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:
Apr. 04, 1989
Filed:
Aug. 25, 1987
Motomu Yoshimura, Amagasaki, JP;
Mitsubishi Denki K.K., Tokyo, JP;
Abstract
An optical recording system which includes a recording medium of which the light absorption spectrum changes when exposed to light; a first transparent substrate provided on a first side of the recording medium; a plurality of first parallel transparent elongated electrodes provided on the first substrate; a second substrate provided on a second side of the recording medium opposite to the first side; a plurality of second parallel elongated electrodes provided on the second substrate in the direction perpendicular to the first elongated electrodes so as to form a plurality of recording spots at their intersections; a light source for directing a light beam to a plurality of the recording spots on the recording medium; and an electric field applying device for controlling the field strength of an electric field applied to a plurality of the recording spots to control the degree of change in the light absorption spectrum so that multiplex information recording is made in a dimension of electric field.