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.:
Date of Patent:
Jun. 09, 2009
Filed:
Feb. 21, 2007
Yousuke Kuroiwa, Osaka, JP;
Hideo Fukuda, Kyoto, JP;
Hiroshi Yamaguchi, Osaka, JP;
Tetsuo Chato, Osaka, JP;
Yuzo Shimizu, Osaka, JP;
Masaki Taniguchi, Kyoto, JP;
Yousuke Kuroiwa, Osaka, JP;
Hideo Fukuda, Kyoto, JP;
Hiroshi Yamaguchi, Osaka, JP;
Tetsuo Chato, Osaka, JP;
Yuzo Shimizu, Osaka, JP;
Masaki Taniguchi, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The test circuit according to the present invention includes: a plurality of light-receiving elements; a plurality of amplifiers, each of which converts, into a voltage, a photoelectric current supplied from one of the light-receiving elements; and an electric current supplying unit which supplies an electric current to each of the light-receiving elements and each of the amplifiers. In this test circuit, the electric current supplying unit selectively supplies an electric current to a first group of light-receiving elements and to a second group of light-receiving elements, the first group of light-receiving elements including light-receiving elements, out of the plurality of light-receiving elements, which are neither vertically nor horizontally adjacent to each other, and the second group of light-receiving elements including light-receiving elements, out of the plurality of light-receiving elements, which are vertically or horizontally adjacent to the light-receiving elements of the first group of light-receiving elements.