Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Haruo Okuda0
Tatsuya Kurioka0
Toshihiro Uehara0
Yusei Nishimoto0
Seiichi Namba0
Date of Patent
April 8, 2008
0Patent Application Number
103987020
Date Filed
November 12, 2002
0Patent Primary Examiner
Patent abstract
A method of transmitting a content to a reception side includes the steps of encrypting the content by use of a scramble key that varies with time, encrypting scramble-key-associated information that includes at least the scramble key and usage-control information, the usage-control information indicative of usage of the content on the reception side, and transmitting the encrypted content and the encrypted scramble-key-associated information to the reception side.
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