A display driver comprises gamma processing circuitry, compensation circuitry, and driver circuitry. The gamma processing circuitry is configured to process the image data to generate gamma processed image data. The compensation circuitry is configured to process the gamma-processed image data, based on a ratio of a number of display elements that emit light to a total number of display elements of a display panel, to generate compensated image data. The driver circuitry is configured to drive the display panel based on the compensated image data.

A display device including a display panel having a display area in which a plurality of pixels are arranged, and a light source unit overlapping the display panel and including at least one light source. The light source unit irradiates infrared light to a predetermined region within the display area when displaying an image on the display area to change the luminance of pixels disposed in the predetermined region.

The invention discloses a driving method and a device for a light-emitting element. The method includes: acquiring a display image; calculating a backlight brightness required for the display image; and selecting at least one pulse signal from the preset plurality of pulse signals to drive the light emitting element according to the backlight brightness.

The present application discloses a method, device, and apparatus for brightness compensation of a display panel. The display panel has a first display region and a second display region. The method includes selecting at least one first region in the second display region close to the first display region; obtaining current brightness values of sub-pixels in the at least one first region under a target grayscale value; determining an average brightness value of the at least one first region based on the current brightness values of the sub-pixels in the at least one first region; determining a target brightness value of the first display region under the target grayscale value according to the average brightness value; performing brightness compensation on the first display region based on the target brightness value.

A video processing device includes an acquirer that acquires video data via a predetermined transmission line, the video data including video and metadata that indicates a first frequency band that is a spatial frequency range in which the video is present; an adjuster that makes sharpness gain adjustment to video such that, among a plurality of regions of the video included in the video data acquired by the acquirer, a sharpness gain for a first region that belongs to the first frequency band indicated by the metadata exceeds a sharpness gain for a second region that belongs to a second frequency band that is a range outside the first frequency band; and an output device that outputs video adjusted by the adjuster.

A method, device, and apparatus for determining a brightness compensation parameter. The method includes: obtaining, at any grayscale, a plurality of first acquired brightness values of a plurality of first sub-pixels of a target color in the first display region and a plurality of second acquired brightness values of a plurality of second sub-pixels of the target color in the second display region of the display panel to be compensated; determining whether an acquisition ratio of an average value of the plurality of first acquired brightness values to an average value of the plurality of second acquired brightness values is within a standard range; correcting the plurality of first acquired brightness values or the plurality of second acquired brightness values to obtain a corrected brightness value of the display panel; determining the brightness compensation parameter of the display panel based on the corrected brightness value.

A drive control method and a related device for a display panel that has different display areas are provided. Time-divided drive control is performed on pixel scan circuits corresponding to the different display areas, so that in a scenario in which some display areas do not need to display an image, a pixel scan circuit may be left idle for some time, to reduce power consumption required by the pixel scan circuits for scanning pixels in this time period. In addition, in the embodiments of this application, time-divided drive control is further performed on touch scan circuits and fingerprint scan circuits corresponding to the different display areas, independent power supplying is further used for pixels in the different display areas, and some functions of a display driver are enabled in a time-divided manner.

Aspects of the present disclosure relate to adjusting an illumination of a user depicted in one or more images when using a video conferencing application. In one example, one or more images depicting the user may be received from an image sensor. Further, an illumination of the user depicted in the one or more images may be determined to be unsatisfactory. For example, the user's face may be too bright or too dim. Accordingly, content displayed at a display device may identified and then modified. The modified content may then be rendered to a display device thereby changing the illumination of the user depicted in subsequent images. In examples, the modified content may include a graphical element, such as a ring of a specific color at least partially surrounding content rendered to and displayed at the display device.

A display device includes a display panel, a power supply unit, and a low frequency offset compensator. The display panel includes a plurality of pixels. The power supply unit generates a first initialization voltage and a second initialization voltage and provides the first initialization voltage and the second initialization voltage to the pixels. The low frequency offset compensator selectively applies an offset to the second initialization voltage when the display panel is driven at a low frequency.

In some aspects, a user device may receive, from a camera of the user device, an image of a physical environment of the camera. The user device may determine, using a brightness analysis model, a first brightness associated with a first portion of the image that depicts an object. The user device may determine, using the brightness analysis model, a second brightness associated with a second portion of the image that is separate from the first portion. The user device may set, based at least in part on the first brightness and the second brightness, a brightness level of a display of the user device. Numerous other aspects are described.