Patent ID: 6127940
Filing Date: 2000-10-03
Classification: G08C

Abstract:
A remote controlling apparatus utilizing infra-red energy comprising:a transmitter including:a gas discharge means for emitting an optical signal at a substantially infra-red wavelength or at a near infra-red wavelength with some visible wavelengths for monitoring purposes,a pulse generating circuit for activating the gas discharge means by ionizing a gas in the gas discharge means into a plasma state and modulating the plasma to output a plurality of optical pulses making up an encoded channel, each channel having at least one envelope of a selected pulse width and a selected pulse interval; anda receiver including:an envelope detection circuit for detecting the transmitted optical encoded channel and outputting a plurality of pulses each having the selected pulse width and selected pulse interval of the transmitted optical encoded channel,coincidence pulse generating means coupled to the output of the envelope detection circuit for determining whether the transmitted optical encoded channel coincides with a stored code, wherein the coincidence pulse generating means further provides an output activating a device attached to the receiver upon a determination of coincidence.