Display system with image deformation processing

Patent metadata

Field	Value
Publication number	US-12100365-B2
Application number	US-202318223204-A
Country	US
Kind code	B2
Filing date	Jul 18, 2023
Priority date	Feb 1, 2021
Publication date	Sep 24, 2024
Grant date	Sep 24, 2024

Abstract

A display system includes a display device including a liquid crystal display panel including pixels, the pixels each including a plurality of sub pixels and being arranged in a matrix of rows and columns in a first direction and a second direction different from the first direction, and an image generation device including a control circuit configured to perform image deformation processing of an input image in accordance with a pixel structure of the liquid crystal display panel. The image generation device and the display device are coupled to each other through wired or wireless communication, and the control circuit generates pixel values of all the sub pixels of the liquid crystal display panel in the image deformation processing.

First claim

What is claimed is:

1. A display system comprising:
a display device including a liquid crystal display panel including pixels, the pixels each including a plurality of sub pixels and being arranged in a matrix of rows and columns in a first direction and a second direction different from the first direction; and
an image generation device including a control circuit configured to perform image deformation processing of an input image in accordance with a pixel structure of the liquid crystal display panel, wherein
the image generation device and the display device are coupled to each other through wired or wireless communication,
the control circuit generates pixel values of all the sub pixels of the liquid crystal display panel in the image deformation processing the display device includes a lens that enlarges an image displayed on the liquid crystal display panel,
in the image deformation processing, the control circuit compensates at least geometric image distortion due to aberration of the lens and deforms the input image into a shape to be visually recognized by a user,
the input image includes color data corresponding to colors of the sub pixels for each of a plurality of data definition points virtually disposed in a matrix of rows and columns in the first direction and the second direction, and
in the image deformation processing, the control circuit generates a pixel value of each of the sub pixels by sampling the color data at one or more of the data definition points.

2. The display system according to claim 1 , wherein the control circuit generates the pixel value of each of the sub pixels in accordance with disposition of the data definition points after moved by the image deformation processing.

3. The display system according to claim 2 , wherein in the image deformation processing, the control circuit performs sampling for each sub pixel by using an area averaging method.

4. The display system according to claim 2 , wherein in the image deformation processing, the control circuit performs sampling for each sub pixel by using a multipoint averaging method.

5. The display system according to claim 4 , wherein a plane-filling figure when the sampling for each sub pixel is performed by using the multipoint averaging method has a rhombus shape expressed by vectors in two directions different from the first direction and the second direction.

6. The display system according to claim 1 , wherein
the image generation device includes a storage, and
in the image deformation processing, the control circuit calculates the pixel values based on a coordinate transform table stored in the storage.

7. The display system according to claim 6 , wherein the control circuit generates the coordinate transform table by using a polygon mesh and stores the coordinate transform table in the storage.

8. The display system according to claim 7 , wherein the control circuit generates a plurality of the coordinate transform tables in accordance with relative positions of the plurality of sub pixels.

9. The display system according to claim 8 , wherein the control circuit generates the coordinate transform tables in accordance with an image magnification of the lens for each sub pixel.

10. The display system according to claim 6 , wherein the coordinate transform tables include individual data corresponding to all the sub pixels of the liquid crystal display panel.

11. The display system according to claim 6 , wherein the coordinate transform tables apply same data to a plurality of pixel blocks each constituted by one or a plurality of the pixels.

12. The display system according to claim 1 , wherein the number of colors of sub pixels included in each pixel is smaller than the number of colors defined for the input image.

13. The display system according to claim 1 , wherein resolution of the liquid crystal display panel is different from resolution of the input image.

Assignees

• Japan Display Inc

Inventors

• Watanabe Yoshihiro

Classifications

• G09G2340/0464

  Positioning · CPC title

• G09G2340/0457

  Improvement of perceived resolution by subpixel rendering · CPC title

• G09G2340/045

  Zooming at least part of an image, i.e. enlarging it or shrinking it · CPC title

• G09G3/3648

  using an active matrix (G09G3/367 - G09G3/3696 take precedence) · CPC title

• G09G3/2074 Primary

  using sub-pixels · CPC title