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Movable body communication system

  • US 5,963,149 A
  • Filed: 05/01/1996
  • Issued: 10/05/1999
  • Est. Priority Date: 05/02/1995
  • Status: Expired due to Term
First Claim
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1. A movable body communication system having at least one transceiver, disposed with respect to at least one movement path of a movable body, for transmitting a transmit signal to said movable body and receiving a response signal transmitted from said movable body responsive to said transmit signal to thereby perform data transmission/reception with said movable body within a time period during a single scan of a communication zone, said transmit signal being transmitted in a beam-shaped pattern having a cross-sectional radiation area smaller than the area of the communication zone, said at least one transceiver comprising:

  • an antenna for performing transmission of said transmit signal and reception of said response signal; and

    scanning means for scanning said transmit signal transmitted from said antenna in a direction orthogonal to said at least one movement path of said movable body through a plurality of movement path portions, and for specifying said movable body for data exchange between said transceiver and said movable body in an identified one of said plurality of movement path portions, identification of said movable body and said data exchange occurring while said movable body is within the same communication zone.

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