Patent · US Active

Spread spectrum clock signal generator

US8259774B2 · kind B2 · utility

1Cited by

2References

16Claims

0Family size

Assignee

RAYDIUM SEMICONDUCTOR CORPORATION · TW

Inventors

Chien-Yu Chan · Hsinchu, TW
Shao-Ping Hung · 東區, TW
Jun-Ren Shih · Changhua City, TW

Key dates

Filing date	Jun 4, 2009
Grant date	Sep 4, 2012
Priority date	—
Expiry date	Jul 6, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04B15/04
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A spread spectrum clock signal generator for spreading an input clock signal into an output clock signal includes a clock signal delay chain for delaying the input clock signal into a delay clock signal group having a plurality of delay clock signals, a modulation controller for outputting a counter clock signal control signal, a clock signal selection circuit for selecting, from the delay clock signal group, a modulation clock signal group having a plurality of modulation clock signals, a programmable counter for generating a counting value according to a counter clock signal, and a clock signal output unit for combining the modulation clock signals into the output clock signal according to the counting value, and further generating the counter clock signal, outputted to the programmable counter, according to the counter clock signal control signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.