Industry Patents
Patent: 7719371
Spread Spectrum Clock and Reference Signal Generator
(Click image for PDF of full patent)
| Patent Number: |
7719371 |
| Title: |
Spread Spectrum Clock and Reference Signal Generator |
| Abstract: |
Exemplary embodiments of the invention provide a system, method and
apparatus for spread spectrum functionality for a free-running, reference
harmonic oscillator. In an exemplary embodiment, an apparatus comprises a
reference oscillator adapted to provide a reference signal having a
reference frequency; and a spread spectrum controller adapted to control
the reference oscillator to generate a spread-spectrum reference signal
at a plurality of different reference frequencies during a predetermined
or selected time period. An exemplary apparatus may also include a
coefficient register adapted to store a plurality of coefficients and a
plurality of controlled reactance modules responsive to a corresponding
coefficient of the plurality of coefficients to modify an amount of
reactance effectively coupled to the reference oscillator. An exemplary
spread spectrum controller is further adapted to sequentially modify the
plurality of coefficients during the predetermined time period to provide
the spread spectrum reference signal.
|
| Country of Issue: |
US |
| First Named Inventor: |
Pernia, Carichner, Marsman, McCorquodale |
| Assignee: |
Integrated Device Technology |
| Continuation or Divisional of: |
|
| International Classification: |
H03B 29/00 |
| US Classification: |
331/78 |
| Issue Date: |
05-18-2010 |
| Filing Date: |
12-30-2007 |
| Application : |
11/967234 |
| Notes: |
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| Link to Patent at freepatentsonline.com: |
7719371 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7719371 at Google Patents |
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