Projection display apparatus, display method for same and image display apparatus
First Claim
1. A projection display apparatus that projects images onto a screen responsive to given image data, comprising:
- an image extraction section that extracts at least a portion of given first image data as an extraction image;
an extraction image memory for storing extraction image data representing the extraction image;
an image overlay section that generates overlaid image data by superimposing the extraction image on original image represented by given second image data;
a light modulation unit that is driven responsive to the overlaid image data pixel by pixel; and
an optical system for projecting onto the screen the overlaid image obtained by the light modulation unit.
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Abstract
The present invention provides a technology that enables related portions of multiple pages of images to be displayed simultaneously. A projection display apparatus comprises: an image extraction section that extracts at least a portion of given first image data as an extraction image; an extraction image memory for storing extraction image data representing the extraction image; an image overlay section that generates overlaid image data by superimposing the extraction image on an original image represented by given second image data; a light modulation unit that is driven responsive to the overlaid image data pixel by pixel; and an optical system for projecting onto the screen the overlaid image obtained by the light modulation unit. A projection display apparatus can display related portions of multiple pages of images simultaneously.
23 Citations
23 Claims
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1. A projection display apparatus that projects images onto a screen responsive to given image data, comprising:
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an image extraction section that extracts at least a portion of given first image data as an extraction image;
an extraction image memory for storing extraction image data representing the extraction image;
an image overlay section that generates overlaid image data by superimposing the extraction image on original image represented by given second image data;
a light modulation unit that is driven responsive to the overlaid image data pixel by pixel; and
an optical system for projecting onto the screen the overlaid image obtained by the light modulation unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11-21. -21. (canceled)
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22. A method of displaying images using a projection display apparatus having a light modulation unit to display an image based on image data given to the projection display apparatus by projecting the image on a screen, comprising the steps of:
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extracting at least a portion of given first image data as an extraction image;
preparing extraction image data representing the extraction image;
generating overlaid image data by superimposing the extraction image on an original image represented by given second image data;
driving light modulation unit responsive to the overlaid image data pixel by pixel basis; and
projecting onto a screen overlaid images obtained by the light modulation unit.
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23-24. -24. (canceled)
Specification