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 7876127 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 25, 2011

Filed:

Aug. 07, 2009
Applicants:

Liang-an Zheng, Tainan County, TW;

Pu-jen Cheng, Tainan, TW;

Shinn-horng Chen, Kaohsiung, TW;

Inventors:

Liang-An Zheng, Tainan County, TW;

Pu-Jen Cheng, Tainan, TW;

Shinn-Horng Chen, Kaohsiung, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/173 (2006.01); H03K 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An automatic hold time fixing circuit unit includes a first switch having first and second ends connected to data input and output ports. An input end of a memory element is connected to the second end of the first switch. A second switch includes a first end connected to an output end of the memory element and a second end connected to the data output port. A control circuit includes first and second output terminals and first and second input terminals. The first and second output terminals are connected to control ends of the first and second switches. The first and second input terminals allow input of two clocks to the control circuit for controlling connection or disconnection of the first and second switches. The data stored in the memory element can be utilized to fix a hold time of the data, so that correct data can be obtained at the data output port.


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