Patent ID: 7129816

Claim:
A remote control system comprising: a transmitter including enciphering means for enciphering a predetermined code through the use of a specific key code peculiar to each system, said transmitter transmitting the enciphered code produced by said enciphering means; and a receiver including deciphering means for receiving the enciphered code to decipher the enciphered code through the use of said specific key code, said receiver outputting an instruction for activating a controlled object when the deciphered code from said deciphering means satisfies a predetermined relationship, said transmitter and said receiver being configured so that, when said specific key code to be used in said deciphering means is transmitted from said transmitter to said receiver and registered therein, said enciphering means enciphers said specific key code through the use of a default key code stored in said transmitter and said receiver, and said transmitter transmits the enciphered specific key code to said receiver.