Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – Having selection between plural continuous waveforms
Reexamination Certificate
2006-07-04
2006-07-04
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
Having selection between plural continuous waveforms
C327S144000, C327S407000
Reexamination Certificate
active
07071738
ABSTRACT:
A clock selection circuit includes an output multiplexer, control logic, and edge detection logic. The multiplexer includes inputs to receive multiple input clock signals, an output to generate the output clock signal, and a control terminal to receive a synchronized clock select signal. The control logic includes a first input to receive a clock select signal, a second input to receive a first control clock signal, a third input to receive a synchronization signal, and an output to selectively update the synchronized clock select signal with transitions in the clock select signal. The edge detection logic includes first inputs to receive the multiple input clock signals, a second input to receive a second control clock signal, and an output to generate the synchronization signal.
REFERENCES:
patent: 4893319 (1990-01-01), Ziuchkovski
patent: 5274678 (1993-12-01), Ferolito et al.
patent: 6429698 (2002-08-01), Young
patent: 6639449 (2003-10-01), De La Cruz et al.
patent: 6873183 (2005-03-01), Kaviani et al.
patent: 2003/0068000 (2003-04-01), Warren
patent: 2003/0223522 (2003-12-01), Fukushima
patent: 2004/0193975 (2004-09-01), Tarango et al.
patent: 2005/0172193 (2005-08-01), Warren
U.S. Appl. No. 10/436,781, filed May 12, 2003, Kaviani et al.
U.S. Appl. No. 10/453,235, filed Jun. 2, 2003, Vadi et al.
U.S. Appl. No. 10/837,329, filed Apr. 30, 2004, Vadi et al.
Nguyen Andy T.
Zhou Shi-dong
Callahan Timothy P.
Cox Cassandra
Liu Justin
Paradice III William L.
Xilinx , Inc.
LandOfFree
Glitchless clock selection circuit using phase 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 Glitchless clock selection circuit using phase detection..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Glitchless clock selection circuit using phase detection... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3584392