Communication system for vehicle, vehicle, and communication device for vehicle
AssigneeSony Corporation
InventorsAkira Shinada, Kenji Matsumura
Life of this patent
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Abstract
The present invention is directed to vehicle communication equipment capable of transferring information using light without adding new light emitting means, and further, between a stationary apparatus and a vehicle or between vehicles. A light emitted from a signal lamp (11) of a stationarily installed traffic signal (10) or a head lamp (35) or a tail lamp (36) of a vehicle (20) is superimposed with a signal by a modulator (13), the modulated light is received by a light receiving unit (21) of the vehicle (20) side, and the received modulated light is demodulated by a decoder (22) to be displayed on a display panel (24).
Claims17
A vehicle communication system, comprising:
- a light emitting apparatus installed stationarily and configured to emit a visible light to communicate with an operator of a vehicle;
- a modulator configured to modulate the light emitted from said light emitting apparatus by superimposing a predetermined signal thereon;
- a light receiving apparatus installed on a vehicle side and configured to receive a plurality of lights emitted from light emitting apparatuses of other vehicles and superimposed with signals;
- a plurality of phase-locked loops arranged in parallel and each locked at a different frequency such that the plurality of phase-locked loops discriminate between a plurality of the signals which are simultaneously received from the other vehicles;
- a decoder configured to read out the signals superimposed on the lights received by said light receiving apparatus;
- a comparison unit configured to compare an identification of the signals with a predetermined identification such that only data with permission is extracted;
- and
- notifying means for notifying information based on a signal which is read out by said decoder.
A vehicle, comprising:
- a light emitting apparatus configured to emit a visible light outwardly to assist an operator of the vehicle;
- a modulator configured to superimpose a predetermined signal on the light emitted from said light emitting apparatus;
- a light receiving apparatus configured to receive a plurality of lights emitted from light emitting apparatuses of other vehicles and superimposed with signals;
- a plurality of phase-locked loops arranged in parallel and each locked at a different frequency such that the plurality of phase-locked loops discriminate between a plurality of the signals which are simultaneously received from the other vehicles;
- a decoder configured to read the signals superimposed on the lights received by said light receiving apparatus;
- a comparison unit configured to compare an identification of the signals with a predetermined identification such that only data with permission is extracted;
- and
- output means for outputting a signal read out by said decoder.
Dependencies are inferred from the claim text.