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公开(公告)号：US4149198A
公开(公告)日：1979-04-10
申请号：US609825
申请日：1975-09-02
CPC分类号： G11B21/081 , G11B5/488 , G11B5/4886 , G11B5/5556 , G11B5/59688 , G11B21/10 , G11B5/4893
摘要： Method and apparatus for providing coarse and fine radial positioning of a multiple head assembly relative to the concentric tracks of a rotatable magnetic disk. In addition to a plurality of data heads, the head assembly also includes a pair of position sensing heads having skewed core gaps disposed at an angle with respect to each other. These position sensing heads are used for prerecording concentric position control tracks on the disk as well as for subsequent sensing of position control information during both coarse and fine positioning operations. The position control information prerecorded in the position control tracks is specially chosen so as to provide a pair of pulse trains during position sensing having characteristics such that highly accurate and reliable control of head position can be achieved based upon a detection of the coincidence relationship between predetermined pulses of the respective pulse trains.
摘要翻译： 用于提供多头组件相对于可旋转磁盘的同心轨道进行粗略和精细的径向定位的方法和装置。 除了多个数据头之外，头组件还包括一对位置感测头，其具有相对于彼此成一定角度设置的倾斜的芯间隙。 这些位置检测头用于预先记录盘上的同心位置控制轨迹，以及用于在粗略和精细定位操作期间随后感测位置控制信息。 预先记录在位置控制轨迹中的位置控制信息是特别选择的，以便在位置检测期间提供一对脉冲序列，其特征在于，可以基于检测预定位置之间的重合关系来实现对头部位置的高度准确和可靠的控制 脉冲列的脉冲。
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2.发明授权Track-on-data technique and associated system involving di-bit recording and associated di-gap transducers 失效轨道跟踪数据技术和相关系统涉及到DI-Bit记录和相关DI-GAP传感器
公开(公告)号：US4166282A
公开(公告)日：1979-08-28
申请号：US807155
申请日：1977-06-16
CPC分类号： G11B5/012 , G11B5/5526 , G11B5/56 , G11B5/59627 , G11B5/59633 , G11B5/59688
摘要： Techniques and associated apparatus for positioning a magnetic transducer system relative to a selected recording track on a magnetic recording disk.Record information (computer data bits) is recorded along one or more information zones (tracks) of the disk and head-positioning information is derived from this according to a novel "track-on-data" scheme. This scheme uses a "di-gap" transducer system comprising at least one related pair of transducer gaps aligned to register and sense information along a common record track, with the gaps being skewed oblique to the track direction, and aligned transverse to one another."Servo-bits" (providing head positioning information) and "work-bits" may both be recorded along a given track, these bits, like the mentioned gaps, being skewed relative to the track direction and aligned transverse to one another; the servo-bits in any one track thus being aligned parallel to one of the gaps while the companion work-bits are parallel to the other gap -- these gaps however being functionally interchangeable, with neither gap being dedicated to servo data or work data.Thus, once the di-gap head is moved along a given track, one gap will be aligned with the servo-bits and the other with the work-bits -- the two gaps being adapted to generate respective servo signals and data signals, the servo signal values (phase) automatically indicating the degree of head registration. Preferably, a related data encoding scheme establishes, for each track, the orientation of work-bits and servo-bits.
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公开(公告)号：US4419700A
公开(公告)日：1983-12-06
申请号：US970442
申请日：1978-12-18
CPC分类号： G11B5/56 , G11B5/012 , G11B5/5526 , G11B5/59661 , G11B5/59633
摘要： Techniques and associated apparatus for a magnetic disk transducing system adapted to record along spiral tracks in a Herringbone pattern, using a pair of orthogonal skew gaps, operating in tandem.In a preferred embodiment, a pair of commonly mounted heads contemporaneously transduce along two respective spiral oppositely-skewed tracks separated by three (3) track widths.
摘要翻译： 用于磁盘转换系统的技术和相关装置，其适于使用以串联方式工作的一对正交偏斜间隙以人字形图案沿着螺旋轨道进行记录。 在优选实施例中，一对共同安装的头同时沿着由三（3）个轨道宽度分开的两个相应的螺旋相对倾斜的轨道同时转换。
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公开(公告)号：US4327386A
公开(公告)日：1982-04-27
申请号：US71577
申请日：1979-08-31
申请人： Dean DeMoss , Norman S. Blessum , Ko Ko Gyi , Herbert U. Ragle
发明人： Dean DeMoss , Norman S. Blessum , Ko Ko Gyi , Herbert U. Ragle
CPC分类号： G11B17/021
摘要： Improved disk drive equipment is illustrated, being characterized by improved partitioning means for partitioning a pack of flexible magnetic recording disks, the partitioning means featuring "pneumatic commutator" means for distributing air streams to various inter-disk gaps in the pack--this commutator means constituting part of an external, rotationally stabilized jet-select apparatus.
摘要翻译： 示出了改进的磁盘驱动设备，其特征在于用于分配一组柔性磁记录盘的改进的分隔装置，具有“空气换向器”的分隔装置，其用于将空气流分配到包装中的各个盘间隙中 - 该换向器装置构成 外部旋转稳定的喷射选择装置的一部分。
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公开(公告)号：US4209810A
公开(公告)日：1980-06-24
申请号：US947557
申请日：1978-10-02
CPC分类号： G11B5/56 , G11B5/012 , G11B5/5526 , G11B5/59627 , G11B5/59633 , G11B5/59688
摘要： Techniques and associated apparatus for recording and detecting data; and especially for detecting and processing recorded data with greater accuracy.Recording information (computer data bits) is recorded in "A-form" or "B-form" as oblique parallel marks along adjacent information strips (tracks) on a medium, using a "di-gap" transducer system comprising at least one related pair of transducer gaps aligned to register and sense information along a common record track, with the gaps being skewed oblique to the track direction, and aligned transverse to one another to register with respective A-form or B-form marks.One form of mark is preferably recorded along the ODD-number tracks, at a first frequency (f.sub.1) while the other form of mark is recorded along the EVEN-number tracks at a second, different frequency (f.sub.2). Output detect means are arranged to distinguish between these frequencies for improved recording (--e.g., head-position-servo control).
摘要翻译： 用于记录和检测数据的技术和相关设备; 特别是用于更精确地检测和处理记录数据。 记录信息（计算机数据位）以“A形式”或“B形式”作为在介质上的相邻信息条（轨道）的斜平行标记记录，使用“二间隙”换能器系统，其包括至少一个相关 一对换能器间隙对准以沿着公共记录轨道记录和感测信息，其中间隙倾斜于轨道方向，并且彼此横向排列以与各自的A形或B形标记对准。 一种形式的标记优选地以第一频率（f1）沿着ODD号码轨道记录，而另一种形式的标记沿着第二不同频率（f2）的EVEN号轨迹记录。 输出检测装置被布置为区分这些频率以改善记录（例如，头位置伺服控制）。
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公开(公告)号：US4688119A
公开(公告)日：1987-08-18
申请号：US800063
申请日：1985-11-20
申请人： Norman S. Blessum
发明人： Norman S. Blessum
CPC分类号： G11B5/59688
摘要： A disk drive control system including servo sectors written on a disk, with each sector containing three sets of marker pulses arranged so that three adjacent marker pulses from each of the sets spans two tracks. The pulses each comprise high frequency sinusoidal signals. Servo control depends upon the pulse amplitudes sensed by the read/write head while traversing a servo sector. The system includes an amplifier to rectify and amplify the high frequency signals, a sample-and-hold circuit to hold at least three value representative of the amplified high frequency signals, and synchronizing means to synchronize the sample-and-hold circuit such that the first value sampled and held is representative of the amplitude of the first pulse read in a servo sector, the second value sampled and held is representative of the amplitude of the second pulse read in the servo sector, and so forth. A multiplexing circuit provides multiplexed signals sequentially representative of values sampled.
摘要翻译： 一种磁盘驱动器控制系统，包括写在磁盘上的伺服扇区，每个扇区包含三组标记脉冲，以使来自每个组的三个相邻的标记脉冲跨越两个磁道。 脉冲各自包括高频正弦信号。 伺服控制取决于读/写头在扫描伺服扇区时感测到的脉冲幅度。 该系统包括用于对高频信号进行整流和放大的放大器，用于保持表示放大的高频信号的至少三个值的采样和保持电路，以及同步装置以使采样和保持电路同步，使得 采样和保持的第一值表示在伺服扇区中读取的第一脉冲的幅度，采样和保持的第二值表示在伺服扇区中读取的第二脉冲的幅度，等等。 复用电路提供顺序代表采样值的复用信号。
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公开(公告)号：US4502082A
公开(公告)日：1985-02-26
申请号：US970578
申请日：1978-12-18
CPC分类号： G11B5/59688 , G11B5/012 , G11B5/5526 , G11B5/56 , G11B5/59661 , G11B5/59633
摘要： Techniques and associated apparatus for a magnetic disk transducing system adapted to record along spiral tracks in a Herringbone pattern, using a pair of orthogonal skew gaps, operating in tandem.
摘要翻译： 用于磁盘转换系统的技术和相关装置，其适于使用以串联方式工作的一对正交偏斜间隙以人字形图案沿着螺旋轨道进行记录。
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公开(公告)号：US4148080A
公开(公告)日：1979-04-03
申请号：US820868
申请日：1977-08-01
CPC分类号： G11B5/012 , G11B5/5526 , G11B5/56 , G11B5/59627 , G11B5/59633 , G11B5/59688
摘要： Techniques and associated apparatus for recording and detecting data; and especially for detecting and processing recorded data with greater accuracy.Record information (computer data bits) is recorded along one or more information zones (tracks) of a medium. Head-positioning information may be derived from this, using a "di-gap" transducer system comprising at least one related pair of transducer gaps aligned to register and sense information along a common record track, with the gaps being skewed oblique to the track direction, and aligned transverse to one another."Servo-bits" (providing head positioning information) and "work-bits" may both be recorded along a given track, these bits, like the mentioned gaps, being skewed relative to the track direction and aligned transverse to one another; the servo-bits in any one track thus being aligned parallel to one of the gaps while the companion work-bits are parallel to the other gap, -- these gaps however being functionally interchangeable, with neither gap being dedicated to servo data or work data.Di-bits may be recorded (or pairs of parallel bits) in adjacent tracks but distinguished by recorded-frequency. Also, data read-out may be "clocked" using means adaptive to varying data rate.
摘要翻译： 用于记录和检测数据的技术和相关设备; 特别是用于更精确地检测和处理记录数据。
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