Error detection/correction and fault detection/recovery

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714

SECTION I - CLASS DEFINITION

This class provides for process or apparatus for detecting and correcting errors in electrical pulse or pulse coded data.

This class also provides for process or apparatus for detecting and recovering from faults in electrical computers and digital data processing systems, as well as logic level based systems.

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Subclass

Title

4

Of network

1095 Patents

Crash recovery system

Apparatus for switch path verification

Distributed computing network

Persistent reservation IO barriers

Guaranteed reliable broadcast network

High-availability architecture using high-speed pipes

Distributed session services

Information routing for transfer buffers

Mechanism for fail-over notification

Subscriber terminating equipment

Method of restoring transmission line

Cluster-wide database system

Socket extensions for redundancy

6

Redundant stored data accessed (e.g., duplicated data, error correction coded data, or other parity-type data)

1374 Patents

Data storage system and method

Storage unit subsystem

Teletext magazine code detector

Discrete mapping of parity blocks

Remote data duplexing

Failure-tolerant mass storage system

Host-based RAID-5 and NV-RAM integration

Computer data file backup system

Flexible parity generation circuit

38

Of computer software

948 Patents

Simulation display system

Efficient program debugging system

Performance analysis of computer systems

Microprogram-testing apparatus

Diagrammatic method of testing program

Debugger thread monitor

Method for detecting program errors

Trace on/off with breakpoint register

Driver level diagnostics

Aircraft flat panel display system

Aircraft flat panel display system

Fault tolerant task dispatching

Input/output driver for benchmark testing

Load test system and method

Microcomputer debug architecture and method

718

Memory testing

1152 Patents

Memory efficient topological converter assembly

Data processor with built-in DRAM

Semiconductor integrated circuit

State tracer system

Test mode latching scheme

Memory test circuit

Semiconductor device

Semiconductor memory

Fault-tolerant data transfer

Bit error measuring apparatus

IC element testing device

Powerfail durable NVRAM testing

File system block sub-allocator

Semiconductor memory testing apparatus

Memory testing apparatus

Packet-based device test system

724

Digital logic testing

1232 Patents

Modular/concurrent board tester

Accelerated mode tester timing

Individual test program producing system

Circuit for evaluating signal timing

Digital process monitor

System scan path architecture

Fault sensing circuit and method

Method for automatic open-circuit detection

Method for checking hardware errors

Self-testing logic with embedded arrays

736

Device response compared to expected fault-free response

594 Patents

Logic circuit test system

Random pattern self test design

Method of testing logic devices

Integrated circuit control

Non-destructive memory testing in computers

Software verification apparatus

Data path chip test architecture

Integrated circuit having self-testing function

In-circuit emulator

Servovalve analyzer system

100

DATA PROCESSING SYSTEM ERROR OR FAULT HANDLING

52 Patents

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Reliability and availability

300 Patents

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Fault recovery

397 Patents

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By masking or reconfiguration

192 Patents

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Of memory or peripheral subsystem

564 Patents

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Reconfiguration (e.g., adding a replacement storage component)

509 Patents

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Isolating failed storage location (e.g., sector remapping)

328 Patents

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Access processor affected (e.g., I/O processor, MMU, DMA processor)

117 Patents

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Of processor

363 Patents

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Concurrent, redundantly operating processors

479 Patents

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12

Synchronization maintenance of processors

219 Patents

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Prepared backup processor (e.g., initializing cold backup) or updating backup processor (e.g., by checkpoint message)

318 Patents

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Of power supply

180 Patents

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State recovery (i.e., process or data file)

543 Patents

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Forward recovery (e.g., redoing committed action)

161 Patents

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Reexecuting single instruction or bus cycle

68 Patents

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18

Transmission data record (e.g., for retransmission)

135 Patents

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Undo record

79 Patents

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Plural recovery data sets containing set interrelation data (e.g., time values or log record numbers)

257 Patents

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(Class No. 081)
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