公开(公告)号：US5128946A

公开(公告)日：1992-07-07

申请号：US289016

申请日：1988-12-23

申请人： Tsukasa Ogino ,  Shigeyuki Taniwa

发明人： Tsukasa Ogino ,  Shigeyuki Taniwa

IPC分类号： G11B7/0033 ,  G11B20/18

CPC分类号： G11B20/1879 ,  G11B20/1866 ,  G11B7/0033

摘要： An information recording-reproducing method is disclosed. An error correction code of M bytes and N bytes is imparted in a vertical direction and a horizontal direction, respectively, to data of m.times.n bytes. A signal of (m+M).times.(n+N) bytes (m, n, M and N being one or an integer greater than one) is produced. The signal to which the error correction code has been imparted is written-in to a recording medium. The written-in signal is read out from the recording medium. Error correction on the read-out signal is effected in only one of the vertical direction and the horizontal direction by the use of the error correction code included in the signal. A determination is made of the occurrence of abnormality in the writing-in when all the errors in the signal cannot be corrected by the error correction in the one direction. The signal for which has been determined that no abnormality exists in the writing-in is re-read out from the recording medium and error correction on the re-read-out signal in the vertical direction and the horizontal direction is effected by the use of the error correction code included in the signal. Data is thereby reproduced.

公开(公告)号：US07353291B1

公开(公告)日：2008-04-01

申请号：US09597145

申请日：2000-06-20

申请人： Tsukasa Ogino

发明人： Tsukasa Ogino

IPC分类号： G06F15/177

CPC分类号： H04L67/1008 ,  H04L67/1002 ,  H04L67/101 ,  H04L67/1021 ,  H04L67/1023

摘要： There is disclosed a network status server for receiving an inquiry from a web server accessed by a client, and using path information and determining the optimum web server to return a response to the accessed web server. The web server receiving the response instructs the client to access the optimum web server from the next time. In this constitution, accesses among the dispersed/arranged web server sites are leveled, and access loads can be leveled even among the web servers in the respective web server sites. Moreover, the client can access the optimum web server.

摘要翻译： 公开了一种网络状态服务器，用于从由客户端访问的web服务器接收查询，并且使用路径信息并确定最佳web服务器来向所访问的web服务器返回响应。 接收到响应的Web服务器指示客户端从下一次访问最佳Web服务器。 在这种结构中，分散/布置的Web服务器站点之间的访问被调平，并且即使在各个web服务器站点中的web服务器之间也可以调平访问负载。 此外，客户端可以访问最佳的Web服务器。

公开(公告)号：US5768226A

公开(公告)日：1998-06-16

申请号：US669648

申请日：1996-06-24

申请人： Tsukasa Ogino

发明人： Tsukasa Ogino

IPC分类号： G11B5/55 ,  G11B7/085 ,  G11B7/09 ,  G11B7/095 ,  G11B11/105 ,  G11B21/08 ,  G11B7/00 ,  G11B5/596

CPC分类号： G11B7/08529 ,  G11B21/083 ,  G11B21/085 ,  G11B5/5547 ,  G11B5/5582 ,  G11B11/10556 ,  G11B7/0946 ,  G11B7/0953

摘要： In an information recording/reproducing apparatus, a head is moved across tracks on a recording medium to thereby perform a coarse seek to a position near a target position. A recording/reproducing portion of the head is moved in the track intersection direction to thereby perform a fine seek to the target position. A moving velocity of the portion of the head with respect to the medium is detected by a first detector. A target moving velocity is caluculated in accordance with a remaining distance to the target position of the portion of the head. A moving displacement or moving velocity of the portion of the head is detected by a second detector. A detection value from the first detector is corrected on the basis of a detection value from the second detector to eliminate a variation component generated by a disturbance of the portion of the head.

摘要翻译： 在信息记录/再现装置中，磁头在记录介质上的磁道上移动，从而对目标位置附近的位置执行粗略寻找。 头部的记录/再现部分在轨道交叉方向上移动，从而对目标位置进行精细寻找。 通过第一检测器检测头部相对于介质的部分的移动速度。 根据与头部的目标位置的剩余距离来对目标移动速度进行压缩。 通过第二检测器检测头部的移动位移或移动速度。 基于来自第二检测器的检测值来校正来自第一检测器的检测值，以消除由头部的部分的干扰产生的变化分量。

公开(公告)号：US5699330A

公开(公告)日：1997-12-16

申请号：US321616

申请日：1994-10-12

申请人： Tsukasa Ogino ,  Hisatoshi Baba ,  Hirotake Ando ,  Yoshihiro Saga

发明人： Tsukasa Ogino ,  Hisatoshi Baba ,  Hirotake Ando ,  Yoshihiro Saga

IPC分类号： G11B7/09 ,  G11B11/10 ,  G11B11/105 ,  G11B19/00 ,  G11B17/22

CPC分类号： G11B7/09 ,  G11B11/10576 ,  G11B11/10595 ,  G11B19/00

摘要： Input/output processing of information is controlled in a magnetooptical disc apparatus for recording and/or reproducing the information on a magnetooptical recording medium by irradiating a desired track of the recording medium with a light beam via an optical system. The servo control of the light beam such as tracking servo control, focusing servo control or the like is performed by causing interruption in the input/output processing control. When the apparatus activates, a parameter in the servo control is set on the basis of a reproduction signal amplitude of the information with a change in state of the servo control and a parameter in signal processing of the information is set in accordance with a reproduction signal amplitude of the information corresponding to the set parameter for the servo control.

摘要翻译： 信息的输入/输出处理被控制在磁光盘装置中，用于通过经由光学系统用光束照射记录介质的期望轨迹来在磁光记录介质上记录和/或再现信息。 通过引起输入/输出处理控制的中断来执行光束的伺服控制，例如跟踪伺服控制，聚焦伺服控制等。 当设备激活时，基于伺服控制状态改变的信息的再现信号振幅来设置伺服控制中的参数，并且根据再现信号设置信息的信号处理中的参数 对应于伺服控制的设定参数的信息的幅度。

公开(公告)号：US5583837A

公开(公告)日：1996-12-10

申请号：US409633

申请日：1995-03-22

申请人： Tsukasa Ogino ,  Hisatoshi Baba

发明人： Tsukasa Ogino ,  Hisatoshi Baba

IPC分类号： G05B13/02 ,  G11B7/09 ,  G11B7/095 ,  G11B7/00

CPC分类号： G11B7/0941 ,  G05B13/0225 ,  G11B7/0953

摘要： An automatic loop gain control apparatus in a servo control apparatus of a closed loop arrangement which positions a control object with respect to a reference. The apparatus includes an adder for adding a reference signal of a predetermined frequency to a control signal in the closed loop, a first detector for detecting a peak value of predetermined frequency components of the control signal in a state before the control signal is input to the adder at every predetermined cycle, a second detector for detecting a peak value of predetermined frequency components of an output output from the adder at every predetermined cycle, and a digital signal processor for performing a digital computation using the peak value detected by the first detector and the peak value detected by the second detector and for adjusting the gain of the control loop on the basis of the result of the computation.

摘要翻译： 一种闭环装置的伺服控制装置中的自动环路增益控制装置，其将控制对象相对于基准定位。 该装置包括：加法器，用于将闭合回路中的控制信号的预定频率的参考信号相加;第一检测器，用于在将控制信号输入到该控制信号之前的状态下检测控制信号的预定频率分量的峰值 每个预定周期加法器的第二检测器，用于检测来自加法器在每个预定周期的输出的预定频率分量的峰值的第二检测器;以及数字信号处理器，用于使用由第一检测器检测的峰值进行数字运算， 由第二检测器检测的峰值，并根据计算结果调整控制回路的增益。

公开(公告)号：US5483510A

公开(公告)日：1996-01-09

申请号：US389628

申请日：1995-02-15

申请人： Tsukasa Ogino

发明人： Tsukasa Ogino

IPC分类号： G11B7/09

CPC分类号： G11B7/09

摘要： The present invention provides an optical information recording and reproducing apparatus wherein a light beam spot is properly illuminated onto a recording medium by detecting a tracking error signal and/or a focus error signal in a time shared mode and by activating a tracking actuator and/or a focus actuator, thereby performing the recording and reproducing of information. The apparatus of the present invention includes a device for approximating an error signal on the basis of a plurality of error signals previously detected, when an error signal cannot be detected during an error signal detecting operation.

摘要翻译： 本发明提供了一种光信息记录和再现装置，其中通过在时间共享模式中检测跟踪误差信号和/或聚焦误差信号并且通过激活跟踪致动器和/或 聚焦致动器，从而执行信息的记录和再现。 本发明的装置包括：当在误差信号检测操作期间不能检测到误差信号时，基于先前检测到的多个误差信号来近似误差信号的装置。

公开(公告)号：US5343453A

公开(公告)日：1994-08-30

申请号：US155563

申请日：1993-11-22

申请人： Tsukasa Ogino

发明人： Tsukasa Ogino

IPC分类号： G11B7/085 ,  G11B19/04 ,  G11B19/12 ,  G11B19/28 ,  G11B20/18 ,  G11B27/30

CPC分类号： G11B20/18 ,  G11B19/04 ,  G11B19/12 ,  G11B19/28 ,  G11B27/3027 ,  G11B7/08505

摘要： An apparatus for recording and/or reproducing information with respect to a disk-like recording medium having a recording surface divided into a plurality of concentric circular zones each including a plurality of tracks with an address recorded thereon at an angular velocity or frequency varying with the individual zones, includes, a device for scanning the tracks for recording and/or reproducing information, a device for detecting an address of a track being scanned by the recording and/or reproducing device, a device for shifting the recording and/or reproducing device from a track being scanned to another track, and a control device for determining, if an address of a desired track cannot be detected when accessing the desired track during shifting of the recording and/or reproducing device to a zone different from a zone to which the desired track belongs, and shifting, as a result, the recording and/or reproducing device to a different track.

摘要翻译： 一种用于记录和/或再现关于盘状记录介质的信息的装置，所述记录介质具有被分成多个同心圆形区域的记录表面，所述多个同心圆形区域包括多个轨道，其中记录有地址， 单独的区域包括用于扫描用于记录和/或再现信息的轨道的装置，用于检测由记录和/或再现装置扫描的轨道的地址的装置，用于移动记录和/或再现装置的装置 从被扫描的轨道到另一个轨道，以及控制装置，用于确定在将记录和/或再现装置移动到不同于区域的区域时，当访问期望的轨道时是否不能检测到期望的轨道的地址 期望的轨道属于，并且结果将记录和/或再现装置移动到不同的轨道。

公开(公告)号：US5235577A

公开(公告)日：1993-08-10

申请号：US925290

申请日：1992-08-06

申请人： Tsukasa Ogino

发明人： Tsukasa Ogino

IPC分类号： G11B7/085

CPC分类号： G11B7/08505

摘要： An information recording and/or reproducing apparatus includes an optical system for irradiating a light beam to one of tracks arranged in parallel on a recording medium, an actuator for moving the optical system across the tracks, a circuit for alternately applying a jumping signal and a braking signal of the opposite polarity to the actuator to direct the light beam to a desired track, a tracking signal detector for intermittently sampling a tracking error signal varying between a positive value and a negative value with the movement of the optical system across the tracks, a memory for storing the sampled signals, and a switching timing detector for multiplying or adding the sampled signal and the previously sampled signal stored in the memory and causing the signal application circuit to switch from the jumping signal to the braking signal when the product or sum is zero or negative.

摘要翻译： 信息记录和/或再现装置包括：用于将光束照射到并行布置在记录介质上的轨道之一的光学系统，用于使光学系统跨过轨道移动的致动器，用于交替施加跳跃信号的电路和 制动与致动器相反极性的信号以将光束引导到期望的轨道;跟踪信号检测器，用于间断地采样在正值和负值之间变化的跟踪误差信号，随着光学系统在轨道上的移动， 用于存储采样信号的存储器和用于将采样信号和存储在存储器中的先前采样信号相乘或相加的切换定时检测器，并且当产品或总和使得信号施加电路从跳跃信号切换到制动信号 为零或负。

公开(公告)号：US5878005A

公开(公告)日：1999-03-02

申请号：US523446

申请日：1995-09-05

申请人： Nobuyuki Tonegawa ,  Tsukasa Ogino

发明人： Nobuyuki Tonegawa ,  Tsukasa Ogino

IPC分类号： G05B19/042 ,  G11B7/085 ,  G11B7/09 ,  G11B11/105 ,  G11B19/04 ,  G11B21/10 ,  G11B7/00

CPC分类号： G11B21/106 ,  G05B19/042 ,  G11B19/04 ,  G05B2219/23218 ,  G05B2219/23239 ,  G05B2219/25411 ,  G11B11/10595 ,  G11B7/08517 ,  G11B7/08529 ,  G11B7/09

摘要： An information recording/reproducing apparatus for recording information on and/or reproducing information from a recording medium using a head. The apparatus includes a single processor and a memory device. The single processor executes data input/output processing and servo processing of a light beam from the head, while alternately switching at a predetermined period. The servo processing is divided into a plurality of blocks which are cyclically executed in turn for each predetermined period and processing required to be executed in each period is set in each block and processing not required to be executed in each period is set in only a specific block. The memory device stores contents of the processing for the respective blocks.

摘要翻译： 一种用于使用头部从记录介质记录信息和/或再现信息的信息记录/再现装置。 该装置包括单个处理器和存储器装置。 单个处理器执行来自头部的光束的数据输入/输出处理和伺服处理，同时以预定周期交替切换。 伺服处理被分成多个块，这些块在每个预定周期内依次循环执行，并且在每个块中设置每个周期中需要执行的处理，并且在每个周期中不需要执行的处理仅被设置为特定的 块。 存储装置存储各块的处理的内容。

公开(公告)号：US5646915A

公开(公告)日：1997-07-08

申请号：US350155

申请日：1994-11-29

申请人： Tsukasa Ogino

发明人： Tsukasa Ogino

IPC分类号： G11B7/085 ,  G11B21/08 ,  G11B7/00

CPC分类号： G11B7/08529 ,  G11B7/08541

摘要： An information recording and/or reproducing apparatus includes a head for effecting information recording on and/or information reproduction from a recording medium. The head is moved to a desired track on the recording medium by a driving device. A tracking error signal of the head, generated when the head is moved by the driving device is detected. At every predetermined period of the tracking error signal, the head drive velocity is calculated from a distance corresponding to the predetermined period and a time corresponding to the predetermined period. The calculated velocity is corrected on the basis of an acceleration of the head and a time period during which the acceleration is applied, so that the driving device is controlled by use of the corrected drive velocity.

摘要翻译： 信息记录和/或再现装置包括用于从记录介质进行信息记录和/或信息再现的头部。 头部通过驱动装置移动到记录介质上的期望轨道。 检测头部由驱动装置移动时产生的头部的跟踪误差信号。 在跟踪误差信号的每个预定周期，从对应于预定周期的距离和对应于预定周期的时间计算头驱动速度。 基于头部的加速度和施加加速度的时间段来校正计算出的速度，从而通过使用校正的驱动速度来控制驱动装置。