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11 条记录 (耗时 0.02 秒)

    Gain control device for servo control
    2.
    发明授权
    Gain control device for servo control 失效
    用于伺服控制的增益控制装置

    公开(公告)号：US5886963A

    公开(公告)日：1999-03-23

    申请号：US995274

    申请日：1997-12-19

    申请人： Hiroyuki Abe ,  Kazuhiro Kiyoura ,  Yoshifumi Fujino ,  Koichiro Haraguchi ,  Kazushige Kawana ,  Takehiro Takada ,  Seiji Kato

    发明人： Hiroyuki Abe ,  Kazuhiro Kiyoura ,  Yoshifumi Fujino ,  Koichiro Haraguchi ,  Kazushige Kawana ,  Takehiro Takada ,  Seiji Kato

    IPC分类号： G11B7/09 ,  G11B7/095

    CPC分类号： G11B7/0945 ,  G11B7/0941 ,  G11B7/0953

    摘要： An automatic gain control device includes: reading unit for reading information signal from a recording medium; servo loop including servo control unit for controlling position of the reading unit with respect to the recording medium; mixing unit for mixing a disturbance signal into the servo loop; gain control unit detecting gain of the servo loop in accordance with level of the disturbance signal and varying the gain of the servo loop; and level detecting unit for discriminating whether level of the information signal read by the reading unit is higher than a predetermined level or not, wherein the mixing unit mixes the disturbance signal into the servo loop when the level of the information signal is higher than the predetermined level.

    摘要翻译： 一种自动增益控制装置，包括：读取单元，用于从记录介质读取信息信号; 伺服回路，包括用于控制读取单元相对于记录介质的位置的伺服控制单元; 混合单元，用于将扰动信号混合到伺服回路中; 增益控制单元根据干扰信号的电平检测伺服环路的增益并改变伺服环路的增益; 以及电平检测单元，用于鉴别由读取单元读取的信息信号的电平是否高于预定电平，其中当信息信号的电平高于预定电平时，混合单元将干扰信号混合到伺服环路中 水平。

    Auto-loading disk player
    4.
    发明授权
    Auto-loading disk player 失效
    自动加载磁盘播放器

    公开(公告)号：US06243347B1

    公开(公告)日：2001-06-05

    申请号：US08658120

    申请日：1996-06-04

    申请人： Kazushige Kawana ,  Seiji Kato ,  Toshiyuki Fukami ,  Takehiro Takada

    发明人： Kazushige Kawana ,  Seiji Kato ,  Toshiyuki Fukami ,  Takehiro Takada

    IPC分类号： G11B3310

    CPC分类号： G11B17/051 ,  G11B17/0405 ,  G11B33/10

    摘要： An auto-loading system of disk playback apparatus includes a door open/close detecting device for detecting that a door is being closed when a disk is being ejected, and loads the disk into the disk playback apparatus by the detection signal therefrom. According to another aspect, the apparatus generates an alarm immediately when detection is made thereby that the door is being closed when the disk is being ejected.

    摘要翻译： 盘重放装置的自动装载系统包括门打开/关闭检测装置，用于当盘被弹出时检测门被关闭，并通过其检测信号将盘装入盘重放装置。 根据另一方面，当检测到当盘被弹出时门被关闭时，该装置立即产生报警。

    Focus jump control apparatus of a player for multilayer recording disc
    5.
    发明授权
    Focus jump control apparatus of a player for multilayer recording disc 失效
    用于多层记录盘的播放器的焦点跳跃控制装置

    公开(公告)号：US06151280A

    公开(公告)日：2000-11-21

    申请号：US105269

    申请日：1998-06-26

    申请人： Shinichi Naohara ,  Takashi Suzuki ,  Alex Bradshaw ,  Motoi Kimura ,  Norio Matsuda ,  Kazushige Kawana ,  Kenichi Takahashi

    发明人： Shinichi Naohara ,  Takashi Suzuki ,  Alex Bradshaw ,  Motoi Kimura ,  Norio Matsuda ,  Kazushige Kawana ,  Kenichi Takahashi

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

    CPC分类号： G11B7/08511 ,  G11B2007/0013 ,  G11B7/0945

    摘要： A focus jump control apparatus of a player for playing a multilayer recording disc surely achieves a focus jump. This apparatus includes: a focusing servo loop for allowing a focal point to trace a recording surface in accordance with a focusing error signal by using a focusing actuator to displace the focal point of read light to a disc in the optical axial direction; and a tracking servo loop for allowing the focal point to trace disc tracks. A loop opening/closing control unit opens/closes focusing/tracking servo loops in response to an instruction and closes the focusing servo loop when the movement of the focal point from one of the recording surfaces to the other. During the movement of the read light focal point, the closing state of the tracking servo loop is maintained. Jump driving means generates a drive signal of the actuator to move the focal point from one of the recording surfaces to the other based on the error signal under the opening/closing control of the focusing/tracking servo loops.

    摘要翻译： 用于播放多层记录盘的播放器的焦点跳跃控制装置确实实现了聚焦跳跃。 该装置包括：聚焦伺服环，用于通过使用聚焦致动器将读取光的焦点在光轴方向上移位到光盘，根据聚焦误差信号使焦点跟踪记录表面; 以及用于允许焦点跟踪盘轨迹的跟踪伺服环路。 环路打开/关闭控制单元响应于指令打开/关闭聚焦/跟踪伺服环路，并且当焦点从记录表面之一移动到另一个时闭合聚焦伺服环路。 在读取光焦点的运动期间，维持跟踪伺服环路的关闭状态。 跳转驱动装置根据在聚焦/跟踪伺服环路的打开/关闭控制下的误差信号产生致动器的驱动信号，以将焦点从记录表面之一移动到另一记录表面。

    Focus control apparatus
    6.
    发明授权
    Focus control apparatus 失效
    对焦控制装置

    公开(公告)号：US06091680A

    公开(公告)日：2000-07-18

    申请号：US102250

    申请日：1998-06-22

    申请人： Norio Matsuda ,  Takashi Suzuki ,  Kazushige Kawana ,  Hitoshi Yamazaki ,  Yuichi Kimikawa ,  Masakazu Takahashi ,  Kenichi Takahashi

    发明人： Norio Matsuda ,  Takashi Suzuki ,  Kazushige Kawana ,  Hitoshi Yamazaki ,  Yuichi Kimikawa ,  Masakazu Takahashi ,  Kenichi Takahashi

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

    CPC分类号： G11B7/08511 ,  G11B7/0945 ,  G11B2007/0013 ,  G11B7/0908

    摘要： Disclosed is a focus control apparatus of the present invention capable of successfully performing an accurate focus jump operation without an erroneous operation of a focus actuator. The apparatus irradiates a light beam onto a recording medium, and generates a focus actuator drive signal for moving an optimized light convergence point of the light beam from one recording surface to the other, based on a focus error signal generated based on a returned light from the recording medium. The focus control apparatus comprises a detector for detecting that the focus error signal crosses a predetermined level as a specified level crossing; instruction means for generating a focus jump instruction; a drive signal generating means for generating the drive signal in response to the focus jump instruction and receiving a detection output from the detection circuit to recognize a timing of a specified level crossing of the focus error signal upon receipt of the detection output, thereby extinguishing the drive signal at the timing of the specified level crossing detection timing; and inhibiting means for inhibiting the recognition of the specified level crossing by the drive signal generating section for a predetermined period in response to the focus jump instruction.

    摘要翻译： 公开了一种本发明的聚焦控制装置，其能够成功地执行精确的聚焦跳跃操作，而不会导致聚焦致动器的错误操作。 该装置将光束照射到记录介质上，并且基于基于从来自第一记录表面的返回光产生的聚焦误差信号，生成聚焦致动器驱动信号，用于将光束的优化光会聚点从一个记录表面移动到另一个记录表面 记录介质。 聚焦控制装置包括检测器，用于检测聚焦误差信号作为指定的电平交叉与预定电平相交; 用于产生聚焦跳转指令的指令装置; 驱动信号发生装置，用于响应于聚焦跳转指令产生驱动信号，并且在接收到检测输出时接收来自检测电路的检测输出，以识别聚焦误差信号的指定电平交叉的定时，由此熄灭 在指定的电平交叉检测定时的定时处的驱动信号; 以及禁止装置，用于响应于聚焦跳转指令，禁止由驱动信号产生部分预定时间段的指定电平交叉的识别。

    Focus control apparatus for multilayer optical recording medium
    9.
    发明授权
    Focus control apparatus for multilayer optical recording medium 失效
    用于多层光记录介质的聚焦控制装置

    公开(公告)号：US06147942A

    公开(公告)日：2000-11-14

    申请号：US112004

    申请日：1998-07-08

    申请人： Hiroyuki Abe ,  Takeshi Sato ,  Kazushige Kawana ,  Hideaki Watarihana ,  Shinichi Naohara ,  Motoi Kimura ,  Yuichi Kimikawa ,  Masakazu Takahashi

    发明人： Hiroyuki Abe ,  Takeshi Sato ,  Kazushige Kawana ,  Hideaki Watarihana ,  Shinichi Naohara ,  Motoi Kimura ,  Yuichi Kimikawa ,  Masakazu Takahashi

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

    CPC分类号： G11B7/08511 ,  G11B2007/0013 ,  G11B7/08529 ,  G11B7/0945

    摘要： A focus control apparatus for a multilayer optical recording medium which performs an appropriate focus jump on a multilayer optical recording medium. This focus control apparatus implements such focus jump control as to temporarily release a focus servo on one layer of a loaded multilayer optical recording medium, shift the focus position of read light on another target layer and then restart the focus servo on the another target layer, detects an ambient temperature, sets a drive signal condition according to the temperature detection output, and moves the focus position of the read light under the set drive signal condition. Specifically, this apparatus generates an acceleration signal to start moving the focus position of read light and a deceleration signal to decelerate movement of the focus position of the read light, as drive signals for a focus actuator in order to execute a focus jump operation, detects an ambient temperature of the focus actuator, and sets signal conditions for the acceleration signal and the deceleration signal according to the detected temperature.

    摘要翻译： 一种用于在多层光学记录介质上执行适当的聚焦跳跃的多层光学记录介质的聚焦控制装置。 该聚焦控制装置实现这样的聚焦跳跃控制，以暂时释放加载的多层光记录介质的一层上的聚焦伺服，将读取光的聚焦位置移动到另一目标层上，然后在另一目标层上重新启动聚焦伺服， 检测环境温度，根据温度检测输出设定驱动信号状态，并在设定的驱动信号条件下移动读取光的聚焦位置。 具体地，该装置产生加速度信号，开始移动读取光的聚焦位置和减速信号，以减慢读取光的焦点位置的移动，作为聚焦致动器的驱动信号，以执行聚焦跳跃操作，检测 聚焦致动器的环境温度，并且根据检测到的温度设置用于加速度信号和减速信号的信号条件。

    Focus control apparatus for multilayer optical recording medium
    10.
    发明授权
    Focus control apparatus for multilayer optical recording medium 失效
    用于多层光记录介质的聚焦控制装置

    公开(公告)号：US06246646B1

    公开(公告)日：2001-06-12

    申请号：US09114880

    申请日：1998-07-14

    申请人： Hiroyuki Abe ,  Shinichi Naohara ,  Takeshi Sato ,  Alex Bradshaw ,  Kazushige Kawana ,  Hideaki Watarihana ,  Norio Matsuda ,  Kenichi Takahashi

    发明人： Hiroyuki Abe ,  Shinichi Naohara ,  Takeshi Sato ,  Alex Bradshaw ,  Kazushige Kawana ,  Hideaki Watarihana ,  Norio Matsuda ,  Kenichi Takahashi

    IPC分类号： G11B709

    CPC分类号： G11B7/08511 ,  G11B7/0948 ,  G11B2007/0013

    摘要： A focus control apparatus for a multilayer optical recording medium performs an adequate focus jump on a multilayer optical recording medium. Threshold values are set according to the amount of a level change in a focus error signal of a loaded multilayer optical recording medium, and focus jump control is conducted based on the result of comparison between the level of the focus error signal and the set threshold values. Positive and negative threshold values to be compared with the level of the focus error signal to detect a zero-crossing point of the focus error signal are set in accordance with the amount of a level change in the focus error signal, after which an acceleration operation of the focus actuator is started in response to a focus jump instruction to shift the focus position of read light for a focus jump, the acceleration operation is stopped in accordance with zero-crossing detection, a deceleration operation of the focus actuator is started thereafter and is stopped in accordance with zero-crossing detection, so that the operation returns to the focus servo operation.

    摘要翻译： 用于多层光学记录介质的聚焦控制装置在多层光学记录介质上执行适当的聚焦跳跃。 根据加载的多层光学记录介质的聚焦误差信号中的电平变化量设定阈值，并且基于聚焦误差信号的电平与设定的阈值之间的比较结果进行聚焦跳跃控制 。 根据聚焦误差信号的电平变化量，设定要与聚焦误差信号的电平进行比较以检测聚焦误差信号的过零点的正和负阈值，然后加速操作 响应于聚焦跳转指令开始移动聚焦跳跃的读取光的焦点位置，根据过零检测停止加速操作，此后开始聚焦致动器的减速操作，并且 根据过零检测停止，使得操作返回到聚焦伺服操作。