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.

Date of Patent:
Jul. 26, 2016

Filed:

Feb. 15, 2012
Applicants:

Quanqing Zhu, Shanghai, CN;

Guangming Yin, Newport Coast, CA (US);

Inventors:

Quanqing Zhu, Shanghai, CN;

Guangming Yin, Newport Coast, CA (US);

Assignee:

QUALCOMM Incorporated, San Diego, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/00 (2006.01); H02H 3/22 (2006.01); H04L 25/02 (2006.01);
U.S. Cl.
CPC ...
H02H 3/22 (2013.01); H04L 25/028 (2013.01); H04L 25/0272 (2013.01);
Abstract

An integrated circuit device () includes a first and second differential I/O pins (TRXP/TRXN) and a surge protection circuit. The surge protection circuit includes a protection transistor, a positive surge detection circuit, and a negative surge detection circuit. The protection transistor is connected between the first and second I/O pins and has a gate to receive a control signal (CTRL). The protection transistor is turned on to connect the I/O pins together if the positive surge detection circuit detects a positive surge energy on either of the I/O pins and/or if the negative surge detection circuit detects a negative surge energy on either of the I/O pins. The surge protection circuit provides increased protection for Ethernet device against undesirable energy in a manner that does not adversely affect the performance of the device.


Find Patent Forward Citations

Zhu, Quanqing. (2016). Surge protection for differential input/output interfaces (U.S. Patent No. 9401594). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9401594

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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