A gamma debugging method and a gamma debugging apparatus are provided. The gamma debugging method includes: selecting a test display region in a first display region, performing gamma debugging on test sub-pixels to obtain a first gamma data set; controlling all sub-pixels in the test display region and all sub-pixels in a second display region to emit light, and detecting a target luminance and a target chrominance of the test display region that correspond to a corresponding grayscale; performing gamma debugging on the second display region to obtain a second gamma data set; obtaining, based on the second gamma data set, the first gamma data set and the predetermined gamma data set, a third gamma data set applied to the second display region.

A data processing method spoiled to a display apparatus includes, obtaining first image data including first pixel values of pixels; obtaining a brightness control value of each backlight unit according to first pixel values of pixels corresponding to the backlight unit; determining relative positional relationships between a first pixel and at least two first backlight units in a plane perpendicular to a thickness direction of the display apparatus, the first backlight units including a backlight unit corresponding to the first pixel and backlight unit(s) adjacent thereto; determining an optical diffusion coefficient of each first backlight unit at a corresponding position of the first pixel according to the relative positional relationships; and determining a backlight brightness characteristic value of the first pixel according to a brightness control value of each first backlight unit and the optical diffusion coefficient of each first backlight unit at the corresponding position of the first pixel.

Provided are a method and an apparatus for detecting pixel defect of optical module, and a device, where the method includes: graying an image obtained by imaging a test binary image by an optical module in a darkroom environment to obtain a first grayscale image; determining a first grayscale area and a second grayscale area corresponding to two gray levels in the test binary image from the first grayscale image; determining a pixel point not matching a grayscale feature of respective grayscale region from the first grayscale area and the second grayscale area respectively as a pixel defect point; and determining the pixel defect of the optical module according to the pixel defect point. The technical solution provided in the present disclosure can detect accurately a pixel defect of an optical module which is advantageous in optimizing the processing technology of the optical module.

An image distortion correction circuit according to the present invention comprises; a first distortion correction circuit that performs a mapping process on an input image signal to generate a distortion-corrected image signal; an inspection region defining circuit that defines an inspection image region in the one-frame image; an inspection region extraction circuit that extracts a part corresponding to the inspection image region from the distortion-corrected image signal and outputs the part of the distortion-corrected image signal as a first inspection image signal; a second distortion correction circuit that outputs a second inspection signal, the second inspection signal being generated by performing the mapping process on the part of the input image signal corresponding to the inspection image region; and a failure determination circuit that determines that a failure occurs and outputs a failure detection signal when the first inspection image signal and the second inspection image signal are mutually different.

What is disclosed are systems and methods of compensation of images produced by active matrix light emitting diode device (AMOLED) and other emissive displays. The electrical output of a pixel is compared with a reference value to adjust an input for the pixel. In some embodiments an integrator is used to integrate a pixel current and a reference current using controlled integration times to generate values for comparison.

A compensation method include that an electronic device determines, based on statistical data of a first display and a first correspondence, a first actual value of a to-be-measured parameter of the first display at the end of a first statistical period; determines, based on statistical data of a second display and a second correspondence, a second actual value of a to-be-measured parameter of the second display at the end of the first statistical period; determines a compensation target value based on the first actual value and the second actual value when the first actual value is less than the second actual value; and writes the compensation target value into a first register configured to control the to-be-measured parameter of the first display, and writes the compensation target value into a second register configured to control the to-be-measured parameter of the second display.

An information handling system includes a timing controller configured to transmit a command for a common voltage of a particular frame rate to a power management circuit. A storage component may store digital information, wherein each digital information is associated with the common voltage of a particular frame rate. The power management circuit supports a variety of common voltage requirements of the liquid crystal display including an ability to select digital information of the digital information that is associated with the common voltage at the particular frame rate stored in the storage component and apply the common voltage at the particular frame rate to the liquid crystal display.

What is disclosed are systems and methods of compensation of images produced by active matrix light emitting diode device (AMOLED) and other emissive displays. The electrical output of a pixel is compared with a reference value to adjust an input for the pixel. In some embodiments an integrator is used to integrate a pixel current and a reference current using controlled integration times to generate values for comparison.

A pixel circuit, a display panel, a display device, and a driving method. The pixel circuit includes a light emitting element, a driving transistor, a light emitting control circuit, a reset circuit, a threshold compensation circuit, a first data write circuit, and an initializing circuit. The reset circuit includes a first transistor, the first data write circuit includes a third transistor, and a channel length-width ratio of the first transistor is greater than a channel length-width ratio of the third transistor.

A method for calibrating a color gamut of a display screen includes: acquiring a brightness level of the display screen, and original red green blue (RGB) values of a color to be displayed by a pixel in the display screen; determining, according to the brightness level of the display screen and the original RGB values, corrected color coordinates; and determining a calibrated RGB values according to the corrected color coordinates, and driving, with the calibrated RGB values, light emission of the pixel in the display screen.