MODULATION DEVICE, LIGHT EMITTING DEVICE, AND LIGHT EMISSION SYSTEM

摘要

A modulation device includes a modulator circuit that causes a light source to perform light communication, storage storing an internal ID, and a control circuit that determines whether an external ID is input into the modulation device. When the control circuit determines that the external ID is input into the modulation device, the control circuit causes the input external ID to be input, as a modulation signal, into the modulator circuit. When the control circuit determines that the external ID is not input into the modulation device, the control circuit causes the internal ID stored in the storage to be input, as a modulation signal, into the modulator circuit.

主权项

1. A modulation device that causes a light source to perform light communication, the modulation device comprising:
a modulator circuit that modulates a magnitude of current supplied to the light source to cause the light source to perform light communication; storage storing an internal ID, the internal ID being self-identification information; and a control circuit that determines whether an external ID is input into the modulation device, the external ID being identification information supplied from an external source, wherein when the control circuit determines that the external ID is input into the modulation device, the control circuit causes the external ID to be input, as a modulation signal, into the modulator circuit, and when the control circuit determines that the external ID is not input into the modulation device, the control circuit causes the internal ID stored in the storage to be input, as a modulation signal, into the modulator circuit, and the modulator circuit modulates the magnitude of current in accordance with the modulation signal input into the modulator circuit.