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Apparatus for eliminating midfield skew error by delaying the lower half field of a T M format video signal to be recorded on the second of two tracks
Apparatus for eliminating midfield skew error by delaying the lower half field of a T M format video signal to be recorded on the second of two tracks
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机译：通过延迟要记录在两个轨道的第二个轨道上的T M格式视频信号的下半场来消除中场偏移误差的设备
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摘要
A video tape reproduction apparatus is operable in a conventional mode in which a field of video information is recorded in a single track on magnetic tape, and in a high quality mode in which a field of video information is recorded in two adjacent tracks. In the high quality mode, in order to minimize skew errors (which may occur during playback when switching in mid-field from track to track), the second half of the field is delayed before it is recorded in the second track. Preferably the first half of each field is recorded with an integral number of horizontal lines so that switching is effected during a horizontal blanking interval.
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