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:
Jun. 11, 1996
Filed:
Apr. 20, 1992
Naohisa Mukohzaka, Shizuoka, JP;
Hamamatsu Photonics K.K., Shizuoka, JP;
Abstract
An optical associative memory in which processing data by optical operations permits simplification in circuit arrangement, a shorter processing time and the generation of successive outputs. The associative memory includes multiplying system for multiplying an input signal or a feedback signal, and a magnifying system for magnifying the input signal or said feedback signal. The associative memory also includes a first operational device for producing a first signal representing a product of the output of said multiplying system and the output of said magnifying system, a memory means for storing two-dimensional information and for outputting the content thereof as required, a second operational device for producing a product of the output of the memory means and the output of the multiplying system, an inversely multiplying system for inversely multiplying the output from said second operational device, a threshold memory for storing, while thresholding, the output from the the inversely multiplying system, and for outputting the content thereof as required and a feedback loop for feeding back the output of the threshold memory as the feed back signal.