| 摘要 |
<p num="1"><br/><br/><br/>The present invention provides a method and apparatus of using light-emitting <br/>elements for illumination as well as communication of data, wherein potential <br/>flicker due to sub-fusion frequency data correlations can be reduced compared <br/>to prior art techniques, while reducing redundancy in the data transmission. <br/>The intensity of the illumination from the light-emitting elements is <br/>controlled by a dimming signal such as a pulse width modulation (PWM) signal <br/>or a pulse code modulation (PCM) signal, for example. An amplitude-modulated <br/>data signal is then superimposed on the dimming signal for communication of <br/>data. The dimming signal thus acts as a carrier signal for the data signal. A <br/>sensing means is then used to receive the data signal by detecting all or part <br/>of the illumination from the light-emitting elements. The data signal can <br/>subsequently be extracted from the detected illumination.<br/>
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