Fujitsu Corporation

Yukihiro Noda

Shinichiro Aikawa

Mamoru Higuchi

Yuichiro Hamano

Yoshiko Koizumi

Yoko Shimominami

Ritsuo Hayashi

Hiroyuki Fujita

Nobuharu Masuyama

Masashi Sakai

A mobile unit transmits a request for position registration to a network when moving from a first area to a second area. When the number of incoming calls does not exceed a threshold and the number of movements between the first area and the second area exceeds a threshold, a mobile switchboard combines the first area and the second area into an extended area, and informs the mobile unit of the extended area.

Mobile switchboard, mobile unit, mobile communication system, and position-registration extending method

A communication method enabling communication on a predetermined mobile communication network and communication on a predetermined wireless communication network different from the predetermined mobile communication network, includes the step of: switching, means for carrying out predetermined data transfer while maintaining a communication channel on the predetermined mobile communication network, between communication on the predetermined mobile communication network and communication on the predetermined wireless communication network, or activating or deactivating a part concerning the predetermined wireless communication included in a mobile terminal.

Communication method, communication apparatus and communication system

Personal computer

In a communication system in which a plurality of processing apparatuses are communicably connected to one another over a network, a processing apparatuses has an update request issuing unit issuing an update request containing address information to be updated in order to update an address book and an address book updating unit updating the address book on the basis of a response result to the update request, a determining unit determines whether or not the address information contained in the update request is valid when receiving the update request from the processing apparatus, and a response result transmitting unit transmits a result of determination made by the determining unit to the processing apparatus as the response result to the update request. The address book of the processing apparatus retaining the address information about other processing apparatuses can be updated to the latest state, with certainty.

Address information managing system, management apparatus, processing apparatus and address book updating method

A data communication system and data communication method capable of drastically improving the quality of a dynamic image service to be offered to a user. The data communication system comprises a mobile communication terminal (-), an application server (-) for fetching data open to the public on a network (-) in accordance with a request from the mobile communication terminal (-) and conducting a data rate conversion for delivery to the mobile communication terminal (-) and conducting data delivery and transferring the fetched data to a predetermined transferred destination, and a home server (-) provided in a base of a possessor of the mobile communication terminal (-) for receiving the data, fetched by the application server (-) and transferred, through the network (-) and accumulating the data to regenerate the data as needed.

Data communication system and data communication method

Growing community of inventors

Kawasaki, Japan

Yukihiro Noda