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:
Sep. 27, 2011
Filed:
Mar. 14, 2008
Wael William Diab, San Francisco, CA (US);
Sesha Thalpasai Panguluri, Santa Clara, CA (US);
Hemanth Nekkileru, San Jose, CA (US);
Wael William Diab, San Francisco, CA (US);
Sesha Thalpasai Panguluri, Santa Clara, CA (US);
Hemanth Nekkileru, San Jose, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
A system and method for power sourcing equipment (PSE) detection of a powered device (PD) power failure for power backup. A PSE can power a PD at a low level of power as a backup power source. Upon a failure in the PDs primary power source, the PSE can detect a transient (e.g., current and/or voltage) on the PD load as a signal that the PD requires additional power. The PSE can then allocate increased power to the port by entering into an active state as compared to a backup state. As the PSE is responsive to the detection of the transient, the PSE need not rely on a real-time communication from the PD.