US 2010/0245685 A1 · PROJECTION TYPE TABLE DISPLAY

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.

Claims16

Dependent claims

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;
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.

7 more elements

A projection type display for optically modulating an optical beam from a light source with image information and projecting the modulated optical beam, comprising:

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;
and
a projection lens block for magnifying and displaying the modulated optical beam.

4 more elements

Dependencies are inferred from the claim text.

Projection type table display

Life of this patent

Projection type table display

Life of this patent

Abstract

Claims16