal Processing Systems and Devices,   various subclasses for wired one-way audio systems, per se.
382, Image Analysis,   various subclasses for operations performed on image data with the aim of measuring a characteristic of an image, detecting variations, detecting structures, or transforming the image data, and for procedures for analyzing and categorizing patterns present in image data.
388, Electricity: Motor Control Systems,   cross-reference art collection 907.5 for computer or processor control of motor acceleration or speed.
455, Telecommunications,   appropriate subclasses for modulated carrier wave communication, per se, and subclass 26.1 for subject matter which blocks access to a signal source or otherwise limits usage of modulated carrier equipment.
700, Data Processing: Generic Control Systems or Specific Applications,   subclasses 1 through 89for data processing control systems of the generic type (i.e., not limited to a particular application) and subclasses 90-306 for control systems controlling or controlled by a particular art device or environment.
701, Data Processing: Vehicles, Navigation, and Relative Location,   appropriate subclasses for applications of computers in vehicular and navigational environments.
702, Data Processing: Measuring, Calibrating, or Testing,   appropriate subclasses for applications of computers in measuring and testing.
704, Data Processing: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression,   subclasses 1+ for applications of computers in linguistics, subclasses 200+ for applications of computers in speech signal processing, and subclasses 500-504 for applications of computers in audio compression/decompression.
705, Data Processing: Financial, Business Practice, Management, or Cost/Price Determination,   appropriate subclasses for applications of computers and calculators in business and management environments.
706, Data Processing: Artificial Intelligence,   appropriate subclasses for artificial intelligence type computers and digital data processing systems.
707, Data Processing: Database and File Management or Data Structures,   appropriate subclasses for data processing apparatus and corresponding methods for the retrieval of data stored in a database or as computer files; or data processing means or steps wherein human perceptible elements of electronic information (i.e. text or graphics) are gathered, associated, created, formatted, edited, and prepared.
708, Electrical Computers: Arithmetic Processing and Calculating,   subclasses 1+ for hybrid computers; subclasses 100+ for calculators, digital signal processing, and arithmetical and logical processing, per se; and subclasses 800+ for electric, analog computers.
709, Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring,   appropriate subclasses for transferring data between a plurality of computers even if the transferring employs peripherals (e.g., modems, line adapters, etc.), particularly subclass 212 for computer-to-computer direct memory accessing.
711, Electrical Computers and Digital Processing Systems: Memory,   appropriate subclasses, for accessing or controlling memories that are peripherals, for caching data, for addressing combined with specific memory configurations (e.g., extended, expanded, dynamic, etc.) in a computer, and for generalized address forming in a computer.
712, Electrical Computers and Digital Processing Systems: Processing Architectures and Instruction Processing (e.g. processors),   appropriate subclasses for processing architectures including virtual processors; multiple-instruction-multiple-data (MIMD), vector, and array processors, and single-chip microprocessors; and for fetching, buffering, decoding, or executing instruction data for operations other than I/O (e.g., logic functions).
713, Electrical Computers and Digital Processing Systems: Support,   subclass 187 for computer program modification detection by cryptography, and subclass 188 for computer virus detection by cryptography.
714, Error Detection/Correction and Fault Detection/Recovery,   various subclasses for detecting or correcting errors in generic electrical pulse or pulse coded data and for detecting and recovering from faults of computers, digital data processing systems, and logic level based systems; particularly subclasses 712+ for transmission facility testing, subclasses 718+ for memory testing, subclasses 763+ for memory access block coding, subclass 43 for bus and I/O channel fault recovery, subclass 44 for peripheral fault recovery, and subclass 56 for bus or I/O channel error detection or notification.
726, Information Security,   subclasses 1 through 36for information security in computers or digital processing system.

SECTION III - GLOSSARY

BUS

A conductor used for transferring data, signals, or power.

COMPUTER

A machine that inputs data, processes data, stores data, and outputs data.

DATA

Representation of information in a coded manner suitable for communication, interpretation, or processing.

Address data - Data that represent or identify a source or destination.

Instruction data - Data that represent an operation and identify its operands, if any.

Status data - Data that represent conditions of data, computers, peripherals, memory, etc.

User data - Data other than address data, instruction data, or status data.

data processing

See PROCESSING, below.

DIGITAL DATA PROCESSING SYSTEM

An arrangement of processor(s) in combination with either memory or peripherals, or both, performing data processing.

ERROR

Manifestation of a fault as an undesired event that occurs when actual behavior deviates from the behavior that is required by initial specifications.

FAILURE

Manifestation of an error as a nonperformance of an expected system service as required by the initial specifications.

FAULT

A flaw in a functional unit (hardware or software).

INFORMATION

Meaning that a human being assigns to data by means of the conventions applied to that data.

MEMORY

A functional unit to which data can be stored and from which data can be retrieved.

PERIPHERAL

A functional unit that transmits data to or receives data from a computer to which it is coupled.

PROCESSING

Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting, and calculating (i.e., arithmetic operations or logical operations).

(1) Note. In this class, the glossary term data is used to modify processing in the term data processing; whereas the term digital data processing system refers to a machine performing data processing.
(2) Note. In an effort to avoid redundant constructions, in this class, where appropriate, the term address data processing is used in place of address data data processing.

PROCESSOR

A functional unit that interprets and executes instruction data.

RECOVERY

Responding to a fault in a system by either returning a system to a previous level of correct operation, achieving a degraded level of correct operation, or safely shutting down the system.

SECURITY

Extent of protection for system hardware, software, or data from maliciously caused destruction, unauthorized modification, or unauthorized disclosure.

SUBCLASSES

[List of Patents for class 710 subclass 1]    1INPUT/OUTPUT DATA PROCESSING:
 This subclass is indented under the class definition.  Subject matter comprising means or steps for transferring data from one or more peripherals to one or more computers or digital data processing systems for the latter to process, store, or further transfer or for transferring data from the computers or digital data processing systems to the peripherals.
(1) Note. Classification herein requires more than nominal recitation of "peripheral device," "peripheral," "input/output," "I/O," etc.
(2) Note. Processes and apparatus for code conversion in transferring codes from a keyboard peripheral to a computer or digital data processing system are classified elsewhere. Code conversion for control of image data for display-including the transferring of data to be displayed via an input peripheral (e.g., keyboard, joystick, mouse, touch tablet, etc.) to a computer or digital data processing system and subsequently transferring image data to a display peripheral via a display memory or display controller are classified elsewhere. Processes and apparatus for code in transmitting data from a facsimile peripheral to a computer (e.g., by a modem) for transmission over a telephone line to another computer (e.g., by a modem) for transmission to another facsimile peripheral are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(3) Note. Processes and apparatus for detecting or correcting errors in generic electrical pulse or pulse coded data transferred from or to peripherals and for detecting and recovering from faults of peripherals, particularly transmission facility testing, memory testing, memory access block coding, bus and I/O channel fault recovery, peripheral fault recovery, and bus or I/O channel error detection or notification are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(4) Note. Processes and apparatus for transferring data to output peripherals for presenting the data on a fixed medium (i.e., a hard copy) are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(5) Note. Processes and apparatus for transferring data between a plurality of computers even if the transferring employs peripherals (e.g., modems, line adapters) are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(6) Note. Processes and apparatus for accessing or controlling memories that are peripherals are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(7) Note. Processes and apparatus for furthering the security of peripherals are classified elsewhere. See the SEE OR SEARCH CLASSnotes below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

100+,for transferring data among memories, processors, and buses of a computer.

SEE OR SEARCH CLASS:

341, Coded Data Generation or Conversion,   subclasses 22+ for code conversion in transferring codes from a peripheral keyboard to a computer.
345, Computer Graphics Processing and Selective Visual Display Systems,   appropriate subclasses for selective electrical control of image data for display, including the transferring of data to be displayed via a peripheral input device (keyboard, joystick, mouse, touch tablet, etc.) to a computer and subsequently transferring image data to a peripheral display device via a display memory/display controller.
358, Facsimile and Static Presentation Processing,   subclasses 1.1 through 1.18for transferring data to peripherals for presenting the data on a fixed medium and subclasses 400 through 304 for transmitting data from a peripheral facsimile machine to a computer (e.g., by modem) for transmission over a telephone line to another computer (e.g., by modem) for transmission to another peripheral fax machine.
709, Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring,   appropriate subclasses for transferring data between a plurality of computers even if the transferring employs peripherals (e.g., modems, line adapters, etc.) particularly subclass 212 for computer-to-computer direct memory accessing.
711, Electrical Computers and Digital Processing Systems: Memory,   appropriate subclasses for accessing, controlling, storing or writing to, retrieving or reading from memories that are peripherals.
714, Error Detection/Correction and Fault Detection/Recovery,   various subclasses for detecting or correcting errors in generic electrical pulse or pulse coded data and for detecting and recovering from faults of computers, digital data processing systems, and logic level based systems; subclass 43 for bus and I/O channel fault recovery, subclass 44 for peripheral fault recovery, subclass 56 for bus or I/O channel error detection or notification, subclasses 712+ for transmission facility testing, subclasses 718+ for memory testing, and subclasses 763+ for memory access block coding,.
726, Information Security,   subclasses 1 through 36for information security in computers or digital processing system.
  
[List of Patents for class 710 subclass 2]    2Input/Output expansion:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for increasing the number of the peripherals that can be coupled to the digital data processing system or computer.
  
[List of Patents for class 710 subclass 3]    3Input/Output addressing:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for employing an identifier for the peripheral, digital data processing system or computer in order to transfer data therebetween.

SEE OR SEARCH CLASS:

711, Electrical Computers and Digital Processing Systems: Memory,   subclasses 1+ for addressing combined with specific memory configurations (e.g., extended, expanded, dynamic, etc.) in a digital data processing system, subclasses 100+ for generalized storage accessing and control in a digital data processing system, and subclasses 200+ for generalized address forming in a digital data processing system.
  
[List of Patents for class 710 subclass 4]    4Address data transfer:
 This subclass is indented under subclass 3.  Subject matter further comprising means or steps for transferring address data between the peripheral and digital data processing system or computer to ensure that associated user data are transferred to the intended peripheral and digital data processing system or computer.
  
[List of Patents for class 710 subclass 5]    5Input/Output command processing:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for fetching, buffering, decoding, or executing instruction data in order to transfer user data between the peripheral and digital data processing system or computer.
(1) Note. This and indented subclasses are directed to command processing for Input/Output operations. The processing control or the processing control for data transfer is classified elsewhere. See the SEE OR SEARCH CLASS notes below.

SEE OR SEARCH CLASS:

712, Electrical Computers and Digital Processing Systems: Processing Architectures and Instruction Processing (e.g., Processors),   subclasses 400+ for processing control, particularly subclass 405 for processing control for data transfer.
  
[List of Patents for class 710 subclass 6]    6Operation scheduling:
 This subclass is indented under subclass 5.  Subject matter further comprising means or steps for specifying the order in which the peripheral and digital data processing system or computer perform a function in order to transfer the user data between a peripheral and digital data processing system or computer.
  
[List of Patents for class 710 subclass 7]    7Concurrently performing Input/Output operation and other operation unrelated to Input/Output:
 This subclass is indented under subclass 5.  Subject matter further comprising means or steps for performing a non-Input/Output function while also transferring data between the peripheral and digital data processing system or computer.
  
[List of Patents for class 710 subclass 8]    8Peripheral configuration:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for assigning operating characteristics to a peripheral.

SEE OR SEARCH THIS CLASS, SUBCLASS:

104,for configuring by utilizing a hardware structure for providing the arrangement of the digital data processing system including characteristics of the digital data processing system"s components to a digital data processing system processor.

SEE OR SEARCH CLASS:

711, Electrical Computers and Digital Processing Systems: Memory,   subclasses 170+ for automatically determining or allocating memory space.
713, Electrical Computers and Digital Processing Systems: Support,   subclasses 1 , 2, and 100 for digital data processing system initialization and configuration at boot-time.
  
[List of Patents for class 710 subclass 9]    9Address assignment:
 This subclass is indented under subclass 8.  Subject matter further comprising means or steps for giving an identifier (i.e., address data) to the peripheral.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3,for input/output addressing.
  
[List of Patents for class 710 subclass 10]    10Configuration initialization:
 This subclass is indented under subclass 8.  Subject matter further comprising means or steps for automatically assigning an operating characteristic when the peripheral, digital data processing system, or computer is started or reset.
  
[List of Patents for class 710 subclass 11]    11Protocol selection:
 This subclass is indented under subclass 8.  Subject matter further comprising means or steps for choosing a data communications protocol to be employed in order to transfer data between the peripheral and digital data processing system or computer.
  
[List of Patents for class 710 subclass 12]    12As input or output:
 This subclass is indented under subclass 8.  Subject matter further comprising means or steps for assigning a port or adapter, which is associated with the peripheral, to permit either transferring data from the peripheral to the digital data processing system or computer or from the digital data processing system or computer to the peripheral.
  
[List of Patents for class 710 subclass 13]    13By detachable memory:
 This subclass is indented under subclass 8.  Subject matter further comprising means or steps for assigning the operating characteristics based on data stored in a removable memory.
  
[List of Patents for class 710 subclass 14]    14Mode selection:
 This subclass is indented under subclass 8.  Subject matter further comprising means or steps for choosing a method of operating for the peripheral.
  
[List of Patents for class 710 subclass 15]    15Peripheral monitoring:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for enabling a digital data processing system or computer to detect or observe an operating characteristic or condition of the peripheral.

SEE OR SEARCH CLASS:

379, Telephonic Communications,   subclasses 32.01 through 33and subclasses 112.01-112.1 for service monitoring and usage monitoring in telephonic communications.
713, Electrical Computers and Digital Processing Systems: Support,   subclasses 1 , 2, 100 for digital data processing system initialization and configuration at boot-time.
714, Error Detection/Correction and Fault Detection/Recovery,   subclasses 1+ for furthering the reliability or availability of peripherals, especially subclass 5 for memory or I/O subsystem affected faults, subclass 43 for bus or I/O channel device fault, subclass 47 for performance monitoring, subclasses 712+ for transmission facility testing, and subclasses 718+ for memory testing.
  
[List of Patents for class 710 subclass 16]    16Characteristic discrimination:
 This subclass is indented under subclass 15.  Subject matter further comprising means or steps for detecting the connection, type, or configuration of the peripheral.
  
[List of Patents for class 710 subclass 17]    17Availability monitoring:
 This subclass is indented under subclass 15.  Subject matter further comprising means or steps for detecting whether the peripheral is available to participate in transferring data with the digital data processing system or computer.
  
[List of Patents for class 710 subclass 18]    18Activity monitoring:
 This subclass is indented under subclass 15.  Subject matter further comprising means or steps for detecting the amount or type of usage of the peripheral over a period of time.
  
[List of Patents for class 710 subclass 19]    19Status updating:
 This subclass is indented under subclass 15.  Subject matter further comprising means or steps for detecting or reporting change in the condition of a peripheral.
  
[List of Patents for class 710 subclass 20]    20Concurrent Input/Output processing and data transfer:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for performing an additional I/O-related function while also exchanging data between a peripheral and computer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

7,for exchanging data between the peripherals and computers while performing tasks unrelated to Input/Output data processing.
  
[List of Patents for class 710 subclass 21]    21Concurrent data transferring:
 This subclass is indented under subclass 20.  Subject matter further comprising means or steps for transferring plural groups of data between a peripheral and digital data processing system or computer at the same time.
  
[List of Patents for class 710 subclass 22]    22Direct Memory Accessing (DMA):
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for transferring data between a peripheral and memory of a digital data processing system or computer with minimal or no intervention from a main processor of the digital data processing system or computer.
(1) Note. Direct Memory Accessing (DMA) appears here for its classical treatment as an I/O operation as opposed to a memory accessing and control operation per se. Memory accessing and control are classified elsewhere. See the SEE OR SEARCH CLASS notes below.
(2) Note. Transferring data "directly" between memories of different digital data processing system or computers is classified elsewhere. See the SEE OR SEARCH CLASS notes below.

SEE OR SEARCH CLASS:

360, Dynamic Magnetic Information Storage or Retrieval,   appropriate subclasses for record carriers and systems wherein information is stored and retrieved by interaction with a medium and there is relative motion between a medium and a transducer, for example, magnetic disk drive devices and control thereof, per se.
709, Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring,   subclass 212 for computer-to-computer direct memory accessing.
711, Electrical Computers and Digital Processing Systems: Memory,   subclasses 100+ for memory accessing and controlling, per se.
  
[List of Patents for class 710 subclass 23]    23Programmed control memory accessing:
 This subclass is indented under subclass 22.  Subject matter further comprising means or steps for transferring data directly between a peripheral and memory and also for transferring data between a peripheral and the memory under control of the central or main processor(s), although not necessarily at the same time.
  
[List of Patents for class 710 subclass 24]    24By command chaining:
 This subclass is indented under subclass 22.  Subject matter further comprising means or steps for linking individual instruction data and then executing the linked instruction data to transfer data directly between a peripheral and memory.
  
[List of Patents for class 710 subclass 25]    25Timing:
 This subclass is indented under subclass 22.  Subject matter further comprising means or steps for determining when to transfer data directly between a peripheral and memory.

SEE OR SEARCH CLASS:

370, Multiplex Communications,   various subclasses for TDM, FDM, etc., per se.
713, Electrical Computers and Digital Processing Systems: Support,   subclass 375 for synchronization maintenance of plural processors; subclasses 400-401 for clock synchronization, per se, subclasses 500-503 for digital data processing system clock, pulse and timing interval generation, per se.
718, Electrical Computers and Digital Processing Systems: Virtual Machine Task or Process Management or Task Management/Control,   appropriate subclassesfor task and process management.
  
[List of Patents for class 710 subclass 26]    26Using addressing:
 This subclass is indented under subclass 22.  Subject matter further comprising details of generating or employing address data to transfer data directly between a peripheral and the memory of the digital data processing system or computer.

SEE OR SEARCH CLASS:

711, Electrical Computers and Digital Processing Systems: Memory,   subclasses 1+ for addressing combined with specific memory configurations (e.g., extended, expanded, dynamic, etc.) and subclasses 200+ for generalized address forming.
  
[List of Patents for class 710 subclass 27]    27Via separate bus:
 This subclass is indented under subclass 22.  Subject matter wherein plural buses permit a processor to access memories concurrently with direct memory accesses.
  
[List of Patents for class 710 subclass 28]    28With access regulating:
 This subclass is indented under subclass 22.  Subject matter further comprising means or steps for directing which of the peripherals may transfer data directly with the memories.

SEE OR SEARCH THIS CLASS, SUBCLASS:

107+,for bus access regulating in a digital data processing system.
200-244,for general purpose access regulating in a digital data processing system.
260+,for interrupt processing, per se.

SEE OR SEARCH CLASS:

718, Electrical Computers and Digital Processing Systems: Virtual Machine Task or Process Management or Task Management/Control,   appropriate subclassesfor task and process management.
726, Information Security,   subclasses 1 through 36for information security in computers or digital processing system.
  
[List of Patents for class 710 subclass 29]    29Flow controlling:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for controlling a first rate at which a peripheral or the digital data processing system and computer transmit data such that the first rate does not exceed a second rate at which the computer or digital data processing system and peripheral can receive data.

SEE OR SEARCH CLASS:

709, Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring,   subclass 233 for transfer speed regulating in computer-to-computer data transferring.
  
[List of Patents for class 710 subclass 30]    30Frame forming:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for arranging data into a specified format in order to transfer the arranged data between a peripheral and a digital data processing system or a computer.

SEE OR SEARCH CLASS:

370, Multiplex Communications,   for the simultaneous transmission of two or more signals over a common medium, particularly subclasses 470+ for adaptive arranging data into variable frame lengths in order to transfer data between systems requiring different frame formats.
709, Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring,   subclass 236 for computer-to-computer data framing.
  
[List of Patents for class 710 subclass 31]    31Transfer direction selection:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for specifying whether data are to be transmitted from the peripheral to the digital data processing system or computer or from the digital data processing system or computer to the peripheral.
  
[List of Patents for class 710 subclass 32]    32Transfer termination:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for ceasing to exchange data between the peripheral and digital data processing system or computer.
  
[List of Patents for class 710 subclass 33]    33Data transfer specifying:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for defining a characteristic of a desired transfer of data between the peripheral and digital data processing system or computer (e.g., amount of the data to be transferred, location of the data to be transferred).
(1) Note. The combination of specifying data transfer properties and configuring a peripheral is classified elsewhere. This subclass is for data transfer specifying, per se.
  
[List of Patents for class 710 subclass 34]    34Transferred data counting:
 This subclass is indented under subclass 33.  Subject matter wherein the amount of the data to be transferred is defined and the amount of data subsequently transferred is computed.
(1) Note. As a reminder, the glossary for this class defines a computer as a special instance of a digital data processing system.

SEE OR SEARCH THIS CLASS, SUBCLASS:

15+,for digital data processing system or computers detecting or observing operating characteristics or conditions of peripherals.
  
[List of Patents for class 710 subclass 35]    35Burst data transfer:
 This subclass is indented under subclass 33.  Subject matter wherein the characteristic is specified as to enable a plurality of data to be transferred in a single transmission.
  
[List of Patents for class 710 subclass 36]    36Input/Output access regulation:
 This subclass is indented under subclass 1.  Subject matter further comprising means or steps for controlling which of the peripherals may transfer data with which of the digital data processing systems or computers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

107+,for access regulation and arbitration within a digital data processing system,
200-244,for generalized locking, polling, access arbitration and interrupt data processing.

SEE OR SEARCH CLASS:

709, Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring,   appropriate subclassesfor transferring data among multiple computer systems.
711, Electrical Computers and Digital Processing Systems: Memory,   subclasses 200+ for generalized address formation.
  
[List of Patents for class 710 subclass 37]    37Access dedication:
 This subclass is indented under subclass 36.  Subject matter further comprising means or steps for permitting certain of the peripherals to exchange data with only certain of the digital data processing system or computers.
  
[List of Patents for class 710 subclass 38]    38Path selection:
 This subclass is indented under subclass 36.  Subject matter further comprising means or steps for choosing a route via which the peripheral and digital data processing system or computer will transfer data.

SEE OR SEARCH CLASS:

340, Communications: Electrical,   subclasses 825+ for channel and path selecting in electrical communications, per se.
  
[List of Patents for class 710 subclass 39]    39Access request queuing:
 This subclass is indented under subclass 36.  Subject matter further comprising means or steps for storing a request to transfer data from the peripheral, or digital data processing systems or computer so that the request may be serviced later.
  
[List of Patents for class 710 subclass 40]    40Access prioritization:
 This subclass is indented under subclass 36.  Subject matter further comprising means or steps for preferring certain of the peripherals, or digital data processing systems or computers over others in servicing requests therefrom to transfer data.
  
[List of Patents for class 710 subclass 41]    41Dynamic:
&nb