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:
Jan. 15, 2013
Filed:
Dec. 30, 2011
Asif Hussain, Tustin, CA (US);
Manisha Pandya, Anaheim Hills, CA (US);
Farzan Roohparvar, Monte Sereno, CA (US);
John Perzow, Fort Collins, CO (US);
Asif Hussain, Tustin, CA (US);
Manisha Pandya, Anaheim Hills, CA (US);
Farzan Roohparvar, Monte Sereno, CA (US);
John Perzow, Fort Collins, CO (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
A system and method of analyzing a powered device (PD) in a Power-over-Ethernet (PoE) system are presented. The system includes an Ethernet interface having a physical layer (PRY) chip capable of providing a signal pulse in addition to physical layer 1 functions. The system further includes a pulse transformer, coupled to the PRY chip, capable of relaying the signal pulse provided by the PRY chip to the PD via the transmit line and a second PRY chip. The first PRY chip receives one or more return pulse signals from the PD, analyzes characteristics such as voltage and/or frequency of the return pulse signal(s), and determines attributes of the PD based on those characteristics. The attributes can include powered device validity and power classification. A method of supplying power to a PD is also presented.