Compensation apparatus and method, display apparatus and working method thereof, storage medium

Patent metadata

Field	Value
Publication number	US-12205535-B2
Application number	US-202218028568-A
Country	US
Kind code	B2
Filing date	Jun 30, 2022
Priority date	Jun 30, 2022
Publication date	Jan 21, 2025
Grant date	Jan 21, 2025

Abstract

A compensation apparatus and method, a display apparatus and a working method thereof, and a storage medium are provided, the compensation apparatus includes a first memory, a first timer and a processor; the first timer starts timing from the processor receiving the pixel data to obtain the first timing information and send the first timing information to the processor; the processor receives the pixel data and the first timing information, compensate the gray-scale data of the pixel data according to the first timing information and the compensation parameters in the pre-term compensation parameter set when the first timing information does not reach the first time node value, compensate the gray-scale data of the pixel data according to the first timing information and the compensation parameters in the mid-term compensation parameter set.

First claim

The invention claimed is:

1. A compensation apparatus, comprising: a first memory, a first timer, and a processor,
wherein the first memory is configured to store a first time node value, a second time node value, a pre-term compensation parameter set, a mid-term compensation parameter set and a post-term compensation parameter set; the first time node value is less than the second time node value, the pre-term compensation parameter set, the mid-term compensation parameter set and the post-term compensation parameter set each comprises at least one compensation parameter and a value of a same compensation parameter in the pre-term compensation parameter set and the post-term compensation parameter set is different from a value of the same compensation parameter in the mid-term compensation parameter set, values of the compensation parameter in the pre-term compensation parameter set are gradually decreased with time, values of the compensation parameter in the post-term compensation parameter set are gradually increased with time;
the first timer is connected with the processor and is configured to: start timing from that pixel data is received by the processor, obtain first timing information, and send the first timing information to the processor, wherein the pixel data comprises gray-scale data; and
the processor is connected with the first timer and the first memory respectively, and is configured to: receive the pixel data and the first timing information, compensate the gray-scale data of the pixel data according to the first timing information and the compensation parameter in the pre-term compensation parameter set based on a determination that the first timing information does not reach the first time node value; compensate the gray-scale data of the pixel data according to the first timing information and the compensation parameter in the mid-term compensation parameter set based on a determination that the first timing information reaches the first time node value and does not reach the second time node value; and compensate the gray-scale data of the pixel data according to the first timing information and the compensation parameter in the post-term compensation parameter set based on a determination that the first timing information reaches the second time node value.

2. The compensation apparatus according to claim 1 , wherein the value of the same compensation parameter in the pre-term compensation parameter set and the post-term compensation parameter set is different from the value of the same compensation parameter in the mid-term compensation parameter set, which comprises: the value of the same compensation parameter in the pre-term compensation parameter set and the post-term compensation parameter set is greater than the value of the same compensation parameter in the mid-term compensation parameter set.

3. The compensation apparatus according to claim 1 , wherein the first memory is further configured to store a third time node value and a maximum compensation parameter set, the third time node value is greater than the second time node value, and the maximum compensation parameter set at least comprises one compensation parameter and a value of the same compensation parameter in the maximum compensation parameter set is greater than the value of the same compensation parameter in the post-term compensation parameter set; and
the processor is further configured to compensate the gray-scale data of the pixel data according to the first timing information and the compensation parameter in the maximum compensation parameter set based on a determination that the first timing information reaches the third time node value.

4. The compensation apparatus according to claim 3 , wherein the first memory is configured to store compensation parameters corresponding to a plurality of time points, and the pre-term compensation parameter set comprises compensation parameters corresponding to a plurality of time points before the first time node value; the mid-term compensation parameter set comprises compensation parameters corresponding to a plurality of time points between the first time node value and the second time node value; the post-term compensation parameter set comprises compensation parameters corresponding to a plurality of time points between the second time node value and the third time node value; the maximum compensation parameter set comprises compensation parameters corresponding to a plurality of time points after the third time node value; and
the processor is configured to search a corresponding time point according to the first timing information, determine a compensation parameter set according to the searched time point, and compensate the gray-scale data of the received pixel data according to a compensation parameter in the determined compensation parameter set corresponding to the searched time point to obtain compensated gray-scale data.

5. The compensation apparatus according to claim 4 , wherein in the pre-term compensation parameter set, a plurality of compensation parameter values of a compensation parameter are gradually decreased according to a sequence of the corresponding time points;
in the mid-term compensation parameter set, parameter values of a compensation parameter are the same;
in the post-term compensation parameter set, a plurality of parameter values of a compensation parameter are gradually increased according to the sequence of corresponding time points; and
in the maximum compensation parameter set, parameter values of a compensation parameter are the same.

6. The compensation apparatus according to claim 4 , wherein the compensation parameters corresponding to the plurality of time points comprise luminance weights and gray-scale weights corresponding to the plurality of time points; and
the processor is configured to: determine a corresponding time point according to the first timing information, determine a corresponding luminance weight and a corresponding gray-scale weight according to the determined time point, multiply the determined luminance weight by the determined gray-scale weight to obtain a compensated gray-scale weight, and obtain compensated gray-scale data according to the gray-scale data in the pixel data and the compensated gray-scale weight.

7. The compensation apparatus according to claim 6 , wherein the processor is configured to multiply the gray-scale data in the pixel data by the compensated gray-scale weight to obtain the compensated gray-scale data.

8. The compensation apparatus according to claim 1 , further comprising a timing memory;
the timing memory is connected with the processor and the first timer, and is configured to store the first timing information of the first timer; and
the first timer is further connected to the timing memory, and is configured to read the first timing information in the timing memory in a case that the processor is restarted after being powered off, and to continue timing based on the first timing information stored in the first memory in a case that the processor is restarted and restarts to receive the pixel data.

9. The compensation apparatus according to claim 1 , further comprising a second timer, a second memory and a temperature sensor;
the second memory is connected with the processor, and is configured to store a temperature threshold, test compensation parameters corresponding to a plurality of time points, a high gray-scale threshold and a low gray-scale threshold;
the temperature sensor is connected with the processor, and is configured to acquire temperature information and transmit the temperature information to the processor;
the second timer is connected with the processor, and is configured to perform

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Jing Tan
• Tian Xuesong
• Jin Shanchuan
• Li Shiming
• Lee Eunho

Classifications

• G09G2320/0242

  Compensation of deficiencies in the appearance of colours · CPC title

• G09G3/3225

  using an active matrix · CPC title

• G09G3/20

  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 Primary

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