A preparation method of a display panel includes: forming multiple compensation groups on a substrate to obtain an array substrate, where the multiple compensation groups include at least first compensation group and second compensation group, and brightness difference of light-emitting elements of same light-emitting color in the first compensation group and the second compensation group under a same gray scale is larger than a preset value; calculating thicknesses of first color film layer, second color film layer and third color film layer corresponding to each of the multiple compensation groups respectively; forming the first color film layer, the second color film layer and the third color film layer on light-emitting side of the first light-emitting element, the second light-emitting element, and the third light-emitting element respectively according to the thicknesses of the first color film layer, the second color film layer and the third color film layer obtained by calculation.

A compositor receives, from each of a plurality of originating devices, compressed and/or encrypted image data portions of a frame of image data, together with portion metadata for each of the compressed and/or encrypted image data portions. Frame metadata for the frame of image data. The compositor then composites the image data portions without decompressing and/or decrypting them, based on the portion and frame metadata, by generating composited frame metadata for the composited image frame and amending the portion metadata for each of the compressed and/or encrypted image data portions to indicate a location of the compressed and/or encrypted image data portions in the composited image frame. The compressed and/or encrypted image data portions, the composited frame metadata and the amended portion metadata are then transmitted by the compositor to a display control device.

A vehicular trailer hitching assist system includes a rear backup camera disposed at a rear portion of a vehicle and a control disposed in the vehicle. A display device includes a video display screen operable to display video images for viewing by a driver of the vehicle. During a hitching maneuver event undertaken by the driver to hitch a trailer hitch of the vehicle to a trailer tongue of a trailer, and while the driver of the vehicle is maneuvering the vehicle to hitch the vehicle to the trailer, the control outputs video images derived from image data captured by the rear backup camera for display by the video display screen. At least one overlay overlays the displayed video images to guide the driver during the hitching maneuver. The at least one overlay aids in guiding connection of the trailer hitch of the vehicle to the trailer tongue of the trailer.

Controlling the illumination at an endpoint to a communication session by transmitting, over the communication session, the color of the light to be emitted by the display of the receiving endpoint. In a particular embodiment, a method includes, during a video communication session between a first endpoint operated by a first user and a second endpoint operated by a second user, transmitting first video, comprising a solid color image, from the first endpoint to the second endpoint over the video communication session, wherein the first video is prominently displayed at the second endpoint. At the first endpoint, the method provides receiving second video from the second endpoint. The second video is captured at the second endpoint while the first video is being displayed at the second endpoint. The method also includes displaying the second video to the first user.

A display device includes a silicon wafer including digital circuits, a micro-light emitting diode (micro-LED) wafer including an array of micro-LEDs, and an indium-gallium-zinc-oxide (IGZO) layer between the silicon wafer and the micro-LED wafer and including analog circuits. The digital circuits are characterized by a first operating supply voltage and are configured to generate digital control signals based on digital display data of an image frame. The analog circuits are characterized by a second operating supply voltage higher than the first operating supply voltage. The analog circuits includes analog storage devices configured to storing analog signals, and transistors controlled by the digital control signals and the analog signals to generate drive currents for driving the array of micro-LEDs. The digital circuits on the silicon wafer or the analog circuits in the IGZO layer include level-shifting circuits at interfaces between the digital circuits and the analog circuits.

A method for processing an input image having an initial gamut to a targeted image having a wider gamut for display on a wide-gamut display includes determining a set of color scaling factors based on different parameters including one or more user-related characteristics of a user and the available gamut of the wide-gamut display device, applying a gamut-mapping to the input image based on the available gamut to generate a gamut-mapped image and applying the set of color scaling factors to the gamut-mapped image to generate the targeted image. A user device having a wide-gamut display device also includes an image processing module configured for performing the method for processing the input image.

A display device includes a display panel, a driver, a detector, and an acquisition part. The driver drives the display panel based on a video signal. The detector obtains a first detection value by detecting reflective light from reflective media, which occurs when ambient light is irradiated to reflective media, while obtaining a second detection value by detecting reflective light from reflective media, which occurs when the display panel irradiates its display light to reflective media. The driver corrects a drive value for the display panel such that the second detection value approaches the first detection value or such that the chromaticity represented by the second detection value approaches the chromaticity represented by the first detection value, and therefore the acquisition part acquires information concerning the color temperature of ambient light based on the corrected drive value.

A video signal conversion method, a corresponding video signal conversion device and a display system including the video signal conversion device, by which low-resolution video signals can be converted and combined into a high-resolution video signal, such that a high-resolution image combined by low-resolution images can be displayed on an ultra-high definition display screen. The video signal conversion method includes: receiving in parallel a plurality of sub-frames divided from a low-resolution image of a video signal; performing image processing on each of the received sub-frames; and synthesizing the plurality of sub-frames after being subjected to the image processing into a high-resolution image frame and displaying the high-resolution image on a display device.

Methods and apparatuses are disclosed herein for performing tone mapping and/or contrast enhancement. In some examples, a block mapping curve is low-pass filtered with block mapping curves of surrounding blocks to form a smoothed block mapping curve. In some examples, overlapped curve mapping of block mapping curves, including smoothed block mapping curves, is performed, including weighting, based on a pixel location, block mapping curves of a group of blocks to generate an interpolated block mapping curve and applying the interpolated block mapping curve to a pixel to perform ton mapping and/or contrast enhancement.

A video input interface receives video data. An OSD circuit draws an intermediate layer in a target region in which an OSD character is to be overlaid on the video data, and overlays the OSD character on the intermediate layer.