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 8525568 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 03, 2013

Filed:

Aug. 22, 2011
Applicants:

Zhaolei Wu, Chengdu, CN;

Yalan LV, Chengdu, CN;

Guosheng Wu, Chengdu, CN;

Inventors:

Zhaolei Wu, Chengdu, CN;

Yalan Lv, Chengdu, CN;

Guosheng Wu, Chengdu, CN;

Assignee:

IPGoal Microelectronics (SiChuan) Co., Ltd., Chengdu, Sichuan Province, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/04 (2006.01); H03K 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A clock generation circuit, includes a first current source, a resistor connected to the first current source, a second current source, a first demux circuit connected to the second current source, a second demux circuit connected to the second current source, a capacitor connected to the first demux circuit and the second demux circuit, a first comparator connected to the first current source and the capacitor, a second comparator connected to the first current source and the capacitor, and a RS trigger connected both to the first comparator and the second comparator. The present invention has simple structure, small process variation, and lower cost, and is able to improve the accuracy of the clock with maximum possibility.


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