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1. 发明授权

US5426544A Sensitivity correcting circuit of servo signal detection on data surface and offset measuring circuit in magnetic disk unit 失效
标题翻译：磁盘单元数据表面伺服信号检测灵敏度校正电路及偏移测量电路
公开(公告)号：US5426544A
公开(公告)日：1995-06-20
申请号：US194256
申请日：1994-02-10
申请人： Teruyuki Narita , Atsushi Sato , Masao Tsunekawa , Hideaki Tanaka
发明人： Teruyuki Narita , Atsushi Sato , Masao Tsunekawa , Hideaki Tanaka
IPC分类号： G11B5/55 , G11B5/596 , G11B19/04
CPC分类号： G11B5/59627 , G11B19/04 , G11B5/5565
摘要： A sensitivity correcting circuit offsets a data head outwardly from an ontrack position by a given quantity (X1), reads first and second servo information (A, B) to provide signals (V.sub.A, V.sub.B), and detects a difference (V1) between the peak values of the signals. Also, the system offsets the data head inwardly from the ontrack position by a given quantity (X2), reads the first and second servo information (A, B) to provide signals (V.sub.A, V.sub.B), and detects a difference (V2) between the peak values of the signals (V.sub.A, V.sub.B). The circuit then computes a proportional coefficient K according to the detected values (V1, V2), and according to the proportional coefficient, finds an offset specific to the data head. Or an offset measuring circuit comprises an offset detector for detecting offsets of data heads relative to a servo head according to servo information read by the data heads on data surfaces of the disk media; a measurement timing setting circuit for instructing the offset detector to start a detection process according to a predetermined time schedule; and an interrupter for interrupting, if the command control section decodes an access command such as a read or write command provided by the host unit, the offset detection process, executing the access command at first, and resuming the offset detection process after the access command is completed when the detection process by the offset detector is executed.
摘要翻译：灵敏度校正电路将数据头从导轨位置向外偏移给定量（X1），读取第一和第二伺服信息（A，B）以提供信号（VA，VB），并且检测第一和第二伺服信息信号的峰值。此外，系统将数据头从入口位置向内偏移给定量（X2），读取第一和第二伺服信息（A，B）以提供信号（VA，VB），并且检测第二和第二伺服信息（VA，VB）之间的差（V2）信号的峰值（VA，VB）。然后，电路根据检测值（V1，V2）计算比例系数K，并根据比例系数找到数据头特有的偏移量。或者偏移测量电路包括偏移检测器，用于根据由磁盘介质的数据表面上的数据头读取的伺服信息来检测数据磁头相对于伺服磁头的偏移; 测量定时设定电路，用于指示偏移检测器根据预定时间表开始检测处理; 以及用于中断的断续器，如果命令控制部分解码由主机单元提供的诸如读或写命令之类的访问命令，则偏移检测处理首先执行访问命令，并且在访问命令之后恢复偏移检测处理在执行偏移检测器的检测处理时完成。

2. 发明授权

US5347410A Sensitivity correcting circuit of servo signal detection on data surface and offset measuring circuit in magnetic disk unit 失效
标题翻译：磁盘单元数据表面伺服信号检测灵敏度校正电路及偏移测量电路
公开(公告)号：US5347410A
公开(公告)日：1994-09-13
申请号：US875647
申请日：1992-04-28
申请人： Teruyuki Narita , Atsushi Sato , Masao Tsunekawa , Hideaki Tanaka
发明人： Teruyuki Narita , Atsushi Sato , Masao Tsunekawa , Hideaki Tanaka
IPC分类号： G11B5/55 , G11B5/596 , G11B19/04
CPC分类号： G11B5/59627 , G11B19/04 , G11B5/5565
摘要： A sensitivity correcting circuit offsets a data head outwardly from an ontrack position by a given quantity (X1), reads first and second servo information (A, B) to provide signals (V.sub.A, V.sub.B), and detects a difference (V1) between the peak values of the signals. Also, the system offsets the data head inwardly from the ontrack position by a given quantity (X2), reads the first and second servo information (A, B) to provide signals (V.sub.A, V.sub.B), and detects a difference (V2) between the peak values of the signals (V.sub.A,V.sub.B). The circuit then computes a proportional coefficient K according to the detected values (V1, V2), and according to the proportional coefficient, finds an offset specific to the data head. Or an offset measuring circuit comprises an offset detector for detecting offsets of data heads relative to a servo head according to servo information read by the data heads on data surfaces of the disk media; a measurement timing setting circuit for instructing the offset detector to start a detection process according to a predetermined time schedule; and an interrupter for interrupting, if the command control section decodes an access command such as a read or write command provided by the host unit, the offset detection process, executing the access command at first, and resuming the offset detection process after the access command is completed when the detection process by the offset detector is executed.
摘要翻译：灵敏度校正电路将数据头从导轨位置向外偏移给定量（X1），读取第一和第二伺服信息（A，B）以提供信号（VA，VB），并且检测第一和第二伺服信息信号的峰值。此外，系统将数据头从入口位置向内偏移给定量（X2），读取第一和第二伺服信息（A，B）以提供信号（VA，VB），并且检测第二和第二伺服信息（VA，VB）之间的差（V2）信号的峰值（VA，VB）。然后，电路根据检测值（V1，V2）计算比例系数K，并根据比例系数找到数据头特有的偏移量。或者偏移测量电路包括偏移检测器，用于根据由磁盘介质的数据表面上的数据头读取的伺服信息来检测数据磁头相对于伺服磁头的偏移; 测量定时设定电路，用于指示偏移检测器根据预定时间表开始检测处理; 以及用于中断的断续器，如果命令控制部分解码由主机单元提供的诸如读或写命令之类的访问命令，则偏移检测处理首先执行访问命令，并且在访问命令之后恢复偏移检测处理在执行偏移检测器的检测处理时完成。

3. 发明授权

US5659437A Data storage apparatus having servo control system 失效
标题翻译：具有伺服控制系统的数据存储装置
公开(公告)号：US5659437A
公开(公告)日：1997-08-19
申请号：US385661
申请日：1995-02-07
申请人： Masao Tsunekawa , Mitsuo Kamimura , Eisaku Takahashi
发明人： Masao Tsunekawa , Mitsuo Kamimura , Eisaku Takahashi
IPC分类号： G11B21/08 , G11B5/596 , G11B21/10
CPC分类号： G11B5/59688
摘要： Two-phase servo patterns are recorded on a servo area of a data medium of a data storage apparatus such that patterns Q+, N+, N- and Q- are recorded in the stated order, there being a phase shift of 90 degrees between position information N and position information Q.
摘要翻译：两相伺服模式被记录在数据存储装置的数据介质的伺服区上，使得以所述顺序记录图形Q +，N +，N-和Q-，在位置信息之间存在90度的相移 N和位置信息Q.

4. 发明授权

US5638307A Apparatus having source power control unit responsive to voltage fluctuation 失效
标题翻译：具有响应于电压波动的源功率控制单元的装置
公开(公告)号：US5638307A
公开(公告)日：1997-06-10
申请号：US410687
申请日：1995-03-27
申请人： Mitsuo Kamimura , Masao Tsunekawa , Eisaku Takahashi
发明人： Mitsuo Kamimura , Masao Tsunekawa , Eisaku Takahashi
IPC分类号： G06F1/26 , G06F1/30 , G11B19/00 , G11B19/20 , H02P23/06 , G06F1/00 , G11B5/52 , H02P7/68
CPC分类号： H02P29/026 , G06F1/30 , H02P23/06
摘要： A disk apparatus wherein a disk is rotated by a rotating motor, and a source power supplied to the rotating motor is monitored, which includes: a memory unit for storing an initial source voltage value before a process of a rotating motor acceleration is started; a detecting unit for periodically detecting a source voltage value related to the source power; a comparing unit for comparing the source voltage value, detected by the detecting unit during the process of the rotating motor acceleration, with the initial source voltage value stored in the memory unit, and for outputting a voltage fluctuation indicated by a difference between the source voltage value and the initial source voltage value; and a control unit for setting a quantity of the source power supplied to the rotating motor, to a smaller quantity in response to the voltage fluctuation output by the comparing unit.
摘要翻译：一种磁盘装置，其中盘被旋转电动机旋转，并且监测提供给旋转电动机的源电力，其包括：用于在开始旋转电动机加速的处理之前存储初始源电压值的存储单元; 用于周期性地检测与源功率相关的源电压值的检测单元; 比较单元，用于将由旋转马达加速过程中的检测单元检测的源电压值与存储在存储单元中的初始源电压值进行比较，并输出由源电压值和初始源电压值; 以及控制单元，用于响应于由比较单元输出的电压波动，将提供给旋转电动机的源电力量设定为较小量。

5. 发明授权

US5880904A Disk drive having a thickness equal to an IC memory card 失效
标题翻译：磁盘驱动器的厚度等于IC存储卡
公开(公告)号：US5880904A
公开(公告)日：1999-03-09
申请号：US406807
申请日：1995-03-20
申请人： Yoshifumi Mizoshita , Tomoyoshi Yamada , Yasumasa Kuroba , Toru Kouhei , Takao Sugawara , Masaru Matsumoto , Hiroyuki Mase , Masao Tsunekawa , Shinji Koganezawa , Keiji Aruga
发明人： Yoshifumi Mizoshita , Tomoyoshi Yamada , Yasumasa Kuroba , Toru Kouhei , Takao Sugawara , Masaru Matsumoto , Hiroyuki Mase , Masao Tsunekawa , Shinji Koganezawa , Keiji Aruga
IPC分类号： G11B5/54 , G11B17/028 , G11B19/20 , G11B21/12 , G11B21/22 , G11B25/04 , G11B33/08 , G11B33/12 , H02K7/04 , H02K7/08 , H02K21/24 , H02K33/18 , H02K41/035 , G11B5/012
CPC分类号： G11B33/121 , G11B17/028 , G11B17/0282 , G11B17/0287 , G11B19/20 , G11B19/2009 , G11B21/12 , G11B21/22 , G11B25/043 , G11B33/08 , G11B33/122 , G11B5/54 , H02K21/24 , H02K33/18 , H02K41/0358 , H02K7/04 , H02K7/086
摘要： A compact card type disk drive includes a housing (21) for accommodating a disk for storing data, disk drive for rotating the disk, a head assembly for writing and reading data to and from the disk and an electronic circuit including at least an interface circuit (39), the latter three being accommodated in the housing. A connector (42) connected to the electronic circuit is fixed to the outside portion of the housing (21). The electronic circuit preferably contains a read/write circuit (36) and a control circuit (38). The housing (21) preferably includes a lower base (22) and an upper cover (23), and a printed circuit board (14) is disposed along the inner wall of either one, or both, of the base (22) and the cover (23). The outer dimension of the plane of the disk drive is preferably about 85.6 mm.times.54 mm, and typically, the outer thickness is 5 mm. Preferably, one connector (42) is disposed on either one of the minor sides of the housing (21). The connector (42) is disposed at the substantial center of the housing in the direction of its thickness and is fixed to one of the minor sides of the housing (21) which opposes the head assembly with respect to the disk.
摘要翻译：一种紧凑型卡式磁盘驱动器包括用于容纳用于存储数据的盘的壳体（21），用于旋转盘的盘驱动器，用于向盘进行数据读取和从盘读取数据的头组件和至少包括接口电路（39），后三个被安置在房屋内。连接到电子电路的连接器（42）固定到壳体（21）的外部。电子电路优选地包含读/写电路（36）和控制电路（38）。壳体（21）优选地包括下基部（22）和上盖（23），并且印刷电路板（14）沿着基座（22）的一个或两个的内壁设置，并且盖（23）。磁盘驱动器的平面的外部尺寸优选为约85.6mm×54mm，并且通常外部厚度为5mm。优选地，一个连接器（42）设置在壳体（21）的任一个次侧上。连接器（42）沿其厚度方向设置在壳体的大致中心处并且被固定到相对于盘相对于头组件的壳体（21）的一个小侧。

6. 发明授权

US5815338A Apparatus and method of detecting head position error in magnetic disk drive 失效
标题翻译：磁盘驱动器磁头位置误差检测装置及方法
公开(公告)号：US5815338A
公开(公告)日：1998-09-29
申请号：US419840
申请日：1995-04-11
申请人： Masao Tsunekawa , Mutsumi Takemoto , Harumi Seino
发明人： Masao Tsunekawa , Mutsumi Takemoto , Harumi Seino
IPC分类号： G11B5/55 , G11B5/596 , G11B21/08 , G11B21/10
CPC分类号： G11B5/59627 , G11B21/083 , G11B21/106 , G11B5/5534 , G11B5/59605 , G11B5/59688 , G11B5/59644
摘要： In a disk drive for detecting a position error distance of a head with respect to a measuring cylinder by reading servo data recorded on the measuring cylinder on a data surface of a disk, an apparatus and method of detecting a position error of a data head are provided which comprises repeatedly reading patterns written in advance relating to a plurality of kinds of servo data in at least three regions on the outer or inner peripheral side of the measuring cylinder or in both of them, and comparing the read results and detecting an accurate position error distance of the data head. More preferably, the apparatus and method include reading a plurality of kinds of patterns written in advance relating to servo data in at least three regions on the outer and inner peripheral sides of the measuring cylinder, detecting a rough position error distance of the data head from the measuring cylinder on the basis of part of the combinations of a plurality of kinds of patterns, and detecting a detailed position error distance of the data head on the basis of other part of combination of a plurality of kinds of patterns. Further preferably, the apparatus and method include alternately reading a plurality of kinds of patterns in two phases.
摘要翻译：在通过读取记录在盘的数据表面上的量筒上的伺服数据来检测头相对于测量筒的位置误差距离的磁盘驱动器中，检测数据头的位置误差的装置和方法其包括在量筒的外周侧或内周侧的至少三个区域中重复读取预先写入的与多种伺服数据有关的图案，并且比较读取结果并检测精确位置数据头的误差距离。更优选地，该装置和方法包括在量筒的外周侧和内周侧的至少三个区域中读取与伺服数据相关的预先写入的多种图案，检测数据头的粗略位置误差距离基于多种图案的组合的一部分的量筒，并且基于多种图案的组合的其他部分来检测数据头的详细位置误差距离。进一步优选地，该装置和方法包括以两相交替地读取多种图案。

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