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1. 发明授权

US5455723A Method and apparatus for ramp load and unload 失效
标题翻译：斜坡加载和卸载的方法和装置
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。

2. 发明授权

US5633767A Adaptive and in-situ load/unload damage estimation and compensation 失效
标题翻译：自适应和原位装载/卸载损伤估计和补偿
公开(公告)号：US5633767A
公开(公告)日：1997-05-27
申请号：US469253
申请日：1995-06-06
申请人： Zine-Eddine Boutaghou , Hal H. Ottesen , Gordon J. Smith
发明人： Zine-Eddine Boutaghou , Hal H. Ottesen , Gordon J. Smith
IPC分类号： G11B19/04 , G06F11/00 , G11B5/09 , G11B5/54 , G11B20/18 , G11B21/02 , G11B21/12 , G11B21/22
CPC分类号： G11B5/54 , G11B19/04 , G11B20/1816 , G11B20/1879 , G11B21/12 , G11B21/22
摘要： The present invention overcomes the problems that accompany the use of ramps to load and unload transducer carrying sliders in rigid magnetic disk data storage devices. The tracks in the region where the slider loads and unloads are read and the errors recorded following each slider loading operation. One technique is to track the error increase and identify imminent device failure when the rate of error increase during a given number of the most recent slider load cycles exceeds a threshold value. In another mode, a dedicated sequence of tracks is recorded at an increased linear density to assure that read errors occur to enable a more effective comparative evaluation. This makes possible a two stage evaluation, a first threshold number of errors indicative of degrading performance which initiates lower actuator velocity to inhibit further degradation and a second threshold error quantity that indicates imminent catastrophic failure and triggers a warning to the system user. To make the analysis more meaningful, certain errors may be ignored, such as simpler errors or the full number of errors in a cluster that may be the result of a single event.
摘要翻译：本发明克服了使用斜坡在刚性磁盘数据存储装置中装载和卸载传感器携带滑块的问题。读取滑块加载和卸载的区域中的轨迹，并在每个滑块加载操作之后记录错误。一种技术是在给定数量的最近的滑块加载循环中的错误增加率超过阈值时跟踪错误增加并识别即将发生的设备故障。在另一种模式中，以增加的线性密度记录专用的磁道序列，以确保发生读取错误以实现更有效的比较评估。这使得可以进行两阶段评估，指示降级性能的第一阈值数量的错误，其启动较低的致动器速度以抑制进一步劣化，以及指示即将发生的灾难性故障并触发对系统用户的警告的第二阈值误差量。为了使分析更有意义，可能会忽略某些错误，例如可能是单个事件的结果的更简单的错误或集群中的完整数量的错误。

3. 发明授权

US5574604A Inner diameter disk drive head/slider load/unload device 失效
标题翻译：内径盘驱动头/滑块装载/卸载装置
公开(公告)号：US5574604A
公开(公告)日：1996-11-12
申请号：US416938
申请日：1995-04-04
申请人： Lowell J. Berg , Zine-Eddine Boutaghou , Thomas S. Larson , Dallas W. Meyer , Jay M. Mosbrucker , Jerry L. Neubauer , Hal H. Ottesen
发明人： Lowell J. Berg , Zine-Eddine Boutaghou , Thomas S. Larson , Dallas W. Meyer , Jay M. Mosbrucker , Jerry L. Neubauer , Hal H. Ottesen
IPC分类号： G11B5/54 , G11B21/12 , G11B21/22
CPC分类号： G11B5/54
摘要： A load/unload device to remove the slider from the proximity of the magnetic recording surface of a disk in a disk drive whenever the disk is to be stopped. The load/unload device is a ramp-like wedge which extends generally radially from the center of the magnetic disk and to the magnetic recording surface of the magnetic disk. When the slider is moved toward the center of the disk by an actuator mechanism, the end of the load arm supporting the slider, referred to as a tang, will engage the inclined plane of the wedge and lift the slider from the surface of the magnetic disk as the slider is translated closer to the center of the disk. Once the slider has been removed from close proximity of the disk, the tang may engage a trough-like surface on the structure supporting the wedge and will effectively detent the position of the slider through the forces exerted on the tang by the load beam of the actuator. Thus the disk will be protected from undesirable and damaging impacts of the slider against the magnetic recording surface of the disk thereby prolonging disk utility.
摘要翻译：每当磁盘停止时，装载/卸载装置从磁盘驱动器中磁盘的磁记录表面的附近移除滑块。装载/卸载装置是从磁盘的中心大致径向延伸到磁盘的磁记录表面的斜坡形楔形物。当滑块通过致动器机构朝向盘的中心移动时，支撑滑块的负载臂的端部（被称为柄脚）将接合楔形物的倾斜平面并且从磁体的表面提起滑块磁盘作为滑块更靠近磁盘的中心。一旦滑块从盘的紧密附近被移除，则柄脚可以接合支撑楔的结构上的槽形表面，并且将有效地通过施加在柄脚上的作用力来使滑块的位置通过执行器。因此，该盘将被保护免受滑块抵靠磁盘的磁记录表面的不利影响，从而延长磁盘的使用效率。

4. 发明授权

US5521778A Disk drive with primary and secondary actuator drives 失效
标题翻译：磁盘驱动器带有主和辅助驱动器
公开(公告)号：US5521778A
公开(公告)日：1996-05-28
申请号：US298509
申请日：1994-08-30
申请人： Zine-Eddine Boutaghou , Hal H. Ottesen
发明人： Zine-Eddine Boutaghou , Hal H. Ottesen
IPC分类号： G11B5/55 , G11B5/56
CPC分类号： G11B5/5521 , G11B5/4873 , G11B5/5552
摘要： A secondary actuator for increased positional resolution of a read/write head for a DASD is disposed on the distal end of an actuator arm and acts to pivotally move the load beam about the attachment axis. The actuator is comprised of a ring structure on the end of the load beam with the ring structure attached to a central hub through a plurality of spokes. The central hub is fixedly attached to the distal end of the actuator arm for the DASD. Relative motion between the actuator arm and the load beam is accomplished by causing a deflection in one or more of the spokes. The deflection may be caused by piezo-electric transducer elements which are attached to the sides of at least two spokes. Signals sent to the piezo-electric transducer elements will cause bending of the piezoelectric transducer elements and the attached spoke and thus rotationally displace the junction of the spoke and the ring about the central hub. This arrangement permits increasing the fine resolution of the recording tracts on a DASD disk by accommodating the stiction forces which limit the resolution of the actuator and eliminating stiction forces as a factor for the secondary actuator.
摘要翻译：用于增加用于DASD的读/写头的位置分辨率的辅助致动器设置在致动器臂的远端上并且用于围绕附接轴线枢转地移动负载梁。致动器由负载梁端部的环形结构构成，环形结构通过多个轮辐连接到中心毂。中心毂固定在DASD的执行机构的末端。致动器臂和负载梁之间的相对运动是通过在一个或多个轮辐中引起偏转来实现的。偏转可能由附接到至少两个轮辐的侧面的压电换能器元件引起。发送到压电换能器元件的信号将导致压电换能器元件和附接的辐条的弯曲，并因此旋转地使辐条和环绕中心毂的接合位移。这种布置允许通过适应限制致动器的分辨率的静止力并消除作为次级致动器的因素的静摩擦力来增加DASD盘上的记录道的精细分辨率。

5. 发明授权

US5619387A Disk storage device with spiral data track and incremental error offsets in angularly spaced imbedded concentric servo patterns 失效
标题翻译：具有螺旋数据轨迹的磁盘存储设备和以角度间隔嵌入的同心伺服模式的增量误差偏移
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。

6. 发明授权

US5422761A Disk drive with redundant recording 失效
标题翻译：带有冗余录音的磁盘驱动器
公开(公告)号：US5422761A
公开(公告)日：1995-06-06
申请号：US979110
申请日：1992-11-20
申请人： Nathaniel C. Anderson , Mohammed A. Hajji , Hal H. Ottesen , Michael J. Ross
发明人： Nathaniel C. Anderson , Mohammed A. Hajji , Hal H. Ottesen , Michael J. Ross
IPC分类号： G11B20/12 , G11B20/18 , H03M13/35 , G11B5/09
CPC分类号： G11B20/1803 , H03M13/35
摘要： A magnetic disk drive includes redundant data written at a plurality of out of phase angular locations to reduce the latency and enhance performance during a read operation. The loss of recording capacity is reduced by increasing the data density to achieve the same soft error rate standard required for single recording. Dual recording also allows different recording codes to be used at the duplicated locations to thereby have the more highly stressed code words occur at different locations in the data to further reduce the possibility of an error. The redundant recording can be used in one portion of the media and normal recording used in another media portion to enable selection of the recording technique in accordance with the type of data being stored. The size of the normal and redundant recording portions can be controlled by the format operation and the user of the disk drive can intervene to designate the size of the redundant and normal media recording portions effected during the format operation.
摘要翻译：磁盘驱动器包括写入多个异相角位置的冗余数据，以减少在读取操作期间的延迟并增强性能。通过增加数据密度来实现单记录所需的相同的软错误率标准，可以减少记录容量的损失。双重记录还允许在复制位置使用不同的记录代码，从而在数据中的不同位置处产生更高压力的代码字，以进一步降低错误的可能性。冗余记录可以用于媒体的一部分和在另一媒体部分中使用的正常记录，以使得能够根据所存储的数据类型选择记录技术。可以通过格式化操作来控制正常和冗余的记录部分的大小，并且磁盘驱动器的用户可以介入以指定在格式化操作期间实现的冗余和通常的媒体记录部分的大小。

7. 发明授权

US5377131A Digital amplitude estimator 失效
标题翻译：数字振幅估计器
公开(公告)号：US5377131A
公开(公告)日：1994-12-27
申请号：US999047
申请日：1992-12-31
申请人： Hal H. Ottesen , Gordon J. Smith
发明人： Hal H. Ottesen , Gordon J. Smith
IPC分类号： G01R19/25 , G06F17/00 , G06F17/18 , G06F15/31
CPC分类号： G06F17/18 , G01R19/25 , G01R19/2506
摘要： Amplitude information is derived from a periodic waveform by digitally sampling the periodic waveform, filtering a digital harmonic signal out of the digital sample sequence of the periodic waveform, and computing the root mean square of the digital Mth harmonic signal over a predetermined number of successive samplings of the periodic waveform. The digital sampling is done at a rate such that there will be an integer number of samples "L" over the period of the first harmonic component of the digital sample sequence of the waveform signal. The root mean square value computation is simplified by selecting the sampling window width N and the harmonic M so that there is a predetermined relationship to a critical sampling number L given by the expression, L=(4MN)/(2j+1) where j=0, 1, 2, . . . . As long as this relationship is satisfied, the RMS value can be computed by summing the absolute value of selected digital amplitude values of the selected harmonic component of the digitized signal. Further, the RMS values may be averaged by nesting a number of successive indexed RMS value computations.
摘要翻译：通过对周期性波形进行数字采样，从周期波形的数字采样序列中滤出数字谐波信号，并在预定数量的连续取样中计算数字M次谐波信号的均方根，从周期波形中得到振幅信息的周期性波形。数字采样以使得在波形信号的数字采样序列的一次谐波分量的周期内将存在整数个采样“L”的速率进行。通过选择采样窗口宽度N和谐波M来简化均方根值计算，使得与表达式L =（4MN）/（2j + 1）给出的关键采样数L有预定关系，其中j = 0，1，2，... 。。。只要满足该关系，可以通过将数字化信号的所选择的谐波分量的所选数字振幅值的绝对值求和来计算RMS值。此外，可以通过嵌套多个连续索引的RMS值计算来平均RMS值。

8. 发明授权

US5630104A Apparatus and method for providing multimedia data 失效
标题翻译：用于提供多媒体数据的装置和方法
公开(公告)号：US5630104A
公开(公告)日：1997-05-13
申请号：US444116
申请日：1995-05-18
申请人： Hal H. Ottesen , Gordon J. Smith , George W. Van Leeuwen
发明人： Hal H. Ottesen , Gordon J. Smith , George W. Van Leeuwen
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 , G06F17/00 , G06F9/455
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。

9. 发明授权

US5625508A Method and apparatus for servo demodulation in a direct access storage device 失效
标题翻译：一种直接存取存储装置伺服解调方法及装置
公开(公告)号：US5625508A
公开(公告)日：1997-04-29
申请号：US491103
申请日：1995-06-16
申请人： Dana H. Brown , Hal H. Ottesen , Gordon J. Smith
发明人： Dana H. Brown , Hal H. Ottesen , Gordon J. Smith
IPC分类号： G11B5/596
CPC分类号： G11B5/59611 , G11B5/59616
摘要： A method and apparatus are provided for servo demodulation in a direct access storage device. A readback signal is sensed from at least one disk surface and locations of positive and negative peaks in the sensed readback signal are detected for providing a detected peak signal. A square wave signal having a period variable with distance between detected locations of positive and negative peaks is generated using the detected peak signal and applied to a servo demodulator in the direct access storage device.
摘要翻译：提供了一种在直接存取存储装置中用于伺服解调的方法和装置。从至少一个盘表面感测回读信号，并检测感测的回读信号中的正峰值和负峰值的位置以提供检测到的峰值信号。使用所检测的峰值信号产生具有正值和负峰值的检测位置之间的距离的周期变化的方波信号，并将其应用于直接存取存储装置中的伺服解调器。

10. 发明授权

US5594924A Multiple user multimedia data server with switch to load time interval interleaved data to plurality of time interval assigned buffers 失效
标题翻译：多用户多媒体数据服务器，具有切换以将时间间隔交织的数据加载到多个时间间隔分配的缓冲器
公开(公告)号：US5594924A
公开(公告)日：1997-01-14
申请号：US443838
申请日：1995-05-18
申请人： Hal H. Ottesen , Gordon J. Smith , George W. Van Leeuwen
发明人： Hal H. Ottesen , Gordon J. Smith , George W. Van Leeuwen
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 , G06F9/312
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。

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