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1. 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。

2. 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。

3. 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。

4. 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。

5. 发明授权

US5636191A Positioning control system utilizing optical beam having servo-error signal generating circuit 失效
标题翻译：利用具有伺服误差信号发生电路的光束的定位控制系统
公开(公告)号：US5636191A
公开(公告)日：1997-06-03
申请号：US421226
申请日：1995-04-13
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 predertermined 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先定位的位置进行记录/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。

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