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. 24, 2008
Filed:
Jul. 14, 2005
Takayuki Tamura, Higashiyamato, JP;
Hirofumi Shibuya, Tokyo, JP;
Hiroyuki Goto, Higashimurayama, JP;
Shigemasa Shiota, Tachikawa, JP;
Yasuhiro Nakamura, Tachikawa, JP;
Takayuki Tamura, Higashiyamato, JP;
Hirofumi Shibuya, Tokyo, JP;
Hiroyuki Goto, Higashimurayama, JP;
Shigemasa Shiota, Tachikawa, JP;
Yasuhiro Nakamura, Tachikawa, JP;
Renesas Technology Corp., Tokyo, JP;
Hitachi ULSI Systems Co., Ltd., Tokyo, JP;
Abstract
A memory card includes a non-volatile memory, a memory controller for controlling the operation of the memory card. The memory controller is capable of providing an interface with outside according to a predetermined protocol, and performs error detection and correction of the memory information at regular time intervals or at the timing of connection of electric power supply, independently of reading out the memory information according to external access request. Therefore, it is possible to improve reliability of data retention in the non-volatile memory without the host device reading out the memory information from the non-volatile memory of the memory card.