BRIDGE AND IEEE 1394 BRIDGE

摘要

PROBLEM TO BE SOLVED: To transfer a packet sent from a terminal device to a different bus while enhancing the utilizing efficiency of a bus resource in a serial network. SOLUTION: Initialization of local buses 14a-14n, definition of topology and management of an isochronous resource are conducted for each local bus. Portals 12a-12n use an asynchronous packet discrimination section 215 to discriminate an asynchronous packet sent from a terminal and transfers the asynchronous packet. Furthermore, the portals 12a-12n discriminate the asynchronous packet sent by the terminal to acquire the isochronous resource and reserve the isochronous resource on a different bus. The portals 12a-12n transfer the isochronous packet to a different local bus by relating the received isochronous packet to a plug of a bridge bus side and a plug at the local bus side to an isochronous channel on the bus.