Video frequency processing chip capable of regulating display ratio and its method for display picture

Abstract

This invention relates to a video process chip capable of adjusting display proportions and a method for displaying pictures. The chip receives video signals to output adjusted image signals to a liquid crystal display panel to display the picture including a video processor, a proportion detector, a time sequence controller and a multi-task processor, among which, the video processor receives video signals and generates image signals, the proportional detector detects the display proportion of video signals and outputs proportion control signals in terms of the proportion the time sequence controller responds the signal to output selection signals and blank data signals, the multi-task processor selects the signal control and selectively takes the blank data or image signal as the adjusted image output, so that the picture has the corresponding display proportion of the proportion set value.

Description

technical field [0001] The invention relates to a video processing chip, in particular to a video processing chip and a method for displaying pictures thereof. Background technique [0002] Please refer to figure 1 , which is a structural diagram of a video processing system chip of a conventional liquid crystal display. The video processing system chip 100 controls the liquid crystal display panel 130 to display images according to the video signal Video, and the video processing system chip 100 includes a video processor 110 and a timing controller 120 . The video processing system chip 100 outputs the control signal Sc, the red video signal R0 , the green video signal G0 and the blue video signal B0 after processing according to the video signal Video. The timing controller 120 outputs the data control signal Sd and the scan control signal Ss to the liquid crystal display panel 130 according to the control signal Sc. Under the control of the data control signal Sd and ...

AI Technical Summary

Problems solved by technology

In this way, since two scale adjustment circuits for generating pictures with different display scales need to be provided outside the video processing system chip 100, the cost will be greatly increased and the space of the circuit board will be consumed.

Also due to the increase of the circuit area, the volume of the liquid crystal display will also be increased.

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