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1. 发明授权

US5077719A Optical disk access system 失效
标题翻译：光盘访问系统
公开(公告)号：US5077719A
公开(公告)日：1991-12-31
申请号：US235496
申请日：1988-08-24
申请人： Shigenori Yanagi , Masateru Sasaki , Akira Minami , Toshitaka Iwamoto , Shigeyoshi Tanaka
发明人： Shigenori Yanagi , Masateru Sasaki , Akira Minami , Toshitaka Iwamoto , Shigeyoshi Tanaka
IPC分类号： G11B7/085 , G11B7/09
CPC分类号： G11B7/0945 , G11B7/08511 , G11B7/0908 , G11B7/094
摘要： An optical disk access system capable of varying the focus position of a beam spot illuminating the optical disk. The focus position of the beam spot is varied in accordance with a mode of operation of the optical disk system. The various focus positions are automatically selected by the optical disk access system by intentionally vibrating the beam spot in a radial direction of the optical disk and detecting the amount of light reflected from the optical disk while varying a signal that changes the focus position of the beam spot. The optical disk system automatically selects a value of the signal determining the focus position of the beam spot that corresponds to maximum values derived from the light reflected from the optical disk.

2. 发明授权

US6014349A Storage apparatus using variable read clock frequencies for reading ZCAV recording medium 失效
标题翻译：使用可变读取时钟频率读取ZCAV记录介质的存储设备
公开(公告)号：US6014349A
公开(公告)日：2000-01-11
申请号：US17853
申请日：1998-02-03
申请人： Masaaki Iwasaki , Shigenori Yanagi , Shigeyoshi Tanaka
发明人： Masaaki Iwasaki , Shigenori Yanagi , Shigeyoshi Tanaka
IPC分类号： G11B7/00 , G11B7/004 , G11B19/28 , G11B20/10 , G11B20/14 , H03L7/14 , H03L7/18 , H03L7/197 , G11B17/22 , G11B5/09
CPC分类号： H03L7/18 , G11B20/1403 , H03L7/143 , H03L7/197 , H03L2207/04
摘要： A frequency synthesizer generates, through setting of a frequency control value, a reference clock having a frequency necessary to read data from a medium. When reading data from an arbitrary position on the medium, a setting control unit sets in the frequency synthesizer a frequency control value corresponding to the zone position, thereby allowing the frequency synthesizer to control a reference clock frequency, and sets in a single or a plurality of processing units other than the frequency synthesizer a predetermined control value corresponding to the read position on the medium. A settling wait processing unit calculates a settling time T1 required for a frequency of the frequency synthesizer to become stable and a setting processing time T2 necessary for the setting control of the other processing unit, and defines as a wait time Tw a difference (T1-T2) between the settling time T1 and the setting processing time T2, during which wait time Tw a migration to the subsequent processing is kept waiting.
摘要翻译：频率合成器通过设置频率控制值来生成具有从介质读取数据所需的频率的参考时钟。当从介质上的任意位置读取数据时，设置控制单元在频率合成器中设置与区域位置对应的频率控制值，从而允许频率合成器控制参考时钟频率，并且设置为单个或多个处于与频率合成器以外的处理单元相对应于介质上的读取位置的预定控制值。建立等待处理单元计算频率合成器的频率变得稳定所需的建立时间T1和对其他处理单元的设置控制所需的设置处理时间T2，并将其定义为等待时间Tw的差（T1- 在建立时间T1和设定处理时间T2之间的等待时间Tw等待到后续处理的迁移。

3. 发明授权

US06522606B1 Optical pickup servo control apparatus with stored compensatory values 失效
标题翻译：具有存储补偿值的光学拾取伺服控制装置
公开(公告)号：US06522606B1
公开(公告)日：2003-02-18
申请号：US08419512
申请日：1995-04-07
申请人： Shigeyoshi Tanaka , Toru Ikeda , Shigenori Yanagi , Takashi Masaki
发明人： Shigeyoshi Tanaka , Toru Ikeda , Shigenori Yanagi , Takashi Masaki
IPC分类号： G11B700
CPC分类号： G11B7/094 , G11B7/0941
摘要： A servo control apparatus of an optical pickup in which an offset and a gain can be adjustable for each servo control apparatus, and influences caused by changes in environmental conditions and changes with time are reduced without a decrease in operational speed, and increase in size and an increase in cost is disclosed. The servo control apparatus includes a nonvolatile memory for storing compensatory values which correspond to differences of servo characteristics of each servo apparatus and which are measured with the assistance of external measurement instruments, and a compensation portion for compensating an optical pick-up servo signal according to the compensatory values stored in the nonvolatile memory.
摘要翻译：一种光学拾取器的伺服控制装置，其中对于每个伺服控制装置可以调节偏移和增益，并且在不降低操作速度的情况下降低环境条件的变化和随时间的变化的影响，并且尺寸和尺寸的增加披露了成本的增加。伺服控制装置包括非易失性存储器，用于存储对应于每个伺服装置的伺服特性的差异并且在外部测量仪器的帮助下测量的补偿值的补偿部分，以及用于补偿光拾取伺服信号的补偿部分存储在非易失性存储器中的补偿值。

4. 发明授权

US4985882A Track access control system for disk system, having eccentricity correction means 失效
标题翻译：磁盘系统跟踪访问控制系统，具有偏心校正装置
公开(公告)号：US4985882A
公开(公告)日：1991-01-15
申请号：US299018
申请日：1989-01-19
申请人： Shigeyoshi Tanaka , Shigenori Yanagi
发明人： Shigeyoshi Tanaka , Shigenori Yanagi
IPC分类号： G11B7/085 , G11B7/095 , G11B21/08
CPC分类号： G11B7/08517 , G11B21/085 , G11B7/0953
摘要： A track access control system for a disk storage system having an eccentricity correction unit. The eccentricity correction unit includes an eccentricity detecting unit, an eccentricity data storage unit and an eccentricity compensation unit. The eccentricity data storage unit includes a memory, an address generating circuit, a filter and a comparator. The comparator and the filter function as delta modulation means to provide digital eccentricity data to be stored in the memory. The filter also outputs analog eccentricity data to be used for compensation of the eccentricity.

5. 发明授权

US5812503A Positioning control system having an optical beam and a servo-error signal generating circuit for accurately irradiating a desired position 失效
标题翻译：具有光束的定位控制系统和用于精确照射所需位置的伺服误差信号发生电路
公开(公告)号：US5812503A
公开(公告)日：1998-09-22
申请号：US724299
申请日：1996-09-23
申请人： Akira Minami , Shigeyoshi Tanaka , Michio Matsuura , Hiromichi Kuwano , Kazuyuki Tamanoi
发明人： Akira Minami , Shigeyoshi Tanaka , Michio Matsuura , Hiromichi Kuwano , Kazuyuki Tamanoi
IPC分类号： G11B7/09 , G11B11/105 , H03G3/30 , G11B7/095
CPC分类号： H03G3/3084 , G11B11/10576 , G11B7/0941 , G11B7/0943
摘要： A positioning control system for performing recording/reproducing operations by irradiating an optical beam on a predetermined position on an optically recording medium includes a photo-detector constituted by at least two-divisional units and a servo-error signal generating circuit which can generate at least one servo-error signal in accordance with a difference between detection currents measured at the collectors of selected transistors in two pairs of transistors.
摘要翻译：一种用于通过在光学记录介质上的预定位置照射光束来执行记录/再现操作的定位控制系统包括由至少两分之一单元构成的光检测器和至少可产生的伺服误差信号发生电路根据在两对晶体管中的选定晶体管的集电极处测量的检测电流之间的差异，产生一个伺服误差信号。

6. 发明授权

US5566143A Positioning control system utilizing optical beam 失效
标题翻译：光束定位控制系统
公开(公告)号：US5566143A
公开(公告)日：1996-10-15
申请号：US96491
申请日：1993-07-22
申请人： Akira Minami , Shigeyoshi Tanaka , Michio Matsuura , Hiromichi Kuwano , Kazuyuki Tamanoi
发明人： Akira Minami , Shigeyoshi Tanaka , Michio Matsuura , Hiromichi Kuwano , Kazuyuki Tamanoi
IPC分类号： G11B7/09 , G11B11/105 , H03G3/30
CPC分类号： H03G3/3084 , G11B11/10576 , G11B7/0941 , G11B7/0943
摘要： A positioning control system for performing recording/reproducing operations by irradiating an optical beam to predetermined position on an optically recording medium, e,g., magneto-optical disk, includes a photo-detector constituted by at least two-divisional units; and a servo-error signal generating circuit which can generate at least one servo-error signal in accordance with a difference between the detection currents. Preferably, servo-error signal generating circuit includes at least one division circuit that has two pairs of transistors, two emitters in each pair of transistors being connected together into a common emitter, bias voltages of direct current type being applied to the respective bases of transistors on one side, the respective collectors of the transistors on one side being connected to a common connecting portion via resistors, the common connecting portion being connected to a power supply, the respective bases of transistors on the other side being connected together into a common base; and an integrating capacitor which is connected to the common base of transistors on the other side, and which integrates a difference between the current flowing through the common connecting portion and the reference current, to apply the thus integrated difference to the common base of transistors on the other side. Further, preferably, the photo-detector is connected to the common emitters in the respective pairs of transistors, so that the detection currents can flow through the common emitters.
摘要翻译：用于通过将光束照射到光学记录介质（例如，磁光盘）上的预定位置来执行记录/再现操作的定位控制系统包括由至少两分割单元构成的光检测器; 以及可以根据检测电流之间的差产生至少一个伺服误差信号的伺服误差信号发生电路。优选地，伺服误差信号发生电路包括至少一个具有两对晶体管的分频电路，每对晶体管中的两个发射极连接在一起成为共发射极，直流型偏置电压施加到晶体管的各个基极一方面，一侧的晶体管的集电极通过电阻器连接到公共连接部分，公共连接部分连接到电源，另一侧的晶体管的各个基极连接在一起成共同的基极 ; 以及积分电容器，其连接到另一侧的晶体管的公共基极，并且将流过公共连接部分的电流与参考电流之间的差积分，以将这样的积分差施加到晶体管的公共基极上另一边。此外，优选地，光检测器连接到各对晶体管中的公共发射极，使得检测电流可以流过公共发射器。

7. 发明授权

US4977551A Optical disk tracking control system and method having normalized tracking error control signal 失效
标题翻译：具有归一化跟踪误差控制信号的光盘跟踪控制系统和方法
公开(公告)号：US4977551A
公开(公告)日：1990-12-11
申请号：US166490
申请日：1988-03-10
申请人： Akira Minami , Shigeyoshi Tanaka
发明人： Akira Minami , Shigeyoshi Tanaka
IPC分类号： G11B7/09
CPC分类号： G11B7/0941
摘要： A tracking servo control system of an optical disk system produces a tracking control output signal for control of a tracking actuator which is adjusted to enable accurate positioning of a focussed light beam spot of the optical disk system at the center of a selected groove of a disk, for a variety of optical disks having various groove shapes. The output signal of a light receiver responsive to reflected image of the light beam spot focussed on the disk is processed to produce a tracking error signal:Y and a sum signal:X which are processed by a correction circuit for calculating the value: ##EQU1## where Z is a correction factor, the value of which is adjusted, to normalize the calculated value:E, in accordance with the peak detected value of E.

8. 发明授权

US5909415A Positioning control system which generates a servo-error signal in accordance with a difference between detection currents 失效
标题翻译：定位控制系统，根据检测电流之差产生伺服误差信号
公开(公告)号：US5909415A
公开(公告)日：1999-06-01
申请号：US947058
申请日：1997-10-08
申请人： Akira Minami , Shigeyoshi Tanaka , Michio Matsuura , Hiromichi Kuwano , Kazuyuki Tamanoi
发明人： Akira Minami , Shigeyoshi Tanaka , Michio Matsuura , Hiromichi Kuwano , Kazuyuki Tamanoi
IPC分类号： G11B7/09 , G11B11/105 , H03G3/30 , G11B7/095
CPC分类号： H03G3/3084 , G11B11/10576 , G11B7/0941 , G11B7/0943
摘要： A positioning control system for performing recording/reproducing operations by irradiating an optical beam to a predetermined position on an optical recording medium, e.g., magneto-optical disk. The control system includes a photo-detector constituted by at least two-divisional units, and a servo-error signal generating circuit which can generate at least one servo-error signal in accordance with a difference between the detection currents. Preferably, the servo-error signal generating circuit includes at least one division circuit that has two pairs of transistors, two emitters in each pair of transistors being connected together into a common emitter, bias voltages of a direct current type being applied to the respective bases of transistors on one side, and the respective collectors of the transistors on one side being connected to a common connecting portion via resistors. The common connecting portion is connected to a power supply, and the respective bases of transistors on the other side are connected together into a common base. An integrating capacitor which integrates a difference between the current flowing through the common connecting portion and the reference current, is connected to the common base of the transistors on the other side.
摘要翻译：一种定位控制系统，用于通过将光束照射到诸如磁光盘的光学记录介质上的预定位置来进行记录/再现操作。控制系统包括由至少两分之一单元构成的光检测器，以及可根据检测电流之间的差产生至少一个伺服误差信号的伺服误差信号发生电路。优选地，伺服误差信号发生电路包括具有两对晶体管的至少一个分频电路，每对晶体管中的两个发射极连接在一起成为公共发射极，直流型偏置电压施加到各个基极的晶体管的一侧，并且一侧的晶体管的各个集电极通过电阻器连接到公共连接部分。公共连接部分连接到电源，另一侧的晶体管的各个基极连接在一起成共同的基座。将流过公共连接部分的电流与参考电流之间的差积分的积分电容器连接到另一侧的晶体管的公共基极。

9. 发明授权

US06983383B1 Method for providing priority to an ac adaptor if the input to the ac adaptor is above a predetermined value even if the power supply via an interface is present 失效
标题翻译：即使通过接口的电源存在，如果AC适配器的输入超过预定值，则为交流电适配器提供优先级的方法
公开(公告)号：US06983383B1
公开(公告)日：2006-01-03
申请号：US09452161
申请日：1999-12-01
申请人： Shuko Saito , Akira Minami , Shigeyoshi Tanaka , Satoshi Furuta
发明人： Shuko Saito , Akira Minami , Shigeyoshi Tanaka , Satoshi Furuta
IPC分类号： G06F1/26
CPC分类号： H02J1/108 , G06F1/30
摘要： A power supply control device is provided with a first power supply input terminal to which a power supply is provided and a second power supply input terminal to which a power supply is provided. A power supply input detection unit detects an instance when the input of the second power supply input terminal is above a predetermined value and then a switch unit cuts off power supplied from the first power supply input terminal and activates power supply from the second power supply input terminal when the input from the second power supply input terminal is above a predetermined value according to the power supply input detection unit. A power supply processor processes a power supply supplied by way of the first or second power supply input terminal.
摘要翻译：电源控制装置设置有提供电源的第一电源输入端子和设置有电源的第二电源输入端子。电源输入检测单元检测第二电源输入端子的输入高于预定值的情况，然后开关单元切断从第一电源输入端子提供的电力，并从第二电源输入端启动电源当根据电源输入检测单元从第二电源输入端子的输入高于预定值时，端子。电源处理器处理通过第一或第二电源输入端子提供的电源。

10. 发明授权

US5930212A Positioning control system including a servo-error signal generating circuit 失效
标题翻译：定位控制系统包括伺服误差信号发生电路
公开(公告)号：US5930212A
公开(公告)日：1999-07-27
申请号：US946681
申请日：1997-10-08
申请人： Akira Minami , Shigeyoshi Tanaka , Michio Matsuura , Hiromichi Kuwano , Kazuyuki Tamanoi
发明人： Akira Minami , Shigeyoshi Tanaka , Michio Matsuura , Hiromichi Kuwano , Kazuyuki Tamanoi
IPC分类号： G11B7/09 , G11B11/105 , H03G3/30 , G11B7/095
CPC分类号： H03G3/3084 , G11B11/10576 , G11B7/0941 , G11B7/0943
摘要： A positioning control system for performing recording/reproducing operations by irradiating an optical beam to a predetermined position on an optical recording medium, includes a photo-detector and a servo-error signal generating circuit which can generate at least one servo-error signal in accordance with a difference between the detection currents. Preferably, the servo-error signal generating circuit includes at least one division circuit having two pairs of transistors, two emitters in each pair of transistors being connected together into a common emitter, bias voltages of direct current type being applied to the respective bases of transistors on one side, the respective collectors of the transistors on one side being connected to a common connecting portion via resistors, the common connecting portion being connected to a power supply, the respective bases of transistors on the other side being connected together into a common base; and an integrating capacitor which is connected to the common base of transistors on the other side, and which integrates a difference between the current flowing through the common connecting portion and the reference current, to apply the thus integrated difference to the common base of transistors on the other side.
摘要翻译：一种用于通过将光束照射到光学记录介质上的预定位置来执行记录/再现操作的定位控制系统包括光电检测器和伺服误差信号发生电路，该电路可以根据产生至少一个伺服误差信号检测电流之间有差异。优选地，伺服误差信号发生电路包括至少一个具有两对晶体管的分频电路，每对晶体管中的两个发射极连接在一起成共同的发射极，直流型偏置电压施加到晶体管的各个基极一方面，一侧的晶体管的集电极通过电阻器连接到公共连接部分，公共连接部分连接到电源，另一侧的晶体管的各个基极连接在一起成共同的基极 ; 以及积分电容器，其连接到另一侧的晶体管的公共基极，并且将流过公共连接部分的电流与参考电流之间的差积分，以将这样的积分差施加到晶体管的公共基极上另一边。

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