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:
Mar. 23, 1999
Filed:
Jun. 19, 1998
Akihiko Hashiguchi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Feedback control is performed on the potential of a bit line in accordance with a change in the potential. Meanwhile, the data which has been previously read on the bit line is temporarily latched in a D-type flip-flop. A reference voltage Vref determined by a bias circuit is offset by using an offset circuit while referring to the level of the previously read data latched in the D-type flip-flop. In this manner, a bias voltage is obtained from currently read data, and based on the bias voltage, the potential of the bit line is controlled. Thus, high-speed data determining operation is achieved, which has been previously hampered when the currently read data is reversed with respect to the data read in the previous cycle.