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US 10,485,069 B2Granted
Illuminating apparatus
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKeisuke Seki, Shigeru Ido, Kazuhiko Hayashi
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Abstract
An illuminating apparatus includes a first light emitter, a second light emitter which emits light including more predefined color components than light emitted by the first light emitter, and a lighting device which supplies current modulated according to a visible light communication signal, to the first light emitter. The lighting device supplies a constant current to the second light emitter, while the first light emitter is supplied with current.
Claims8
An illuminating apparatus, comprising:
- a first light emitter;
- a second light emitter which emits light including more red components than light emitted by the first light emitter;
- and
- a lighting device including a control circuit that obtains a visible light communication signal that causes light emitted by the illuminating apparatus to blink at a rate that is unrecognizable to human eyes and a bright and dark pattern created by the blinking light is a data transmission signal, the control circuit controls a first current supplied to the first light emitter by modulating the first current according to the visible light communication signal, the control circuit controls a second current supplied to the second light emitter by modulating the second current according to the visible light communication signal in reverse phase relative to the first current,
- the lighting device supplies, to the second light emitter, the second current modulated in reverse phase relative to the first current, while the first current is supplied to the first light emitter.
2 more elements
Dependencies are inferred from the claim text.