公开(公告)号：US5619387A

公开(公告)日：1997-04-08

申请号：US689582

申请日：1996-08-12

申请人： Hal H. Ottesen ,  Earl A. Cunningham ,  Richard Greenberg ,  Dana H. Brown

发明人： Hal H. Ottesen ,  Earl A. Cunningham ,  Richard Greenberg ,  Dana H. Brown

IPC分类号： G11B5/012 ,  G11B5/55 ,  G11B5/596 ,  G11B7/0037 ,  G11B19/20 ,  G11B19/247 ,  G11B20/12 ,  G11B21/00 ,  G11B21/02 ,  G11B21/04 ,  G11B27/00 ,  G11B27/10 ,  H04N7/173

CPC分类号： G11B5/5965 ,  G11B19/20 ,  G11B19/2009 ,  G11B19/247 ,  G11B20/12 ,  G11B20/1258 ,  G11B21/00 ,  G11B21/02 ,  G11B21/04 ,  G11B27/002 ,  G11B27/105 ,  G11B5/012 ,  G11B5/5521 ,  G11B5/5526 ,  H04N7/17336 ,  G11B2020/10916 ,  G11B2220/20 ,  G11B2220/41 ,  G11B2220/415 ,  G11B7/0037

摘要： A disk drive stores multimedia data in long spiral data tracks. The tracks on opposite surfaces of the disk spiral in opposite directions, so that a track on one surface can be read as the actuator sweeps in, and a track on the opposite surface can be read as the actuator sweeps out. Because the actuator only follows spiral tracks without performing long seek operations, the actuator motor can be reduced in size and stresses on actuator bearings and other parts are reduced. Additionally, due to reduced disturbances associated with seeks, it is possible to follow tracks more closely and therefore reduce the width of individual tracks. Further cost reductions are accomplished by spinning the disks at a slower speed and reducing the size of the spin motor accordingly. Finally, data density can be increased simply because multimedia data does not require the same low error rate as conventional data. Preferably, a group of disk drives optimized for multimedia data is used to form a video-on-demand system. Compressed, interleaved portions of a video presentation, such as a motion picture, are stored in blocks on the spiral tracks. The drives read the blocks on one spiral track at a time from beginning to end, placing the data from these blocks in a set of buffers corresponding to different short time intervals. Video signals are output from the buffers. Any short time interval of the presentation can be accessed on demand by switching to the appropriate buffer.

摘要翻译： 磁盘驱动器将多媒体数据存储在长螺旋数据轨道中。 盘的相对表面上的轨迹以相反的方向螺旋，使得当致动器扫过时可以读取一个表面上的轨道，并且当致动器扫过时可以读取相对表面上的轨道。 由于执行器只能沿着螺旋轨道进行，而不需要执行长时间的寻道操作，所以致动器马达的尺寸和致动器轴承的应力减小，其他部件也减少。 另外，由于与寻找相关联的干扰减少，可以更紧密地跟踪轨道，并因此减小各个轨道的宽度。 通过以较慢的速度旋转盘并相应地减小旋转马达的尺寸来实现进一步的成本降低。 最后，数据密度可以简单地增加，因为多媒体数据不需要与传统数据相同的低错误率。 优选地，使用针对多媒体数据优化的一组磁盘驱动器来形成视频点播系统。 诸如运动图像的视频呈现的压缩的交错部分被存储在螺旋轨道上的块中。 驱动器从开始到结束一次读取一个螺旋轨道上的块，将来自这些块的数据放置在对应于不同短时间间隔的一组缓冲器中。 视频信号从缓冲器输出。 通过切换到适当的缓冲区，可以根据需要访问演示的任何短时间间隔。

公开(公告)号：US5463758A

公开(公告)日：1995-10-31

申请号：US101138

申请日：1993-08-02

申请人： Hal H. Ottesen

发明人： Hal H. Ottesen

IPC分类号： G06F3/06 ,  G11B20/18 ,  G11B27/00 ,  G11B27/10 ,  G11C29/00 ,  G06F11/16 ,  G06F13/00

CPC分类号： G11C29/74 ,  G06F3/0601 ,  G11B20/1803 ,  G11B27/002 ,  G11B27/105 ,  G06F2003/0697 ,  G11B2020/10916 ,  G11B2220/415

摘要： Disclosed is a mass storage system for a data processing system providing data redundancy by mirroring files and arranging redundant record copies in a way to reduce access time and energy consumption over a pure mirrored system. A plurality of mirrored disk drives for long term storage of duplicate copies of the records are utilized. The logical address for each record is equated to relatively displaced radial locations among the mirrored disk drives. A controller for the mirrored disk drives maintains a record of correspondence between track physical addresses and logical addresses, and the current location for the transducer positioning arm for each disk drive. Upon a read access to a record, the arm closest, in terms of track displacement, from the track where a record copy is kept is used to access the record copy. Application of the method to zone bit recording system is also discussed.

摘要翻译： 公开了一种用于数据处理系统的海量存储系统，其通过镜像文件和排列冗余记录副本来提供数据冗余，以减少纯镜像系统的访问时间和能量消耗。 利用多个用于长期存储记录的副本的镜像磁盘驱动器。 每个记录的逻辑地址等于镜像磁盘驱动器中相对位移的径向位置。 用于镜像磁盘驱动器的控制器保持轨道物理地址和逻辑地址之间的对应记录，以及用于每个磁盘驱动器的换能器定位臂的当前位置。 在对记录进行读取访问时，使用最靠近轨道位移的手臂与保存记录副本的轨道进行访问。 还讨论了该方法对区位记录系统的应用。

公开(公告)号：US5455723A

公开(公告)日：1995-10-03

申请号：US252667

申请日：1994-06-02

申请人： Zine-Eddine Boutaghou ,  Earl A. Cunningham ,  Hal H. Ottesen

发明人： Zine-Eddine Boutaghou ,  Earl A. Cunningham ,  Hal H. Ottesen

IPC分类号： G11B21/12 ,  G11B5/54 ,  G11B21/02 ,  G11B21/22

CPC分类号： G11B21/12 ,  G11B21/02 ,  G11B21/22 ,  G11B5/54

摘要： Disclosed is a disk drive having at least one disk for storing data. The disk drive includes at least one transducer for reading or writing data to or from the disk. The transducer is attached to an actuator which positions the transducer with respect to the disk. The actuator includes a controllable motor which is used to move the actuator and the transducer attached thereto. The disk drive also includes a ramp for off loading the transducer or for parking the transducer off of the surface of the disk. Also disclosed is apparatus and methods for measuring and controlling the movement of the actuator and attached transducer while the transducer is coming from a position off of the ramp and onto the surface of the disk.

摘要翻译： 公开了一种具有至少一个用于存储数据的盘的磁盘驱动器。 磁盘驱动器包括至少一个读取或写入数据到磁盘的传感器。 传感器连接到将换能器相对于盘定位的致动器。 致动器包括可控马达，其用于移动致动器和连接到其上的换能器。 磁盘驱动器还包括用于卸载换能器或将换能器从盘的表面停放的斜坡。 还公开了一种装置和方法，用于测量和控制致动器和连接的换能器的运动，同时换能器来自斜坡的位置并且到达盘的表面。

公开(公告)号：US5392290A

公开(公告)日：1995-02-21

申请号：US922453

申请日：1992-07-30

申请人： Dana H. Brown ,  Kevin J. Erickson ,  Daniel L. Good ,  Richard Greenberg ,  Peter M. Herman ,  Hal H. Ottesen

发明人： Dana H. Brown ,  Kevin J. Erickson ,  Daniel L. Good ,  Richard Greenberg ,  Peter M. Herman ,  Hal H. Ottesen

IPC分类号： G06F3/06 ,  G06F12/16 ,  G11B19/04 ,  G11B19/12 ,  G11B20/10 ,  G11B20/18 ,  G06F11/08 ,  G06F11/14

CPC分类号： G11B20/1803 ,  G11B19/04 ,  G11B19/12 ,  G11B20/1833 ,  G11B2020/1282 ,  G11B2020/1284

摘要： A secondary data storage system for a host computer system includes a disk drive system having a device controller, at least a first magnetic disk and a read/write magnetic transducer positionable with respect to a recording surface of each magnetic disk. A write operation exposes data on adjacent tracks to potential damage if an off track condition occurs to the transducer during a write. A method for controlling write operations through the device controller provides backup of data in tracks adjacent to a target track for the write operation prior to the write operation occurring. The method detects occurrence of events resulting in an off track condition of the magnetic transducer relative to a target track. Occurrence of such an event triggers a determination of damage to the contents of tracks adjacent to the target track and restoration of those tracks. Write operations to the target track are blocked until shock events discontinue.

摘要翻译： 用于主计算机系统的辅助数据存储系统包括具有设备控制器，至少第一磁盘和可相对于每个磁盘的记录表面定位的读/写磁换能器的磁盘驱动器系统。 如果在写入期间传感器发生偏离轨迹条件，则写入操作将相邻轨道上的数据暴露于潜在的损坏。 用于通过设备控制器控制写入操作的方法在写入操作发生之前提供与用于写入操作的目标轨道相邻的轨道中的数据的备份。 该方法检测导致磁换能器相对于目标轨道偏离轨迹的事件的发生。 这种事件的发生触发确定与目标轨道相邻的轨道的内容的损坏以及这些轨道的恢复。 对目标轨道的写入操作将被阻止，直到冲击事件停止为止。

公开(公告)号：US5367409A

公开(公告)日：1994-11-22

申请号：US54719

申请日：1993-04-29

申请人： Hal H. Ottesen ,  Gordon J. Smith

发明人： Hal H. Ottesen ,  Gordon J. Smith

IPC分类号： G11B5/00 ,  G11B5/012 ,  G11B5/09 ,  G11B20/10

CPC分类号： G11B5/09 ,  G11B20/10009 ,  G11B5/012 ,  G11B2005/0016

摘要： Apparatus and method of even harmonic distortion compensation are provided for digital data detection in a disk file. The disk file includes a magneto-resistive (MR) head or other magnetic transducer head and an analog-to-digital converter (ADC) for providing a sampled readback signal. An even harmonic filter is coupled to the ADC for providing a filtered readback signal having only even harmonic components. An adder subtracts the filtered readback signal from the sampled readback signal for providing a compensated output signal. The compensated output signal is applied to a digital channel of the disk file.

摘要翻译： 提供均匀谐波失真补偿的装置和方法，用于磁盘文件中的数字数据检测。 磁盘文件包括用于提供采样回读信号的磁阻（MR）磁头或其它磁性换能器头和模数转换器（ADC）。 偶数谐波滤波器耦合到ADC，以提供仅具有均匀谐波分量的滤波回读信号。 加法器从采样的回读信号中减去经滤波的回读信号，以提供经补偿的输出信号。 补偿的输出信号被施加到磁盘文件的数字通道。