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公开(公告)号：US07477303B2
公开(公告)日：2009-01-13
申请号：US10674314
申请日：2003-09-30
申请人： Ichiro Tanji , Fumihiko Sudo , Taku Kihara
发明人： Ichiro Tanji , Fumihiko Sudo , Taku Kihara
CPC分类号： H04N5/202
摘要： High frequency components of a video signal are attenuated for avoiding aliasing when the video signal is corrected by a non-linear gamma correction circuit. Such high frequency components arise from the video signal harmonics, and also are generated in image contour processing of the video signal. The high frequency components are band limited, thereby linearizing the gamma correction circuit and preventing aliasing. Up-converting the sampling frequency increases a desired band limitation area and defers the generation of high frequency components that cause aliasing. The non-linear gamma correction function is divided into a plurality of sections which are replaced by respective straight-line segments each represented by a linear expression, and gamma correction is effected with a straight-line segment corresponding to the amplitude of the digital video signal.
摘要翻译： 当视频信号被非线性伽马校正电路校正时，视频信号的高频分量被衰减以避免混叠。 这样的高频分量由视频信号谐波产生，并且也在视频信号的图像轮廓处理中产生。 高频分量是频带限制的，从而线性化伽马校正电路并防止混叠。 上变频采样频率增加了期望的频带限制区域，并且延迟了导致混叠的高频分量的产生。 非线性伽马校正功能被分成多个部分，其被各自由线性表达式表示的直线段代替，并且用对应于数字视频信号的幅度的直线段进行伽马校正 。
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公开(公告)号：US06515699B2
公开(公告)日：2003-02-04
申请号：US08690557
申请日：1996-07-31
申请人： Ichiro Tanji , Fumihiko Sudo , Taku Kihara
发明人： Ichiro Tanji , Fumihiko Sudo , Taku Kihara
IPC分类号： H04N5202
CPC分类号： H04N5/202
摘要： High frequency components of a video signal are attenuated for avoiding aliasing when the video signal is corrected by a non-linear gamma correction circuit. Such high frequency components arise from the video signal harmonics, and also are generated in image contour processing of the video signal. The high frequency components are band limited, thereby linearizing the gamma correction circuit and preventing aliasing. Up-converting the sampling frequency increases a desired band limitation area and defers the generation of high frequency components that cause aliasing. The non-linear gamma correction function is divided into a plurality of sections which are replaced by respective straight-line segments each represented by a linear expression, and gamma correction is effected with a straight-line segment corresponding to the amplitude of the digital video signal.
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3.发明授权
公开(公告)号：US6002796A
公开(公告)日：1999-12-14
申请号：US574520
申请日：1995-12-19
申请人： Seiji Kawa , Fumihiko Sudo , Taku Kihara
发明人： Seiji Kawa , Fumihiko Sudo , Taku Kihara
CPC分类号： H04N5/20
摘要： Video signal compression apparatus for analyzing an input video signal to determine the distribution of signal levels and compressing the input signal as a function of the distribution to produce an output video signal.
摘要翻译： 视频信号压缩装置，用于分析输入视频信号以确定信号电平的分布并根据分布压缩输入信号以产生输出视频信号。
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公开(公告)号：US5381175A
公开(公告)日：1995-01-10
申请号：US42769
申请日：1993-04-06
申请人： Fumihiko Sudo , Taku Kihara
发明人： Fumihiko Sudo , Taku Kihara
CPC分类号： H04N5/3728 , H04N5/367
摘要： A solid state image pickup apparatus comprises a solid state imager having a plurality of pixels and which outputs a signal corresponding to light incident thereon, a sample and hold circuit for sampling and holding analog output signals from respective pixels of the solid state imager in response to a sampling signal, a low-pass filter connected to the analog output of the sample and hold circuit for eliminating a high frequency component therefrom so as to output a filtered signal, an analog-to-digital converter for converting the filtered signal to a digital filtered signal, a memory for storing position data indicative of a position of a defective pixel, a circuit for stopping the supply of the sampling signal to the sample and hold circuit in response to the position data indicating a defective pixel so that the output signal from the defective pixel is replaced with the analog output signal from a pixel read immediately prior thereto, an interpolating circuit connected to the analog-to-digital converter for interpolating a digital signal corresponding to the position data indicating a defective pixel by using the digital signals corresponding to other pixels surrounding the defective pixel so as to generate an interpolated signal, and a switch for selectively outputting the digital filtered signal and the interpolated signal in accordance with the position data.
摘要翻译： 固体摄像装置包括具有多个像素的固态成像器，其输出对应于入射光的信号，采样和保持电路，用于对固态成像器的各个像素进行采样和保持模拟输出信号，以响应于 采样信号，连接到采样和保持电路的模拟输出的低通滤波器，用于从其中消除高频分量以便输出滤波后的信号;模数转换器，用于将滤波后的信号转换为数字 滤波信号，用于存储表示缺陷像素的位置的位置数据的存储器，用于响应于指示缺陷像素的位置数据停止向取样和保持电路提供采样信号的电路，使得来自 缺陷像素被来自紧邻其前面读取的像素的模拟输出信号替代，连接到ana的内插电路 对数数字转换器，用于通过使用与缺陷像素周围的其他像素相对应的数字信号来内插对应于指示缺陷像素的位置数据的数字信号，以产生内插信号;以及开关，用于选择性地输出数字滤波 信号和内插信号。
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公开(公告)号：US20060061666A1
公开(公告)日：2006-03-23
申请号：US10527934
申请日：2004-07-16
申请人： Katsumi Kaneko , Taku Kihara , Fumihiko Sudo
发明人： Katsumi Kaneko , Taku Kihara , Fumihiko Sudo
IPC分类号： H04N5/228
CPC分类号： H04N5/23245 , H04N5/23293 , H04N5/265 , H04N5/272 , H04N5/772 , H04N5/775
摘要： An image signal generation portion 10 generates an image signal DVb of a variable frame-rate picked-up image whose frame rate can be varied. A frame rate conversion portion 30 converts a frame rate of an image signal DVu supplied to it into a frame rate of the image signal DVb and synchronizes them to provide an image signal DVw. A monitor image signal generation portion 40 uses the image signals DVb and DVw to generate an image signal DVmix of an image in which an image based on the image signal DVb and an image based on the image signal DVw are mixed and output it as a monitor image signal DMTout or SMTout. Alternatively, it generates an image signal DVwp of an image in which a part of an image based on the image signal DVb is replaced by an image based on the image signal DVw and outputs it as the monitor image signal DMTout or SMTout. It is possible to simultaneously display a variable frame-rate picked-up image and an image having a different frame rate.
摘要翻译： 图像信号生成部分10生成可以改变帧速率的可变帧率拍摄图像的图像信号DVb。 帧率转换部分30将提供给它的图像信号DVu的帧速率转换为图像信号DVb的帧速率，并使其同步以提供图像信号DVw。 监视图像信号生成部分40使用图像信号DVb和DVw来产生其中基于图像信号DVb的图像和基于图像信号DVw的图像被混合的图像的图像信号DVmix，并将其作为监视器输出 图像信号DMTout或SMTout。 或者，它产生图像的图像信号DVwp，其中基于图像信号DVb的图像的一部分图像被基于图像信号DVw的图像替换，并且将其作为监视图像信号DMTout或者SMTout输出。 可以同时显示可变帧率拍摄图像和具有不同帧速率的图像。
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6.发明授权Matching frame rates of a variable frame rate image signal with another image signal 失效可变帧率图像信号与另一图像信号匹配帧速率公开(公告)号：US07733378B2
公开(公告)日：2010-06-08
申请号：US10527934
申请日：2004-07-16
申请人： Katsumi Kaneko , Taku Kihara , Fumihiko Sudo
发明人： Katsumi Kaneko , Taku Kihara , Fumihiko Sudo
IPC分类号： H04N5/225
CPC分类号： H04N5/23245 , H04N5/23293 , H04N5/265 , H04N5/272 , H04N5/772 , H04N5/775
摘要： An image signal generation portion 10 generates an image signal DVb of a variable frame-rate picked-up image whose frame rate can be varied. A frame rate conversion portion 30 converts a frame rate of an image signal DVu supplied to it into a frame rate of the image signal DVb and synchronizes them to provide an image signal DVw. A monitor image signal generation portion 40 uses the image signals DVb and DVw to generate an image signal DVmix of an image in which an image based on the image signal DVb and an image based on the image signal DVw are mixed and output it as a monitor image signal DMTout or SMTout. Alternatively, it generates an image signal DVwp of an image in which a part of an image based on the image signal DVb is replaced by an image based on the image signal DVw and outputs it as the monitor image signal DMTout or SMTout. It is possible to simultaneously display a variable frame-rate picked-up image and an image having a different frame rate.
摘要翻译： 图像信号生成部分10生成可以改变帧速率的可变帧率拍摄图像的图像信号DVb。 帧率转换部分30将提供给它的图像信号DVu的帧速率转换为图像信号DVb的帧速率，并使其同步以提供图像信号DVw。 监视图像信号生成部分40使用图像信号DVb和DVw来产生其中基于图像信号DVb的图像和基于图像信号DVw的图像被混合的图像的图像信号DVmix，并将其作为监视器输出 图像信号DMTout或SMTout。 或者，它产生图像的图像信号DVwp，其中基于图像信号DVb的图像的一部分图像被基于图像信号DVw的图像替换，并且将其作为监视图像信号DMTout或者SMTout输出。 可以同时显示可变帧率拍摄图像和具有不同帧速率的图像。
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公开(公告)号：US5349381A
公开(公告)日：1994-09-20
申请号：US23931
申请日：1993-02-26
申请人： Hideaki Murayama , Taku Kihara , Fumihiko Sudo , Takashi Asaida
发明人： Hideaki Murayama , Taku Kihara , Fumihiko Sudo , Takashi Asaida
CPC分类号： H04N9/045 , H04N2209/046
摘要： In a video camera having three image pickup devices in which a pixel of one channel of channels forming three primary colors is spatially displaced from other pixels of two channels by 1/2 pixel, when three primary color signals output from the three image pickup devices are converted into digital three primary color signals, an aperture signal is formed from the digital three primary color signals, the aperture signal output is added to the digital three primary color signals and a digital video signal of a predetermined format is formed from the added signal, a clock frequency of an aperture signal forming circuit is set to be twice the clock frequencies of the image pickup devices, an A/D converting circuit and a video signal forming circuit.
摘要翻译： 在具有三个图像拾取装置的摄像机中，其中形成三原色的一个通道的像素与两个通道的其他像素空间位移1/2像素，当从三个图像拾取装置输出的三个原色信号是 转换为数字三原色信号，通过数字三原色信号形成孔径信号，将孔径信号输出添加到数字三原色信号，并从加入的信号形成预定格式的数字视频信号， 孔径信号形成电路的时钟频率被设定为图像拾取器件，A / D转换电路和视频信号形成电路的时钟频率的两倍。
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公开(公告)号：US07576782B2
公开(公告)日：2009-08-18
申请号：US10892635
申请日：2004-07-16
CPC分类号： H04N5/77 , H04N5/23203 , H04N5/23245 , H04N5/23293 , H04N5/262 , H04N5/781 , H04N5/85 , H04N7/0105
摘要： An image signal generator generates an imaging signal having a frame rate that is controlled to be variable. A frame rate converter generates a monitor image signal. Upon receiving communication information from an external source, a controller controls the operations of the image signal generator and the frame rate converter on the basis of the communication information. When an instruction to specify the frame rate of the monitor image signal is given from a user interface, the controller controls the frame rate converter to generate a monitor image signal having a specified frame rate by giving priority to this instruction over the communication information.
摘要翻译： 图像信号发生器生成具有被控制为可变的帧速率的成像信号。 帧速率转换器产生监视图像信号。 在从外部源接收到通信信息时，控制器基于通信信息控制图像信号发生器和帧速率转换器的操作。 当从用户接口给出指定监视图像信号的帧速率的指令时，控制器通过对通信信息优先指定该指令来控制帧速率转换器以产生具有指定帧率的监视图像信号。
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9.发明申请Video-signal-processing device, imaging apparatus using the same, and method for processing video signal 有权视频信号处理装置，使用其的成像装置以及视频信号的处理方法公开(公告)号：US20070046793A1
公开(公告)日：2007-03-01
申请号：US11511487
申请日：2006-08-29
申请人： Fumihiko Sudo
发明人： Fumihiko Sudo
IPC分类号： H04N9/64
CPC分类号： H04N9/68
摘要： A video-signal-processing device has luminance conversion section that performs level compression on three input primary-color signals of a color video signal at a same luminance adjustment compression ratio with a hue and a saturation of the color video signal being kept constant, thereby generating three compressed primary-color signals. The device also has saturation conversion section that performs level conversion on the three compressed primary-color signals by using a saturation compression ratio if a maximum level of at least one of the three compressed primary-color signals exceeds a first level. The saturation conversion section sets the saturation compression ratio by using a minimum level one of the three compressed primary-color signals.
摘要翻译： 视频信号处理装置具有亮度转换部分，以相同的亮度调整压缩比对彩色视频信号的三个输入原色信号进行电平压缩，色彩和彩色视频信号的饱和度保持恒定，从而 产生三个压缩的原色信号。 该装置还具有饱和转换部分，如果三个压缩原色信号中的至少一个的最大电平超过第一电平，则通过使用饱和压缩比对三个压缩的原色信号执行电平转换。 饱和转换部分通过使用三个压缩的原色信号中的最小级别1来设置饱和压缩比。
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公开(公告)号：US20050046701A1
公开(公告)日：2005-03-03
申请号：US10891858
申请日：2004-07-15
CPC分类号： H04N5/2621 , H04N5/262
摘要： A preprocessor performs a signal processing operation by using an image signal DVa generated by picking up a subject image. A frame adder adds frames of an image signal DVb generated by the preprocessor so as to generate an image signal DVc with a changed frame rate. When changing the setting of the signal processing operation of the preprocessor, the signal processing operation is restarted with the new setting at the start or at the end of a frame addition period (in units of frame addition periods) of the frame adder based on a determination signal indicating the frame addition period.
摘要翻译： 预处理器通过使用通过拾取被摄体图像而产生的图像信号DVa执行信号处理操作。 帧加法器将由预处理器生成的图像信号DVb的帧相加，以便产生具有改变的帧速率的图像信号DVc。 当改变预处理器的信号处理操作的设置时，信号处理操作在帧加法器的帧相加周期（以帧相加周期为单位）的开始或结束时基于a 指示帧添加周期的确定信号。
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