The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 2009
Filed:
Feb. 25, 2004
Applicants:
Hamid Partovi, Sunnyvale, CA (US);
William P. Evans, Catonsville, MD (US);
Inventors:
Hamid Partovi, Sunnyvale, CA (US);
William P. Evans, Catonsville, MD (US);
Assignee:
Infineon Technologies AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A clock signal can be synthesized by performing a clock and data recovery (CDR) operation on a potentially noisy clock source signal which has a known transition density. The CDR operation produces a desired clock signal in response to the clock source signal. In order to reduce crosstalk between plesiochronous receive and transmit clock domains of a serial data transceiver, a single common PLL is used both to recover the receive clock from the received data and to synthesize the transmit clock from a potentially noisy transmit clock source signal.