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:
Jun. 10, 1997
Filed:
May. 17, 1996
Noboru Akiyama, Hitachinaka, JP;
Seigoh Yukutake, Kodaira, JP;
Sadayuki Ohkuma, Oume, JP;
Akihiko Emori, Hitachi, JP;
Takashi Akioka, Akishima, JP;
Shuichi Miyaoka, Hannou, JP;
Shinji Nakazato, Maebashi, JP;
Kinya Mitsumoto, Tamamura, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A memory device comprising a memory array having a plurality of bits, including parity bits, and comprising a plurality of memory blocks, and a bit structure changing section for changing the input/output bits of the memory array, wherein the number of the memory blocks are prescribed to be an integral multiple of three and the input/output bits of the plurality of memory blocks are even. Thereby, the bit structure of the semiconductor memory, having parity bits and which is capable of changing the input/output bits to a plurality of bit structures, can be changed while maintaining the bit structure of the memory blocks even and without increase in propagation delay time.