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:
Apr. 08, 2008
Filed:
Nov. 12, 2002
Yusei Nishimoto, Tokyo, JP;
Tatsuya Kurioka, Tokyo, JP;
Toshihiro Uehara, Tokyo, JP;
Seiichi Namba, Tokyo, JP;
Haruo Okuda, Tokyo, JP;
Yusei Nishimoto, Tokyo, JP;
Tatsuya Kurioka, Tokyo, JP;
Toshihiro Uehara, Tokyo, JP;
Seiichi Namba, Tokyo, JP;
Haruo Okuda, Tokyo, JP;
Nippon Hoso Kyokai, Tokyo, JP;
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.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile