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:
Mar. 16, 2010
Filed:
Feb. 07, 2003
Motoyuki Uchida, Kanagawa, JP;
Tadao Takami, Kanagawa, JP;
Yasutaka Urakawa, Kanagawa, JP;
Takashi Kadohiro, Kanagawa, JP;
Hiroaki Tomoda, Kanagawa, JP;
Seiji Hoshi, Kanagawa, JP;
Makoto Ito, Kanagawa, JP;
Motoyuki Uchida, Kanagawa, JP;
Tadao Takami, Kanagawa, JP;
Yasutaka Urakawa, Kanagawa, JP;
Takashi Kadohiro, Kanagawa, JP;
Hiroaki Tomoda, Kanagawa, JP;
Seiji Hoshi, Kanagawa, JP;
Makoto Ito, Kanagawa, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A transmitter cell phoneis provided with a controllerfor fulfilling functions of a data encryptor, a first key encryptor, and an encryption file generator. The data encryptor encrypts data, using a first encryption key. The first key encryptor encrypts the first encryption key, using a second encryption key. The encryption file generator generates an encryption file of the data from the data encrypted by the data encryptor, the first encryption key encrypted by the first key encryptor, and user-specific information permitting identification of a user of the mobile communication terminal.