Projector and method for controlling projector
AssigneeSeiko Epson Corporation
InventorsTakaaki OZAWA, Takefumi SAKAKIBARA, Kazunori MAETA
Life of this patent
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Abstract
A projector including a discharge tube as a light source includes a light source driver that supplies the discharge tube with electric power and an electric power control portion that controls the level of the electric power with which the light source driver supplies the discharge tube to perform a normal mode in which the light source driver supplies electric power of a predetermined electric power level and a power saving mode in which the light source driver supplies electric power of a power saving level lower than the predetermined electric power level. The power saving mode is a mode in which light emission from the discharge tube can be maintained.
Claims12
A projector that includes a discharge tube and projects an image by using a light source including the discharge tube, the projector comprising:
- a discharge tube drive section that supplies the discharge tube with electric power;
- and
- an electric power control section that controls the level of the electric power with which the discharge tube drive section supplies the discharge tube to perform a normal mode in which the discharge tube drive section supplies electric power of a rated electric power level and a power saving mode in which the discharge tube drive section supplies electric power of a power saving level lower than the rated electric power level when the image is not required to be projected,
- wherein the power saving mode is a mode in which slight light emission can be maintained.
A method for controlling a projector that includes a discharge tube and projects an image by using a light source including the discharge tube, the method comprising
- controlling the level of electric power supplied to the discharge tube to perform a normal mode in which electric power of a rated electric power level is supplied to the discharge tube and a power saving mode in which electric power of a power saving level lower than the rated electric power level is supplied to the discharge tube when the image is not required to be projected,
- wherein the discharge tube can maintain slight light emission in the power saving mode.
Dependencies are inferred from the claim text.