Communications infrasturcture system for vehicles
First Claim
1. A communications infrastructure system for vehicles comprising:
- a plurality of beacons positioned along a road wherein said plurality of beacons includes first beacons, each first beacon transmitting a first signal, second beacons, each second beacon transmitting a second signal and third beacons, each third beacon transmitting a third signal, wherein the beacons are arranged so that a vehicle traveling down the road receives a predetermined sequence of first, second and third signals;
a receiver provided on a vehicle which receives the first, second and third signals;
a signal discrimination unit which discriminates between said first, second and third signals received by said receiver;
a past record memory which records a past record of discrimination results of said signal discrimination unit; and
a signal generator for generating a signal corresponding to the past record recorded in said past record memory.
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Accused Products
Abstract
A communications infrastructure system for vehicles. The communications infrastructure system includes an infrastructure including a plurality of beacons sequentially positioned along a road wherein the beacons transmit respective ones of a repeated series of at least three kinds of signals. The communications infrastructure system also includes a communications apparatus provided with a vehicle, which communications apparatus comprises a receiver for receiving a signal transmitted by the beacons, a unit for discriminating the kind of signal, a memory for recording a past record of the kind of signal, and a signal generator generating a signal corresponding to the past record.
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Citations
22 Claims
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1. A communications infrastructure system for vehicles comprising:
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a plurality of beacons positioned along a road wherein said plurality of beacons includes first beacons, each first beacon transmitting a first signal, second beacons, each second beacon transmitting a second signal and third beacons, each third beacon transmitting a third signal, wherein the beacons are arranged so that a vehicle traveling down the road receives a predetermined sequence of first, second and third signals; a receiver provided on a vehicle which receives the first, second and third signals; a signal discrimination unit which discriminates between said first, second and third signals received by said receiver; a past record memory which records a past record of discrimination results of said signal discrimination unit; and a signal generator for generating a signal corresponding to the past record recorded in said past record memory. - View Dependent Claims (2, 3, 4, 5)
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6. An infrastructure for a communications system comprising:
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a plurality of beacons positioned along a road; a signal controller which controls said plurality of beacons so that each of a first predetermined portion of the plurality of beacons transmits a first signal, while each of a second portion of the plurality of beacons transmits a second signal and each of a third portion of the plurality of beacons transmits a third signal so that a vehicle traveling along the road in a first direction will pass a predetermined sequence of first, second and third signals; and a repeated series of said first, second and third signals being transmitted along the road. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A communications apparatus for a vehicle comprising:
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a receiver for receiving signals from a plurality of beacons, wherein each of the beacons transmits a signal chosen from a predetermined group including at least first, second and third signals; a signal discrimination unit which discriminates between the first, second and third signals received by said receiver from the beacons; a memory coupled to said signal discrimination unit which records a past record of a sequence of the first, second and third signals received by said receiver; and a signal generator for generating a signal corresponding to the past record recorded in said memory, wherein the sequence of first, second and third signals received by said receiver indicates a direction of travel of the vehicle past the beacons. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification