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.:

US 8289302 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 16, 2012

Filed:

Jan. 06, 2009
Applicants:

Yi-jan Emry Chen, Taipei, TW;

Pang-jung Liu, Taipei, TW;

Jyun-ping Jiang, Taipei, TW;

Tsung-yu Wu, Tainan, TW;

Inventors:

Yi-Jan Emry Chen, Taipei, TW;

Pang-Jung Liu, Taipei, TW;

Jyun-Ping Jiang, Taipei, TW;

Tsung-Yu Wu, Tainan, TW;

Assignees:

Himax Technologies Limited, Tainan County, TW;

National Taiwan University, Taipei, TW;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/038 (2006.01);
U.S. Cl.
CPC ...
Abstract

An output buffer circuit with enhanced slew rate is disclosed. A first and a second slew-rate enhancing transistor are configured to enhance the slew rate of the source transistor and the sink transistor of an output stage. A first control circuit and a second control circuit turn off the first and the second slew-rate enhancing transistors during the static state, and turn on the first and the second slew-rate enhancing transistors during the transition.


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