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:
May. 18, 2010

Filed:

Feb. 14, 2003
Applicants:

Masahiro Yokomichi, Chiba, JP;

Satoshi Machida, Chiba, JP;

Yoshihiro Shibuya, Chiba, JP;

Yukito Kawahara, Chiba, JP;

Minoru Ariyama, Chiba, JP;

Inventors:

Masahiro Yokomichi, Chiba, JP;

Satoshi Machida, Chiba, JP;

Yoshihiro Shibuya, Chiba, JP;

Yukito Kawahara, Chiba, JP;

Minoru Ariyama, Chiba, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/28 (2006.01); H04N 1/46 (2006.01);
U.S. Cl.
CPC ...
Abstract

A scanning circuit has path switches connected between a plurality of data flip-flop circuits of the scanning circuit for sequentially reading an output signal in synchronism with a clock. A plurality of control signal lines select the path switches to arbitrarily skip reading of the flip-flop circuits that do not require the scanning circuit and always fix a potential of the skipped data flip-flop circuit. Only the arbitrary data is read, and in the case where unnecessary data exists, reading is skipped, to thereby increase the read rate.


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