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. 12, 2000
Filed:
May. 19, 1999
Masaki Uekubo, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a semiconductor storage device including a differential circuit which compares a voltage outputted by a memory cell array 103 with a voltage outputted by a reference circuit 106, a constant current source circuit 109 is connected to the differential circuit 201 in parallel with the memory cell array 103 and outputs a signal for monitoring the threshold voltage of the reference circuit 106. A controller circuit 108 is changed over from an output signal of the memory cell array 103 to that of the current source circuit 109 on monitoring the reference circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile