公开(公告)号：US08619521B2

公开(公告)日：2013-12-31

申请号：US13352099

申请日：2012-01-17

Applicant: Yuichi Suzuki

Inventor： Yuichi Suzuki

IPC: G11B7/00

CPC classification number: G11B7/08517 ,  G11B7/00452 ,  G11B7/0956 ,  G11B7/2405 ,  G11B2007/0009 ,  G11B2007/0013

Abstract: A disc drive includes an optical pickup that emits laser light to a predetermined layer position via an objective lens and detects reflection light of the laser light, a tracking mechanism that drives the objective lens in a tracking direction, a tracking error signal generation unit that generates a tracking error signal, based on a light detecting signal for the reflection light obtained by the optical pickup, a tracking servo control unit that performs a tracking servo control based on the tracking error signal, and a control unit that makes the tracking servo control unit perform tracking servo pull-in on the basis of a frequency measurement result of the tracking error signal and a recording or non-recording determination result based on the light detecting signal.

Abstract translation: 磁盘驱动器包括通过物镜将激光发射到预定层位置并检测激光的反射光的跟踪机构，跟踪方向驱动物镜的跟踪机构，跟踪误差信号产生单元， 基于由光学拾取器获得的反射光的光检测信号的跟踪误差信号，基于跟踪误差信号执行跟踪伺服控制的跟踪伺服控制单元，以及使跟踪伺服控制单元 基于跟踪误差信号的频率测量结果和基于光检测信号的记录或非记录确定结果执行跟踪伺服拉入。

公开(公告)号：US20130235713A1

公开(公告)日：2013-09-12

申请号：US13769989

申请日：2013-02-19

Applicant: SONY CORPORATION

Inventor： Yuuichi Suzuki

IPC: G11B7/00

CPC classification number: G11B7/00 ,  G11B7/08517 ,  G11B7/0906

Abstract: Provided is an optical recording medium driving apparatus including a light radiating unit that radiates light to an optical recording medium, a light receiving unit that receives reflection light from the optical recording medium, in which four regions including a first region, a second region, a third region, and a fourth region are formed by being divided by a linear direction division line and a tracking direction division line, a first binarizing unit that obtains binarization signals, a first exclusive OR calculating unit, a second exclusive OR calculating unit, and an operation unit. The first and second exclusive OR calculating units and the operation unit operate in a state not synchronized with a channel clock.

Abstract translation: 本发明提供一种光记录介质驱动装置，其包括向光记录介质照射光的光照射单元，接收来自光记录介质的反射光的光接收单元，其中包括第一区域，第二区域， 第三区域和第四区域通过被线性分割线和跟踪方向分割线分割而形成，获得二进制化信号的第一二值化单元，第一异或运算单元，第二异或运算单元和 操作单元 第一和第二异或计算单元和操作单元在与通道时钟不同步的状态下操作。

公开(公告)号：US20120300604A1

公开(公告)日：2012-11-29

申请号：US13574539

申请日：2010-02-25

Applicant: Hiroshi Hoshino ,  Akira Kitada

Inventor： Hiroshi Hoshino ,  Akira Kitada

IPC: G11B7/00

CPC classification number: G11B7/08517 ,  G11B7/0953

Abstract: A disk drive determines, from eccentric amounts of individual prescribed rotation phases for one round of an optical disk 1, a rotation phase range in which a lens shift amount after tracking pulling-in of an object lens constituting an optical pickup 3 does not exceed a movable range of the object lens in a preset tracking direction, sets the rotation phase range as a tracking pulling-in range, and carries out tracking pulling-in of the optical pickup 3 while the rotation phase of the optical disk 1 is placed within the tracking pulling-in range.

Abstract translation: 磁盘驱动器从一个光盘1的各个规定旋转相位的偏心量确定旋转相位范围，其中构成光学拾取器3的物镜的跟踪拉入后的透镜偏移量不超过 在预设的跟踪方向上的物镜的可移动范围，将旋转相位范围设定为跟踪拉入范围，并且在将光盘1的旋转相位放置在光盘1内的同时进行光学拾取器3的跟踪拉入 追踪牵引范围。

公开(公告)号：US08213274B2

公开(公告)日：2012-07-03

申请号：US12820567

申请日：2010-06-22

Applicant: Yuta Takeda

Inventor： Yuta Takeda

IPC: G11B7/085

CPC classification number: G11B27/105 ,  G11B7/0051 ,  G11B7/08517

Abstract: There is provided an optical disc reproducing method capable of reproducing a non-finalized DVD+R. When a seek operation is performed from a present address on the non-finalized DVD+R to an outer circumferential side target address, the outer circumferential direction total jump number of tracks is calculated from a difference between the present address and the target address. When a first condition is satisfied in which the present address is in an inner circumferential zone, the target address is in a second outer circumferential zone, and the outer circumferential direction total jump number is 701 to 2500, the jump number of tracks is set to 340 smaller than the outer circumferential direction total jump number, and a traverse seek using a moving mechanism to move an optical pickup in a radius direction by 340 is performed.

Abstract translation: 提供了能够再现非最终DVD + R的光盘再现方法。 当从未确定的DVD + R上的当前地址执行寻道操作到外周侧目标地址时，根据当前地址和目标地址之间的差来计算轨迹的外圆周方向总跳转数。 当满足当前地址在内周区域的第一条件时，目标地址处于第二外周区域，外圆方向总跳转数为701〜2500，将轨道的跳转数设定为 340，并且使用移动机构进行横向移动，以将光学拾取器沿半径方向移动340。

公开(公告)号：US08000185B2

公开(公告)日：2011-08-16

申请号：US12332932

申请日：2008-12-11

Applicant: Yoshiomi Takarabe

Inventor： Yoshiomi Takarabe

IPC: G11B7/00

CPC classification number: G11B7/08517 ,  G11B20/18 ,  G11B2220/2537

Abstract: A drive signal generation circuit comprising: a tracking signal output circuit to output a tracking signal based on an error signal indicating a track deviation of laser light output from the optical pickup relative to a track, the tracking signal being a signal for driving a motor to move an optical pickup in a radial direction of an optical disc to reduce the track deviation of the laser light; a stop signal output circuit to output a stop signal for driving the motor to stop moving the optical pickup in the radial direction; and a switch circuit to output the tracking signal as a drive signal for driving the motor when a level of an output signal from the optical pickup is higher than a predetermined level, and to output the stop signal as the drive signal when the level of the output signal is lower than the predetermined level.

Abstract translation: 一种驱动信号发生电路，包括：跟踪信号输出电路，用于基于指示从光学拾取器相对于轨道输出的激光的轨道偏离的误差信号输出跟踪信号，跟踪信号是用于驱动电动机的信号 在光盘的径向上移动光学拾取器以减少激光的轨道偏离; 停止信号输出电路，输出用于驱动电动机的停止信号，以停止光学拾取器沿径向移动; 以及当来自光学拾取器的输出信号的电平高于预定电平时，输出跟踪信号作为用于驱动电动机的驱动信号的开关电路，并且当所述驱动信号的电平为 输出信号低于预定电平。

公开(公告)号：US07995438B2

公开(公告)日：2011-08-09

申请号：US11665372

申请日：2005-10-14

Applicant: Yoshiyuki Sasaki

Inventor： Yoshiyuki Sasaki

IPC: G11B7/00

CPC classification number: G11B27/105 ,  G11B7/08511 ,  G11B7/08517 ,  G11B2007/0013

Abstract: Upon scanning with an optical spot from a first address on the first recording layer as a start point for a second address on the second recording layer which is a target address for reproducing in order to detect a reproduction position, a scanning path for reaching the second address by scanning an already recorded zone of at least one of the first recording layer and the second recording layer is selected from a first scanning path to carry out seeking after a focus jump and a second scanning path to carry out seeking before the focus jump, based on a positional relationship between a known boundary position between a not-yet-recorded zone and an already-recorded zone of the first recording layer or the second recording layer and the first address.

Abstract translation: 当作为用于再现的目标地址的第二记录层上的第二地址的起始点，从第一记录层上的第一地址用光点扫描时，用于到达第二记录层的扫描路径 从第一扫描路径选择扫描已经记录的第一记录层和第二记录层中的一个的区域的地址，以在聚焦跳跃之后进行寻找，并且在第二扫描路径之前进行第二扫描路径以在聚焦跳转之前进行寻找， 基于未记录区域和已经记录的第一记录层或第二记录层之间的已知边界位置与第一地址之间的位置关系。

公开(公告)号：US07688690B2

公开(公告)日：2010-03-30

申请号：US11308266

申请日：2006-03-14

Applicant: Sung-Hung Li ,  Te-Ju Wang

Inventor： Sung-Hung Li ,  Te-Ju Wang

IPC: G11B7/00

CPC classification number: G11B19/247 ,  G11B7/08517 ,  G11B20/10222 ,  G11B20/14

Abstract: A method of determining whether an optical pick-up of an optical device passes through a data track of a storage device during track-seeking based on a radio frequency (RF) signal, a radio frequency zero cross (RFZC) signal radio and a track-seeking signal of the optical device. When the optical pick-up of the optical device passes through a data track of the storage device during track-seeking, a trigger signal is sent to a data phase locked loop of the optical device for frequency and phase adjustment. The method can activate the data phase locked loop of the optical device while the optical device is performing track-seeking.

Abstract translation: 一种基于射频（RF）信号，射频零交叉（RFZC）信号无线电和轨道来确定光学装置的光学拾取器是否在寻轨期间通过存储装置的数据轨道的方法 - 光学设备的信号。 当光学装置的光学拾取器在寻轨期间通过存储装置的数据轨道时，将触发信号发送到光学装置的数据锁相环，用于频率和相位调整。 该方法可以激活光学设备的数据锁相环，同时光学设备正在执行追踪。

公开(公告)号：US07623419B2

公开(公告)日：2009-11-24

申请号：US10768623

申请日：2004-01-30

Applicant: Yasuo Nakata

Inventor： Yasuo Nakata

IPC: G11B7/085

CPC classification number: G11B7/00375 ,  G11B7/002 ,  G11B7/08517 ,  G11B7/0946

Abstract: An off-track duty measurement unit measures off-track detection sensitivity on the basis of an off-track signal, and track cross cycle information that is obtained from a tracking error signal measured by a track cross cycle measurement unit, whereby off-track detection sensitivity can be measured more accurately. Further, an off-track detection sensitivity controller changes the detection sensitivity of an off-track signal detector according to the obtained off-track detection sensitivity, whereby the off-track sensitivity can be kept constant for various kinds of discs, and accordingly, stabilities of off-track detection, track pull-in judgement, and track jumping can be secured.

Abstract translation: 离轨占空比测量单元基于偏离轨道信号来测量偏离轨迹检测灵敏度，并且跟踪由轨道交叉循环测量单元测量的跟踪误差信号获得的交叉循环信息，由此进行离轨检测 灵敏度可以更准确地测量。 此外，偏离磁道检测灵敏度控制器根据获得的偏离磁道检测灵敏度改变偏离磁道信号检测器的检测灵敏度，从而可以使各种光盘的偏离磁道灵敏度保持不变，因此，稳定性 可以确保偏离轨迹检测，轨迹拉入判断和轨道跳跃。

公开(公告)号：US07561502B2

公开(公告)日：2009-07-14

申请号：US11698396

申请日：2007-01-26

Applicant: Natsuko Nobukuni ,  Takashi Ohno ,  Masae Kubo ,  Michikazu Horie

Inventor： Natsuko Nobukuni ,  Takashi Ohno ,  Masae Kubo ,  Michikazu Horie

IPC: G11B20/10

CPC classification number: G11B27/036 ,  G11B7/00454 ,  G11B7/00557 ,  G11B7/006 ,  G11B7/0062 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/08517 ,  G11B7/08541 ,  G11B7/126 ,  G11B7/24035 ,  G11B7/24082 ,  G11B7/243 ,  G11B7/2542 ,  G11B7/257 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/259 ,  G11B20/1254 ,  G11B20/1258 ,  G11B20/1426 ,  G11B27/034 ,  G11B27/24 ,  G11B27/3027 ,  G11B27/3063 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2020/10898 ,  G11B2020/1269 ,  G11B2020/1287 ,  G11B2220/20 ,  G11B2220/213 ,  G11B2220/216 ,  G11B2220/2545 ,  Y10T428/21

Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2-1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60-80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15-25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.

Abstract translation: 在基板上具有摆动槽的可重写光盘中，相变记录层的晶体和非晶态分别是未记录/擦除状态和记录状态。 当记录层暴露于记录光时，形成呈现记录状态的非晶标记。 相对于线速度为1.2-1.4m / s的参考速度（1倍速度）的2倍，4倍和8倍速度的任何一个，当约780nm的记录光时记录信号的调制m11 在波长上通过NA = 0.5或0.55的光学系统照射记录层是60-80％。 以1倍速度检索时记录信号的眼图的反射率的最高水平Rtop为15-25％，以1倍速度检索时的标记和标记间隔的单独长度的抖动为 35 ns以下。 从而实现了8倍或更高速度的记录，而不会至少以4倍速度损害与常规CD-RW规格的读取兼容性的风险。

公开(公告)号：US07452582B1

公开(公告)日：2008-11-18

申请号：US09573319

申请日：2000-05-18

Applicant: Natsuko Nobukuni ,  Takashi Ohno ,  Masae Kubo ,  Michikazu Horie

Inventor： Natsuko Nobukuni ,  Takashi Ohno ,  Masae Kubo ,  Michikazu Horie

IPC: B32B3/02

CPC classification number: G11B27/036 ,  G11B7/00454 ,  G11B7/00557 ,  G11B7/006 ,  G11B7/0062 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/08517 ,  G11B7/08541 ,  G11B7/126 ,  G11B7/24035 ,  G11B7/24082 ,  G11B7/243 ,  G11B7/2542 ,  G11B7/257 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/259 ,  G11B20/1254 ,  G11B20/1258 ,  G11B20/1426 ,  G11B27/034 ,  G11B27/24 ,  G11B27/3027 ,  G11B27/3063 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2020/10898 ,  G11B2020/1269 ,  G11B2020/1287 ,  G11B2220/20 ,  G11B2220/213 ,  G11B2220/216 ,  G11B2220/2545 ,  Y10T428/21

Abstract: In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2–1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60–80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15–25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.

Abstract translation: 在基板上具有摆动槽的可重写光盘中，相变记录层的晶体和非晶态分别是未记录/擦除状态和记录状态。 当记录层暴露于记录光时，形成呈现记录状态的非晶标记。 相对于线性速度为1.2-1.4m / s的参考速度（1倍速度）的2倍，4倍和8倍速度中的任一个，记录信号的调制m 11 当波长约780nm的记录光通过NA = 0.5或0.55的光学系统照射记录层时为60-80％。 在1倍速度检索期间，记录信号的眼图的反射率的最高级别R SUB顶部为15-25％，标记和标记间隔的单独长度的抖动 在1次速度检索期间为35ns以下。 从而实现了8倍或更高速度的记录，而不会至少以4倍速度损害与常规CD-RW规格的读取兼容性的风险。