David M Oneal

US Patent:

6531926, Mar 11, 2003

Filed:

Sep 11, 2002

Appl. No.:

10/241015

Inventors:

Prayson Will Pate - Durham NC
Michael Joseph Poupard - Youngsville NC
Robert Leroy Lynch - Raleigh NC
David Lance ONeal - Raleigh NC
Emily Jean Skinner - Raleigh NC

Assignee:

Overture Networks, Inc. - Research Triangle Park NC

International Classification:

H03L 700

US Classification:

331 17, 331 10, 331 18, 331 25, 375376

Abstract:

A Phase-locked Loop (PLL) ( ) that is dynamically and automatically altered in response to changes in the jitter of the input is disclosed. The Analysis Block ( ) receives one or more inputs from the PLL operation. The output of the Analysis Block ( ) triggers a change in the Parametric Control Block ( ) which in turn imparts changes on the gains of one or more of the various components or the value of of the PLL Low Pass Filter ( ). The dynamic change to at least one parameter of the PLL adjusts the tradeoff between removing as much of the jitter as possible and having a responsive system that has a reduced risk of buffer underflow or overflow. This abstract is provided as a tool for those searching for relevant disclosures, and not as a limitation on the scope of the claims.