Claims
- 1. A communication control device for an information transmission system in which a plurality of communication control devices are used, comprising:
- a first storage means for storing all of a plurality of candidate values which are adoptable as a self-address of said communication control device;
- a process means for selecting one of said candidate values which is unused by another device in the system as the self-address of said communication control device; and
- a second storage means for initially storing an initial value to indicate that the self-address of said communication control device has not been selected, and for subsequently storing the selected candidate value,
- wherein said process means comprises:
- a judgment means for judging whether said initial value is stored in said second storage means;
- a transmission means for sending to said information transmission system at least one signal in which each of said candidate values is set to a destination address in accordance with a pre-ordered sequence, one candidate value at a time, when said judgment means judges that said initial value is stored in said second storage means; and
- a decision means for selecting a candidate value to be the self-address of said communication control device, if no response is obtained from said information transmission system.
- 2. A communication control device according to claim 1 wherein said control device is connected with a terminal device of a particular type and said candidate values are selected in accordance with the particular type of said terminal device.
- 3. A communication control device according to claim 1 wherein said second storage means is a nonvolatile memory in which information is writable and readable.
Parent Case Info
This is a continuation of U.S. patent application Ser. No. 07/994,071, filed Dec. 21, 1992, now abandoned, which is a continuation of U.S. patent application Ser. No. 07/408,644, filed Sep. 18, 1989, now abandoned.
US Referenced Citations (8)
Continuations (2)
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Number |
Date |
Country |
Parent |
994071 |
Dec 1992 |
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Parent |
408644 |
Sep 1989 |
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