Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital logic testing
Reexamination Certificate
2007-08-28
2007-08-28
Ton, David (Department: 2138)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital logic testing
C714S727000
Reexamination Certificate
active
10911033
ABSTRACT:
A method is disclosed for the automated synthesis of phase shifters. Phase shifters comprise circuits used to remove effects of structural dependencies featured by pseudo-random test pattern generators driving parallel scan chains. Using a concept of duality, the method relates the logical states of linear feedback shift registers (LFSRs) and circuits spacing their inputs to each of the output channels. The method generates a phase shifter network balancing the loads of successive stages of LFSRs and satisfying criteria of reduced linear dependency, channel separation and circuit complexity.
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Rajski Janusz
Tamarapalli Nagesh
Tyszer Jerzy
Klarquist & Sparkman, LLP
Ton David
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