Automated clock relationship detection

Details Automated clock relationship detection Automated clock relationship detection

2011-08-09

2011-08-09

Du, Thuan N (Department: 2116)

Electrical computers and digital processing systems: support

Clock, pulse, or timing signal generation or analysis

Multiple or variable intervals or frequencies

C713S400000, C713S503000, C375S354000, C375S371000, C327S003000

Reexamination Certificate

active

07996701

ABSTRACT:
Automated clock relationship detection may quickly and reliably detect a clock relationship with minimal latency while reducing problems due to metastability occurring at a solitary instant or extended over multiple clock periods. Automated clock relationship detection between two clocks may comprise (a) a shift register synchronizer that reduces the possibility of metastability while capturing and temporarily storing samples of the first clock in response to cycles of the second clock and (b) an evaluator that processes the samples to determine the relationship. A clock relationship detector may also determine the relationship of two clocks by arbitrating a plurality of preliminary determinations of the relationship. Delays may be applied so that each of several detectors receives a clock at a different time, which may avoid metastability in the majority of detectors. The relationship may be used to reliably determine an operating mode of logic driven by one of the clocks.

REFERENCES:
patent: 5008904 (1991-04-01), Mangelsdorf et al.
patent: 7295641 (2007-11-01), Wortman et al.
patent: 7321978 (2008-01-01), Brodsky

Affiliated with

Also associated with

Rating

Automated clock relationship detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automated clock relationship detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automated clock relationship detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2654856