公开(公告)号：US20040169828A1

公开(公告)日：2004-09-02

申请号：US10779761

申请日：2004-02-18

Applicant: NEC VIEWTECHNOLOGY, LTD.

Inventor： Kunitaka Furuichi

IPC: G03B021/28

CPC classification number: G03B21/10 ,  G03B21/28

Abstract: There is provided a projector apparatus having an image forming optical system including a plate fixed to a housing, and a plurality of reflecting mirrors attached to the plate through respective holding members. The material of the reflecting mirrors, and the materials of the plate and the holding members have approximately equal coefficients of linear expansion. Sliding means is provided at a contact point between the housing and the plate for releasing an excessive force generated at the contact point.

Abstract translation: 提供一种具有图像形成光学系统的投影仪装置，该图像形成光学系统包括固定到壳体的板和通过各个保持构件附接到板的多个反射镜。 反射镜的材料以及板和保持构件的材料具有大致相等的线膨胀系数。 滑动装置设置在壳体和板之间的接触点处，用于释放在接触点处产生的过大的力。

公开(公告)号：US20040155605A1

公开(公告)日：2004-08-12

申请号：US10734273

申请日：2003-12-15

Applicant: NEC VIEWTECHNOLOGY, LTD.

Inventor： Hideaki Hosono

IPC: H05B041/16

CPC classification number: H05B41/2886 ,  H05B41/282 ,  H05B41/2923 ,  Y02B20/208 ,  Y10S315/04

Abstract: A discharge lamp energizing power supply device is operable to reduce an electric power loss in a wide range of commercial power supply voltages employed in various parts of the world, and can stably perform its functions without causing a functional shutdown of a boosting circuit due to an increase in the power supply voltage and a functional shutdown of a voltage lowering circuit due to a characteristic deterioration of a discharge lamp. The discharge lamp energizing power supply device has a full-wave rectifier circuit for rectifying an AC voltage obtained from a commercial AC power supply system into a full-wave rectified waveform, a booster circuit for boosting the voltage of the full-wave rectified waveform, a boosted-voltage changing circuit for changing the boosted voltage output from the booster circuit, a voltage lowering circuit for lowering an output voltage from the boosted-voltage changing circuit and outputting an activating output voltage for activating a discharge lamp and an energizing output voltage for keeping the discharge lamp energized, and a control device for controlling a boosted voltage in the boosted-voltage changing circuit within a predetermined range based on the voltage of the full-wave rectified waveform when the voltage lowering circuit outputs the energizing output voltage.

Abstract translation: 放电灯通电电源装置可操作以减少在世界各地使用的商用电源电压的广泛范围内的电力损失，并且可以稳定地执行其功能而不引起升压电路的功能关闭，这是由于 由于放电灯的特性劣化，电源电压的增加和降压电路的功能关闭。 放电灯通电电源装置具有全波整流电路，用于将从商用交流电源系统获得的交流电压整流为全波整流波形;升压电路，用于升压全波整流波形的电压; 用于改变从升压电路输出的升压电压的升压电压改变电路，用于降低来自升压转换电路的输出电压并输出用于激活放电灯的激活输出电压的电压降低电路和用于 保持放电灯通电;以及控制装置，用于当降压电路输出激励输出电压时，基于全波整流波形的电压，将升压电压改变电路中的升压电压控制在预定范围内。

公开(公告)号：US20040114255A1

公开(公告)日：2004-06-17

申请号：US10729437

申请日：2003-12-05

Applicant: NEC Viewtechnology, Ltd.

Inventor： Eiki Matsuo

IPC: G02B017/00

CPC classification number: G02B17/0852 ,  G02B13/16 ,  G02B13/18 ,  G02B17/08 ,  G02B17/0812 ,  G02B17/0828 ,  G02B17/0844 ,  G02B17/0848 ,  G03B21/10 ,  G03B21/28

Abstract: A luminous flux, from one conjugate surface (A), having an opening angle of at least 10null sequentially passes through a first optical system (30) having a luminous flux convergent action in the vicinity of its reference axis and a second optical system (31) having a luminous flux divergent action in the vicinity of its reference axis, and converges on another conjugate surface (B). A specific condition is given to the converging distance of each converging point at a luminous flux section including a principal ray according to the passing position of the luminous flux through the first optical system (30) to thereby implement an oblique-incident optical system having a half angle of at least 60null and a comparatively simple structure irrespective of a type of an optical element used.

公开(公告)号：US20040109615A1

公开(公告)日：2004-06-10

申请号：US10706075

申请日：2003-11-13

Applicant: NEC VIEWTECHNOLOGY, LTD.

Inventor： Toshiaki Nakamura

IPC: G06K009/40 ,  G06K009/20

CPC classification number: H04N1/387 ,  H04N1/195 ,  H04N2201/0436

Abstract: A document camera is provided for preventing a camera unit from interfering with works such as a change of one document to another. Camera unit of document camera is disposed above script base at a location away from the center of script base to prevent camera unit from interfering with the head or hand of a user. Simultaneously, light source is placed in proximity to camera unit to prevent regularly reflected light from script base from introducing into an optical system of camera unit, thus producing a fine image. Image signal processor is further provided for eliminating a trapezoidal distortion caused by a change in the position at which camera unit is attached.

Abstract translation: 提供了一种用于防止相机单元干扰诸如将一个文档更改为另一个的作品的文档照相机。 文件照相机的照相机单元在远离脚本底部中心的位置上方设置在脚本基础之上，以防止相机单元干扰用户的头部或手。 同时，将光源放置在相机单元附近，以防止来自脚本基座的规则反射光引入相机单元的光学系统中，从而产生精细图像。 还提供了图像信号处理器，用于消除由相机单元附接的位置的变化引起的梯形失真。

公开(公告)号：US20040044903A1

公开(公告)日：2004-03-04

申请号：US10635677

申请日：2003-08-07

Applicant: NEC Viewtechnology, Ltd.

Inventor： Yoshiharu Komatsu

IPC: G06F012/14

CPC classification number: G06F21/70 ,  G06F21/30 ,  G06F21/62 ,  G06F21/88 ,  G06F2221/2153

Abstract: Electric equipment, and a method and a program for preventing the unauthorized use of same, by which it is possible to prevent the theft of electric equipment installed in an environment where the electric equipment is available for the use of an unspecified number of users and the stealing of information stored in the electric equipment. The electric equipment comprises: an operation limiting section for setting a function limit to make at least part of functions of the electric equipment unavailable; an I/F for connecting an external device to the electric equipment; an external device information obtaining section for obtaining device identification information from an external device connected via the interface to the electric equipment to identify the device; a write control section for associating the function limit with the device identification information of a prescribed external device to thereby obtain a cryptographic key; an NVRAM for storing the cryptographic key; and a comparator for determining whether or not the device identification information obtained from an external device connected via the interface to the electric equipment matches the cryptographic key stored in the NVRAM. The operation limiting section cancels the function limit when the comparator determines that the obtained information matches the cryptographic key.

Abstract translation: 电气设备以及用于防止未授权使用的电气设备的方法和程序，通过该方法和程序，可以防止在电气设备可用于使用未指定数量的用户的环境中安装的电气设备的被盗，并且 窃取存储在电气设备中的信息。 电气设备包括：用于设定功能限制的操作限制部分，使得电气设备的功能的至少一部分不可用; 用于将外部设备连接到电气设备的I / F; 外部设备信息获取部分，用于从经由所述接口连接到所述电气设备的外部设备获取设备标识信息，以识别所述设备; 写入控制部分，用于将功能限制与规定的外部设备的设备识别信息相关联，从而获得密码密钥; 用于存储加密密钥的NVRAM; 以及比较器，用于确定从经由与电气设备的接口连接的外部设备获得的设备识别信息是否与存储在NVRAM中的密码相匹配。 当比较器确定所获得的信息与加密密钥匹配时，操作限制部分取消功能限制。

公开(公告)号：US20040017550A1

公开(公告)日：2004-01-29

申请号：US10616948

申请日：2003-07-11

Applicant: NEC VIEWTECHNOLOGY, LTD.

Inventor： Takehiko Yasumi ,  Kazuo Mochizuki ,  Hisakazu Aoyanagi ,  Michitaka Naitou ,  Shigenobu Jyou

IPC: G03B021/00

CPC classification number: H04N9/73 ,  H04N5/74 ,  H04N9/3182

Abstract: A first area and a second are formed in an image projected by a projector. A standard image plate is placed in a surface on which an image for the first area is projected. A standard image has been drawn on a standard image plate and is displayed in correct colors when white light is projected on the standard image plate. The projector projects white light as the image for the first area. An image for the second area is projected on a projecting surface. A user operates an operating section so that the image in the second area is closer to the standard image. A color correcting section corrects the colors of the image in the second area on the basis of information inputted to the operating section.

Abstract translation: 在由投影仪投射的图像中形成第一区域和第二区域。 将标准图像板放置在其上投影第一区域的图像的表面中。 在标准图像板上绘制了标准图像，并将白光投射在标准图像板上时以正确的颜色显示。 投影机投影白光作为第一个区域的图像。 第二区域的图像被投影在突出表面上。 用户操作操作部分，使得第二区域中的图像更接近标准图像。 颜色校正部根据输入到操作部的信息来校正第二区域中的图像的颜色。

公开(公告)号：US20030007132A1

公开(公告)日：2003-01-09

申请号：US10187607

申请日：2002-07-03

Applicant: NEC VIEWTECHNOLOGY, LTD.

Inventor： Eisaku Shouji

IPC: G03B021/26

CPC classification number: G02B27/0994 ,  G02B26/0841 ,  H04N9/3105 ,  H04N9/3152

Abstract: A projector device is provided which is capable of reducing its costs by making it possible to increase luminance of outgoing light from a rod integrator with an output from a light source being remained unchanged and by making it possible to achieve a compact illuminating optical system using a shortened total length of the rod integrator. Notches each having a predetermined angle or a convex portion is formed in a vicinity of a light incident face and in a vicinity of a light outgoing face of a rod integrator. A sloped line produced at an angle formed by one portion of each of the notches on the light incident side relative to a center line is approximately parallel to a light incident line produced at an angle formed by incident light relative to the center line.

Abstract translation: 提供一种投影仪装置，其能够通过使来自光源的输出保持不变而能够增加来自杆状积分器的出射光的亮度从而降低其成本，并且通过使得能够实现使用 缩短棒状积分器的总长度。 每个具有预定角度或凸部的凹口形成在光入射面附近和杆状积分器的光出射面附近。 以相对于中心线的光入射侧的每个凹口的一部分形成的角度产生的倾斜线大致平行于由入射光相对于中心线形成的角度产生的光入射线。

公开(公告)号：US20020180361A1

公开(公告)日：2002-12-05

申请号：US10105449

申请日：2002-03-26

Applicant: NEC VIEWTECHNOLOGY, Ltd.

Inventor： Tomoyoshi Matsushita ,  Shigeru Fujino ,  Jimmie D. Songer

IPC: H01J023/16

CPC classification number: H04N9/73 ,  H04N9/67

Abstract: A method of correcting color purity is provided for reducing differences in picture quality between film images and television receiver images by the video signals, thus enabling reproduction of picture quality that approximates images that are shown in a movie theater. When outputting signal levels of each of the color components of video signals, color mixing is performed in which the output signal level is the sum of products of all of the color component levels that have been received as input multiplied by coefficients. By setting these coefficients within the range null0.3 to 0.3, the influence from other colors can be limited to prevent excessive change from the colors of the original image.

Abstract translation: 提供了一种校正色纯度的方法，用于通过视频信号减少胶片图像和电视接收机图像之间的图像质量的差异，从而能够再现近似于电影院中显示的图像的图像质量。 当输出视频信号的每个颜色分量的信号电平时，执行混色，其中输出信号电平是已经被接收的所有颜色分量电平的乘积乘以系数的乘积之和。 通过将这些系数设置在-0.3至0.3的范围内，可以限制来自其他颜色的影响，以防止与原始图像的颜色的过度变化。

公开(公告)号：US20020044263A1

公开(公告)日：2002-04-18

申请号：US09974966

申请日：2001-10-12

Applicant: NEC VIEWTECHNOLOGY, LTD.

Inventor： Tadashi Takeuchi

IPC: G03B021/00 ,  G03B021/14

CPC classification number: G03B21/62 ,  G03B21/10 ,  G03B21/28

Abstract: A flat mirror 2 for folding an optical path in a casing of a rear projection television is arranged in the casing on not the side of a screen 4 but a rear or upper side of the casing. In order to direct an optical path of an image projection to a flat mirror 3 on a rear or upper side of the casing, a plurality of focusing mirrors 5a to 5d, with which a light beam can be directed at a large angle with respect to a normal line of the screen and can focus an image through a shorter distance compared with a conventional lens system, are used. Since the light beam projected by the focusing mirrors 5a to 5d is directed at high angle and reflected by the rear or upper side flat mirror 2 in the casing, the light beam is focused on the screen 4 provided on a front side of the casing. By utilizing this projection system and the arrangement of the flat mirror, it is possible to remove an unnecessary space provided below the screen 4 and provides a compact rear projection television having a large screen.

Abstract translation: 用于折叠背投电视机的壳体中的光路的平面镜2布置在壳体中而不是屏幕4的侧面，但是壳体的后侧或上侧。 为了将图像投影的光路引导到壳体的后侧或上侧的平面反射镜3，可以将多个聚焦镜5a至5d相对于 使用屏幕的法线，并且可以与传统的透镜系统相比，将图像聚焦在较短的距离上。 由于由聚焦镜5a至5d投影的光束以高角度指向并被壳体中的后侧或上侧平面镜2反射，所以光束聚焦在设置在壳体的前侧上的屏幕4上。 通过利用该投影系统和平面镜的布置，可以去除设置在屏幕4下方的不必要的空间，并提供具有大屏幕的紧凑的背投电视。

公开(公告)号：US20040207819A1

公开(公告)日：2004-10-21

申请号：US10824545

申请日：2004-04-15

Applicant: NEC Viewtechnology, Ltd.

Inventor： Daisuke Moriwaki ,  Yoshiharu Komatsu

IPC: G03B021/14

CPC classification number: G09B27/00 ,  H04N9/3185 ,  H04N9/3188

Abstract: An auxiliary line created on a computer is displayed on a user interface screen, and is projected onto a curved screen by a projector. The user adjusts real numbers substituted into variables of an approximate expression held in the computer for drawing auxiliary line to transform the auxiliary line drawn on the user interface screen for a correction such that the auxiliary line in the image projected from the projector through a video cable approaches to a straight line. If this correction causes the auxiliary line to extend beyond the screen of a display, the computer scales down the current user interface screen, and creates a virtual correction area therearound, so that the auxiliary line can be fully displayed within the screen.

Abstract translation: 在用户界面屏幕上显示在计算机上创建的辅助线，并通过投影仪投影到曲面屏幕上。 用户将实数替换为计算机中保持的近似表达式的变量，用于绘制辅助线以变换在用户界面屏幕上绘制的辅助线，以进行校正，使得通过视频电缆投影投影仪的图像中的辅助线 接近直线。 如果这种校正导致辅助线延伸超过显示器的屏幕，则计算机缩小当前用户界面屏幕，并在其周围创建虚拟校正区域，以便辅助线路可以完全显示在屏幕内。