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US 2004/0169827 A1Published application
Projection display apparatus
OwnerMitsuo Kubo, Masaru Watanabe +1inventors
InventorsMitsuo Kubo, Masaru Watanabe, Hiroshi Hayashi
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OwnerMitsuo Kubo, Masaru Watanabe +1inventors
InventorsMitsuo Kubo, Masaru Watanabe, Hiroshi Hayashi
Estimating the term…
A projection display apparatus employs a plurality of projectors 1, 2, 3 and combines images from the projectors into a large composite image on a nonplanar screen such as a concave spherical screen 10. The composite image is of high quality and high resolution and is normally visible by audience. The projectors 1, 2, 3 receive video signals through a geometric conversion unit and project and display images on the nonplanar screen 10 according to the received video signals. The geometric conversion unit transforms the field angles of images to display, according to relationships among the positions of the projectors 1, 2, 3, the positions of areas of the nonplanar screen 10 to which the projectors project images, and the position of an audience, thereby compensating distortions of images caused by the nonplanar shape of the screen 10.
A projection display apparatus comprising:
An adjusting apparatus for adjusting an image transforming quantity of the image transforming, employed for a projection display apparatus having projection display units for projecting and displaying images according to supplied video signals, a nonplanar screen to which the projection display units project the images, and image transforming means for changing the field angle of images to display according to relationships of the position of the projection display units, the position of areas of the nonplanar screen to which the projection display units project the images, and the position of an audience, comprising:
Dependencies are inferred from the claim text.