公开(公告)号：US08451698B2

公开(公告)日：2013-05-28

申请号：US12801260

申请日：2010-06-01

申请人： Nobuyuki Asai ,  Nobuyoshi Kobayashi ,  Yuji Gendai ,  Kazumasa Nishimoto ,  Masaaki Ishihara ,  Satoshi Kato

发明人： Nobuyuki Asai ,  Nobuyoshi Kobayashi ,  Yuji Gendai ,  Kazumasa Nishimoto ,  Masaaki Ishihara ,  Satoshi Kato

IPC分类号： G11B7/00 ,  G11B5/09 ,  G11B27/36

CPC分类号： G11B7/0945 ,  G11B7/0941 ,  G11B2007/0006

摘要： An optical disk reproducing device includes: a signal reproducing section configured to read and decode information recorded on an optical disk by an optical pickup unit, and reproduce the information, wherein the signal reproducing section includes a gain controlled amplifier circuit configured to amplify an radio frequency signal generated from a light receiving element, an automatic gain control circuit configured to control a gain of the gain controlled amplifier circuit, and a signal processing section configured to derive a part of an automatic gain control value generated in the automatic gain control circuit, and generate a control signal for adjusting one of an optical system path and a detection system path for controlling the optical pickup unit.

摘要翻译： 一种光盘再现装置，包括：信号再现部，被配置为通过光学拾取单元读取和解码记录在光盘上的信息，并再现信息，其中信号再现部分包括增益控制放大器电路，其被配置为放大射频 从受光元件产生的信号，被配置为控制增益控制放大器电路的增益的自动增益控制电路，以及被配置为导出在自动增益控制电路中生成的自动增益控制值的一部分的信号处理部，以及 生成用于调整光学系统路径和检测系统路径之一以控制光学拾取单元的控制信号。

公开(公告)号：US20110019512A1

公开(公告)日：2011-01-27

申请号：US12801260

申请日：2010-06-01

申请人： Nobuyuki Asai ,  Nobuyoshi Kobayashi ,  Yuji Gendai ,  Kazumasa Nishimoto ,  Masaaki Ishihara ,  Satoshi Kato

发明人： Nobuyuki Asai ,  Nobuyoshi Kobayashi ,  Yuji Gendai ,  Kazumasa Nishimoto ,  Masaaki Ishihara ,  Satoshi Kato

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/0941 ,  G11B2007/0006

摘要： An optical disk reproducing device includes: a signal reproducing section configured to read and decode information recorded on an optical disk by an optical pickup unit, and reproduce the information, wherein the signal reproducing section includes a gain controlled amplifier circuit configured to amplify an radio frequency signal generated from a light receiving element, an automatic gain control circuit configured to control a gain of the gain controlled amplifier circuit, and a signal processing section configured to derive a part of an automatic gain control value generated in the automatic gain control circuit, and generate a control signal for adjusting one of an optical system path and a detection system path for controlling the optical pickup unit.

摘要翻译： 一种光盘再现装置，包括：信号再现部，被配置为通过光学拾取单元读取和解码记录在光盘上的信息，并再现信息，其中信号再现部分包括增益控制放大器电路，其被配置为放大射频 从受光元件产生的信号，被配置为控制增益控制放大器电路的增益的自动增益控制电路，以及被配置为导出在自动增益控制电路中生成的自动增益控制值的一部分的信号处理部，以及 生成用于调整光学系统路径和检测系统路径之一以控制光学拾取单元的控制信号。

公开(公告)号：US07693246B2

公开(公告)日：2010-04-06

申请号：US11439123

申请日：2006-05-24

申请人： Tomohiro Ohama ,  Junkichi Sugita ,  Nobuyuki Asai

发明人： Tomohiro Ohama ,  Junkichi Sugita ,  Nobuyuki Asai

IPC分类号： H04L7/00 ,  H03D3/24 ,  G11B15/00

CPC分类号： H04L7/04 ,  H03L7/093 ,  H04L2027/0016 ,  H04L2027/0095

摘要： A frequency control device capable of detecting a frame sync pattern and generating a frequency information accurately even if a reproduction signal is not zero-crossed, and an information reproduction apparatus having the same, which includes an oscillation circuit outputting a clock having a frequency corresponding to a control signal; a converter sampling an input analog signal having a predetermined pattern based on the clock and converting the same to a digital signal; and a frequency detection device detecting an object to be a sync pattern from a changing trend of the digital signal, generating a frequency information for controlling a reproduction clock based on the detected object to be the sync pattern, and outputting the same as the control signal to the oscillation circuit.

摘要翻译： 一种频率控制装置，其能够检测帧同步码型，并且即使再现信号不是零交叉也能准确地产生频率信息，以及具有该频率控制装置的信息再现装置，包括：振荡电路，输出具有对应于 控制信号; 转换器基于时钟对具有预定模式的输入模拟信号进行采样并将其转换为数字信号; 以及频率检测装置，根据数字信号的变化趋势来检测作为同步模式的对象，根据检测对象产生用于控制再生时钟的频率信息为同步模式，并将其输出为控制信号 到振荡电路。

公开(公告)号：US20060274864A1

公开(公告)日：2006-12-07

申请号：US11439123

申请日：2006-05-24

申请人： Tomohiro Ohama ,  Junkichi Sugita ,  Nobuyuki Asai

发明人： Tomohiro Ohama ,  Junkichi Sugita ,  Nobuyuki Asai

IPC分类号： H04L27/06

CPC分类号： H04L7/04 ,  H03L7/093 ,  H04L2027/0016 ,  H04L2027/0095

摘要： A frequency control device capable of detecting a frame sync pattern and generating a frequency information accurately even if a reproduction signal is not zero-crossed, and an information reproduction apparatus having the same, which includes an oscillation circuit outputting a clock having a frequency corresponding to a control signal; a converter sampling an input analog signal having a predetermined pattern based on the clock and converting the same to a digital signal; and a frequency detection device detecting an object to be a sync pattern from a changing trend of the digital signal, generating a frequency information for controlling a reproduction clock based on the detected object to be the sync pattern, and outputting the same as the control signal to the oscillation circuit.

摘要翻译： 一种频率控制装置，其能够检测帧同步码型，并且即使再现信号不是零交叉也能准确地产生频率信息，以及具有该频率控制装置的信息再现装置，包括：振荡电路，输出具有对应于 控制信号; 转换器基于时钟对具有预定模式的输入模拟信号进行采样并将其转换为数字信号; 以及频率检测装置，根据数字信号的变化趋势来检测作为同步模式的对象，根据检测对象产生用于控制再生时钟的频率信息为同步模式，并将其输出为控制信号 到振荡电路。

公开(公告)号：USPP13562P2

公开(公告)日：2003-02-18

申请号：US09542140

申请日：2000-04-04

申请人： Nobuyuki Asai

发明人： Nobuyuki Asai

IPC分类号： A01H500

CPC分类号： A01H5/02

摘要： A new and distinct variety of Dendrobium Plant named Stardust ‘Firebird’, is particularly characterized by its pure bright orange sepal and petal color and lip with bright yellow-orange and dark orange red checkered pattern, its economical propagation via tissue culture, its spring bloom and its small plant size which makes it suitable for packaging and shipment.

摘要翻译： 名为Stardust“Firebird”的新的独特品种的石斛植物，其特征是其纯净的明亮的橙色萼片和花瓣的颜色和唇部具有明亮的黄橙色和深橙色红色格纹图案，其经过组织培养的经济传播，其春天绽放 其小厂房尺寸使其适合包装和装运。

公开(公告)号：US6081492A

公开(公告)日：2000-06-27

申请号：US42040

申请日：1998-03-13

申请人： Nobuyuki Asai ,  Shinobu Nakamura

发明人： Nobuyuki Asai ,  Shinobu Nakamura

IPC分类号： G11B7/0037 ,  G11B7/085 ,  G11B19/28 ,  G11B21/08 ,  G11B27/10 ,  G11B27/36 ,  G11B5/09

CPC分类号： G11B21/083 ,  G11B19/28 ,  G11B27/105 ,  G11B7/0037 ,  G11B7/08505

摘要： A disc reproduction device, in which at the time of normal reproduction, a rotational speed of a spindle is detected based on a reproduction signal from the disc by a rotational speed counting circuit, a control signal that makes a speed error with respect to a reference speed zero is given to a first VCO as the control voltage thereof, a reproduction clock is generated while controlling the frequency and phase at a digital PLL circuit by using the oscillation output thereof as the reference frequency of the first PLL circuit containing a second VCO and in which, at the time of access, the control signal to the first VCO is switched to the output signal of the phase comparator by the switch circuit under the control of the controller and a multiple PLL circuit containing the first VCO, phase comparator, LPF, and so forth, is constituted to make the oscillation frequency of the first VCO track the reproduction speed at the destination of access predicted based on the access information by the controller. As a result, the access time can be reduced.

摘要翻译： 基于通过转速计数电路来自盘的再现信号，检测正常再现时的主轴转速的盘再现装置，相对于参考值产生速度误差的控制信号 给第一VCO提供速度零作为其控制电压，在通过使用其振荡输出作为包含第二VCO的第一PLL电路的参考频率来控制数字PLL电路的频率和相位时产生再现时钟，并且 其中在访问时，在控制器的控制下，通过开关电路将第一VCO的控制信号切换到相位比较器的输出信号，以及包含第一个VCO，相位比较器，LPF的多个PLL电路 构成为使得第一VCO轨道的振荡频率基于访问信息来预测的访问目的地的再现速度 由控制器。 结果，可以减少访问时间。