Allowable data signal processing device for interactive digital video system interface

Abstract

This invention relates to one interact digital visual frequency interface data signal process device, which comprises the following parts: receiving vertical and level synchronous signals and testing work status LPF through above digital visual system DVI interface; turning the signals and keeping original output cathode correction part according to LPF output work status information; getting cathode level and vertical signals and permitting data DE signals relate DE signals to generate level and vertical synchronous signals.

Description

Technical field [0001] The invention relates to an interactive digital video system DVI interface, in particular to a DE (Data Enable) signal processing device for the interactive digital video system DVI interface. Background technique [0002] Recently, as image display devices have become more sophisticated, in order to display high-quality images, an interactive digital video system DVI interface function is generally installed in digital televisions. [0003] The digital TV receiver with the above-mentioned DVI interface function receives DE signal, horizontal and vertical synchronization signal, and RGB signal, and after processing these signals, the image is reflected by the video scaler integrated circuit IC. In particular, the above-mentioned DE signal is a signal for distinguishing actual display time and blanking time, and the above-mentioned digital television receiver sets the starting points of horizontal and vertical images based on the DE signal to form an im...

AI Technical Summary

Problems solved by technology

[0008] However, among the scalers currently in use, some scalers cannot handle DE signals, so it is impossible to use DE signals to display the best image

[0009] That is, the information of the actual image interval cannot be obtained through the DE signal, and the image display device can only use the horizontal synchronization signal to find the image start reference point in the horizontal direction. dithering image phenomenon

[0010] And, contrary to the effective image interval of the above-mentioned DE signal display image interval, the above-mentioned horizontal and vertical synchronization signals cannot reflect specific information such as the beginning of the actual image interval. The image starts to display at different positions, thus reducing the reliability of the product

[0011] Moreover, since the positions of horizontal and vertical synchronizing signals and display image intervals are different for specifications such as 480i, 480P, 720P, and 1080i, or for each PC specification specified in the Video Electronics Standards Association VESA, if you do not recreate them in your own format, Set the starting point of the image, the image will not be in the center of the screen, and its position will become incorrect

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