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    • 3. 发明授权
    • Method and apparatus for servo positioning in a direct access storage device with a transducer read element width greater than ⅓ and less than ½ width of a data cylinder
    • 用于伺服定位的方法和装置,其具有传感器读取元件宽度大于数据圆柱体的1/3和小于1/2的直接存取存储装置
    • US06219197B1
    • 2001-04-17
    • US08632639
    • 1996-04-15
    • Dana Henry BrownMark David HagenJohn Charles Purkett
    • Dana Henry BrownMark David HagenJohn Charles Purkett
    • G11B5596
    • G11B5/59633
    • A phase modulated servo method and apparatus provide acceptable position linearity for servo positioning with a narrow transducer head in a disk file. The disk file includes at least one disk mounted for rotation about an axis and the disk has at least one disk surface for storing data and has at least one transducer mounted for movement across the disk surface for writing to and for reading data and servo patterns from the disk surface. The transducer includes a read element and a write element. The read element has a width less than the write element and the read element width is greater than ⅓ of a data cylinder and less than ½ of a data cylinder. A servo pattern is written on the data disk surface having a track pitch of less than ½ of a data cylinder and the servo pattern repeats in a selected binary number of data cylinders.
    • 相位调制伺服方法和装置为磁盘文件中具有窄传感器头的伺服定位提供可接受的位置线性。 磁盘文件包括至少一个安装用于围绕轴旋转的盘,并且盘具有用于存储数据的至少一个盘表面,并且具有至少一个换能器,其安装成用于跨越盘表面移动以便写入并用于从数据和伺服模式读取数据和伺服模式 磁盘表面。 换能器包括读取元件和写入元件。 读取元素的宽度小于写入元素,读取元素宽度大于数据圆柱体的1/3,而小于数据圆柱体的1/2。 伺服模式被写入具有小于数据气缸的1/2的轨道间距的数据盘表面上,并且伺服模式以选定的二进制数量的数据气缸重复。
    • 5. 发明授权
    • Self servo writing file
    • 自动伺服写入文件
    • US06040955A
    • 2000-03-21
    • US287477
    • 1994-08-08
    • Dana Henry BrownThomas Charles ChristensenEarl A. CunninghamWayne A. Rogelstad
    • Dana Henry BrownThomas Charles ChristensenEarl A. CunninghamWayne A. Rogelstad
    • G11B5/596G11B27/32G11B21/10
    • G11B5/59633G11B27/322
    • A self servo writing file and method for writing servo patterns in a direct access storage device are provided. First servo information is written on a data storage media at a first crash stop. The transducer heads are moved offset from the written servo information while reading the last written servo information until the detected servo signal equals a predetermined value. Then servo information is written on the data storage media responsive to the detected servo signal equal to the predetermined value. The moving and writing steps are sequentially repeating until a second crash stop is reached. A quad-burst servo amplitude pattern or phase pattern can be used for the servo information. The servo writing method is adapted easily for many different servo options. When the file uses a hybrid servo or sector servo, the other surfaces can be written by duplicating the servo bursts with a high bandwidth servo system of the file. Alternatively, the servo writing steps can be repeated for each of the other surfaces for providing head dependent pitch. Variable track pitch can be provided by selectively varying the predetermined value compared with the detected servo signal.
    • 提供一种用于在直接存取存储装置中写入伺服模式的自伺服写入文件和方法。 第一伺服信息在第一次碰撞停止时被写入数据存储介质。 当读取最后写入的伺服信息直到检测到的伺服信号等于预定值时,传感器头与写入的伺服信息偏移。 然后根据检测到的等于预定值的伺服信号将伺服信息写入数据存储介质上。 顺序重复移动和写入步骤,直到达到第二次碰撞停止。 伺服信息可以使用四脉冲串伺服幅度模式或相位模式。 伺服写入方式适用于许多不同的伺服选项。 当文件使用混合伺服或扇区伺服时,其他​​表面可以通过用文件的高带宽伺服系统复制伺服脉冲串来写入。 或者,可以针对每个其他表面重复伺服写入步骤,以提供与头部相关的音调。 可以通过与检测到的伺服信号相比选择性地改变预定值来提供可变轨道间距。
    • 6. 发明授权
    • Self servo writing file using the widest head
    • 自动写入文件使用最宽的头
    • US5949603A
    • 1999-09-07
    • US224792
    • 1999-01-04
    • Dana Henry BrownThomas Charles ChristensenEarl A. CunninghamWayne A. Rogelstad
    • Dana Henry BrownThomas Charles ChristensenEarl A. CunninghamWayne A. Rogelstad
    • G11B5/596G11B27/32G11B21/10
    • G11B5/59633G11B27/322
    • A self servo writing file and method for writing servo patterns in a direct access storage device are provided. First servo information is written on a data storage media at a first crash stop. The transducer heads are moved offset from the written servo information while reading the last written servo information until the detected servo signal equals a predetermined value. Then servo information is written on the data storage media responsive to the detected servo signal equal to the predetermined value. The moving and writing steps are sequentially repeated until a second crash stop is reached. A quad-burst servo amplitude pattern or phase pattern can be used for the servo information. The servo writing method is adapted easily for many different servo options. When the file uses a hybrid servo or sector servo, the other surfaces can be written by duplicating the servo bursts with a high bandwidth servo system of the file. Alternatively, the servo writing steps can be repeated for each of the other surfaces for providing head dependent pitch. Variable track pitch can be provided by selectively varying the predetermined value compared with the detected servo signal.
    • 提供一种用于在直接存取存储装置中写入伺服模式的自伺服写入文件和方法。 第一伺服信息在第一次碰撞停止时被写入数据存储介质。 当读取最后写入的伺服信息直到检测到的伺服信号等于预定值时,传感器头与写入的伺服信息偏移。 然后根据检测到的等于预定值的伺服信号将伺服信息写入数据存储介质上。 顺序重复移动和写入步骤,直到达到第二次碰撞停止。 伺服信息可以使用四脉冲串伺服幅度模式或相位模式。 伺服写入方式适用于许多不同的伺服选项。 当文件使用混合伺服或扇区伺服时,其他​​表面可以通过用文件的高带宽伺服系统复制伺服脉冲串来写入。 或者,可以针对每个其他表面重复伺服写入步骤,以提供与头部相关的音调。 可以通过与检测到的伺服信号相比选择性地改变预定值来提供可变轨道间距。