公开(公告)号：US20130308434A1

公开(公告)日：2013-11-21

申请号：US13981150

申请日：2012-07-20

申请人： Emi Kitano ,  Harumitsu Miyashita ,  Ryoji Hirose

发明人： Emi Kitano ,  Harumitsu Miyashita ,  Ryoji Hirose

IPC分类号： G11B20/18

CPC分类号： G11B20/1879 ,  G11B7/004 ,  G11B7/00458 ,  G11B7/085 ,  G11B7/12 ,  G11B7/14

摘要： This optical read/write apparatus has first and second optical heads 2a, 2b and includes location control sections 4a, 4b which make the relative arrangement of the first and second optical heads 2a, 2b variable according to either the environmental temperature or from one medium to another. The first optical head 2a performs a write operation to record a mark on an optical storage medium 1, and the second optical head 2b reads the information that has been written by scanning the recorded mark. The apparatus further includes a nonvolatile memory which saves the relative arrangement of the first and second optical heads 2a and 2b either on an environmental temperature basis or on a medium by medium basis.

摘要翻译： 这种光学读/写装置具有第一和第二光头2a，2b，并且包括使第一和第二光头2a，2b相对布置的位置控制部分4a，4b根据环境温度或从一个介质到 另一个。 第一光学头2a执行写入操作以在光学存储介质1上记录标记，并且第二光学头2b读取通过扫描记录标记而写入的信息。 该装置还包括非易失性存储器，其在第一和第二光学头2a和2b的相对布置方面基于环境温度或基于介质的介质。

公开(公告)号：US08848500B2

公开(公告)日：2014-09-30

申请号：US13981150

申请日：2012-07-20

申请人： Emi Kitano ,  Harumitsu Miyashita ,  Ryoji Hirose

发明人： Emi Kitano ,  Harumitsu Miyashita ,  Ryoji Hirose

IPC分类号： G11B20/18 ,  G11B7/12 ,  G11B7/004 ,  G11B7/085

CPC分类号： G11B20/1879 ,  G11B7/004 ,  G11B7/00458 ,  G11B7/085 ,  G11B7/12 ,  G11B7/14

摘要： This optical read/write apparatus has first and second optical heads 2a, 2b and includes location control sections 4a, 4b which make the relative arrangement of the first and second optical heads 2a, 2b variable according to either the environmental temperature or from one medium to another. The first optical head 2a performs a write operation to record a mark on an optical storage medium 1, and the second optical head 2b reads the information that has been written by scanning the recorded mark. The apparatus further includes a nonvolatile memory which saves the relative arrangement of the first and second optical heads 2a and 2b either on an environmental temperature basis or on a medium by medium basis.

摘要翻译： 这种光学读/写装置具有第一和第二光头2a，2b，并且包括使第一和第二光头2a，2b相对布置的位置控制部分4a，4b根据环境温度或从一个介质到 另一个。 第一光学头2a执行写入操作以在光学存储介质1上记录标记，并且第二光学头2b读取通过扫描记录标记而写入的信息。 该装置还包括非易失性存储器，其在第一和第二光学头2a和2b的相对布置方面基于环境温度或基于介质的介质。

公开(公告)号：US20050105410A1

公开(公告)日：2005-05-19

申请号：US10986300

申请日：2004-11-12

申请人： Emi Kitano ,  Masayoshi Makamura ,  Yoshiyasu Nakayama ,  Yasuo Ueda

发明人： Emi Kitano ,  Masayoshi Makamura ,  Yoshiyasu Nakayama ,  Yasuo Ueda

IPC分类号： G11B5/58 ,  G11B7/00 ,  G11B7/085 ,  G11B7/09 ,  G11B7/12

CPC分类号： G11B7/121 ,  G11B7/08511 ,  G11B2007/0006

摘要： In an optical information reproduction apparatus having optical beam sources having at least two types of wavelengths, an object lens may be damaged by colliding with an information recording medium while driving a focus servo, which is caused by a fake signal generated due to an incompatibility of the wavelength in use with the information recording medium. To solve such a problem, in case the type of the information recording medium is unrecognizable and a focus servo is led in by using the optical beam source having the first wavelength, the focus servo is led in by using the second focus servo lead-in unit which is driven by an output of a near focus point detection unit during an operation of a second focus search unit which renders the object lens move away from the information recording medium.

摘要翻译： 在具有至少两种波长的光束源的光学信息再现装置中，在由于由于不兼容性产生的假信号而导致的驱动聚焦伺服时，物镜可能与信息记录介质碰撞而损坏 与信息记录介质一起使用的波长。 为了解决这种问题，在信息记录介质的类型不可识别并且通过使用具有第一波长的光束源引导聚焦伺服的情况下，通过使用第二聚焦伺服引入来引导聚焦伺服 在第二焦点搜索单元的操作期间由近焦点检测单元的输出驱动的单元，其使得物镜离开信息记录介质。

公开(公告)号：US07362667B2

公开(公告)日：2008-04-22

申请号：US10986300

申请日：2004-11-12

申请人： Emi Kitano ,  Masayoshi Nakamura ,  Yoshiyasu Nakayama ,  Yasuo Ueda

发明人： Emi Kitano ,  Masayoshi Nakamura ,  Yoshiyasu Nakayama ,  Yasuo Ueda

IPC分类号： G11B7/00

CPC分类号： G11B7/121 ,  G11B7/08511 ,  G11B2007/0006

摘要： In an optical information reproduction apparatus having optical beam sources having at least two types of wavelengths, an object lens may be damaged by colliding with an information recording medium while driving a focus servo, which is caused by a fake signal generated due to an incompatibility of the wavelength in use with the information recording medium. To solve such a problem, in case the type of the information recording medium is unrecognizable and a focus servo is led in by using the optical beam source having the first wavelength, the focus servo is led in by using the second focus servo lead-in unit which is driven by an output of a near focus point detection unit during an operation of a second focus search unit which renders the object lens move away from the information recording medium.

摘要翻译： 在具有至少两种波长的光束源的光学信息再现装置中，在由于由于不兼容性产生的假信号而导致的驱动聚焦伺服时，物镜可能与信息记录介质碰撞而损坏 与信息记录介质一起使用的波长。 为了解决这种问题，在信息记录介质的类型不可识别并且通过使用具有第一波长的光束源引导聚焦伺服的情况下，通过使用第二聚焦伺服引入来引导聚焦伺服 在第二焦点搜索单元的操作期间由近焦点检测单元的输出驱动的单元，其使得物镜离开信息记录介质。

公开(公告)号：US07075866B2

公开(公告)日：2006-07-11

申请号：US09986671

申请日：2001-11-09

申请人： Masayoshi Nakamura ,  Emi Kitano

发明人： Masayoshi Nakamura ,  Emi Kitano

IPC分类号： G11B5/09 ,  G11B7/005

CPC分类号： G11B20/1025 ,  G11B5/012 ,  G11B7/0053 ,  G11B11/10515 ,  G11B20/1403 ,  H03L7/087 ,  H03L7/0898 ,  H03L7/093 ,  H03L7/113

摘要： A clock extracting device of a disc reproducing apparatus includes an information read-out member for reading information signals from a disklike information recording medium; a voltage control oscillator; a phase comparator; a frequency comparator; a speed sensor for detecting the frequency of the output of the voltage control oscillator at a reference clock so as to output a speed signal; a gain command unit for designating a loop gain of a clock extracting circuit in accordance with the speed signal outputted from the speed sensor; a charge pump which discharges or draws electric current in accordance with outputs of the phase comparator and the frequency comparator and changes over an output current value in accordance with a gain command of the gain command unit; and a series circuit of a resistor and a capacitor, wherein the gain command unit issues the gain command such that the loop gain of the clock extracting circuit secures a desired operating point in accordance with a read rate of the information signals.

摘要翻译： 盘再现装置的时钟提取装置包括用于从盘状信息记录介质读取信息信号的信息读出部件; 压控振荡器; 相位比较器 频率比较器 速度传感器，用于在参考时钟处检测所述电压控制振荡器的输出频率，以便输出速度信号; 增益指令单元，用于根据从速度传感器输出的速度信号指定时钟提取电路的环路增益; 电荷泵，其根据相位比较器和频率比较器的输出放电或抽取电流，并根据增益指令单元的增益指令改变输出电流值; 以及电阻器和电容器的串联电路，其中所述增益命令单元发出所述增益命令，使得所述时钟提取电路的环路增益根据所述信息信号的读取速率来确保期望的工作点。