公开(公告)号：US6002541A

公开(公告)日：1999-12-14

申请号：US884828

申请日：1997-06-30

申请人： Karl Arnold Belser ,  Ju-Hi Hong ,  Satoshi Yamamoto

发明人： Karl Arnold Belser ,  Ju-Hi Hong ,  Satoshi Yamamoto

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： In accordance with the present invention a storage device servo control system that positions a head relative to multiple tracks of a storage medium includes a servo signal filter that receives a readback signal from the head and produces filtered servo signal data samples, a servo demodulator that receives the filtered readback servo signal from the servo signal filter and produces a position error signal that indicates the head position relative to a track using a demodulation scheme selected in accordance with a track width profile of the storage device, and includes a servo controller that determines the demodulation scheme to be used by the servo demodulator and that processes the position error signal to maintain the head centered relative to the track.

摘要翻译： 根据本发明，一种相对于存储介质的多个磁道定位磁头的存储装置伺服控制系统包括：伺服信号滤波器，其从头部接收回读信号并产生滤波后的伺服信号数据采样;伺服解调器，其接收 来自伺服信号滤波器的滤波后的回读伺服信号，并且使用根据存储装置的磁道宽度分布选择的解调方案产生指示相对于磁道的磁头位置的位置误差信号，并且包括确定 解调方案由伺服解调器使用，并且处理位置误差信号以使头相对于轨道居中。

公开(公告)号：US5999351A

公开(公告)日：1999-12-07

申请号：US709204

申请日：1996-08-27

申请人： David William Albrecht ,  Wayne Leung Cheung ,  Kok-Kia Chew ,  Ju-Hi Hong ,  John Jeffrey Stephenson

发明人： David William Albrecht ,  Wayne Leung Cheung ,  Kok-Kia Chew ,  Ju-Hi Hong ,  John Jeffrey Stephenson

IPC分类号： G11B5/012 ,  G11B5/48 ,  G11B5/596 ,  G11B21/08 ,  G11B5/09

CPC分类号： G11B21/083 ,  G11B5/012 ,  G11B5/4886 ,  G11B5/59605

摘要： A multi-track density direct access storage device is disclosed. In accordance with a preferred embodiment of the present invention, a direct access storage device for data storage within a data processing system comprises a housing, a rotatable spindle, at least one disk, and several heads. The disk is fixedly mounted to the rotatable spindle, and the rotatable spindle is rotated by a motor within the housing. A first disk surface of the disk has a first track density and a second disk surface of the disk has a second track density; wherein the second track density is preferably greater than the first track density. Each of the several heads contains a transducer to read and write information from and to the disk during the disk rotation. Under this configuration, the lower storage density first disk surface is utilized to store data that are frequently accessed while the higher storage density second disk surface is for storage capacity supplementation such that the total data storage capacity of the direct access storage device can be increased without degrading the data-accessing performance.

摘要翻译： 公开了一种多轨密度直接存取存储装置。 根据本发明的优选实施例，用于数据处理系统内的数据存储的直接存取存储装置包括壳体，可旋转主轴，至少一个盘和多个头部。 盘被固定地安装到可旋转的主轴上，并且可旋转的主轴由壳体内的电动机旋转。 盘的第一盘表面具有第一轨道密度，盘的第二盘表面具有第二轨迹密度; 其中第二轨道密度优选地大于第一轨道密度。 在磁盘旋转期间，几个磁头中的每一个都包含一个读取和写入信息的传感器。 在这种配置下，较低的存储密度第一磁盘表面用于存储经常访问的数据，而较高的存储密度第二磁盘表面用于存储容量补充，使得直接存取存储设备的总数据存储容量可以在没有 降低数据访问性能。

公开(公告)号：US06393511B1

公开(公告)日：2002-05-21

申请号：US09246513

申请日：1999-02-09

申请人： David William Albrecht ,  Wayne Leung Cheung ,  Kok-Kia Chew ,  Ju-Hi Hong ,  John Jeffrey Stephenson

发明人： David William Albrecht ,  Wayne Leung Cheung ,  Kok-Kia Chew ,  Ju-Hi Hong ,  John Jeffrey Stephenson

IPC分类号： G06F1200

CPC分类号： G11B21/083 ,  G11B5/012 ,  G11B5/4886 ,  G11B5/59605

摘要： A multi-track density direct access storage device is disclosed. In accordance with a preferred embodiment of the present invention, a direct access storage device for data storage within a data processing system comprises a housing, a rotatable spindle, at least one disk, and several heads. The disk is fixedly mounted to the rotatable spindle, and the rotatable spindle is rotated by a motor within the housing. A first disk surface of the disk has a first track density and a second disk surface of the disk has a second track density; wherein the second track density is preferably greater than the first track density. Each of the several heads contains a transducer to read and write information from and to the disk during the disk rotation. Under this configuration, the lower storage density it first disk surface is utilized to store data that are frequently accessed while the higher storage density second disk surface is for storage capacity supplementation such that the total data storage capacity of the direct access storage device can be increased without degrading the data-accessing performance.

摘要翻译： 公开了一种多轨密度直接存取存储装置。 根据本发明的优选实施例，用于数据处理系统内的数据存储的直接存取存储装置包括壳体，可旋转主轴，至少一个盘和多个头部。 盘被固定地安装到可旋转的主轴上，并且可旋转的主轴由壳体内的电动机旋转。 盘的第一盘表面具有第一轨道密度，盘的第二盘表面具有第二轨迹密度; 其中第二轨道密度优选地大于第一轨道密度。 在磁盘旋转期间，几个磁头中的每一个都包含一个读取和写入信息的传感器。 在该配置下，第一盘表面的较低存储密度用于存储经常访问的数据，而较高存储密度第二磁盘表面用于存储容量补充，使得可以增加直接存取存储设备的总数据存储容量 而不会降低数据访问性能。