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1.发明授权Color video camera for generating a luminance signal with unattenuated harmonics 失效彩色摄像机，用于产生具有不衰减谐波的亮度信号公开(公告)号：US06788342B1
公开(公告)日：2004-09-07
申请号：US09594260
申请日：2000-06-15
申请人： Hiroaki Sugiura , Katsumi Asakawa
发明人： Hiroaki Sugiura , Katsumi Asakawa
IPC分类号： H04N909
CPC分类号： H04N9/045 , H04N2209/049
摘要： The outputs of N kinds of spectral response characteristics from an image sensor are passed through low-pass filters to obtain N kinds of outputs from the 1st through Nth, and the output signal of a pixel of interest having the Kth (1≦K≦N) spectral response characteristic is multiplied by the ratio of the low-pass filter output of the image sensor output at the coordinates of the pixel of interest to the Kth low-pass filter output at the coordinates of the pixel of interest, thereby the luminance signal with alleviated attenuation of the harmonics components is obtained.
摘要翻译： 来自图像传感器的N种频谱响应特性的输出通过低通滤波器，以从第1到第N发出N种输出，并且感兴趣像素的输出信号具有Kth（1 <= K < = N）频谱响应特性乘以感兴趣像素的坐标处的图像传感器输出的低通滤波器输出与感兴趣像素的坐标处的第K个低通滤波器输出的比率，从而 获得具有减轻谐波分量衰减的亮度信号。
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2.发明授权Color video camera for generating a luminance signal with unattenuated harmonics 失效彩色摄像机，用于产生具有不衰减谐波的亮度信号
公开(公告)号：US6108038A
公开(公告)日：2000-08-22
申请号：US354848
申请日：1999-07-16
申请人： Hiroaki Sugiura , Katsumi Asakawa
发明人： Hiroaki Sugiura , Katsumi Asakawa
CPC分类号： H04N9/045 , H04N2209/049
摘要： The outputs of N kinds of spectral response characteristics from an image sensor are passed through low-pass filters to obtain N kinds of outputs from the 1st through Nth, and the output signal of a pixel of interest having the Kth (1.ltoreq.K.ltoreq.N) spectral response characteristic is multiplied by the ratio of the low-pass filter output of the image sensor output at the coordinates of the pixel of interest to the Kth low-pass filter output at the coordinates of the pixel of interest, thereby the luminance signal with alleviated attenuation of the harmonics components is obtained.
摘要翻译： 来自图像传感器的N种频谱响应特性的输出通过低通滤波器以获得从第1到第N的N种输出，并且感兴趣像素的输出信号具有第K个（1≤K
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公开(公告)号：US6072458A
公开(公告)日：2000-06-06
申请号：US842400
申请日：1997-04-24
申请人： Katsumi Asakawa , Hiroaki Ishitani , Kozo Ishida , Kouhei Tamano , Shigeharu Yoshikawa , Hiroaki Sugiura
发明人： Katsumi Asakawa , Hiroaki Ishitani , Kozo Ishida , Kouhei Tamano , Shigeharu Yoshikawa , Hiroaki Sugiura
CPC分类号： H04N9/3105 , G09G3/36 , H04N9/3144 , G09G2320/041 , G09G3/3607 , G09G3/3655
摘要： A projection-type liquid crystal display device having a light source for emitting a luminous flux; a liquid crystal light valve for modulating the luminous flux emitted by the light source means; a liquid crystal drive circuit for applying the common voltage to the common electrode and the video signal to the source electrode; a projection lens for projecting the luminous flux modulated by the liquid crystal light valve onto a screen; a liquid crystal temperature detector for detecting temperature in the vicinity of the liquid crystal light valve; and a controller. The controller controls the common voltage and/or the source voltage on the basis of values detected by the liquid crystal temperature detector in such a way that fluctuation in the light transmittance of the liquid crystal light valve means is reduced.
摘要翻译： 一种具有用于发射光通量的光源的投影型液晶显示装置; 用于调制由光源装置发射的光束的液晶光阀; 用于将公共电压施加到所述源电极的液晶驱动电路和所述视频信号; 投影透镜，用于将由液晶光阀调制的光束投影到屏幕上; 用于检测液晶光阀附近的温度的液晶温度检测器; 和控制器。 控制器基于由液晶温度检测器检测的值以使液晶光阀装置的透光率的波动减小的方式控制公共电压和/或源极电压。
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公开(公告)号：US5652620A
公开(公告)日：1997-07-29
申请号：US485908
申请日：1995-06-07
申请人： Hiroaki Sugiura , Katsumi Asakawa
发明人： Hiroaki Sugiura , Katsumi Asakawa
CPC分类号： H04N9/045 , H04N2209/049
摘要： The outputs of N kinds of spectral response characteristics from an image sensor are passed through low-pass filters to obtain N kinds of outputs from the 1st through Nth, and the output signal of a pixel of interest having the Kth (1.ltoreq.K.ltoreq.N) spectral response characteristic is multiplied by the ratio of the low-pass filter output of the image sensor output at the coordinates of the pixel of interest to the Kth low-pass filter output at the coordinates of the pixel of interest, thereby the luminance signal with alleviated attenuation of the harmonics components is obtained.
摘要翻译： 来自图像传感器的N种频谱响应特性的输出通过低通滤波器以获得从第1到第N的N种输出，并且感兴趣像素的输出信号具有第K个（1≤K
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公开(公告)号：US5450124A
公开(公告)日：1995-09-12
申请号：US10069
申请日：1993-01-27
申请人： Hiroaki Sugiura , Katsumi Asakawa
发明人： Hiroaki Sugiura , Katsumi Asakawa
CPC分类号： H04N9/045 , H04N2209/049
摘要： The outputs of N kinds of spectral response characteristics from an image sensor are passed through low-pass filters to obtain N kinds of outputs from the 1st through Nth, and the output signal of a pixel of interest having the Kth (1.ltoreq.K.ltoreq.N) spectral response characteristic is multiplied by the ratio of the low-pass filter output of the image sensor output at the coordinates of the pixel of interest to the Kth low-pass filter output at the coordinates of the pixel of interest, thereby the luminance signal with alleviated attenuation of the harmonics components is obtained.
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6.发明授权Color video camera for generating a Luminance signal with unattenuated harmonics 失效彩色摄像机，用于产生具有未衰减谐波的亮度信号
公开(公告)号：US5966170A
公开(公告)日：1999-10-12
申请号：US831488
申请日：1997-03-31
申请人： Hiroaki Sugiura , Katsumi Asakawa
发明人： Hiroaki Sugiura , Katsumi Asakawa
CPC分类号： H04N9/045 , H04N2209/049
摘要： The outputs of N kinds of spectral response characteristics from an image sensor are passed through low-pass filters to obtain N kinds of outputs from the 1st through Nth, and the output signal of a pixel of interest having the Kth (1.ltoreq.K.ltoreq.N) spectral response characteristic is multiplied by the ratio of the low-pass filter output of the image sensor output at the coordinates of the pixel of interest to the Kth low-pass filter output at the coordinates of the pixel of interest, thereby the luminance signal with alleviated attenuation of the harmonics components is obtained.
摘要翻译： 来自图像传感器的N种频谱响应特性的输出通过低通滤波器以获得从第1到第N的N种输出，并且感兴趣像素的输出信号具有第K个（1≤K
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公开(公告)号：US09039199B2
公开(公告)日：2015-05-26
申请号：US13686705
申请日：2012-11-27
申请人： Katsumi Asakawa
发明人： Katsumi Asakawa
CPC分类号： G03B21/2053 , G03B21/2086 , G09G3/3413 , H04N9/3155 , H04N9/3158 , H04N9/3182 , H04N9/3194 , H04N9/643 , H04N9/68 , H04N9/7933
摘要： A projector includes a light modulation part modulating light generated by a light source part, a video signal processing part processing a video signal to be input, and a projection optical system projecting the light modulated by the light modulation part onto an external projection target to obtain a projected video image. The video signal processing part includes a blue light effect alleviating part alleviating effects of blue light on retinas. In a case where among a red signal, a green signal, and a blue signal included in a video signal, only a ratio of the blue signal is high, the blue light effect alleviating part generates a blue light effect alleviating signal for controlling the light source part to reduce the brightness of the projected video image as a whole.
摘要翻译： 投影机包括调制由光源部分产生的光的光调制部分，处理要输入的视频信号的视频信号处理部分和将由光调制部分调制的光投影到外部投影对象上的投影光学系统，以获得 投影视频图像。 视频信号处理部分包括蓝光效果减轻部分，以减轻蓝光对视网膜的影响。 在包括在视频信号中的红色信号，绿色信号和蓝色信号中，只有蓝色信号的比例高的情况下，蓝色光效果缓解部分产生用于控制光的蓝色光效果缓解信号 源部分，以降低整个投影视频图像的亮度。
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8.发明申请公开(公告)号：US20060187425A1
公开(公告)日：2006-08-24
申请号：US11407140
申请日：2006-04-20
申请人： Kazuaki Matoba , Junichi Nose , Junji Tada , Kouhei Tamano , Katsumi Asakawa
发明人： Kazuaki Matoba , Junichi Nose , Junji Tada , Kouhei Tamano , Katsumi Asakawa
IPC分类号： G03B21/22
CPC分类号： G09G5/006 , G06F3/14 , G09G3/002 , H04N5/74 , H04N7/17318 , H04N9/3179 , H04N21/4122 , H04N21/4143 , H04N21/4788
摘要： A projector comprises an optical engine which projects an image based on a video signal; a circuit section which controls operation of the optical engine; a power source which supplies electric power to the circuit section; a network interface, through which the circuit section communicates with a remote network terminal device; and a hub which is connected to the network interface and includes a plurality of ports. The network interface communicates with the remote network terminal device through one of the ports of the hub. Further, the power source of the projector supplies electric power to the hub.
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公开(公告)号：US06634757B2
公开(公告)日：2003-10-21
申请号：US09951543
申请日：2001-09-14
申请人： Katsumi Asakawa
发明人： Katsumi Asakawa
IPC分类号： G03B2120
摘要： A projection display apparatus with a light source, a light valve and an optical system for projecting an image formed in an image-forming plane of the light valve onto a screen is disclosed. The projection display apparatus includes a first processor for calculating an area of an image projected onto the screen, a photometer for measuring illuminance in the neighborhood of the image projected onto the screen, a second processor for calculating a black-level correction value from the area of the image calculated by the first processor and the illuminance measured by the photometer, and a light-source-power controller for controlling power supplied to the light source on the basis of the black-level correction value calculated by the second processor.
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公开(公告)号：US6072459A
公开(公告)日：2000-06-06
申请号：US959232
申请日：1997-10-28
CPC分类号： G02F1/133382 , G03B21/16 , H04N9/3105 , H04N9/312 , H04N9/3144
摘要： A projection-type liquid crystal display apparatus that prevents deterioration of a projected image occurring attributable to lowering of the temperature of a liquid crystal panel, the difference in the temperature between the liquid crystal panels and temperature inclination in the liquid crystal panel. A projection-type liquid crystal display apparatus having a light source 1, liquid crystal panels 12, 13 and 14 for modulating a light beam emitted by the light source 1, a projection lens 21 for projecting the modulated light beam onto a screen 28, temperature detectors 25, 26 and 27 for detecting the temperatures of portions adjacent to the liquid crystal panels 12, 13 and 14, heater elements 18, 19 and 20 disposed adjacent to image forming surfaces of the liquid crystal panels 12, 13 and 14 and on a light path of a light beam emitted from the light source 1, a drive circuit 40 for operating the heater elements 18, 19 and 20 and a control unit 35 for controlling the heat generating performance of the heater elements 18, 19 and 20 in accordance with values detected by the temperature detectors 25, 26 and 27.
摘要翻译： 一种投影型液晶显示装置，其防止由于液晶面板的温度降低而引起的投射图像的劣化，液晶面板之间的温度差异和液晶面板中的温度倾斜。 具有用于调制由光源1发射的光束的光源1，液晶面板12,13和14的投射型液晶显示装置，用于将调制光束投射到屏幕28上的投影透镜21，温度 用于检测与液晶面板12,13和14相邻的部分的温度的检测器25,26和27，与液晶面板12,13和14的图像形成表面相邻设置的加热器元件18,19和20，以及 从光源1发射的光束的光路，用于操作加热器元件18,19和20的驱动电路40以及用于控制加热器元件18,19和20的发热性能的控制单元35，根据 由温度检测器25,26和27检测的值。
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