US PATENT SUBCLASS 714 / 2
.~ Fault recovery

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.~ Fault recovery {4}
3  DF  .~.~> By masking or reconfiguration {4}
15  DF  .~.~> State recovery (i.e., process or data file) {6}
23  DF  .~.~> Resetting processor
24  DF  .~.~> Safe shutdown

DEFINITION

Classification: 714/2

Fault recovery:

(under subclass 1) Subject matter further including means or steps for responding to a failure 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 after detecting the error or locating the fault.

(1) Note. Classification here requires significant data processing features claimed. For fault recovery in a system without significant data processing method or apparatus, classification is elsewhere. See the SEE OR SEARCH THIS CLASS, SUBCLASS and SEE OR SEARCH CLASS notes below.

(2) Note. Classification here requires notification or detection of the fault, its location, and a further action. Subcombinations used in the process of fault recovery; e.g., fault locating, are classified below.

(3) Note. "Page faults" are a species of faults peculiar to memory accessing and are classified elsewhere in this class. See the SEE OR SEARCH THIS CLASS, SUBCLASS notes below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

746+, for data error detection and correction of general utility.

SEE OR SEARCH CLASS 711, Electrical Computers and Digital Processing Systems: Memory,

133+, for entry replacement strategies and page fault recovery.