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:
Jul. 12, 2011
Filed:
Oct. 04, 2010
William Lo, Cupertino, CA (US);
Tak-lap Tsui, Sunnyvale, CA (US);
William Lo, Cupertino, CA (US);
Tak-Lap Tsui, Sunnyvale, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
A first physical layer (PHY) device includes an auto-negotiation module, a first cable-length measuring module, and a first control module. The auto-negotiation module exchanges data rates of the first PHY device and a second PHY device. The first PHY device is connected to the second PHY device by a cable. The first cable-length measuring module performs a first measurement of a length of the cable. The first control module selectively receives a second measurement of the length of the cable from the second PHY device, and selects a data rate of the first PHY device from the data rates of the first PHY device and the second PHY device based on (i) the first measurement of the length of the cable performed by the first cable-length measuring module of the first PHY device, or (ii) the second measurement of the length of the cable received from the second PHY device.