Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Tadakatsu Masaki

Futoshi Nakabe

Shinji Kawano

Hiromi Ebara

Hideo Oozeki

Eiji Ueda

Yuka Matsushita

Ayaka Hamanaga

A wireless communications terminal prevents radio interferences caused by other wireless communications concurrent with a contactless communication. A wireless communications terminal receives, in a contactless communication, a command from a reader/writer via a second wireless communications section, and analyzes the received command. The wireless communications terminal controls a wireless communications control section to deactivate or temporarily deactivate the function of a first wireless communications section depending on the analysis of the command. After the function of the first wireless communications section is deactivated or temporarily deactivated, the wireless communications terminal accesses a memory area of an IC card microcomputer system as specified by the command to perform a contactless communication.

Wireless communications terminal, communications protocol switching method, communications protocol switching program, and integrated circuit of wireless communications terminal

The memory card with a simple configuration is provided with more reliable security. When the memory card receives the access request to the memory from the external connecting device, the access unit accesses the memory based on the access request. At this time, the switch composing the memory card indicates the propriety of the access right to the memory, and the access limitation unit limits that the access unit accesses the memory.

Memory card

A mobile terminal apparatus acquires resume information concerning an application which is being executed and identification information, which is selected by a user, related to the application. The identification information identifies a communications device communicating with the mobile terminal apparatus. A communication is performed with the communications device by using the identification information and whether the communication has been interrupted is determined. If it is determined that the communication has been interrupted, interruption information is generated including the identification information. The interruption information and the resume information concerning the application related to the interrupted communication are stored in association with each other. A history of interrupted communications is displayed based on the stored interruption information, and if the interrupted communication is instructed to be resumed, the communication is resumed based on the stored interruption information and the application is reactivated based on the resume information associated with the interruption information.

Mobile terminal apparatus capable of resuming an interrupted application

A contactless integrated circuit (IC) card for providing a high-grade random number with a simple configuration. A plurality of provisional random numbers are generated according to a part of calculations to be used for generation of a random number. The plurality of provisional random numbers generated are stored. A random number is generated on the basis of one of the provisional random numbers selected in sequential order.

Contactless IC card, responding method, and program therefor

This invention provides a reader/writer, ID method and program comprising a response-detection unit of detecting normal responses and collisions from IC cards in response to a request; and a response-invalidation unit of sending a response-invalidation command, which is a command not to respond to requests in the future, to IC cards that sent normal responses when the response-detection unit received normal responses from IC cards even though collisions were detected.

IC card reader/writer, identification method and program

The contactless IC card, the responding method, and the program that control the collision of response to the minimum, wherein the response judgment unit judges whether there is an initial response of the other contactless IC card at a specific time, and the response slot changing unit change the specific time based on the judgment result of the response judgment unit.

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Hiroshima, Japan

Tadakatsu Masaki