公开(公告)号：US5315457A

公开(公告)日：1994-05-24

申请号：US829313

申请日：1992-02-03

申请人： Koichi Ono ,  Tsunekazu Okada ,  Seiichi Hataoka

发明人： Koichi Ono ,  Tsunekazu Okada ,  Seiichi Hataoka

IPC分类号： G11B5/588 ,  G11B15/467 ,  G11B15/473 ,  H04N5/7826 ,  H04N9/82 ,  H04N9/83 ,  G11B5/584 ,  G11B5/58 ,  H04N5/78

CPC分类号： H04N9/8205 ,  G11B15/4736 ,  H04N9/83

摘要： A video signal is recorded in successive tracks on a recording medium together with a pilot signal, the latter having a frequency that changes cyclically with a different one of at least four frequencies in successive tracks. A field detector detects sequential fields in the frames of the video signal, and rotation of the usual rotary transducers is servo-controlled in response to the detected sequence of fields and a pulse that is generated as the transducers rotate to represent the rotational phase of those transducers. A pilot signal generator generates the pilot signal with an initial frequency determined by an initial field in the detected field sequence, and with this frequency changing as a function of the detected sequential fields.

摘要翻译： 视频信号与导频信号一起记录在记录介质上的连续轨道中，导频信号具有以连续轨道中的至少四个频率中不同的一个频率周期性地改变的频率。 场检测器检测视频信号的帧中的顺序字段，并且响应于检测到的场序列和当换能器旋转以产生的脉冲来表示那些的旋转相位时的脉冲，伺服控制通常的旋转传感器的旋转 传感器。 导频信号发生器产生具有由所检测的场序列中的初始场确定的初始频率的导频信号，并且该频率随着检测到的顺序字段的变化而变化。

公开(公告)号：US4698703A

公开(公告)日：1987-10-06

申请号：US887954

申请日：1986-07-22

申请人： Kazuhisa Nishimura ,  Mitsugu Yoshihiro ,  Masaaki Sakai ,  Seiichi Hataoka

发明人： Kazuhisa Nishimura ,  Mitsugu Yoshihiro ,  Masaaki Sakai ,  Seiichi Hataoka

IPC分类号： G11B15/18 ,  G11B15/46

CPC分类号： G11B15/1875

摘要： A capstan servo system for a video tape recording and/or reproducing apparatus permits recording of a new video signal precisely commenced at a selected edit point. For this, the capstan servo system is provided a tape speed error dependent feedback control feature and a phase error dependent feedback control feature. Tape speed error dependent feedback control is carried out when the recording and/or reproducing apparatus operates in recording or assemble edit mode. Phase error dependent feedback control is carried out when the recording and/or reproducing apparatus operates in reproducing or playback mode.

摘要翻译： 用于录像带记录和/或再现设备的主导轴伺服系统允许记录在所选编辑点处精确地开始的新视频信号。 为此，主导轴伺服系统提供了带速度误差相关的反馈控制特征和相位误差相关的反馈控制特征。 当记录和/或再现设备在记录或组合编辑模式下操作时，进行带速度误差相关反馈控制。 当记录和/或再现装置在再现或重放模式下操作时，执行相位误差相关反馈控制。