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1. 发明公开

EP0535737A3 Arrangement for reproducing a digital signal from a track on a magnetic record carrier using a read head with a MR element 失效
标题翻译：使用读取头与磁盘元件在磁记录载体上从轨道重现数字信号的安排
公开(公告)号：EP0535737A3
公开(公告)日：1993-05-12
申请号：EP92202945.9
申请日：1992-09-25
申请人： Philips Electronics N.V.
发明人： Bombeeck, John Maria, c/o INT. OCTROOIBUREAU B.V.
IPC分类号： G11B5/09 , G11B20/10
CPC分类号： G11B20/10046 , G11B5/09 , G11B5/3903 , G11B5/3922 , G11B20/10009
摘要： An arrangement for reproducing a digital signal from a track on a magnetic record carrier (20) comprises a magnetic read head (21) having a magneto resistive element (107), and an equalizer filter means (23) for equalizing the output signal of the read head. The equalizer filter means (23) includes an IIR filter means (29) and a FIR filter means (30). The IIR filter means (29) equalizes magnitude and group delay of the signal applied to its input in a low frequency region of the signal frequency range. The FIR filter means equalizes at least the magnitude of the signal applied to its input in a higher frequency region of the signal frequency range. Viewed in the direction of transport of the record carrier, the MR head has a front side and a back side. One of the sides (41) has a magnetic shielding for the MR element (107) which is larger than the magnetic shielding of the other side (40). The MR head (21) is positioned relative to the track so that the front side (40) has the lesser magnetic shielding.

2. 发明授权

EP0535737B1 Arrangement for reproducing a digital signal from a track on a magnetic record carrier using a read head with a MR element 失效
标题翻译：对于使用具有MR元件的写入头在记录介质上从轨道重放数字信号的装置
公开(公告)号：EP0535737B1
公开(公告)日：1997-06-18
申请号：EP92202945.9
申请日：1992-09-25
申请人： Philips Electronics N.V.
发明人： Bombeeck, John Maria, c/o INT. OCTROOIBUREAU B.V.
IPC分类号： G11B5/09 , G11B20/10
CPC分类号： G11B20/10046 , G11B5/09 , G11B5/3903 , G11B5/3922 , G11B20/10009

3. 发明公开

EP0535737A2 Arrangement for reproducing a digital signal from a track on a magnetic record carrier using a read head with a MR element 失效
标题翻译：对于使用具有MR元件的写入头在记录介质上再现从轨道的数字信号的装置。
公开(公告)号：EP0535737A2
公开(公告)日：1993-04-07
申请号：EP92202945.9
申请日：1992-09-25
申请人： Philips Electronics N.V.
发明人： Bombeeck, John Maria, c/o INT. OCTROOIBUREAU B.V.
IPC分类号： G11B5/09 , G11B20/10
CPC分类号： G11B20/10046 , G11B5/09 , G11B5/3903 , G11B5/3922 , G11B20/10009
摘要： An arrangement for reproducing a digital signal from a track on a magnetic record carrier (20) comprises a magnetic read head (21) having a magneto resistive element (107), and an equalizer filter means (23) for equalizing the output signal of the read head. The equalizer filter means (23) includes an IIR filter means (29) and a FIR filter means (30). The IIR filter means (29) equalizes magnitude and group delay of the signal applied to its input in a low frequency region of the signal frequency range. The FIR filter means equalizes at least the magnitude of the signal applied to its input in a higher frequency region of the signal frequency range.
Viewed in the direction of transport of the record carrier, the MR head has a front side and a back side. One of the sides (41) has a magnetic shielding for the MR element (107) which is larger than the magnetic shielding of the other side (40).
The MR head (21) is positioned relative to the track so that the front side (40) has the lesser magnetic shielding.
摘要翻译：对于从轨道的磁性记录载体上重放数字信号的装置（20）包括一个磁性读出头（21），其具有磁致电阻元件（107），并在均衡滤波器装置（23），用于均衡的输出信号读数头。均衡滤波器装置（23）包括在IIR滤波器装置（29）和一个FIR滤波器装置（30）。 IIR滤波器装置（29）中均衡所述信号的频率范围的低频区域施加到其输入端的信号的幅度和群延迟。 FIR滤波器至少均衡手段的信号的频率范围的较高频率区域中施加到其输入端的信号的幅度。在记录载体的传输方向看时，MR磁头具有一个前侧和后侧。一侧面（41）具有用于对MR元件的磁屏蔽（107）的所有比所述另一侧（40）的磁屏蔽大。 MR磁头（21）相对于所述轨道象前侧（40）具有较小的磁屏蔽地定位。

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