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    POLARIZATION SWITCHING LIQUID CRYSTAL ELEMENT AND IMAGE DISPLAY APPARATUS HAVING THE SAME
    3.
    发明申请
    POLARIZATION SWITCHING LIQUID CRYSTAL ELEMENT AND IMAGE DISPLAY APPARATUS HAVING THE SAME 有权
    极化开关液晶元件和具有该液晶元件的图像显示装置

    公开(公告)号：US20080225187A1

    公开(公告)日：2008-09-18

    申请号：US12111390

    申请日：2008-04-29

    申请人： Kazuya Yamanaka

    发明人： Kazuya Yamanaka

    IPC分类号： G02F1/13363 ,  C09K19/02

    CPC分类号： G02F1/1396 ,  G03B21/006 ,  G03B21/2073 ,  G03B33/08 ,  G03B33/12 ,  G09G3/001 ,  G09G3/003 ,  G09G2320/0242 ,  H04N9/3114 ,  H04N9/3167

    摘要： The present invention provides a polarization switching liquid crystal element 1 having TN liquid crystal 7 retained between two transparent substrates 2a and 2b for transmitting at least visible polarized light with the polarized light transmission axis selectively rotated by 90 degrees when a voltage is selectively applied to the TN liquid crystal 7, wherein a phase difference u of said TN liquid crystal 7 is defined by the following equation: u=2×Δn×d/λ, where Δn is the refractive index anisotropy of said TN liquid crystal 7, d is the thickness of said TN liquid crystal 7, and λ is the wavelength of said polarized light, and a transmittance T of said polarization switching liquid crystal element measured with polarization plates on the incident and outgoing sides is defined by the following equation: T=(½)×sin2{π(1+u2)1/2/2}/(1+u2), and wherein the phase difference u includes a value 1.7 and the transmittance T is 0.1 or lower when the λ ranges from 400 nm to 700 nm. Then, a polarization switching liquid crystal element having a high response speed and reduced wavelength-dependency can be realized using inexpensive and highly durable TN liquid crystal without increasing parts cost.

    摘要翻译： 本发明提供了一种偏振切换液晶元件1，其具有保持在两个透明基板2a和2b之间的TN液晶7，用于当选择性地施加电压时透射偏振光透射轴选择性旋转90度的至少可见偏振光 对于TN液晶7，其中所述TN液晶7的相位差u由以下等式定义：u = 2×Deltanxd /λ，其中Deltan是所述TN液晶7的折射率各向异性，d是厚度 的所述TN液晶7，λ是所述偏振光的波长，并且在入射侧和出射侧用偏振板测量的所述偏振切换液晶元件的透射率T由以下等式定义：T =（1/2） （1 + u 2/2）/（1 + u 2/2） ），并且其中相位差u包括值1.7和透射率T i 当λ范围为400nm至700nm时，其为0.1或更低。 然后，可以使用廉价且高度耐用的TN液晶来实现具有高响应速度和降低的波长依赖性的偏振切换液晶元件，而不增加部件成本。

    Automatic gain control circuit for controlling two AGC amplifiers
    4.
    发明授权
    Automatic gain control circuit for controlling two AGC amplifiers 有权
    用于控制两个AGC放大器的自动增益控制电路

    公开(公告)号：US06728524B2

    公开(公告)日：2004-04-27

    申请号：US09739008

    申请日：2000-12-19

    申请人： Kazuya Yamanaka ,  Syuji Murakami

    发明人： Kazuya Yamanaka ,  Syuji Murakami

    IPC分类号： H04B106

    CPC分类号： H03G3/3068

    摘要： An automatic gain control circuit includes a power calculator for calculating power of a modulation wave supplied to a demodulator; a power comparator for comparing the power calculated by the power calculator with ideal power of a modulation scheme of the modulation signal; a first gain controller for carrying out gain control of a first AGC amplifier in response to an output of the power comparator; and a second gain controller for carrying out gain control of the second AGC amplifier in response to the output of the power comparator. The automatic gain control circuit can solve a problem of a conventional AGC circuit in that precision gain distribution cannot be achieved to the two AGC amplifiers because the two AGC amplifiers are controlled by a single control signal output from the automatic gain control circuit.

    摘要翻译： 自动增益控制电路包括：功率计算器，用于计算提供给解调器的调制波的功率; 功率比较器，用于将由功率计算器计算的功率与调制信号的调制方案的理想功率进行比较; 第一增益控制器，用于响应于所述功率比较器的输出执行第一AGC放大器的增益控制; 以及第二增益控制器，用于响应于功率比较器的输出执行第二AGC放大器的增益控制。 自动增益控制电路可以解决常规AGC电路的问题，因为两个AGC放大器由自动增益控制电路输出的单个控制信号控制，因此无法实现两个AGC放大器的精确增益分配。

    Optical prism for projecting image
    5.
    发明授权
    Optical prism for projecting image 失效
    用于投影图像的光学棱镜

    公开(公告)号：US06690522B2

    公开(公告)日：2004-02-10

    申请号：US10116098

    申请日：2002-04-05

    申请人： Hiroyoshi Kobayashi ,  Kazuya Yamanaka ,  Yoshihiro Maeda

    发明人： Hiroyoshi Kobayashi ,  Kazuya Yamanaka ,  Yoshihiro Maeda

    IPC分类号： G02B504

    CPC分类号： G02B17/086 ,  G02B5/04 ,  G02B17/0832 ,  G02B17/0848 ,  G02B27/017 ,  G02B27/0172 ,  G02B27/0176 ,  G02B2027/0132 ,  G02B2027/0178 ,  G02B2027/0196

    摘要： An optical prism (1) for reflecting incident light from an incidence surface (2) suited for incidence of light from an LCD (20) or the like for at least twice before emitting the reflected light as emission light from a predetermined emission surface (4). The optical prism has side surfaces (6L and 6R) crossing the incidence and emission surfaces (2 and 4) and including receded surfaces 7L and 7R) formed such as not to impede an optical path of an effective size, the incident light being led along the optical path from the incidence surface to the emission surface.

    摘要翻译： 一种光学棱镜（1），用于将来自适合于从LCD（20）等的光入射的入射表面（2）的入射光反射至少两次，然后发射反射光作为来自预定发射表面（4）的发射光 ）。 光学棱镜具有与入射和发射表面（2和4）交叉并且包括形成为不妨碍有效尺寸的光路的后退表面7L和7R的侧表面（6L和6R），入射光沿着 从入射表面到发射表面的光路。

    Image display device
    6.
    发明授权
    Image display device 失效
    图像显示装置

    公开(公告)号：US06417895B1

    公开(公告)日：2002-07-09

    申请号：US09370660

    申请日：1999-08-06

    申请人： Seiichiro Tabata ,  Kazuya Yamanaka ,  Kazunari Hanano

    发明人： Seiichiro Tabata ,  Kazuya Yamanaka ,  Kazunari Hanano

    IPC分类号： G02F11333

    CPC分类号： G02F1/1347 ,  G02B5/30 ,  G02B27/017 ,  G02B27/0172 ,  G02F1/13363 ,  G02F2413/01 ,  H04N5/7441 ,  H04N5/7491 ,  H04N9/3102

    摘要： The present invention provides an image display device including an LCD, a polarization switching liquid crystal cell, a birefringent plate, and an eyepiece. The LCD displays an image using a plurality of arrayed pixel locations. The polarization switching liquid crystal cell has a plurality of electrodes incorporated therein and switches the direction of polarization in which light emitted from the LCD is polarized. The birefringent plate varies the optical path of light emitted from the polarization switching liquid crystal cell depending on the direction of polarization. The eyepiece magnifies light representing an image displayed on the LCD. The LCD and polarization switching liquid crystal cell are positioned so that the distance L1 from the eyeballs to the virtual image plane of the LCD and the distance L2 from the eyeballs to the virtual image plane of the polarization switching liquid crystal cell will have the relationship of 1/L2−1/L1≧0.4 D or L2≦200 mm. Otherwise, the birefringent plate or the like is coated with an anti-reflective coating. The image display device thus makes unnecessary streaks or flickers indiscernible and displays an easy-to-see image.

    摘要翻译： 本发明提供一种包括LCD，偏振切换液晶盒，双折射板和目镜的图像显示装置。 LCD使用多个阵列像素位置显示图像。 偏振切换液晶单元具有并入其中的多个电极，并且切换从LCD发出的光被偏振的偏振方向。 双折射板根据偏振方向改变从偏振切换液晶单元发射的光的光路。 目镜放大表示LCD上显示的图像的光。 LCD和偏振切换液晶单元被定位成使得从眼球到虚拟像平面的距离L1和从眼球到偏振切换液晶单元的虚像平面的距离L2将具有 1 / L2-1 / L1> = 0.4D或L2 <= 200mm。 否则，双折射板等涂覆有抗反射涂层。 因此，图像显示装置使得不必要的条纹或闪烁不可见，并且显示易于看见的图像。

    Phase detector
    7.
    发明授权
    Phase detector 失效
    相位检测器

    公开(公告)号：US5832040A

    公开(公告)日：1998-11-03

    申请号：US815573

    申请日：1997-03-12

    申请人： Kazuya Yamanaka ,  Shuji Murakami ,  Jun Ido ,  Takashi Fujiwara

    发明人： Kazuya Yamanaka ,  Shuji Murakami ,  Jun Ido ,  Takashi Fujiwara

    IPC分类号： H04L27/38

    CPC分类号： H04L27/3827

    摘要： It is an object to enlarge the phase range in which a phase error can be determined. An operating block (1) calculates a power of carriers from data DI and DQ. An ideal symbol estimating block (2a) outputs a plurality of ideal symbols which correspond to the power of carriers outputted from the operating block (1). A phase error tan(.theta.) calculating block (2b) calculates prediction phase errors between the ideal symbols and the symbol given by the data DI and DQ. A phase error determining block (3) determines a phase error from among the prediction phase errors outputted from the phase error tan(.theta.) calculating block and outputs the phase error.

    摘要翻译： 本发明的目的是扩大可以确定相位误差的相位范围。 操作块（1）从数据DI和DQ计算载波的功率。 理想符号估计块（2a）输出与从操作块（1）输出的载波功率对应的多个理想符号。 相位误差tan（θ）计算块（2b）计算理想符号与由数据DI和DQ给出的符号之间的预测相位误差。 相位误差确定块（3）从相位误差tan（θ）计算块输出的预测相位误差中确定相位误差，并输出相位误差。

    Dynamic memory
    8.
    发明授权
    Dynamic memory 失效
    动态内存

    公开(公告)号：US5652728A

    公开(公告)日：1997-07-29

    申请号：US524930

    申请日：1995-09-08

    申请人： Shiro Hosotani ,  Minobu Yazawa ,  Kazuya Yamanaka

    发明人： Shiro Hosotani ,  Minobu Yazawa ,  Kazuya Yamanaka

    IPC分类号： G11C11/405 ,  G11C7/00 ,  G11C11/401 ,  G11C11/4099

    CPC分类号： G11C11/4099

    摘要： Dummy information of a third level, which is between first and second levels written in a plurality of memory cells, is written in a dummy memory cell from a source node through transistors. Thus, a potential difference is caused between a read bit line and a dummy read bit line in reading. A potential comparison circuit indicates the level of information read from any memory cell on the basis of the comparison result as to the potentials of the dummy read bit line and the read bit line. Thus, the read rate is increased, the read operation is stabilized and increase of the chip area is suppressed.

    摘要翻译： 写入多个存储单元的第一级和第二级之间的第三级的虚拟信息通过晶体管从源节点写入虚拟存储单元。 因此，读取中的读取位线和虚拟读取位线之间产生电位差。 潜在的比较电路根据关于虚拟读取位线和读取位线的电位的比较结果来指示从任何存储器单元读取的信息的电平。 因此，读取速率增加，读取操作稳定，并且抑制了芯片面积的增加。

    Sensor unit and image display apparatus
    10.
    发明授权
    Sensor unit and image display apparatus 失效
    传感器单元和图像显示装置

    公开(公告)号：US07705986B2

    公开(公告)日：2010-04-27

    申请号：US11804768

    申请日：2007-05-18

    申请人： Kazuya Yamanaka ,  Susumu Kobayashi ,  Kensuke Ishii

    发明人： Kazuya Yamanaka ,  Susumu Kobayashi ,  Kensuke Ishii

    IPC分类号： G01J4/00

    CPC分类号： G09G3/3611 ,  G09G3/002 ,  G09G3/006 ,  G09G2300/0491 ,  G09G2320/029 ,  G09G2320/041

    摘要： A sensor unit for measuring a response characteristic of a polarization rotation liquid crystal cell, includes a measurement light source which emits measurement light, a first polarization plate which has a first polarization direction and receives the measurement light from the measurement light source to output measurement light having the first polarization direction to a polarization rotation liquid crystal cell, a second polarization plate which has a second polarization direction and receives measurement light passed through the polarization rotation liquid crystal cell, a light receiving unit which receives measurement light passed through the second polarization plate, and a measurement unit which determines a response characteristic of the polarization rotation liquid crystal cell on the basis of a drive signal of the polarization rotation liquid crystal cell and the amount of measurement light received by the light receiving unit.

    摘要翻译： 一种用于测量偏振旋转液晶单元的响应特性的传感器单元，包括发射测量光的测量光源，具有第一偏振方向并接收来自测量光源的测量光以输出测量光的第一偏振板 具有朝向偏振旋转液晶单元的第一偏振方向，具有第二偏振方向并且接收通过偏振旋转液晶单元的测量光的第二偏振板，受光单元，其接收穿过第二偏振板的测量光 以及测量单元，其基于偏振旋转液晶单元的驱动信号和由光接收单元接收的测量光量来确定偏振旋转液晶单元的响应特性。