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    Image display apparatus and image display method
    3.
    发明授权
    Image display apparatus and image display method 失效
    图像显示装置和图像显示方法

    公开(公告)号：US08259237B2

    公开(公告)日：2012-09-04

    申请号：US12491790

    申请日：2009-06-25

    申请人： Ken Nishioka ,  Atsuya Hirano ,  Kenji Nagashima ,  Manabu Murayama

    发明人： Ken Nishioka ,  Atsuya Hirano ,  Kenji Nagashima ,  Manabu Murayama

    IPC分类号： H04N5/64

    CPC分类号： G09G3/02 ,  G09G2320/0233 ,  H04N9/3129

    摘要： A detection surface of an optical detector is divided into regions C, E, F, G, and H. The optical detector outputs detection signals corresponding to the amounts of light incident on the respective regions. A position detection controller calculates an image projection position based on timing at which a laser beam is incident on region C. A laser control circuit adjusts the intensity of the laser beam emitted by a laser based on laser beam intensities detected in regions E to H arranged around region C.

    摘要翻译： 光检测器的检测面被分为区域C，E，F，G和H.光检测器输出与入射在各个区域上的光量对应的检测信号。 位置检测控制器基于激光束入射到区域C的定时来计算图像投影位置。激光控制电路基于在区域E至H中检测到的激光束强度来调整由激光发射的激光束的强度 周边地区C.

    IMAGE DISPLAY APPARATUS AND METHOD FOR CONTROLLING IMAGE DISPLAY APPARATUS
    4.
    发明申请
    IMAGE DISPLAY APPARATUS AND METHOD FOR CONTROLLING IMAGE DISPLAY APPARATUS 审中-公开
    图像显示装置和控制图像显示装置的方法

    公开(公告)号：US20100265278A1

    公开(公告)日：2010-10-21

    申请号：US12762716

    申请日：2010-04-19

    申请人： Ken Nishioka ,  Kenji Nagashima ,  Atsuya Hirano ,  Atsuhiko Chikaoka

    发明人： Ken Nishioka ,  Kenji Nagashima ,  Atsuya Hirano ,  Atsuhiko Chikaoka

    IPC分类号： G09G5/10

    CPC分类号： H04N9/3135 ,  H01S5/042 ,  H04N9/3155 ,  H04N9/3182

    摘要： An image display apparatus wherein reduction in contrast or resolution is prevented is provided. A laser projector as an embodiment of the image display apparatus includes a memory storing a threshold value predetermined for changing a driving mode of a laser light source, a calculator for calculating an optical power level for projecting an image, a driving-mode selector selecting a mode for driving the laser light source, a driving controller for sending a signal to the laser light source in accordance with a selected driving mode, and a laser emitter. The laser projector operates at least at a bias current value Ib or more. In this case, when the optical power level is lower than or equal to a predetermined threshold value TH, the laser projector emits pulsed light. When the optical power level based on a video signal exceeds threshold value TH, the laser projector changes the driving mode of laser light emission from pulsed light emission to DC light emission, to supply a current higher than or equal to bias current value Ib to each laser light source.

    摘要翻译： 提供了防止对比度或分辨率降低的图像显示装置。 作为图像显示装置的实施例的激光投影仪包括存储预定用于改变激光光源的驱动模式的阈值的存储器，用于计算用于投影图像的光功率电平的计算器，驱动模式选择器选择 用于驱动激光源的模式，用于根据选择的驱动模式向激光光源发送信号的驱动控制器和激光发射器。 激光投影仪至少工作在偏置电流值Ib或更大。 在这种情况下，当光功率水平低于或等于预定阈值TH时，激光投影仪发射脉冲光。 当基于视频信号的光功率电平超过阈值TH时，激光投影仪将激光发射的驱动模式从脉冲发光改变为DC发光，以将电流高于或等于偏置电流值Ib提供给每个 激光光源。

    Display device, and portable apparatus having projector function
    5.
    发明授权
    Display device, and portable apparatus having projector function 有权
    显示装置和具有投影仪功能的便携式装置

    公开(公告)号：US09069184B2

    公开(公告)日：2015-06-30

    申请号：US13635554

    申请日：2011-03-07

    申请人： Ken Nishioka ,  Kenji Nagashima ,  Atsuya Hirano ,  Atsuhiko Chikaoka

    发明人： Ken Nishioka ,  Kenji Nagashima ,  Atsuya Hirano ,  Atsuhiko Chikaoka

    IPC分类号： G03B21/28 ,  H04N9/31 ,  G02B27/48 ,  G02B26/10 ,  G09G3/02 ,  G09G3/00

    CPC分类号： G02B27/48 ,  G02B26/10 ,  G09G3/002 ,  G09G3/02 ,  G09G2320/0233

    摘要： Disclosed is a display device capable of inhibiting a projected picture from occurrence of brightness unevenness while reducing speckle noise. The display device (100) includes a control portion (15) continuously supplying current to a laser beam generation portion (12, 13, 14) nonstop for a period longer than a first period thereby controlling the laser beam generation portion to output the laser beam and controlling the laser beam generation portion to stop the output of the laser beam at least once in a second period scanning one image forming element (1, 2).

    摘要翻译： 公开了能够抑制投影图像发生亮度不均匀性同时减少斑点噪声的显示装置。 显示装置（100）包括控制部分（15），其连续地向激光束产生部分（12,13,14）供电，持续时间长于第一周期，从而控制激光束产生部分输出激光束 以及在扫描一个图像形成元件（1,2）的第二周期中控制激光束产生部分至少停止激光束的输出。

    Display Device, and Portable Apparatus having Projector Function
    6.
    发明申请
    Display Device, and Portable Apparatus having Projector Function 有权
    显示设备和具有投影机功能的便携式设备

    公开(公告)号：US20130010211A1

    公开(公告)日：2013-01-10

    申请号：US13635554

    申请日：2011-03-07

    申请人： Ken Nishioka ,  Kenji Nagashima ,  Atsuya Hirano ,  Atsuhiko Chikaoka

    发明人： Ken Nishioka ,  Kenji Nagashima ,  Atsuya Hirano ,  Atsuhiko Chikaoka

    IPC分类号： G03B21/14 ,  H04N9/31

    CPC分类号： G02B27/48 ,  G02B26/10 ,  G09G3/002 ,  G09G3/02 ,  G09G2320/0233

    摘要： Disclosed is a display device capable of inhibiting a projected picture from occurrence of brightness unevenness while reducing speckle noise. The display device (100) includes a control portion (15) continuously supplying current to a laser beam generation portion (12, 13, 14) nonstop for a period longer than a first period thereby controlling the laser beam generation portion to output the laser beam and controlling the laser beam generation portion to stop the output of the laser beam at least once in a second period scanning one image forming element (1, 2).

    摘要翻译： 公开了能够抑制投影图像发生亮度不均匀性同时减少斑点噪声的显示装置。 显示装置（100）包括控制部分（15），其连续地向激光束产生部分（12,13,14）供电，持续时间长于第一周期，从而控制激光束产生部分输出激光束 以及在扫描一个图像形成元件（1,2）的第二周期中控制激光束产生部分至少停止激光束的输出。

    IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY METHOD
    7.
    发明申请
    IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY METHOD 失效
    图像显示装置和图像显示方法

    公开(公告)号：US20100002152A1

    公开(公告)日：2010-01-07

    申请号：US12491790

    申请日：2009-06-25

    申请人： Ken Nishioka ,  Atsuya Hirano ,  Kenji Nagashima ,  Manabu Murayama

    发明人： Ken Nishioka ,  Atsuya Hirano ,  Kenji Nagashima ,  Manabu Murayama

    IPC分类号： H04N5/64

    CPC分类号： G09G3/02 ,  G09G2320/0233 ,  H04N9/3129

    摘要： A detection surface of an optical detector is divided into regions C, E, F, G, and H. The optical detector outputs detection signals corresponding to the amounts of light incident on the respective regions. A position detection controller calculates an image projection position based on timing at which a laser beam is incident on region C. A laser control circuit adjusts the intensity of the laser beam emitted by a laser based on laser beam intensities detected in regions E to H arranged around region C.

    摘要翻译： 光检测器的检测面被分为区域C，E，F，G和H.光检测器输出与入射在各个区域上的光量对应的检测信号。 位置检测控制器基于激光束入射到区域C的定时来计算图像投影位置。激光控制电路基于在区域E至H中检测到的激光束强度来调整由激光发射的激光束的强度 周边地区C.

    Image Display Device
    9.
    发明申请
    Image Display Device 有权
    图像显示设备

    公开(公告)号：US20130120714A1

    公开(公告)日：2013-05-16

    申请号：US13811476

    申请日：2011-07-11

    申请人： Ken Nishioka ,  Kenji Nagashima ,  Atsuya Hirano ,  Atsuhiko Chikaoka

    发明人： Ken Nishioka ,  Kenji Nagashima ,  Atsuya Hirano ,  Atsuhiko Chikaoka

    IPC分类号： G02B27/48

    CPC分类号： G02B27/48 ,  G03B21/2033 ,  G03B33/06 ,  G03B33/12 ,  G09G3/02 ,  G09G2360/145 ,  H01S5/005 ,  H01S5/4093 ,  H04N9/3129 ,  H04N9/3167

    摘要： To prevent effectively the flickering of an image due to the switching of a polarization direction while reducing speckle noise. A polarization switching unit is provided in an optical path of laser light to a projection surface A and periodically switches a polarization direction of the laser light emitted therefrom between p and S polarization. A laser control unit controls laser light sources in synchronization with the switching by the polarization switching unit and determines a driving current corresponding to a grayscale to be displayed on the basis of driving current characteristics for P polarization when the polarization direction of the laser light is the P polarization. In addition, the laser control unit determines the driving current corresponding to the grayscale to be displayed on the basis of the driving current characteristics for P polarization when the polarization direction of the laser light is the S polarization.

    摘要翻译： 为了有效地防止由于偏振方向的切换而导致的图像的闪烁，同时减少散斑噪声。 在激光的光路中将偏振切换单元设置到投影面A，并且在p和S偏振之间周期性地切换从其发射的激光的偏振方向。 激光控制单元与偏振切换单元的切换同步地控制激光光源，并根据激光的偏振方向为P偏振时的P偏振的驱动电流特性，确定与要显示的灰度对应的驱动电流 P极化。 此外，当激光的偏振方向为S偏振时，激光控制单元基于用于P偏振的驱动电流特性来确定与要显示的灰度对应的驱动电流。

    Dual-projection projector and method for projecting images on a plurality of planes
    10.
    发明授权
    Dual-projection projector and method for projecting images on a plurality of planes 有权
    双投影投影仪和用于在多个平面上投影图像的方法

    公开(公告)号：US08123361B2

    公开(公告)日：2012-02-28

    申请号：US12263959

    申请日：2008-11-03

    申请人： Kenji Nagashima ,  Atsuhiko Chikaoka ,  Seiji Takemoto ,  Hiroki Matsubara ,  Atsuya Hirano ,  Hiroshi Nishigaki

    发明人： Kenji Nagashima ,  Atsuhiko Chikaoka ,  Seiji Takemoto ,  Hiroki Matsubara ,  Atsuya Hirano ,  Hiroshi Nishigaki

    IPC分类号： G03B21/26

    CPC分类号： G06F3/04845 ,  G06F3/0423 ,  H04N9/3129

    摘要： A projector includes: a laser beam generator configured to emit a laser beam according to an image signal; a beam splitter configured to split the laser beam into a first laser beam toward the first projection plane and a second laser beam toward the second projection plane; a scanning unit, disposed between the laser beam generator and the beam splitter, configured to scan the laser beam from the laser beam generator toward the beam splitter; a light receiver configured to receive reflected light of the first laser beam; a computation portion configured to compute positional information indicating a position of an obstacle located in an optical path of the first laser beam based on a light receiving result by the light receiver; and a display control portion configured to change the image signal so that a pointer is displayed in the image based on the positional information.

    摘要翻译： 投影仪包括：激光束发生器，被配置为根据图像信号发射激光束; 分束器，其被配置为将激光束分裂成朝向第一投影平面的第一激光束，以及朝向第二投影平面的第二激光束; 设置在所述激光束发生器和所述分束器之间的扫描单元，被配置为将来自所述激光束发生器的激光束扫描到所述分束器; 被配置为接收第一激光束的反射光的光接收器; 计算部，被配置为基于所述光接收器的光接收结果计算表示位于所述第一激光束的光路中的障碍物的位置的位置信息; 以及显示控制部，被配置为基于所述位置信息来改变所述图像信号，使得指示体被显示在所述图像中。