Light source control device and light source control method
AssigneeMinebea Co., Ltd.
InventorYoshihiro Nakamura
Life of this patent
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Abstract
A light source control device controlling a light source that emits light corresponding to supplied current and a color wheel having a plurality of color segments that converts the light emitted from the light source, the light source control device includes: a current generation circuit, which supplies current to the light source, based on a control signal for controlling an amount of the light of the light source; and a control circuit unit, which stores a plurality of modulation factors corresponding to the plurality of color segments and has a plurality of calculation units corresponding to the plurality of color segments, and which operates the calculation unit corresponding to the segment in synchronization with each segment to thus calculate control information of the control signal.
Claims6
A light source control device controlling a light source that emits light corresponding to supplied current and a color wheel having a plurality of color segments that converts the light emitted from the light source, the light source control device comprising:
- a current generation circuit, which supplies current to the light source, based on a control signal for controlling an amount of the light of the light source;
- and
- a control circuit unit, which stores a plurality of modulation factors corresponding to the plurality of color segments and has a plurality of calculation units corresponding to the plurality of color segments, and which operates the calculation unit corresponding to the segment in synchronization with each segment to calculate control information of the control signal.
A light source control method of a light source control device that controls:
- a light source that emits light corresponding to supplied current;
- a control circuit unit that has a color wheel having a plurality of color segments that converts the light emitted from the light source, a plurality of modulation factors corresponding to the plurality of color segments and a plurality of calculation units corresponding to the plurality of color segments, and a current generation circuit that supplies current to the light source, based on a control signal for controlling an amount of the light of the light source, the method comprising:
- operating the calculation unit corresponding to the segment in synchronization with each segment to calculate control information of the control signal, and
- supplying current based on the control signal to the light source.
Dependencies are inferred from the claim text.