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摘要

PROBLEM TO BE SOLVED: To obtain a control system for an extended array by transmitting a read request packet to a node identified by a self-identification packet, extracting one or a plurality of identifiers including a node unique identifier from a received read acknowledgement packet including the node unique identifier and inserting a plurality of identifiers to and additional field.;SOLUTION: A physical topology in a cable environment 212 is a network that has finite branches and range. Each IEEE 1394 cable 220 interconnects ports 208 on different nodes 104. Each port 208 usually includes a terminator, a transceiver and an arbitration logic circuit. The cable 220 and the ports 208 act as a cable repeater that relays a signal locally generated thereat to an adjacent node 104. The nodes 104 under the cable environment 212 can simulate a signal logic bus through this relay function.;COPYRIGHT: (C)2001,JPO