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:
Apr. 04, 1995
Filed:
Sep. 16, 1993
Applicant:
Inventor:
Kimimasa Imai, Kawasaki, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36523003 ; 365200 ; 371 491 ; 371 493 ;
Abstract
The parity cell arrays are placed between the ordinary cell arrays and a second peripheral circuit. Data signal lines are provided between the ordinary cell arrays, between the ordinary cell arrays and the parity cell arrays, and between the parity cell arrays. These data signal lines are connected to read-write lines via data signal-line amplifier circuits. These data column-line amplifier circuits have almost the same construction. The data signal-line control circuit activates the data signal-line amplifier circuits during a write and a read operation to enable data transfer between the data signal lines and the read-write lines.