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:
Sep. 18, 2012
Filed:
Jun. 15, 2005
Tatsuya Inokuchi, Tokyo, JP;
Tsutomu Ichinose, Tochigi, JP;
Tatsuya Inokuchi, Tokyo, JP;
Tsutomu Ichinose, Tochigi, JP;
Sony Corporation, Tokyo, JP;
Abstract
An information management method for managing whether to allow playback of copyrighted content includes an invalidating step, executed by playback management means when an invalidating request for content recorded on a recording medium is received, of registering the content in playback-management information as being in a playback-prohibition state; a playback processing step, executed by playback controlling means when a playback request for content on the recording medium is received, of permitting playback only when the content is not in the playback-prohibition state with reference to the playback-management information; and an invalidation canceling step, executed by the playback controlling means when playback-permission information associated with content in the playback-prohibition state is obtained, of updating the playback-management information so that the playback-prohibition state of the content is canceled.