Noise Due to Flutter and Skew in Recording of Pseudorandom Scanned TV Signals

The distortion of a pseudorandom scanned TV signal caused by flutter and skew introduced by the tape recording apparatus is analyzed theoretically. Specifically, the signal-to-noise ratio is computed for a typical system, under the assumption that the distortion can be considered to be additive random noise with a Gaussian amplitude distribution.     

一种BT.656到XGA视频格式转换结构的FPGA实现

本文简化了常用的BT.656接口复合视频信号向1024×768的XGA视频信号转换的结构,在matlab中对该结构的核心转换模块进行了算法建模和仿真。在此基础上用HDL描述语言描述了整个转换结构的功能模型,并用matlab生成视频数据文件供modelsim工具作为输入,仿真后输出图像数据经matlab处理显示结果正确。最后在FPGA验证板上对整个视频格式转换模块进行了原型验证,输出视频信号清晰地显示在显示器上。