| 摘要 |
PURPOSE:To avoid the erroneous control of another unexpected radio call receiver by performing the double collation based on the collation information included in a special message received by a radio call receiver and the decision of the presence or absence of a transmission error. CONSTITUTION:When a radio call signal is received, a CPU 4 collates the radio call number included in the leading of a reception signal with its own address which is being held in a ROM/RAM 5 and commands a decoding part 3 to decode a subsequent message when they coincide. Further, the CPU 4 decides whether the subsequent message exists and it is decoded without including a code error which is impossible to be corrected or not. If the result is positive, the specified pattern included in the leading slot of the message and the first password information which is being held in the ROM/RAM 5 are collated. Next, the second password information which is being held in the ROM/RAM 5 is collated. Further, the CPU 4 decides the coincidence of the collation also for a checksum signal and executes the special control designated by a special control command. |
