System and method for automatically-detecting soft errors in...

Details System and method for automatically-detecting soft errors in... System and method for automatically-detecting soft errors in...

2005-12-13

2005-12-13

Tweel, Jr., John (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C714S010000, C714S800000

Reexamination Certificate

active

06975238

ABSTRACT:
A circuit and method for detecting soft errors produced in latches. An exemplary embodiment of a circuit includes a block of concatenated latches, each latch having a comparator, with an output from the final latch comparator representing a parity bit for the latch block. The circuit further includes a element to store the block parity bit, and a comparator for the block parity bit and stored parity bit. A latch soft error is detected by monitoring an output from the parity bit comparator, which signals an error when the latch block parity bit changes state.

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