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. 15, 1994
Filed:
Nov. 19, 1991
Applicant:
Inventor:
Hideshi Miyatake, Itami, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365182 ; 365207 ; 365208 ;
Abstract
A memory circuit incorporating a current-mirror type amplifier which directly amplifies a varied potential of a pair of bit lines. As soon as the word line goes High, the current-mirror type amplifier is simultaneously activated to amplify a minimal difference (100 mV) of potential between these bit lines. Data signal outputted from the current-mirror type amplifier is then transmitted to a read-only signal line. As a result, data is quickly read out before a built-in sense amplifier completes amplification, thus quickly achieving an accessing operation at extremely fast speed.