US PATENT SUBCLASS 714 / 12
.~.~.~.~.~ Synchronization maintenance of processors

Current as of: June, 1999
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714 /   HD   ERROR DETECTION/CORRECTION AND FAULT DETECTION/RECOVERY

1  DF  RELIABILITY AND AVAILABILITY {4}
2  DF  .~ Fault recovery {4}
3  DF  .~.~ By masking or reconfiguration {4}
10  DF  .~.~.~ Of processor {2}
11  DF  .~.~.~.~ Concurrent, redundantly operating processors {1}
12.~.~.~.~.~ Synchronization maintenance of processors

DEFINITION

Classification: 714/12

Synchronization maintenance of processors:

(under subclass 11) Subject matter further including means or steps for maintaining processor state synchronization to achieve redundancy of operation.

(1) Note. Classification here requires a redundant processor for the purpose of reliability, such as by consideration of state of internal registers and the like of the redundant processors and thus the machines themselves.

Synchronization in the form of timing and clock skew is classified elsewhere. See the SEE OR SEARCH THIS CLASS, SUBCLASS notes below.

(2) Note. Classification here requires the existence of a fault condition. Synchronization maintenance at the clock level, however, is classified elsewhere. See the search class notes below.

SEE OR SEARCH CLASS

375, Pulse or Digital Communications,

354+, for communications synchronizing.

709, Electrical Computers and Digital Processing Systems-Multiple Computer or Process Coordinating, appropriate subclasses for multicomputer and synchronizing, and for synchronization maintenance of plural processors, per se. 712, Electrical Computers and Digital Processing Systems-Processing Architecture or Instruction Processing (e.g., Processors), appropriate subclasses for task management, per se.

713, Electrical Computers and Digital processing Systems-Support,

400+, for clock synchronization, per se, subclasses 500+, for digital data processing system clock, pulse and timing interval generation, per se.