| 摘要 |
<p>An electronic ballast (10), on command, optically transmits its identification signature or other data by cw modulation of luminosity of lamps (34). The data is transmitted by momentarily interrupting the lamp current, turning off the inverter section (14), to mark the beginning and end of successive periods represent either a logic one or zero in accordance with the data transmitted. A receiver monitors the luminosity of the lamps and compares instantaneous luminosity to average luminosity to detect the beginning and end of each period.</p> |
