Thermometer code generator, and frequency-locked loop...

Details Thermometer code generator, and frequency-locked loop... Thermometer code generator, and frequency-locked loop...

2007-08-23

2009-12-29

Chang, Joseph (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

C341S187000, C327S157000

Reexamination Certificate

active

07639086

ABSTRACT:
A thermometer code generator includes n bit storing stages that are coupled to each other, where n is an integer greater than 1, and the n bit storing stages store a thermometer code, and are adapted to increase the stored thermometer code by 1 in synchronization with a clock signal when an up signal is active, to decrease the stored thermometer code by 1 in synchronization with the clock signal when a down signal is active, and to maintain the stored thermometer code in synchronization with the clock signal when both of the up signal and the down signal are inactive.

REFERENCES:
patent: 5446867 (1995-08-01), Young et al.
patent: 6803827 (2004-10-01), Kenney et al.
patent: 7352297 (2008-04-01), Rylyakov et al.
patent: 2005/0017878 (2005-01-01), Armstrong
patent: 2005/0117404 (2005-06-01), Savoj

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