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:
Jan. 11, 1994
Filed:
May. 20, 1991
Masaru Uesugi, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A semiconductor memory circuit in which data are stored in dynamic type memory cells located at cross-points of bit and word lines, and are refreshed within a predetermined time by a sense amplifier so as to hold the thus stored data includes a first bit line connected to a first sense node of the sense amplifier. A second bit line is connected to a second sense node of the sense amplifier. A first switching circuit having a first terminal is disposed between the first bit line and the first sense node, for coupling the first bit line with the first sense node in response to a first control signal applied to the first terminal. A second switching circuit having a second terminal is disposed between the second bit line and the second sense node, for coupling the second bit line with the second sense node in response to a second control signal applied to the second terminal. A first control line is coupled to the first terminal and isolated from the second switching circuit and the second bit line, for providing the first control signal. A second control line is coupled to the second terminal and isolated from the first switching circuit and the first bit line, for providing the second control signal.