公开(公告)号：US20100118671A1

公开(公告)日：2010-05-13

申请号：US12594984

申请日：2008-04-09

申请人： Masaya Kuwahara

发明人： Masaya Kuwahara

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/0941 ,  G11B7/0945

摘要： There is provided an optical disc drive including a light axis deviation detection means (13) which detects a light axis deviation amount of an emission light, a tilt correction control means (15) which determines and outputs a tilt correction amount on the basis of an output of the light axis deviation detection means (13), a microcomputer (10B) which corrects an output of the tilt correction control means (15) and a warpage of a disc, and an addition means (16) which adds an output of the microcomputer (10B) and the output of the tilt correction control means (15), wherein a tilt actuator (2-9) is driven by an output of the addition means (16) through a tilt drive means (11) to control a tilt of an objective lens which focuses a light beam on the disc.

摘要翻译： 提供一种光盘驱动器，其包括检测发光的光轴偏差量的光轴偏差检测装置（13），倾斜校正控制装置（15），其基于以下方式确定并输出倾斜校正量 光轴偏差检测装置（13）的输出，校正倾斜校正控制装置（15）的输出的微型计算机（10B）和盘的翘曲;以及相加装置（16），其将 微型计算机（10B）和倾斜校正控制装置（15）的输出，其中倾斜致动器（2-9）由加法装置（16）的输出通过倾斜驱动装置（11）驱动以控制倾斜 将光束聚焦在光盘上的物镜。

公开(公告)号：US20100014397A1

公开(公告)日：2010-01-21

申请号：US12522122

申请日：2007-12-27

申请人： Hiroshi Hoshino ,  Nobuaki Hirai

发明人： Hiroshi Hoshino ,  Nobuaki Hirai

IPC分类号： G11B20/00 ,  G11B3/74

CPC分类号： G11B7/08511 ,  G11B7/0941 ,  G11B2007/0013

摘要： An optical disc driving device includes a control circuit 4 for performing a gain adjustment for each of two recording surfaces of a multilayered optical disc 1 on the basis of an FE signal in such a way as to maintain a state in which light is focused onto either of the recording surfaces, to generate a focus servo loop signal, and for generating a focus jump signal for causing either a transition from a state in which the light is focused onto one recording surface to a state in which the light is focused onto the other recording surface, or a transition in the opposite direction from a threshold set up on the basis of an amount of gain adjustment, and a focus actuator driving circuit 5 for performing either a focus jump or an operation of maintaining the state in which the light is focused.

摘要翻译： 光盘驱动装置包括：控制电路4，用于根据FE信号对多层光盘1的两个记录面的每一个进行增益调整，以便将光聚焦到任何一个 以产生聚焦伺服环路信号，并且用于产生聚焦跳跃信号，以产生从光聚焦到一个记录表面的状态到光聚焦到另一个的状态的转变 记录表面或与基于增益调整量设置的阈值相反方向的转变;以及聚焦致动器驱动电路5，用于执行聚焦跳跃或维持光的状态的操作 专注于

公开(公告)号：US20090316556A1

公开(公告)日：2009-12-24

申请号：US12432378

申请日：2009-04-29

申请人： Yuichi SUZUKI

发明人： Yuichi SUZUKI

IPC分类号： G11B20/18

CPC分类号： G11B20/10009 ,  G11B7/0941 ,  G11B7/14 ,  G11B20/10046 ,  G11B2220/2537

摘要： A driving apparatus includes: a driving mechanism slider-driving a head including a first optical pickup and a second optical pickup, the first optical pickup and the second optical pickup having a same specification; a calculating mechanism performing predetermined calculation using a first slide-error signal obtained by filtering a signal from the first optical pickup and a second slide-error signal obtained by filtering a signal from the second optical pickup; and an outputting mechanism outputting a signal from the calculating means as a slider control signal for driving the driving mechanism.

摘要翻译： 驱动装置包括：驱动机构滑块，驱动包括第一光学拾取器和第二光学拾取器的头部，第一光学拾取器和第二光学拾取器具有相同的规格; 使用通过对来自第一光学拾取器的信号进行滤波而获得的第一滑动误差信号和通过对来自第二光学拾取器的信号进行滤波而获得的第二滑动误差信号执行预定计算的计算机构; 以及输出机构，其输出来自所述计算装置的信号作为用于驱动所述驱动机构的滑块控制信号。

公开(公告)号：US20090245036A1

公开(公告)日：2009-10-01

申请号：US12161637

申请日：2007-01-18

申请人： Takashi Nakamura

发明人： Takashi Nakamura

IPC分类号： G11B7/00

CPC分类号： G11B7/0037 ,  G11B7/0941

摘要： A servo control device that is capable of optimizing gain that is used in servo control and stabilizing the servo control even when the gain changes due to change in the status of overrecording over the same radial position on an optical disc. When drawing a visible image on the label surface of an optical disc DK by an overrecording operation over the same radial position of that label surface, the servo control device comprises a CPU 8 that changes the gain used in the servo control to correspond with the number of times that overrecording is performed over the same position on that label surface.

摘要翻译： 伺服控制装置能够优化用于伺服控制的增益，并且即使增益由于在光盘上的相同径向位置的过度记录状态的变化而变化而使伺服控制稳定。 当通过在该标签表面的相同径向位置上的过度记录操作在光盘DK的标签表面上绘制可视图像时，伺服控制装置包括CPU 8，其将伺服控制中使用的增益改变为与数字 的超时记录在该标签表面上的相同位置上执行。

公开(公告)号：US07560889B2

公开(公告)日：2009-07-14

申请号：US11473766

申请日：2006-06-23

申请人： Stefan Kimmelmann

发明人： Stefan Kimmelmann

IPC分类号： G05B5/01

CPC分类号： H03H17/026 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0941 ,  G11B7/0945 ,  G11B7/0948

摘要： The invention relates to a method and an arrangement for a digital servo system with moving average filter (Amovavf 1, Amovavf 2),which is used as an input filter for a digital signal processor of the servo system to shorten processing delay, which improves the stability of the control loop and/or allow a fast servo signal processing, which improve the overall servo signal control performance. Said input filter provides average values of samples provided from an analog digital converter (ADC) at a frequency corresponding to a sample frequency (fADC) of the analog digital converter (ADC) and has an adjustable filter length (n), which is determined according to a quality of detector signals indicating a deviation from a target of servo means of the servo system. The invention is e.g. applicable for a fast digital servo system in an optical disc drive.

摘要翻译： 本发明涉及一种具有移动平均滤波器（Amovavf 1，Amovavf 2）的数字伺服系统的方法和装置，其用作伺服系统的数字信号处理器的输入滤波器，以缩短处理延迟，从而改善 控制回路的稳定性和/或允许快速的伺服信号处理，这提高了整体伺服信号的控制性能。 所述输入滤波器以与模拟数字转换器（ADC）的采样频率（fADC）相对应的频率从模拟数字转换器（ADC）提供的样本的平均值提供，并且具有可调节的滤波器长度（n），其根据 检测器信号的质量指示与伺服系统的伺服装置的目标的偏差。 本发明是例如 适用于光盘驱动器中的快速数字伺服系统。

公开(公告)号：US07545727B2

公开(公告)日：2009-06-09

申请号：US11506832

申请日：2006-08-21

申请人： Michihiko Iida ,  Kunihiko Miyake

发明人： Michihiko Iida ,  Kunihiko Miyake

IPC分类号： G11B7/00

CPC分类号： G11B7/126 ,  G11B7/00456 ,  G11B7/0062 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0941 ,  G11B7/24082 ,  G11B19/12 ,  G11B20/1217 ,  G11B23/30 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B27/3036 ,  G11B27/329 ,  G11B2020/1278 ,  G11B2220/2537 ,  G11B2220/2545

摘要： In a recording medium, the physical characteristic information of the recording medium, and more specifically, the configuration (shape and size) and the moment of inertia of the disc, is recorded. This enables a recording apparatus or a reading apparatus to easily and correctly determine the physical characteristics of the disc, and thus to perform suitable settings for the recording or reading operation.

公开(公告)号：US20090141597A1

公开(公告)日：2009-06-04

申请号：US12298149

申请日：2007-04-12

申请人： Coen Adrianus VERSCHUREN

发明人： Coen Adrianus VERSCHUREN

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/0941 ,  G11B7/1387

摘要： A near field optical recording device and method of operating a near field optical recording device, the device being arranged to cooperate with an optical record carrier. The device comprising means to adjust tilt of a refractive optical element with respect to the optical record carrier according to a distance between the refractive optical element and the data layer of the optical record carrier to be accessed.

摘要翻译： 近场光记录装置和操作近场光记录装置的方法，该装置被布置成与光记录载体协作。 该装置包括根据要被访问的光学记录载体的折射光学元件和数据层之间的距离调整折射光学元件相对于光学记录载体的倾斜的装置。

公开(公告)号：US07525898B2

公开(公告)日：2009-04-28

申请号：US10973353

申请日：2004-10-27

申请人： Yoshihiro Kanda

发明人： Yoshihiro Kanda

IPC分类号： G11B7/005

CPC分类号： G11B7/005 ,  G11B7/094 ,  G11B7/0941

摘要： An information playback apparatus comprises an input amplifier to which an RF signal reproduced from an optical disc is input; a high-pass filter to which the output of the input amplifier is input; an AD converter to which the output of the high-pass filter is input; a lag lead filter to which the output of the AD converter is input; and a demodulator for digitally processing the output of the lag lead filter to demodulate it as a binary signal. Thereby, an optical disc playback apparatus that realizes a DVD-RAM playback function at low cost can be realized.

摘要翻译： 信息重放装置包括输入从光盘再现的RF信号的输入放大器; 输入放大器的输出端的高通滤波器; 输入高通滤波器的输出的AD转换器; 输入AD转换器的输出的滞后引线滤波器; 以及用于对滞后引线滤波器的输出进行数字处理以将其解调为二进制信号的解调器。 由此，可以实现以低成本实现DVD-RAM再现功能的光盘播放装置。

公开(公告)号：US20090073827A1

公开(公告)日：2009-03-19

申请号：US12273601

申请日：2008-11-19

申请人： Bing-Yu Hsieh ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Chih-Ching Chen ,  Chia-Wei Liao

发明人： Bing-Yu Hsieh ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Chih-Ching Chen ,  Chia-Wei Liao

IPC分类号： G11B7/125

CPC分类号： H03M1/1225 ,  G11B7/0903 ,  G11B7/0912 ,  G11B7/0941 ,  G11B7/1263 ,  H03M1/129

摘要： An automatic power control system, a down sampling circuit and a down sampling method. The automatic power control system is incorporated in an optical disc drive comprising a laser diode for receiving a control signal to generate a laser beam; and a photodetector for detecting the laser beam to generate an analog input signal. The automatic power control system comprises an analog-to-digital converter, a down sampling circuit, a comparator, and a digital-to-analog converter. The analog-to-digital converter converts the analog input signal to digital data. The down sampling circuit, coupled to the analog-to-digital converter, comprises a down sampler, a counter, and a controller. The down sampler receives a predetermined amount of digital data to generate representation data. The counter, coupled to the down sampler, calculates the amount of digital data, and resets the down sampler when the amount equals or exceeds the predetermined count. The controller, coupled to the counter, disables the counter when the digital data is invalid. The comparator, coupled to the down sampling circuit, compares the representation data with predetermined target data to generate error data. The digital-to-analog converter, coupled to the comparator, converts the error data to analog to generate the control signal.

摘要翻译： 自动功率控制系统，下采样电路和下采样方法。 自动功率控制系统结合在包括用于接收控制信号以产生激光束的激光二极管的光盘驱动器中; 以及用于检测激光束以产生模拟输入信号的光电检测器。 自动功率控制系统包括模数转换器，下采样电路，比较器和数 - 模转换器。 模数转换器将模拟输入信号转换为数字数据。 耦合到模数转换器的下采样电路包括下采样器，计数器和控制器。 下采样器接收预定量的数字数据以产生表示数据。 耦合到下采样器的计数器计算数字数据量，并且当量等于或超过预定计数时重置下采样器。 耦合到计数器的控制器在数字数据无效时禁用计数器。 耦合到下采样电路的比较器将表示数据与预定目标数据进行比较以产生误差数据。 耦合到比较器的数模转换器将误差数据转换成模拟以产生控制信号。

公开(公告)号：US20090040887A1

公开(公告)日：2009-02-12

申请号：US12186841

申请日：2008-08-06

申请人： Yasuhiro Hayashi

发明人： Yasuhiro Hayashi

IPC分类号： G11B7/00

CPC分类号： G11B7/0941 ,  G11B20/18 ,  G11B2020/1823 ,  G11B2020/183

摘要： This disclosure concerns an optical-disk reproduction apparatus comprising an amplifier which supplies information from an optical-disk as an information signal and a servo error signal; a servo controller controlling an optical-pickup read operation in response to the servo error signal; a rotation address producer producing a rotation address corresponding to a rotation angle of the optical disk; a memory in which the information signal, the servo error signal, and the rotation address are received and stored while correlated with one another; an error flag producer producing an error flag when determining that an error exists in the information signal; and a system controller determining a factor of production of the error flag using the servo error signal and rotation address stored in the memory, when the error flag producer produces the error flag, the system controller adjusting a servo parameter in the servo control circuit according to the determination result.

摘要翻译： 本公开涉及一种光盘再现装置，包括：放大器，其将来自光盘的信息作为信息信号和伺服误差信号提供; 响应伺服误差信号控制光拾取器读取操作的伺服控制器; 旋转地址生成器，产生与光盘的旋转角度对应的旋转地址; 其中信息信号，伺服误差信号和旋转地址彼此相关地被接收和存储的存储器; 当确定信息信号中存在错误时产生错误标志的错误标志生成器; 以及系统控制器，当误差标志生成器产生错误标志时，使用存储在存储器中的伺服误差信号和旋转地址来确定误差标志的产生因子，系统控制器根据伺服控制电路调整伺服参数 确定结果。