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:
Jun. 02, 2015
Filed:
Apr. 12, 2013
Sony Corporation, Tokyo, JP;
Tomoyuki Asano, Kanagawa, JP;
Yoshitomo Osawa, Kanagawa, JP;
Teruyoshi Komuro, Kanagawa, JP;
Ryuji Ishiguro, Tokyo, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
A cipher key is generated by first information shared in secrete between a data transmitting unitand a data receiving unit, second information derived from duplication control information of transmit data and third information which is time change information shared between the data transmitting unit and the data receiving unit to cipher data by a CPUby using the above-mentioned cipher key to transmit, from the data transmitting unitto the data receiving unit, transmit data in which the duplication control information and the time change information are added to the ciphered data.