Method and device for modulating the light emission of a lighting device
First Claim
1. A computer-executable method for modulating a light emission of a lighting device, the method comprising:
- generating a control signal for controlling the light emission of the lighting device, the control signal comprising a plurality of frames of an equal time duration, and each of the frames including a pulse of a sequence of pulses for switching the lighting device on or off for modulating the light emission of the lighting device, each pulse of the sequence of pulses keyed according to a unique spreading code that particularly identifies the lighting device.
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Abstract
The invention relates to controlling a lighting device, particularly to the modulation of light generated by a solid state lighting (SSL) device. The invention provides a method and device for modulating the light emission of a lighting device by keying each pulse (14) of a sequence of pulses (16) contained in the control signal (10) according to a spreading code. Thus, the light emission of a lighting device may be identified by detecting the spreading code used for modulating the light emission. The invention is particularly suitable for lighting means containing several lighting devices such as a LED lighting board with dozens of LEDs since the light emission of each lighting device may be detected by the spreading code used for modulating the light emission.
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Citations
8 Claims
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1. A computer-executable method for modulating a light emission of a lighting device, the method comprising:
generating a control signal for controlling the light emission of the lighting device, the control signal comprising a plurality of frames of an equal time duration, and each of the frames including a pulse of a sequence of pulses for switching the lighting device on or off for modulating the light emission of the lighting device, each pulse of the sequence of pulses keyed according to a unique spreading code that particularly identifies the lighting device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
Specification