Other

Osamu Tomioka

Mitsukazu Kurose

Shoji Akashita

Kunihiro Hanaoka

Provided is a signal processing apparatus including upper, intermediate and lower layer processing sections. The lower layer processing section includes a first storage unit having a first memory capacity of a limited size for transfer data. The intermediate layer processing section includes a second storage unit having a second memory capacity larger than the limited size. The upper layer processing section transmits the transfer data of a size, larger than the first memory capacity and not larger than the second memory capacity, to the intermediate layer processing section. The intermediate layer processing section receives the transfer data, divides the data into plural divided data each having a size not larger than the limited size, and transmits the data to the lower layer processing section. Being untransmitted divided data, the intermediate layer processing section transmits this data to the lower layer processing section without transmitting any response signal.

Signal processing apparatus with three layer processing sections, and signal processing system with said two signal processing apparatuses

A packet communication apparatus is provided for transmitting a packet with a label for distinguishing each packet to each destination apparatus, and receiving a response packet with the same label transmitted from each destination apparatus. A plurality of application units respectively provide a plurality of functions which are independent of each other, and each application unit requests for issuing a label in accordance with start of a process of the function, and returns the issued label upon completion of the same process of the function. One common memory is provided in common for a plurality of application units, and stores a plurality of labels added to a header of each packet to distinguish a plurality of packets whose destination apparatus is identical. Further, a label manager allows and inhibits use of respective labels stored in the common memory, and issues the labels stored in the common memory in accordance with a request for issuing the labels so that labels attached to all packets transmitted to the same destination apparatus are different from each other by inhibiting use of the labels which has been already allowed for a sequence of communication until completion of the sequence of communication.

Packet communication apparatus provided with manager means for managing packet labels

A communication apparatus is provided for communicating with further communication apparatuses which are connected with the communication apparatus, and for allowing one of a plurality of function units to execute a predetermined process in accordance with a request signal from a further apparatus. In the case where one of the further communication apparatuses is permitted to communicate with the communication apparatus, when a request signal of start of communication is sent from another one of the further communication apparatuses different from the one of the further communication apparatuses which has been already permitted to communicate with the communication apparatus, a manager unit returns response information including the designation information stored in the memory to another one of the further communication apparatuses so as to permit another one of the further communication apparatuses to communicate with. the communication apparatus, and then, allocates to another one of the further communication apparatuses virtual alternate designation information, which is different from the virtual alternate designation information allocated to the one of the further communication apparatuses which has been already permitted to communicate with the communication apparatus.

Communication apparatus with means for allocating alternate designation information to each function unit, and communication system with said two communication apparatuses

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Shinagawa-ku, Japan

Osamu Tomioka