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154 条记录 (耗时 0.011 秒)

    Means for attaching magnetic heads
    12.
    发明公开
    Means for attaching magnetic heads 失效
    连接磁头的手段

    公开(公告)号：EP0191622A3

    公开(公告)日：1987-09-30

    申请号：EP86300899

    申请日：1986-02-10

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Koizumi, Satoru ,  Teshima, Daisuke ,  Katayama, Yoshio

    IPC分类号： G11B25/06 ,  G11B05/48 ,  G11B05/56

    CPC分类号： G11B5/488 ,  G11B5/56 ,  G11B25/063

    摘要： @ This invention relates to a means for attaching magnetic heads to a tape recorder of the type containing a plurality of tape cassettes one on top of another within a cassette compartment section and a plurality of magnetic heads on a slidable plate corresponding individually to these tape cassettes. A plurality of supporting means are secured on the slidable plate sequentially away from the tape cassettes and the magnetic heads are secured individually on these supporting means at the different heights of and opposite to the tape cassettes such that azimuthal adjustments of the magnetic heads can be effected independently and easily.

    Digital alignment diagnostic disk
    13.
    发明公开
    Digital alignment diagnostic disk 失效
    数字对位诊断盘

    公开(公告)号：EP0179299A3

    公开(公告)日：1987-01-14

    申请号：EP85112177

    申请日：1985-09-25

    申请人： VERBATIM CORPORATION

    发明人： Sturtevant-Stuart, Ronald M.

    IPC分类号： G11B05/012

    CPC分类号： G11B20/00586 ,  G11B5/012 ,  G11B5/455 ,  G11B5/56 ,  G11B5/59627 ,  G11B19/00 ,  G11B20/00086 ,  G11B21/24 ,  G11B33/10 ,  G11B2220/2508

    摘要： An alignment disk including data tracks written in a spiral configuration, through the use of microstepping techniques, to accurately test a variety of transducer head parameters including head alignment, resolution and offset. The tracks include standard spiral tracks, S-shaped clamping spiral tracks and bordered spiral tracks, comprising a sequence of discrete address blocks each containing unique identifying information. The spacing of each address block is precisely known and because each is separately identifiable transducer head location can be precisely ascertained. The microstepping technique may also be employed to create a copy protected disk for disk drives having half-track read and write capabilities.

    Alignment disk and method for producing it
    14.
    发明公开
    Alignment disk and method for producing it 失效
    调整板和它们的制备方法。

    公开(公告)号：EP0179299A2

    公开(公告)日：1986-04-30

    申请号：EP85112177.2

    申请日：1985-09-25

    申请人： VERBATIM CORPORATION

    发明人： Sturtevant-Stuart, Ronald M.

    IPC分类号： G11B5/012

    CPC分类号： G11B20/00586 ,  G11B5/012 ,  G11B5/455 ,  G11B5/56 ,  G11B5/59627 ,  G11B19/00 ,  G11B20/00086 ,  G11B21/24 ,  G11B33/10 ,  G11B2220/2508

    摘要： An alignment disk including data tracks written in a spiral configuration, through the use of microstepping techniques, to accurately test a variety of transducer head parameters including head alignment, resolution and offset. The tracks include standard spiral tracks, S-shaped clamping spiral tracks and bordered spiral tracks, comprising a sequence of discrete address blocks each containing unique identifying information. The spacing of each address block is precisely known and because each is separately identifiable transducer head location can be precisely ascertained. The microstepping technique may also be employed to create a copy protected disk for disk drives having half-track read and write capabilities.

    Magnetic recording devices
    16.
    发明公开
    Magnetic recording devices 失效
    Vorrichtungen zur magnetischen Aufzeichnung。

    公开(公告)号：EP0121384A1

    公开(公告)日：1984-10-10

    申请号：EP84301986.0

    申请日：1984-03-23

    申请人： SONY CORPORATION

    发明人： Shimpuku, Yoshihide

    IPC分类号： G11B5/52

    CPC分类号： G11B5/09 ,  G11B5/488 ,  G11B5/534 ,  G11B5/56

    摘要： In a magnetic recording device, digital data is recorded with higher density in such a manner that plural recording tracks (5) are sequentially formed on a magnetic recording medium (4). Any two adjoining tracks (5a, 5b) are formed by separate magnetic heads (3a, 3b) whose azimuth angles are equal to +θ, -θ, with the absolute value of the angle 6 being selected to satisfy the relationship 16°≦0≦22°, in a manner such that the crosstalk level between any two neighbouring tracks may be reduced without affecting the signal-to-noise ratio.

    摘要翻译： 在磁记录装置中，数字数据以更高密度记录，使得在磁记录介质（4）上依次形成多个记录磁道（5）。 任何两个相邻的轨道（5a，5b）由方位角等于+θ，θ的独立磁头（3a，3b）形成，其中角度θ的绝对值被选择以满足关系16° = 0

    Optical recording device
    17.
    发明公开
    Optical recording device 失效
    光学拾取装置。

    公开(公告)号：EP0061194A2

    公开(公告)日：1982-09-29

    申请号：EP82102420.5

    申请日：1982-03-23

    申请人： KABUSHIKI KAISHA TOSHIBA

    发明人： Higashiyama, Yasushi ,  Chiba, Shu ,  Sawazaki, Norikazu

    IPC分类号： G11B5/008 ,  G11B7/08

    CPC分类号： G11B5/56 ,  G11B5/0086 ,  G11B5/86 ,  G11B7/0031

    摘要： An optical recording device for forming recording tracks of an indented pattern on a magnetic recording tape comprises a rotary drum (21) which has at least two windows (38, 39), the magnetic recording tape (11) being driven obliquely on the windows along an outer surface of the drum, and an optical system (32), disposed inside the rotary drum, for converting a modulated laser beam (30) incident on the optical system into two slit beams, major axes of sections of which form a predetermined angle and for emitting the slit beams on the magnetic recording tape through the windows, whereby the recording tracks of the indented pattern in correspondence with the signal are formed obliquely on the magnetic recording tape with respect to a longitudinal direction of the magnetic recording tape by the slit beams so as to form different azimuths between adjacent recording tracks.