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Remotely-synchronizable time display

  • US 5,251,191 A
  • Filed: 10/15/1990
  • Issued: 10/05/1993
  • Est. Priority Date: 10/26/1989
  • Status: Expired due to Fees
First Claim
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1. An arrangement for transmitting encoded absolute time information to at least one evaluating station which is connected to a local AC power transmission network which supplies AC electrical power to the at least one evaluating station, comprisinga central converter-receiver, including a receiver for receiving a carrier frequency encoded absolute time information signal, and a frequency converter connected to the output of said receiver for converting the frequency of the carrier frequency encoded absolute time information signal to a converted frequency to derive a converted frequency encoded absolute time information signal and for conducting the converted frequency encoded absolute time information signal into the local AC power transmission network which is connected between the frequency converter and the at least one evaluating station as a local transmission path for the converted frequency encoded absolute time information signal, andthe at least one evaluating station includes an autonomously operated timer which is remotely-synchronizable by the converted frequency encoded absolute time information signal, a timer actuated switch for time controlled switching of electrical power to a load or appliance, a station receiver for receiving the converted frequency encoded absolute time information signal from the local AC power transmission network for correction of the absolute time of the autonomously operated timer, an input coupling stage for inductively coupling the station receive to the local AC power transmission network which includes a coupling transformer and an oscillating circuit, the frequency of which is correlated to the converted frequency, and the station input coupling stage is combined with an AC power supply connector for the station.

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