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. 10, 2013
Filed:
May. 15, 2007
Masaru Fukushima, Kanagawa, JP;
Shuichi Sugie, Tokyo, JP;
Shinsaku Kiyomoto, Saitama, JP;
Tatsuo Shibata, Tokyo, JP;
Keigo Majima, Tokyo, JP;
Takeshi Kimura, Tokyo, JP;
Hideki Kokubun, Tokyo, JP;
Go Ohtake, Tokyo, JP;
Masaru Fukushima, Kanagawa, JP;
Shuichi Sugie, Tokyo, JP;
Shinsaku Kiyomoto, Saitama, JP;
Tatsuo Shibata, Tokyo, JP;
Keigo Majima, Tokyo, JP;
Takeshi Kimura, Tokyo, JP;
Hideki Kokubun, Tokyo, JP;
Go Ohtake, Tokyo, JP;
Abstract
Provided is a system far receiving a initialization packet containing an initial vector for initializing stream encryption algorithm and an identifier of a key for decrypting an encrypted stream, initializing a decryption module, and decrypting the encrypted stream, wherein the system stores an identifier of a key which is needed to decrypt a next program in a initialization packet of a current program and informs a user of whether a desired key has been acquired or not at timing close to start time of the next program.