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Remote control of appliances

  • US 4,301,542 A
  • Filed: 04/05/1979
  • Issued: 11/17/1981
  • Est. Priority Date: 07/22/1976
  • Status: Expired due to Term
First Claim
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1. A remote control system comprising one or more control apparatus for manually and automatically selecting at least one function and controlling or varying said function of one or more AC and DC electrical apparatus and non electrical apparatus whereby said non electrical apparatus is controlled or varied via said electrical sensing means, said AC and DC apparatus and said electrical sensing means connected to a receiver, comprising,(a) a transmitter, including means for generating a carrier wave,(b) means for modulating said carrier wave with one or more subcarrier waves each conveying information relative to a specific function to be controlled or varied, and whereby enabling said function to be controlled from a plurality of inputs from remote areas,(c) means for controlling or varying said function by audio signal, light signal, and by the signal of electromagnetic signal pick up means,(d) auxiliary input jack means for the addition or mixing of auxiliary signals for controlling or varying said function, said auxiliary signals including baseband signals, recorded signals of an operating apparatus identical to that of said AC and DC apparatus and said electrical sensing means,(e) auxiliary output jack means for connecting a recorder for recording the signal generated by said identical apparatus and said electrical sensing means, said recorded signal used for controlling or varying said function,(f) means for receiving, tuning and demodulating said modulated transmitted signal to a resulting amplitude or phase or frequency or pulse or any combination baseband signal and for amplifying the said resulting signal whereby to drive said AC and DC apparatus and non electric apparatus to a desired level of operation;

  • for automatic discontinuance of said operation when said transmitter is not in opertion;

    for selecting said function as a result of voltage changes, pulse changes, frequency changes, phase changes in the said baseband signal,(g) said remote selection, control or varying of said function achieved without direct connection of either said AC and DC apparatus or said sensing means to said control apparatus.

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