APPARATUS AND METHOD FOR PERFORMING COMMUNICATION USING LIGHT WAVELENGTHS IN A VISIBLE LIGHT COMMUNICATION SYSTEM

• US 20120128365A1
• Filed: 05/12/2011
• Published: 05/24/2012
• Est. Priority Date: 11/22/2010
• Status: Abandoned Application

• Current Assignee: Pantech Co. Ltd. (Pantech Incorporated)
• Original Assignee: Pantech Co. Ltd. (Pantech Incorporated)
• Inventors: SEO, Dong Hun, PAEK, Dong Hwa
• Application Number:
  US13/106,033
• Publication Number:
  US 20120128365A1
• Time in Patent Office: Days
• US Class Current: 398/118
• CPC Class Codes: H04B 10/116 Visible light communication

Abstract

A transmitting apparatus includes a controller to classify data to be transmitted and to select a corresponding wavelength, a signal modulator to encode the data into an electrical signal, and a light emitting unit to emit a visual light at the selected wavelength based on the electrical signal. A receiving apparatus includes a controller to classify data to be received, and to select a corresponding wavelength, an optical filter to receive and filter a visible light, a visible light receiver to transform the filtered visible light into an electrical signal, and a signal demodulator to demodulate the electrical signal into digital data. A transmission method includes classifying transmission data, selecting corresponding wavelength, and encoding the data into an electrical signal to transmit. A receiving method includes filtering a received light, transforming the filtered light into an electrical signal, and demodulating the transformed electrical signal into digital data.

Claims

1. An apparatus to transmit data using a wavelength of light in a visual light communication system, comprising:

a controller to classify data to be transmitted, and to select a wavelength corresponding to the data classification;

a signal modulator to encode the data to be transmitted into an electrical signal;

a light emitting unit to emit a visual light at the selected wavelength based on the electrical signal; and

a light emission controller to control the light emitting unit.

2. The apparatus of claim 1, wherein the data to be transmitted is classified as a high accuracy data, high reliability data, high speed transmission data, or a general transmission data.

3. The apparatus of claim 1, wherein, if the data to be transmitted is classified as a high accuracy data or a high reliability data, the controller selects a wavelength corresponding to a red color.

4. The apparatus of claim 3, wherein the data to be transmitted comprises at least one of advertising information, goods management information, position information of a mobile device, authentication information, and payment information.

5. The apparatus of claim 1, wherein, if the data to be transmitted is classified as a high speed transmission data, the controller selects a wavelength corresponding to a blue color.

6. The apparatus of claim 5, wherein the data to be transmitted comprises at least one of voice data, image data, and file data with a data size larger than a reference size.

7. The apparatus of claim 1, wherein, if the data to be transmitted is a general transmission data, the controller selects a wavelength corresponding to a green color.

8. The apparatus of claim 7, wherein if a network service is provided, the data to be transmitted corresponds to data to be transmitted over a network.

9. An apparatus to receive data using a wavelength of light in a visual light communication system, comprising:

a controller to classify data to be received, and to select a wavelength corresponding to the classification of the data to be received;

an optical filter to receive a visible light, and to filter the received visible light using the selected wavelength;

a visible light receiver to transform the filtered visible light corresponding to the selected wavelength into an electrical signal; and

a signal demodulator to demodulate the electrical signal into digital data.

10. The apparatus of claim 9, wherein, the data to be received is classified as a high accuracy data, a high reliability data, a high speed transmission data, or a general transmission data.

11. The apparatus of claim 9, wherein, if the data to be received is classified as a high accuracy data or a high reliability data, the controller selects a wavelength corresponding to a red color.

12. The apparatus of claim 9, wherein, if the data to be received is classified as a high speed transmission data, the controller selects a wavelength corresponding to a blue color.

13. The apparatus of claim 9, wherein, if the data to be received is classified as a general transmission data, the controller selects a wavelength corresponding to a green color as the identified wavelength.

14. An apparatus to receive data using a wavelength of light in a visual light communication system, comprising:

an optical filter to filter a received visible light according to its wavelength;

a visible light receiver to transform the filtered visible light into an electrical signal; and

a signal demodulator to demodulate the transformed electrical signal into digital data, if the data exists in the transformed electrical signal.

15. The apparatus of claim 14, wherein the wavelength corresponds to a classification of the received data;

and wherein the data is classified as a high accuracy data, a high reliability data, a high speed transmission data, or a general transmission data.

16. A method for transmitting data using a wavelength of light in a visual light communication system, comprising:

classifying data to be transmitted;

selecting a wavelength corresponding to the data classification;

encoding the data to be transmitted into an electrical signal; and

emitting a visual light at the selected wavelength based on the electrical signal.

17. A method for receiving data using a wavelength of light in a visual light communication system, comprising:

classifying data to be received, and selecting a wavelength corresponding to the classification of the data to be received;

receiving a visible light, and filtering the received visible light using the selected wavelength;

transforming the filtered visible light corresponding to the selected wavelength into an electrical signal; and

demodulating the electrical signal into digital data.

18. A method for receiving data using a wavelength of light in a visual light communication system, comprising:

filtering a received visible light according to its wavelength;

transforming the filtered visible light into an electrical signal; and

demodulating the transformed electrical signal into digital data, if the data exists in the transformed electrical signal.