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Method and apparatus for determining the position of a moving object, by using visible light communication

A technology of moving objects and visible light, which is applied in direction finders using electromagnetic waves, beacon systems using electromagnetic waves, beacon systems using radio waves, etc. It can solve the problem that the position determination system is difficult to put into practical applications and is expensive. question

Inactive Publication Date: 2009-02-04
KK TOSHIBA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, any system that uses multiple video cameras mounted on a car is very expensive, not only because of the cameras but also because of the devices that perform complex signal processing, such as processing stereoscopic video signals
Therefore, this type of position determination system is difficult to be put into practical application

Method used

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  • Method and apparatus for determining the position of a moving object, by using visible light communication
  • Method and apparatus for determining the position of a moving object, by using visible light communication
  • Method and apparatus for determining the position of a moving object, by using visible light communication

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Embodiment Construction

[0017] Embodiments of the present invention will be described below in conjunction with related drawings.

[0018] (Configuration of the present invention)

[0019] Figure 1 shows the main components of a position determination system according to an embodiment of the invention.

[0020] This embodiment is a system for determining the current position of an automobile 1 (hereinafter referred to as a vehicle) using a visible light communication system. The main components of the system are: light pole 3 and position determining device 10 . The light pole 3 is located beside the road 2 on which the vehicle 1 travels. A position determination device 10 (hereinafter referred to as a vehicle position determination device) is mounted on the vehicle 1 .

[0021] The light pole 3 has a road lighting lamp 30 and a visible light communication device 31 . The lamp 30 illuminates the road 2 . The lamp 30 has a light emitting diode (hereinafter referred to as LED) and emits illuminati...

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PUM

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Abstract

Provided is an apparatus for determining the present position of a vehicle (1), by utilizing a visible-light communication system. The apparatus uses a visible-light communication beacon and video data representing an image photographed by one camera. The beacon emits a visible optical signal (310), thus transmitting position data. The visible-light communication beacon comprises a road-illuminating lamp (30) and a visible-light communication apparatus (31), both secured to a lamp post (3). The vehicle (1) has the camera and a vehicle position determination apparatus (10). The vehicle position determination apparatus (10) demodulates the visible optical signal (310), there restoring the position data, and calculates the present position of the vehicle (1) from the position data.

Description

Background technique [0001] The present invention generally relates to a position determination system using visible light communication. More particularly, the present invention relates to a position determination system for determining the position of a moving object, such as a vehicle. [0002] In recent years, a position determining system using a global positioning system (GPS) has been widely used in a system for determining a position of a vehicle, and a representative example is an automobile. Each position determination system of this type is incorporated into, for example, car navigation devices. [0003] Recently, a position determination system using a visible light communication system has been proposed as a high-precision position determination system. The visible light communication system utilizes a visible light signal and can transmit the visible light signal modulated with position data necessary for a position determination function. (See, eg, Japanese P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C3/00H04B10/00G01C3/06G01S1/70G01S3/782G01S5/16H04B10/11H04B10/116H04B10/118H04B10/54
CPCG01S5/16G08G1/096758G08G1/096716G01S1/70G08G1/096783G01S2201/01G01S1/7038G01S1/7034G01S1/02
Inventor 岛田重人
Owner KK TOSHIBA
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