公开(公告)号：US20120026849A1

公开(公告)日：2012-02-02

申请号：US13271973

申请日：2011-10-12

申请人： Toru SASAI ,  Jun Kikuchi ,  Hirotsugu Taniguchi

发明人： Toru SASAI ,  Jun Kikuchi ,  Hirotsugu Taniguchi

IPC分类号： G11B7/00

CPC分类号： G11B7/0908 ,  G11B7/0941 ,  G11B7/0943

摘要： An optical disc device includes: a focus error signal generation section configured to generate a focus error signal based on reflected light from an optical disc; and a focus control section configured to generate a drive signal for focus control of an optical pickup from the focus error signal. The focus control section includes a filter adjustment portion configured to activate a filter adjustment signal when the absolute value of the focus error signal is equal to or more than an error threshold, a proportional term computing unit, an integral term computing unit configured to multiply the focus error signal by an integral gain and integrate the multiplied result, a differential term computing unit, and an adder configured to add up results of these computing units to be output as the drive signal. The integral term computing unit decreases the integral gain when the filter adjustment signal is active.

摘要翻译： 光盘装置包括：聚焦误差信号生成部，被配置为基于来自光盘的反射光产生聚焦误差信号; 以及焦点控制部，被配置为从聚焦误差信号产生用于光学拾取器的聚焦控制的驱动信号。 聚焦控制部分包括滤光器调节部分，被配置为当聚焦误差信号的绝对值等于或大于误差阈值时激活滤光器调节信号，比例项计算单元，积分项计算单元， 聚焦误差信号乘以积分增益并积分相乘结果，微分项计算单元和加法器，被配置为将要输出的这些计算单元的结果相加作为驱动信号。 当滤波器调整信号有效时，积分项计算单元降低积分增益。

公开(公告)号：US20060120252A1

公开(公告)日：2006-06-08

申请号：US10542342

申请日：2004-03-20

申请人： Yoshihiro Kanda ,  Takashige Hiratsuka ,  Minoru Ochiai ,  Jun Kikuchi

发明人： Yoshihiro Kanda ,  Takashige Hiratsuka ,  Minoru Ochiai ,  Jun Kikuchi

IPC分类号： G11B7/00

CPC分类号： G11B7/005 ,  G11B7/09

摘要： An optical disc device according to the present invention is provided with, as shown in FIGS. 1 and 2, a high frequency band processing circuit for removing low frequency components of signals outputted from plural photodetectors of a pickup, and generating various kinds of signals required for recording/playback of an optical disc by digital processing after performing AD conversion by a high-speed low-bit AD converter; and a low frequency band processing circuit for removing high frequency components of the signals outputted from the respective photodetectors of the pickup, and generating various kinds of signals required for recording/playback of an optical disc by digital processing after performing AD conversion by a low-speed high-bit time-division AD converter. Thereby, various kinds of signals required for recording/playback of an optical disc can be generated using a single circuit, whereby the product cost, power consumption, and circuit scale can be reduced.

摘要翻译： 根据本发明的光盘装置，如图1和图2所示。 如图1和图2所示，用于去除从拾取器的多个光电检测器输出的信号的低频分量的高频带处理电路，并且在执行AD转换之后通过数字处理产生用于记录/重放光盘所需的各种信号 低速AD转换器; 以及低频带处理电路，用于去除从拾取器的各个光电探测器输出的信号的高频分量，并且通过数字处理在通过低通滤波器执行AD转换之后产生用于记录/重放光盘所需的各种信号， 高速高分时分AD转换器。 因此，可以使用单个电路来生成光盘的记录/重放所需的各种信号，由此可以降低产品成本，功耗和电路规模。

公开(公告)号：US20050041542A1

公开(公告)日：2005-02-24

申请号：US10501360

申请日：2003-04-18

申请人： Kei Kobayashi ,  Jun Kikuchi

发明人： Kei Kobayashi ,  Jun Kikuchi

IPC分类号： G11B7/085 ,  G11B7/00

CPC分类号： G11B7/08505 ,  G11B7/08541

摘要： There is provided an optical disc device comprising a step number calculation means (110) for calculating the number of steps of a motor (106) on the basis of the target number of tracks required for traverse seek; a differential number calculation means (112) for calculating the number of differential tracks over which an objective lens should be shifted, on the basis of the target number of tracks and the number of steps; and a tracking jump control means (113) for driving an actuator (104) at track intervals by applying a control signal generated on the basis of the number of differential tracks, to an actuator driving circuit (114). After advancing a traverse (105) by driving the motor by the number of steps calculated by the step number calculation means, tracking-jump is carried out over the differential tracks to shift an objective lens (103).

摘要翻译： 提供了一种光盘装置，包括步数计算装置，用于基于横越寻道所需的目标轨迹数来计算电动机（106）的步数; 差分数计算装置，用于基于目标轨道数和步数来计算物镜应移动的差动磁道的数目; 以及跟踪跳跃控制装置，用于通过将基于差分磁道的数量产生的控制信号施加到致动器驱动电路（114），以跟踪间隔来驱动致动器（104）。 在通过以步数计算装置计算出的步数驱动马达来推进运动（105）之后，在差动轨道上执行跟踪跳跃以移动物镜（103）。

公开(公告)号：US06624644B2

公开(公告)日：2003-09-23

申请号：US09899375

申请日：2001-07-02

申请人： Akishige Ito ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Nobukazu Banjo ,  Sanjay Gupta ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Hakaru Kyuragi

发明人： Akishige Ito ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Nobukazu Banjo ,  Sanjay Gupta ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Hakaru Kyuragi

IPC分类号： G01R31308

CPC分类号： G01R15/247

摘要： An electro-optic probe has a laser diode for emitting a laser beam in accordance with a control signal from a measuring instrument main body, an electro-optic or magneto-optic element provided with a reflection film on an end surface thereof, a separator provided between the laser diode and electro-optic or magneto-optic element which is pervious the laser beam emitted from the laser diode and separates a beam reflected from the reflection film and two photodiodes which transform the beam reflected by the separator. A member of weak dielectric material, such as a glass plate, overlies the electro-optic or magneto-optic element at the end of the probe to protect the element, or the element is at the end of the probe and is exposed.

摘要翻译： 电光探头具有激光二极管，用于根据来自测量仪器主体的控制信号，在其端面上设置有反射膜的电光或磁光元件发射激光束，设置隔膜 在激光二极管和电光或者光电元件之间，其可透过从激光二极管发出的激光束并分离从反射膜反射的光束和两个光电二极管，这两个光电二极管转换由分离器反射的光束。 诸如玻璃板的弱介电材料的构件覆盖在探针末端处的电光学或磁光元件以保护元件，或者元件在探针的末端并暴露。

公开(公告)号：US06377036B1

公开(公告)日：2002-04-23

申请号：US09167307

申请日：1998-10-06

申请人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Kazuyoshi Matsuhiro

发明人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Kazuyoshi Matsuhiro

IPC分类号： G01R1324

CPC分类号： G01R13/0281

摘要： The present invention relates to an electro-optic sampling oscilloscope. The delay circuit in the electro-optic sampling oscilloscope comprises a delay time detecting circuit, a regulation time determining circuit, a counter circuit and a delay regulating circuit. The delay time detecting circuit detects in the trigger signal a value corresponding to the delay time of a reference clock from a reference clock generating circuit. The regulation time determining circuit determines a regulation time based on the value detected by the delay time detecting circuit so that the regulation time is an integer multiple of the reference clock. The counter circuit is triggered by the trigger signal to count the reference clock through a specific value. The delay regulating circuit employs a signal related to the regulation time from the regulation time determining circuit, to delay the signal output from the counter circuit by the regulation time.

摘要翻译： 本发明涉及电光采样示波器。 电光采样示波器中的延迟电路包括延迟时间检测电路，调节时间确定电路，计数器电路和延迟调节电路。 延迟时间检测电路在触发信号中检测与来自基准时钟发生电路的参考时钟的延迟时间对应的值。 调节时间确定电路基于由延迟时间检测电路检测的值来确定调节时间，使得调节时间是参考时钟的整数倍。 计数器电路由触发信号触发，通过特定值对参考时钟进行计数。 延迟调节电路采用与调节时间确定电路相关的调节时间的信号，延迟来自计数器电路的信号调节时间。

公开(公告)号：US06201235B1

公开(公告)日：2001-03-13

申请号：US09300287

申请日：1999-04-27

申请人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G01J142

CPC分类号： G01R13/347

摘要： An electro-optic sampling oscilloscope facilitates adjustment of signal-to-noise ratio caused by electrical, optical and temperature factors. The instrument includes: a light generation section for generation a reference laser beam; a crystal, exhibiting an electro-optic response behavior so as to receive the reference laser beam and to result in changing a refractive index in accordance with electrical field strength generated by target signal; a reflection mirror formed on a rear surface of the crystal for reflecting the reference laser beam that has passed through the crystal; an optical circuit for separating the reference laser beam reflected from the reflection mirror into a first signal light and a second signal light; a first photo-electric conversion section for converting the first signal light into first electrical signals; a second photo-electric conversion section for converting the second signal light into second electrical signals; a differential amplification section for differentially amplifying the first electrical signals and the second electrical signals, and for outputting differentially amplified signals as detection signals of the target signal; and a gain adjustment section for varying gains to adjust a signal-to-noise ratio while the reference laser beam is not being radiated into the crystal, so as to match strength levels of the first electrical signals and the second electrical signals in association with feedback signals of the target signal.

摘要翻译： 电光采样示波器有助于调整由电气，光学和温度因素引起的信噪比。 仪器包括：用于产生参考激光束的发光部分; 呈现电光响应行为以便接收参考激光束并导致根据由目标信号产生的电场强度改变折射率的晶体; 反射镜，其形成在晶体的后表面上，用于反射已经通过晶体的参考激光束; 用于将从反射镜反射的参考激光束分离成第一信号光和第二信号光的光学电路; 第一光电转换部分，用于将第一信号光转换成第一电信号; 第二光电转换部分，用于将第二信号光转换成第二电信号; 差分放大部分，用于差分放大第一电信号和第二电信号，并用于输出差分放大的信号作为目标信号的检测信号; 以及增益调整部分，用于在参考激光束不被辐射到晶体中时改变增益以调节信噪比，以便与反馈相关联地匹配第一电信号和第二电信号的强度电平 目标信号的信号。

公开(公告)号：US06087838A

公开(公告)日：2000-07-11

申请号：US189044

申请日：1998-11-09

申请人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G01R15/24 ,  G01R1/07 ,  G01R13/34 ,  G01R19/00 ,  G01R31/302 ,  H01L21/66 ,  G01R31/308

CPC分类号： G01R1/071

摘要： A signal processing circuit is provided for an electro-optic probe, which is used to perform testing of a printed-circuit board of high-speed processing. When laser beams are incident on the electro-optic probe which is brought into contact with the printed-circuit board, they are changed in polarization and are then converted to electric signals. The electric signals are amplified and are then subjected to analog-to-digital conversion to produce digital data. The laser beams (or optical pulses) are generated based on sampling pulses used for sampling of the analog-to-digital conversion. Herein, the sampling pulses are created based on a sweep signal and a step-like signal. The sweep signal increases in level with a certain slope and then decreases suddenly in one period of a trigger pulse signal. The step-like signal increases in level in a step-like manner, wherein it is increased by a predetermined level in response to each of the sampling pulses. A comparator produces a pulse signal consisting of pulses, each of which appears when the sweep signal coincides with the step-like signal in levels. Then, a mask circuit allows output of only the necessary pulses of the comparator as the sampling pulses. An image display circuit stores a plurality of digital data therein, which are then rearranged in an order so that an image representing a measurement result is displayed.

摘要翻译： 为电光探头提供信号处理电路，用于对高速处理的印刷电路板进行测试。 当激光束入射到与印刷电路板接触的电光探针上时，它们被改变为极化，然后被转换成电信号。 电信号被放大，然后进行模数转换以产生数字数据。 基于用于模数转换的采样的采样脉冲产生激光束（或光脉冲）。 这里，采样脉冲基于扫描信号和阶梯状信号产生。 扫描信号以一定的斜率增加，然后在触发脉冲信号的一个周期内突然减小。 阶梯状信号以阶梯式的方式增加，其中响应于每个采样脉冲增加预定电平。 比较器产生由脉冲组成的脉冲信号，当脉冲信号与阶梯状信号一致时，出现脉冲信号。 然后，掩模电路仅允许输出比较器的必要脉冲作为采样脉冲。 图像显示电路在其中存储多个数字数据，然后按顺序重新排列，以便显示表示测量结果的图像。

公开(公告)号：US08072858B2

公开(公告)日：2011-12-06

申请号：US12162196

申请日：2007-01-25

申请人： Kenji Fujiune ,  Jun Kikuchi

发明人： Kenji Fujiune ,  Jun Kikuchi

IPC分类号： G11B7/00

CPC分类号： G11B7/0953

摘要： A disk motor which rotationally drives an optical disk; a rotational phase detector which detects a rotational phase thereof; an optical head having a collecting lens which collects an optical bean; a light detector and an LE signal generator which detect a position of the collecting lens in the optical head as a position signal; an LE signal memory recorder and an LE signal memory which store, in synchronization with a rotational phase to be detected by the rotational phase detector, the positional signal from the LE signal generator; an LE signal memory regenerator which outputs as a correction signal, in synchronization with a rotational phase to be detected, the positional signal which has already been detected; a subtractor; an LE signal filter, a drive circuit and a Tk actuator which move the collecting lens using a signal from the subtractor; and a low pass filter which reduces a high-frequency component of the correction signal are provided.

摘要翻译： 旋转驱动光盘的盘马达; 检测其旋转相位的旋转相位检测器; 具有聚光透镜的光头; 光检测器和LE信号发生器，其检测光头中的聚光透镜的位置作为位置信号; LE信号存储器和LE信号存储器，其与由旋转相位检测器检测的转动相位同步地存储来自LE信号发生器的位置信号; LE信号存储器再生器，其与被检测的转动相位同步地输出已经被检测的位置信号作为校正信号; 减法者 LE信号滤波器，驱动电路和Tk致动器，其使用来自减法器的信号来移动收集透镜; 并且提供降低校正信号的高频分量的低通滤波器。

公开(公告)号：US07880553B2

公开(公告)日：2011-02-01

申请号：US12382348

申请日：2009-03-13

申请人： Jun Kikuchi ,  Toru Matsumoto ,  Kaoru Kanehachi

发明人： Jun Kikuchi ,  Toru Matsumoto ,  Kaoru Kanehachi

IPC分类号： H03L1/00

CPC分类号： H03B5/04 ,  H03B5/368 ,  H03L1/025 ,  H03L3/00

摘要： An oscillation section for which an output frequency is controlled based on a control signal depending on an ambient temperature; a temperature compensation circuit for supplying the control signal to this oscillation section; and a switching switch circuit consisting of an output buffer and a temperature sensor output switch for which ON and OFF are controlled so that any one of an oscillation output from the oscillation section and a temperature sensor output from the temperature compensation circuit is outputted. The temperature sensor output switch is structured so that transfer gate switches are connected in a two-stage serial manner and a third switch connected to a fixed potential is sandwiched between these connection points. When an oscillation output is outputted, the transfer gate switches are OFF and the third switch is ON and, when a temperature sensor output is outputted, the transfer gate switches are ON and the third switch is OFF.

摘要翻译： 基于根据环境温度的控制信号控制输出频率的振荡部分; 温度补偿电路，用于向该振荡部提供控制信号; 以及由输出缓冲器和控制ON和OFF的温度传感器输出开关组成的切换开关电路，以便输出从振荡部分输出的振荡和从温度补偿电路输出的温度传感器中的任何一个。 温度传感器输出开关的结构使得传输门开关以两级串联方式连接，并且连接到固定电位的第三开关夹在这些连接点之间。 当输出振荡输出时，传输门开关为OFF，第三开关为ON，输出温度传感器输出时，传输门开关为ON，第三开关为OFF。

公开(公告)号：US20090231049A1

公开(公告)日：2009-09-17

申请号：US12382348

申请日：2009-03-13

申请人： Jun Kikuchi ,  Toru Matsumoto ,  Kaoru Kanehachi

发明人： Jun Kikuchi ,  Toru Matsumoto ,  Kaoru Kanehachi

IPC分类号： G01K7/00

CPC分类号： H03B5/04 ,  H03B5/368 ,  H03L1/025 ,  H03L3/00

摘要： An oscillation circuit of the present invention includes: an oscillation section for which an output frequency is controlled based on a control signal depending on an ambient temperature; a temperature compensation circuit for supplying the control signal to this oscillation section; and a switching switch circuit consisting of an output buffer and a temperature sensor output switch for which ON and OFF are controlled so that any one of an oscillation output from the oscillation section and a temperature sensor output from the temperature compensation circuit is outputted. The temperature sensor output switch is structured so that transfer gate switches are connected in a two-stage serial manner and a third switch connected to a fixed potential is sandwiched between these connection points. When an oscillation output is outputted, the transfer gate switches are OFF and the third switch is ON and, when a temperature sensor output is outputted, the transfer gate switches are ON and the third switch is OFF.

摘要翻译： 本发明的振荡电路包括：根据环境温度根据控制信号控制输出频率的振荡部分; 温度补偿电路，用于向该振荡部提供控制信号; 以及由输出缓冲器和控制ON和OFF的温度传感器输出开关组成的切换开关电路，以便输出从振荡部分输出的振荡和从温度补偿电路输出的温度传感器中的任何一个。 温度传感器输出开关的结构使得传输门开关以两级串联方式连接，并且连接到固定电位的第三开关夹在这些连接点之间。 当输出振荡输出时，传输门开关为OFF，第三开关为ON，输出温度传感器输出时，传输门开关为ON，第三开关为OFF。