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:
Aug. 16, 2005
Filed:
Sep. 01, 1999
Toshiya Takahashi, Ibaraki, JP;
Toshiya Takahashi, Ibaraki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Selective encryption for object data such that objects having copyrights to-be-protected are encrypted. There are provided a plurality of data compression devices for compressing respective object data respectively corresponding to a plurality of objects which compose a scene, a multiplexor for multiplexing scene description data and compressed object data to produce a multiplexed bit stream MB, a scrambler for encrypting (scrambling) individual streams corresponding to the objects having copyrights to-be-protected in the multiplexed bit stream MB, to produce an encrypted bit stream SB, for outputting the encrypted bit stream SB to a data storage medium or a data transmission medium.