Transmission device, transmission method, reception device, and reception method
AssigneePanasonic Intellectual Property Corporation of America
InventorsYutaka Murakami, Nobuhiko Hashida
Life of this patent
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Abstract
A transmission device includes a symbol generator that generates a modulation symbol by mapping transmission data to a signal point arranged in a two-dimensional or three-dimensional color space; and an outputter that outputs an optical signal modulated according to the modulation symbol.
Claims4
A transmission device, comprising:
- circuitry:
- and a light emitter, wherein the circuitry, in operation, performs:
- generating
- a control symbol including information indicating a color space selected from color spaces,
- a data symbol by mapping transmission data to a signal point arranged in the color space;
- and
- transmitting the control symbol and the data symbol via the light emitter, wherein
- the control symbol is a symbol used by a reception device for determining whether the data symbol can be demodulated or not.
A transmission method performed by a transmission device including a light emitter, the transmission method comprising:
- generating
- a control symbol including information indicating a color space selected from color spaces,
- a data symbol by mapping transmission data to a signal point arranged in the color space;
- and
- transmitting the control symbol and the data symbol via the light emitter, wherein
- the control symbol is a symbol used by a reception device for determining whether the data symbol can be demodulated or not.
A reception device, comprising:
- circuitry;
- and a light receiver, wherein the circuitry, in operation, performs:
- obtaining a received optical signal, via the light receiver, including a control symbol and a data symbol;
- demodulating the control symbol to obtain information indicating a color space selected from color spaces;
- and
- demodulating the data symbol based on the information indicating the color space, the data symbol being generated by mapping transmission data to a signal point arranged in the color space, wherein
- the control symbol is a symbol used by the reception device for determining whether the data symbol can be demodulated or not.
A reception method performed by a reception device including a light receiver, the reception method comprising:
- obtaining a received optical signal, via the light receiver, including a control symbol and a data symbol;
- demodulating the control symbol to obtain information indicating a color space selected from color spaces;
- and
- demodulating the data symbol based on the information indicating the color space, the data symbol being generated by mapping transmission data to a signal point arranged in the color space, wherein
- the control symbol is a symbol used by the reception device for determining whether the data symbol can be demodulated or not.
Dependencies are inferred from the claim text.