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:
Oct. 25, 1994
Filed:
Oct. 29, 1992
Applicant:
Inventors:
Kenji Fujita, Odawara, JP;
Toshiyuki Nakao, Hadano, JP;
Hirotsugu Yamagata, Odawara, JP;
Nobuyuki Saze, Odawara, JP;
Assignee:
Hitachi Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365229 ; 365226 ; 365228 ; 365200 ; 371 66 ;
Abstract
A semiconductor storage including a main flash memory, a volatile write cache, a data control circuit, an alternate flash memory and a power supply. This arrangement permits the use of a smaller write cache in comparison with the use of a non-volatile memory, and also provides decreased capacity of the write cache, permitting high-speed access and long-life.