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:
Feb. 13, 2007
Filed:
Feb. 23, 2005
Morio Wada, Tokyo, JP;
Akira Miura, Tokyo, JP;
Tsuyoshi Yakihara, Tokyo, JP;
Sadaharu Oka, Tokyo, JP;
Chie Sato, Tokyo, JP;
Katsuya Ikezawa, Tokyo, JP;
Shinji Kobayashi, Tokyo, JP;
Shinji Iio, Tokyo, JP;
Daisuke Hayashi, Tokyo, JP;
Morio Wada, Tokyo, JP;
Akira Miura, Tokyo, JP;
Tsuyoshi Yakihara, Tokyo, JP;
Sadaharu Oka, Tokyo, JP;
Chie Sato, Tokyo, JP;
Katsuya Ikezawa, Tokyo, JP;
Shinji Kobayashi, Tokyo, JP;
Shinji Iio, Tokyo, JP;
Daisuke Hayashi, Tokyo, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
A photoelectric apparatus has a phototransistor which receives a light signal and in which a collector current thereof varies according to intensity of the received light signal, and a transistor in which a collector current thereof varies according to a base voltage thereof. The phototransistor and the transistor constitute a differential amplification circuit. At least one of the phototransistor and the transistor outputs an electric signal.