公开(公告)号：US11113818B1

公开(公告)日：2021-09-07

申请号：US16799861

申请日：2020-02-25

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Tung-Ying Wu

IPC: G06T7/11 ,  G06T7/90 ,  G06T7/44

Abstract: A timing controller includes an image compensator for generating compensated image data. The image compensator is configured to: divide an input image into plural image blocks; select plural pixels located at one column of the image block as plural target pixels; generate an average representative gray level of the image block according to a histogram of gray levels of the image block; input the average representative gray level into a first lookup table to obtain a first gain; input a vertical pixel position of the target pixel and the average representative gray level into a second lookup table to obtain a second gain; obtain the compensated gray level by multiplying the gray level, the first gain, and the second gain of the target pixel; and replace the gray levels with the compensated gray levels to acquire the compensated image data.

公开(公告)号：US11004406B1

公开(公告)日：2021-05-11

申请号：US16734392

申请日：2020-01-05

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Tung-Ying Wu

IPC: G09G3/34 ,  G09G3/36

Abstract: A dual LCD device includes a gray LCD, a color LCD stacked on the gray LCD, a backlight assembly disposed at the rear of the gray LCD, and a controller. The controller is configured to receive an input image data and then respectively output a gray cell pixel data and a color cell pixel data to the gray LCD and the color LCD based on a dual cell dimming algorithm. The dual cell dimming algorithm is configured to alleviate a moiré effect caused by light interference between the gray LCD and the color LCD. The dual cell dimming algorithm includes: calculating an initial gray cell pixel data based on the input image data; calculating the gray cell pixel data by spatially blurring the initial gray cell pixel data; and calculating the color cell pixel data by compensating the gray cell pixel data.

公开(公告)号：US20200219441A1

公开(公告)日：2020-07-09

申请号：US16239477

申请日：2019-01-03

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Tung-Ying Wu

IPC: G09G3/3225 ,  H01L27/32

Abstract: An image processing system comprising: a gray level analyzing circuit, configured to analyze a gray level distribution of an input image and to calculate quantities for pixels having different gray levels in the input image; and a processor, coupled to the gray level analyzing circuit, configured to set first pixel gains for the pixels according to the gray levels and the quantities, and to process the input image with the first pixel gains to generate an output image.

公开(公告)号：US20250142110A1

公开(公告)日：2025-05-01

申请号：US18496947

申请日：2023-10-30

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Tung-Ying Wu

IPC: H04N19/513 ,  G06T5/00

Abstract: A method of motion adaptive spatial smoothing includes determining a difference of a block duty of a selected block of a current frame and a block duty of the selected block of a previous frame, generating an original smoothing matrix for the selected block, generating a motion adaptive matrix according to the original smoothing matrix and a difference of the block duty of the selected block of the current frame and the block duty of the selected block of the previous frame, updating a block duty for each block with a corresponding motion adaptive matrix to generate an updated frame, and performing spatial smoothing for the updated frame.

公开(公告)号：US11138953B1

公开(公告)日：2021-10-05

申请号：US16878636

申请日：2020-05-20

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Tung-Ying Wu

IPC: G09G3/3208 ,  G09G5/10

Abstract: A method for performing dynamic peak brightness control in a display module and an associated timing controller are provided. The method includes: calculating a maximum value and a minimum value of a previous image to determine a contrast ratio (CR) of the previous image; calculating a maximum level quantity (MLQ) of the previous image, wherein the MLQ represents a number of pixels corresponding to the maximum value; performing pixel data mapping on original pixel data of a current image according to a first gain corresponding to the MLQ, to generate intermediate pixel data of the current image; and performing selective pixel data adjustment on the intermediate pixel data according to a second gain corresponding to the CR and the MLQ, to generate updated pixel data of the current image, for being displayed on a display panel of the display module, wherein the updated pixel data replaces the original pixel data.

公开(公告)号：US10902766B1

公开(公告)日：2021-01-26

申请号：US16904527

申请日：2020-06-17

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Tung-Ying Wu ,  Tsai-Hsing Chen

IPC: G09G3/20 ,  G09G3/36

Abstract: A timing controller includes gamma correction (GC), line overdrive (OD) and dithering modules. The GC module performs GC on image data of an input image to convert the image data into gamma corrected data within a partial GC range of a predetermined GC range, the line OD module performs line OD on at least one portion of the gamma corrected data to convert the gamma corrected data into line-OD-processed data within a predetermined line OD range, and the dithering module performs dithering on the line-OD-processed data to convert the line-OD-processed data into dithered data within a predetermined dithering range. The timing controller drives a display panel to map first and second partial data of the dithered data into ordinary and extraordinary voltage ranges of the display panel, respectively, for displaying the dithered image while enhancing brightness. A display module including the timing controller, the display panel, etc. is also provided.

公开(公告)号：US10769039B2

公开(公告)日：2020-09-08

申请号：US16208507

申请日：2018-12-03

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Tung-Ying Wu ,  Chiu-Yu Chen

IPC: G06F11/16 ,  G09G3/22 ,  H04N19/176

Abstract: A method and apparatus for performing display control of a display panel to display images with aid of dynamic overdrive (OD) strength adjustment is provided. Each of the images includes a plurality of blocks, each of the plurality of blocks includes a plurality of pixels, and each of the plurality of pixels comprising a plurality of sub-pixels. The method comprising: encoding image data of a current image to generate encoded image data of the current image, wherein the encoded image data is compressed data of the image data; decoding the encoded image data of the current image to generate decoded image data of the current image; performing block error estimation to generate quantized block error values of the plurality of blocks, respectively; determining OD depressed gains, respectively; and adjusting OD strength of corresponding blocks within a next image, respectively, for controlling the display panel to display the next image.

公开(公告)号：US20200174896A1

公开(公告)日：2020-06-04

申请号：US16208507

申请日：2018-12-03

Applicant: HIMAX TECHNOLOGIES LIMITED

Inventor： Tung-Ying Wu ,  Chiu-Yu Chen

IPC: G06F11/16 ,  G09G3/22 ,  H04N19/176

Abstract: A method and apparatus for performing display control of a display panel to display images with aid of dynamic overdrive (OD) strength adjustment is provided. Each of the images includes a plurality of blocks, each of the plurality of blocks includes a plurality of pixels, and each of the plurality of pixels comprising a plurality of sub-pixels. The method comprising: encoding image data of a current image to generate encoded image data of the current image, wherein the encoded image data is compressed data of the image data; decoding the encoded image data of the current image to generate decoded image data of the current image; performing block error estimation to generate quantized block error values of the plurality of blocks, respectively; determining OD depressed gains, respectively; and adjusting OD strength of corresponding blocks within a next image, respectively, for controlling the display panel to display the next image.

公开(公告)号：US10468461B2

公开(公告)日：2019-11-05

申请号：US15879453

申请日：2018-01-25

Applicant: HIMAX TECHNOLOGIES LIMITED ,  Himax Media Solutions, Inc.

Inventor： Tung-Ying Wu ,  Tsai-Hsing Chen ,  Chao-Chen Huang

IPC: H01L27/32

Abstract: A method and apparatus for performing display control of a display panel having red, green, blue, and white sub-pixels are provided. The method may include: performing hue calculations on pixel data of an image frame to detect a yellow partial image of the image frame and detect a white partial image of the image frame; determining a distance between the yellow partial image and the white partial image; and when the yellow partial image and the white partial image are sufficiently close to each other, changing at least one of brightness of the yellow partial image and brightness of the white partial image to reduce a brightness difference between the yellow partial image and the white partial image, for controlling the display panel to display the yellow partial image and the white partial image with the brightness difference being reduced, to prevent generating an incorrect color related to inherent deficiency.

公开(公告)号：US20190229159A1

公开(公告)日：2019-07-25

申请号：US15879453

申请日：2018-01-25

Applicant: HIMAX TECHNOLOGIES LIMITED ,  Himax Media Solutions, Inc.

Inventor： Tung-Ying Wu ,  Tsai-Hsing Chen ,  Chao-Chen Huang

IPC: H01L27/32

Abstract: A method and apparatus for performing display control of a display panel having red, green, blue, and white sub-pixels are provided. The method may include: performing hue calculations on pixel data of an image frame to detect a yellow partial image of the image frame and detect a white partial image of the image frame; determining a distance between the yellow partial image and the white partial image; and when the yellow partial image and the white partial image are sufficiently close to each other, changing at least one of brightness of the yellow partial image and brightness of the white partial image to reduce a brightness difference between the yellow partial image and the white partial image, for controlling the display panel to display the yellow partial image and the white partial image with the brightness difference being reduced, to prevent generating an incorrect color related to inherent deficiency.