MODULATION DEVICE AND LIGHTING DEVICE

摘要

A modulation device includes: a modulation ID signal generator that generates a first ID signal including first identification information; a reception terminal capable of receiving a second ID signal including second identification information; a transmission terminal capable of transmitting the first ID signal and the second ID signal out of the modulation device; a detector that detects a received state in which the second ID signal is received by the reception terminal and an unreceived state in which the second ID signal is not received by the reception terminal; and a switch circuit that outputs the first ID signal to the transmission terminal when the detector detects the unreceived state and outputs the second ID signal to the transmission terminal when the detector detects the received state.

主权项

1. A modulation device that modulates current to be supplied to a lamp of a lighting device capable of visible light communication, the modulation device comprising:
a modulation ID (identification) signal generator that generates a first ID signal, including first identification information, for modulating the current; a reception terminal for receiving, from outside the modulation device, a second ID signal, including second identification information, for modulating the current; a transmission terminal for transmitting the first ID signal and the second ID signal out of the modulation device; a detector that detects a received state in which the second. ID signal is received by the reception terminal and an unreceived state in which the second ID signal is not received by the reception terminal; and a witch circuit that outputs the first ID signal to the transmission terminal when the detector detects the unreceived state and outputs the second ID signal to the transmission terminal when the detector detects the received state.