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:
Mar. 13, 2007
Filed:
Jun. 12, 2002
Miki Abe, Kanagawa, JP;
Takafumi Hosoi, Tokyo, JP;
Hiromi Matsuda, Kanagawa, JP;
Masao Tanaka, Kanagawa, JP;
Miki Abe, Kanagawa, JP;
Takafumi Hosoi, Tokyo, JP;
Hiromi Matsuda, Kanagawa, JP;
Masao Tanaka, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Disclosed is a method for causing either encrypted first content data or unencrypted second content data, to be selectively recorded to a storage medium in a data recording apparatus. When the data recording apparatus is to return the encrypted first content data to the data transfer apparatus, the return is inhibited if the data are judged to have been edited. Upon return of the encrypted first content data, a content ID held by the data recording apparatus regarding the first content data is matched against a content ID held by the data transfer apparatus regarding the received data. Where the encrypted first content data are known to have been edited, the content ID matching process is omitted.