| 摘要 |
PURPOSE:To shorten the time necessary for data transfer and to execute the secure remote control by transferring satisfactorily data of a transmission reference signal of a device operated by remote control with the aid of a device for operating by remote control at the time when receiving of data is possible. CONSTITUTION:A crane truck 2 produces a reference signal from a code generator circuit 2a, inputs it to a transmission part 2b and transmits it through an antenna 2c. A remote controller 1 receives the signal at a receiving part 1d through an antenna 1c, and inputs it to a decoder circuit 1e. An output of the circuit 1e is inputted to a decision circuit 2. When the output has the prescribed waveform and level, a signal for showing that remote control is possible is outputted, whereby a display part 1g lights up so as to display the possibility. Then data inputted to a transmission part 1b is transmitted, received by a receiving part 2d through the antenna 2c of the crane truck 2, and transferred to a controller 2e. Finally the remote control is executed. |
