Patent ID: 7436288

Claim:
A remote control equipment comprising: a line filter for preventing frequency signal data from being leaked to the outside through a power line; a transmitting end including: a) a power supply section including a rectifier for converting an input AC voltage into a DC voltage and a constant voltage section for stabilizing the DC voltage output from the rectifier; b) an oscillator/amplifier for performing an oscillation and an amplification by the voltage supplied from the constant voltage section to output a clock signal; c) a frequency divider for receiving the clock signal of the oscillator/amplifier and outputting a plurality of frequency-divided signals; d) a remote control keyboard for performing a selection operation through a plurality of key switches so as to provide the output signal from the frequency divider, as a controller signal, to an amplifying circuit of the oscillator/amplifier; e) a remote-control signal controller for controlling a remote control signal externally selected; f) a telephone signal controller for performing a control operation through a telephone line from the outside; g) a synchronous frequency-transmitter for transmitting selected frequency signal data to a power line or a dedicated line; and h) a light emitting section which is turned on in response to an input of a feedback signal generated as a light emitting section of a receiving end is turned on; and the receiving end including: i) a synchronous frequency-detector for detecting predetermined frequency signal data among a plurality of frequency-divided signals received by the power or dedicated line; j) a signal latch section for receiving the synchronously-detected signal output from the synchronous frequency-detector and generating a signal-latch toggle output-level; k) a relay driver for controlling a relay used for switching on a load; l) a detector for detecting and transmitting the operating state of the load as the load is switched on; and m) the light emitting section which is turned on as the load is switched on, wherein the remote control signal controller includes: an optical receiver for receiving an optical signal from a remote controller and a signal converter for detecting a wavelength of the optical signal received by the optical receiver and determining the kind of a load coincident with a frequency corresponding to the detected wavelength so as to generate frequency signal data.