公开(公告)号：US5007038A

公开(公告)日：1991-04-09

申请号：US226722

申请日：1988-08-01

申请人： Kazuhiko Nakane ,  Teruo Furukawa ,  Masayoshi Shimamoto ,  Kyosuke Yoshimoto

发明人： Kazuhiko Nakane ,  Teruo Furukawa ,  Masayoshi Shimamoto ,  Kyosuke Yoshimoto

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/0055 ,  G11B7/09 ,  G11B19/04

CPC分类号： G11B7/0941 ,  G11B19/04

摘要： When recording, reproducing or erasing data signal by illuminating a recording medium surface with a condensed light spot, a tracking sensor signal or a focusing sensor signal is detected from light reflected from the recording medium surface. The detected signal is subjected to current-to-voltage conversion, and the current-to-voltage conversion gain is switched by estimating reflected light power from the recording medium surface.

摘要翻译： 当通过用聚光点照射记录介质表面来记录，再现或擦除数据信号时，从记录介质表面反射的光中检测跟踪传感器信号或聚焦传感器信号。 对所检测的信号进行电流 - 电压转换，并且通过估计来自记录介质表面的反射光功率来切换电流 - 电压转换增益。

公开(公告)号：US5438557A

公开(公告)日：1995-08-01

申请号：US217772

申请日：1994-03-24

申请人： Osamu Ito ,  Kyosuke Yoshimoto ,  Yoshihiro Kiyose ,  Kazuhiko Nakane ,  Akira Mashimo ,  Hiroyuki Onda ,  Koji Yamana ,  Takuya Nagata

发明人： Osamu Ito ,  Kyosuke Yoshimoto ,  Yoshihiro Kiyose ,  Kazuhiko Nakane ,  Akira Mashimo ,  Hiroyuki Onda ,  Koji Yamana ,  Takuya Nagata

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/00

CPC分类号： G11B7/0945

摘要： A miniaturized optical disk apparatus which performs a pull-in of a focus servo and a pull-in of a tracking servo without a position detector for detecting an optical head. If the optical head is located at a non-reflection film area and thus the focus servo cannot be performed, then the optical head is moved and the focus servo is performed again. This process is repeated until the focus servo can be achieved. In addition, if the optical head is located at a non-track area, then the optical disk is moved to a track area and then the tracking servo is performed. This process also repeated until the optical head is located over the track area. The tracking servo can be stably performed since it is performed only when the optical head is located over the track area. The present invention is applicable to the optical disk apparatus which uses a 3.5 in optical disk.

摘要翻译： 执行聚焦伺服的引入和跟踪伺服的拉入的小型化光盘装置，而没有用于检测光学头的位置检测器。 如果光头位于非反射膜区域，因此不能执行聚焦伺服，则移动光头并再次执行聚焦伺服。 重复该过程，直到可以实现聚焦伺服。 此外，如果光头位于非轨道区域，则将光盘移动到轨道区域，然后执行跟踪伺服。 该过程也重复，直到光学头位于轨道区域上方。 由于仅当光头位于轨道区域上方时才执行跟踪伺服，所以可以稳定地执行跟踪伺服。 本发明适用于在光盘中使用3.5的光盘装置。

公开(公告)号：US5107483A

公开(公告)日：1992-04-21

申请号：US231881

申请日：1988-08-12

申请人： Yoshiki Nakajima ,  Kunimaro Tanaka ,  Kyosuke Yoshimoto ,  Motomu Yoshimura ,  Mitsuo Maeda ,  Koichi Takeuchi ,  Kouichi Yamada ,  Masaharu Ogawa ,  Kazuhiko Nakane ,  Hajime Nakajima ,  Masayoshi Shimamoto ,  Fumio Matsuda ,  Minoru Ozaki

发明人： Yoshiki Nakajima ,  Kunimaro Tanaka ,  Kyosuke Yoshimoto ,  Motomu Yoshimura ,  Mitsuo Maeda ,  Koichi Takeuchi ,  Kouichi Yamada ,  Masaharu Ogawa ,  Kazuhiko Nakane ,  Hajime Nakajima ,  Masayoshi Shimamoto ,  Fumio Matsuda ,  Minoru Ozaki

IPC分类号： G11B7/0045 ,  G11B7/125 ,  G11B7/24

CPC分类号： G11B7/126 ,  G11B7/00453 ,  G11B7/24

摘要： An apparatus in accordance with the present invention sequentially fixes the wavelength of a light beam irradiated from a light source whose oscillation wavelength sequentially varies to a plurality of different wavelengths to a recording medium to required wavelengths each capable of forming a hole at absorption spectrum of the recording medium, synchronizes timing of change of the wavelength of the light source with timing of recording or regenerating each bit of information, records the optical hole formed in a manner that each bit of information corresponds to the wavelength varying in sequence, and detects the formed hole to regenerate information. Furthermore, the holes formed by the same wavelength are recorded at the positions separated by a distance capable of avoiding interference, while the holes formed by different wavelengths in correspondence to each bit of information are recorded at nearly the same position while that position is slightly displaced at a time, and thereby information is multiple-recorded with high density.

摘要翻译： 根据本发明的装置将从振荡波长依次变化的光源照射到多个不同波长的光束的波长的顺序地固定到记录介质上，每个波长能够在吸收光谱上形成孔 记录介质，使光源的波长的变化的定时与记录或再生每个信息位的定时同步，以使每个位的信息顺序对应于波长变化的方式记录形成的光孔，并检测形成的 孔重新生成信息。 此外，由相同波长形成的孔被记录在以避免干扰的距离分开的位置处，而与每个信息位对应的不同波长形成的孔被记录在几乎相同的位置，同时该位置稍微位移 同时，信息以高密度多重记录。

公开(公告)号：US5117412A

公开(公告)日：1992-05-26

申请号：US526285

申请日：1990-05-21

申请人： Osamu Ito ,  Masaharu Ogawa ,  Kyosuke Yoshimoto ,  Kunimaro Tanaka ,  Teruo Furukawa ,  Yoshiki Nakajima

发明人： Osamu Ito ,  Masaharu Ogawa ,  Kyosuke Yoshimoto ,  Kunimaro Tanaka ,  Teruo Furukawa ,  Yoshiki Nakajima

IPC分类号： G11B7/007 ,  G11B7/013 ,  G11B7/085 ,  G11B19/04 ,  G11B19/20 ,  G11B27/30

CPC分类号： G11B19/20 ,  G11B19/04 ,  G11B27/3027 ,  G11B7/00745 ,  G11B7/08529 ,  G11B7/0857 ,  G11B7/24085

摘要： An optical disc having a plurality of information tracks. Each information track having a data field including multiple data bytes and a servo field including a first servo byte having a pair of wobbled pits and a second servo byte having a clock pit. The byte length of at least one of the first or second servo bytes being longer than the byte lengths of the data bytes. The increased byte length providing for greater distance between the wobbled pits and the clock pit resulting in increased reliability in clock pit detection. An accessing apparatus for accessing such an optical disc including a phase-locked loop circuit with a frequency dividing ratio that varies in accordance with the various byte lengths.

公开(公告)号：US5063546A

公开(公告)日：1991-11-05

申请号：US166671

申请日：1988-03-11

申请人： Osamu Ito ,  Masaharu Ogawa ,  Kyosuke Yoshimoto ,  Kunimaro Tanaka ,  Teruo Furukawa ,  Yoshiki Nakajima

发明人： Osamu Ito ,  Masaharu Ogawa ,  Kyosuke Yoshimoto ,  Kunimaro Tanaka ,  Teruo Furukawa ,  Yoshiki Nakajima

IPC分类号： G11B7/007 ,  G11B7/013 ,  G11B7/085 ,  G11B19/04 ,  G11B19/20 ,  G11B27/30

CPC分类号： G11B19/20 ,  G11B19/04 ,  G11B27/3027 ,  G11B7/00745 ,  G11B7/08529 ,  G11B7/0857 ,  G11B7/24085

摘要： An optical disc having a plurality of information tracks, each information track having a servo field including a pair of wobbled pits and the clock pit. The distance between one of the wobbled pits and the clock pit in each servo field is selected so that the optical disc includes at least three different types of servo field. These different types of servo field appear in a predetermined sequence for every one or more contiguous information tracks. A transducing apparatus for tranducing such an optical disc has a direction detecting circuit for detecting the moving velocity of a movable portion of an optical head, and a speed detecting circuit for detecting the relative velocity of the movable portion.

摘要翻译： 具有多个信息轨道的光盘，​​每个信息轨迹具有包括一对摆动凹坑和时钟凹坑的伺服场。 选择每个伺服磁场中的摆动凹坑之一和时钟凹坑之间的距离，使得光盘包括至少三种不同类型的伺服磁场。 对于每一个或多个连续的信息轨迹，这些不同类型的伺服字段以预定的顺序出现。 用于变换这种光盘的转换装置具有用于检测光学头的可移动部分的移动速度的方向检测电路和用于检测可动部分的相对速度的速度检测电路。

公开(公告)号：US5265077A

公开(公告)日：1993-11-23

申请号：US728631

申请日：1991-07-11

申请人： Kyosuke Yoshimoto ,  Teruo Furukawa ,  Minoru Ozaki ,  Akira Mashimo ,  Hiroyuki Onda

发明人： Kyosuke Yoshimoto ,  Teruo Furukawa ,  Minoru Ozaki ,  Akira Mashimo ,  Hiroyuki Onda

IPC分类号： G11B7/085 ,  G11B7/00

CPC分类号： G11B7/08505

摘要： In an optical disk storage, the seek of an optical head is controlled so that the number of seek times cannot exceed a threshold number of times in a predetermined period or an accumulated seek period cannot exceed a threshold period in a predetermined period. Therefore, a wasteful power consumption and a rise in the internal temperature associated with the seek activity can be effectively prevented.

摘要翻译： 在光盘存储器中，控制光头的寻道使得寻找时间的数量不能超过预定时间段的阈值次数，或者累积寻道周期在预定时间段内不能超过阈值周期。 因此，可以有效地防止与寻找活动相关的浪费的功率消耗和内部温度的上升。

公开(公告)号：US5128916A

公开(公告)日：1992-07-07

申请号：US526584

申请日：1990-05-21

申请人： Osamu Ito ,  Masaharu Ogawa ,  Kyosuke Yoshimoto ,  Kunimaro Tanaka ,  Teruo Furukawa ,  Yoshiki Nakajima

发明人： Osamu Ito ,  Masaharu Ogawa ,  Kyosuke Yoshimoto ,  Kunimaro Tanaka ,  Teruo Furukawa ,  Yoshiki Nakajima

IPC分类号： G11B7/007 ,  G11B7/013 ,  G11B7/085 ,  G11B19/04 ,  G11B19/20 ,  G11B27/30

CPC分类号： G11B19/20 ,  G11B19/04 ,  G11B27/3027 ,  G11B7/00745 ,  G11B7/08529 ,  G11B7/0857 ,  G11B7/24085

摘要： An optical disc having a plurality of information tracks, each information track having a servo field including a pair of wobbled pits and a clock pit. The distance between one of the wobbled pits and the clock pit in each servo field is selected such that the optical disc includes at least three different types of servo field. These differnt types of servo field appear in a predetermined sequence for every one or more contiguous information tracks. A driving apparatus for driving such an optical disc has a direction detecting circuit for detecting the moving velocity of a movable portion of an optical head, and a speed detecting circuit for detecting the relative velocity of the movable portion.

摘要翻译： 具有多个信息轨道的光盘，​​每个信息轨道具有包括一对摆动凹坑和时钟凹坑的伺服场。 选择每个伺服字段中的摆动凹坑之一和时钟凹坑之间的距离，使得光盘包括至少三种不同类型的伺服字段。 对于每一个或多个连续的信息轨道，这些不同类型的伺服字段以预定的顺序出现。 用于驱动这种光盘的驱动装置具有用于检测光学头的可移动部分的移动速度的方向检测电路和用于检测可动部分的相对速度的速度检测电路。

公开(公告)号：US5481517A

公开(公告)日：1996-01-02

申请号：US93440

申请日：1993-07-16

申请人： Kyosuke Yoshimoto ,  Yoshiki Nakajima ,  Kimiyuki Koyanagi ,  Osamu Ito ,  Akira Mashimo ,  Hiroyuki Onda ,  Yutaka Kobayashi ,  Koji Yamana

发明人： Kyosuke Yoshimoto ,  Yoshiki Nakajima ,  Kimiyuki Koyanagi ,  Osamu Ito ,  Akira Mashimo ,  Hiroyuki Onda ,  Yutaka Kobayashi ,  Koji Yamana

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

CPC分类号： G11B7/08517

摘要： The disk drive apparatus of the present invention has an optical pickup that jumps a track to perform track jumping when a jumping voltage is impressed, and that traces a track by performing brake operation when a braking voltage is applied, and actuator that drives the optical pickup, a signal processing part that performs focus and tracking control with respect to the optical pickup, a movement time measurement part that measures the movement time when a light beam emitted from the optical pickup is moved to cross a track to a required track, a voltage control part that uses the results of measurement to generate parameters and a voltage value that is applied to the actuator, a storage part that stores voltage value that is generated by the voltage value setting part, and that after a disk is loaded, first stores data of that disk in the storage part and uses those data values according to the track jump operation.

摘要翻译： 本发明的磁盘驱动装置具有跳跃轨道的光拾取器，当施加跳跃电压时进行轨道跳跃，并且当施加制动电压时通过执行制动操作来跟踪轨道，以及驱动光学拾取器的致动器 执行相对于光学拾取器的聚焦和跟踪控制的信号处理部件，测量从光学拾取器发射的光束移动到所需轨道的轨迹的移动时间的移动时间测量部件，电压 使用测量结果的控制部件生成参数和施加到致动器的电压值，存储部分，其存储由电压值设定部分产生的电压值，以及在盘装载之后首先存储数据 并且根据轨道跳转操作使用那些数据值。

公开(公告)号：US5197048A

公开(公告)日：1993-03-23

申请号：US770602

申请日：1991-10-03

申请人： Kyosuke Yoshimoto ,  Osamu Ito ,  Kunimaro Tanaka ,  Koichi Takeuchi ,  Isao Watanabe ,  Kazuhiko Tsutsumi

发明人： Kyosuke Yoshimoto ,  Osamu Ito ,  Kunimaro Tanaka ,  Koichi Takeuchi ,  Isao Watanabe ,  Kazuhiko Tsutsumi

IPC分类号： G11B13/04

CPC分类号： G11B13/04

摘要： A magneto-optic recording medium has a cartridge provided with a magnetization direction indicating portion for indicating the direction of magnetization of a second magnetic layer. Alternatively, the direction of magnetization of the second magnetic layer is recorded in advance in the first magnetic layer. The direction of magnetization of the second magnetic layer indicated or recorded is detected and recognized. A magnetic field oriented in an opposite direction to the direction of magnetization detected is imparted to the magneto-optic recording medium. Alternatively, predetermined information is recorded in the first magnetic layer, the direction of magnetization of the second magnetic layer is detected on the basis of a signal reproducing that information, and the direction of a magnetic field to be applied to the magneto-optic recording medium is set on the basis of the direction of magnetization thus detected. In addition, the direction of the magnetic field to be applied to the magneto-optic recording medium is set and the output of a light beam is changed on the basis of the direction of the second magnetic layer detected.

摘要翻译： 磁光记录介质具有带有用于指示第二磁性层的磁化方向的磁化方向指示部的盒。 或者，第二磁性层的磁化方向预先记录在第一磁性层中。 检测并识别表示或记录的第二磁性层的磁化方向。 向磁光记录介质赋予与所检测的磁化方向相反的方向取向的磁场。 或者，预定信息被记录在第一磁性层中，基于再现该信息的信号和施加到磁​​光记录介质的磁场的方向来检测第二磁性层的磁化方向 基于这样检测的磁化方向设定。 此外，设置施加到磁光记录介质的磁场的方向，并且基于检测到的第二磁性层的方向改变光束的输出。

公开(公告)号：US06968357B2

公开(公告)日：2005-11-22

申请号：US09840053

申请日：2001-04-24

申请人： Kyosuke Yoshimoto ,  Kazuo Hirasawa ,  Nobuo Terazaki ,  Tatsunori Aizaki

发明人： Kyosuke Yoshimoto ,  Kazuo Hirasawa ,  Nobuo Terazaki ,  Tatsunori Aizaki

IPC分类号： G06F13/00 ,  G06F21/20 ,  H04L12/26 ,  G06F15/16

CPC分类号： H04L43/0817

摘要： An information collecting system includes at least one terminal and an application server. The application server includes a receiving section for receiving input information transmitted from the terminal to the information processing center via the network; an information processing section for deciding as to the information received, and for constructing a picture to be displayed on the terminal in response to a decision result; and a transmitting section for transmitting the picture generated by the information processing section to the terminal. The application server further comprises a differential detector for detecting a difference between the client display picture stored in a storage and a client display picture newly generated by a client display screen constructor, wherein said transmitting section transmits only differential information detected by said differential detector to said terminal.

摘要翻译： 信息收集系统包括至少一个终端和应用服务器。 应用服务器包括接收部分，用于经由网络接收从终端发送到信息处理中心的输入信息; 信息处理部分，用于响应于决定结果来决定接收到的信息，以及用于构造要在终端上显示的图像; 以及发送部，用于将由信息处理部生成的图像发送到终端。 应用服务器还包括差分检测器，用于检测存储在存储器中的客户端显示画面与由客户端显示画面构造器新生成的客户端显示画面之间的差异，其中所述发送部分仅将由所述差分检测器检测到的差分信息发送到所述 终奌站。