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:
Oct. 18, 2011

Filed:

Apr. 29, 2009
Applicant:

Chien-hui Chuang, Taipei County, TW;

Inventor:

Chien-Hui Chuang, Taipei County, TW;

Assignee:

Mediatek Inc., Science-Based Industrial Park, Hsin-Chu, TW;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/22 (2006.01);
U.S. Cl.
CPC ...
Abstract

A buffer device includes a first driving circuit coupled between a signal terminal of the buffer device and a first reference potential, a current-limiting component including a first terminal coupled to the signal terminal, and a second driving circuit coupled between a second terminal of the current-limiting component and a second reference potential, wherein the current-limiting component limits an amount of ESD current flowing through the second driving circuit, and makes an amount of ESD current flowing through the first driving circuit be larger than the amount of ESD current flowing through the second driving circuit.


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