Method for exchanging messages in a navigation system using visible light communications

a communication method and navigation system technology, applied in traffic control systems, navigation instruments, instruments, etc., can solve problems such as low power consumption, inability to use gps-based navigation services, and limitations in information transmission

Inactive Publication Date: 2009-06-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, VLC is reliable in terms of security and consumes low power.
The conventional location-based service using a power line simply provides information about a fixed object to a mobile terminal, thus having limitations in information transmission.
When a pedestrian enters a building or underground, however, the GPS-based navigation service is not available as GPS signals cannot be received.

Method used

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  • Method for exchanging messages in a navigation system using visible light communications
  • Method for exchanging messages in a navigation system using visible light communications
  • Method for exchanging messages in a navigation system using visible light communications

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Embodiment Construction

[0030]The matters defined in the description such as a detailed construction and elements are provided to assist in a comprehensive understanding of exemplary embodiments of the invention. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0031]Exemplary embodiments of the present invention provide an indoor navigation system for providing a navigation function within a large-scale building structure such as a skyscraper or a huge mall by VLC and a message exchange procedure between a mobile terminal and a navigation server in the navigation system.

[0032]To overcome the problem encountered with a conventional GPS-based navigation system that navigation information is not available in a GPS shadow area like building indoors, ...

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Abstract

Method and device for exchanging messages in a VLC navigation system is provided, in which a map server generates a provision message in the form of visible light signals through all lamps in an area, using a PLC network, where a navigation service is provided, a terminal that wants to implement the navigation service among terminals that have received the provision message transmits a registration request message to the map server, the map server transmits a registration response message for the registration request message to the terminal, the terminal transmits a map request message including information about a destination to the map server, the map server transmits a map response message including information about a path to the destination to the terminal, and the terminal displays map information and the path.

Description

CLAIM OF PRIORITY[0001]This application claims the benefit of the earlier filing date, under 35 U.S.C. §119(a), to that Korean Patent Application filed in the Korean Intellectual Property Office on Dec. 18, 2007 and assigned Serial No. 2007-133315, the entire disclosure of which is hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention generally relates to a Visible Light Communication (VLC) navigation system and more particularly, to a method for exchanging messages between a visible light terminal and a navigation server in a navigation system.[0004]2. Description of the Related Art[0005]Owing to the improved light emission efficiency and decreased price of Light Emitting Diodes (LEDs), LEDs have gained popularity in the general lighting market, which includes fluorescent lighting and incandescent lighting, as well as in the special lighting market, including portable devices, displays, cars, signal signs, and adverti...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01C21/00
CPCG01C21/20H04B10/116H04B10/1149G01C21/3885G01C21/367G01C21/3676G01C21/3453
Inventor WON, EUN-TAEANN, JONG-HOONKIM, DAE-SEOKKANG, NOH-GYOUNGPARK, SEUNG-HOONSON, JAE-SEUNG
Owner SAMSUNG ELECTRONICS CO LTD
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