首页> 外国专利> Variable-speed playback method in the magnetic recording and reproducing apparatus (磁 氣 記錄 再生 裝置) (可 變速 再生 方法) and an apparatus

Variable-speed playback method in the magnetic recording and reproducing apparatus (磁 氣 記錄 再生 裝置) (可 變速 再生 方法) and an apparatus

机译:Variable-speed playback method in the magnetic recording and reproducing apparatus (磁 气 记录 再生 装置) (可 变速 再生 方法) and an apparatus

摘要

A method for correcting deviation between one of video tracks on a magnetic tape (1) and a rotating head (3) during a tape stop state of an intermittent drive for a noiseless slowstill picture in a video tape recorder using pilot signals. A series of pulses from a frequency generator (17) of a capstan (5) is counted during the tape feeding state of an intermittent drive in order to detect a timing of stopping the tape feeding. As the count number thereof becomes a set value corresponding to a regular amount of feeding the tape during the intermittent drive, the tape feeding is controlled to stop. A tracking error signal is produced from the pilot signals reproduced from the tape by the rotating head within the tape stop state of the intermittent drive. The set value for the next tape feeding of the intermittent drive is corrected in response to the tracking error signal.
机译:一种用于在磁带录像机中使用导频信号的间歇驱动的磁带停止状态下,在磁带(1)和旋转磁头(3)上的一个视频磁道停止状态下校正偏差的方法。在间歇驱动的带进给状态期间,对来自主导轴(5)的频率发生器(17)的一系列脉冲进行计数,以检测停止带进给的时间。当其计数数变为与间歇驱动期间的正常带进给量相对应的设定值时,控制带进给停止。在间歇驱动器的磁带停止状态下,由旋转头从磁带再现的引导信号中产生跟踪误差信号。响应于跟踪误差信号,校正用于间歇驱动器的下一次带进给的设定值。

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