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. 14, 2011
Filed:
Jun. 19, 2003
Takumi Okaue, Tokyo, JP;
Kenich Nakanishi, Tokyo, JP;
Jun Tashiro, Tokyo, JP;
Hideaki Okubo, Tokyo, JP;
Takumi Okaue, Tokyo, JP;
Kenich Nakanishi, Tokyo, JP;
Jun Tashiro, Tokyo, JP;
Hideaki Okubo, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A device and method is provided for maintaining, upon unlocking of a memory, the lock status of the memory prior to the memory being unlocked and recreating the lock status when power is turned on again. An information storage device, such as a memory card, performs unlocking of a memory in response to a command input from an information processing apparatus and stores lock status data prior to the memory being unlocked in a non-volatile memory (NVM). When the information storage device is turned off and then on, the information storage device recreates a lock status of the memory on the basis of the lock status data stored in the storage means and performs memory access control based on the recreated lock status.