| 摘要 |
PROBLEM TO BE SOLVED: To easily and correctly input an identification number again, to automatically set the number and to improve the reliability of a system. SOLUTION: A character multiplex and data broadcasting decoder 107 gas a memory 43 storing specific identification numbers, and the decoder adds this identification number to data and transmits data when data is transmitted to a communication line network. A system controller 106 transfers the identification number stored in the memory 43 to the part of the memory 111 of a station selection circuit 105 and stores the number, when the power source of a system is turned on, for instance. Thus, the same identification numbers are stored in two portions and the contents of either one of the memories is erased, the identification number of the other memory is automatically written when the power source is turned on. |
