Communication method and communication system

摘要

In order to reduce the transmission bandwidth of a bus, a communication system is provided in which plural devices (101 to 10n) are connected to one another by the bus (21), the first device (101) performs inquiries to the other devices (102 to 10n), and the result of the inquiries is transmitted to the other devices (102 to 10n), thereby allowing the other devices (102 to 10n) to recognize one another. A device which is newly connected to the system performs polling only once at the time of connection. <IMAGE>