公开(公告)号：US08264923B2

公开(公告)日：2012-09-11

申请号：US12783063

申请日：2010-05-19

申请人： Mai Narita

发明人： Mai Narita

IPC分类号： G11B7/00

CPC分类号： G11B7/13927 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0946

摘要： An optical disc device including: a light source; an object lens to focus light emitted from the light source on an information recording surface of an optical disc; a movable lens that is arranged on an optical path between the light source and the objective lens and arranged such that position thereof is adjustable along a direction of a light axis; a lens moving portion to move the movable lens along the direction of the light axis; a tracking servo system which makes a beam spot that is formed of the light from the light source through focusing by the objective lens keep on track of the optical disc; and a control part which controls gain of a servo loop of the tracking servo system is made temporarily larger when the movable lens is moved by the lens moving portion in comparison with a case where moving of the movable lens by the lens moving portion is not performed.

摘要翻译： 一种光盘装置，包括：光源; 将从光源发射的光聚焦在光盘的信息记录表面上的物镜; 可移动透镜，其布置在光源和物镜之间的光路上并且布置成使得其位置沿着光轴的方向可调节; 透镜移动部分，用于沿着所述光轴的方向移动所述可移动透镜; 跟踪伺服系统，其使得由来自光源的光通过物镜聚焦形成的束斑保持在光盘的轨迹上; 与通过透镜移动部移动可移动透镜的情况相比，当透镜移动部移动可移动透镜时，控制跟踪伺服系统的伺服环路的增益的控制部分暂时变大 。

公开(公告)号：US08179753B2

公开(公告)日：2012-05-15

申请号：US12301188

申请日：2007-05-17

申请人： Masashi Kubota ,  Hisaya Niizawa

发明人： Masashi Kubota ,  Hisaya Niizawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0946 ,  G11B7/0908

摘要： A position-error-signal calculation circuit (105) calculates a relative position error between a laser-focused-beam spot (103) and an information recording layer (102), and generates a focus error signal (106). A filter (108) amplifies and passes therethrough a signal component in the vicinity of the natural resonance frequency of at least one mode among the natural vibration modes of the optical disc medium (101). A drive amplifier receives through a stabilizing compensator (109) and a D/A converter (110) the focus error signal (106) passed by the filter (108), to drive an objective lens (113), thereby allowing the laser-focused-beam spot (103) to track the information recording layer (102).

摘要翻译： 位置误差信号计算电路（105）计算激光聚焦光点（103）和信息记录层（102）之间的相对位置误差，并产生聚焦误差信号（106）。 滤光器（108）在光盘介质（101）的固有振动模式中，在至少一种模式的固有共振频率附近放大并通过其中的信号分量。 驱动放大器通过稳定补偿器（109）和D / A转换器（110）接收由过滤器（108）通过的聚焦误差信号（106），以驱动物镜（113），从而允许激光聚焦 - 光束（103）以跟踪信息记录层（102）。

公开(公告)号：US20120060174A1

公开(公告)日：2012-03-08

申请号：US13292704

申请日：2011-11-09

申请人： Nobuaki Onagi ,  Yasutomo Aman ,  Minoru Takahashi ,  Haruki Tokumaru ,  Yoshimichi Takano ,  Daiichi Koide

发明人： Nobuaki Onagi ,  Yasutomo Aman ,  Minoru Takahashi ,  Haruki Tokumaru ,  Yoshimichi Takano ,  Daiichi Koide

IPC分类号： G11B19/28 ,  G11B17/03

CPC分类号： G11B7/0946 ,  G11B7/0945 ,  G11B19/28 ,  G11B33/08 ,  G11B33/12 ,  G11B33/148

摘要： A recording/reproducing apparatus is disclosed that includes a spindle motor unit including a spindle on which a flexible recording disk is placed, a stabilizer plate disposed so as to face the recording disk, a torque detection unit configured to detect a drive torque applied to the spindle motor unit, an adjustment unit configured to adjust a gap between the recording disk and the stabilizer plate, and a determination unit configured to determine an optimal gap to be set to the gap based on the drive torque detected by the torque detection unit, in which the adjustment unit sets the optimum gap determined by the determination unit to the gap.

摘要翻译： 公开了一种记录/再现装置，其包括：主轴电动机单元，其包括其上放置有柔性记录盘的主轴;与所述记录盘相对设置的稳定板;扭矩检测单元，被配置为检测施加到所述主轴的驱动转矩; 主轴电动机单元，配置成调整记录盘和稳定板之间的间隙的调节单元，以及确定单元，其被配置为基于由转矩检测单元检测的驱动转矩来确定要设置到间隙的最佳间隙， 调整单元将由确定单元确定的最佳间隙设置为间隙。

公开(公告)号：US08059501B2

公开(公告)日：2011-11-15

申请号：US12141688

申请日：2008-06-18

申请人： Johannes Leopoldus Bakx ,  Antoon Dekker ,  Maarten Kuijper ,  Tony P. van Endert

发明人： Johannes Leopoldus Bakx ,  Antoon Dekker ,  Maarten Kuijper ,  Tony P. van Endert

IPC分类号： G11B7/00

CPC分类号： G11B7/0953 ,  G11B7/0946 ,  G11B7/0956

摘要： An optical disk drive and a method for scanning an optical disk that includes a substantially circular track with a scanning velocity is provided. A servo control signal (SCS) is determined based on a servo error signal (SES). A first performance indicator (IND1) of the servo actuator is determined from at least one of the SES and SCS. IND1 is compared against a first pre-determined threshold (ITHR1), determining a first servo margin (MAR1). The scanning velocity is set in dependence on at least MAR1. In particular, scanning velocity is reduced when the first performance indicator exceeds the first pre-determined threshold. Additionally or alternatively, a bandwidth of control of the servo actuator can be adjusted in dependence on at least one of a second servo margin, determined from at least one of SES and SCS, and a third servo margin, associated with a mark quality determined from a central aperture signal.

摘要翻译： 提供了一种光盘驱动器和用于扫描包括具有扫描速度的大致圆形轨道的光盘的方法。 基于伺服误差信号（SES）来确定伺服控制信号（SCS）。 从SES和SCS中的至少一个确定伺服致动器的第一性能指示器（IND1）。 将IND1与第一预定阈值（ITHR1）进行比较，确定第一伺服余量（MAR1）。 扫描速度根据至少MAR1设定。 特别地，当第一性能指标超过第一预定阈值时，扫描速度降低。 附加地或替代地，伺服致动器的控制带宽可以根据从SES和SCS中的至少一个确定的第二伺服余量和第三伺服余量中的至少一个来调节，第三伺服余量与由 中心孔径信号。

公开(公告)号：US07990824B2

公开(公告)日：2011-08-02

申请号：US12551696

申请日：2009-09-01

申请人： Jin-Yi Wu ,  Jui-Cheng Lee

发明人： Jin-Yi Wu ,  Jui-Cheng Lee

IPC分类号： G11B7/00

CPC分类号： G11B7/0946 ,  G11B20/1816 ,  G11B2220/2537

摘要： A method for distinguishing unbalanced disc in an optical disc reproducing/recording apparatus, comprising following steps: moving an optical pickup head to a first position of an optical disc; rotating the optical disc to a predetermined rotating speed; transferring a focus error signal produced by the optical pickup head to a focus control voltage signal; controlling the optical pickup head by the focus control voltage signal to maintain a focus light spot produced by the optical pickup head on the optical disc; and distinguishing if the optical disc is an unbalanced disc according to the focus control voltage signal.

摘要翻译： 一种用于区分光盘再现/记录装置中的不平衡盘的方法，包括以下步骤：将光学拾取头移动到光盘的第一位置; 将光盘旋转到预定的转速; 将由所述光学拾取头产生的聚焦误差信号传送到聚焦控制电压信号; 通过聚焦控制电压信号控制光学拾取头，以将由光学拾取头产生的聚焦光点保持在光盘上; 并根据聚焦控制电压信号区分光盘是不平衡盘。

公开(公告)号：US07916611B2

公开(公告)日：2011-03-29

申请号：US12171973

申请日：2008-07-11

申请人： Takaaki Furuya

发明人： Takaaki Furuya

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0946

摘要： A light blocking unit includes a plate-like member which is different from a housing member, and a light blocking portion formed on the plate-like member, for blocking light. A light detector has a light receiving portion for receiving light which is partitioned into four divided regions, by a Y-axis-wise parting line and an X-axis-wise parting line in X-Y coordinates, and outputs photoelectric output signals for the respective divided regions in accordance with intensity of the light received by the respective divided regions of the light receiving portion. Of light beams emitted from a polarization beam splitter, a part of the light beams are blocked by the light blocking unit while the other part of the light beams are not blocked and thus emitted to the light detector excluding a region defined by two sides parallel to the parting lines.

摘要翻译： 遮光单元包括与壳体构件不同的板状构件和形成在板状构件上的用于遮挡光的遮光部。 光检测器具有用于接收在XY坐标中由Y轴分割线和X轴分割线划分成四个分割区域的光的光接收部分，并且输出用于各个分割的光电输出信号 根据由光接收部分的相应分割区域接收的光的强度。 从偏振分束器发射的光束中，一部分光束被遮光单元阻挡，而另一部分光束不被阻挡，因此发射到光检测器，不包括平行于 分型线。

公开(公告)号：US07916593B2

公开(公告)日：2011-03-29

申请号：US11064222

申请日：2005-02-23

申请人： Norio Tanaka ,  Takashi Nagatomo ,  Akio Terada ,  Yuichi Suzuki

发明人： Norio Tanaka ,  Takashi Nagatomo ,  Akio Terada ,  Yuichi Suzuki

IPC分类号： G11B20/18

CPC分类号： G11B20/1258 ,  G11B7/0946 ,  G11B19/04 ,  G11B19/26 ,  G11B20/18 ,  G11B20/1883 ,  G11B2020/1267 ,  G11B2020/1287 ,  G11B2020/1294 ,  G11B2020/183 ,  G11B2220/20 ,  G11B2220/2537 ,  G11B2220/2541 ,  G11B2220/2562

摘要： An optical disk device capable of increasing access speed and an image pickup device having such an optical disk device. In a region at the inside of an optical disk where the rotational speed of the spindle motor reaches its limit, a CAV mode is used for access, while in a region at the outside of the optical disk where a frequency band of an RF signal processor reaches its limit, a CLV mode is used for access. High-speed access to a maximum extent in a range of performance limits of the spindle motor and the RF signal processor is achieved. A retry feature retries failed access attempts to the optical disk when access failure is determined and a controller judges whether or not a defect of the optical disk has caused the access failure. The controller further judges if the predetermined cause of the access failure repeatedly occurs in a predetermined nearby range on the optical disk.

摘要翻译： 一种能够提高访问速度的光盘装置和具有这种光盘装置的图像拾取装置。 在主轴电动机的转速达到极限的光盘内部的区域中，使用CAV模式进行接入，而在光盘外部的RF信号处理器的频带 达到极限，CLV模式用于访问。 实现了在主轴电机和RF信号处理器的性能极限范围内的最大程度的高速访问。 当确定访问失败时，重试功能会重试对光盘的访问尝试失败，并且控制器判断光盘的缺陷是否导致访问失败。 控制器进一步判断在光盘上的预定附近范围内是否重复出现访问故障的预定原因。

公开(公告)号：US07809251B2

公开(公告)日：2010-10-05

申请号：US11276010

申请日：2006-02-09

申请人： Shinnosuke Torii

发明人： Shinnosuke Torii

IPC分类号： H04N5/00

CPC分类号： G11B7/0045 ,  G11B7/0946

摘要： A disk camcorder includes an image pickup optical system including an image pickup element, a memory for temporarily storing recorded information from the image pickup element, and a recording/reproduction unit which records the recording information stored in the memory onto a disk-shaped recording medium through an intermittent operation or reproduces the recording information recorded onto the disk-shaped recording medium through an intermittent operation, and temporarily stores the recording information. The disk camcorder has a plurality of modes including a first mode in which the recording medium is irradiated with light flux having a first laser power for a first time period, and a second mode in which the recording medium is irradiated with light flux having a second laser power lower than the first laser power, for a second time period, longer than the first time period.

摘要翻译： 盘摄像机包括摄像光学系统，包括图像拾取元件，用于临时存储来自图像拾取元件的记录信息的存储器以及将存储在存储器中的记录信息记录到盘形记录介质上的记录/再现单元 通过间歇操作或通过间歇操作再现记录在盘形记录介质上的记录信息，并临时存储记录信息。 盘摄像机具有多种模式，包括第一模式，其中记录介质用第一时间段具有第一激光功率的光束照射;以及第二模式，其中记录介质用具有第二激光功率的光通量照射 激光功率低于第一激光功率，第二时间段比第一时间段长。

公开(公告)号：US07800985B2

公开(公告)日：2010-09-21

申请号：US11885164

申请日：2006-01-30

申请人： Toshiya Matozaki ,  Nobuo Takeshita

发明人： Toshiya Matozaki ,  Nobuo Takeshita

IPC分类号： G11B7/09

CPC分类号： G11B7/0925 ,  G11B7/0946 ,  G11B7/13927

摘要： An optical pickup device includes an objective lens (1) for focusing a light flux onto an information layer of a disk-shaped medium, an objective lens driving unit that drives the objective lens (1) in a focus servo direction and in a tracking servo direction, a correction lens (14) disposed on the same optical axis as the objective lens (1), and a correction lens driving unit that drives the correction lens (14) in the same direction as the focus servo direction to control the condition of the light flux incident on the objective lens.

摘要翻译： 一种光拾取装置，包括用于将光束聚焦到盘形介质的信息层上的物镜（1），在聚焦伺服方向上驱动物镜（1）的物镜驱动单元和跟踪伺服 方向，设置在与物镜（1）相同的光轴上的校正透镜（14）和校正透镜驱动单元，其沿与聚焦伺服方向相同的方向驱动校正透镜（14），以控制校正透镜 入射到物镜上的光通量。

公开(公告)号：USRE41372E1

公开(公告)日：2010-06-08

申请号：US10750527

申请日：2003-12-31

申请人： Yuu Okada ,  Kenji Fujiune ,  Katsuya Watanabe ,  Takeharu Yamamoto ,  Jun Kikuchi

发明人： Yuu Okada ,  Kenji Fujiune ,  Katsuya Watanabe ,  Takeharu Yamamoto ,  Jun Kikuchi

IPC分类号： G11B7/00

CPC分类号： G11B7/0946 ,  G11B7/08511 ,  G11B7/0945 ,  G11B7/0948 ,  G11B2007/0006

摘要： An optical disc apparatus includes: a converging section for converging a light beam and irradiating a rotating information medium with the converged light beam; a moving section for moving the converging section, thereby moving a converging point of the converged light beam in a direction perpendicular to an information surface of the information medium; a converging state detection section for generating a focus servo signal which represents a converging state of the light beam on the information medium based on reflected light or transmitted light of the light beam from the information medium; a focus servo control section for controlling the moving section based on the focus servo signal, so that the light beam reaches a predetermined converging state on the information medium; and a focus pull-in section for turning ON the control by the focus servo control section, wherein the focus pull-in section turns ON the control by the focus servo control section in a case where the focus pull-in section determines that the converging point of the light beam is located in the vicinity of the minimum velocity position on the information medium axial deviation.

摘要翻译： 一种光盘装置，包括：聚光部分，用于会聚光束并用会聚光束照射旋转的信息介质; 移动部分，用于移动会聚部分，从而沿着与信息介质的信息表面垂直的方向移动会聚光束的会聚点; 收敛状态检测部分，用于基于来自信息介质的光束的反射光或透射光产生表示光束在信息介质上的会聚状态的聚焦伺服信号; 聚焦伺服控制部分，用于基于聚焦伺服信号控制移动部分，使得光束在信息介质上达到预定的会聚状态; 以及聚焦引入部，用于使聚焦伺服控制部的控制接通，其中，在聚焦引入部确定会聚的情况下，聚焦引入部使聚焦伺服控制部的控制接通 光点的位置位于信息介质轴向偏差的最小速度位置附近。