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. 31, 2012

Filed:

Dec. 01, 2010
Applicant:

Shinichi Saitoh, Kyoto, JP;

Inventor:

Shinichi Saitoh, Kyoto, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

Multiple flip-flops each latch input data at a time point of the corresponding clock signal. The i-th (i represents an integer) first logical gate generates an internal up signal which is asserted when the output of the (2×i−1)-th flip-flop does not match the output of the (2×i)-th flip-flop. The j-th (j represents an integer) second logical gate generates an internal down signal which is asserted when the output of the (2×j)-th flip-flop does not match the output of the (2×j+1)-th flip-flop. A third logical gate generates an up signal based upon the multiple internal up signals. A fourth logical gate generates a down signal based upon the multiple internal down signals.


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