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:
Jun. 23, 2009
Filed:
Apr. 02, 2007
Willaim Lo, Cupertino, CA (US);
Yi Cheng, San Jose, CA (US);
Leechung Yiu, Fremont, CA (US);
Calvin Fang, Milpitas, CA (US);
Willaim Lo, Cupertino, CA (US);
Yi Cheng, San Jose, CA (US);
Leechung Yiu, Fremont, CA (US);
Calvin Fang, Milpitas, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
A first network device comprises first and second transformers that communicate with a second network device. A switch selectively connects power to the first and second transformers. A physical layer device communicates with the first and second transformers and includes a signal generator, a detector, and a controller that communicates with the switch, the signal generator and the detector. The signal generator generates a test signal comprising n sub-pulses, where n is an integer greater than 2. When the detector detects j pulses that are greater than a predetermined threshold, 1≦j<n, the controller supplies power to the second network device, where j is an integer.