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Remote control system with pulse duration responsive means

  • US 3,098,212 A
  • Filed: 05/11/1959
  • Issued: 07/16/1963
  • Est. Priority Date: 05/11/1959
  • Status: Expired due to Term
First Claim
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1. A SYSTEM FOR REMOTELY CONTROLLING THE POWER CIRCUIT OF A TELEVISION RECEIVER AND FOR REMOTELY CHANGING THE LEVEL OF SOUND REPRODUCED BY SAID RECEIVER, COMPRISING A TRANSMITTER TO BE LOCATED REMOTE FROM SAID RECEIVER INCLUDING MEANS UNDER MANUAL CONTROL OF THE OPERATOR FOR TRANSMITTING A CONTINOUS WAVE SIGNAL EITHER OF A SHORT DURATION OR OF A SUBSTANTIALLY LONGER DURATION, MEANS AT THE LOCATION OF SAID RECEIVER TO RECEIVE SAID SIGNAL, MEANS FOR TRANSLATING THE RECEIVED SIGNAL INTO A UNIDIRECTIONAL SIGNAL OF A DURATION CORRESPONDING TO THE DURATION OF THE TRANSMITTED SIGNAL, A FIRST CHANNEL CONNECTED TO SAID TRANSLATING MEANS AND INCLUDING TIME CONSTANT MEANS SUCH THAT IT WILL RESPOND TO SAID UNIDIRECTIONAL SIGNAL REGARDLESS OF WHETHER THE LATTER IS OF SAID SHORT DURATION OR OF SAID SUBSTANTIALLY LONGER DURATION, A FIRST BISTABLE RELAY CONNECTED TO SAID CHANNEL FOR CONTROL THEREBY, A CIRCUIT ARRANGED TO BE OPENED OR CLOSED BY SAID RELAY FOR CHANGING THE LEVEL OF SOUND REPRODUCED BY SAID RECEIVER, A SECOND CHANNEL CONNECTED TO SAID TRANSLATING MEANS AN INCLUDING TIME CONSTANT MEANS SUCH THAT IT WILL RESPOND TO SAID UNIDIRECTIONAL SIGNAL ONLY IF THE LATTER IS OF SAID SUBSTANTIALLY LONGER DURATION, AND A SECOND BISTABLE RELAY CONNECTED TO SAID SECOND CHANNEL FOR CONTROL THEREBY AND ARRANGED TO CONTROL THE POWER CIRCUIT OF SAID RECEIVER.

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