Electrical computers and digital processing systems: support – Clock – pulse – or timing signal generation or analysis – Multiple or variable intervals or frequencies
Reexamination Certificate
2005-08-09
2005-08-09
Browne, Lynne H. (Department: 2116)
Electrical computers and digital processing systems: support
Clock, pulse, or timing signal generation or analysis
Multiple or variable intervals or frequencies
C713S500000, C713S503000, C375S354000, C375S355000
Reexamination Certificate
active
06928574
ABSTRACT:
A system and method for transferring data from circuitry disposed in a lower frequency clock domain actuated by a first clock signal to circuitry disposed in a higher frequency clock domain actuated by a second clock signal, wherein the first and second clock signals are provided in a predetermined frequency ratio. A latch gated by the first clock signal is operable to generate latched data, which is provided to a first register disposed in the higher frequency clock domain. The first register, clocked by a modified clock signal that is synthesized by a logic circuit using the second clock signal and a plurality of intermediary clock signals derived from the second clock signal, is operable to generate registered data. A second register is operable to synchronize the registered data into a data output for subsequent use by the circuitry disposed in the higher clock frequency domain.
REFERENCES:
patent: 5369672 (1994-11-01), Matsumoto
patent: 5548620 (1996-08-01), Rogers
patent: 5600824 (1997-02-01), Williams et al.
patent: 5708801 (1998-01-01), Williams et al.
patent: 5905766 (1999-05-01), Nguyen
patent: 5930311 (1999-07-01), Lovelace et al.
patent: 6163545 (2000-12-01), Flood et al.
patent: 6345328 (2002-02-01), Rozario et al.
Browne Lynne H.
Hewlett--Packard Development Company, L.P.
Yanchus, III Paul
LandOfFree
System and method for transferring data from a lower... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for transferring data from a lower..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for transferring data from a lower... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3499738