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公开(公告)号:US4916553A
公开(公告)日:1990-04-10
申请号:US170119
申请日:1988-03-15
IPC分类号: H04N5/7826 , H04N5/92 , H04N9/896
CPC分类号: H04N9/896 , H04N5/78266 , H04N5/92
摘要: In a rotary magnetic head helical scan type video tape recorder using a segment recording system, a video signal of one vertical scanning period is divided into n video signal blocks, where n is an integer equal to or larger than 2, and a redundant period having a selected length is inserted into the video signal blocks in a recording mode. Each of the video signal blocks has a number of horizontal scanning lines equal or smaller than N/n, where N is the number of the horizontal scanning lines in a field of the video signal. In a reproducing mode, a time axis error of reproduced series of the video signal blocks is corrected at least during the redunant periods. Then, the corrected blocks are converted into the original video signal.
摘要翻译: 在使用分段记录系统的旋转磁头螺旋扫描型磁带录像机中,将一个垂直扫描周期的视频信号分成n个视频信号块,其中n是等于或大于2的整数,并且具有 在记录模式下将选定的长度插入到视频信号块中。 每个视频信号块具有等于或小于N / n的多条水平扫描线,其中N是视频信号的场中的水平扫描线的数量。 在再现模式中,至少在冗余期间校正视频信号块的再现系列的时间轴误差。 然后,校正的块被转换成原始视频信号。