Low power projection display devices
First Claim
1. A projection-type display device, comprising:
- a light source for generating light;
an optical modulation device configured to selectively transmit light generated by the light source according to video data included in a video signal provided to the optical modulation device;
a projection lens system configured to output light, transmitted by the optical modulation device, along a projection path;
at least one battery configured to store electrical energy independent of an external power supply; and
an electrical energy transport system configured to transmit the electrical energy from the at least one battery to the light source and the optical modulation device.
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Accused Products
Abstract
Described herein are devices that provide projection-type video output in a portable design. The projection-type display devices include a battery that stores electrical energy. The battery increases display device portability and flexible usage by permitting display device operation in locations not serviceable by a fixed power supply. For example, inclusion of a battery extends projector-type display device usage into a car, library, remote environment, or any other setting where fixed power outlets are not readily available or within power cord reach. To increase device endurance from a finite battery power supply, the present invention may also implement one or more hardware designs that reduce power consumption.
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Citations
24 Claims
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1. A projection-type display device, comprising:
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a light source for generating light; an optical modulation device configured to selectively transmit light generated by the light source according to video data included in a video signal provided to the optical modulation device; a projection lens system configured to output light, transmitted by the optical modulation device, along a projection path; at least one battery configured to store electrical energy independent of an external power supply; and an electrical energy transport system configured to transmit the electrical energy from the at least one battery to the light source and the optical modulation device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 22)
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11. A display device, comprising:
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a base that includes a) a housing, b) a light source within the housing configured to generate light, and c) at least one battery within the housing configured to store electrical energy independent of an external power supply; a projection chamber that includes a) a projection chamber housing, b) an optical modulation device configured to selectively transmit light generated by the light source according to video data included in a video signal provided to the optical modulation device, and c) a projection lens system configured to output light transmitted by the optical modulation device along a projection path; a positional interface, coupled to the base and coupled to the projection chamber, configured to allow the projection chamber to be moved relative to the base and to allow the projection chamber to maintain a constant position relative to the base after being moved; and an electrical energy transport system configured to transmit electrical energy from the at least one battery to the light source and to transmit electrical energy from the at least one battery in the base, through the positional interface, and to the optical modulation device in the projection chamber. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 23)
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21. A method that facilitates displaying an image, comprising:
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transmitting light generated by a light source in a base to an optical modulation device in a projection chamber, the transmitting including transmitting the light selectively via a positional interface according to data included in a signal; moving the projection chamber from a first position mechanically stabilized by the positional interface relative to the base to a second position mechanically stabilized by the positional interface relative to the base; storing electrical energy in at least one battery to facilitate the transmitting including storing the electrical energy independent of an external power supply; and transferring the electrical energy from the at least one battery to the light source and the optical modulation device. - View Dependent Claims (24)
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Specification