Light source switching system and method of light emission control thereof
First Claim
1. A light source switching system, comprising:
- a signal input terminal;
a first input circuit, which is electrically connected to the signal input terminal;
a second input circuit, comprising a first detection unit and a first switch driving unit, wherein the first detection unit is electrically connected to the signal input terminal;
a third input circuit, comprising a second detection unit and a second switch driving unit, wherein the second detection unit is electrically connected to the signal input terminal;
a dimming control unit, which is electrically connected to the second input circuit and the third input circuit;
a DC conversion unit, which is electrically connected to the first input circuit, the second input circuit, the third input circuit and the dimming control unit;
a first switch circuit, which is electrically connected to the DC conversion unit and the first switch driving unit;
a second switch circuit, which is electrically connected to the DC conversion unit and the second switch driving unit;
a first light emitting device, which is electrically connected to the DC conversion unit;
a second light emitting device, which is electrically connected to the first switch circuit; and
a third light emitting device, which is electrically connected to the second switch circuit, wherein the first light emitting device, the second light emitting device and the third light emitting device are connected in parallel with one another.
1 Assignment
0 Petitions
Accused Products
Abstract
A light source switching system and a method thereof include a signal input terminal; first, second and third input circuits; a dimming control unit; a DC conversion unit; first and second switch circuits; and first, second and third light emitting elements. The second and third input circuits respectively include first and second detection units and first and second switch driving units. The DC conversion unit is connected to the first, second, and third input circuits and the dimming control unit. The first and second switch circuits are respectively connected to the DC conversion unit and the first and second switch driving units. The first light emitting device is connected to the DC conversion unit. The second and third light emitting devices are respectively connected to the first and second switch circuits, wherein the first, second and third light emitting devices are connected in parallel with each other.
11 Citations
18 Claims
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1. A light source switching system, comprising:
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a signal input terminal; a first input circuit, which is electrically connected to the signal input terminal; a second input circuit, comprising a first detection unit and a first switch driving unit, wherein the first detection unit is electrically connected to the signal input terminal; a third input circuit, comprising a second detection unit and a second switch driving unit, wherein the second detection unit is electrically connected to the signal input terminal; a dimming control unit, which is electrically connected to the second input circuit and the third input circuit; a DC conversion unit, which is electrically connected to the first input circuit, the second input circuit, the third input circuit and the dimming control unit; a first switch circuit, which is electrically connected to the DC conversion unit and the first switch driving unit; a second switch circuit, which is electrically connected to the DC conversion unit and the second switch driving unit; a first light emitting device, which is electrically connected to the DC conversion unit; a second light emitting device, which is electrically connected to the first switch circuit; and a third light emitting device, which is electrically connected to the second switch circuit, wherein the first light emitting device, the second light emitting device and the third light emitting device are connected in parallel with one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of light emission control, which is used in a light source switching system, the light source switching system comprising a signal input terminal, a first switch unit, a DC conversion unit and a first light emitting device, the method comprising:
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detecting if the signal input terminal receives a first input signal; if yes, outputting a first turn-on signal to the first switch unit and transmitting a first power signal converted and output by the DC conversion unit to the first light emitting device. - View Dependent Claims (16, 17, 18)
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Specification