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视频解码芯片是数字电视信号接收机的关键部件,文中介绍了一种新型视频解码器的结构设计与硬件实现,详细阐述了解码器的总体框架、主要模块的功能及结构。由模拟前端模块,实现模数变换功能,梳子滤波器完成亮度和色度信号的分离,CENRDE模块完成色彩增强,噪声去除。增强缩放器完成隔行到逐行的变换以及缩放功能,最后输出格式模块完成显示格式的转化。结果表明本结构和设计得到较好的解码效果。
Video decoder chip is a key component of digital TV signal receiver. In this paper, the structure design and hardware implementation of a new type of video decoder are introduced. The overall framework of the decoder, the function and structure of the main module are described in detail. By analog front-end module, to achieve analog-digital conversion function, comb filter to complete the separation of luminance and chrominance signals, CENRDE module to complete the color enhancement, noise removal. Enhance the scaler to complete the interlaced to progressive conversion and scaling functions, the final output format module to complete the display format conversion. The results show that the structure and design get better decoding results.