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:
Nov. 23, 2004
Filed:
Feb. 14, 2003
Takafumi Maruyama, Osaka, JP;
Makoto Kojima, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a dynamic sensing-type nonvolatile semiconductor memory device of the invention, which employs a differential sense amplifier circuit, a memory cell is connected to a bit line using a word line and a reference memory cell is connected to an anti-bit line using a reference word line, the potential difference between the bit line and the anti-bit line is amplified by a sense amplifier, and when reading the data of the memory cell, at the start of data readout the bit lines are both precharged to a predetermined potential by a precharge circuit, and during and after precharging or only after precharging is finished, an identical amount of current is supplied to the bit line and the anti-bit line by a bit line current supply circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile