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:
Nov. 20, 2007
Filed:
Apr. 03, 2002
Hiroshi Sugimoto, Osaka, JP;
Hideshi Ishihara, Osaka, JP;
Takahiro Nagai, Osaka, JP;
Hirofumi Ide, Hyogo, JP;
Hiroshi Sugimoto, Osaka, JP;
Hideshi Ishihara, Osaka, JP;
Takahiro Nagai, Osaka, JP;
Hirofumi Ide, Hyogo, JP;
Matsushita Electric Industrial Co., Ltd., Kasoma, JP;
Abstract
A recording/reproducing apparatus includes: a first storage section for storing data structure information which includes encrypted data; a special information holding section for holding special information associated with the data structure information; and a controller for controlling the first storage section and the special information holding section. The data structure information is associated with the special information such that the special information is updated in response to an update of the data structure information, or such that the data structure information is updated in response to an update of the special information. The controller controls movement of the encrypted data from the first storage section to a second storage section, and the controller updates the special information such that a mismatch occurs between the special information obtained before the movement of the encrypted data and the special information obtained after the movement of the encrypted data.