Image display apparatus and image display method

Patent metadata

Field	Value
Publication number	US-9406111-B2
Application number	US-201514594820-A
Country	US
Kind code	B2
Filing date	Jan 12, 2015
Priority date	Nov 12, 2007
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

An image display apparatus that displays an image on the basis of input image signals corresponding to sub-pixels forming one pixel includes a shift-amount storing unit that stores shift amounts of display positions of the sub-pixels relative to given reference positions in a display image, an image-signal correcting unit that corrects the input image signals according to the shift amounts, and an image display unit that displays an image on the basis of the image signals corrected by the image-signal correcting unit.

First claim

What is claimed is:

1. A projector comprising:
a projecting unit configured to project a first image of a first color and a second image of a second color;
a measuring unit configured to acquire first imaging data by imaging the first image projected by the projecting unit, and acquire second imaging data by imaging the second image projected by the projecting unit; and
an image-signal correcting unit configured to correct image signals of the first image based on the first imaging data and the second image data to reduce the displacement of the first image.

2. The projector of claim 1 , wherein
the projecting unit is configured to project a third image of a third color,
the measuring unit is configured to acquire third imaging data by imaging the third image projected by the projecting unit, and
the image-signal correcting unit is configured to correct image signals of the first image based additionally on the third imaging data to reduce displacement of the first image.

3. The projector of claim 1 , wherein the image-signal correcting unit is configured to correct the image signals of the first image by interpolation processing.

4. The projector of claim 1 , further comprising a zoom-state detecting unit that is configured to detect a zoom state of the images displayed by the projecting unit.

5. The projector of claim 1 , further comprising a storing unit that is configured to store a first displacement amount of the first image, and store a second displacement amount of the second image.

6. The projector of claim 1 , wherein
the storing unit is configured to store a third displacement amount of a third image, and
the image-signal correcting unit is configured to correct image signals of the third image according to the third displacement amount to reduce the displacement of the third image.

7. The projector of claim 1 , wherein
the image-signal correcting unit is configured to correct image signals of the first image based on calculated shift amounts relative to given reference positions of the projected first image.

Assignees

• Seiko Epson Corp

Inventors

• Aragaki Takumi
• Hasegawa Hiroshi

Classifications

• H04N9/3194

  including sensor feedback · CPC title

• G02B27/285

  comprising arrays of elements, e.g. microprisms · CPC title

• G09G2340/10

  Mixing of images, i.e. displayed pixel being the result of an operation, e.g. adding, on the corresponding input pixels · CPC title

• G02B27/1046

  for use with transmissive spatial light modulators · CPC title

• G02B27/145

  having sequential partially reflecting surfaces · CPC title