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:
Dec. 07, 2004
Filed:
Mar. 06, 2001
Atsuhiko Okada, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A correlation value calculating device which has a small scale of circuitry, and allows template vectors to be rewritten. One template vector is written to one row of DRAM memory cells. One memory cell pair is used for storing one template vector component. A high-level is written to one memory cell and a low-level is written to the other memory cell according to the value of the template vector component. When calculating a correlation value, one memory cell of each memory cell pair is respectively connected to corresponding bit line according to the corresponding input vector component. If the components of both vectors are matched, the memory cell of the high-level is connected to the bit line, and if both vectors are not matched, the memory cell of the low-level is connected to the bit line. The electric potential of bit lines each become to indicate the correlation value.