Image display apparatus, image display method, and recording medium having image display program stored therein
First Claim
1. An image display apparatus for emitting laser light, displaying a first image on a first projection surface, and displaying a second image on a second projection surface comprising:
- a laser light source for outputting said laser light;
a scanner for scanning said laser light;
a light splitting element for splitting said laser light scanned by said scanner into a first laser beam directed to said first projection surface and a second laser beam directed to said second projection surface;
a photodetector for detecting said second laser beam reflected by an external object on said second projection surface; and
a controller for controlling an operation of said image display apparatus, said controller being configured;
to allow said scanner to operate at a prescribed scanning frequency,to execute processing of accepting image data and increasing luminance of a pixel in a designated region included in accepted said image data,to control output of said laser light by said laser light source based on said image data subjected to said processing and said scanning frequency,to calculate a position of said external object based on a scanning position of said laser light at a light detection timing of said photodetector, andto create an instruction to change said second image based on calculated said position,wherein said controller is configured to define a region including calculated said position as said designated region, and a size of said designated region is larger than a distance of movement of said object in a time interval between changes of said second image.
1 Assignment
0 Petitions
Accused Products
Abstract
A projector divides and projects a single image onto two different projection surfaces and performs virtual user interface through one projection surface. The projector projects a VUI screen image on a desk and projects a main projected screen image on a wall. The projector includes a light receiving element, which is installed at a position that receives light emitted to the desk (the projection surface of the VUI screen image) and reflected (or scattered) by an object in the vicinity of the desk. The projector calculates a position of the object based on a light detection timing of the light-receiving element and a scanning position of light at each time and changes a projected image based on the calculated position. The projector displays a designated region of the VUI screen image to be brightened.
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Citations
9 Claims
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1. An image display apparatus for emitting laser light, displaying a first image on a first projection surface, and displaying a second image on a second projection surface comprising:
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a laser light source for outputting said laser light; a scanner for scanning said laser light; a light splitting element for splitting said laser light scanned by said scanner into a first laser beam directed to said first projection surface and a second laser beam directed to said second projection surface; a photodetector for detecting said second laser beam reflected by an external object on said second projection surface; and a controller for controlling an operation of said image display apparatus, said controller being configured; to allow said scanner to operate at a prescribed scanning frequency, to execute processing of accepting image data and increasing luminance of a pixel in a designated region included in accepted said image data, to control output of said laser light by said laser light source based on said image data subjected to said processing and said scanning frequency, to calculate a position of said external object based on a scanning position of said laser light at a light detection timing of said photodetector, and to create an instruction to change said second image based on calculated said position, wherein said controller is configured to define a region including calculated said position as said designated region, and a size of said designated region is larger than a distance of movement of said object in a time interval between changes of said second image. - View Dependent Claims (2, 3, 4, 5)
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6. An image display apparatus for emitting laser light, displaying a first image on a first projection surface, and display a second image on a second projection surface comprising:
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a laser light source for outputting said laser light; a scanner for scanning said laser light; a light splitting element for splitting said laser light scanned by said scanner into a first laser beam directed to said first projection surface and a second laser beam directed to said second projection surface; a photodetector for detecting said second laser beam reflected by an external object on said second projection surface; and a controller for controlling an operation of said image display apparatus, said controller being configured; to allow said scanner to operate at a prescribed scanning frequency, to execute processing of accepting image data and increasing luminance of a pixel in a designated region included in accepted said image data, to control output of said laser light by said laser light source based on said image data subjected to said processing and said scanning frequency, to calculate a position of said external object based on a scanning position of said laser light at a light detection timing of said photodetector, and to create an instruction to change said second image based on calculated said position, wherein said controller is configured to define a region including calculated said position as said designated region, and to calculate a predicted position of said object based on a change of said position and a time interval between changes of said second image and define a region including said predicted position as said designated region.
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7. An image display apparatus for emitting laser light, displaying a first image on a first projection surface, and displaying a second image on a second projection surface comprising:
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a laser light source for outputting said laser light, said laser light source including a two-color laser for outputting red laser light and blue laser light, and a green laser for outputting green laser light; a resonant MEMS mirror for scanning said laser light; a beam splitter for splitting said laser light scanned by said resonant MEMS mirror into a first laser beam directed to said first projection surface and a second laser beam directed to said second projection surface; a photodiode for detecting said second laser beam reflected by an external object on said second projection surface; and a controller for controlling an operation of said image display apparatus, said controller being configured; to allow said resonant MEMS mirror to operate at a prescribed scanning frequency, to execute processing of accepting image data and setting to white a pixel in a designated region included in accepted said image data, to control output of said laser light by said laser light source based on said image data subjected to said processing and said scanning frequency, to calculate a position of said external object based on a scanning position of said laser light at a light detection timing of said photodiode, to create an instruction to change said second image based on calculated said position, and to set a region including calculated said position as said designated region, wherein a size of said designated region is larger than a distance of movement of said object in a time interval between changes of said second image.
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8. A method for emitting laser light, displaying a first image on a first projection surface, and displaying a second image on a second projection surface, using an image display apparatus,
said image display apparatus having: -
a laser light source for outputting said laser light, a scanner for scanning said laser light, a light splitting element for splitting said laser light scanned by said scanner into a first laser beam directed to said first projection surface and a second laser beam directed to said second projection surface, and a photodetector for detecting said second laser beam reflected by an external object on said second projection surface, said method comprising; executing processing of accepting image data and increasing luminance of a pixel in a designated region included in accepted said image data; allowing said scanner to operate at a prescribed scanning frequency and controlling output of said laser light by said laser light source based on said image data subjected to said processing and said scanning frequency; calculating a position of said external object based on a scanning position of said laser light at a light detection timing of said photodetector; and changing said second image based on calculated said position, defining a region including calculated said position as said designated region, wherein a size of said designated region is larger than a distance of movement of said object in a time interval between changes of said second image.
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9. A non-transitory recording medium having a program stored therein for allowing an image display apparatus to emit laser light, display a first image on a first projection surface, and display a second image on a second projection surface,
said image display apparatus having: -
a laser light source for outputting said laser light, a scanner for scanning said laser light, a light splitting element for splitting said laser light scanned by said scanner into a first laser beam directed to said first projection surface and a second laser beam directed to said second projection surface, and a photodetector for detecting said second laser beam reflected by an external object on said second projection surface, when said program is read out, said program causing a computer to execute; executing processing of increasing luminance of a pixel in a designated region included in image data applied to said computer; allowing said scanner to operate at a prescribed scanning frequency and controlling output of said laser light by said laser light source based on said image data subjected to said processing and said scanning frequency; calculating a position of said external object based on a scanning position of said laser light at a light detection timing of said photodetector; and changing said second image based on calculated said position, defining a region including calculated said position as said designated region, wherein a size of said designated region is larger than a distance of movement of said object in a time interval between changes of said second image.
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Specification