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Movable body detecting/notifying system

  • US 6,433,705 B2
  • Filed: 04/13/2001
  • Issued: 08/13/2002
  • Est. Priority Date: 06/05/1998
  • Status: Expired due to Fees
First Claim
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1. A movable body detecting/notifying system for allowing a detecting movable body to detect and report a detected movable body by using electromagnetic wave communication, comprising:

  • means mountable to the detected movable body for transmitting a small-wavelength electromagnetic wave not easily diffractable by an obstruction;

    a repeater for receiving said small-wavelength electromagnetic wave and adding a relay code thereto, said repeater relaying said small-wavelength electromagnetic wave with said relay code added thereto in a predetermined direction;

    when the detecting movable body receives said small-wavelength electromagnetic wave, said detecting movable body determines whether or not a relay code has been added to said small-wavelength electromagnetic wave; and

    means mountable to the detecting movable body for generating a first notice for reception of the small-wavelength electromagnetic wave with no relay code added thereto or a second notice for reception of the small-wavelength electromagnetic wave with the relay code added thereto.

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