Ntt Docomo, Inc.

Takashi Kadohiro

Seiji Hoshi

Makoto Ito

Yasutaka Urakawa

Tadao Takami

Motoyuki Uchida

Hiroaki Tomoda

Koichi Moriyama

The method of the present invention is an update method of a software which is stored in a rewritable non-volatile memory of a communication terminal and is directly executed. The method comprises: an update file transfer step in which an update software is transferred to the communication terminal from a software management server for managing the update software which is to be stored in the rewritable non-volatile memory as an update file, and the update file is stored in a rewritable volatile memory of the communication terminal; and an update software rewriting step in which the software, which is stored in the rewritable non-volatile memory and is directly executed, is rewritten with the update software stored in the rewritable volatile memory as the update file after the update file transfer step.

Communication terminal software updating method, communication terminal, and software updating method

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.

Mobile communication terminal, information processing method, data processing program, and recording medium

An information communication systemaccording to the present invention is comprised of a cellular phonehaving a data storage, a data list transmitter, and a data transmitterand a cellular phonehaving a check list DBand a data receiver. The cellular phonemakes the data list transmittertransmit a data list of content data stored in the data storage, to the cellular phone. The cellular phonecollates the data list with a check list stored in the check list DBto generate a request list, and transmits the request list to the cellular phone. The cellular phoneextracts the content data recorded in the received request list from the data storageand transmits the content data to the cellular phone. The cellular phonereceives the content data through the data receiver

Transmission-side mobile unit, reception-side mobile unit, information communication system, information communication method, and server apparatus

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Kanagawa, Japan

Takashi Kadohiro