APPARATUS AND METHOD FOR PERFORMING COMMUNICATION USING LIGHT WAVELENGTHS IN A VISIBLE LIGHT COMMUNICATION SYSTEM
First Claim
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.
1 Assignment
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Accused Products
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.
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Citations
18 Claims
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1. An apparatus to transmit data using a wavelength of light in a visual light communication system, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus to receive data using a wavelength of light in a visual light communication system, comprising:
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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. - View Dependent Claims (10, 11, 12, 13)
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14. An apparatus to receive data using a wavelength of light in a visual light communication system, comprising:
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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. - View Dependent Claims (15)
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16. A method for transmitting data using a wavelength of light in a visual light communication system, comprising:
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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.
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17. A method for receiving data using a wavelength of light in a visual light communication system, comprising:
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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.
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18. A method for receiving data using a wavelength of light in a visual light communication system, comprising:
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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.
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Specification