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:
Jul. 23, 1991
Filed:
Jul. 06, 1989
Kazutoshi Nakajima, Shizuoka, JP;
Hirofumi Kan, Shizuoka, JP;
Kenichi Sugimoto, Shizuoka, JP;
Yoshihiko Mizushima, Shizuoka, JP;
Toru Hirohata, Shizuoka, JP;
Takashi Iida, Shizuoka, JP;
Yoshihisa Warashina, Shizuoka, JP;
Toru Hirohata, , US;
Takashi Iida, , US;
Hamamatsu Photonics Kabushiki Kaisha, Shizuoka, JP;
Abstract
An optical memory circuit comprises two photodetectors, and an intermediate signal conductor for connecting the two photodetectors, wherein the two photodetectors and the signal conductor are connected in series in a closed circuit, wherein each of the photodetectors comprises two spaced Schottky electrodes symmetrically disposed on a semiconductor substrate and the signal conductor has a capacitance with a time constant of a potential of the signal conductor such that charges are stored in the signal conductor when an optical write signal is incident on one photodetector and stored charges are released from the signal conductor when an optical read signal is incident on the other photodetector.