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. 08, 2011
Filed:
Apr. 19, 2004
Hiroshi Yamaguchi, Chiba, JP;
Ichiro Hamada, Kanagawa, JP;
Hiroshi Yamaguchi, Chiba, JP;
Ichiro Hamada, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
The invention relates to properly protecting broadcast contents stored on a receiver side from copying without permission and illegal use in server type broadcasting. According to the invention, contents are sent from a broadcast sending side in a state in which copyright information for the contents is added to the contents. On the other hand, on a receiving client side applicable to server type digital broadcasting, it is possible to perform appropriate control for reproduction of contents and recording reservation on the basis of copyright information for contents such as the number of times of reproduction of contents, restriction of display resolution at the time of reproduction of contents, and an expiration date of content reproduction. According to this copyright information, it is possible to perform detailed control for a display device incorporated in or connected to a receiver.