Abstract: A backlight control apparatus for controlling luminance of a backlight panel includes an image information memory and a detection and automatic switching circuit. The image information memory is for storing the image information. The detection and automatic switching circuit is for detecting the updated frequency of the updated image information and then sets a displaying mode for adjusting the luminance of the backlight panel according to the updated frequency.

Abstract: In a first display period of a display device, a first count value is recorded at the rising edge of the data enable signal for controlling the length of a horizontal line. Next, a second count value is recorded at the falling edge of the data enable signal for identifying the time when the data enable signal switches from a high level to a low level. When entering a porch period following the first display period, the counter is cleared when the count value reaches the first count value. In a second display period following the porch period, the counter is cleared at the rising edge of the data enable signal, and the first count value is used for controlling the length of the horizontal line.

Abstract: A data driving circuit for a flat display panel with a partial mode and a method for processing pixel data of a partial window. The driving circuit includes an input register and a data collection circuit. When the driving circuit is in the partial mode, it determines whether to sequentially read pixel data for pixels of the pixel data of the window from a data area according to a boundary of the window and a scan count, and temporarily stores the pixel data into the data collection circuit. When the scan count indicates that the window is to be displayed, the data collection circuit selects pixel data for pixels from the temporarily stored pixel data for the pixels and accordingly produces pixel data for pixels to the input register so as to sequentially output the pixel data of the window to drive the display panel to display the window.

Abstract: A driving method for a display device provides a first input pixel data corresponding to a pixel, and generates a second input pixel data by multiplying the first input pixel data by a predetermined rate. Next, an output pixel data corresponding to the second input pixel data is obtained from a predetermined gamma curve.

Abstract: A pulse extension circuit for extending a pulse signal includes an input unit for receiving the pulse signal, an edge detection unit coupled to the input unit for generating a initiation signal, a pulse initiation unit coupled to the edge detection unit for outputting a control signal and adjusting a voltage level of the control signal, a pulse width control unit coupled to the pulse initiation unit for outputting a termination signal, a reset unit coupled to the edge detection unit, the pulse initiation unit and the pulse width control unit for outputting the first reset signal and the second reset signal to reset the pulse initiation unit and the pulse width control unit, and an output unit coupled to the input unit and the pulse initiation unit for extending a signal period of the pulse signal according to the pulse signal and the control signal.

Abstract: A pulse extension circuit for extending a pulse signal includes an input unit for receiving the pulse signal, an edge detection unit coupled to the input unit for generating a initiation signal, a pulse initiation unit coupled to the edge detection unit for outputting a control signal and adjusting a voltage level of the control signal, a pulse width control unit coupled to the pulse initiation unit for outputting a termination signal, a reset unit coupled to the edge detection unit, the pulse initiation unit and the pulse width control unit for outputting the first reset signal and the second reset signal to reset the pulse initiation unit and the pulse width control unit, and an output unit coupled to the input unit and the pulse initiation unit for extending a signal period of the pulse signal according to the pulse signal and the control signal.