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41. 发明授权

US06873483B2 Disk drive with servo synchronous recording 失效
标题翻译：带伺服同步记录的磁盘驱动器
公开(公告)号：US06873483B2
公开(公告)日：2005-03-29
申请号：US10072406
申请日：2002-02-07
申请人： Steven R. Hetzler , William John Kabelac
发明人： Steven R. Hetzler , William John Kabelac
IPC分类号： G11B5/09 , G11B20/14 , G11B27/30
CPC分类号： G11B20/1403 , G11B5/09 , G11B27/3027 , G11B2220/20
摘要： A read clock circuit for a disk drive includes a phase-locked loop/voltage controlled oscillator (VFO/PLL) and a frequency synthesizer. The VFO/PLL receives a servo sector transition signal that is related to detected transitions in a servo sector field of a magnetic recording disk, and outputs a servo frequency signal that is synchronous to the servo sector transition signal. The frequency synthesizer receives the servo frequency signal and generates the read clock signal that is synchronous with the servo frequency signal. In a banded recording disk drive the frequency synthesizer generates a unique read clock signal for each data band.
摘要翻译：用于磁盘驱动器的读时钟电路包括锁相环/压控振荡器（VFO / PLL）和频率合成器。 VFO / PLL接收与磁记录盘的伺服扇区中检测到的转变相关的伺服扇区转换信号，并输出与伺服扇区转换信号同步的伺服频率信号。频率合成器接收伺服频率信号并产生与伺服频率信号同步的读时钟信号。在带式记录磁盘驱动器中，频率合成器为每个数据频带生成唯一的读取时钟信号。

42. 发明授权

US06725385B1 Intelligent electronic power controller 有权
标题翻译：智能电子电源控制器
公开(公告)号：US06725385B1
公开(公告)日：2004-04-20
申请号：US09659784
申请日：2000-09-11
申请人： Frank Rui-Feng Chu , Steven R. Hetzler
发明人： Frank Rui-Feng Chu , Steven R. Hetzler
IPC分类号： G06F132
CPC分类号： G06F1/3268 , G06F1/3203 , Y02D10/154
摘要： A device connected to an interface has operational logic and power control logic. The device further has multiple power modes, including a first mode and a second, lower power mode. In the first mode, the operational logic is coupled to the interface, and is able to communicate over the interface. In the second mode, the power control logic is coupled to the interface, and the operational logic is decoupled, and substantially powered down. This provides a low interface power mode. In this mode, the power control logic monitors the interface for command activity. The power control logic returns the device to the first mode when the device must be in the first mode to process or reply to the command. The power control logic thus provides for the restoration of function from a low interface power mode without the need for a special “wake-up” command, thereby making the low interface power mode transparent to the host.
摘要翻译：连接到接口的设备具有操作逻辑和功率控制逻辑。该装置还具有多种功率模式，包括第一模式和第二低功率模式。在第一模式中，操作逻辑耦合到接口，并且能够通过接口进行通信。在第二模式中，功率控制逻辑耦合到接口，并且操作逻辑被解耦并且基本上断电。这提供了低接口电源模式。在此模式下，电源控制逻辑监视接口以进行命令活动。当设备必须处于第一模式以处理或回复命令时，电源控制逻辑将设备返回到第一模式。因此，功率控制逻辑提供了从低接口功率模式恢复功能，而不需要特殊的“唤醒”命令，从而使低接口功率模式对主机是透明的。

43. 发明授权

US6137644A Method for adaptive formatting and track traversal in data storage devices 失效
标题翻译：数据存储设备中自适应格式化和跟踪遍历的方法
公开(公告)号：US6137644A
公开(公告)日：2000-10-24
申请号：US081735
申请日：1998-05-19
申请人： Steven R. Hetzler , Prakash Kasiraj , Richard M. H. New
发明人： Steven R. Hetzler , Prakash Kasiraj , Richard M. H. New
IPC分类号： G11B5/012 , G11B5/55 , G11B20/12 , G11B5/09
CPC分类号： G11B20/1258 , G11B20/18 , G11B2020/10916 , G11B2020/1238 , G11B2220/2516 , G11B5/012 , G11B5/5547
摘要： A method for adaptively formatting the multiple surfaces of data storage devices such as hard drives. The method ensures that all the drives have the same total data capacity and that the capacity in each data rate is the same from drive to drive. The method includes the step of dividing the data surfaces into warm and cold surfaces using a surface quality measurement. All cold surfaces are formatted with a predetermined cold format and all warm surfaces are formatted with a predetermined warm format. The cold and warm formats have different data capacities by means of different zone layouts, a different number of error correction code bytes per data block, or different track pitches. A second embodiment uses one of three different formats for each surface: cold, nominal, or hot. The cold and hot formats are designed to be mutually compensating in terms of data capacity and each drive has an equal number of cold and hot surfaces. Therefore, each drive has a total data capacity equal to a drive having only nominally formatted surfaces. Preferably, one surface is formatted cold, and one surface is formatted hot, with the rest formatted according to a nominal format. Also disclosed is a method of traversing the tracks of a drive formatted according to the invention. The traversal method uses cylinder access mode or zone access mode traversal for each group of like-formatted surfaces, thus minimizing seek times.
摘要翻译：一种用于自适应地格式化数据存储设备（例如硬盘驱动器）的多个表面的方法。该方法确保所有驱动器具有相同的总数据容量，并且每个数据速率的容量从驱动器到驱动器都相同。该方法包括使用表面质量测量将数据表面分成温和冷表面的步骤。所有冷表面均以预定的冷格式进行格式化，所有暖面都以预定的温格格式进行格式化。冷和暖格式通过不同的区域布局，每个数据块的不同数量的纠错码字节或不同的轨道间距具有不同的数据容量。第二实施例对于每个表面使用三种不同格式之一：冷，标称或热。冷和热格式被设计为在数据容量方面相互补偿，并且每个驱动器具有相同数量的冷热表面。因此，每个驱动器的总数据容量等于仅具有标称格式的表面的驱动器。优选地，一个表面被格式化为冷，并且一个表面被格式化为热，其余表格根据标称格式格式化。还公开了一种遍历根据本发明格式化的驱动器的轨道的方法。遍历方法使用圆柱体访问模式或区域访问模式遍历每组相似格式的表面，从而最小化查找时间。

44. 发明授权

US5285327A Apparatus for controlling reading and writing in a disk drive 失效
标题翻译：用于控制磁盘驱动器中的读写的装置
公开(公告)号：US5285327A
公开(公告)日：1994-02-08
申请号：US58348
申请日：1993-05-05
申请人： Steven R. Hetzler
发明人： Steven R. Hetzler
IPC分类号： G11B20/10 , G11B20/12 , G11B20/14 , G11B21/10 , G11B27/30 , G11B5/09 , G11B5/596 , G11B15/52 , G11B27/22
CPC分类号： G11B20/10 , G11B20/1201 , G11B20/1258 , G11B27/3027 , G11B5/59655 , G11B2020/1087 , G11B2020/10879 , G11B2020/10916 , G11B2020/1257 , G11B2020/1282 , G11B2220/20 , G11B2220/90
摘要： A method and means is described wherein servo sectors written on a disk (or servo sections written on a tape) are equally spaced on a given track and read during seek, settle and track following operations. An algorithm is used to determine the allowable time separation between servo sectors (or sections) on a track and lengths of associated data sections, such as data sectors or variable length records, that may be accommodated on the disk or tape in such manner that each of the servo sectors (or sections) equally spaced on a given track is located within a data field of a data sector or within an identification region or immediately after an address indicating mark (such as address mark or index mark). The rate at which the servo sector (or section) is sampled is constant and independent of the number and lengths of the data sections. As a result of this independent relationship, this technique is suitable for CLD recording, to banded disks using sectored servo as in conventional FBA, and also even to non-sectored architectures, such as count-key-data (CKD), wherein the data is written in records of variable length, and to tape drives formatted in FBA or CKD.
摘要翻译：描述了一种方法和装置，其中写在磁盘上的伺服扇区（或写在磁带上的伺服部分）在给定磁道上等间隔，并在寻道，定位和跟踪跟随操作期间读取。使用算法来确定轨道上的伺服扇区（或部分）和可以容纳在磁盘或磁带上的相关联的数据段（例如数据扇区或可变长度记录）的长度之间的允许时间间隔，使得每个在给定磁道上等距间隔的伺服扇区（或部分）位于数据扇区的数据区域内或位于识别区域内，或位于地址指示标记（例如地址标记或索引标记）之后。伺服扇区（或部分）采样的速率是恒定的，与数据段的数量和长度无关。作为这种独立关系的结果，该技术适用于CLD记录，使用传统FBA中的分区伺服的带状磁盘，甚至适用于诸如计数密钥数据（CKD）的非分段架构，其中数据以可变长度记录，以及以FBA或CKD格式化的磁带驱动器。

45. 发明授权

US5227625A Retro-reflective variable-pitch diffraction grating for use in a rotary actuator disk file 失效
$Retro-reflective variable-pitch diffraction grating for use in a rotary actuator disk file$
标题翻译：用于旋转执行器磁盘文件的反射可变间距衍射光栅
公开(公告)号：US5227625A
公开(公告)日：1993-07-13
申请号：US946511
申请日：1992-09-16
申请人： Steven R. Hetzler
发明人： Steven R. Hetzler
IPC分类号： G01D5/38 , G11B21/08 , G11B21/10
CPC分类号： G01D5/38 , G11B21/08 , G11B21/106
摘要： A rotary actuator data recording disk file is provided with a retro-reflective diffraction grating for use in measuring the angular position of the rotary actuator arm. The diffraction grating has a diffraction pattern whose pitch varies along the length of the diffraction grating. The variation in pitch is arranged such that, as the rotary actuator arm swings about its pivot axis and the diffraction grating moves across an incident light beam and simultaneously rotates with respect to it, the diffracted beam travels back along the incident path. Thus, the source and detector of a laser position measurement system can remain fixed while measuring the position of a rotary actuator arm to which the diffraction grating is affixed. Due to its low mass and low cost, the diffraction grating can be attached to a rotary actuator arm, sealed into a disk file, used to servo-write the disk file, and left in the disk file when shipped, thus obviating the need for a clean room environment in which to perform the servo-write process.
摘要翻译：旋转致动器数据记录盘文件设置有用于测量旋转致动器臂的角位置的回射衍射光栅。衍射光栅具有沿衍射光栅的长度变化的衍射图案。间距的变化被布置成使得当旋转致动器臂围绕其枢转轴线摆动并且衍射光栅移动穿过入射光束并且同时相对于其旋转时，衍射光束沿着入射路径返回。因此，激光位置测量系统的源和检测器可以在测量附着有衍射光栅的旋转致动器臂的位置时保持固定。由于其质量低且成本低，衍射光栅可以连接到旋转执行器臂上，密封到磁盘文件中，用于伺服写入磁盘文件，并在发货时留在磁盘文件中，因此不需要一个洁净室环境，用于执行伺服写入过程。

46. 发明授权

US5210660A Sectored servo independent of data architecture 失效
标题翻译：数据架构独立的服务器
公开(公告)号：US5210660A
公开(公告)日：1993-05-11
申请号：US466194
申请日：1990-01-17
申请人： Steven R. Hetzler
发明人： Steven R. Hetzler
IPC分类号： G11B20/10 , G11B20/12 , G11B20/14 , G11B21/10 , G11B27/30
CPC分类号： G11B20/10 , G11B20/1201 , G11B20/1258 , G11B27/3027 , G11B5/59655 , G11B2020/1087 , G11B2020/10879 , G11B2020/10916 , G11B2020/1257 , G11B2020/1282 , G11B2220/20 , G11B2220/90
摘要： A data recording apparatus, such as a disk drive or tape drive is described wherein servo sectors written on a disk (or servo sections written on a tape) are equally spaced on a given track and read during seek, settle and track following operations. An algorithm is used to determine the allowable time separation between servo sectors (or sections) on a track and lengths of associated data sections, such as data sectors or variable length records, that may be accommodated on the disk or tape in such manner that each of the servo sectors (or sections) equally spaced on a given track is located within a data field of a data sector or within an identification region or immediately after an address indicating mark (such as address mark or index mark). The rate at which the servo sector (or section) is sampled is constant and independent of the number and lengths of the data sections. As a result of this independent relationship, this technique is suitable for CLD recording, to banded disks using sectored servo as in conventional FBA, and also even to non-sectored architectures, such as count-key-data (CKD), wherein the data is written in records of variable length, and to tape drives formatted in FBA or CKD.

47. 发明授权

US06928515B2 Integrated sector format-error correction code system and method for efficient writing in a disk array system 失效
标题翻译：集成扇区格式纠错码系统和方法，用于在磁盘阵列系统中高效写入
公开(公告)号：US06928515B2
公开(公告)日：2005-08-09
申请号：US10291087
申请日：2002-11-09
申请人： Martin Aureliano Hassner , Steven R. Hetzler , Spencer W. Ng
发明人： Martin Aureliano Hassner , Steven R. Hetzler , Spencer W. Ng
IPC分类号： G06F11/10 , G06F12/00
CPC分类号： G06F11/1076 , G06F2211/1011
摘要： A system and associated method efficiently complete write commands in an ISF disk drive/RAID system with minimal disk accesses to the underlying disk drives. The system updates data in a parity-based disk array system by receiving a write command to write new data. The present system minimizes the number of disk accesses. The present system completes the same or comparable write commands in a total of four accesses to the disk drives. This is realized by combining the read-modify-write operation of updating one or more sectors in an ISF cluster with the read-modify-write operation associated with updating one or more sectors in a parity-based array system, such as a RAID-5 system.
摘要翻译：系统和相关方法可有效地完成在ISF磁盘驱动器/ RAID系统中的写入命令，同时对磁盘驱动器的磁盘访问最少。系统通过接收写入新数据的写入命令来更新基于奇偶校验的磁盘阵列系统中的数据。本系统使磁盘访问次数最小化。本系统在对磁盘驱动器的总共四次访问中完成相同或相当的写入命令。这通过将在ISF群集中更新一个或多个扇区的读取 - 修改 - 写入操作与基于奇偶校验的阵列系统中的更新一个或多个扇区（例如RAID- 5系统。

48. 发明授权

US5438559A Method for locating physical sectors in a fixed block architecture embedded servo disk file #14 失效
标题翻译：在固定块体系结构嵌入式伺服磁盘文件中定位物理扇区的方法
公开(公告)号：US5438559A
公开(公告)日：1995-08-01
申请号：US327528
申请日：1994-10-20
申请人： John S. Best , Steven R. Hetzler
发明人： John S. Best , Steven R. Hetzler
IPC分类号： G11B20/10 , G11B20/12 , G11B20/18 , G11B27/10 , G11B27/30 , G11B3/90 , G11B5/09
CPC分类号： G11B20/1883 , G11B20/1252 , G11B27/3027 , G11B2020/1234 , G11B2020/1255 , G11B2220/20
摘要： A data recording disk file is provided with a fixed block architecture sector format that eliminates the ID region. The servo region contains sector identification information in the form of a start-of-track indicating mark recorded in a selected sector of each track and a start-of-sector indicating mark recorded in each sector. A full track number identifier is encoded in the position field within the servo region of each sector. A look-up table is built at format time to map bad sectors out of the disk file. The table contains entries for each cluster of contiguous bad sectors, and is searched at runtime to provide conversion of logical sector location identifiers to physical sector location identifiers.
摘要翻译：数据记录磁盘文件具有消除ID区域的固定块结构扇区格式。伺服区域包含记录在每个磁道的选定扇区中的轨迹开始指示标记的形式的扇区识别信息和记录在每个扇区中的扇区开始指示标记。在每个扇区的伺服区域内的位置字段中编码完整轨道号标识符。在格式化时间内建立查表，将坏扇区映射出磁盘文件。该表包含连续坏扇区的每个簇的条目，并且在运行时搜索以提供逻辑扇区位置标识符到物理扇区位置标识符的转换。

49. 发明授权

US5073834A Disk file or tape drive with high servo sample rate embedding additional servo sectors within individual data sectors 失效
标题翻译：具有高服务速率的磁盘文件或磁带驱动器在个人数据部门中嵌入附加服务器
公开(公告)号：US5073834A
公开(公告)日：1991-12-17
申请号：US466195
申请日：1990-01-17
申请人： John S. Best , Steven R. Hetzler , William J. Kabelac , David A. Thompson
发明人： John S. Best , Steven R. Hetzler , William J. Kabelac , David A. Thompson
IPC分类号： G11B5/584 , G11B5/596 , G11B20/12 , G11B21/10
CPC分类号： G11B20/1201 , G11B21/10 , G11B5/584 , G11B5/59633 , G11B2020/1255 , G11B2020/1282 , G11B2220/2508 , G11B2220/90
摘要： A method and means is described for writing data on a recording medium, such as a disk or tape, containing servo samples in such manner that the number of servo samples is increased with a minimal increase in overhead (non-data) regions. The tracks on the medium are divided into a plurality of maxi sections, each of which contains all fields with servo and associated overhead information and also a data field. At least one micro servo section containing only a portion of said information is located within each data field.As each micro servo section passes by an associated recording head, writing and reading of data is temporarily interrupted, but resumed when the micro servo section moves beyond the head, in such manner as to require minimal resynchronization of said data during reading.Using a phase continuous clock, data is written in both portions of a data field to either side of each micro servo section in one pass of the disk or tape relative to the head. The micro servo sections contain no timing reference address mark and require no data encoder/decoder flush or synchronization byte to resume reading in the portion of the data field following each micro servo section.

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