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公开(公告)号：EP0638897A2
公开(公告)日：1995-02-15
申请号：EP94305792.7
申请日：1994-08-04
IPC分类号： G11B15/467
CPC分类号： G11B15/463 , G11B5/588 , G11B15/4672 , G11B15/4678 , G11B15/4738
摘要： A tracking error detecting circuit is used in a magnetic reproducing apparatus for reproducing an information signal from tracks (2a,2b,2c) which are formed on a magnetic tape (8) obliquely in a longitudinal direction of the magnetic tape. The tracks have selectively recorded thereon a pilot signal (F 1 ,F 2 ) multiplexed with the information signal. The tracking error detecting circuit comprises: a rotating magnetic head (1) scanning the tracks for reproducing the information signal on which the pilot signal is selectively multiplexed to obtain a reproduced signal; a comparator (12) for comparing a level of the reproduced signal with a specified level and for issuing a binary signal representing a comparison result; and a level detecting circuit (3a,4a,3b,4b) for detecting a level of the pilot signal contained in the reproduced signal from an output of the comparator.
摘要翻译： 一种跟踪误差检测电路被用于磁再现设备中，用于从磁带（8）上沿着磁带的纵向方向倾斜地再现来自磁道（2a，2b，2c）的信息信号。 轨道选择性地在其上记录与信息信号复用的导频信号（F1，F2）。 该跟踪误差检测电路包括：旋转磁头（1），扫描轨道以再现其上选择性地多路复用导频信号的信息信号，以获得再现信号; 比较器（12），用于将再现信号的电平与指定电平进行比较，并发出表示比较结果的二进制信号; 和一个电平检测电路（3a，4a，3b，4b），用于检测包含在来自比较器输出的再现信号中的导频信号的电平。
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公开(公告)号：EP0638897A3
公开(公告)日：1996-12-27
申请号：EP94305792.7
申请日：1994-08-04
IPC分类号： G11B15/467
CPC分类号： G11B15/463 , G11B5/588 , G11B15/4672 , G11B15/4678 , G11B15/4738
摘要： A tracking error detecting circuit is used in a magnetic reproducing apparatus for reproducing an information signal from tracks (2a,2b,2c) which are formed on a magnetic tape (8) obliquely in a longitudinal direction of the magnetic tape. The tracks have selectively recorded thereon a pilot signal (F 1 ,F 2 ) multiplexed with the information signal. The tracking error detecting circuit comprises: a rotating magnetic head (1) scanning the tracks for reproducing the information signal on which the pilot signal is selectively multiplexed to obtain a reproduced signal; a comparator (12) for comparing a level of the reproduced signal with a specified level and for issuing a binary signal representing a comparison result; and a level detecting circuit (3a,4a,3b,4b) for detecting a level of the pilot signal contained in the reproduced signal from an output of the comparator.
摘要翻译： 在磁回放装置中使用跟踪误差检测电路，用于从在磁带的纵向上倾斜地形成在磁带上的磁道再现信息信号。 轨道上选择性地记录有与信息信号复用的导频信号。 跟踪误差检测电路包括：旋转磁头扫描磁道，用于再现其上选择性地复用导频信号的信息信号，以获得再现信号; 比较器，用于将再现信号的电平与指定电平进行比较，并用于发出表示比较结果的二进制信号; 以及电平检测电路，用于从比较器的输出端检测包含在再现信号中的导频信号的电平。
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公开(公告)号：EP0677841B1
公开(公告)日：2001-06-20
申请号：EP94302617.9
申请日：1994-04-13
发明人： Honjo, Kenichi , Maruoka, Toshihiko , Isaka, Haruo , Gotou, Makoto , Ichikawa, Kei , Hashimoto, Kiyokazu , Shimotashiro, Masafumi
IPC分类号： G11B15/18 , G11B15/467 , G11B15/087 , G11B15/12
CPC分类号： G11B15/087 , G11B15/125 , G11B15/1875 , G11B15/4678
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公开(公告)号：EP0638897B1
公开(公告)日：2000-03-22
申请号：EP94305792.7
申请日：1994-08-04
IPC分类号： G11B15/467 , G11B15/473 , G11B5/592
CPC分类号： G11B15/463 , G11B5/588 , G11B15/4672 , G11B15/4678 , G11B15/4738
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公开(公告)号：EP0677841A1
公开(公告)日：1995-10-18
申请号：EP94302617.9
申请日：1994-04-13
发明人： Honjo, Kenichi , Maruoka, Toshihiko , Isaka, Haruo , Gotou, Makoto , Ichikawa, Kei , Hashimoto, Kiyokazu , Shimotashiro, Masafumi
IPC分类号： G11B15/18 , G11B15/467 , G11B15/087 , G11B15/12
CPC分类号： G11B15/087 , G11B15/125 , G11B15/1875 , G11B15/4678
摘要： A magnetic recording and reproducing apparatus comprises a recorder for recording information signals so as to form tracks obliquely on a magnetic tape, and recording pilot signals so that the frequency may differ between different modes such as SP and LP, a reproducing head for reproducing recorded information, an error detecting circuit for comparing the level difference of pilot signals recorded in both tracks adjacent to the track to be scanned by the reproducing head and issuing a tracking error signal, and a controller for controlling the feed of the magnetic tape so that the tracking error signal may be balanced. Preferably, in LP mode, pilot signal of higher frequency than in SP mode is recorded. In a tracking error detector for magnetic recording and reproducing apparatus for detecting pilot signal, reproduced signals are sampled at a frequency at a common multiple of each pilot frequency, a pilot signal is detected, and a tracking error signal is issued.
摘要翻译： 一种磁记录和再现设备包括：记录器，用于记录信息信号以便在磁带上倾斜地形成磁道，并记录导频信号，使得频率可以在诸如SP和LP的不同模式之间不同;用于再现记录信息的再现磁头 ，一个误差检测电路，用于比较记录在与由再现磁头扫描的磁道相邻的两个磁道中的导频信号的电平差，并发出一个跟踪误差信号;以及一个控制器，用于控制磁带的馈送，使得跟踪 错误信号可能是平衡的。 优选地，在LP模式下，记录频率高于SP模式的导频信号。 在用于检测导频信号的磁记录和再现设备的跟踪误差检测器中，以每个导频的公倍数的频率对再现信号进行采样，检测导频信号并发出跟踪误差信号。
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