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:
May. 22, 1990
Filed:
Jun. 10, 1987
Applicant:
Inventors:
Hinoko Kurosawa, Hino, JP;
Kazuya Itoh, Kodaira, JP;
Hisashi Nakamura, Ohme, JP;
Masamichi Ishihara, Hinode, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 511 ;
Abstract
A semiconductor memory includes a memory array which outputs storage data, at least one data unit at a time, each data unit having a plurality of bits including a parity bit, a parity check circuit for performing a parity check on storage data, at least one data unit at a time, input for both to and output from the memory array, and an external terminal for outputting the result of the parity check.