公开(公告)号：US07106666B2

公开(公告)日：2006-09-12

申请号：US10682234

申请日：2003-10-10

申请人： Yoshinori Ishikawa ,  Yukinobu Tada ,  Motoyuki Suzuki

发明人： Yoshinori Ishikawa ,  Yukinobu Tada ,  Motoyuki Suzuki

IPC分类号： G11B21/08

CPC分类号： G11B7/08517 ,  G11B7/08511

摘要： During a normal operation, a tracking control signal from a tracking controller is supplied to an adder via a first switch and to a radial deviation component detector. The radial deviation component detector determines a radial deviation component EC of AC caused by radial deviation of an optical disk from the tracking control signal and supplied that component to the adder via another switch. For a track jump, the first switch is turned OFF, cutting off the tracking control signal. Thus, the radial deviation component EC and a jump pulse signal from a jump signal generator are added together by the adder. However, an offset of the tracking control signal TC detected by a DC component detector is further added. To avoid instability, the track jump is compensated so as to be normally carried out even if a DC offset is added to a tracking control signal.

摘要翻译： 在正常操作期间，来自跟踪控制器的跟踪控制信号通过第一开关和径向偏差分量检测器提供给加法器。 径向偏差分量检测器确定由光盘的径向偏离与跟踪控制信号引起的AC的径向偏差分量EC，并通过另一个开关将该分量提供给加法器。 对于轨道跳跃，第一个开关关闭，切断跟踪控制信号。 因此，来自跳跃信号发生器的径向偏差分量EC和跳跃脉冲信号由加法器相加在一起。 然而，还增加了由DC分量检测器检测到的跟踪控制信号TC的偏移。 为了避免不稳定性，即使对跟踪控制信号添加DC偏移，也可以补偿轨迹跳跃，以便正常地进行。

公开(公告)号：US20050088928A1

公开(公告)日：2005-04-28

申请号：US10988536

申请日：2004-11-16

申请人： Yukinobu Tada ,  Yoshinori Ishikawa

发明人： Yukinobu Tada ,  Yoshinori Ishikawa

IPC分类号： G11B7/00 ,  G11B7/085

CPC分类号： G11B19/02 ,  G11B7/08511 ,  G11B7/08529 ,  G11B19/12 ,  G11B2007/0013

摘要： A focus jump technique enables focus control on recording layers of a disc in such a manner that its effect is not absorbed by disturbance or a variation in the movement speed of an objective lens. The technique involves monitoring level of a focus error signal and rejecting noise from the error signal. A speed sensor detects movement speed of an objective lens; and a speed control circuit generates a voltage for controlling the objective lens, based on the detected movement speed. Movement speed of the objective lens is detected during focus jump, a corresponding lens drive signal is generated, and an end position is determined from behavior of the error signal immediately before the end of the jump. A focus control is pulled, from a focus point corresponding to one recording layer, into a focus point corresponding to another recording layer forcibly in a stable manner.

摘要翻译： 聚焦跳跃技术使得对盘的记录层进行聚焦控制，使得其效果不被物理干扰或物镜的移动速度的变化所吸收。 该技术涉及监测聚焦误差信号的电平并且从误差信号中抑制噪声。 速度传感器检测物镜的移动速度; 并且速度控制电路基于检测到的移动速度产生用于控制物镜的电压。 在聚焦跳跃期间检测物镜的移动速度，产生对应的镜头驱动信号，并且根据在跳跃结束之前的误差信号的行为来确定结束位置。 从对应于一个记录层的对焦点将焦点控制以稳定的方式被强制地拉入对应于另一记录层的对焦点。

公开(公告)号：US07200075B2

公开(公告)日：2007-04-03

申请号：US10988537

申请日：2004-11-16

申请人： Yukinobu Tada ,  Yoshinori Ishikawa

发明人： Yukinobu Tada ,  Yoshinori Ishikawa

IPC分类号： G11B7/00

CPC分类号： G11B19/02 ,  G11B7/08511 ,  G11B7/08529 ,  G11B19/12 ,  G11B2007/0013

摘要： A focus jump technique enables focus control on recording layers of a disc in such a manner that its effect is not absorbed by disturbance or a variation in the movement speed of an objective lens. The technique involves monitoring level of a focus error signal and rejecting noise from the error signal. A speed sensor detects movement speed of an objective lens; and a speed control circuit generates a voltage for controlling the objective lens, based on the detected movement speed. Movement speed of the objective lens is detected during focus jump, a corresponding lens drive signal is generated, and an end position is determined from behavior of the error signal immediately before the end of the jump. A focus control is pulled, from a focus point corresponding to one recording layer, into a focus point corresponding to another recording layer forcibly in a stable manner.

摘要翻译： 聚焦跳跃技术使得对盘的记录层进行聚焦控制，使得其效果不被物理干扰或物镜的移动速度的变化所吸收。 该技术涉及监测聚焦误差信号的电平并且从误差信号中抑制噪声。 速度传感器检测物镜的移动速度; 并且速度控制电路基于检测到的移动速度产生用于控制物镜的电压。 在聚焦跳跃期间检测物镜的移动速度，产生对应的镜头驱动信号，并且根据在跳跃结束之前的误差信号的行为来确定结束位置。 从对应于一个记录层的对焦点将焦点控制以稳定的方式被强制地拉入对应于另一记录层的对焦点。

公开(公告)号：US07471597B2

公开(公告)日：2008-12-30

申请号：US11715407

申请日：2007-03-08

申请人： Yukinobu Tada ,  Yoshinori Ishikawa

发明人： Yukinobu Tada ,  Yoshinori Ishikawa

IPC分类号： G11B7/00

CPC分类号： G11B19/02 ,  G11B7/08511 ,  G11B7/08529 ,  G11B19/12 ,  G11B2007/0013

摘要： A focus jump technique enables focus control on recording layers of a disc in such a manner that its effect is not absorbed by disturbance or a variation in the movement speed of an objective lens. The technique involves monitoring level of a focus error signal and rejecting noise from the error signal. A speed sensor detects movement speed of an objective lens; and a speed control circuit generates a voltage for controlling the objective lens, based on the detected movement speed. Movement speed of the objective lens is detected during focus jump, a corresponding lens drive signal is generated, and an end position is determined from behavior of the error signal immediately before the end of the jump. A focus control is pulled, from a focus point corresponding to one recording layer, into a focus point corresponding to another recording layer forcibly in a stable manner.

摘要翻译： 聚焦跳跃技术使得对盘的记录层进行聚焦控制，使得其效果不被物理干扰或物镜的移动速度的变化所吸收。 该技术涉及监测聚焦误差信号的电平并且从误差信号中抑制噪声。 速度传感器检测物镜的移动速度; 并且速度控制电路基于检测到的移动速度产生用于控制物镜的电压。 在聚焦跳跃期间检测物镜的移动速度，产生对应的镜头驱动信号，并且根据在跳跃结束之前的误差信号的行为来确定结束位置。 从对应于一个记录层的对焦点将焦点控制以稳定的方式被强制地拉入对应于另一记录层的对焦点。

公开(公告)号：US07111133B2

公开(公告)日：2006-09-19

申请号：US10720147

申请日：2003-11-25

申请人： Yoshinori Ishikawa ,  Yukinobu Tada ,  Masato Soma ,  Dan Aoki

发明人： Yoshinori Ishikawa ,  Yukinobu Tada ,  Masato Soma ,  Dan Aoki

IPC分类号： G06F12/00 ,  G06F13/00

CPC分类号： G06F8/60

摘要： In a control apparatus for operating with program data, it is possible to alter the operation of a control circuit by rewriting the data of the program memory built in an LSI, with ease and at a low cost independently of the operation of the control circuit.For that purpose, the control apparatus includes a ROM, a SRAM, a means for writing data in the SRAM, a selection means for selecting the output from the ROM or the SRAM in accordance with the addresses supplied to the ROM and the SRAM, and a control means for outputting the addresses to the ROM and the SRAM and operating with the output from the selection means as program data.

摘要翻译： 在用于与程序数据一起操作的控制装置中，可以独立于控制电路的操作，以容易且低成本地重写LSI内置的程序存储器的数据来改变控制电路的操作。 为此，控制装置包括ROM，SRAM，用于在SRAM中写入数据的装置，用于根据提供给ROM和SRAM的地址从ROM或SRAM中选择输出的选择装置，以及 一个控制装置，用于将地址输出到ROM和SRAM，并且以选择装置的输出作为程序数据进行操作。

公开(公告)号：US20050088929A1

公开(公告)日：2005-04-28

申请号：US10988537

申请日：2004-11-16

申请人： Yukinobu Tada ,  Yoshinori Ishikawa

发明人： Yukinobu Tada ,  Yoshinori Ishikawa

IPC分类号： G11B7/00 ,  G11B7/085

CPC分类号： G11B19/02 ,  G11B7/08511 ,  G11B7/08529 ,  G11B19/12 ,  G11B2007/0013

摘要： A focus jump technique enables focus control on recording layers of a disc in such a manner that its effect is not absorbed by disturbance or a variation in the movement speed of an objective lens. The technique involves monitoring level of a focus error signal and rejecting noise from the error signal. A speed sensor detects movement speed of an objective lens; and a speed control circuit generates a voltage for controlling the objective lens, based on the detected movement speed. Movement speed of the objective lens is detected during focus jump, a corresponding lens drive signal is generated, and an end position is determined from behavior of the error signal immediately before the end of the jump. A focus control is pulled, from a focus point corresponding to one recording layer, into a focus point corresponding to another recording layer forcibly in a stable manner.

公开(公告)号：US20050088927A1

公开(公告)日：2005-04-28

申请号：US10988533

申请日：2004-11-16

申请人： Yukinobu Tada ,  Yoshinori Ishikawa

发明人： Yukinobu Tada ,  Yoshinori Ishikawa

IPC分类号： G11B7/00 ,  G11B7/085

CPC分类号： G11B19/02 ,  G11B7/08511 ,  G11B7/08529 ,  G11B19/12 ,  G11B2007/0013

摘要： A focus jump technique enables focus control on recording layers of a disc in such a manner that its effect is not absorbed by disturbance or a variation in the movement speed of an objective lens. The technique involves monitoring level of a focus error signal and rejecting noise from the error signal. A speed sensor detects movement speed of an objective lens; and a speed control circuit generates a voltage for controlling the objective lens, based on the detected movement speed. Movement speed of the objective lens is detected during focus jump, a corresponding lens drive signal is generated, and an end position is determined from behavior of the error signal immediately before the end of the jump. A focus control is pulled, from a focus point corresponding to one recording layer, into a focus point corresponding to another recording layer forcibly in a stable manner.

公开(公告)号：US06665237B2

公开(公告)日：2003-12-16

申请号：US09935769

申请日：2001-08-24

申请人： Yoshinori Ishikawa ,  Yukinobu Tada ,  Masato Soma ,  Dan Aoki

发明人： Yoshinori Ishikawa ,  Yukinobu Tada ,  Masato Soma ,  Dan Aoki

IPC分类号： G11B700

CPC分类号： G06F8/60

摘要： In a control apparatus for operating with program data, it is possible to alter the operation of a control circuit by rewriting the data of the program memory built in an LSI, with ease and at a low cost independently of the operation of the control circuit. For that purpose, the control apparatus includes a ROM, a SRAM, a means for writing data in the SRAM, a selection means for selecting the output from the ROM or the SRAM in accordance with the addresses supplied to the ROM and the SRAM, and a control means for outputting the addresses to the ROM and the SRAM and operating with the output from the selection means as program data.

公开(公告)号：US08284644B2

公开(公告)日：2012-10-09

申请号：US12938809

申请日：2010-11-03

申请人： Yukinobu Tada ,  Yoshinori Ishikawa

发明人： Yukinobu Tada ,  Yoshinori Ishikawa

IPC分类号： G11B7/00

CPC分类号： G11B19/02 ,  G11B7/08511 ,  G11B7/08529 ,  G11B19/12 ,  G11B2007/0013

摘要： A focus jump technique enables focus control on recording layers of a disc in such a manner that its effect is not absorbed by disturbance or a variation in the movement speed of an objective lens. The technique involves monitoring level of a focus error signal and rejecting noise from the error signal. A speed sensor detects movement speed of an objective lens; and a speed control circuit generates a voltage for controlling the objective lens, based on the detected movement speed. Movement speed of the objective lens is detected during focus jump, a corresponding lens drive signal is generated, and an end position is determined from behavior of the error signal immediately before the end of the jump. A focus control is pulled, from a focus point corresponding to one recording layer, into a focus point corresponding to another recording layer forcibly in a stable manner.

摘要翻译： 聚焦跳跃技术使得对盘的记录层进行聚焦控制，使得其效果不被物理干扰或物镜的移动速度的变化所吸收。 该技术涉及监测聚焦误差信号的电平并且从误差信号中抑制噪声。 速度传感器检测物镜的移动速度; 并且速度控制电路基于检测到的移动速度产生用于控制物镜的电压。 在聚焦跳跃期间检测物镜的移动速度，产生对应的镜头驱动信号，并且根据在跳跃结束之前的误差信号的行为来确定结束位置。 从对应于一个记录层的对焦点将焦点控制以稳定的方式被强制地拉入对应于另一记录层的对焦点。

公开(公告)号：US20110044144A1

公开(公告)日：2011-02-24

申请号：US12938809

申请日：2010-11-03

申请人： Yukinobu Tada ,  Yoshinori Ishikawa

发明人： Yukinobu Tada ,  Yoshinori Ishikawa

IPC分类号： G11B20/10

CPC分类号： G11B19/02 ,  G11B7/08511 ,  G11B7/08529 ,  G11B19/12 ,  G11B2007/0013

摘要： A focus jump technique enables focus control on recording layers of a disc in such a manner that its effect is not absorbed by disturbance or a variation in the movement speed of an objective lens. The technique involves monitoring level of a focus error signal and rejecting noise from the error signal. A speed sensor detects movement speed of an objective lens; and a speed control circuit generates a voltage for controlling the objective lens, based on the detected movement speed. Movement speed of the objective lens is detected during focus jump, a corresponding lens drive signal is generated, and an end position is determined from behavior of the error signal immediately before the end of the jump. A focus control is pulled, from a focus point corresponding to one recording layer, into a focus point corresponding to another recording layer forcibly in a stable manner.

摘要翻译： 聚焦跳跃技术使得对盘的记录层进行聚焦控制，使得其效果不被物理干扰或物镜的移动速度的变化所吸收。 该技术涉及监测聚焦误差信号的电平并且从误差信号中抑制噪声。 速度传感器检测物镜的移动速度; 并且速度控制电路基于检测到的移动速度产生用于控制物镜的电压。 在聚焦跳跃期间检测物镜的移动速度，产生相应的镜头驱动信号，并且根据在跳跃结束之前的误差信号的行为来确定结束位置。 从对应于一个记录层的对焦点将焦点控制以稳定的方式被强制地拉入对应于另一记录层的对焦点。