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1. 发明授权

US5615064A Pulsed current velocity controlled head load method and apparatus which uses the back EMF to control the generation of head actuator driving pulses 失效
标题翻译：脉冲电流速度控制头负载方法和装置，其使用反电动势来控制头致动器驱动脉冲的产生
公开(公告)号：US5615064A
公开(公告)日：1997-03-25
申请号：US317979
申请日：1994-10-03
申请人： Timothy J. Blank , Kevin J. Erickson , Richard Greenberg , John C. Purkett
发明人： Timothy J. Blank , Kevin J. Erickson , Richard Greenberg , John C. Purkett
IPC分类号： G11B21/12 , G11B21/02
CPC分类号： G11B21/12
摘要： A digital storage system is disclosed in which a flying read/write head is loaded onto the surface of moving storage media with controlled velocity to avoid contact with the surface of the storage media. Head load velocity is detected by measuring the back EMF generated by the head arm actuator. Improved control and accuracy is obtained by breaking up the head arm actuator drive power into a series of pulses and measuring the back EMF induced into the low impedance voice coil of the head arm actuator in between pulses but only after the actuator current has been reduced to substantially zero in order to avoid interference by actuator current induced voltages.
摘要翻译：公开了一种数字存储系统，其中飞行读/写头以受控速度加载到移动存储介质的表面上，以避免与存储介质的表面接触。通过测量头臂执行器产生的反电动势来检测头部负载速度。通过将头臂致动器驱动功率分解为一系列脉冲并且在脉冲之间测量在头臂致动器的低阻抗音圈中感应的反电动势，但仅在致动器电流已经减小到基本为零，以避免致动器电流感应电压的干扰。

2. 发明授权

US5757568A System and method for encoding a servo address 失效
标题翻译：用于编码伺服地址的系统和方法
公开(公告)号：US5757568A
公开(公告)日：1998-05-26
申请号：US678856
申请日：1996-07-12
申请人： Richard Greenberg , John C. Purkett
发明人： Richard Greenberg , John C. Purkett
IPC分类号： G11B21/10 , G11B5/48 , G11B5/55 , G11B5/596 , G11B7/007 , G11B20/12 , G11B21/00 , G11B21/08 , G11B27/10 , G11B27/30 , G11B5/09
CPC分类号： G11B20/1252 , G11B21/00 , G11B27/105 , G11B27/3027 , G11B5/4886 , G11B5/59655 , G11B7/00745 , G11B20/1217 , G11B2020/1234 , G11B2220/20 , G11B5/553
摘要： A servo address is encoded in a disk drive system having at least one disk for storing data. A servo address associated with a sector in a track, or cylinder, on a surface of a disk and comprised of a sector number, a track number, and in multiple disk systems, a head number is encoded into the encoded servo address. Encoding the servo address saves disk storage space because the encoded servo address uses fewer bits than a conventional servo address while still enabling the disk drive system to locate positions on the disk.
摘要翻译：伺服地址被编码在具有至少一个用于存储数据的盘的磁盘驱动器系统中。与盘的表面上的轨道或圆柱体中的扇区相关联的由扇区号，轨道号和多个盘系统组成的伺服地址，头编号到编码的伺服地址中。编码伺服地址可节省磁盘存储空间，因为编码伺服地址比传统伺服地址使用的位数更少，同时仍然允许磁盘驱动器系统定位磁盘上的位置。

3. 发明授权

US6104558A System and method of encoding an index mark into a servo address 失效
标题翻译：将索引标记编码为伺服地址的系统和方法
公开(公告)号：US6104558A
公开(公告)日：2000-08-15
申请号：US44699
申请日：1998-03-20
申请人： Richard Greenberg , John C. Purkett
发明人： Richard Greenberg , John C. Purkett
IPC分类号： G11B5/55 , G11B5/596 , G11B27/10 , G11B27/30 , G11B5/09
CPC分类号： G11B27/3027 , G11B27/105 , G11B5/553 , G11B5/59655
摘要： A system and method for encoding a servo address in a disk drive system having at least one disk for storing data is disclosed. A servo address associated with a sector in a track, or cylinder, on a surface of a disk and comprised of a sector number, a track number, and in multiple disk systems, a head number is encoded into the encoded servo address. Encoding the servo address saves disk storage space because the encoded servo address uses fewer bits than a conventional servo address while still enabling the disk drive system to verify the location of any sector.
摘要翻译：公开了一种用于对具有至少一个用于存储数据的盘的磁盘驱动器系统中的伺服地址进行编码的系统和方法。与盘的表面上的轨道或圆柱体中的扇区相关联的由扇区号，轨道号和多个盘系统组成的伺服地址，头编号到编码的伺服地址中。编码伺服地址可以节省磁盘存储空间，因为编码的伺服地址比传统的伺服地址使用的位数更少，同时仍然允许磁盘驱动器系统验证任何扇区的位置。

4. 发明授权

US5596460A System and method for encoding a servo address 失效
标题翻译：用于编码伺服地址的系统和方法
公开(公告)号：US5596460A
公开(公告)日：1997-01-21
申请号：US364561
申请日：1994-12-27
申请人： Richard Greenberg , John C. Purkett
发明人： Richard Greenberg , John C. Purkett
IPC分类号： G11B21/10 , G11B5/48 , G11B5/55 , G11B5/596 , G11B7/007 , G11B20/12 , G11B21/00 , G11B21/08 , G11B27/10 , G11B27/30 , G11B5/09
CPC分类号： G11B20/1252 , G11B21/00 , G11B27/105 , G11B27/3027 , G11B5/4886 , G11B5/59655 , G11B7/00745 , G11B20/1217 , G11B2020/1234 , G11B2220/20 , G11B5/553
摘要： A servo address is encoded in a disk drive system having at least one disk for storing data. A servo address associated with a sector in a track, or cylinder, on a surface of a disk and comprised of a sector number, a track number, and in multiple disk systems, a head number is encoded into the encoded servo address. Encoding the servo address saves disk storage space because the encoded servo address uses fewer bits than a conventional servo address while still enabling the disk drive system to locate positions on the disk.
摘要翻译：伺服地址被编码在具有至少一个用于存储数据的盘的磁盘驱动器系统中。与盘的表面上的轨道或圆柱体中的扇区相关联的由扇区号，轨道号和多个盘系统组成的伺服地址，头编号到编码的伺服地址中。编码伺服地址可节省磁盘存储空间，因为编码伺服地址比传统伺服地址使用的位数更少，同时仍然允许磁盘驱动器系统定位磁盘上的位置。

5. 发明授权

US6016234A Actuator retract/unload system for low power disk drives 失效
标题翻译：用于低功率磁盘驱动器的执行器缩回/卸载系统
公开(公告)号：US6016234A
公开(公告)日：2000-01-18
申请号：US900961
申请日：1997-07-25
申请人： Timothy J. Blank , Zine-Eddine Boutaghou , Kevin Jack Erickson , Richard Greenberg
发明人： Timothy J. Blank , Zine-Eddine Boutaghou , Kevin Jack Erickson , Richard Greenberg
IPC分类号： G11B21/12 , G11B5/54 , G11B19/20
CPC分类号： G11B5/54 , G11B19/20 , G11B21/12
摘要： A capacitor discharge retract system is provided for small disk drives wherein the small spindle size is incapable of generating enough electrical energy to enable conventional actuator retraction and the form factor is too small to accommodate capacitors of sufficient size to enable a conventional capacitive discharge system. A capacitive discharge retract technique is enabled using an elevated voltage, significantly above the disk drive supply voltage, to allow smaller capacitive storage elements to perform the function. The effectiveness of the system is further enhanced in those environments where a source of the required elevated voltage can be found already resident in the device circuitry where it was generated to support another function.
摘要翻译：为小型磁盘驱动器提供电容器放电回缩系统，其中小的主轴尺寸不能产生足够的电能以使得常规的致动器回缩并且形状因子太小而不能容纳足够尺寸的电容器以实现传统的电容放电系统。使用显着高于磁盘驱动器电源电压的升高的电压来启用电容放电回缩技术，以允许更小的电容存储元件执行功能。在可以发现所需升高电压的源已经存在于其被产生以支持另一功能的设备电路中的环境中，系统的有效性得到进一步提高。

6. 发明授权

US5289097A Spindle control method and apparatus for disk drive 失效
标题翻译：磁盘驱动器的主轴控制方法和装置
公开(公告)号：US5289097A
公开(公告)日：1994-02-22
申请号：US931807
申请日：1992-08-18
申请人： Kevin J. Erickson , Richard Greenberg , Douglas W. Nelson
发明人： Kevin J. Erickson , Richard Greenberg , Douglas W. Nelson
IPC分类号： G11B19/00 , G11B19/02 , G11B19/20 , G11B19/28 , G05B13/00
CPC分类号： G11B19/02 , G11B19/00 , G11B19/20
摘要： A spindle motor control method and apparatus for spindle motor control are provided for use in a direct access storage device. A plurality of operational modes of the direct access storage device are detected. The operational modes of the direct access storage device include start-up and idle operational modes and predetermined critical operational modes that include reading of data and reading of servo information. A pulse width modulation (PWM) mode control for applying driving current to the spindle motor is provided responsive to detecting a start-up or an idle operational mode. A linear mode control for applying driving current to the spindle motor is provided responsive to detecting one of the predetermined critical operational modes. During operation of the disk file, a small percentage of the overall file power-on time is spent performing critical file operations so that substantial power savings are achieved by the PWM mode control. Also since the integrity of the data transferred is critical, the error rate reduction that results by operating in the linear mode during the critical file operations is advantageous.
摘要翻译：主轴电动机控制方法和主轴电机控制装置被提供用于直接存取存储装置。检测直接存取存储装置的多种操作模式。直接存取存储设备的操作模式包括启动和空闲操作模式以及预定的关键操作模式，包括读取数据和读取伺服信息。响应于检测启动或空闲操作模式，提供用于向主轴电动机施加驱动电流的脉宽调制（PWM）模式控制。响应于检测到预定的关键操作模式之一，提供用于向主轴电动机施加驱动电流的线性模式控制。在磁盘文件的操作期间，整个文件开机时间的一小部分用于执行关键的文件操作，以便通过PWM模式控制实现大量的功耗。此外，由于传输的数据的完整性是关键的，所以在关键文件操作期间通过在线性模式下操作而导致的错误率降低是有利的。

7. 发明授权

US5392290A System and method for preventing direct access data storage system data loss from mechanical shock during write operation 失效
标题翻译：用于防止在写入操作期间直接访问数据存储系统数据丢失的机械冲击的系统和方法
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。

8. 发明授权

US5343340A Digital servo signal demodulation method and apparatus utilizing a partial-response maximum-likelihood (PRML) channel in a disk file 失效
标题翻译：利用磁盘文件中的部分响应最大似然（PRML）信道的数字伺服信号解调方法和装置
公开(公告)号：US5343340A
公开(公告)日：1994-08-30
申请号：US999309
申请日：1992-12-31
申请人： Zine-Eddine Boutaghou , Dana H. Brown , Kevin J. Erickson , Richard Greenberg
发明人： Zine-Eddine Boutaghou , Dana H. Brown , Kevin J. Erickson , Richard Greenberg
IPC分类号： G11B21/10 , G11B5/596 , G11B20/10 , G11B21/08
CPC分类号： G11B5/59622 , G11B20/10009 , G11B21/083
摘要： Apparatus and method are provided for servo signal demodulation using a servo processor and a partial-response maximum-likelihood (PRML) data channel in a disk file. A servo burst timing window is identified. Then a plurality of digital samples are detected with the PRML data channel responsive to identifying the servo burst timing window. Sequential sets of the detected digital samples are accumulated by the PRML data channel and transmitted to the servo processor. The digital samples are processed by the servo processor for providing servo phase information that is used to provide servo position information.
摘要翻译：提供了使用伺服处理器和磁盘文件中的部分响应最大似然（PRML）数据信道进行伺服信号解调的装置和方法。识别伺服突发定时窗口。然后响应于识别伺服突发定时窗口，用PRML数据信道检测多个数字样本。检测到的数字样本的顺序集由PRML数据信道累加并传送到伺服处理器。数字样本由伺服处理器处理，用于提供用于提供伺服位置信息的伺服相位信息。

9. 发明授权

US06438703B1 Method and system for selectively varying signal delay in response to detection of a quiescent signal 失效
标题翻译：响应于静态信号的检测选择性地改变信号延迟的方法和系统
公开(公告)号：US06438703B1
公开(公告)日：2002-08-20
申请号：US09307982
申请日：1999-05-10
申请人： Lynn Charles Berning , Richard Greenberg
发明人： Lynn Charles Berning , Richard Greenberg
IPC分类号： G06F104
CPC分类号： G06F5/06
摘要： An electrical signal is communicated between a first device and a second device during a plurality of active clock periods, where the electrical signal is in one of multiple possible states during each of the active clock periods. Timing circuitry within one of the first and second devices detects a predetermined sequence of states in the electrical signal, and in response to detecting the predetermined sequence, adjusts the timing of a subsequent state of the electrical signal with respect to an associated active clock period. Adjustment of signal timing in this manner is useful in reducing signal error due to the line charging effect.
摘要翻译：在多个活动时钟周期期间，在第一设备和第二设备之间传送电信号，其中电信号在每个活动时钟周期期间处于多个可能状态之一。在第一和第二设备之一内的定时电路检测电信号中的预定状态序列，并且响应于检测到预定序列，调整相对于相关联的活动时钟周期的电信号的后续状态的定时。以这种方式调整信号定时对于减少由于线路充电效应引起的信号误差是有用的。

10. 发明授权

US06079044A Method and error correcting code (ECC) apparatus for storing predefined information with ECC in a direct access storage device 失效
标题翻译：用于在直接访问存储设备中用ECC存储预定信息的方法和纠错码（ECC）装置
公开(公告)号：US06079044A
公开(公告)日：2000-06-20
申请号：US892244
申请日：1997-07-14
申请人： Earl Albert Cunningham , Richard Greenberg , Michael J. Shea
发明人： Earl Albert Cunningham , Richard Greenberg , Michael J. Shea
IPC分类号： G11B20/10 , G06F11/10 , G11B20/18 , H03M13/00 , G11C29/00
CPC分类号： G06F11/1008 , H03M13/00
摘要： Apparatus and methods for storing predefined information with error correcting code (ECC) in a direct access storage device are provided. Predetermined information is identified and loaded to an ECC generator for customer data to be read and written. The identified predetermined information includes an address for customer data to be read and written. The customer data is written and loaded in parallel to the ECC generator. Then the generated ECC that reflects the pre-loaded predetermined information is written at the end of the written customer data. The customer data and ECC is read and loaded in parallel to the ECC generator. Errors in the predetermined information that is not written to the disk surface, can be detected from the read ECC.
摘要翻译：提供了用于在直接访问存储设备中存储具有纠错码（ECC）的预定义信息的装置和方法。识别预定信息并将其加载到ECC发生器中，以便客户数据被读取和写入。所识别的预定信息包括要读取和写入的客户数据的地址。客户数据并行编写并加载到ECC发生器。然后，在写入的客户数据的最后写入反映预加载的预定信息的生成的ECC。客户数据和ECC与ECC发生器并行读取和加载。可以从读取的ECC检测到未写入盘表面的预定信息中的错误。

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