Projector
AssigneeNEC Viewtechnology, Ltd.
InventorsKazuo Mochizuki, Hisakazu Aoyanagi, Daisuke Moriwaki
Life of this patent
Estimating the term…
Abstract
An image sensor is installed in the vicinity of a projection lens. The image sensor images a projected and displayed image and a screen. A projection display area and a screen area are detected from the image imaged by the image sensor. An inputted image data is corrected so that the projection display area matches the screen area. The image to be displayed is automatically displayed in a shape, which matches a display surface of the screen.
Claims33
A projector, comprising an image display portion and a projection lens for projecting an image displayed on said image display portion on a screen,
- said projector, further comprising;
- an image sensor which is placed in the vicinity of said projection lens and images the projected and displayed image and said screen;
- means for detecting a projection display area from the image imaged by said image sensor;
- means for detecting a screen area from the image imaged by said image sensor;
- and
- means for correcting an inputted image data so that said projection display area matches said screen area.
An image distortion correction method of a projector which projects an image displayed on an image display portion on a screen, comprising the steps of:
- imaging said screen by an image sensor installed in the vicinity of said projection lens;
- detecting the area of said screen from an imaged screen image;
- and
- correcting an inputted image so that the projection display area previously detected matches said screen area.
A projector, comprising an image display portion and a projection lens for projecting an image displayed on said image display portion to a screen,
- said projector further comprising:
- an image sensor for imaging a projected and displayed image and said screen;
- means for calculating a distance between a plurality of points inside the projected and displayed image and said projector from the image imaged by said image sensor;
- means for detecting a positional relationshipb etween said projector and said screen from said distance;
- and
- means for correcting an inputted image data based said positional relationship so as to display the image on said screen in an object shape.
Dependencies are inferred from the claim text.