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:
May. 11, 2010
Filed:
Sep. 17, 2003
Kazuo Omori, Tokyo, JP;
Akira Honjo, Tokyo, JP;
Masahiro Sueyoshi, Kanagawa, JP;
Naofumi Hanaki, Kanagawa, JP;
Kei Tateno, Tokyo, JP;
Kazuo Omori, Tokyo, JP;
Akira Honjo, Tokyo, JP;
Masahiro Sueyoshi, Kanagawa, JP;
Naofumi Hanaki, Kanagawa, JP;
Kei Tateno, Tokyo, JP;
Sony Corporation, , JP;
Abstract
Mutual authentication is performed by using first and second authentication key data between a first data processing device and a second data processing device. When the mutual authentication is succeeded, the first data processing device uses encryption key data for encrypting predetermined data and outputs the data to the second data processing device. The second data processing device decrypts the encrypted data by using decryption key data and judges whether the data is adequate or not for making the data to effective.