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. 20, 1990
Filed:
May. 20, 1988
Masatoshi Ishikawa, Ibaraki, JP;
Naohisa Mukohzaka, Shizouka, JP;
Agency of Industrial Science and Technology, Tokyo, JP;
Hamamatsu Photonics K.K., Shizuoka, JP;
Abstract
An opto-electric hybrid associative memory and corresponding storage and retrieval method employs a pair of spatial light modulators in tandem with polarization analyzer arrangements providing optical multiplication and employs multiple conversions between n.times.n matrices and n.sup.2 .times.n.sup.2 matrices, with the aid of a digital computer and a parallel analog processing circuit, to perform repetitive electrical correlation and conversion operations. Serial scanning of the optical patterns is avoided because the spatial light modulators employ photocathodes, microchannel plates and Pockels cells having back surfaces that are optically-reflective electrical-charge-storing surfaces of long retention capabilities. Repetitive cycling of reference patterns through the memory/method tend to restore missing portions of data.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile