公开(公告)号：US07616533B2

公开(公告)日：2009-11-10

申请号：US11490710

申请日：2006-07-21

申请人： Mitsuru Harai ,  Tsuyoshi Toda ,  Nobuhiro Takeda

发明人： Mitsuru Harai ,  Tsuyoshi Toda ,  Nobuhiro Takeda

IPC分类号： G11B7/00

CPC分类号： G11B7/08517 ,  G11B7/00718

摘要： An optical disc apparatus, as a learning operation before a recording or reproducing operation, rotates an optical disc at a first speed to read PID information, discriminates between lands and grooves of the optical disc, detects switching positions between lands and grooves, sets a rotation angle position of tracking pull-in of an objective lens of a time length that allows the PID information to be stably read, with respect to the switching position, and stores the set position information of tracking pull-in as learning result information. During recording or reproducing, the optical disc apparatus rotates the optical disk at a second speed higher than the first speed, pulls in the objective lens for tracking based on the stored position information of tracking pull-in, reads PID information, and performs the recording or reproducing operation while discriminating between lands and grooves and detecting switching positions between lands and grooves.

摘要翻译： 作为记录或再现操作之前的学习操作的光盘装置，以第一速度旋转光盘以读取PID信息，区分光盘的平台和凹槽之间，检测平台和凹槽之间的切换位置，设置旋转 相对于切换位置使得能够稳定地读取PID信息的时间长度的物镜的跟踪拉入的角度位置，并存储跟踪拉入的设定位置信息作为学习结果信息。 在记录或再现期间，光盘装置以比第一速度高的第二速度旋转光盘，根据所存储的跟踪引入位置信息，读取PID信息，拉入用于跟踪的物镜，读取PID信息，并执行记录 或者在区分焊盘和槽之间进行再现操作，并且检测焊盘和槽之间的切换位置。

公开(公告)号：US20070104052A1

公开(公告)日：2007-05-10

申请号：US11490710

申请日：2006-07-21

申请人： Mitsuru Harai ,  Tsuyoshi Toda ,  Nobuhiro Takeda

发明人： Mitsuru Harai ,  Tsuyoshi Toda ,  Nobuhiro Takeda

IPC分类号： G11B19/00

CPC分类号： G11B7/08517 ,  G11B7/00718

摘要： An optical disc apparatus, as a learning operation before a recording or reproducing operation, rotates an optical disc at a first speed to read PID information, discriminates between lands and grooves of the optical disc, detects switching positions between lands and grooves, sets a rotation angle position of tracking pull-in of an objective lens of a time length that allows the PID information to be stably read, with respect to the switching position, and stores the set position information of tracking pull-in as learning result information. During recording or reproducing, the optical disc apparatus rotates the optical disk at a second speed higher than the first speed, pulls in the objective lens for tracking based on the stored position information of tracking pull-in, reads PID information, and performs the recording or reproducing operation while discriminating between lands and grooves and detecting switching positions between lands and grooves.

摘要翻译： 作为记录或再现操作之前的学习操作的光盘装置，以第一速度旋转光盘以读取PID信息，区分光盘的平台和凹槽之间，检测平台和凹槽之间的切换位置，设置旋转 相对于切换位置使得能够稳定地读取PID信息的时间长度的物镜的跟踪拉入的角度位置，并存储跟踪拉入的设定位置信息作为学习结果信息。 在记录或再现期间，光盘装置以比第一速度高的第二速度旋转光盘，根据所存储的跟踪引入位置信息，读取PID信息，拉入用于跟踪的物镜，读取PID信息，并执行记录 或者在区分焊盘和槽之间进行再现操作，并且检测焊盘和槽之间的切换位置。

公开(公告)号：US20070121441A1

公开(公告)日：2007-05-31

申请号：US11500443

申请日：2006-08-08

申请人： Takeyoshi Kataoka ,  Mitsuru Harai ,  Nobuhiro Takeda ,  Tsuyoshi Toda

发明人： Takeyoshi Kataoka ,  Mitsuru Harai ,  Nobuhiro Takeda ,  Tsuyoshi Toda

IPC分类号： G11B7/00

CPC分类号： G11B7/08517 ,  G11B7/00718

摘要： Within a seek control method for moving an optical spot onto an arbitrary track, by moving the optical spot into a radial direction of an optical information recording medium, which is formed with lands and grooves, spirally, on an information recording surface thereof, calculation is made on time from staring of seek operation up to completion of pulling the optical spot onto a target track, calculating is made an amount of rotation of the optical information recording medium within that time, which is calculated in the above, determination is made on whether the pulling operation can be conducted or not within a pull-in escape region on a land/groove exchange portion of a tack on the information recording surface of the optical information recording medium, upon the amount of rotation which is calculated in the above, and a starting position of the pulling operation is changed so that the pulling operation can be executed escaping from said pulling escape region, upon basis of result of the determination, thereby achieving the seek operation, with stability and high-speed in timing of conducting tracking servo, also for the optical disk forming the lands and the grooves on the recording surface thereof.

摘要翻译： 在用于将光点移动到任意轨道上的搜索控制方法中，通过在其信息记录表面上螺旋地将形成有平台和凹槽的光学信息记录介质移动到光学信息记录介质的径向方向上，计算是 从寻找操作直到完成将光点拉到目标轨道上时间准确地计算，在上述计算的时间内计算光信息记录介质的旋转量，确定是否 根据上述计算的旋转量，可以在光信息记录介质的信息记录表面上的大头钉的平台/凹槽交换部分的拉入逃逸区域内进行拉拔操作;以及 根据结果​​，改变拉动操作的开始位置，从而可以执行从所述牵引逃逸区域逸出的拉动操作 从而在进行跟踪伺服的定时的稳定性和高速度下也实现寻道操作，以及在其记录表面上形成焊盘和凹槽的光盘。

公开(公告)号：US20070121444A1

公开(公告)日：2007-05-31

申请号：US11492850

申请日：2006-07-26

申请人： Nobuhiro Takeda ,  Mitsuru Harai

发明人： Nobuhiro Takeda ,  Mitsuru Harai

IPC分类号： G11B19/00

CPC分类号： G11B19/26 ,  G11B7/095 ,  G11B19/28 ,  G11B2007/0013

摘要： Disclosed is an optical disc apparatus that sets a plurality of virtual zones, which correspond to a plurality of zones that are arranged in the radial direction of an optical disc, for a plurality of recording layers of the optical disc. When a servo signal distortion is detected in a virtual zone to change the rotation speed of the optical disc to a low speed in the virtual zone during an information recording or reproduction operation relative to a first recording layer, the optical disc apparatus stores the change information. When a recording or reproducing operation is to be performed in a virtual zone of a second recording layer, which is in the same disc radial position as the virtual zone of the first layer, the optical disc apparatus changes the rotation speed of the optical disc for the virtual zone to a low speed in accordance with the change information.

摘要翻译： 公开了一种光盘装置，用于为光盘的多个记录层设置对应于沿光盘的径向布置的多个区域的多个虚拟区域。 当在相对于第一记录层的信息记录或再现操作期间在虚拟区域中检测到伺服信号失真以在虚拟区域中将光盘的旋转速度改变到低速时，光盘装置存储改变信息 。 当在与第一层的虚拟区域处于相同的盘径向位置的第二记录层的虚拟区域中进行记录或再现操作时，光盘装置改变光盘的旋转速度， 根据变化信息，虚拟区域以低速进行。

公开(公告)号：US20070183284A1

公开(公告)日：2007-08-09

申请号：US11490532

申请日：2006-07-21

申请人： Koichiro Nishimura ,  Toru Kawashima ,  Mitsuru Harai ,  Tsuyoshi Toda

发明人： Koichiro Nishimura ,  Toru Kawashima ,  Mitsuru Harai ,  Tsuyoshi Toda

IPC分类号： G11B7/12

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B7/0948

摘要： Test writing is executed while skipping areas where deviations are present on an optical disk to thereby improve accuracy and reliability of an optimum recording condition to be derived. A deviation detecting unit detects the deviations of a guide groove on the optical disk on the basis of a fluctuation amount of a focus error signal or a tracking error signal, and registers information of the detected deviations onto a memory. A test writing processing unit refers to the memory, and records and reproduces a test signal while skipping the areas where the deviations are detected.

摘要翻译： 在跳过光盘上存在偏差的区域时执行测试写入，从而提高要获得的最佳记录条件的准确性和可靠性。 偏差检测单元基于聚焦误差信号或跟踪误差信号的波动量检测光盘上的引导槽的偏差，并将检测到的偏差的信息登记到存储器上。 测试写入处理单元参考存储器，并且在跳过检测到偏差的区域时记录和再现测试信号。

公开(公告)号：US20070121445A1

公开(公告)日：2007-05-31

申请号：US11491991

申请日：2006-07-25

申请人： Koichiro Nishimura ,  Tsuyoshi Toda ,  Mitsuru Harai ,  Koichi Suzuki ,  Toru Kawashima

发明人： Koichiro Nishimura ,  Tsuyoshi Toda ,  Mitsuru Harai ,  Koichi Suzuki ,  Toru Kawashima

IPC分类号： G11B20/10

CPC分类号： G11B7/005 ,  G11B7/1263

摘要： Disclosed is a method of reproducing optical information by applying laser light to the medium while rotating a recording medium having concentric information tracks or a spiral information track so that the linear velocity of the medium is constant, and thereby reproducing the information recorded on the recording medium by the reflected light. In this method, in moving a reproduction radial position to a second radial position different from the current position, a laser power is changed to second laser power, which is different from current laser power, and then the light spot is moved to the second radial position. This method can prevent degradation of a medium in reproduction light resistance caused by substantially high power reproduction, and erasing or destruction of already recorded data that may be caused, in high-speed recording of a rewritable-type or write-once-type optical disc, when the linear velocity at the time of reproduction becomes slow, e.g. , in an access operation at the time of reproduction with a constant linear velocity and in a return operation from rotational stop due to a standby state.

摘要翻译： 公开了一种通过在旋转具有同心信息轨道或螺旋信息轨道的记录介质的同时向介质施加激光以使介质的线速度恒定从而再现记录在记录介质上的信息来再现光学信息的方法 通过反射光。 在这种方法中，在将再现径向位置移动到与当前位置不同的第二径向位置时，将激光功率改变为与当前激光功率不同的第二激光功率，然后将光斑移动到第二径向 位置。 这种方法可以防止在可重写型或一次写入式光盘的高速记录中由于基本上高功率再现引起的再现光阻中介质的劣化，以及擦除或破坏可能引起的已经记录的数据 当再现时的线速度变慢时，例如， 在以一定的线速度进行再现时的访问操作和由于待机状态的旋转停止的返回操作。

公开(公告)号：US07626903B2

公开(公告)日：2009-12-01

申请号：US11492850

申请日：2006-07-26

申请人： Nobuhiro Takeda ,  Mitsuru Harai

发明人： Nobuhiro Takeda ,  Mitsuru Harai

IPC分类号： G11B7/00

CPC分类号： G11B19/26 ,  G11B7/095 ,  G11B19/28 ,  G11B2007/0013

摘要： Disclosed is an optical disc apparatus that sets a plurality of virtual zones, which correspond to a plurality of zones that are arranged in the radial direction of an optical disc, for a plurality of recording layers of the optical disc. When a servo signal distortion is detected in a virtual zone to change the rotation speed of the optical disc to a low speed in the virtual zone during an information recording or reproduction operation relative to a first recording layer, the optical disc apparatus stores the change information. When a recording or reproducing operation is to be performed in a virtual zone of a second recording layer, which is in the same disc radial position as the virtual zone of the first layer, the optical disc apparatus changes the rotation speed of the optical disc for the virtual zone to a low speed in accordance with the change information.

摘要翻译： 公开了一种光盘装置，用于为光盘的多个记录层设置对应于沿光盘的径向布置的多个区域的多个虚拟区域。 当在相对于第一记录层的信息记录或再现操作期间在虚拟区域中检测到伺服信号失真以在虚拟区域中将光盘的旋转速度改变到低速时，光盘装置存储改变信息 。 当在与第一层的虚拟区域处于相同的盘径向位置的第二记录层的虚拟区域中执行记录或再现操作时，光盘装置改变光盘的旋转速度， 根据变化信息，虚拟区域以低速进行。

公开(公告)号：US07570550B2

公开(公告)日：2009-08-04

申请号：US11492922

申请日：2006-07-26

申请人： Mitsuru Harai ,  Norimoto Ichikawa ,  Nobuhiro Takeda

发明人： Mitsuru Harai ,  Norimoto Ichikawa ,  Nobuhiro Takeda

IPC分类号： G11B7/00

CPC分类号： G11B7/0908 ,  G11B19/28

摘要： In an optical disc device employing a CLV method, executing pickup return processing when focus drop occurs during recording poses problems of increased waiting time for rotation and increased focus servo recovery processing time. When defocusing occurs and focus pull-in cannot be achieved by retry, a first rotation frequency at a radial position thereof is calculated. Next, a second rotation frequency at the innermost circumferential position at the current speed is calculated. Next, a third rotation frequency at a radial position where recording is restarted after focus servo recovery is calculated. Next, a fourth rotation frequency at pickup return position at a different speed is calculated. Next, based on the relationship among the first to fourth rotation frequencies described above, a rotation speed at pickup return is selected so that a rotation frequency difference becomes the smallest in all conditions: at pickup return from defocusing, servo recovery after pickup return, and access operation after the servo recovery.

摘要翻译： 在采用CLV方法的光盘装置中，当在记录期间出现聚焦下降时执行拾取返回处理造成旋转等待时间增加和聚焦伺服恢复处理时间增加的问题。 当发生散焦并且通过重试不能实现聚焦拉入时，计算其径向位置处的第一旋转频率。 接下来，计算当前速度在最内圆周位置处的第二旋转频率。 接下来，计算在聚焦伺服恢复之后重新开始记录的径向位置处的第三旋转频率。 接下来，计算不同速度的拾取返回位置处的第四旋转频率。 接下来，基于上述第一至第四旋转频率之间的关系，选择拾取返回时的旋转速度，使得在所有条件下，旋转频率差变得最小：从散焦拾取返回，拾取返回后伺服恢复，以及 伺服恢复后进入操作。

公开(公告)号：US20080008057A1

公开(公告)日：2008-01-10

申请号：US11625385

申请日：2007-01-22

申请人： Nobuhiro Takeda ,  Mitsuru Harai ,  Toshitaka Nakashima

发明人： Nobuhiro Takeda ,  Mitsuru Harai ,  Toshitaka Nakashima

IPC分类号： G11B7/00

CPC分类号： G11B7/0909

摘要： An optical disc apparatus is designed to perform focus control of an objective lens of an optical pickup by generating a first focus error signal of an astigmatism method from a signal based on 0-order light of a reflected laser beam, as well as generating a second focus error signal of a differential astigmatism method from the signal based on the 0-order light and from a signal based on ±1-order light. The focus control of the objective lens is performed by the second focus error signal during recording or reproducing operation within a recording layer of an optical disc. The focus control is performed by the first focus error signal when a focus jump is performed in response to switching of the recording layer of the optical disc.

摘要翻译： 光盘装置被设计成通过从基于反射激光束的0次光的信号产生像散方法的第一聚焦误差信号，并且产生第二个光学拾取器的物镜的焦点控制 基于0阶光的信号和基于±1阶光的信号的差分散光法的聚焦误差信号。 在光盘的记录层内的记录或再现操作期间，通过第二聚焦误差信号来执行物镜的聚焦控制。 当响应于光盘的记录层的切换执行聚焦跳跃时，由第一聚焦误差信号执行聚焦控制。

公开(公告)号：US20070133363A1

公开(公告)日：2007-06-14

申请号：US11492922

申请日：2006-07-26

申请人： Mitsuru Harai ,  Norimoto Ichikawa ,  Nobuhiro Takeda

发明人： Mitsuru Harai ,  Norimoto Ichikawa ,  Nobuhiro Takeda

IPC分类号： G11B7/00

CPC分类号： G11B7/0908 ,  G11B19/28

摘要： In an optical disc device employing a CLV method, executing pickup return processing when focus drop occurs during recording poses problems of increased waiting time for rotation and increased focus servo recovery processing time. When defocusing occurs and focus pull-in cannot be achieved by retry, a first rotation frequency at a radial position thereof is calculated. Next, a second rotation frequency at the innermost circumferential position at the current speed is calculated. Next, a third rotation frequency at a radial position where recording is restarted after focus servo recovery is calculated. Next, a fourth rotation frequency at pickup return position at a different speed is calculated. Next, based on the relationship among the first to fourth rotation frequencies described above, a rotation speed at pickup return is selected so that a rotation frequency difference becomes the smallest in all conditions: at pickup return from defocusing, servo recovery after pickup return, and access operation after the servo recovery.

摘要翻译： 在采用CLV方法的光盘装置中，当在记录期间出现聚焦下降时执行拾取返回处理造成旋转等待时间增加和聚焦伺服恢复处理时间增加的问题。 当发生散焦并且通过重试不能实现聚焦拉入时，计算其径向位置处的第一旋转频率。 接下来，计算当前速度在最内圆周位置处的第二旋转频率。 接下来，计算在聚焦伺服恢复之后重新开始记录的径向位置处的第三旋转频率。 接下来，计算不同速度的拾取返回位置处的第四旋转频率。 接下来，基于上述第一至第四旋转频率之间的关系，选择拾取返回时的旋转速度，使得在所有条件下，旋转频率差变得最小：从散焦拾取返回，拾取返回后伺服恢复，以及 伺服恢复后进入操作。