Video Format Conversion System And Chip

The combination of new displays, new TV broadcasting formats and the advent of multi-media equipment has rapidly increased the need for high quality consumer video format conversion. Digital video post-processing 1C is designed for consumer video format conversion to attain high quality image, which mainly includes de-interlacing spatial conversions and picture rate conversion. At the present time, the domestic market is almost monopolized by foreign companies such as Trident Pixel Works. It is very important to develop our own Digital video post-processing IC.This dissertation mainly focuses on the key technology in the Digital video post-processing IC-de-interlacing scaling and noise reduction. In the dissertation, the author proposes our own edge-based motion adaptive de-interlacing algorithm, image scaling algorithm and algorithm of 3D luminance and color noise reduction, which has been applied for four patents and other patents should be applied soon. It introduced the frame of the IC and its main parts. In the end give the application of the IC.As the algorithm proposed in this dissertation is designed for IC, the following part of the dissertation introduce two leading algorithm that has been implemented in IC: Philips's motion compensated de-interlacing algorithm and Faroudja's edge-based de-interlacing algorithm. Simulation shows our own edge-based algorithm can remove the sawtooth on the object's edge, and has basically reach the level of DCDi. It introduces the necessity of image scaling, After reviewing many classical image interpolation methods the paper proposes a image interpolating algorithm based on edge and get a high image quality. Here introduces some noise modules, and overviews the classical noise reduction methods and analyzed their advantages and disadvantages. At last, the dissertation proposed a new 3-D recursive noise reduction method to improve the signal-to-noise ratio after noise suppression.this dissertation simply introduces the the frame of the IC and the function of its main parts,and give the means of realization . then the dissertation simply give the application of the IC.At last the dissertation give the summary and point out some work to do in the future: more productions meet the need of the market, improving the performance with the advance of technology, improving the grade of integration of the IC.