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:
Nov. 11, 1980
Filed:
Aug. 14, 1978
Reisuke Sato, Kawagoe, JP;
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
The present invention is a light receiving circuit which includes an active device and light responsive switching device. The active device has an emitter, a base and a collector, the base being responsive to a first constant voltage source and the collector being responsive to a second voltage source. The light responsive switching device has a first lead and a second lead, the first lead being connected electrical ground and the second lead being connected to the emitter of the active device. The light receiving circuit of the present invention exhibits a high response speed and a stable output waveform. In another embodiment, the light receiving circuit of the present invention includes two active devices and two light responsive switching devices.