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:
Sep. 24, 1991
Filed:
Aug. 20, 1990
Kouzi Tanagawa, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
An EEPROM system with an error detecting function includes: a memory cell matrix composed of a plurality of MOS memory cells and a plurality of bit lines connected separately to the plurality of MOS memory cells; and a plurality of intermediate state detecting circuits connected separately to the plurality of bit lines for detecting an intermediate state other than writing and erasing states of the MOS memory cells, and for outputting an error bit indicating signal, the intermediate state being a threshold voltage between a threshold voltage of a storage MOS memory cell in a writing state included in each of the MOS memory cells and a threshold voltage of the storage MOS memory cell in an erasing state.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile