公开(公告)号：US5743610A

公开(公告)日：1998-04-28

申请号：US697707

申请日：1996-08-27

申请人： Akitaka Yajima ,  Motoyuki Fujimori ,  Mutsuya Furuhata ,  Tomiyoshi Ushiyama ,  Terunaga Koide ,  Toshiaki Hashizume ,  Kiyoshi Miyashita ,  Hiroshi Harima ,  Keijiro Naito

发明人： Akitaka Yajima ,  Motoyuki Fujimori ,  Mutsuya Furuhata ,  Tomiyoshi Ushiyama ,  Terunaga Koide ,  Toshiaki Hashizume ,  Kiyoshi Miyashita ,  Hiroshi Harima ,  Keijiro Naito

IPC分类号： G02B27/14 ,  G03B21/14 ,  H04N5/74 ,  H04N9/31

CPC分类号： G03B33/12 ,  G02B27/1046 ,  G02B27/1073 ,  G02B27/145 ,  G02B27/149 ,  H04N9/3105 ,  H04N9/312 ,  H04N9/3141 ,  H04N9/3144 ,  H04N9/317 ,  H04N9/3182

摘要： A projection display comprising: a square column dichroic prism composed of four triangle prisms having equal refractive index together whose cross sections are right isosceles triangles such that three light valves are located adjacent to three exterior peripheral surfaces of dichroic prism to receive colored and modulated light beams therefrom and; a filter for absorbing light with a specified wavelength range, leaked from surface of dichroic prism at the opposite side of incident light surface and directed to liquid crystal light valve, the filter being located between liquid crystal light valves and surface of dichroic prism. As for construction of the dichroic prism itself, specifically, of the four aforementioned triangular prisms, the first triangular prism and the aforementioned third triangular prism are mutually affixed in a condition in which there is a first step difference in the vertical direction. The first exposed side is formed on one edge of the affixed side of the first triangular prism. Similarly, the second triangular prism and the fourth triangular prism are attached to each other such that there is a second step difference on the same edge, and a second exposed side is formed on one edge of the affixed surface of the second triangular prism. Further, the first and the third triangular prisms and the second and the fourth triangular prisms are attached, with a step difference between them, in such a way that the aforementioned first exposed side and the aforementioned second exposed side are located on the edges facing the same direction; and a third exposed surface that is orthogonal to the aforementioned first and second exposed surfaces is formed between the aforementioned first triangular prism and the aforementioned second triangular prism.

摘要翻译： 一种投影显示器，包括：方柱列分色棱镜，其由具有相等折射率的四个三角棱镜组成，其横截面为右等腰三角形，使得三个光阀位于与分色棱镜的三个外周表面相邻以接收有色调制光束 和 用于吸收具有特定波长范围的光的滤光器，从入射光面的相对侧的二向色棱镜的表面泄漏并且指向液晶光阀，该滤光器位于液晶光阀和二向色棱镜表面之间。 关于二向色棱镜本身的结构，具体地，在上述四个上述三角棱镜中，第一三角形棱镜和上述第三三棱镜在垂直方向上具有第一阶差的状态下相互固定。 第一暴露侧形成在第一三角形棱镜的固定侧的一个边缘上。 类似地，第二三角棱镜和第四三角棱镜彼此附接，使得在同一边缘上存在第二阶梯差，并且第二暴露侧形成在第二三角棱镜的固定表面的一个边缘上。 此外，第一和第三三角形棱镜和第二和第四三角棱镜以它们之间的台阶差附接，使得上述第一暴露侧和上述第二暴露侧位于面向 同方向 并且在上述第一三角棱镜和上述第二三棱镜之间形成有与上述第一和第二暴露表面正交的第三暴露表面。

公开(公告)号：US20090058839A1

公开(公告)日：2009-03-05

申请号：US12230398

申请日：2008-08-28

申请人： Keijiro Naito

发明人： Keijiro Naito

IPC分类号： G09G5/00

CPC分类号： H04N9/3144 ,  H04N5/74 ,  H04N9/315

摘要： A projector (image display apparatus) having enhanced visual mute or A/V mute functions includes a light modulation element for displaying an image, a lamp for illuminating the light modulation element, and a fan for cooling the lamp; the image display apparatus further includes a visual mute means for setting a visual mute mode in which no image or a predetermined image is displayed on a display screen thereof, and a lamp output luminance adjusting means for adjusting the output luminance of the lamp in response to the setting and canceling of the visual mute mode by the visual mute means.

摘要翻译： 具有增强的视觉静音或A / V静音功能的投影仪（图像显示装置）包括用于显示图像的光调制元件，用于照亮光调制元件的灯和用于冷却灯的风扇; 图像显示装置还包括用于设置在其显示屏幕上不显示图像或预定图像的视觉静音模式的视觉静音装置，以及用于响应于图像显示装置调节灯的输出亮度的灯输出亮度调节装置 通过视觉静音方式设置和取消视觉静音模式。

公开(公告)号：US07142182B2

公开(公告)日：2006-11-28

申请号：US10050831

申请日：2002-01-18

申请人： Toru Aoki ,  Keijiro Naito

发明人： Toru Aoki ,  Keijiro Naito

IPC分类号： G09G3/36

CPC分类号： G09G3/3611 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2320/04

摘要： The present invention provides an image processing circuit having a D/A converter that converts input image data Da to an analog signal to generate an image signal VID. The output range of the D/A converter is controlled by an output-range control signal CTLout having a different signal level according to the type of a liquid-crystal display panel used. Therefore, a range where the signal level of the image signal VID is changed can be adjusted according to the type of the liquid-crystal display panel. Consequently, even when an image-signal processing circuit is used with one of a plurality of types of liquid-crystal display panels having different V-T characteristics, since the data values of input image data Da can be assigned to a desired applied-voltage range, high-definition images can be displayed.

公开(公告)号：US06704008B2

公开(公告)日：2004-03-09

申请号：US09767886

申请日：2001-01-24

申请人： Keijiro Naito ,  Toru Aoki

发明人： Keijiro Naito ,  Toru Aoki

IPC分类号： G09G300

CPC分类号： H04N9/3182 ,  G09G3/20 ,  G09G3/3611 ,  G09G2320/0233 ,  G09G2320/0285 ,  H04N5/202 ,  H04N5/57 ,  H04N9/3194 ,  H04N9/69 ,  H04N17/04

摘要： An image display apparatus including an image correction section, a data storage device, and an image forming section. The image correction section corrects levels of given image data in accordance with the correction data stored in the data storage device. The image forming section is provided with a plurality of pixels each transmitting image-forming light responsive to corrected image data supplied from the image correction section, and the image-forming light reproduces a displayed image. The correction data are determined by obtaining data-correction values based on input-output characteristics of the image forming section. The data-correction values represent correction amounts of the image data needed to bring, closer to a predetermined reference level, the output levels of light at a plural locations of a displayed image which is displayed responsive to uniform image data representing a specific uniform image.

摘要翻译： 一种包括图像校正部分，数据存储装置和图像形成部分的图像显示装置。 图像校正部根据存储在数据存储装置中的校正数据来校正给定图像数据的电平。 图像形成部分设置有多个像素，每个像素响应于从图像校正部分提供的校正图像数据传输图像形成光，并且图像形成光再现显示的图像。 通过基于图像形成部的输入 - 输出特性获得数据校正值来确定校正数据。 数据校正值表示响应于表示特定均匀图像的统一图像数据而显示的显示图像的多个位置处的光的输出电平，更接近预定参考电平所需的图像数据的校正量。

公开(公告)号：US6144354A

公开(公告)日：2000-11-07

申请号：US29081

申请日：1998-04-29

申请人： Fumio Koyama ,  Keijiro Naito ,  Kiyoshi Miyashita

发明人： Fumio Koyama ,  Keijiro Naito ,  Kiyoshi Miyashita

IPC分类号： G09G3/20 ,  G09G3/36

CPC分类号： G09G3/3648 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2320/0276 ,  G09G3/2011 ,  G09G3/3614

摘要： To provide an image display apparatus in which, even if pixel data is phase-expanded, the influence of differences in circuit characteristic can be dispersed between frames. The apparatus has a phase expansion circuit 380 to which are input a first video signal A1 having pixel data for driving pixels with positive voltages and a second video signal A2 having pixel data for driving pixels with negative voltages. The phase expansion circuit 380 forms six phase-expanded signals V1 to V6 from the first and second video signals A1 and A2. The phase-expanded signals are expanded into pixel data by extending the data length of items of the pixel data corresponding to some of the pixels periodically selected. The phase expansion circuit 380 outputs the phase-expanded signals to phase-expanded signal output lines in parallel with each other. The apparatus also has a connection change circuit 390 for changing connections between six phase-expanded signal output lines 388a to 388f and six signal supply lines 132a to 132f. Change of the order of expansion into six phase-expanded signals V1 to V6 by the phase expansion means and change of the combination of connections changed by the connection change circuit 390 while being linked to the expansion order are controlled by a timing generation circuit block 200. This timing generation circuit block 220 performs change control so that a expansion order first set with respect to the preceding frame is changed to a different expansion order in synchronization with vertical synchronization.

摘要翻译： PCT No.PCT / JP97 / 02127 Sec。 371日期：1998年4月29日 102（e）日期1998年4月29日PCT提交1997年6月20日PCT公布。 第WO97 / 49080号公报 日期1997年12月24日为了提供一种图像显示装置，其中即使像素数据相位扩大，电路特性的差异的影响也可以分散在帧之间。 该装置具有相位扩展电路380，输入具有用于驱动具有正电压的像素的像素数据的第一视频信号A1和具有用于驱动具有负电压的像素的像素数据的第二视频信号+ E，ov A2 + EE。 相位扩展电路380从第一和第二视频信号A1和+ E，ov2A2 + EE形成六个相位扩展信号V1至V6。 通过扩展对应于周期性选择的一些像素的像素数据的项目的数据长度，将相位扩展的信号扩展为像素数据。 相位扩展电路380将相位扩展信号彼此并行地输出到相位扩展信号输出线。 该装置还具有用于改变六个相位扩展信号输出线388a至388f和六个信号提供线132a至132f之间的连接的连接改变电路390。 通过相位扩展装置将扩展顺序改变为六个相位扩展信号V1至V6，并且通过连接改变电路390连接到扩展顺序而改变的连接组合的改变由定时产生电路块200 该定时生成电路块220进行改变控制，使得相对于前一帧首先设置的扩展顺序与垂直同步同步地改变为不同的扩展顺序。

公开(公告)号：US07126570B2

公开(公告)日：2006-10-24

申请号：US10068879

申请日：2002-02-11

申请人： Keijiro Naito

发明人： Keijiro Naito

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/3648 ,  G09G3/3655

摘要： A liquid crystal device having multiple pixels includes an input terminal that receives a display signal including multiple pixel signals to be supplied to the multiple pixels. The display signal has a predetermined signal embedded therein for generating a common signal, which is to be commonly supplied to the multiple pixels, during a predetermined period that does not include the pixel signals in the display signal. The liquid crystal device further includes: a common signal line that is commonly connected to the multiple pixels; and a common signal line driving circuit that generates the common signal in response to the predetermined signal included in the display signal input from the input terminal and supplies the generated common signal to the common signal line. Such arrangement desirably enhances the reliability of the liquid crystal device.

公开(公告)号：US06710909B2

公开(公告)日：2004-03-23

申请号：US10290231

申请日：2002-11-08

申请人： Keijiro Naito

发明人： Keijiro Naito

IPC分类号： G02B2600

CPC分类号： H04N9/3114 ,  G02B26/0841 ,  H04N5/7458 ,  H04N9/3152 ,  H04N9/3167

摘要： A projector has an illuminating optical system for irradiating white light, a color switching optical system for dividing the white light irradiated by the illuminating optical system into color lights in a time-division manner, a DMD™ for modulating the respective color lights in accordance with an image signal, a projection optical system for projecting the light beam modulated by the DMD, a light-composite optical system for getting the light beam not incident on the projection optical system to be incident again on the DMD and a device controller for controlling the operation of the projector, where the light beam irradiated by the DMD and not incident on the projection optical system is irradiated as a light beam of uniform illuminance distribution by the light-composite optical system and is again introduced on an illumination optical axis to be incident on the DMD, thus enhancing peak luminance of the projected image and achieving high contrast ratio.

摘要翻译： 投影仪具有用于照射白光的照明光学系统，用于将由照明光学系统照射的白色光以时分方式分割为彩色光的颜色切换光学系统，用于调制各色光的DMD TM 根据图像信号，用于投影由DMD调制的光束的投影光学系统，用于使未入射在投影光学系统上的光束进入DMD的光复合光学系统，以及用于 控制由DMD照射并且不入射在投影光学系统上的光束作为由光复合光学系统均匀照度分布的光束照射的投影仪的操作，并再次被引入到照明光轴上 入射到DMD上，从而提高投影图像的峰值亮度，达到高对比度。

公开(公告)号：US06462735B2

公开(公告)日：2002-10-08

申请号：US09347521

申请日：1999-07-06

申请人： Keijiro Naito

发明人： Keijiro Naito

IPC分类号： G09G500

CPC分类号： H04N9/69 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2310/0297 ,  G09G2320/0276 ,  G09G2320/0285 ,  H04N5/202 ,  H04N5/66 ,  H04N5/7441 ,  H04N9/3102 ,  H04N2005/745

摘要： A display device in which brightness and contrast in an electro-optical device are improved, and gain adjustment and brightness adjustment are not necessary. The present invention provides a device which drives a liquid crystal device in which light transmittance ratio changes based on applied voltage. Furthermore, a digital picture signal is gamma-corrected in a digital gamma correction circuit, and subsequently converted into an analog signal in a D/A conversion block and supplied to the liquid crystal device. The digital gamma correction circuit converts an 8-bit digital picture signal into a 10-bit digital picture signal based on gamma correction characteristics predetermined by applied voltage-transmittance characteristics inherent in the liquid crystal device in the entire transmittance range of 0% and 100%.

摘要翻译： 改善了电光装置的亮度和对比度的显示装置，并且不需要增益调整和亮度调节。 本发明提供一种驱动透光率根据施加电压而变化的液晶装置的装置。 此外，数字图像信号在数字伽马校正电路中进行伽马校正，随后在D / A转换块中转换为模拟信号并提供给液晶装置。 数字伽马校正电路将8位数字图像信号基于在0％和100％的全部透射率范围内通过施加的液晶装置固有的电压 - 透射率特性预先确定的伽马校正特性将8位数字图像信号转换成10位数字图像信号。 。