Recording and/or reproducing device with a magnetic head having an
optimized crystal orientation
    2.
    发明授权
    Recording and/or reproducing device with a magnetic head having an optimized crystal orientation 失效
    具有具有优化晶体取向的磁头的记录和/或再现装置

    公开(公告)号:US5933300A

    公开(公告)日:1999-08-03

    申请号:US24633

    申请日:1998-02-17

    摘要: Recording and/or reproducing device (1) having at least one magnetic head (8, 9) provided for scanning a magnetic record carrier (6) and having a lead-in core limb (34) and a lead-out core limb (35) each consisting of a monocrystalline ferrite and constituting a transducing gap (37), in which the lead-in core limb (34) has a mechanical main direction (39) in a -direction of its monocrystalline ferrite, which main direction encloses an acute angle .THETA..sub.E with respect to the transducing gap (37), and in which the lead-out core limb (35) has a mechanical main direction (41) in a -direction of its monocrystalline ferrite, which main direction encloses a second acute angle .THETA..sub.A with respect to the transducing gap (37), the two acute angles .THETA..sub.E and .THETA..sub.A in the magnetic head (8, 9) being determined in such a way that ferrite material is uniformly worn off the two core limbs (34, 35) at essentially the same wear rate (K) when there is a relative movement between a record carrier (6) and the magnetic head (8, 9).

    摘要翻译: 具有至少一个磁头(8,9)的记录和/或再现装置(1),用于扫描磁记录载体(6)并具有引入芯分支(34)和引出芯分支(35) ),其构成单晶铁氧体并构成换向间隙(37),其中引入铁芯臂(34)在其单晶铁氧体的<100>方向具有机械主方向(39),主方向 相对于换能间隙(37)包围锐角THETA E,其中引出铁芯(35)在其单晶铁氧体的<100>方向上具有机械主方向(41),其主要 方向相对于换能间隙(37)包围第二锐角THETA A,磁头(8,9)中的两个锐角THETA E和THETA A被确定为使得铁氧体材料被均匀地磨损 当记录c之间存在相对运动时,两个核心肢体(34,35)具有基本上相同的磨损率(K) (6)和磁头(8,9)。

    Apparatus for recording and reproducing video and audio signals in either analog or digital form
    3.
    发明授权
    Apparatus for recording and reproducing video and audio signals in either analog or digital form 失效
    用于以模拟或数字形式记录和再现视频和音频信号的装置

    公开(公告)号:US06246830B1

    公开(公告)日:2001-06-12

    申请号:US09329085

    申请日:1999-06-09

    申请人: Ulrich Traxlmayr

    发明人: Ulrich Traxlmayr

    IPC分类号: H04N57824

    摘要: An apparatus for recording and reproducing video and audio signals in either analog or digital form. The heads are arranged to conform with existing analog standards, such as VHS, and yet are also able to record in digital form in adjacent non-overlapping tracks. In a preferred embodiment, one pair of heads is arranged with a small azimuth angle (+/−6 degrees), and another pair is arranged with a larger second azimuth angle (+/−30 degrees), conforming to the VHS standard, but the head width and location are modified compared to the standard such as to allow recording and reproducing both VHS as well as digital tapes.

    摘要翻译: 用于以模拟或数字形式记录和再现视频和音频信号的装置。 这些磁头被安排为符合现有的模拟标准,例如VHS,并且还能够以相邻的非重叠轨迹的数字形式进行记录。 在一个优选实施例中,一对头部以小的方位角(+/- 6度)排列,另一对以更大的第二方位角(+/- 30度)排列,符合VHS标准,但是 与标准相比,头宽度和位置被修改,以允许记录和再现VHS以及数字磁带。

    Magnetic head having soft-magnetic material cladded core limb faces
    5.
    发明授权
    Magnetic head having soft-magnetic material cladded core limb faces 失效
    具有软磁材料的磁头

    公开(公告)号:US5210668A

    公开(公告)日:1993-05-11

    申请号:US688016

    申请日:1991-04-19

    IPC分类号: G11B5/187 G11B5/23 G11B5/235

    CPC分类号: G11B5/232 G11B5/1878

    摘要: Magnetic head comprising a magnetic core having two core limbs (1,3) formed from a ferrite, which core limbs constitute two core faces located opposite each other, at least one of said core faces having a cladding of a soft-magnetic material having a higher saturation magnetisation than the ferrite, and a non-magnetic transducing gap (11) present between the core faces and having at least one layer of a first metallic material (21) and bonded layers (23) of a second metallic material. The cladding comprises a first cladding layer (15) of an alloy based on Ni-Fe on which a second cladding layer (17) of an amorphous alloy based on Co-Ti and/or Zr and/or Hf-Nb and/or Ta is provided, while the first metallic material, chosen from the group of Mo, Ti, Cr and NiCr, is directly provided on the amorphous alloy of the cladding. (FIG. 2).

    摘要翻译: 磁头包括具有由铁氧体形成的两个铁芯臂(1,3)的磁芯,所述铁芯臂构成彼此相对的两个芯面,所述芯面中的至少一个具有软磁材料的包层,所述软磁材料具有 存在比铁氧体高的饱和磁化,以及存在于芯面之间并且具有至少一层第一金属材料(21)和第二金属材料的接合层(23)的非磁性换能间隙(11)。 所述包层包括基于Ni-Fe的合金的第一包覆层(15),其上形成基于Co-Ti和/或Zr和/或Hf-Nb和/或Ta的非晶合金的第二包覆层(17) 提供了从Mo,Ti,Cr和NiCr组中选出的第一金属材料直接设置在包层的非晶态合金上。 (图2)。