Fujitsu Corporation

Haruo Mukai

Yuji Kato

Shunji Abe

Toshio Soumiya

Michio Kusayanagi

Jyoei Kamoi

Toshio Shimoe

Hichiro Hayami

Takeshi Kawasaki

Ryo Kajiyama

Tomihiro Yamazaki

Hidemi Okada

A first reading unit reads data stored in a second storage area of a storage medium (including reproduction management information), and stores it in another storage medium. A first reproducing unit reproduces the data read from a first storage area of a storage medium by the first reading unit. A second reading unit reads data stored by the first reading unit in another storage medium, and outputs it to a second reproducing unit. The second reproducing unit reproduces data received from the second reading unit. A controlling unit synchronizes the reproduction of the data by the first reproducing unit with the reproduction of the data by the second reproducing unit.

Storage medium playback system and method

An object of the present invention is to keep the scale of the connectionless function at the minimum and plan the expansion of the network scale and the ability expansion of the exchange in connectionless communication. In order to attain the object, the present invention comprise a destination address detection step for detecting a destination address from a message, a main retrieval step for detecting a routing information corresponding to the destination address from the first register in which only the routing information corresponding to the prescribed number of destination address is registered, a sub-retrieval step for detecting the routing information corresponding to the destination address from the second register in which the routing information corresponding to the all destination address supported by the change is registered, when the routing information corresponding to the destination address is not registered in the first register, and a routing information notification step for notifying the routing information to the exchange, in order to attain the above-mentioned object.

Method and device for transferring messages in connectionless

A call admission control system in an asynchronous transfer mode exchange includes a unit for describing attribute parameters of a cell from the subscriber terminal; a unit for calculating, based on the attribute parameters, the average and the dispersion of the traffic speeds of the call; a unit for managing data of the average and the dispersion on each output route and data relating to each subscriber; and a unit for calculating the total average and the total dispersion of the data speeds on the selection output route; and a unit for calculating prediction values of cell abandon rate and end-to-end delay based on the average and the dispersion on the selected output route calculated by the total average and dispersion calculating unit, and for comparing the prediction values with the required service quality of cell discard rate and end-to end delay, for determining whether or not the requesting call may be connected.

Traffic control system for asynchronous transfer mode exchange

A call admission control system in an asynchronous transfer mode exchange includes a unit for describing attribute parameters of a call from the subscriber terminal; a unit for calculating, based on the attribute parameters, the average and the dispersion of the traffic speeds of the call; a unit for managing data of the average and the dispersion on each output route and data relating to each subscriber; and a unit for calculating the total average and the total dispersion of the data speeds on the selected output route; and a unit for calculating prediction values of cell abandon rate and end-to-end delay based on the average and the dispersion on the selected output route calculated by the total average and dispersion calculating unit, and for comparing the prediction values with the required service quality of cell discard rate and end-to-end delay, for determining whether or not the requesting call may be connected.

Growing community of inventors

Kawasaki, Japan

Haruo Mukai