Display system for virtual reality and method of driving the same

Patent metadata

Field	Value
Publication number	US-10558046-B2
Application number	US-201715607157-A
Country	US
Kind code	B2
Filing date	May 26, 2017
Priority date	May 31, 2016
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

A display system for virtual reality and a method of driving the same are disclosed. In the display system for virtual reality, auxiliary image data, the number of which is smaller than the number of auxiliary sub pixels disposed in an auxiliary view region, is transmitted to a display device and the same auxiliary image data is supplied to sub-pixels of an auxiliary view region in which a user eye is not accurately focused. Accordingly, the display system for virtual reality reduces a volume of auxiliary image data supplied to the auxiliary view region to overcome latency.

First claim

What is claimed is:

1. A display system for virtual reality, comprising:
a display device comprising a display panel having a main view region comprising a plurality of main view region pixels and an auxiliary view region comprising a plurality of auxiliary view region pixels, wherein the main view region receives main content data and the auxiliary view region receives auxiliary content data; and
a content providing device configured to transmit the main content data corresponding to the plurality of main view region pixels and to transmit a subset of the auxiliary content data corresponding to a number smaller than the plurality of auxiliary view region pixels,
wherein the display device supplies the subset of the auxiliary content data to a plurality of neighbor auxiliary view region pixels and performs blurring on the auxiliary view region to reduce a volume of the auxiliary content data supplied to the auxiliary view region to overcome latency, and
wherein coordinate information of the main view region and the auxiliary view region is calculated through a total number of horizontal pixels of the main view region {y 1 /(y 1 +y 2 )}×H and a total number of horizontal pixels of the auxiliary view region {y 2 /(y 1 +y 2 )}×H,
where y 1 =x tan θ 1 , y 2 =(x tan θ 2 )−y 1 , x is a distance to a user eye from a central sub-pixel of the display panel, θ 1 is half of a main viewing angle at which a focal point is formed when a user eye is directed to a front of the display panel, θ 2 is an angle between an imaginary line to a user eye from the central sub-pixel of the display panel and an imaginary inclined line to the user eye from an outermost sub-pixel of the display panel, y 1 is a horizontal distance of the display panel corresponding to half of the main view region, y 2 is a horizontal distance of the display panel corresponding to half of the auxiliary view region, and H is a total number of pixels arranged in a horizontal direction of the display panel.

2. The display system for virtual reality according to claim 1 , wherein the content providing device classifies original content data into the main content data corresponding to the plurality of main view region pixels and the auxiliary content data corresponding to the plurality of auxiliary view region pixels, wherein the content providing device extracts the subset of auxiliary content data, and transmits the extracted auxiliary content data to the display device.

3. The display system for virtual reality according to claim 1 , wherein the content providing device comprises:
a data classifier configured to classify original content data into the main content data, corresponding to a number of the main view region pixels, and the auxiliary content data, corresponding to a number of the auxiliary view region pixels, and
a data extractor configured to extract the subset of auxiliary content data, from the classified auxiliary content data, and to transmit the extracted subset of auxiliary content data and the main content data to the display device.

4. The display system for virtual reality according to claim 3 , wherein the data extractor extracts a subset of a plurality of average data from the classified auxiliary content data and transmits the extracted subset of a plurality of average data to the display device.

5. The display system for virtual reality according to claim 4 , wherein the subset of the plurality of average data includes data for at least one region of four pixels, and the data extractor extracts one piece of average data from the data for at least one region of four pixels.

6. The display system for virtual reality according to claim 2 , wherein the display device comprises:
a panel driver configured to drive the display panel; and
an image processor configured to duplicate the extracted subset of auxiliary content data, wherein the duplicated auxiliary content data corresponds to a number of auxiliary view region pixels in the auxiliary view region and the image processor supplies the duplicated subset of auxiliary content data and the main content data to the panel driver.

7. The display system for virtual reality according to claim 6 , wherein the auxiliary view region is disposed adjacent to an upper side, a lower side, a right side and a left side of the main view region.

8. The display system for virtual reality according to claim 2 , wherein:
in the display panel, a plurality of auxiliary view region pixels adjacently disposed in the auxiliary view region share one data line; and the display device supplies the subset of the auxiliary content data to the adjacent plurality of auxiliary view region pixels through the shared data line.

9. The display system for virtual reality according to claim 8 , wherein the auxiliary view region is disposed adjacent to a right side and a left side of the main view region.

10. A method of driving a display system comprising a display panel having a main view region with a plurality of main view region pixels and an auxiliary view region with a plurality of auxiliary view region pixels, the method comprising:
transmitting main content data corresponding to the plurality of main view region pixels arranged in the main view region and a subset of auxiliary content data corresponding to the plurality of auxiliary view region pixels to the display device, wherein the subset of auxiliary content data is smaller than the plurality of auxiliary view region pixels disposed in the auxiliary view region; and
supplying the subset of auxiliary content data to the plurality of auxiliary view region pixels of the display device,
wherein the display system performs blurring on the auxiliary view region to reduce a volume of the auxiliary content data supplied to the auxiliary view region to overcome latency, and
wherein coordinate information of the main view region and the auxiliary view region is calculated through a total number of horizontal pixels of the main view region {y 1 /(y 1 +y 2 )}×H and a total number of horizontal pixels of the auxiliary view region {y 2 /(y 1 +y 2 )}×H,
where y1=x tan θ1, y2=(x tan θ2)−y1, x is a distance to a user eye from a central sub-pixel of the display panel, θ1 is half of a main viewing angle at which a focal point is formed when a user eye is directed to a front of the display panel, θ2 is an angle between an imaginary line to a user eye from the central sub-pixel of the display panel and an imaginary inclined line to the user eye from an outermost sub-pixel of the display panel, y1 is a horizontal distance of the display panel corresponding to half of the main view region, y2 is a horizontal distance of the display panel corresponding to half of the auxiliary view region, and H is a total number of pixels arranged in a horizontal direction of the display panel.

11. The method according to claim 10 , wherein the transmitting comprises:
classifying original content data into the main content data corresponding to the plurality of main view region pixels and auxiliary content data corresponding to the plurality of auxiliary view region pixels;
extracting the subset of auxiliary content data, from the classified auxiliary content data, wherein the subset of the auxiliary content data is smaller than the plurality of auxiliary view region pixels; and
transmitting the extracted subset of auxiliary content data to the display device.

12. The method according to claim 11 , wherein the supplying further comprises:
duplicating the extracted subset of auxiliary content data to correspond to a number of the auxiliary view region pixels; and
supplying the duplicated subset of auxiliary content data to the display device.

Assignees

• Lg Display Co Ltd

Inventors

• Jang Jun-Woo

Classifications

• G09G3/36 Primary

  using liquid crystals · CPC title

• G06F3/013

  Eye tracking input arrangements (G06F3/015 takes precedence) · CPC title

• G02B27/0172 Primary

  characterised by optical features · CPC title

• G02F1/136209

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title

• G09G3/3208

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title