公开(公告)号：US09143110B2

公开(公告)日：2015-09-22

申请号：US14114519

申请日：2012-06-29

申请人： Kimikazu Sano ,  Hiroyuki Fukuyama ,  Makoto Nakamura ,  Hideyuki Nosaka ,  Miwa Mutoh ,  Koichi Murata

发明人： Kimikazu Sano ,  Hiroyuki Fukuyama ,  Makoto Nakamura ,  Hideyuki Nosaka ,  Miwa Mutoh ,  Koichi Murata

IPC分类号： H03G3/10 ,  H03F1/08 ,  H03G3/30

CPC分类号： H03G3/30 ,  H03G3/3084

摘要： An automatic gain control circuit (5a) includes a peak detector circuit (10) that detects the peak voltage of the output signal from a variable gain amplifier (3), an average value detection and output amplitude setting circuit (11) that detects the average voltage of the output signals from the variable gain amplifier (3) and adds a voltage ½ the desired output amplitude of the variable gain amplifier (3) to the average voltage, and a high gain amplifier (12) that amplifies the difference between the output voltage of the peak detector circuit (10) and the output voltage of the average value detection and output amplitude setting circuit (11) and controls the gain of the variable gain amplifier (3) using the amplification result as a gain control signal. The peak detector circuit (10) includes transistors (Q1, Q2, Q3), a current source (I1), and a filter circuit. The filter circuit includes a series connection of a resistor (Ra) and a capacitor (C1).

摘要翻译： 自动增益控制电路（5a）包括检测来自可变增益放大器（3）的输出信号的峰值电压的峰值检测电路（10），检测平均值的平均值检测和输出幅度设定电路（11） 来自可变增益放大器（3）的输出信号的电压，并将可变增益放大器（3）的期望输出幅度的电压½加到平均电压上;以及高增益放大器（12），放大输出 峰值检测器电路（10）的电压和平均值检测和输出幅度设置电路（11）的输出电压，并且使用放大结果来控制可变增益放大器（3）的增益作为增益控制信号。 峰值检测器电路（10）包括晶体管（Q1，Q2，Q3），电流源（I1）和滤波器电路。 滤波电路包括电阻（Ra）和电容器（C1）的串联连接。

公开(公告)号：US08687968B2

公开(公告)日：2014-04-01

申请号：US13059226

申请日：2009-08-12

申请人： Hideyuki Nosaka ,  Munehiko Nagatani ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata ,  Kiyomitsu Onodera ,  Takatomo Enoki

发明人： Hideyuki Nosaka ,  Munehiko Nagatani ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata ,  Kiyomitsu Onodera ,  Takatomo Enoki

IPC分类号： H04B10/00

CPC分类号： H03H11/20 ,  H03H2007/0192 ,  H03H2011/0494 ,  H04B10/505 ,  H04B2210/517

摘要： A vector sum phase shifter includes a 90° phase shifter (1) which generates an in-phase signal (VINI) and a quadrature signal (VINQ) from an input signal (VIN), a four-quadrant multiplier (2I) which changes the amplitude of the in-phase signal (VINI) based on a control signal (CI), a four-quadrant multiplier (2Q) which changes the amplitude of the quadrature signal (VINQ) based on a control signal (CQ), a combiner (3) which combines the in-phase signal (VINI) and the quadrature signal (VINQ), and a control circuit (4). The control circuit (4) includes a voltage generator which generates a reference voltage, and a differential amplifier which outputs the difference signal between a control voltage (VC) and the reference voltage as the control signal (CI, CQ). The differential amplifier performs an analog operation of converting the control voltage (VC) into the control signal (CI, CQ) similar to a sine wave or a cosine wave.

摘要翻译： 矢量和移相器包括从输入信号（VIN）产生同相信号（VINI）和正交信号（VINQ）的90°移相器（1），四象限乘法器（2I），其改变 基于控制信号（CI）的同相信号（VINI）的幅度，基于控制信号（CQ）改变正交信号（VINQ）的幅度的四象限乘法器（2Q），组合器 3），其组合了同相信号（VINI）和正交信号（VINQ），以及控制电路（4）。 控制电路（4）包括产生参考电压的电压发生器和输出控制电压（VC）和基准电压之间的差分信号作为控制信号（CI，CQ）的差分放大器。 差分放大器进行与正弦波或余弦波相似的将控制电压（VC）转换为控制信号（CI，CQ）的模拟操作。

公开(公告)号：US20120326782A1

公开(公告)日：2012-12-27

申请号：US13527512

申请日：2012-06-19

申请人： Kimikazu Sano ,  Hiroyuki Fukuyama ,  Hideyuki Nosaka ,  Makoto Nakamura ,  Koichi Murata ,  Masatoshi Tobayashi ,  Yasunobu Inabe ,  Eisuke Tsuchiya

发明人： Kimikazu Sano ,  Hiroyuki Fukuyama ,  Hideyuki Nosaka ,  Makoto Nakamura ,  Koichi Murata ,  Masatoshi Tobayashi ,  Yasunobu Inabe ,  Eisuke Tsuchiya

IPC分类号： H03G3/20

CPC分类号： H03G1/0023

摘要： In an automatic gain control circuit, a peak detection circuit detects and outputs the peak voltage of an output signal from a variable gain circuit. An average value detection/output amplitude setting circuit detects the average value voltage of an output signal from the variable gain circuit, and outputs a calculated voltage. An amplification circuit controls the gain of the variable gain circuit by amplifying the difference between the output voltages of the peak detection circuit and average value detection/output amplitude setting circuit. The number of base-emitter junctions of transistors on a path in the peak detection circuit from input ports which receive output signals from the variable gain circuit to an output port which outputs a voltage to the amplification circuit is equal to the number of base-emitter junctions of transistors on a path in the average value detection/output amplitude setting circuit.

摘要翻译： 在自动增益控制电路中，峰值检测电路检测并输出来自可变增益电路的输出信号的峰值电压。 平均值检测/输出振幅设定电路检测来自可变增益电路的输出信号的平均值电压，并输出计算出的电压。 放大电路通过放大峰值检测电路的输出电压和平均值检测/输出幅度设定电路之间的差来控制可变增益电路的增益。 从输入端口接收峰值检测电路中的路径上的晶体管的基极 - 发射极结数量，该输入端口从可变增益电路接收输出到放大电路的电压的输出端口等于基极 - 发射极 在平均值检测/输出幅度设置电路中的路径上的晶体管的结。

公开(公告)号：US20120319766A1

公开(公告)日：2012-12-20

申请号：US13527510

申请日：2012-06-19

申请人： Kimikazu Sano ,  Hiroyuki Fukuyama ,  Hideyuki Nosaka ,  Makoto Nakamura ,  Koichi Murata ,  Masatoshi Tobayashi ,  Eisuke Tsuchiya

发明人： Kimikazu Sano ,  Hiroyuki Fukuyama ,  Hideyuki Nosaka ,  Makoto Nakamura ,  Koichi Murata ,  Masatoshi Tobayashi ,  Eisuke Tsuchiya

IPC分类号： G05F3/02

CPC分类号： H03K19/017545

摘要： In a signal output circuit, an input buffer externally receives a single-phase switching instruction signal to switch a state of the output circuit a shutdown disable state or a shutdown enable state, and converts and outputs the single-phase switching instruction signal into a differential switching instruction signal. A generation control circuit outputs a generation control signal for controlling generation of a control voltage in the control voltage generation circuit based on the differential switching instruction signal. A control voltage generation circuit outputs the control voltage upon changing a value of the control voltage in accordance with a logic of the single-phase switching instruction signal. An output circuit externally receives a differential input signal, outputs a differential output signal upon impedance-converting the differential input signal, and switches between the shutdown disable state and the shutdown enable state of the differential input signal.

摘要翻译： 在信号输出电路中，输入缓冲器从外部接收单相开关指令信号，以将输出电路的状态切换到关闭禁止状态或关断使能状态，并将单相切换指令信号转换并输出到差分 切换指令信号。 一代控制电路根据差动切换指示信号输出用于控制控制电压产生电路中的控制电压产生的发电控制信号。 控制电压产生电路根据单相切换指令信号的逻辑改变控制电压的值来输出控制电压。 输出电路从外部接收差分输入信号，通过对差分输入信号进行阻抗转换来输出差分输出信号，并在差分输入信号的关断禁止状态和关断使能状态之间切换。

公开(公告)号：US20110273317A1

公开(公告)日：2011-11-10

申请号：US13145782

申请日：2010-01-28

申请人： Munehiko Nagatani ,  Hideyuki Nosaka ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata

发明人： Munehiko Nagatani ,  Hideyuki Nosaka ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata

IPC分类号： H03M1/66 ,  H03K17/60 ,  H03K17/687

CPC分类号： H03M1/662 ,  H03M1/742

摘要： Two D flip-flops (D-FFMA, D-FFMB) output two half-rate signals (DMR-A, DMR-B) by dividing a digital input signal (DM) into two signals and retiming them based on a clock signal (CLK) and a negative-phase clock signal (CLKB). First and second switches (SM1, SM2) are driven by the two half-rate signals (DMR-A, DMR-B). Third and fourth switches (SM3, SM4) are driven by a select signal SW and a negative-phase select signal SWB that have the same frequency as that of the clock signal TO (CLK) but a different phase from that of the clock signal (CLK). The current supplied from a current source (1) to a load (4) thus becomes a current signal corresponding to a conversion frequency twice the frequency of the clock signal (CLK).

摘要翻译： 两个D触发器（D-FFMA，D-FFMB）通过将数字输入信号（DM）分成两个信号并基于时钟信号重新定时（DMR-A，D-FFMB）输出两个半速率信号 CLK）和负相位时钟信号（CLKB）。 第一和第二开关（SM1，SM2）由两个半速率信号（DMR-A，DMR-B）驱动。 第三和第四开关（SM3，SM4）由与时钟信号TO（CLK）的频率相同的频率的选择信号SW和负相位选择信号SWB驱动，但是与时钟信号 CLK）。 因此，从电流源（1）提供给负载（4）的电流成为与时钟信号（CLK）的频率的两倍的转换频率相对应的电流信号。

公开(公告)号：US07982848B2

公开(公告)日：2011-07-19

申请号：US11832730

申请日：2007-08-02

申请人： Koichi Murata

发明人： Koichi Murata

IPC分类号： G02F1/1335 ,  G02F1/13

CPC分类号： G02F1/133512 ,  G02F2001/133521 ,  G02F2201/346 ,  G03B21/006 ,  G03B21/14 ,  G03B21/2053 ,  G03B21/208 ,  H04N5/74 ,  H04N5/7458 ,  H04N9/3108 ,  H04N9/315 ,  H04N9/3152 ,  H04N9/3167

摘要： A variable light transmission device and projection display apparatus which does not generate vibrations and noises but is superior in light blocking property to a variable aperture using polymer-dispersed liquid crystal and can reduce a color change of a projected image as compared with a conventional variable aperture using liquid crystal. A variable light transmission device having: a pair of transparent substrates placed in parallel to each other; a multi-layer grating member disposed on one of opposing surfaces of the pair of transparent substrates, and transparent members having a multi-layer structure periodically placed to form a diffraction grating with a convex and concave section shape; liquid crystal interposed between the transparent substrates to bury the multi-layer grating member; and transparent electrodes for applying electric field to the liquid crystal.

摘要翻译： 一种可变光透射装置和投影显示装置，其与常规的可变光圈相比，不会产生振动和噪声，而是使用聚合物分散液晶在光可阻挡性方面优于可变孔径并且可以减少投影图像的颜色变化 使用液晶。 一种可变光传输装置，具有：一对彼此平行放置的透明基板; 设置在所述一对透明基板的相对面的一个上的多层光栅部件，以及周期性地配置多层结构的透明部件，形成具有凸部和凹部形状的衍射光栅; 液晶插入在透明基板之间以埋置多层光栅构件; 以及用于向液晶施加电场的透明电极。

公开(公告)号：US07599128B2

公开(公告)日：2009-10-06

申请号：US11923851

申请日：2007-10-25

申请人： Hiroaki Shimozono ,  Koichi Murata

发明人： Hiroaki Shimozono ,  Koichi Murata

IPC分类号： G02B3/08 ,  G02B1/06 ,  G02B3/12

CPC分类号： G02F1/29 ,  G02F1/133526 ,  G02F1/13471 ,  G02F2203/28

摘要： An imaging lens is provided, whose lens characteristics can be switched between e.g. normal imaging and close-up imaging without requiring mechanically movable mechanism or attachment/removal of another lens. Switching of lens function is realized by combining a liquid crystal diffraction lens and a refractive lens and applying a voltage to a liquid crystal layer of the liquid crystal lens. The liquid crystal lens is constituted by two liquid crystal lenses that are laminated together so that their polarization directions producing lens functions are perpendicular to each other, which suppresses chromatic aberration and achieves good imaging characteristics by appropriately selecting focal lengths and Abbe numbers.

摘要翻译： 提供一种成像透镜，其透镜特性可在例如 正常成像和特写成像，而不需要机械移动机构或附接/移除另一透镜。 通过组合液晶衍射透镜和折射透镜并对液晶透镜的液晶层施加电压来实现透镜功能的切换。 液晶透镜由层叠在一起的两个液晶透镜构成，使得它们产生透镜功能的偏振方向彼此垂直，通过适当地选择焦距和阿贝数来抑制色差并获得良好的成像特性。

公开(公告)号：US20080263541A1

公开(公告)日：2008-10-23

申请号：US12078983

申请日：2008-04-09

申请人： Koichi Murata ,  Kazuhiko Morisaki

发明人： Koichi Murata ,  Kazuhiko Morisaki

IPC分类号： G06F9/445

CPC分类号： G06F11/1469

摘要： A computer-readable recording medium storing a program for effectively restoring a previous status of a storage device which stores information of basic software, application software and setting data therefor in a computerized numerical controller when replacing the storage device. The recording medium stores a software recovery program for requiring an operator to select one of the functions of: installing a set of software with default setting; retreating all information stored in the storage device to an external storing device; restoring the all information retreated in the external storing device to the storage device, and performing one of the functions selected by the operator.

摘要翻译： 一种计算机可读记录介质，其存储用于在更换存储装置时有效地恢复存储装置的先前状态的程序，该存储装置在计算机化数字控制器中存储有基本软件，应用软件和设置数据的信息。 记录介质存储软件恢复程序，用于要求操作者选择以下功能之一：安装具有默认设置的一组软件; 将存储在存储设备中的所有信息撤回到外部存储设备; 将外部存储装置中退回的所有信息恢复到存储装置，并执行由操作者选择的功能之一。

公开(公告)号：US20080253265A1

公开(公告)日：2008-10-16

申请号：US11734535

申请日：2007-04-12

申请人： Koichi Murata ,  Yoshiharu Ooi

发明人： Koichi Murata ,  Yoshiharu Ooi

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G02B5/1828 ,  G02F1/1313 ,  G02F1/292 ,  G11B7/1369 ,  G11B2007/0006

摘要： The present invention provides an optical head apparatus having: a light source emitting a linearly-polarized light; an objective lens focusing a light source light emitted from the light source on an optical recording medium; a light detector receiving a return light generated by reflecting the light source light by the optical recording medium; and a variable diffraction device having: a first polarized light diffraction grating; and a second polarized light diffraction grating, the variable diffraction device: diffracting an incident light of the linearly-polarized light by one of the first polarized light diffraction grating and the second polarized light diffraction grating; and transmitting the incident light without diffraction by the other thereof, the first polarized light diffraction grating having: first stripes including an anisotropic transparent material; and second stripes including an isotropic transparent material, the first stripes and the second stripes being alternately arranged in a first direction and in a first pitch to fill each space; the second polarized light diffraction grating having: third stripes including an anisotropic transparent material; and fourth stripes including an isotropic transparent material, the third stripes and the fourth stripes being alternately arranged in a second direction and in a second pitch to fill each space; the first polarized light diffraction grating and the second polarized light diffraction grating being different in at least one of the pitches and the directions, the variable diffraction device being capable of switching: either the first polarized light diffraction grating or the second polarized light diffraction grating diffracting the incident light; and the other thereof transmitting the incident light without diffraction by changing refractive indices sensed by the incident light with respect to the first polarized light diffraction grating and the second polarized light diffraction grating by an externally applied electric signal.

公开(公告)号：US20080044125A1

公开(公告)日：2008-02-21

申请号：US11874547

申请日：2007-10-18

申请人： Toshimasa Kakiuchi ,  Koichi Murata

发明人： Toshimasa Kakiuchi ,  Koichi Murata

IPC分类号： G02F1/035

CPC分类号： G02B5/3083 ,  G02B27/288 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1381 ,  G11B2007/0006

摘要： A phase plate and an optical head device are provided, which are capable of suppressing changes of the amount of light incident on a light-receiving unit even if the phase difference caused by transmission through a protective layer of an optical recording medium differs depending on the type of optical recording medium. The phase plate includes a birefringent medium and produces a phase difference in linearly polarized light incident on the phase plate between a polarization component having a polarization direction parallel to the optic axis of the birefringent medium and a polarization component having a polarization direction perpendicular to the optic axis. In the phase plate, the birefringent medium includes a plurality of types of phase areas disposed adjacently; at least two types of adjacent phase areas are different from each other in phase differences, optic axes, or both phase differences and optic axes; and each of the plurality of types of phase areas is disposed so as to have two-fold rotational symmetry with respect to the optical axis of the phase plate.

摘要翻译： 提供一种相位板和光学头装置，其能够抑制入射在光接收单元上的光量的变化，即使由于通过光记录介质的保护层的透射引起的相位差根据 类型的光记录介质。 相位板包括双折射介质，并且在具有平行于双折射介质的光轴的偏振方向的偏振分量和具有垂直于光学元件的偏振方向的偏振分量之间产生入射在相位板上的线偏振光的相位差 轴。 在相位板中，双折射介质包括相邻设置的多个相位区域; 至少两种类型的相邻区域在相位差，光轴或相位差和光轴两者中彼此不同; 并且多个类型的相位区域中的每一个被设置成相对于相位板的光轴具有双重旋转对称。