公开(公告)号：US06822936B2

公开(公告)日：2004-11-23

申请号：US09910586

申请日：2001-07-20

申请人： Kazuhiko Ono ,  Hirotoshi Fukuda ,  Takeshi Ikeda

发明人： Kazuhiko Ono ,  Hirotoshi Fukuda ,  Takeshi Ikeda

IPC分类号： G11B509

CPC分类号： G11B19/12 ,  G11B7/0053 ,  G11B7/0945 ,  G11B2007/0006 ,  G11B2007/0013

摘要： The invention relates to a disc discriminating method and an optical disc information reproducing apparatus wherein DVD-RAM which is DVD-RAM1 or DVD-RAM2 and DVDRW which is DVD−RW or DVD+RW which cannot be respectively determined based upon distance from the surface of a disc to the recording face, the number of recording faces and the reflectance can be discriminated. In case an optical disc is DVD-RAM or DVDRW, the amplitude of a push-pull tracking error signal is measured by a microcomputer in a state in which servo control is executed based upon a focus error signal. Determination is performed based upon the amplitude of the push-pull tracking error signal, when the amplitude of the push-pull tracking error signal is larger than a predetermined value, the optical disc is judged as DVD-RAM and when the amplitude is smaller than the predetermined value, the optical disc is judged as DVDRW.

摘要翻译： 本发明涉及一种光盘鉴别方法和光盘信息再现装置，其中DVD-RAM1是DVD-RAM1或DVD-RAM2，DVDRW是DVD-RW或DVD + RW，它们不能根据与表面的距离分别确定 的光盘到记录面，可以区分记录面的数量和反射率。 在光盘是DVD-RAM或DVDRW的情况下，在基于聚焦误差信号执行伺服控制的状态下，微计算机测量推挽跟踪误差信号的幅度。 基于推挽跟踪误差信号的幅度进行判定，当推挽跟踪误差信号的振幅大于预定值时，将光盘判断为DVD-RAM，当幅度小于 该预定值，光盘被判定为DVDRW。

公开(公告)号：US07406014B2

公开(公告)日：2008-07-29

申请号：US10960211

申请日：2004-10-06

申请人： Kazuhiko Ono ,  Hirotoshi Fukuda ,  Takeshi Ikeda

发明人： Kazuhiko Ono ,  Hirotoshi Fukuda ,  Takeshi Ikeda

IPC分类号： G11B27/36

CPC分类号： G11B19/12 ,  G11B7/0053 ,  G11B7/0945 ,  G11B2007/0006 ,  G11B2007/0013

摘要： The invention relates to a disc discriminating method and an optical disc information reproducing apparatus wherein DVD-RAM which is DVD-RAM1 or DVD-RAM2 and DVDRW which is DVD-RW or DVD+RW which cannot be respectively determined based upon distance from the surface of a disc to the recording face, the number of recording faces and the reflectance can be discriminated. In case an optical disc is DVD-RAM or DVDRW, the amplitude of a push-pull tracking error signal is measured by a microcomputer in a state in which servo control is executed based upon a focus error signal. Determination is performed based upon the amplitude of the push-pull tracking error signal, when the amplitude of the push-pull tracking error signal is larger than a predetermined value, the optical disc is judged as DVD-RAM and when the amplitude is smaller than the predetermined value, the optical disc is judged as DVDRW.

摘要翻译： 本发明涉及一种光盘识别方法和光盘信息再现装置，其中DVD-RAM1是DVD-RAM1或DVD-RAM2，DVDRW是DVD-RW或DVD + RW，它们不能根据与表面的距离分别确定 的光盘到记录面，可以区分记录面的数量和反射率。 在光盘是DVD-RAM或DVDRW的情况下，在基于聚焦误差信号执行伺服控制的状态下，微计算机测量推挽跟踪误差信号的幅度。 基于推挽跟踪误差信号的幅度进行判定，当推挽跟踪误差信号的振幅大于预定值时，将光盘判断为DVD-RAM，当幅度小于 该预定值，光盘被判定为DVDRW。

公开(公告)号：US20050047300A1

公开(公告)日：2005-03-03

申请号：US10960211

申请日：2004-10-06

申请人： Kazuhiko Ono ,  Hirotoshi Fukuda ,  Takeshi Ikeda

发明人： Kazuhiko Ono ,  Hirotoshi Fukuda ,  Takeshi Ikeda

IPC分类号： G11B19/12 ,  G11B5/09 ,  G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/085 ,  G11B7/09

CPC分类号： G11B19/12 ,  G11B7/0053 ,  G11B7/0945 ,  G11B2007/0006 ,  G11B2007/0013

摘要： The invention relates to a disc discriminating method and an optical disc information reproducing apparatus wherein DVD-RAM which is DVD-RAM1 or DVD-RAM2 and DVDRW which is DVD-RW or DVD+RW which cannot be respectively determined based upon distance from the surface of a disc to the recording face, the number of recording faces and the reflectance can be discriminated. In case an optical disc is DVD-RAM or DVDRW, the amplitude of a push-pull tracking error signal is measured by a microcomputer in a state in which servo control is executed based upon a focus error signal. Determination is performed based upon the amplitude of the push-pull tracking error signal, when the amplitude of the push-pull tracking error signal is larger than a predetermined value, the optical disc is judged as DVD-RAM and when the amplitude is smaller than the predetermined value, the optical disc is judged as DVDRW.

摘要翻译： 本发明涉及一种光盘鉴别方法和光盘信息再现装置，其中DVD-RAM1是DVD-RAM1或DVD-RAM2，DVDRW是DVD-RW或DVD + RW，它们不能根据与表面的距离分别确定 的光盘到记录面，可以区分记录面的数量和反射率。 在光盘是DVD-RAM或DVDRW的情况下，在基于聚焦误差信号执行伺服控制的状态下，微计算机测量推挽跟踪误差信号的幅度。 基于推挽跟踪误差信号的幅度进行判定，当推挽跟踪误差信号的振幅大于预定值时，将光盘判断为DVD-RAM，当幅度小于 该预定值，光盘被判定为DVDRW。

公开(公告)号：US20100332695A1

公开(公告)日：2010-12-30

申请号：US12769337

申请日：2010-04-28

申请人： Hirotoshi Fukuda ,  Junichi Iida ,  Masato Sano ,  Toshinori Arai

发明人： Hirotoshi Fukuda ,  Junichi Iida ,  Masato Sano ,  Toshinori Arai

IPC分类号： G06F3/00 ,  G06F13/00

CPC分类号： H04B1/10 ,  G06F13/4072

摘要： Proposed is a highly reliable information detecting apparatus and method. In an information detecting apparatus and method for detecting transmission information a transmission signal in which a burst period of transmitting a burst signal and a space period as a no-signal period are repeated in a pattern according to the subject matter of the transmission information, whether the absolute value of a signal amplitude level of the transmission signal is not less than a first threshold is detected, whether the absolute value of a signal amplitude level of the transmission signal is not less than a second threshold is detected, and whether the amplitude level displacement of the transmission signal is based on noise or the reception of the transmission information is determined based on the detection results.

摘要翻译： 提出了一种高可靠性的信息检测装置和方法。 在用于检测发送信息的信息检测装置和方法中，根据发送信息的主题，重复发送突发信号和空间周期的突发周期作为无信号周期的发送信号，无论是否 检测发送信号的信号幅度电平的绝对值不小于第一阈值，检测发送信号的信号幅度电平的绝对值是否不小于第二阈值，以及幅度电平 发送信号的位移基于噪声，或者基于检测结果确定发送信息的接收。

公开(公告)号：US06445658B1

公开(公告)日：2002-09-03

申请号：US09992427

申请日：2001-11-26

申请人： Hirotoshi Fukuda ,  Kazunaga Narita ,  Kiyonobu Teramoto ,  Hirohito Ishibashi ,  Toshihiro Matsunaga ,  Masato Sano

发明人： Hirotoshi Fukuda ,  Kazunaga Narita ,  Kiyonobu Teramoto ,  Hirohito Ishibashi ,  Toshihiro Matsunaga ,  Masato Sano

IPC分类号： G11B700

CPC分类号： G11B7/0953 ,  G11B19/26 ,  H02J9/062 ,  H02M7/4807 ,  Y10T307/625

摘要： When a deviated gravity disc is reproduced at a higher rate with the disc reproducing apparatus, an excessive vibration is generated and this vibration gives adverse effect on the disc reproducing apparatus and peripheral components/apparatuses, and/or may represent an annoyance to a user. A vibration information detector for detecting vibration of the disc reproducing apparatus or a deviated gravity information detector for detecting amount of gravity deviation of disc is provided, and as a result of such detection of an imbalance (i.e., excessive vibration or mass eccentricity), and a reproducing rate switching control controls sets and limits the reproducing rate of the disc reproducing apparatus to a substitute speed which is lower or higher than a normal reproducing speed.

摘要翻译： 当利用盘重放装置以更高的速度重放偏重重力盘时，会产生过大的振动，并且该振动对盘重放装置和外围部件/装置产生不利影响，和/或可能表示对使用者的烦恼。 提供了用于检测盘再现装置的振动的振动信息检测器或用于检测盘的重力偏差量的偏离重力信息检测器，并且作为这种检测不平衡（即，过度振动或质量偏心）的结果，以及 再现速率切换控制对盘重放装置的重放速度进行控制，并将其再现速度限制在低于或高于正常重放速度的替代速度。

公开(公告)号：US20100329391A1

公开(公告)日：2010-12-30

申请号：US12769351

申请日：2010-04-28

申请人： Hirotoshi Fukuda ,  Junichi Iida ,  Masato Sano ,  Toshinori Arai

发明人： Hirotoshi Fukuda ,  Junichi Iida ,  Masato Sano ,  Toshinori Arai

IPC分类号： H04L25/06

CPC分类号： H03G3/342

摘要： Proposed are a highly reliable information detecting apparatus and an information detecting method. This information detecting apparatus includes a high pass filter unit configured in a manner of being able to freely change a time constant and for extracting a high frequency content of the communication signal, a squelch detection unit for detecting a region in which a signal level of the high frequency component of the communication signal exceeds a predetermined squelch detection threshold, an information detection unit for detecting the information superposed on the communication signal based on a detection output of the squelch detection unit, a DC fluctuation detection unit for detecting a level fluctuation of a DC component of the communication signal, a control unit for controlling the high pass filter to lower the time constant of the high pass filter unit when the level fluctuation of the DC component of the communication signal is detected by the DC fluctuation detection unit, and a mask unit for masking the detection output of the squelch detection unit so as to make it appear that the squelch detection unit has not detected a region exceeding the squelch detection threshold while the control unit is lowering the time constant of the high pass filter unit.

摘要翻译： 提出了一种高可靠性的信息检测装置和信息检测方法。 该信息检测装置包括高通滤波器单元，其被配置为能够自由地改变时间常数并提取通信信号的高频内容;静噪检测单元，用于检测其中的信号电平 通信信号的高频分量超过预定的静噪检测阈值，用于基于静噪检测单元的检测输出检测叠加在通信信号上的信息的信息检测单元，用于检测静噪检测单元的电平波动的DC变动检测单元 DC分量，控制单元，用于当由直流波动检测单元检测到通信信号的直流分量的电平波动时，控制高通滤波器以降低高通滤波器单元的时间常数;以及 掩模单元，用于屏蔽静噪检测单元的检测输出，以使其成为ap 在控制单元降低高通滤波器单元的时间常数的同时，静噪检测单元未检测到超过静噪检测阈值的区域。

公开(公告)号：US06631105B1

公开(公告)日：2003-10-07

申请号：US09558157

申请日：2000-04-26

申请人： Hirotoshi Fukuda ,  Kazunaga Narita ,  Kiyonobu Teramoto ,  Hirohito Ishibashi ,  Toshihiro Matsunaga ,  Masato Sano

发明人： Hirotoshi Fukuda ,  Kazunaga Narita ,  Kiyonobu Teramoto ,  Hirohito Ishibashi ,  Toshihiro Matsunaga ,  Masato Sano

IPC分类号： G11B700

CPC分类号： G11B7/0953 ,  G11B19/26

摘要： When a deviated gravity disc is reproduced at a higher rate with the disc reproducing apparatus, an excessive vibration is generated and this vibration gives adverse effect on the disc reproducing apparatus and peripheral components/apparatuses, and/or may represent an annoyance to a user. A vibration information detector for detecting vibration of the disc reproducing apparatus or a deviated gravity information detector for detecting amount of gravity deviation of disc is provided, and as a result of such detection of an imbalance (i.e., excessive vibration or mass eccentricity), and a reproducing rate switching control controls sets and limits the reproducing rate of the disc reproducing apparatus to a substitute speed which is lower or higher than a normal reproducing speed.

公开(公告)号：US08179148B2

公开(公告)日：2012-05-15

申请号：US12769337

申请日：2010-04-28

申请人： Hirotoshi Fukuda ,  Junichi Iida ,  Masato Sano ,  Toshinori Arai

发明人： Hirotoshi Fukuda ,  Junichi Iida ,  Masato Sano ,  Toshinori Arai

IPC分类号： G01R23/20 ,  H04B15/00

CPC分类号： H04B1/10 ,  G06F13/4072

摘要： Proposed is a highly reliable information detecting apparatus and method. In an information detecting apparatus and method for detecting transmission information a transmission signal in which a burst period of transmitting a burst signal and a space period as a no-signal period are repeated in a pattern according to the subject matter of the transmission information, whether the absolute value of a signal amplitude level of the transmission signal is not less than a first threshold is detected, whether the absolute value of a signal amplitude level of the transmission signal is not less than a second threshold is detected, and whether the amplitude level displacement of the transmission signal is based on noise or the reception of the transmission information is determined based on the detection results.

摘要翻译： 提出了一种高可靠性的信息检测装置和方法。 在用于检测发送信息的信息检测装置和方法中，根据发送信息的主题，重复发送突发信号和空间周期的突发周期作为无信号周期的发送信号，无论是否 检测发送信号的信号幅度电平的绝对值不小于第一阈值，检测发送信号的信号幅度电平的绝对值是否不小于第二阈值，以及幅度电平 发送信号的位移基于噪声，或者基于检测结果确定发送信息的接收。

公开(公告)号：US20090251088A1

公开(公告)日：2009-10-08

申请号：US12419537

申请日：2009-04-07

申请人： Hirotoshi Fukuda ,  Junichi Iida

发明人： Hirotoshi Fukuda ,  Junichi Iida

IPC分类号： H02P6/14

CPC分类号： H03K17/663 ,  H02P7/04 ,  H03K17/08146

摘要： A motor driving circuit includes at least one set of switching elements, each set of switching elements being two switching elements connected in series to each other, and a diode connected in parallel with one of the two switching elements connected on a power source side, a terminal of a motor to be driven being connected to a junction point between the two switching elements. A voltage transfer element is provided for transferring, from the junction point between the two switching elements, a voltage of a counter electromotive force generated at the motor, to an input end of the other of the two switching elements connected on a ground side.

摘要翻译： 电动机驱动电路包括至少一组开关元件，每组开关元件是彼此串联连接的两个开关元件，以及连接在电源侧的两个开关元件中的一个并联连接的二极管， 要驱动的电动机的端子连接到两个开关元件之间的接合点。 提供电压传递元件，用于从两个开关元件之间的接合点将在电动机处产生的反电动势的电压传送到在接地侧连接的两个开关元件中的另一个的输入端。

公开(公告)号：US08080959B2

公开(公告)日：2011-12-20

申请号：US12419537

申请日：2009-04-07

申请人： Hirotoshi Fukuda ,  Junichi Iida

发明人： Hirotoshi Fukuda ,  Junichi Iida

IPC分类号： H02P6/00

CPC分类号： H03K17/663 ,  H02P7/04 ,  H03K17/08146

摘要： A motor driving circuit includes at least one set of switching elements, each set of switching elements being two switching elements connected in series to each other, and a diode connected in parallel with one of the two switching elements connected on a power source side, a terminal of a motor to be driven being connected to a junction point between the two switching elements. A voltage transfer element is provided for transferring, from the junction point between the two switching elements, a voltage of a counter electromotive force generated at the motor, to an input end of the other of the two switching elements connected on a ground side.

摘要翻译： 电动机驱动电路包括至少一组开关元件，每组开关元件是彼此串联连接的两个开关元件，以及连接在电源侧的两个开关元件中的一个并联连接的二极管， 要驱动的电动机的端子连接到两个开关元件之间的接合点。 提供电压传递元件，用于从两个开关元件之间的接合点将在电动机处产生的反电动势的电压传送到在接地侧连接的两个开关元件中的另一个的输入端。