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. 27, 2005
Filed:
Nov. 05, 2003
Yukihiro Nishida, Yokohama, JP;
Kiyoharu Oikawa, Kawasaki, JP;
Yukihiro Nishida, Yokohama, JP;
Kiyoharu Oikawa, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A memory circuit device comprising a plurality of memory cells connected to a plurality of bit lines and word lines, an access circuit connected to the plurality of bit lines and word lines to select predetermined memory cells from the plurality of memory cells in response to an address signal, a precharge circuit which precharges the bit lines connected to the memory cells selected by the access circuit at the time of a read mode, a common source line connected to a plurality of selected memory cells selected by the access circuit, a source line potential control circuit to connect the common source line to a ground node at a predetermined timing, and a discharge circuit which discharges the bit lines connected to non-selected memory cells other than the selected memory cells.