Projection type table display
First Claim
1. A projection type display comprising:
- an image processing unit for processing an input image;
an illumination optical block for radiating an optical beam;
a liquid crystal panel for modulating the optical beam radiated from said illumination optical block with an output signal from said image processing unit and outputting the modulated optical beam; and
a projection lens block for projecting the modulated optical beam output from said liquid crystal panel upon a projection object,wherein said image processing unit comprises;
a first image rotation unit for rotating the input image by a first angle;
a second image rotation unit for rotating the input image by a second angle;
a two-image synthesizing unit for synthesizing a first output image from said first image rotation unit and a second output image from said second image rotation unit into one image;
said first image rotation unit or said second image rotation unit executes a scaling process including magnification and reduction of an input image; and
said first image rotation unit or said second image rotation unit executes a scaling process including magnification, reduction and geometrical distortion correction of an output image from said two-image synthesizing unit.
5 Assignments
0 Petitions
Accused Products
Abstract
In the usage of table projection of a projection type display, depending upon a sitting position of a participant of a conference, the participant views an image projected upon a table as an inversion image turned upside down, resulting in poor visual recognition. In order to improve visual recognition, images are rotated, synthesized and displayed in accordance with the viewing direction of each participant. More specifically, the projection type display is provided with a two-image synthesizing unit for synthesizing two images obtained by processing an input image by two image rotation units for rotating the input image by a first angle and a second angle different from the first angle, into one image on a screen. The projection type display is also provided with an image rotation unit and an image inversion unit for two-image display on a screen.
7 Citations
11 Claims
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1. A projection type display comprising:
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an image processing unit for processing an input image; an illumination optical block for radiating an optical beam; a liquid crystal panel for modulating the optical beam radiated from said illumination optical block with an output signal from said image processing unit and outputting the modulated optical beam; and a projection lens block for projecting the modulated optical beam output from said liquid crystal panel upon a projection object, wherein said image processing unit comprises; a first image rotation unit for rotating the input image by a first angle; a second image rotation unit for rotating the input image by a second angle; a two-image synthesizing unit for synthesizing a first output image from said first image rotation unit and a second output image from said second image rotation unit into one image; said first image rotation unit or said second image rotation unit executes a scaling process including magnification and reduction of an input image; and said first image rotation unit or said second image rotation unit executes a scaling process including magnification, reduction and geometrical distortion correction of an output image from said two-image synthesizing unit. - View Dependent Claims (2, 3)
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4. A projection type display comprising:
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an image processing unit for processing an input image; an illumination optical block for radiating an optical beam; a liquid crystal panel for modulating the optical beam radiated from said illumination optical block with an output signal from said image processing unit and outputting the modulated optical beam; and a projection lens block for projecting the modulated optical beam output from said liquid crystal panel upon a projection object, wherein said image processing unit comprises; a first image rotation unit for rotating the input image by a first angle; a second image rotation unit for rotating the input image by a second angle; a two-image synthesizing unit for synthesizing a first output image from said first image rotation unit and a second output image from said second image rotation unit into one image; and said two-image synthesizing unit executes a scaling process including magnification and reduction of a first output image from said first image rotation unit and a second output image from said second image rotation unit, respectively, and thereafter, performs image synthesis. - View Dependent Claims (5)
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6. A projection type display comprising:
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an image processing unit for processing an input image; an illumination optical block for radiating an optical beam; a liquid crystal panel for modulating the optical beam radiated from said illumination optical block with an output signal from said image processing unit and outputting the modulated optical beam; a projection lens block for projecting the modulated optical beam output from said liquid crystal panel upon a projection object, and an operation unit for receiving a user operation; wherein said image processing unit comprises; a first image rotation unit for rotating the input image by a first angle; a second image rotation unit for rotating the input image by a second angle; and a two-image synthesizing unit for synthesizing a first output image from said first image rotation unit and a second output image from said second image rotation unit into one image; if an optical beam output from said projection lens block is projected upon a generally vertical flat plane of the projection object, one image on a screen is output from said image processing unit; and in response to a signal from said operation unit, an output image from said image processing unit is switched between an output image of one image on a screen and an output image of two images on a screen.
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7. A projection type display comprising:
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an image processing unit for processing an input image; an illumination optical block for radiating an optical beam; a liquid crystal panel for modulating the optical beam radiated from said illumination optical block with an output signal from said image processing unit and outputting the modulated optical beam; a projection lens block for projecting the modulated optical beam output from said liquid crystal panel upon a projection object, and an angle sensor for detecting an installation angle of said projection type display or a posture angle of said projection type display, or for detecting an angle of said projection lens block or an angle of an optical beam output from said projection lens block; wherein said image processing unit comprises; a first image rotation unit for rotating the input image by a first angle; a second image rotation unit for rotating the input image by a second angle; and a two-image synthesizing unit for synthesizing a first output image from said first image rotation unit and a second output image from said second image rotation unit into one image; if an optical beam output from said projection lens block is projected upon a generally vertical flat plane of the projection object, one image on a screen is output from said image processing unit; and in response to a signal from said angle sensor, an output image from said image processing unit is switched between an output image of one image on a screen and an output image of two images on a screen.
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8. A projection type display for optically modulating an optical beam from a light source with image information and projecting the modulated optical beam, comprising:
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an image rotation unit for executing a 90-degree rotation process for an input image; an image inversion unit for inverting image information upside down; an image memory for memorizing processing results by said image rotation unit and by said image inversion unit to store the image information; a drive circuit for reading the image information from said image memory to control the optical modulation; a liquid crystal panel for performing the optical modulation of the optical beam; a projection lens block for magnifying and displaying the modulated optical beam; and a user position detection unit for detecting a position of a user viewing a display image by the projection type display; wherein in accordance with a detection result of said user position detection unit, said image rotation unit or said image inversion unit processes the input image to perform two-image display along an up-down direction or two-image display side by side along a right/left direction. - View Dependent Claims (9, 10)
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11. A projection type display for optically modulating an optical beam from a light source with image information and projecting the modulated optical beam, comprising:
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an image rotation unit for executing a 90-degree rotation process for an input image; an image inversion unit for inverting image information upside down; an image memory for memorizing processing results by said image rotation unit and by said image inversion unit to store the image information; a drive circuit for reading the image information from said image memory to control the optical modulation; a liquid crystal panel for performing the optical modulation of the optical beam; a projection lens block for magnifying and displaying the modulated optical beam; and a user position detection unit for detecting a position of a user viewing a display image by the projection type display; wherein in accordance with a detection result of said user position detection unit, said image rotation unit or said image inversion unit processes the input image so as to display an erection image as viewed by a user.
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Specification