06046646 is referenced by 32 patents and cites 7 patents.

Apparatus and methods for controlling the frequency spectrum of a clock signal, for example, to reduce EMI emissions. A PLL circuit receives a reference signal and generates an output clock signal. A modulating circuit is coupled to the PLL and generates a modulating signal. The PLL receives the modulating signal and accordingly varies the frequency spectrum of the output clock signal.

Title
Modulation of a phase locked loop for spreading the spectrum of an output clock signal
Application Number
9/95784
Publication Number
6046646
Application Date
June 11, 1998
Publication Date
April 4, 2000
Inventor
Gregory J Richmond
833 Pear Ave., Sunnyvale, 94087
CA, US
Pedro W Lo
141 Del Medio Ave. #124, Mountain View, 94040
CA, US
Agent
Townsend and Townsend and Crew
IPC
H03L 7/093
H03L 7/089
H03L 7/087
H03D 3/09
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