Method, apparatus and system for visible light communication
First Claim
1. An apparatus for receiving a visible light signal in visible light communication, comprising:
- a receiving module for receiving the visible light signal in the form of a plurality of light spots within a capture region respectively corresponding to light emitted by one or more of a plurality of light emitting regions modulated between a first state and a second state based on a binary bit representation of data;
a decoding module for decoding the visible light signal into the binary bit representation corresponding to the data based on the plurality of light spots received; and
at least one stored reference matrix comprising a predetermined array of binary bit representations;
wherein the plurality of light spots appear within the capture region without being restricted to predetermined locations in the capture region for the visible light signal to be decodable to obtain the data; and
wherein the decoding module is configured to utilize the plurality of light spots to determine a coordinate in the at least one stored reference matrix matching the binary bit representation of the data.
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Accused Products
Abstract
There is provided a method of transmitting a visible light signal in visible light communication, including binarizing data to be transmitted into a binary bit representation, encoding the data for transmission by modulating one or more of a plurality of light emitting regions between a first state and a second state based on the binary bit representation of the data, and transmitting the visible light signal in the form of light emitted by one or more of the plurality of modulated light emitting regions, the visible light signal being decodable to obtain the data. There is also provided a method of transmitting a visible light signal in visible light communication which includes modulating one or more second sets of light emitting regions within the capture region between a first state and a second state based on the bit representations of one or more previous data for enabling error detection. Corresponding methods of receiving a visible light signal and systems are also provided.
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Citations
19 Claims
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1. An apparatus for receiving a visible light signal in visible light communication, comprising:
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a receiving module for receiving the visible light signal in the form of a plurality of light spots within a capture region respectively corresponding to light emitted by one or more of a plurality of light emitting regions modulated between a first state and a second state based on a binary bit representation of data; a decoding module for decoding the visible light signal into the binary bit representation corresponding to the data based on the plurality of light spots received; and at least one stored reference matrix comprising a predetermined array of binary bit representations; wherein the plurality of light spots appear within the capture region without being restricted to predetermined locations in the capture region for the visible light signal to be decodable to obtain the data; and wherein the decoding module is configured to utilize the plurality of light spots to determine a coordinate in the at least one stored reference matrix matching the binary bit representation of the data. - View Dependent Claims (2, 3, 4, 5)
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6. A method of receiving a visible light signal in visible light communication, comprising:
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receiving the visible light signal in the form of a first set of one or more light spots within a capture region respectively corresponding to light emitted by a first set of light emitting regions modulated between a first state and a second state based on a binary bit representation of a current data transmitted; and decoding the visible light signal into the binary bit representation corresponding to the current data based on the first set of one or more light spots received, wherein light spots of the first set of one or more light spots appear at predetermined locations within the capture region, and the visible light signal further comprises one or more second sets of one or more light spots within the capture region respectively corresponding to light emitted by one or more second sets of light emitting regions modulated between a first state and a second state based on binary bit representations of one or more previous data for enabling error detection. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. An apparatus for receiving a visible light signal in visible light communication, comprising:
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a receiving module for receiving the visible light signal in the form of a first set of one or more light spots within a capture region respectively corresponding to light emitted by a first set of light emitting regions modulated between a first state and a second state based on a binary bit representation of a current data transmitted; and a decoding module for decoding the visible light signal into the binary bit representation corresponding to the current data based on the first set of one or more light spots received, wherein the first set of one or more light spots appear at predetermined locations within the capture region, and the visible light signal further comprises one or more second sets of one or more light spots within the capture region respectively corresponding to light emitted by one or more second sets of light emitting regions modulated between a first state and a second state based on binary bit representations of one or more previous data for enabling error detection. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification