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Light source switching system and method of light emission control thereof

  • US 10,237,934 B1
  • Filed: 07/09/2018
  • Issued: 03/19/2019
  • Est. Priority Date: 05/11/2018
  • Status: Active Grant
First Claim
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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.

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