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US 2019/0104292 A1Published application
Projector, method for controlling the same, and projection system
AssigneeCanon Kabushiki Kaisha
InventorAzusa Oka
Life of this patent
Estimating the term…
Abstract
A projector, a method for controlling the same, and a projection system which can improve the resolution more efficiently by pixel shifting are disclosed. The projector controls the degree of modulation in a plurality of optical modulation devices and generates a plurality of optical images. To the plurality of optical images, the projector applies first pixel shifting according to the period and second pixel shifting regardless of the period, and projects a resulting image. The first pixel shifting and the second pixel shifting are different from each other, either in the amount of pixel shifting or the direction of pixel shifting.
Claims19
A projector comprising:
- a first output unit configured to output a first optical image based on a frame inputted;
- a first position control unit configured to control a position of the first optical image such that the first optical image in a second subframe period is shifted in a first direction by a first distance relative to the first optical image in a first subframe period, a frame period of the frame including the first subframe period and the second subframe period;
- a second output unit configured to generate a second optical image based on the frame;
- a second position control unit configured to control a position of the second optical image such that the second optical image in the second subframe period is shifted in the first direction by the first distance relative to the second optical image in the first subframe period;
- and
- a projection unit configured to composite the first optical image and the second optical image such that the second optical image is shifted in a second direction different from the first direction by a second distance relative to the first optical image, and to project the composite optical image onto a projection plane.
3 more elements
A projection system which comprises:
- a first projector comprising a first output unit configured to output a first optical image based on an input frame, and a first position control unit configured to control a position of the first optical image such that the first optical image in a second subframe period is shifted in a first direction by a first distance relative to the first optical image in a first subframe period, a frame period of the frame including the first subframe period and the second subframe period;
- and
- a second projector comprising a second output unit configured to generate a second optical image based on the frame, and a second position control unit configured to control a position of the second optical image such that the second optical image in the second subframe period is shifted in the first direction by the first distance relative to the second optical image in the first subframe period,
- wherein the first projector and the second projector are adjusted to project the second optical image in a shifted state where the second optical image is shifted in a second direction different from the first direction by a second distance relative to the first optical image.
1 more element
A method for controlling a projector comprising:
- outputting a first optical image based on a frame inputted;
- controlling a position of the first optical image such that the first optical image in a second subframe period is shifted in a first direction by a first distance relative to the first optical image in a first subframe period, a frame period of the frame including the first subframe period and the second subframe period;
- generating a second optical image based on the frame;
- controlling a position of the second optical image such that the second optical image in the second subframe period is shifted in the first direction by the first distance relative to the second optical image in the first subframe period;
- compositing the first optical image and the second optical image such that the second optical image is shifted in a second direction different from the first direction by a second distance relative to the first optical image;
- and
- projecting the composite optical image onto a projection plane.
4 more elements
A control method of a projection system, wherein the projection system comprises:
- a first projector comprising a first output unit configured to output a first optical image based on an input frame, and a first position control unit configured to control a position of the first optical image such that the first optical image in a second subframe period is shifted in a first direction by a first distance relative to the first optical image in a first subframe period, a frame period of the frame including the first subframe period and the second subframe period;
- and
- a second projector comprising a second output unit configured to generate a second optical image based on the frame, and a second position control unit configured to control a position of the second optical image such that the second optical image in the second subframe period is shifted in the first direction by the first distance relative to the second optical image in the first subframe period,
- wherein the control method comprises
- adjusting the first projector and the second projector to project the second optical image in a shifted state where the second optical image is shifted in a second direction different from the first direction by a second distance relative to the first optical image.
2 more elements
A non-transitory computer-readable medium storing a program executable by a processor included in a projector, wherein the program, when executed by the processor, causes the projector to function as:
- a first output unit configured to output a first optical image based on a frame inputted;
- a first position control unit configured to control a position of the first optical image such that the first optical image in a second subframe period is shifted in a first direction by a first distance relative to the first optical image in a first subframe period, a frame period of the frame including the first subframe period and the second subframe period;
- a second output unit configured to generate a second optical image based on the frame;
- a second position control unit configured to control a position of the second optical image such that the second optical image in the second subframe period is shifted in the first direction by the first distance relative to the second optical image in the first subframe period;
- and
- a projection unit configured to composite the first optical image and the second optical image such that the second optical image is shifted in a second direction different from the first direction by a second distance relative to the first optical image, and to project the composite optical image onto a projection plane.
3 more elements
Dependencies are inferred from the claim text.