Method for dimming multiple lamps
First Claim
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1. A method for dimming multiple lamps, comprising the steps of:
- A. getting a brightness range of a lighting area which has at least two light sources to emit light;
B. getting a dimming range and a brightness of the light sources, and a luminosity adjustment upper limit and a luminosity adjustment lower limit to determine the dimming range;
C. setting the brightness of the lighting area; and
D. determining a dimming value of each light source and defining different dimming values for the light sources;
wherein the step D is preceded by a step of determining the brightness that sets a brightness base value, at step C when the brightness being greater than or equal to the brightness base value the dimming values of the light sources are equal;
when the brightness being smaller than the brightness base value proceed step D.
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Abstract
A method for dimming multiple lamps includes: getting a brightness range of a lighting area which has at least two light sources, getting a dimming range of the light sources, setting the brightness of the lighting area, determining the dimming value of each light source, and defining different dimming values of at least two light sources. The luminosity adjustment upper limit and lower limit of the individual light sources are obtained. After the brightness of the lighting area is set the dimming value of each light source is determined to form the brightness of the lighting area through the two light sources of different brightness.
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Citations
17 Claims
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1. A method for dimming multiple lamps, comprising the steps of:
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A. getting a brightness range of a lighting area which has at least two light sources to emit light; B. getting a dimming range and a brightness of the light sources, and a luminosity adjustment upper limit and a luminosity adjustment lower limit to determine the dimming range; C. setting the brightness of the lighting area; and D. determining a dimming value of each light source and defining different dimming values for the light sources; wherein the step D is preceded by a step of determining the brightness that sets a brightness base value, at step C when the brightness being greater than or equal to the brightness base value the dimming values of the light sources are equal;
when the brightness being smaller than the brightness base value proceed step D. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for dimming multiple lamps, comprising the steps of:
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A. getting a brightness range of a lighting area which has at least two light sources to emit light; B. getting a dimming range and a brightness of the light sources, and a luminosity adjustment upper limit and a luminosity adjustment lower limit to determine the dimming range; C. setting the brightness of the lighting area; and D. determining a dimming value of each light source and defining different dimming values for the light sources; further having a circuit to implement the method, the circuit including; a dimming signal source to generate a dimming signal proportional to the dimming range of the light sources; a duty voltage regulation unit which receives the dimming signal and outputs a voltage regulation signal to a plurality of power transformation units which receive electric power from a power source, the voltage regulation signal controlling the amount of power output from the power transformation units to the light sources; and a switch unit which is connected to the duty voltage regulation unit in a parallel fashion and also connected to the dimming signal source and the power transformation units, and sets a different cutoff voltage value for each power transformation unit; wherein the voltage of the dimming signal and the cutoff voltage value are compared such that when the dimming signal is lower than the cutoff voltage value, a cutoff signal is generated to turn off one corresponding power transformation unit so that the dimming signal adjusts the amount of power output to the light sources and controls asynchronous ON/OFF of the power transformation units. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification