Mstar Semiconductor, Inc.

Wen-Ho Hsiao

Jiunn-Kuang Chen

Hsu-lin FanChiang

Yi-Liang Lu

Shu-Yueh Ko

A method and an apparatus for displaying an image on a display unit and controlling a backlight module which irradiates the display unit are disclosed. The method includes: processing the image signal and generating a driving signal to drive the display unit; displaying contents of the image signal; analyzing luminance values of the image signal to generate a luminance analysis result; and generating a control signal to control the backlight module according to the luminance analysis result.

Apparatus and method for displaying an image on a display unit and controlling the backlight module utilized to irradiate the display unit

The present invention provides a display controller for scaling an input source image. The display controller dynamically adjusts the output clock so line buffer requirement is reduced to a minimum to balance input and output image timing for image scaling or non-scaling to destination devices. The present invention supports up-scaling and down-scaling or bypass. The blocks of the line buffer operates in a continuous and cyclical manner according to the status signal generated by the line buffer status detector and the output clock. As a result, any buffer overrun or underrun condition will be immediately corrected by the timing and therefore the number of blocks of line buffer are greatly reduced.

Display controller provided with dynamic output clock

A method and apparatus for automatically tuning the output line rate thereof and a display controller provided with the same. The display controller of the present invention provides a display controller having a line buffer, an input means, an output means, a status detector, and an auto-tune control means. The input means is employed to write line data into the line buffer at an input line rate, and the output means is employed to read the written line data from the line buffer at an output line rate. The status detector is coupled to the input means and the output means for generating a status signal indicating whether the input line rate and the output line rate are unbalanced. The auto-tune control means is used to adjust the output line rate in response to the status signal so as to balance the input line rate and the output line rate.

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Hsinchu, Taiwan

Wen-Ho Hsiao