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IMPROVEMENT OF A PROCESS FOR VIDEO COPY PROTECTION FOR THE INTRODUCTION OF HORIZONTAL AND VERTICAL IMAGE DISTORTION
IMPROVEMENT OF A PROCESS FOR VIDEO COPY PROTECTION FOR THE INTRODUCTION OF HORIZONTAL AND VERTICAL IMAGE DISTORTION
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机译:引入水平和垂直图像失真的视频复制保护过程的改进
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摘要
The method involves blanking a portion of a video signal at a location in the over-scan portion of the video signal prior to a synchronisation signal. A waveform for indicating a video retrace prior to occurrence of the synchronisation signal is added to the blanked location. The adding step involves adding the waveform only to portions of the video signal having active video prior to the blanking step.
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