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. 09, 2013
Filed:
Jun. 15, 2009
Yuichi Futa, Osaka, JP;
Tomoyuki Haga, Nara, JP;
Takayuki Ito, Osaka, JP;
Hideki Matsushima, Osaka, JP;
Yoshikatsu Ito, Osaka, JP;
Yuichi Futa, Osaka, JP;
Tomoyuki Haga, Nara, JP;
Takayuki Ito, Osaka, JP;
Hideki Matsushima, Osaka, JP;
Yoshikatsu Ito, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A data storage apparatus is provided that realizes a measure against deterioration of a flash memory in which integrity check data is stored. A content playback apparatus () uses a hash value of playback history information as integrity check data (confirmation data) for confirming whether the playback history information has been falsified. A first address calculation unit () and a second address calculation unit () determine a read-in address and a storage destination address for the integrity check data, with use of the hash value. Accordingly, the storage destination addresses can be diffused, thus enabling preventing deterioration of the flash memory.