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:
Jul. 07, 1987
Filed:
Feb. 26, 1985
Jun-ichi Tsujimoto, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A memory matrix array consists of a plurality of memory cells with addresses expressed by a plurality of bits. The parity bit for the data stored in all of the memory cells of each linear memory cell array in the row direction are stored in the corresponding one of a plurality of parity storage cells. Storage is made into second and third parity storage cells, respectively, the parity bits for the data stored in all of the memory cells which are specified such that the corresponding bits of the addresses of the memory cells in the memory matrix array are high in logical level. In a read mode, the parity is read out from the first to third parity storage cells of the parity memory circuit.