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CORDLESS SCANNING PROBE

  • US 3,826,900 A
  • Filed: 10/13/1972
  • Issued: 07/30/1974
  • Est. Priority Date: 10/13/1972
  • Status: Expired due to Term
First Claim
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1. In combination with a registering business machine:

  • a probe having a reading end adapted to be scribed across the coded data of a record marker which record marker is attached to a unit of merchandise;

    illumination means for illuminating said coded data;

    transducer means affixed to said probe for converting the reflection of said coded data into corresponding electrical signals as said probe is scribed across said coded data, said transducer means being comprised of, a first photodetector means responsive to certain portions of the coded data for providing an electrical signal each time the reading end of said probe is scribed across said coded data, a second photodetector means responsive to the remaining portions of the coded data for providing an electrical signal each time the reading end of said probe is scribed across said coded data;

    modulation means for receiving the signals from said first and said second photodetector means and for providing modulating signals, corresponding to said received signals, said modulation means being comprised of, a first frequency modulated oscillator, the output frequency of which is proportional to the electrical signal from said first photodetector means, a second frequency modulated oscillator, the output frequency of which is proportional to the electrical signal from said second photodetector means;

    means for combining the output frequency signals from said first and said second frequency modulated oscillators and for feeding said combined signals to said transmitter means;

    transmitter means fOr transmitting radio waves proportional to said corresponding electrical signals; and

    receiver means for receiving said transmitted signals and for providing said signals to said information utilizing device for registering therein.

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