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:
Sep. 18, 1979
Filed:
Apr. 11, 1977
Applicant:
Inventors:
Shigeru Yoshizawa, Tokorozawa, JP;
Nobuo Saito, Mitaka, JP;
Assignees:
Hitachi, Ltd., BOTH OF, JP;
Nippon Telegraph and Telephone Public Corporation, BOTH OF, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365 15 ;
Abstract
In a shift register type memory device wherein a plurality of chips are connected to a single sense amplifier and wherein data to be stored is cyclically written into the chips, then when a predetermined loop within a chip for stored designated data is defective, the data is not stored in a loop within the chip adjacent to the defective loop, but is stored in a loop to be subsequently read out in a chip to be read out subsequently to the chip having the defective loop.