公开(公告)号：US5289323A

公开(公告)日：1994-02-22

申请号：US834965

申请日：1992-02-14

申请人： Milan V. Trcka ,  James S. Bacon ,  Jose G. Aguilar

发明人： Milan V. Trcka ,  James S. Bacon ,  Jose G. Aguilar

IPC分类号： G11B15/467 ,  H04N5/795

CPC分类号： G11B15/4676

摘要： In a helical scan magnetic tape recorder, a rotary magnetic head scanner includes odd and even azimuth data reproduce heads and odd and even azimuth sense heads on the head wheel to effect automatic tracking. The odd and even azimuth sense heads establish a tracking error signal when reproduced signal envelopes are not equal. The error signal is used to control a capstan servo to maintain correct data head-to-track positioning.

摘要翻译： 在螺旋扫描磁带录像机中，旋转磁头扫描仪包括奇数和偶数方位数据再现头和头轮上的奇数和偶数方位感测头以实现自动跟踪。 当再现信号包络不相等时，奇数和偶数方位感测头建立跟踪误差信号。 误差信号用于控制主导轴伺服器以保持正确的数据头对轨定位。

公开(公告)号：US5276559A

公开(公告)日：1994-01-04

申请号：US858740

申请日：1992-03-27

申请人： Nancy L. Sarkisian ,  James S. Bacon ,  Jose G. Aguilar ,  Robert J. Evans ,  Daniel Heritage ,  Boonsieng Benjauthrit

发明人： Nancy L. Sarkisian ,  James S. Bacon ,  Jose G. Aguilar ,  Robert J. Evans ,  Daniel Heritage ,  Boonsieng Benjauthrit

IPC分类号： C04B28/34 ,  G11B5/008 ,  G11B15/087 ,  G11B15/46 ,  G11B27/28 ,  G11B27/30 ,  G11B27/32 ,  H04N5/78 ,  H04N5/7826 ,  G11B5/02

CPC分类号： G11B27/323 ,  G11B15/087 ,  G11B15/463 ,  G11B27/3036 ,  G11B5/0086

摘要： A helical scan magnetic tape recorder includes a rotary scanner having magnetic heads which record and reproduce data on slant tracks of magnetic tape helically transported about the rotary scanner. Low frequency tones representing a time code or other digital information are recorded by the data heads of the rotary head scanner in the same lateral location such as preamble segments of the data tracks. The recorded time code is recovered by means of a stationary magnetic head. The recovered low frequency tones are converted into digital information such as a digital time code which provides tape location information for editing or searching purposes as well as other auxiliary information such as recorder serial number, data rate codes, etc.

摘要翻译： 螺旋扫描磁带录像机包括具有磁头的旋转扫描器，该磁头在围绕旋转扫描器螺旋输送的磁带的倾斜轨迹上记录和再现数据。 表示时间码或其他数字信息的低频音调由旋转磁头扫描仪的数据头记录在同一横向位置，例如数据磁道的前导段。 记录的时间码通过固定磁头来恢复。 恢复的低频音调被转换成诸如提供用于编辑或搜索的磁带位置信息的数字时间码以及诸如记录器序列号，数据速率代码等的其他辅助信息的数字信息。