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1. (EP3104221) PROJECTOR AND IMAGE DISPLAY METHOD
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Claims

1. A projector comprising:

a light source;

image forming means that includes a pixel area which is configured of a plurality of pixels, the plurality of pixels modulating light that is emitted from the light source based on an input video signal to form an image;

projecting means that projects the image that is formed by the image forming means; and

control means that controls an image forming operation of the image forming means,

wherein the control means forms a frame image by sequentially forming a plurality of images in which a combined pixel which is configured of a plurality of pixels is used as a pixel unit, and
wherein, with respect to temporally continuous two images from among the plurality of images, the control means forms one image at a position that is shifted by a distance that corresponds to a pixel pitch of the pixel area in a predetermined direction relative to the other image.
  2. The projector according to Claim 1, wherein the combined pixel is four pixels arranged in two rows and two columns, and the predetermined direction is a row direction and a column direction.
  3. The projector according to Claim 1 or 2, wherein the projecting means includes a projection lens having an MTF value, the MTF value being less than a predetermined value relative to a spatial frequency that is determined by a size of the pixel of the pixel area and being equal to or greater than the predetermined value relative to a spatial frequency that is determined by a size of the combined pixel.
  4. The projector according to Claim 3, wherein the predetermined value is 50%.
  5. The projector according to any one of Claims 1 to 4, wherein a part of the pixel area includes a back display area for displaying black.
  6. The projector according to Claim 5, wherein the control means forms the frame image in the area other than the black display area in the pixel area.
  7. The projector according to any one of Claims 1 to 6, wherein:

the input video signal is a signal that represents an image having the same pixel count as the pixel area;

the control means generates, from the input video signal, a plurality of image signals that represent the plurality of images, respectively; and

the image forming means forms the plurality of images in a time-divisional manner based on the plurality of image signals.


  8. An image displaying method implemented in a projector that includes a display panel, that forms an image by modulating light emitted from a light source based on an input video signal, and that projects an image that is formed by the display panel to a projected surface, the image displaying method comprising:

displaying a frame image by sequentially forming, by the display panel, a plurality of images in which a combined pixel which is configured of a plurality of pixels is used as a pixel unit; and

with respect to temporally continuous two images from among the plurality of images, forming one image at a position that is shifted by a distance that corresponds to a pixel pitch of the display panel in a predetermined direction relative to the other image.
  9. The image displaying method according to Claim 8, wherein the combined pixel is four pixels that are arranged in two rows and two columns, and the predetermined direction is a row direction and a column direction.
  10. The image displaying method according to Claim 8 or 9, further comprising using a projection lens having an MTF value to project the image that is formed by the display panel, the MTF value being less than a predetermined value relative to a spatial frequency that is determined by a size of the pixel of the display panel and being equal to or greater than the predetermined value relative to a spatial frequency that is determined by a size of the combined pixel.
  11. The image displaying method according to Claim 10, wherein the predetermined value is 50%.
  12. The image displaying method according to any one of Claims 8 to 11, wherein the display panel has a pixel area, a part of the pixel area being formed by a back display area for displaying black, and the frame image is formed in the entire pixel area.
  13. The image displaying method according to any one of Claims 8 to 11, wherein the display panel has a pixel area, a part of the pixel area being formed by a back display area for displaying black, and the frame image is formed in an area other than the black display area in the pixel area.
  14. The image displaying method according to any one of Claims 8 to 13, wherein the input video signal is a signal that represents an image having the same pixel count as the pixel area, the image displaying method further comprising:

generating, from the input video signal, a plurality of image signals that represent the plurality of images, respectively; and

causing the display panel to form the plurality of images in a time-divisional manner based on the plurality of image signals.