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Polling system and method using nondedicated telephone lines

  • US 4,584,602 A
  • Filed: 11/07/1983
  • Issued: 04/22/1986
  • Est. Priority Date: 11/08/1982
  • Status: Expired due to Fees
First Claim
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1. A data collecting system comprising a plurality of receiving stations, each receiving station including:

  • a tuner connected to an antenna;

    memory means for temporarily storing data supplied from an apparatus being used when said tuner receives a marker signal;

    timing means for performing a timing operation when said marker signal is received;

    means for variably setting a timing period of said timing means;

    means for automatically effecting a telephone call after said timing period set by said setting means has elapsed, said means for automatically effecting a telephone call including an automatic transmitter in each receiving station and means for causing a i-th automatic telephone transmitter at a corresponding i-th one of said plurality of receiving stations to commence a telephone call, in accordance with said timing period, at an i-th time beginning a predetermined period before an (i-1)th automatic telephone transmitter at a corresponding (i-1)th one of said plurality of receiving stations terminates data transmission to a central station and releases a telephone circuit, whereby a call signal from said i-th one of said automatic telephone transmitters arrives at said central station immediately after said (i-1)th automatic telephone transmitter releases said telephone circuit;

    means for setting a telephone number of said central station to be called by said means for automatically effecting a telephone call;

    an encoder for encoding data stored by said memory means; and

    means for sending out said data to said central station through a telephone circuit.

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