*****TBD*****

CLASS 713, ELECTRICAL COMPUTERS AND DIGITAL PROCESSING SYSTEMS: SUPPORT

1	DIGITAL DATA PROCESSING SYSTEM INITIALIZATION OR CONFIGURATION (E.G., INITIALIZING, SETUP, CONFIGURATION, OR RESETTING):

This subclass is indented under the class definition. Subject matter comprising means or steps for establishing an original operating parameter or data for a computer or digital data processing system.

(1) Note. The means or steps for establishing the original operating parameter or data may be related to, for example, extended or expanded memory, device driver, path, file, buffer, disk management, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2,	for loading initialization program (e.g., booting, rebooting, warm booting, remote booting, BIOS, initial program load (IPL) or bootstrapping).
100,	for reconfiguring of system settings, per se.

SEE OR SEARCH CLASS:

340,	Communications: Electrical, subclasses 1.1 through 16.1for selective communication systems.
370,	Multiplex Communications, subclasses 254+ for network configuration determination.
707,	Data Processing: Database, Data Mining, and File Management or Data Structures, subclasses 781 through 789for access control to a database or file in a computer environment, and subclasses 790 through 812 for database design including data structures and data 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.
709,	Electrical Computers and Digital Processing Systems: Multicomputer or Process Coordinating, subclasses 220+ for network computer configuring,particularly subclass 222 for initializing.
710,	Electrical Computers and Digital Data Processing Systems, Input/Output, subclasses 8+ for peripheral configuration, subclasses 104+ for configuring under system intra connecting.
711,	Electrical Computers and Digital Processing Systems: Memory, subclasses 170+ for memory configuring.
712,	Electrical Computers and Digital Processing Systems: Processing Architectures and Instruction Processing (e.g., Processors), subclasses 1+ for processor architectures.
714,	Error Detection/Correction and Fault Detection /Recovery, subclasses 3+ for masking or reconfiguring in the event of a fault under fault recovery, reliability and availability, subclass 36 for testing at power up.
715,	Data Processing: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing, subclass 866 for configuring an operator interface; cross-reference art collection 966 for computer process control or configuration in an operator interface.

2	. Loading initialization program (e.g., booting, rebooting, warm booting, remote booting, BIOS, initial program load (IPL), bootstrapping):

This subclass is indented under subclass 1. Subject matter comprising means or steps for booting a computer or digital data processing system.

(1) Note. This subclass includes initial program load (IPL), bootstrap, re-booting/resetting, loading an updated BIOS, and warm/cold booting. These events typically occur automatically in the computer system at power on reset or after a warm boot or warm restart and include reading memory locations. Memory accessing and control, per se, and address formation, per se, however, are classified elsewhere.

(2) Note. For the purpose of this definition it should be understood that transferring an operating system into memory may involve the use of a secondary loader program.

SEE OR SEARCH CLASS:

711,	Electrical Computers and Digital Processing Systems, subclasses 100+ for storage accessing and control, subclasses 170+ for memory space allocationor memo configuring, and subclasses 200+ for address formation.
714,	Error Detection/Correction and Fault Detection/Recovery, subclass 36 for power-on self test (POST).

100	RECONFIGURATION (E.G., CHANGING SYSTEM SETTING):

This subclass is indented under the class definition. Subject matter comprising means or steps for changing a system setting or an operational mode after it has been set.

(1) Note. The subject matter of this subclass is directed to alteration of system settings, parameters, or operational modes that have been previously set or initialized. Initialization of a system is classified elsewhere.

(2) Note. For the purpose of this definition system settings" includes any system data orientation or device configuration required for a particular mode of operation of a digital data processing system.

(3) Note. The subject matter of this subclass is directed to alteration of system settings, parameters, or operational modes that have been previously set or initialized. Context switching of a processor, computer, or digital data processing system between executing processes, tasks, or threads is classified elsewhere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1,	for configuring of system settings, per se.
2,	for initialization of a computer or a digital data processing system.

SEE OR SEARCH CLASS:

707,	Data Processing: Database, Data Mining, and File Management or Data Structures, subclasses 781 through 789for access control to a database or file in a computer environment, subclasses 790 through 812 for database design including data structures and data 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.
709,	Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring or Plural Processor Synchronization, subclass 221 for network computer reconfiguring.
710,	Electrical Computers and Digital Data Processing Systems: Input/Output, subclasses 8+ for peripheral configuration, subclass 104 for configuration under system intra connecting.
711,	Electrical Computers and Digital Processing Systems: Memory, subclasses 170+ for memory space allocation or memory configuring.
712,	Electrical Computers and Digital Processing Systems: Processing Architectures and Instruction Processing (e.g., Processors), subclasses 1+ for processor architectures, subclass 229 for mode switching under processing control at the ALU level.
714,	Error Detection/Correction and Fault Detection /Recovery, subclasses 3+ for masking or reconfiguration in the event of a fault under fault recovery, reliability and availability, and subclass 36 for testing at power up.
715,	Data Processing: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing, subclass 866 for operator interface configuring.
718,	Electrical Computers and Digital Processing Systems: Virtual Machine Task or Process Management or Task Management/Control, subclasses 107 through 108for multitasking and context switching under task management and control.

150	MULTIPLE COMPUTER COMMUNICATION USING CRYPTOGRAPHY:

Subject matter for cryptographically protecting the transfer of data among a plurality of spatially distributed (i.e., situated at different locations) computers or digital data processing systems via one or more communications media (e.g., computer networks) wherein the computers or digital data processing systems employ the data in data processing before or after the transferring, and wherein the transferring affects the data transfer between the computers.

(1) Note. Excluded herein is subject matter related to computer or data processing security having only nominal recitation of cryptographic processing such as encrypting, scrambling, etc. Such nominal recitation of cryptography combined with computer or data processing security is classified elsewhere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

201,	for computer network security in general or in combination with nominal cryptography.

SEE OR SEARCH CLASS:

380,

Cryptography, art collections FOR 149 and FOR 150 for cryptographic igital signal handling which may include cryptographic computer communication.

709,

Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring or Plural Processor Synchronization, appropriate subclassesfor multiple computer data transferring absent cryptography, particularly subclasses 225 for controlled network access without cryptographic technique, 226 for network resource allocating without cryptographic technique, and subclass 229 for trusted authority authentication for access to network resources without cryptographic technique.

151	. Protection of a particular protocol layer:

	This subclass is indented under 150. Subject matter wherein the protection of the data transfer occurs at a specified stack model level.

152	.. Application layer security:

This subclass is indented under 151. Subject matter wherein protection occurs at the highest stack model level.

(1) Note. This includes security for data transfer applications such as e-mail or FTP.

153	. Particular node (e.g., gateway, bridge, router, etc.) for directing data and applying cryptography:

This subclass is indented under 150. Subject matter wherein cryptographic protection of data is effected by a distinct element directing the data transfer among the spatially distributed computers.

SEE OR SEARCH CLASS:

370,	Multiplex Communications, subclasses 351 through 430for multiplex communication routing absent cryptography.
705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclass 79 for cryptographic remote charge determination of a secure transaction including payment switch or gateway.
709,	Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring or Plural Processor Synchronization, subclasses 238 through 244computer to computer data routing.

154	.. Including filtering based on content or address:

	This subclass is indented under 153. Subject matter wherein the distinct element screens the data for particular subject matter or network location designation.

155	. Central trusted authority provides computer authentication:

This subclass is indented under 150. Subject matter wherein a single source confirms the legitimacy of a computer on the network or provides logon authorization.

SEE OR SEARCH CLASS:

380,	Cryptography, subclass 229 for video signal modification which is record or coin controlled and includes authentication, subclass 232 for video signal modification which has usage or charge determination including authentication, subclasses 247 - 250 for cellular phone cryptographic authentication, and subclass 258 for a communication system which is position dependent or has authentication.
705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclass 67 for secure transaction cryptographic processing (e.g., EFT/POS) including authentication.
709,	Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring or Plural Processor Synchronization, appropriate subclassesfor multiple computer data transferring absent cryptography, particularly subclasses 225 for controlled network access without cryptographic technique, 226 for network resource allocating without cryptographic technique, and subclass 229 for trusted authority authentication for access to network resources without cryptographic technique.

156	.. By certificate:

This subclass is indented under 155. Subject matter wherein the single source provides digital information attesting to a network computers legitimacy.

SEE OR SEARCH THIS CLASS, SUBCLASS:

175,	for generation of a certificate.

157	... Chain or hierarchical certificates:

	This subclass is indented under 156. Subject matter wherein a certificate references another certificate.

158	... Revocation or expiration:

	This subclass is indented under 156. Subject matter wherein a single source provides information invalidating a previously issued certificate.

159	.. Including intelligent token:

This subclass is indented under 155. Subject matter wherein the authentication includes a portable carrier with data processing capability.

SEE OR SEARCH THIS CLASS, SUBCLASS:

172,	173, and 174 for generic authentication using intelligent token in multiple computer communication.

SEE OR SEARCH CLASS:

380,	Cryptography, subclass 229 for authentication in a video system using a record or token.
705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclasses 65 through 69for secure transaction including intelligent token.

160	. Packet header designating cryptographically protected data:

This subclass is indented under 150. Subject matter wherein the data transfer uses an integral unit including information indicating that the associated data is encrypted or signed.

SEE OR SEARCH CLASS:

370,	Multiplex Communications, subclasses 351 through 430for pathfinding or routing in multiplexing systems.
709,	Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring or Plural Processor Synchronization, subclass 236 for computer to computer data framing.

161	.. Data authentication:

This subclass is indented under 160. Subject matter wherein the integral unit includes information to attest to the integrity of the data transferred.

SEE OR SEARCH THIS CLASS, SUBCLASS:

155+,

for multiple computer communication using cryptography having central trusted authority providing computer authentication, and subclasses 168- 181 for multiple computer communication using cryptography having particular communication authentication technique.

SEE OR SEARCH CLASS:

380,	Cryptography, subclass 229 for video signal modification which is record or coin controlled and includes authentication, subclass 232 for video signal modification which has usage or charge determination including authentication, subclasses 247-250 for cellular phone cryptographic authentication, and subclass 258 for a communication system which is position dependent or has authentication.
705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclass 67 for secure transaction cryptographic processing (e.g., EFT/POS) including authentication.
714,	Error Detection/Correction and Fault Detection/Recovery, subclasses 746 -797 for digital data error correction and subclasses 799-824 for digital data error detection

162	. Having particular address related cryptography:

This subclass is indented under 150. Subject matter including a specific network location designation associated with cryptographic protection.

SEE OR SEARCH CLASS:

709,	Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring or Plural Processor Synchronization, subclass 245 for computer to computer data addressing.

163	.. Multicast:

	This subclass is indented under 162. Subject matter wherein a group of users is selectively addressed.

164	. Security kernel or utility:

This subclass is indented under 150. Subject matter wherein cryptographic protection of a computer network is provided by a portion of an operating system or a program dedicated to a specific system function.

SEE OR SEARCH CLASS:

718,	Electrical Computers and Digital Processing Systems: Virtual Machine Task or Process Management or Task Management/Control, appropriate subclassesfor computer task management and control.

165	.. File protection:

	This subclass is indented under 164. Subject matter wherein the kernel or utility implements a file security system.

166	.. Security levels:

	This subclass is indented under 164. Subject matter wherein the kernel or utility controls access to distinct tiers of system protection.

167	.. Object protection:

	This subclass is indented under 164. Subject matter wherein the kernel or utility provides protection of or access to an integrated structure of data and routines is provided.

168	. Particular communication authentication technique:

This subclass is indented under 150. Subject matter wherein the data processing before or after the transferring provides indication of a genuine transmission or reception of information or related entity.

SEE OR SEARCH THIS CLASS, SUBCLASS:

155,	and 156-159 for multiple computer communication using cryptography having central trusted authority providing computer authentication, and subclass 161 for multiple computer communication using cryptography where packet header denotes cryptographically protected data and having data authentication

SEE OR SEARCH CLASS:

380,	Cryptography, subclass 229 for video signal modification which is record or coin controlled and includes authentication, subclass 232 for video signal modification which has usage or charge determination including authentication, subclasses 247-250 for cellular phone cryptographic authentication, and subclass 258 for a communication system which is position dependent or has authentication.
705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclass 67 for secure transaction cryptographic processing (e.g., EFT/POS) including authentication.

169	.. Mutual entity authentication:

	This subclass is indented under 168. Subject matter wherein both a transmission and reception entity are determined to be genuine by each other.

170	.. Authentication of an entity and a message:

	This subclass is indented under 168. Subject matter wherein a transmission or reception entity and a corresponding message are determined to be genuine.

171	.. Having key exchange:

This subclass is indented under 168. Subject matter wherein the transmission and reception entities exchange information during authentication which establishes an operational key.

SEE OR SEARCH CLASS:

380,	Cryptography, subclasses 47 -227 for generic key management.

172	.. Intelligent token:

This subclass is indented under 168. Subject matter wherein a transmission or reception entity is a portable carrier with data processing capability.

SEE OR SEARCH CLASS:

380,	Cryptography, subclasses 227 -230 for video electric signal modification using an intelligent token at the receiver.
705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclasses 65 through 69for secure transaction using intelligent token.

173	... Pre-loaded with certificate:

This subclass is indented under 172. Subject matter wherein the portable carrier stores information attesting to the authenticity of a variable or parameter involved in the authentication.

SEE OR SEARCH CLASS:

705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclass 66 for secure transaction intelligent token initializing.

174	... Including particular multiplication or exponentiation circuit:

This subclass is indented under 172. Subject matter including a circuit performing the arithmetic operation of multiplying two numbers together or raising a number to a particular power.

SEE OR SEARCH CLASS:

708,	Electrical Computers: Arithmetic Processing and Calculating, subclass 606 for digital calculation of exponents and 620 for generic digital calculation of multiplication.

175	.. By generation of certificate:

This subclass is indented under 168. Subject matter wherein digital information attesting to the legitimacy of a transmission or reception is produced.

SEE OR SEARCH THIS CLASS, SUBCLASS:

156,	157, and 158 for computer network certificates.

176	.. Authentication by digital signature representation or digital watermark:

This subclass is indented under 168. Subject matter wherein a data object is cryptographically processed to produce a unique identifier which subsequently verifies the data object.

SEE OR SEARCH CLASS:

283,	Printed Matter, subclass 13 for printed matter with watermark for concealing information.
382,	Image Analysis, subclasses 276 through 308for image transformation.
705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclass 75 for cryptographic secure transaction having transaction verification.

177	... Signature tree:

	This subclass is indented under 176. Subject matter wherein the cryptographic processing produces a combined time sequenced verifiable record of plural related data objects.

178	... Time stamp:

	This subclass is indented under 176. Subject matter wherein a time identifier is included in the verifiable record.

179	... Includes generation of associated coded record:

This subclass is indented under 176. Subject matter wherein a machine readable indicia is produced which is representative of the data object.

SEE OR SEARCH CLASS:

380,	Cryptography, subclass 246 for cryptographic facsimile having coded record generation.

180	.. Generating specific digital signature type (e.g., blind, shared, or undeniable):

This subclass is indented under 168. Subject matter including a particular type of processing for the production of the indication of a genuine transmission or reception of information or related entity.

(1) Note. This includes undeniable, blinded or shared signatures.

SEE OR SEARCH THIS CLASS, SUBCLASS:

172,	173, and 174 for cryptographic multiple computer communication authentication by intelligent token.

SEE OR SEARCH CLASS:

705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclass 69 for cryptographic secure transaction having electronic cash detail.

181	.. Message digest travels with message:

This subclass is indented under 168. Subject matter wherein a value for verifying the integrity of the information transmitted is conveyed with the information.

SEE OR SEARCH CLASS:

714,	Electrical Computers and Digital Processing Systems: Error Detection/Correction and Fault Detection/Recovery, subclasses 746 through 797for digital data error correction and subclasses 799-824 for digital data error detection.

182	SYSTEM ACCESS CONTROL BASED ON USER IDENTIFICATION BY CRYPTOGRAPHY:

Subject matter wherein authorization to a digital processing system is dependent upon cryptographically processed data for personal verification.

(1) Note. Excluded herein is subject matter related to computer or data processing security having only nominal recitation of cryptographic processing such as encrypting, scrambling, etc. Such nominal recitation of cryptography combined with computer or data processing security is classified elsewhere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

155+,

for computer authentication in cryptographic multiple computer communication.

SEE OR SEARCH CLASS:

379,	Telephonic Communications, subclasses 93.02+ for access restriction to a computer system over a telephone line absent encryption.
708,	Electrical Computers: Arithmetic Processing and Calculating, subclass 135 for particular security input to digital calculating computer absent encryption.
726,	Information Security, subclasses 1 through 36for information security in computers or digital processing system.

183	. Solely password entry (no record or token):

This subclass is indented under 182. Subject matter wherein the identification is dependent upon the submission exclusively of a password by the user.

SEE OR SEARCH CLASS:

705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclass 72 for PIN verification in a secure transaction.
726,	Information Security, subclasses 1 through 36for information security in computers or digital processing system.

184	. PIN/password generator device:

This subclass is indented under 182. Subject matter including a device which produces the personal identification number or the user password.

SEE OR SEARCH CLASS:

726,	Information Security, subclasses 1 through 36for information security in computers or digital processing system.

185	. Using record or token:

This subclass is indented under 182. Subject matter wherein verification is determined in conjunction with a portable data carrier.

SEE OR SEARCH CLASS:

235,	Registers, subclasses 380 through 382.5for identification system controlled by a data bearing record.
705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclasses 65 through 69for secure transaction including intelligent token

186	.. Biometric acquisition:

This subclass is indented under 185. Subject matter wherein the identification is provided by a measurement or sensing of some unique user physical characteristic.

SEE OR SEARCH CLASS:

382,	Image Analysis, subclass 115 for image analysis for personal identification (biometrics).
902,	Electronic Funds Transfer, subclass 3 for a cross reference art collection for biometric evaluation in electronic funds transfer.

187	COMPUTER PROGRAM MODIFICATION DETECTION BY CRYPTOGRAPHY:

Subject matter wherein a cryptographic technique is used to determine that a change has occurred to a particular computer program.

(1) Note. Excluded herein is subject matter related to computer or data processing security having only nominal recitation of cryptographic processing such as encrypting, scrambling, etc. Such nominal recitation of cryptography combined with computer or data processing security is classified elsewhere.

SEE OR SEARCH CLASS:

714,	Error Detection/Correction and Fault Detection/Recovery, subclasses 38.1 through 38.14for error analysis of computer software.
726,	Information Security, subclasses 1 through 36for information security in computers or digital processing system.

188	COMPUTER VIRUS DETECTION BY CRYPTOGRAPHY:

Subject matter which cryptographically determines the presence of a computer program designed to cause a system malfunction.

(1) Note. Excluded herein is subject matter related to computer or data processing security having only nominal recitation of cryptographic processing such as encrypting, scrambling, etc. Such nominal recitation of cryptography combined with computer or data processing security is classified elsewhere.

SEE OR SEARCH CLASS:

714,	Error Detection/Correction and Fault Detection/Recovery, subclasses 38.1 through 38.14for error analysis of computer software.
726,	Information Security, subclasses 1 through 36for information security in computers or digital processing system.

189	DATA PROCESSING PROTECTION USING CRYPTOGRAPHY:

Subject matter wherein cryptography is used in the protection of the operation of a computer.

(1) Note. Excluded herein is subject matter related to computer or data processing security having only nominal recitation of cryptographic processing such as encrypting, scrambling, etc. Such nominal recitation of cryptography combined with computer or data processing security is classified elsewhere.

SEE OR SEARCH CLASS:

726,	Information Security, subclasses 1 through 36for information security in computers or digital processing system.

190	. Computer instruction/address encryption:

This subclass is indented under 189. Subject matter wherein a step of program execution or a designated memory location is encrypted.

SEE OR SEARCH CLASS:

711,	Electrical Computers and Digital Processing Systems: Memory, subclasses 163 through 164for generic access control to digital processing system storage.

191	. Upgrade/install encryption:

This subclass is indented under 189. Subject matter wherein an encryption routine is enhanced or introduced.

SEE OR SEARCH CLASS:

717,	Data Processing: Software Development, Installation, and Management, subclasses 168 through 173for software upgrading or updating (including plural version management) and subclasses 174-178 for software installation.

192	. Having separate add-on board:

This subclass is indented under 189. Subject matter including a distinct expansion circuit board which provides cryptographic protection.

SEE OR SEARCH CLASS:

710,	Electrical Computers and Digital Data Processing Systems: Input/Output, subclasses 101 through 103for bus expansion which may include card insertion.

193	. By stored data protection:

This subclass is indented under 189. Subject matter wherein unauthorized access to information held in static memory elements is prevented.

SEE OR SEARCH THIS CLASS, SUBCLASS:

22,	for electrical signal modification involving dynamic tape storage.

SEE OR SEARCH CLASS:

327,	Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, subclasses 545 and 546 for signal protection by miscellaneous nonlinear devices, circuits, or systems.
365,	Static Information Storage and Retrieval, appropriate subclasses for static memory information storage and retrieval.
711,	Electrical Computers and Digital Processing Systems: Memory, appropriate subclasses for memory of a digital processing system and particularly subclasses 163 and 164 for access control to digital processing system storage absent encryption.

194	. Tamper resistant:

This subclass is indented under 189. Subject matter wherein a physical barrier has been provided to protect a component providing cryptographic processing in a digital processing system.

SEE OR SEARCH CLASS:

257,	Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), subclass 922 for a cross reference art collection of tamper resistant smart cards.

300	COMPUTER POWER CONTROL

This subclass is indented under the class definition. Subject matter including details of steps or means for modifying an amount of power used by a digital data processing system or a system response to available power.

(1) This subclass includes power reduction, powering-up systems, powering-down systems, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

321,	for power saving features in an electric digital calculating computer.

SEE OR SEARCH CLASS:

60,	Power Plants, appropriate subclasses for power plant apparatus, per se.
307,	Electrical Transmission or Interconnecting Systems, subclasses 11+ for plural load circuit systems, subclasses 43+ for plural supply circuits or sources.
310,	Electrical Generator or Motor Structure, appropriate subclasses.
322,	Electricity, Single Generator Systems, subclasses 17+ for automatic control of generator or control means, subclasses 40+ for power transmitting mechanism control.
323,	Electricity: Power Supply or Regulation Systems, appropriate subclasses for power supply regulation in general.
324,	Electricity: Measuring and Testing, subclasses 74+ for testing or calibrating of watt- hour meters, subclasses 76.11+ for measuring, testing or sensing electricity, per se.
365,	Static Information Storage and Retrieval, subclasses 226+ for powering in a static memory device.
700,	Data Processing: Generic Control Systems or Specific Applications, subclasses 286 through 298for data processing application in electrical power generation or distribution.
702,	Data Processing: Measuring, Calibrating or Testing, subclasses 60+ for power parameter measuring.
714,	Error Detection/Correction and Fault Detection /Recovery, appropriate subclasses for power supply related reliability and availability fault recovery and fault locating.

310	. By external command:

This subclass is indented under subclass 300. Subject matter wherein modification of power in a digital data processing system is initiated by a signal from outside of the system.

SEE OR SEARCH CLASS:

323,	Electricity: Power Supply or Regulating Systems, subclasses 318+ for power controlled in response to an operator input or an externally generated signal.

320	. Power conservation:

This subclass is indented under subclass 300. Subject matter wherein means or steps are provided to reduce an amount of power consumed by the digital data processing system.

SEE OR SEARCH CLASS:

327,	Miscellaneous Active Electrical Nonlinear Devices, Circuits, And Systems, subclass 544 for power conservation in a specific source of supply or bias voltage.
365,	Static Information Storage and Retrieval, subclass 227 for conservation of power in a static memory device.
455,	Telecommunication, subclass 574 for power supply conservation in a radio telephone equipment.

321	.. Programmable calculator with power saving feature:

This subclass is indented under subclass 320. Subject matter wherein means or steps are provided to reduce an amount of power consumed by a programmable calculator.

SEE OR SEARCH THIS CLASS, SUBCLASS:

320,	for power conservation in a digital data processing system.

SEE OR SEARCH CLASS:

708,	Electrical Computers: Arithmetic Processing and Calculating, subclass 130 for programmable calculator per se.

322	.. By clock speed control (e.g., clock on/off):

Subject matter under subclass320 wherein power conservation is achieved by regulating system oscillator frequency.

SEE OR SEARCH THIS CLASS, SUBCLASS:

601,	for control of generic systems and devices by inhibiting or stopping a clock.

SEE OR SEARCH CLASS:

327,	Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, subclasses 113+ for miscellaneous frequency control.
331,	Oscillators, appropriate subclasses for oscillators, per se.
332,	Modulators, subclasses 117+ for a frequency modulator.

323	.. Active/idle mode processing:

This subclass is indented under subclass 320. Subject matter wherein power conservation is achieved by selectively removing or reducing power to all elements of the digital data processing system according to a predefined pattern (i.e., mode) which results in a temporary interruption of data processing.

(1) Note. There may be more than two modes in a given system.

(2) Note. Included here are sleep/resume, suspend/resume or standby systems.

(3) Note. Power is subsequently applied or increased to recommence normal processing.

324	.. By shutdown of only part of system:

	This subclass is indented under subclass 320. Subject matter wherein power conservation is achieved by selectively turning power off to only a portion of the digital data processing system.

330	. Power sequencing:

This subclass is indented under subclass 320. Subject matter involving an application or a removal of power to the data processing system by a pre-determined series of stages.

(1) Note. Also included here is subject matter involving power sequence inhibit.

340	. Having power source monitoring:

This subclass is indented under subclass 300. Subject matter including sensing of some digital data processing system power parameter.

SEE OR SEARCH CLASS:

324,	Electricity: Measuring and Testing, subclasses 76.11+ for measuring or testing of electricity, per se.
700,	Data Processing: Generic Control Systems or Specific Applications, subclasses 286 through 298for data processing application in electrical power generation or distribution.
702,	Data Processing: Measuring, Calibrating or Testing, subclasses 60+ for power parameter measuring.

375	SYNCHRONIZATION OF PLURAL PROCESSORS:

This subclass is indented under the class definition. Subject matter comprising means or steps for synchronizing the control or regulation of clocking or timing operations of two or more processors.

(1) Note. Classification herein is proper if a single clock or timing circuit controls the processors, plural clocks or timing circuits are synchronized to control the processors, or operations are synchronized to occur on the same clocking or timing cycle.

(2) Note. Passing of data (e.g., tokens, semaphores) for multicomputer synchronizing is classified elsewhere in this class. See the SEE OR SEARCH CLASS notes below.

SEE OR SEARCH CLASS:

709,	Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring or Plural Processor Synchronization, subclass 248 for multicomputer synchronization.

400	SYNCHRONIZATION OF CLOCK OR TIMING SIGNALS, DATA, OR PULSES

This subclass is indented under the class definition. Subject matter wherein clock or timing signals, timing pulses, or data associated with a control or regulation of processing component, memory component, or I/O component are caused to operate in synchronization.

SEE OR SEARCH THIS CLASS, SUBCLASS:

500,	for clock, pulse or timing signal generation or analysis in a digital data processing system.

SEE OR SEARCH CLASS:

326,	Electronic Digital Logic Circuitry, subclasses 93+ for clocking or synchronizing of logic states or gates.
327,	Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, appropriate subclasses, particularly subclasses 141+ for synchronizing in a signal converting, shaping or generating system.
348,	Television, appropriate subclasses, particularly subclasses 500+ for techniques or maintain proper time or phase correspondence between scanning components of the television system.
358,	Facsimile and Static Presentation Processing, subclasses 409 through 424for methods or apparatus to maintain a proper time or phase correspondence between a transmitter and a receiver of a facsimile system.
368,	Horology: Time Measuring Systems or Devices, subclasses 47 and 52+ for synchronization in plural timepiece system or system device.
370,	Multiplex Communications, subclass 324 for multiple access time division synchronization in an airborne or space satellite repeater, subclass 350 for synchronization in a combining or distributing information via time channels of a communication over free space system and subclasses 503+ for synchronization in a combining or distributing information via time channels of a communication over wire system.
375,	Pulse or Digital Communications, subclasses 354+ for synchronizing the operation of pulse or digital receiving or transmitting mechanisms.
705,	Data Processing: Financial, Business Practice, Management, or Cost/Price Determination, subclasses 7.11 through 7.42for operations research per se including systems directed to generalized linear programming problem solving and cost function analysis, resource allocating in business transaction processing and scheduling of interrelated processes.
709,	Electrical Computers and Digital Processing Systems: Multicomputer Data Transferring or Plural Processor Synchronization, subclass 248 for multi-computer synchronization in a network.
710,	Electrical Computers and Digital Data Processing Systems: Input/Output, subclass 61 for synchronous data transfer in I/O process timing.
712,	Electrical Computers and Digital Processing Systems: Processing Architectures and Instruction Processing (e.g., Processors), subclasses 220+ for processing control, per se; and particularly subclasses 245+ for processing sequence control.
714,	Error Detection/Correction Fault Detection /Recovery, subclass 12 for synchronization maintenance of concurrent redundantly operating processors in a fault recovery by masking or reconfiguring; subclasess15+ for state recovery (i.e., process or data file) in computers or digital data processing systems, subclass 707 for a data error detection/correction system in which a determination of an error rate is used to control synchronization between devices, subclass 731 for a scan path digital logic testing system having a timing function or a clock pulse generator, subclass 744 for a digital logic testing system having a timing function or a clock pulse generator; subclass 775 for the detection and correction of a lack of synchronization between an encoder and a decoder used in a forward error correction by block code system, subclass 789 for the detection/correction of a lack of synchronization between an encoder and a decoder in a forward error correction by tree code system, subclass 798 for error detection techniques utilized to detect an out-of-synch condition or to control synchronization between devices.
718,	Electrical Computers and Digital Processing Systems: Virtual Machine Task or Process Management or Task Management/Control, appropriate subclasses for task management or control, particularly subclasses 102 through 108for process scheduling.

401	. Using delay:

This subclass is indented under subclass 400. Subject matter wherein the clock or timing signals, timing pulses, or data are delayed to provide synchronization.

SEE OR SEARCH CLASS:

307,	Electrical Transmission or Interconnection Systems, subclass 409 for circuits that include a delay for synchronization between logic stages in a nonlinear reactor.
318,	Electricity: Motive Power Systems, subclasses 141+ for automatic generator control with time delay and subclasses 445+ for motive power system with time delays, per se.
327,	Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, subclass 136 for particular delay or sync in a apparatus for generating sawtooth or triangle output, subclass 149 for multiple clocks feedback synchronizing apparatus having phase lock loop with variable delay means, subclasses 261+ for signal converting, shaping or generating having specific delay in producing output waveform, subclasses 392+ for delay controlled switch.
361,	Electricity: Electrical Systems and Devices, subclasses 195+ for time delay control circuits for relay or solenoid.

500	CLOCK, PULSE, OR TIMING SIGNAL GENERATION OR ANALYSIS:

This subclass is indented under the class definition. Subject matter including generation, division or distribution of a clock signal, pulse signal, or timing signal in the digital data processing system from one or more sources into a group of continuous and successive time increments; or including event timing and counting, or correction of a clock signal, pulse signal, or timing signal.

(1) Note. This subclass accepts signal generators producing several clock or timing signals, signal generators with changeable or programmable intervals, and generation of signals using a delay function or device. Particular components such as delay devices, per se, are classified elsewhere.

(2) Note. Mere nominal recitation of a computer or digital data processing system in combinations with a clock or timing generation circuit is not proper for this subclass. Timing generation circuits, per se, such as, oscillators, electrical pulse counters, pulse dividers, or shift register systems are classified elsewhere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

400,	for synchronization of clock or timing signals, data, or pulses in a digital data processing system.

SEE OR SEARCH CLASS:

326,	Electronic Digital Logic Circuitry, subclasses 93+ for clocking or synchronizing of logic stages or gates.
327,	Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, subclasses 100+ for signal converting, shaping, or generating, particularly subclass 164 for generating rectangular or pulse waveform having random characteristic, subclasses 165+ for regenerating or restoring rectangular or pulse waveform and subclasses 291+ for clock or pulse waveform generating.
331,	Oscillators, appropriate subclasses for oscillator, per se.
368,	Horology: Time Measuring Systems or Devices, appropriate subclasses.
375,	Pulse or Digital Communications, appropriate subclasses.
377,	Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems, appropriate subclasses.
702,	Data Processing: Measuring, Calibrating or Testing, subclasses 124+ for signal generator or waveform shaping in a testing system, particularly subclass 125 for timing signal generator in a testing system.

501	. Multiple or variable intervals or frequencies:

This subclass is indented under subclass 500. Subject matter including generation and selection of plural or variable timing intervals.

(1) Note. This subclass accepts selecting or programming a clock rate in a computer or digital data processing system. Setting system initial operating parameters through a booting process is classified elsewhere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1+,	for computer system booting, per se.

SEE OR SEARCH CLASS:

326,

Electronic Digital Logic Circuitry, subclass 96 for application of two or more time related or periodic signals to field-effect transistor for clocking or synchronizing.

327,

Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, subclass 152 for obtaining a single delayed clock from plural candidates, subclass 295 wherein multiple separate output waveforms are produced and appear at respective output terminals, subclass 296 wherein multiple clock waveforms are derived at circuit outputs from plural clock inputs, and subclass 298 wherein plural inputs are utilized to produce a single clock output.

502	. Counting, scheduling, or event timing:

This subclass is indented under subclass 500. Subject matter wherein counting is performed, an event is timed, or operation is scheduled using a generated interval.

SEE OR SEARCH CLASS:

377,	Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems, appropriate subclasses.
702,	Data Processing: Measuring, Calibrating, or Testing, subclasses 176+ for data processing system for measuring time duration or rate.
714,	Error Detection/Correction and Fault Detection/Recovery, subclasses 55+ for error detection or notification in timing using for example watchdog timer time-out; and subclass 815 wherein the time delay between events or data is detected to determine a predetermined forbidden condition.

503	. Correction for skew, phase, or rate:

This subclass is indented under subclass 500. Subject matter wherein a timing interval is corrected for skew or phase, or a rate is corrected by adjustment or alignment.

(1) Note. This subclass accepts clock and timing interval skew, phase and rate correcting in digital data processing systems and computers. Recovery from a fault caused by a timing interval skew is classified elsewhere.

SEE OR SEARCH CLASS:

326,	Electronic Digital Logic Circuitry, subclass 96 for application of two or more time related or periodic signals to field-effect transistor for clocking or synchronizing.
327,	Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, subclasses 156+ wherein a circuit compares the phase of an output signal with a reference signal and converts any difference into a correction voltage that changes the phase of the output so it matches that of the reference or input signal; subclass 292 wherein clock accuracy is ensured by correction for anticipated or actual clock errors.
714,	Error Detection/Correction and Fault Detection/Recovery, subclasses 1+ for reliability and availability, per se; subclass 700 for detection/correction of an error caused by the time delay between plural parallel bits forming a byte or data word.

600	CLOCK CONTROL OF DATA PROCESSING SYSTEM, COMPONENT, OR DATA TRANSMISSION:

This subclass is indented under the class definition. Subject matter wherein there is a significant temporal, incremental, or sequencing control provided to a digital data processing system, processor, memory or peripheral, or to data transmission between such systems or components.

(1) Note. This is a generic subclass for clock control of operations of digital data processing systems or components thereof and for timing and clock related control of movement of data between systems or components.

(2) Note. Nominally claimed clock control of apparatus external to this class in combination with apparatus under this subclass definition is classified in this subclass unless provided for in the appropriate external class.

(3) Note. Significantly claimed clock control of apparatus external to this class in combination with apparatus under this subclass definition, which perform data processing or transmission operations, is classified in the class appropriate to the external device unless specifically excluded therefrom.

SEE OR SEARCH CLASS:

340,	Communications: Electrical, subclasses 1.1 through 16.1for systems directed solely addressing and communication between signaling systems and signaling devices between a communication medium.
370,	Multiplex Communications, appropriate subclasses for systems directed solely to multiplexing, particularly subclasses 235+ for flow control of data through a network for data flow congestion prevention or control.
375,	Pulse or Digital Communications, appropriate subclasses for pulse modulation, transmitters, receivers, and synchronizers.

601	. Inhibiting timing generator or component:

This subclass is indented under subclass 600. Subject matter wherein a clock or interval generator or a component of the system is inhibited or stopped.

SEE OR SEARCH THIS CLASS, SUBCLASS:

322,	for computer power conservation by clock speed control (e.g., clock on/off).

FOR000

CLASS-RELATED FOREIGN DOCUMENTS

	This subclass has no definition.

ELECTRIC SIGNAL MODIFICATION (E.G., SCRAMBLING) (380/9)

	This subclass has no definition.

FOR 123

. Having cryptographic user or record actuated authentication (380/23):

	Foreign art collection under the class definition which encrypts a signal indicating proper authorization of an individual or validity of a record for operating a device.

FOR 125

.. Computer (380/25):

	Foreign art collection under collection 123 which encrypts and transmits authorization for access to computing or data processing equipment.

FOR 400

SYNCHRONIZATION OF PLURAL PROCESSORS:

	Foreign art collection under the class definition including subject matter wherein control or regulation of clocking or timing operations of two or more processors is synchronized.