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:
Feb. 19, 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 system is presented that monitors the quality of a communications channel with mirror receivers. A first receiver and a second receiver, coupled in parallel with the first receiver, receive a data signal transmitted over the communications channel. The second receiver generates an output signal. A signal integrity (SI) processor manipulates the output signal in order to determine the quality of the communications channel. The SI processor samples a phase-shifted version of the output signal, which has a phase shifted relative to a zero reference phase, and analyzes the phase-shifted version of the output signal for bit errors. In an embodiment, the SI processor manipulates the output signal to extract an eye diagram indicative of the quality of the communications channel. The SI processor non-intrusively determines the quality of the communications channel using the second receiver.