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Slave device and communication setting method

  • US 20060109349A1
  • Filed: 06/23/2004
  • Published: 05/25/2006
  • Est. Priority Date: 06/27/2003
  • Status: Active Grant
First Claim
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1. A slave apparatus capable of communicating with a master device through a predetermined communication bus and having a plurality of communication modes of diverse kinds, said slave apparatus comprising:

  • judging means of transmitting to said master device a notification code of notifying a presently set-up communication mode, and then judging whether a command in response to said notification code is received from said master device within a predetermined time or not; and

    communication controlling means of performing control on the basis of a judgment result of said judging means in such a manner that when a command in response to said notification code is received from said master device within the predetermined time, a state permitting communication with said master device is established in correspondence to the command, and that when said command is not received within said predetermined time, connection to said master device is electrically released temporarily and then said connection is restored;

    wherein by the time when said slave apparatus and said master device resume communication as a result of said restoration of connection, said communication controlling means selects one from a plurality of said communication modes so that its own communication mode is changed into one different from that used immediately before said release.

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