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:
Aug. 05, 2008
Filed:
Jan. 30, 2007
Katsuhiko Hoya, Yokohama, JP;
Shinichiro Shiratake, Yokohama, JP;
Katsuhiko Hoya, Yokohama, JP;
Shinichiro Shiratake, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor memory comprising a memory cell array, a spare memory cell array, a spare data replacing circuit, a syndrome computing circuit, and an ECC circuit is disclosed. The data in the memory cell replaced with a memory cell in the spare memory cell array is set to 0 and then the syndromes of the data read from the memory cell array are calculated. In parallel with the syndrome calculation, the data in the memory cell of the memory cell array is replaced with the data read from a spare memory cell. Then, the syndromes of the data read from the memory cell in the spare memory cell array are calculated. The calculated syndromes and the output of the spare data replacing circuit are supplied to the ECC circuit, which corrects the error if there is a 1-bit error in the data read from the memory cell array.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile