Orise Technology Co., Ltd.

Yu-Li Wu

Chih-Kai Chang

A pixel data conversion method for display with delta panel arrangement converts an input video signal into a temporary video signal which is a first RGB signal with 640 horizontal resolution in a strip panel arrangement and converts the temporary video signal into an output video signal which is a RGB signal with 320 horizontal resolution in the delta panel arrangement. Each line of the output video signal has 960 pixels. A pixel size ratio is defined as a ratio of a pixel size of the delta panel to a pixel size of the strip panel. The 320 horizontal resolution is obtained by dividing the 640 horizontal resolution by the pixel size ratio and then by three.

Pixel data conversion apparatus and method for display with delta panel arrangement

An apparatus of approximating backlight spread is used in a display to estimate a backlight spread image corresponding to an image after backlight spreading of a plurality of backlight sources arranged in a matrix form. An equalizer receives backlight pulse width modulation signals of the backlight sources for performing an equalization operation and generating corresponding equalization signals. A backlight seed image constructor receives the equalization signals to establish a backlight seed image. A first calculation unit calculates positions corresponding to the backlight seed image based on a backlight spread image. A second calculation unit calculates coordinates of the backlight seed image corresponding to the positions. A distance calculator calculates distance differences between the positions and coordinates of the backlight seed image. A bilinear transformation unit performs a bilinear transformation on pixels of the backlight seed image and the distance differences so as to generate the backlight spread image.

Method and apparatus of approximating backlight spread in a local dimming system

An apparatus compensates image in a backlight local dimming system for estimating pixels of the image after backlight spreading of a plurality of backlight sources in the backlight local dimming system. The apparatus includes a block dimming value decision unit, a quality/power-saving priority decision unit, a temporal filter, a backlight spread approximation unit, and an image compensation unit. The block dimming value decision unit calculates an average value, a maximum value and a initial value for each image block. The quality/power-saving priority decision unit generates a backlight control signal based on the average value, the initial value, and two thresholds. The temporal filter adaptively generates a backlight pulse width modulation signal based on the backlight control signal. The backlight spread approximation unit generates a backlight spread image based on the backlight pulse width modulation signal. The image compensation unit compensates the image based on the backlight spread image.

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Hsinchu, Taiwan

Yu-Li Wu