REMOTE CONTROLLER WITH CRYPTOGRAPHIC REGISTRATION FUNCTION

PURPOSE:To obtain a remote controller with cryptographic registration function by providing a cryptographic registration function to both the transmitter and receiver and providing a reception monitor means outputting an alarm output to the receiver if the cryptographic code is not coincident within a specific time and number of times. CONSTITUTION:The content of input of a cryptographic code through the operation of each input switch group 5a is converted into a code signal by a cryptographic input section 4 in a transmitter 1 and a receiver 2 and displayed on a display section 6. When the memory switch 5c is depressed, the set cryptographic code is stored in a cryptographic code storage section 3. When the cryptographic code output section 7 of the transmitter 1 reads the code stored in the storage section 3 by depressing the transmission switch 7s and the code is sent to a transmission output section 10 via a modulation circuit 8 and a transmission circuit 9. The signal is sent to a cryptographic code collation section 14 through the reception circuit 12 and a demodulation circuit 13 of the receiver 2 and compared with the signal stored in the storage section 3. When the cryptographic code is dissident within a prescribed monitor time, an alarm signal A1 is outputted from a monitor circuit 17. Thus, the remote control with cryptographic registration function is obtained.