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:
Mar. 04, 2008
Filed:
Jan. 30, 2004
Jay Proano, Rancho Santa Margarita, CA (US);
Howard Baumer, Laguna Hills, CA (US);
Chung-jue Chen, Irvine, CA (US);
Ali Ghiasi, Cupertino, CA (US);
Vasudevan Parthasarathy, Irvine, CA (US);
Rajesh Satapathy, Lake Forest, CA (US);
Linda Ying, Irvine, CA (US);
Jay Proano, Rancho Santa Margarita, CA (US);
Howard Baumer, Laguna Hills, CA (US);
Chung-Jue Chen, Irvine, CA (US);
Ali Ghiasi, Cupertino, CA (US);
Vasudevan Parthasarathy, Irvine, CA (US);
Rajesh Satapathy, Lake Forest, CA (US);
Linda Ying, Irvine, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
A method is presented that monitors the quality of a communications channel. The method includes receiving a data signal and establishing a zero reference phase of the received data signal. The method further includes generating a phase-shifted data signal by phase shifting the received data signal relative to the zero reference phase, and sampling the phase-shifted data signal for one or more phase-shift positions. A zero reference phase is reestablished between sampling at each of the phase-shift positions. The method also includes detecting bit errors in the phase-shifted data signal at each of the phase-shift positions in order to provide a communications channel quality measurement. In an embodiment, the method includes generating an eye diagram according to a count of detected bit errors relative to a count of detected bits. The eye diagram characterizes the quality of the communications channel.