Patent ID: 7974535
Filing Date: 2011-07-05
Classification: G08C

Abstract:
1. A remote control system comprising: a remote controller that remotely controls a main appliance; an infrared communication apparatus provided with the main appliance; a plurality of patterns having diffraction patterns different from each other, for producing diffraction light, the light intensity of which is different from each other in response to a change in incident angles of light to be illuminated are provided with the remote controller; a transmitting/receiving unit; a control unit; a light emitting unit that emits light to the pattern; a light receiving unit that receives reflection light reflected from the pattern; a detecting unit that detects a change in intensity of the diffraction light received by the light receiving unit; a calculating unit that binary-processes the detected light intensity to obtain binary information in response to the intensity of the light; and a converting unit that converts the binary information into a control signal for the main appliance, wherein: the transmitting/receiving unit and the control unit are provided with the infrared communication apparatus; the light emitting unit and the light receiving unit are provided with the transmitting/receiving unit; and the detecting unit, the calculating unit and the converting unit are provided with the control unit.