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US 12,183,305 B2Granted
Display apparatus and timing controller thereof
AssigneeLx Semicon Co., Ltd.
InventorYoung Jun Jun
Life of this patent
Estimating the term…
Abstract
A display apparatus and a timing controller thereof is disclosed. The timing controller detects a size of an image by using image data, generates first output image data according to the size of the image, and generates second output image data by using the first output image data. The second output image data is generated according to a saturation value of the first output image data.
Claims18
A display apparatus comprising a timing controller converting image data inputted from an external into output image data,
- wherein the timing controller configured to:
- generating an on-pixel ratio information corresponding to a size of image on a screen by using the image data;
- selecting a first weight approximating the on-pixel ratio information in a lookup table having weights for compensation according to the size of the image on the screen;
- generating a second weight corresponding to the on-pixel ratio information by converting the first weight;
- converting the image data into first output image data by using the second weight;
- converting the first output image data into second output data image by controlling a degree to which the second weight is applied to a saturation value corresponding to the first output image data according to a saturation weight corresponding to the first output image data;
- and
- outputting the second output image data as the output image data,
- wherein the timing controller configured to include an on-pixel ratio generator which generates the on-pixel ratio information including an average picture level factor and a weighted average picture level for the screen and each of color by using the image data, and
- wherein the on-pixel ratio generator configured to:
- generate the average picture level factor for sub-pixels corresponding to each of colors;
- and
- generate the weighted average picture level by dividing the sum of the square values of the grayscale values for sub-pixels corresponding to each of colors by the sum of the grayscale values.
10 more elements
A timing controller of a display apparatus comprising:
- an on-pixel ratio generator configured to receive image data inputted from an external and generating an on-pixel ratio information corresponding to a size of image on a screen by using the image data;
- a storage configured to store a lookup table having weights for compensation according to the size of the image on the screen;
- a weight generator configured to receive a first weight approximating the on-pixel ratio information among the weights of the lookup table and generate a second weight corresponding to the on-pixel ratio information by converting the first weight;
- a first image data generator configured to convert the image data into first output image data by using the second weight;
- and
- a second image data generator configured to convert the first output image data into second output image data by controlling a degree to which the second weight is applied to a saturation value corresponding to the first output image data according to a saturation weight corresponding to the first output image data, and output the second output image data as an output image data,
- wherein the on-pixel ratio generator configured to:
- generates the on-pixel ratio information including an average picture level factor and a weighted average picture level for the screen and each of color by using the image data;
- generate the average picture level factor for sub-pixels corresponding to each of colors;
- and
- generate the weighted average picture level by dividing the sum of the square values of the grayscale values for sub-pixels corresponding to each of colors by the sum of the grayscale values.
8 more elements
Dependencies are inferred from the claim text.