G09G2360/18

DISPLAY DEVICE AND METHOD OF DRIVING DISPLAY DEVICE
20230031528 · 2023-02-02 ·

A method of driving a display device, which includes a plurality of segments, each including a plurality of pixels, includes comparing grayscales of first image data of a first frame with respect to a segment among the plurality of segments and grayscales of a second image data of a second frame after the first frame with respect to the segment, modulating the second image data to generate first modulated data when the grayscales of the first image data are equal to the grayscales of the second image data, and providing data voltages to the segment based on the first modulated data.

Preemptive refresh for reduced display judder

In an embodiment, an electronic device includes an electronic display. The electronic display provides a programmable latency period in response to receiving a first image frame corresponding to first image frame data. The electronic display also displays the first image frame after the programmable latency period and during display of the first image frame, receives a second image frame corresponding to second image frame data. The electronic display also repeats display of the first image frame in response to receiving the second image frame.

Control method for magnifying display screen and associated display system

A display system includes a display device. The display device is arranged to receive a video signal and a control signal from a host system, and includes a processing circuit and a display screen, wherein the processing circuit is arranged to process an original frame corresponding to the video signal according to the control signal, to generate a magnified frame, and generate a processed frame according to the magnified frame and the original frame, and the display screen is coupled to the processing circuit, and is arranged to display the processed frame.

Systems and methods for generating an overdrive look-up table (LUT) for response time compensation of a display device
11488554 · 2022-11-01 · ·

Systems and methods are provided for generating an overdrive look-up table (LUT) for response time compensation of a display device are described. In some embodiments, an Information Handling System (IHS) may include a controller and a memory coupled to the controller, the memory having program instructions stored thereon that, upon execution, cause the controller to generate a Look-up Table (LUT) of alternate grey levels selected to implement Response Time Compensation (RTC) in a Liquid Crystal Display (LCD), where at least one of the alternate grey levels is calculated, at least in part, by taking into account a frame rate of a video stream.

Touch screen controller, touch screen driving circuit including the same and touch screen system
11487386 · 2022-11-01 · ·

A touch screen controller, a touch screen driving circuit and a touch screen system are provided. The touch screen driving circuit configured to drive a touch screen includes an analog driving circuit configured to provide driving signals to a display panel and a touch panel of the touch screen, and generate a touch sensing value based on a touch sensing signal from the touch panel; a display noise table (DNT) comprising display noise information indicating display noise that varies according to a driving state of the touch screen and image data; a feature extractor configured to extract a plurality of feature values from the driving state and the image data; and a touch processor configured to read a display noise value mapped to the plurality of feature values from the DNT, subtract the display noise value from the touch sensing value and generate a touch value.

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

An image data acquirement section of an image processing apparatus acquires data regarding a frame of a moving image generated by a server. A decoding/decompression section repeats a cycle of a decoding/decompression process for each of frames at a rate higher than the frame rate of the moving image. An image processing section repeats a cycle of applying a necessary image process to each of the frames at the rate higher than the frame rate of the moving image. The display control section outputs the data regarding the frame ready for displaying to a display panel at the rate higher than the frame rate of the moving image.

SYSTEMS AND METHODS EMPLOYING MULTIPLE GRAPHICS PROCESSING UNITS FOR PRODUCING IMAGES
20220351461 · 2022-11-03 · ·

A system for producing image frames for display at display device. The system includes graphics processing units including first graphics processing unit and second graphics processing unit that are communicably coupled to each other and pose-tracking means. Second graphics processing unit is configured to: process pose-tracking data, to determine device pose and velocity and/or acceleration with which device pose is changing; execute rendering application(s) to generate framebuffer data corresponding to image frame; and send, to first graphics processing unit, framebuffer data and information indicative of device pose and velocity and/or acceleration. First graphics processing unit is configured to: execute first compositing application to post-process framebuffer data, based at least on said information; and drive light source(s) using post-processed framebuffer data to display image frame.

METHOD AND DEVICE FOR SEAMLESS MODE TRANSITION BETWEEN COMMAND MODE AND VIDEO MODE
20220343877 · 2022-10-27 · ·

A method of seamlessly switching over between the command mode and the video mode includes receiving a command for switching over from the command mode to the video mode; generating a sampling value by measuring a time interval between a point in time of an internal synchronization signal used in the command mode and a point in time of an external synchronization signal received in the video mode; generating a parameter for shifting the internal synchronization signal based on the sampling value; shifting the internal synchronization signal to synchronize with the external synchronization signal based on the parameter; and switching over from the command mode to the video mode when the internal synchronization signal of the command mode synchronizes with the external synchronization signal. According to the disclosure, while driving a display.

DISPLAY EQUIPMENT, BRIGHTNESS COMPENSATION DEVICE AND BRIGHTNESS COMPENSATION METHOD

The disclosure provides a display equipment, a brightness compensation device, and a brightness compensation method. The brightness compensation device includes a variable refresh rate (VRR) detection circuit and a control circuit. The VRR detection circuit and the control circuit receive a video stream from a video source device, and the video stream includes a VRR video frame. The VRR detection circuit detects a blanking period of the VRR video frame and generates a detection result. The control circuit outputs the frame data of the VRR video frame to the display device during the valid data period of the VRR video frame. The control circuit repeatedly outputs the frame data of the VRR video frame to the display device during the blanking period of the VRR video frame according to the detection result until the blanking period ends.

DISPLAY DRIVER CIRCUIT SUPPORTING OPERATION IN A LOW POWER MODE OF A DISPLAY DEVICE
20230083748 · 2023-03-16 ·

A display driver circuit configured to drive a display panel includes a memory, a decoder, and a controller. The memory stores first data using data from outside of the display driver circuit. The decoder decodes the stored first data. The controller generates compression data using the decoded first data. While an image based on the decoded first data is displayed on the display panel, when second data based on the data from the outside are not stored in the memory after the first data are stored in the memory, the controller controls the decoder such that the decoder does not operate and controls the memory such that the compression data are stored in the memory.