Compensation method and compensation device for VR display and display device

Patent metadata

Field	Value
Publication number	US-11302280-B2
Application number	US-201917254981-A
Country	US
Kind code	B2
Filing date	Dec 25, 2019
Priority date	Jan 2, 2019
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

A compensation method for VR display, a compensation device for VR display, and a display device are provided. The compensation method for VR display includes: calculating a first synchronization signal value to be output by a controller according to a rendering resolution, a rendering frame rate and bandwidth data of a display panel; comparing the first synchronization signal value with a pre-stored second synchronization signal value of the display panel; generating compensation image data between two adjacent frames of original image data in a case where a comparison result shows that the first synchronization signal value is greater than the second synchronization signal value; and compensating an image to be displayed according to generated compensation image data.

First claim

What is claimed is:

1. A compensation method for VR display, comprising:
calculating a first synchronization signal value to be output by a controller according to a rendering resolution, a rendering frame rate and bandwidth data of a display panel;
comparing the first synchronization signal value with a pre-stored second synchronization signal value of the display panel;
generating compensation image data between two adjacent frames of original image data in a case where a comparison result shows that the first synchronization signal value is greater than the second synchronization signal value; and
compensating an image to be displayed according to generated compensation image data.

2. The compensation method for VR display according to claim 1 , wherein the compensation image data between two adjacent frames of original image data that is generated in the case where the comparison result shows that the first synchronization signal value is greater than the second synchronization signal value is one frame of compensation image data;
the two adjacent frames of original image data are an N-th frame of original image data and an (N+1)-th frame of original image data, respectively, where N is an integer greater than or equal to 1;
the generating compensation image data between two adjacent frames of original image data comprises:
acquiring estimated compensation image data according to the N-th frame of original image data and a preset number of frames of original image data that are continuous and previous to the N-th frame of original image data; and
calculating a compensation matrix according to an image acceleration of the N-th frame of original image data and the estimated compensation image data, thereby acquiring final compensation image data.

3. The compensation method for VR display according to claim 1 , wherein the compensation image data between two adjacent frames of original image data that is generated in the case where the comparison result shows that the first synchronization signal value is greater than the second synchronization signal value is a plurality of frames of compensation image data;
the two adjacent frames of original image data are an N-th frame of original image data and an (N+1)-th frame of original image data, respectively, where N is an integer greater than or equal to 1;
the generating compensation image data between two adjacent frames of original image data comprises:
acquiring a first frame of estimated compensation image data according to the N-th frame of original image data and a preset number of frames of original image data that are continuous and previous to the N-th frame of original image data;
calculating a compensation matrix of the first frame of estimated compensation image data according to an image acceleration of the N-th frame of original image data and the first frame of estimated compensation image data, thereby acquiring a first frame of final compensation image data;
acquiring an (M+1)-th frame of estimated compensation image data according to an M-th frame of final compensation image data and a preset number of frames of image data that are continuous and previous to the M-th frame of final compensation image data, where M is an integer greater than or equal to 1; and
calculating a compensation matrix of the (M+1)-th frame of estimated compensation image data according to an image acceleration of the M-th frame of final compensation image data and the (M+1)-th frame of estimated compensation image data, thereby acquiring an (M+1)-th frame of final compensation image data.

4. The compensation method for VR display according to claim 1 , wherein a number of frames of the generated compensation image data is positively correlated with a difference between the first synchronization signal value and the second synchronization signal value.

5. The compensation method for VR display according to claim 1 , wherein the calculating a first synchronization signal value to be output by a controller according to a rendering resolution, a rendering frame rate and bandwidth data of a display panel comprises:
acquiring the rendering resolution, the rendering frame rate and the bandwidth data of the display panel;
calculating a rendering bandwidth according to the rendering resolution and the rendering frame rate of the display panel; and
calculating the first synchronization signal value to be output by the controller according to a formula of 1/B+A×24/(A−C), where A is the rendering bandwidth, B is the rendering frame rate, and C is the bandwidth data of the display panel.

6. The compensation method for VR display according to claim 5 , wherein the calculating a rendering bandwidth according to the rendering resolution and the rendering frame rate of the display panel comprises: calculating a product of the rendering resolution and the rendering frame rate as the rendering bandwidth.

7. The compensation method for VR display according to claim 1 , wherein the second synchronization signal value is a fixed value of the display panel when the display panel leaves factory.

8. A dynamic compensation device for VR display, comprising: at least one central processing unit (CPU) or at least one application processor (AP), and a memory having at least one computer program stored therein, wherein the at least one computer program, when executed by the at least one CPU or the at least one AP, causes the at least one CPU or the at least one AP to function as a calculation unit, a comparison unit, a compensation image data generation unit, and a compensation unit;
the calculation unit is configured to calculate a first synchronization signal value to be output by a controller according to a rendering resolution, a rendering frame rate and bandwidth data of a display panel;
the comparison unit is configured to compare the first synchronization signal value with a pre-stored second synchronization signal value of the display panel;
the compensation image data generation unit is configured to generate compensation image data between two adjacent frames of original image data in a case where a result of comparison by the comparison unit shows that the first synchronization signal value is greater than the second synchronization signal value; and
the compensation unit is configured to compensate an image to be displayed according to the compensation image data generated by the compensation image data generation unit.

9. The dynamic compensation device for VR display according to claim 8 , wherein the compensation image data generation unit comprises an estimation sub-unit, a compensation matrix calculation sub-unit, and a compensation image data generation sub-unit.

10. The dynamic compensation device for VR display according to claim 9 , wherein the compensation image data between two adjacent frames of original image data that is generated by the compensation image data generation unit in the case where the result of comparison by the comparison unit shows that the first synchronization signal value is greater than the second synchronization signal value is one frame of compensation image data;
the two adjacent frames of original image data are an N-th frame of original image data and an (N+1)-th frame of original image data, respectively, where N is an integer greater than or equal to 1;
the estimation sub-unit is configured to acquire estimated compensation image data according to the N-th frame of original image data and a preset number of frames of original image data that are continuous and previous to the N-th frame of original image data;
the compensation matrix calculation sub-unit is configured to calculate a compensation matrix according to an image acceleration

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Suo Jianwen
• Xu Jingtao
• Wang Xuefeng
• Li Wenyu
• Miao Jinghua
• Wang Yakun
• Peng Jinbao
• Zhao Bin
• Li Zhifu
• Li Xi
• Fan Qingwen
• Sun Yukun
• Zhang Hao
• Chen Lili

Classifications

• G09G2350/00

  Solving problems of bandwidth in display systems · CPC title

• G09G5/005 Primary

  Adapting incoming signals to the display format of the display terminal · CPC title

• G09G2340/0435

  Change or adaptation of the frame rate of the video stream · CPC title

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G09G3/3208

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