通过改进搜索策略、调整视频包络信号的门限值和设置相应的过渡状态等方法，提高了自动磁迹跟踪的速度和准确性。
The speed and accuracy are increased by improving the search strategy, adjusting the threshold of the video signal envelope and setting the corresponding transitive state.
以视频码流流量的实测包络为基础，提出了一种流量描述模型。
Based on the empirical envelope of a compressed video stream, a traffic description model was developed.
早期电视机的视频检波均采用大信号包络检波电路，后来在集成化的电视机中，视频检波又都采用同步检波方式。
All circuits of demodulating strong signal envelope are adopted in previous TV's video demodulation, synchronizing demodulations are widely used in video demodulation in the later integrated TV set.
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