公开(公告)号：US5274458A

公开(公告)日：1993-12-28

申请号：US824227

申请日：1992-01-22

申请人： Toshiharu Kondo ,  Shuji Shimizu ,  Katsuaki Hirota ,  Fumiaki Kato

发明人： Toshiharu Kondo ,  Shuji Shimizu ,  Katsuaki Hirota ,  Fumiaki Kato

IPC分类号： H04N5/232 ,  H04N5/765 ,  H04N5/77 ,  H04N9/82 ,  H04N5/30 ,  H04N5/76

CPC分类号： H04N9/82 ,  H04N5/335 ,  H04N5/772 ,  Y10S358/906

摘要： A switching circuit to selectively generate either one of an image pickup signal from an image pickup device and a reproduction video signal in which when the recording mode is set, the switching circuit is set to the side on which the image pickup signal from the image pickup device is supplied. When the reproducing mode is set, the switching circuit is set to the side on which the reproduction video signal is supplied. When the instantaneous reproduction is executed in the recording mode, the optical information from an optical information detecting circuit just before the switching circuit is switched from the side on which the image pickup signal is supplied to the side on which the reproduction video signal is supplied is held. An output of the switching circuit is converted into a digital signal. The digital signal is supplied to a digital signal processing circuit to process the digital signal and is also supplied to the optical information detecting circuit to detect the optical information.

摘要翻译： 一种开关电路，用于选择性地产生来自图像拾取装置的图像拾取信号中的任一个和再现视频信号，其中当记录模式被设置时，切换电路被设置在来自图像拾取器的图像拾取信号的一侧 提供设备 当再现模式被设定时，切换电路被设置在提供再现视频信号的一侧。 当在记录模式下执行瞬时再现时，来自开关电路之前的光学信息检测电路的光学信息从提供摄像信号的一侧切换到提供再现视频信号的一侧的光信息是 保持。 开关电路的输出被转换为数字信号。 数字信号被提供给数字信号处理电路以处理数字信号，并且还被提供给光学信息检测电路以检测光学信息。

公开(公告)号：US5235428A

公开(公告)日：1993-08-10

申请号：US985450

申请日：1992-12-03

申请人： Katsuaki Hirota ,  Akihiro Kikuchi ,  Toshiharu Kondo ,  Takashi Kohashi ,  Fumiaki Kato

发明人： Katsuaki Hirota ,  Akihiro Kikuchi ,  Toshiharu Kondo ,  Takashi Kohashi ,  Fumiaki Kato

IPC分类号： H04N5/232

CPC分类号： H04N5/23212

摘要： A focus detection signal is generated from the video signal produced by a video camera by deriving higher frequency components of that video signal, detecting when those higher frequency components exceed a minimum threshold level, sensing when the video signal exceeds a maximum threshold, and integrating those higher frequency components which exceed the minimum threshold, except during an interval when the video signal exceeds the maximum threshold, thereby producing the focus detection signal.

摘要翻译： 通过导出该视频信号的较高频率分量，检测那些较高频率分量何时超过最小阈值电平，感测视频信号超过最大阈值时的视频信号，并将那些 除了在视频信号超过最大阈值的间隔期间，超过最小阈值的较高频率分量，从而产生焦点检测信号。

公开(公告)号：US5093716A

公开(公告)日：1992-03-03

申请号：US653364

申请日：1991-02-01

申请人： Toshiharu Kondo ,  Akihiro Kikuchi ,  Takashi Kohashi ,  Fumiaki Kato ,  Katsuaki Hirota

发明人： Toshiharu Kondo ,  Akihiro Kikuchi ,  Takashi Kohashi ,  Fumiaki Kato ,  Katsuaki Hirota

IPC分类号： G03B7/28 ,  H04N5/232 ,  H04N5/235 ,  H04N9/73

CPC分类号： H04N5/2351 ,  H04N5/23212 ,  H04N5/2352 ,  H04N9/735

摘要： A color video camera providing a digital video signal has an auto-focus detector, an auto-exposure detector and an auto-white balance detector formed as sections of an optical detector circuit which further has serial input and output ports common to the auto-focus, auto-exposure and auto-white balance detectors, and a system controller which is common to the auto-focus, auto-exposure and auto-white balance detectors and provides control signals therefor through the serial input port while receiving focus, exposure and white-balance detection signals through the serial output port from the respective detectors. Further, an improved exposure control system is provided which compensates for abnormal lighting conditions, such as, back-lighting or excessive front-lighting of the scene in the field of view of the camera.

公开(公告)号：US5144450A

公开(公告)日：1992-09-01

申请号：US660016

申请日：1991-02-25

申请人： Akihiro Kikuchi ,  Toshiharu Kondo ,  Takashi Kohashi ,  Fumiaki Kato ,  Katsuaki Hirota

发明人： Akihiro Kikuchi ,  Toshiharu Kondo ,  Takashi Kohashi ,  Fumiaki Kato ,  Katsuaki Hirota

IPC分类号： H03H17/00 ,  H03H17/02 ,  H03H17/06 ,  H04N5/232 ,  H04N5/335 ,  H04N5/357 ,  H04N5/369 ,  H04N5/372 ,  H04N5/378 ,  H04N7/01

CPC分类号： H04N7/0102 ,  H04N5/23212 ,  H04N7/0135

摘要： A sampling frequency conversion filter circuit permits the same auto focus circuit to be used with CCD imagers having different numbers of pixels per line. The conversion filter converts a digital signal of a first sampling frequency into a second sampling frequency and for providing a digital signal of the first sampling frequency with a predetermined frequency characteristic includes a delay circuit for delaying an input digital signal of the first sampling frequency by a predetermined amount; a first flip-flop for taking in the input digital signal of the first sampling frequency in synchronism with a clock of the second sampling frequency; a second flip-flop for taking in the digital signal of the first sampling frequency delayed by the predetermined amount through the delay circuit with a clock of the second sampling frequency; an adder for adding outputs of the first and flip-flops; and control circuits for controlling inputs of the first and second flip-flops to obtain from the adder circuit an output equivalent to a result obtained by over-sampling the digital signal of the first sampling frequency at a frequency that is a common multiple of the first sampling frequency and the second sampling frequency, and then re-sampling it at the second sampling frequency via a filter having the predetermined frequency characteristic.

公开(公告)号：US5182636A

公开(公告)日：1993-01-26

申请号：US654198

申请日：1991-02-12

申请人： Akihiro Kikuchi ,  Toshiharu Kondo ,  Takashi Kohashi ,  Funiaki Kato ,  Katsuaki Hirota

发明人： Akihiro Kikuchi ,  Toshiharu Kondo ,  Takashi Kohashi ,  Funiaki Kato ,  Katsuaki Hirota

IPC分类号： H04N9/04 ,  H04N5/232 ,  H04N5/235 ,  H04N9/73

CPC分类号： H04N9/735 ,  H04N5/23212 ,  H04N5/235 ,  H04N5/2351

摘要： In a color video camera providing color video signal components corresponding to a light image projected on an image pickup, only the levels of the color video signals components which correspond to at least substantially white regions of the light image are detected, and such detected levels of the color video signal components are integrated so as to obtain average values thereof as white-balance detection signals. The color video signal components which correspond to at least substantially white regions of the light image, and thus have their levels detected, may be those which occur during intervals corresponding to a white-balance detecting area positioned to correspond with a selected white area of the light image. Alternatively, the color video signal components may be sampled to provide pixel-by-pixel values thereof, whereupon, only those pixel-by-pixel values which are determined to be within a predetermined range of white as defined by a black body radiation curve are subjected to integration. The predetermined range is made relatively wide when the valve of the color video signal components deviate substantially from a desired white-balance relationship and the range is reduced as the values of the conponents come near to the desired relationship.

摘要翻译： 在提供与投影在图像拾取器上的光图像相对应的彩色视频信号分量的彩色摄像机中，仅检测对应于光图像的至少基本上白色区域的彩色视频信号分量的电平， 彩色视频信号分量被积分，以获得作为白平衡检测信号的平均值。 对应于光图像的至少基本上白色区域并因此检测到其水平的彩色视频信号分量可以是在对应于被定位成对应于所选择的白色区域的白平衡检测区域的间隔期间发生的 光图像。 或者，可以对彩色视频信号分量进行采样以提供其逐像素值，因此，仅由被确定为由黑体辐射曲线限定的白色的预定范围内的像素逐个值是 受到整合。 当彩色视频信号分量的阀基本上偏离期望的白平衡关系时，预定范围相对较宽，并且随着构件的值接近期望的关系，该范围减小。

公开(公告)号：US07623172B2

公开(公告)日：2009-11-24

申请号：US10545740

申请日：2004-02-20

申请人： Takamasa Wada ,  Eiichi Funatsu ,  Keiji Mabuchi ,  Ken Nakajima ,  Katsuaki Hirota ,  Nobuyuki Satou ,  Takashi Abe ,  Tomoyuki Umeda ,  Nobuo Nakamura ,  Hiroaki Fujita ,  Hiroki Sato

发明人： Takamasa Wada ,  Eiichi Funatsu ,  Keiji Mabuchi ,  Ken Nakajima ,  Katsuaki Hirota ,  Nobuyuki Satou ,  Takashi Abe ,  Tomoyuki Umeda ,  Nobuo Nakamura ,  Hiroaki Fujita ,  Hiroki Sato

IPC分类号： H04N3/14 ,  H04N5/335 ,  H04N5/228

CPC分类号： H04N9/045 ,  H04N5/3456 ,  H04N5/3458 ,  H04N5/347 ,  H04N5/374

摘要： A solid state imaging device having an X-Y addressable solid state imaging device with color filters and a driving unit which reads out pixel information of a same color filter in a unit pixel block as pixel information for one pixel simulatively. A predetermined color coding for the pixels has two rows and two columns. When k is a positive integer equal to or larger than 0, with (2k+3)×(2k+3) pixel blocks as unit pixel blocks, the driving unit reads out pieces of pixel information of the same color filter in each of the unit pixel blocks, the driving unit reads out pieces of pixel information of a same color filter in each of the unit pixel blocks simulatively as pixel information for one pixel in a state in which the unit pixel blocks are laid without overlapping one another, and the driving unit averages the added pieces of pixel information and outputs the averaged pieces of pixel information.

摘要翻译： 一种固态成像装置，具有具有滤色器的X-Y可寻址固态成像装置和驱动单元，其以模拟方式读出单位像素块中的相同滤色器的像素信息作为像素信息。 像素的预定颜色编码具有两行和两列。 当k是等于或大于0的正整数时，以（2k + 3）×（2k + 3）个像素块为单位像素块，驱动单元读出每个像素块中的相同滤色器的像素信息 单位像素块，驱动单元模拟地将每个单位像素块中的相同滤色器的像素信息作为像素信息读出，其中单位像素块被放置在不重叠的状态下的一个像素的像素信息，并且 驱动单元对所附加的像素信息进行平均并输出平均的像素信息。

公开(公告)号：US5005086A

公开(公告)日：1991-04-02

申请号：US318138

申请日：1989-03-02

申请人： Koji Iwamoto ,  Kenichi Hamada ,  Katsuaki Hirota

发明人： Koji Iwamoto ,  Kenichi Hamada ,  Katsuaki Hirota

IPC分类号： H04N5/232

CPC分类号： H04N5/23212

摘要： A focus control system for a video camera determines a first gradient indicative of a change in value of a predetermined frequency component in the video signal for first and second positions obtained from the signal of predetermined frequency component in the video signal sampled at the first lens position and at the second lens position, and determines a second gradient indicative of a change in value of the predetermined frequency component in the video signal for second and third lens positions obtained from the signal of the predetermined frequency component in the video signal sampled at the third lens position point, and the speed of longitudinal movement of the lens is controlled in accordance with changes in the first and second gradients, thereby permitting faster focusing and reducing the amount of overrun of the lens during such focusing.

公开(公告)号：US20060203113A1

公开(公告)日：2006-09-14

申请号：US10545740

申请日：2004-02-20

申请人： Takamasa Wada ,  Eiichi Funatsu ,  Keiji Mabuchi ,  Ken Nakajima ,  Katsuaki Hirota ,  Nobuyuki Satou ,  Takashi Abe ,  Tomoyuki Umeda ,  Nobuo Nakamura ,  Hiroaki Fujita ,  Hiroki Sato

发明人： Takamasa Wada ,  Eiichi Funatsu ,  Keiji Mabuchi ,  Ken Nakajima ,  Katsuaki Hirota ,  Nobuyuki Satou ,  Takashi Abe ,  Tomoyuki Umeda ,  Nobuo Nakamura ,  Hiroaki Fujita ,  Hiroki Sato

IPC分类号： H04N3/14 ,  H04N5/335

CPC分类号： H04N9/045 ,  H04N5/3456 ,  H04N5/3458 ,  H04N5/347 ,  H04N5/374

摘要： When pixels are simply skipped while keeping both an order of pixel information and a spatial positional relation the same as those in all-pixel readout, since a distance between pixels to be read out increases, the Nyquist frequency decreases and aliasing noise increases. A 5×5 pixel block is set as a unit pixel block and pieces of pixel information in first, third, and fifth columns of first, third, and fifth rows of a pixel arrangement are added and outputted as an output in an ath row and an ath column of the unit pixel block. Then, pieces of pixel information in sixth, eighth, and tenth columns of the first, the third, and the fifth rows of the pixel arrangement are added and outputted as an output in the ath row and a bth column of the unit pixel block. Subsequently, pieces of pixel information are added and outputted up to a last column or a column near the last column. Thereafter, pieces of pixel information in the first, the third, and the fifth columns of the sixth, the eighth, and the tenth rows of the pixel arrangement are added and outputted as an output in a bth row and the ath column of the unit pixel block. Subsequently, all arbitrary pixels are read out while repeating the same operation and skipping and adding pieces of pixel information.

摘要翻译： 当像素被简单地跳过同时保持像素信息的顺序和空间位置关系与全像素读出中的顺序相同时，由于要读出的像素之间的距离增加，所以奈奎斯特频率降低并且混叠噪声增加。 将5×5像素块设置为单位像素块，并且将像素布置的第一，第三和第五行的第一，第三和第五列中的像素信息的像素信息相加并输出为运动行中的输出，并且运动 单位像素块的列。 然后，将像素配置的第一，第三和第五行的第六列，第八列和第五列中的像素信息的像素信息相加并输出为单位像素块的运动行和第b列中的输出。 随后，将像素信息添加并输出到最后一列或靠近最​​后一列的列。 此后，将像素配置的第六行，第八行和第十行的第一列，第三列和第五列中的像素信息相加并输出为第b行的输出和单元的运动列 像素块。 随后，在重复相同的操作并跳过和添加像素信息的同时读出所有任意像素。

公开(公告)号：US5543840A

公开(公告)日：1996-08-06

申请号：US28121

申请日：1993-03-09

申请人： Katsuaki Hirota

发明人： Katsuaki Hirota

IPC分类号： G02B7/10 ,  H04N5/232

CPC分类号： G02B7/102

摘要： A lens position adjusting method for flange back adjustment of an inner focus lens assembly, which is suitable for a video camera is disclosed. The method comprises the steps of: moving a variator near to a telephoto end or a wide end; detecting a focal position by moving a focus lens when the variator is moved near to the telephoto end or the wide end; computing a difference in position between the variator and the telephoto end or the wide end, based on a moving distance of the focus lens to the focal position; and determining the position of the telephoto end or the wide end.

摘要翻译： 公开了一种适用于摄像机的内部聚焦透镜组件的凸缘背面调整的透镜位置调节方法。 该方法包括以下步骤：在远摄端或宽端附近移动变换器; 当变倍器靠近望远端或宽端移动时，通过移动聚焦透镜来检测焦点位置; 基于聚焦透镜到焦点位置的移动距离来计算变倍器与望远端或宽端之间的位置差; 并确定长焦端或宽端的位置。

公开(公告)号：US5448295A

公开(公告)日：1995-09-05

申请号：US164848

申请日：1993-12-09

申请人： Katsuaki Hirota

发明人： Katsuaki Hirota

IPC分类号： G02B7/08 ,  G02B7/09 ,  G02B7/28 ,  G03B13/36 ,  H04N5/232 ,  G02B7/10

CPC分类号： G02B7/282 ,  H04N5/23212

摘要： A video camera having an imaging device providing a video signal comprises; lens means for focusing an object leading to the imaging device, signal processor or processing outputs of the imaging device to video signals, focus detection means for detecting focus information of the object, drive means for driving the lens according to outputs of the focus detection means, and control means for controlling the lens position from first position to a predetermined position when the power is supplied.

摘要翻译： 具有提供视频信号的成像装置的摄像机包括： 用于将通向成像装置的物体，信号处理器或成像装置的输出对视频信号进行聚焦的透镜装置，用于检测物体的焦点信息的焦点检测装置，根据焦点检测装置的输出驱动透镜的驱动装置 以及控制装置，用于在供电时控制从第一位置到预定位置的透镜位置。