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. 26, 1980
Filed:
Jun. 26, 1978
Kenjiro Sakurai, Tokyo, JP;
Junichi Shimada, Tokyo, JP;
Takitaro Morikawa, Sayama, JP;
Yoshinobu Mitsuhashi, Tokyo, JP;
Satoshi Ishihara, Tanashi, JP;
Atsuya Seko, Higashi-Murayama, JP;
Tetsutaro Yasuhira, Tokyo, JP;
Agency of Industrial Science & Technology, Tokyo, JP;
Abstract
Disclosed is an optical memory playback apparatus using an electroluminescent semiconductor element as a combination light source and sensor, which apparatus permits information in an information storage medium to be reproduced in the form of variation in electrical characteristics of the semiconductor element by causing a beam of light issuing from the electroluminescent semiconductor element to be directed to the information storage medium, allowing the light reflected by the information storage medium to impinge on the semiconductor element for thereby inducing variation in the optical and electrical characteristics of the semiconductor element owing to the self-coupling effect.