Projector
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsShota Yamamoto, Kazuhiko Nono, Daizou Seko, Takaaki Gyoten
Life of this patent
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Abstract
Provided is a projector configured to modulate light from a light source unit and project image light, the projector including: a current measurement unit that measures a current supplied from a power supply, the current including at least a current supplied to the light source unit of the projector; and a controller that compares a measured current value measured by the current measurement unit with limit value information determined by user input or based on data stored in advance, and controls power output to the light source unit in accordance with a comparison result.
Claims9
A projector configured to project image light generated by modulating light from a light source unit, the projector comprising:
- a current measurement unit configured to measure an alternating current supplied from a power supply to obtain a measured alternating current value, the current including at least a current to be supplied to the light source unit of the projector;
- a controller configured to compare the measured alternating current value measured by the current measurement unit with limit value information determined by user input or based on data stored in advance, and to control power output to the light source unit in accordance with a comparison result of the measured alternating current value and the limit value information;
- and
- a voltage measurement unit configured to measure a voltage supplied to the projector from the power supply to obtain a measured voltage value,
- wherein the limit value information is a power threshold value, and
- wherein the controller is further configured to calculate power of the projector from the measured alternating current value and the measured voltage value measured by the voltage measurement unit, and to compare the calculated power with the power threshold value, and then to control voltage output to the light source unit in accordance with a comparison result of the calculated power with the power threshold value.
A projector configured to project image light generated by modulating light from a light source unit, the projector comprising:
- a current measurement unit configured to measure an alternating current supplied from a power supply to obtain a measured alternating current value, the current including at least a current to be supplied to the light source unit of the projector;
- a controller configured to compare the measured alternating current value measured by the current measurement unit with limit value information determined by user input or based on data stored in advance, and to control power output to the light source unit in accordance with a comparison result of the measured alternating current value and the limit value information;
- a light source controller configured to control power output to the light source;
- and
- a cooling controller configured to control power output to a cooling unit,
- wherein the current measurement unit is configured to measure a current supplied from the power supply to a cooling unit of the projector,
- wherein the controller is configured to instruct the light source controller and the cooling controller to respectively reduce power output when the measured alternating current value is larger than the limit value information,
- wherein the light source controller is configured to reduce an output power to the light source unit in accordance with the instruction from the controller, and
- wherein the cooling controller is configured to reduce an output power to the cooling unit in accordance with the instruction from the controller.
Dependencies are inferred from the claim text.