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91.发明授权Color imaging apparatus including control system for stabilizing phase and frequency of a video signal carrier frequency 失效彩色成像装置包括用于稳定视频信号载波频率的相位和频率的控制系统
公开(公告)号：US4857995A
公开(公告)日：1989-08-15
申请号：US108988
申请日：1987-10-14
IPC分类号： H04N9/077
CPC分类号： H04N9/077
摘要： A color filter has a plurality of succesively arranged recurrent groups of different color stripes. An image pickup tube has a photoelectrical conversion target exposed to light passing through the color filter and an index signal generation pattern. The image pickup tube outputs a signal containing a color signal component determined by a carrier which is modulated with the individual color stripes of each recurrent group of the color filter. The output signal from the image pickup tube also contains an index signal component which depends on the index pattern. A first memory holds at least part of the index signal component. The index signal component held by the memory is periodically updated. A second memory holds a portion of the output signal from the image pickup tube which was obtained under conditions where a predetermined color light illuminates the photoelectrical conversion target via the color filter. A reference signal is generated in accordance with the index signal component read from the first memory and with the signal portion read from the second memory. A color signal is detected from the output signal of the image pickup tube by use of the reference signal.
摘要翻译： 滤色器具有多个不同颜色条纹的连续布置的反复组合。 图像拾取管具有暴露于通过滤色器的光的光电转换目标和索引信号产生模式。 图像拾取管输出包含由通过滤色器的每个复现组的各个色条调制的载体确定的颜色信号分量的信号。 来自图像拾取管的输出信号还包含取决于索引图案的索引信号分量。 第一存储器保持索引信号分量的至少一部分。 由存储器保持的索引信号分量被周期性地更新。 第二存储器保持来自图像拾取管的输出信号的一部分，其在预定的颜色光通过滤色器照射光电转换目标的条件下获得。 根据从第一存储器读取的索引信号分量和从第二存储器读取的信号部分生成参考信号。 通过使用参考信号从图像拾取管的输出信号检测彩色信号。
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92.发明授权Color imaging apparatus including phase control system for maintaining start positions of scanning lines equal to start positions of reference values thereof 失效彩色成像装置包括用于将扫描线的起始位置保持在等于其参考值的开始位置的相位控制系统
公开(公告)号：US4855816A
公开(公告)日：1989-08-08
申请号：US137926
申请日：1987-12-28
IPC分类号： H04N9/077
CPC分类号： H04N9/077
摘要： A color filter has recurrent groups of different color stripes. An image pickup tube has a photoelectrical conversion target exposed to light passing through the color filter and an index signal generation pattern. The image pickup tube outputs a signal containing a color signal component and an index signal component which depends on the index pattern. The index signal component has a phase representing a present start position of each scanning line. A memory holds a portion of the output signal from the image pickup tube corresponding to an initial frame period which occurs under conditions where a predetermined color light is applied to the photoelectrical conversion target via the color filter. A reference signal reflects a signal read out from the memory. A color component is detected from the output signal of the image pickup tube by use of the reference signal. The reference signal contains an index signal component which has a phase representing a start position of each scanning line during the initial frame period. A closed-loop phase control system allows the present start position of each scanning line to remain essentially equal to the start position of the corresponding scanning line during the initial frame period. A phase or level shifter is interposed in a loop of the closed-loop phase control system.
摘要翻译： 彩色滤光片具有不同颜色条纹的反复组合。 图像拾取管具有暴露于通过滤色器的光的光电转换目标和索引信号产生模式。 图像拾取管输出包含依赖于索引图案的颜色信号分量和索引信号分量的信号。 索引信号分量具有表示每条扫描线的当前开始位置的相位。 存储器保持来自图像拾取管的输出信号的一部分对应于在通过滤色器将预定的色光施加到光电转换目标的条件下发生的初始帧周期。 参考信号反映从存储器读出的信号。 通过使用参考信号从图像拾取管的输出信号检测颜色分量。 参考信号包含索引信号分量，其具有表示在初始帧周期期间的每个扫描线的开始位置的相位。 闭环相位控制系统允许每个扫描线的当前开始位置在初始帧周期期间基本上等于相应扫描线的起始位置。 相位或电平移位器插入闭环相位控制系统的环路中。
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93.发明授权
公开(公告)号：US4620221A
公开(公告)日：1986-10-28
申请号：US582226
申请日：1984-02-21
摘要： In a single-tube color imaging apparatus, the pickup tube includes a photoelectrical conversion target and a filter having recurrent groups of different color stripes through which an optical image is passed to the target. The target is scanned by an electron beam to produce a video signal having a frequency inversely proportional to the intervals at which the recurrent groups are arranged. The video signal varies in phase with the relative values of primary color components contained in the image passing through the stripes of each group and in amplitude with the intensity of the primary color components. Prior to normal operation, the target is uniformly illuminated with light of a predetermined color to generate a reference video signal, which is stored in a field memory. During normal operation, the reference signal is repeatedly read out of the memory and compared by frequency and phase comparators with the video signal from the target. Frequency and phase control circuitry responds to the outputs of the comparators by controlling the frequency and phase relationships between the two signals so that they match in frequency and phase before being applied to synchronous detectors.
摘要翻译： 在单管彩色成像装置中，拾取管包括光电转换目标和具有不同颜色条纹的复现组的滤光器，通过该组不同的光学图像被传送到目标。 目标被电子束扫描以产生具有与布置循环组的间隔成反比的频率的视频信号。 视频信号与通过每组的条纹的图像中包含的原色分量的相对值和基本颜色分量的强度的振幅相位变化。 在正常操作之前，用预定颜色的光均匀地照射目标，以产生存储在场存储器中的参考视频信号。 在正常操作期间，参考信号被重复读出存储器，并由频率和相位比较器与来自目标的视频信号进行比较。 频率和相位控制电路通过控制两个信号之间的频率和相位关系来响应比较器的输出，使得它们在施加到同步检测器之前在频率和相位上匹配。
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公开(公告)号：US4227208A
公开(公告)日：1980-10-07
申请号：US942283
申请日：1978-09-14
申请人： Itsuo Takanashi , Koichiro Motoyama , Tadayoshi Miyoshi , Shintaro Nakagaki , Sumio Yokokawa , Kenichi Miyazaki
发明人： Itsuo Takanashi , Koichiro Motoyama , Tadayoshi Miyoshi , Shintaro Nakagaki , Sumio Yokokawa , Kenichi Miyazaki
CPC分类号： H04N9/07 , G02B27/283 , G02B27/46
摘要： An optical comb filter has a plurality of optical comb filter elements disposed successively in the advancing direction of light. The optical comb filter characteristics attenuate and remove specific space frequencies which do not have mutual relationships of odd-number multiples and frequencies of the specific space frequencies. At least one phase plate is interposed between neighboring optical comb filter elements in front and rear positions with respect to the light advancing direction. The phase plate converts a light exiting from the front filter element into a light which is divided in the rear filter element into normal light and abnormal light, exiting with mutually equal light quantity. The normal and abnormal light enters, as incident light, the rear filter element.
摘要翻译： 光梳滤波器具有在光的前进方向上连续设置的多个光梳滤波器元件。 光梳滤波器特性衰减并去除不具有奇数倍和特定空间频率频率的相互关系的特定空间频率。 至少一个相位板相对于光进入方向插在相邻的光梳滤波器元件之间的前后位置。 相位板将从前部滤波器元件射出的光转换为在后部滤波器元件中被分成正常光线和异常光线的光，并以相等的光量退出。 正常和异常光作为入射光进入后过滤元件。
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公开(公告)号：US4215364A
公开(公告)日：1980-07-29
申请号：US016092
申请日：1979-02-28
申请人： Itsuo Takanashi , Shintaro Nakagaki , Tadayoshi Miyoshi , Koichiro Motoyama , Kenichi Miyazaki , Sumio Yokokawa
发明人： Itsuo Takanashi , Shintaro Nakagaki , Tadayoshi Miyoshi , Koichiro Motoyama , Kenichi Miyazaki , Sumio Yokokawa
IPC分类号： H04N9/07
CPC分类号： H04N9/07
摘要： A color television camera has red filter stripes overlying wider blue filter stripes which in turn overlie a green filter layer. Frequency selective decoding circuitry is provided for separating the red, blue and green representative components of the camera signal.
摘要翻译： 彩色电视摄像机具有覆盖更宽的蓝色滤色器条纹的红色滤色器条纹，其又覆盖绿色滤色器层。 提供频率选择解码电路用于分离相机信号的红色，蓝色和绿色代表分量。
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96.发明授权Color camera with stripe filter using controlled bias light for dark scene noise improvement 失效带有条纹滤光片的彩色摄像机，采用受控偏置灯，用于黑暗场景噪音改善
公开(公告)号：US4578699A
公开(公告)日：1986-03-25
申请号：US555863
申请日：1983-11-28
CPC分类号： H04N9/07 , H04N5/2256 , H04N9/735
摘要： A color TV imaging apparatus comprises a TV imaging device for generating a composite color TV video signal by use of a color separation stripe filter, at least two demodulators for individually producing color signal components by demodulating a carrier signal which is generated as an output signal from the imaging device, and a bias light supply device for applying bias light to a photoelectric transducer section of the imaging device through the filter. At least one of the quantity and color temperature of the bias light is set such that the carrier color signals to be demodulated by the demodulators become greater than the peak-to-peak value of noise contained in the signal. The quantity of bias light is adjusted by controlling bias light sources of the bias light supply device, while a color temperature of bias light is selected by means of color temperature conversion filters positioned in light outlet portions of a flat light conducting element which is included in the bias light supply device.
摘要翻译： 一种彩色电视摄像装置，包括：通过使用分色条形滤波器产生复合彩色TV视频信号的TV成像装置;至少两个解调器，用于通过解调作为输出信号产生的载波信号来分别产生彩色信号分量; 成像装置和偏置光供给装置，用于通过滤光器将偏光施加到成像装置的光电变换器部分。 偏置光的数量和色温中的至少一个被设置为使得由解调器解调的载波颜色信号变得大于包含在信号中的噪声的峰 - 峰值。 通过控制偏置光供给装置的偏置光源来调节偏置光的量，同时通过位于平面导光元件的光出射部分中的色温转换滤光片来选择偏置光的色温， 偏光装置。
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公开(公告)号：US4277800A
公开(公告)日：1981-07-07
申请号：US129337
申请日：1980-03-11
申请人： Shintaro Nakagaki , Itsuo Takanashi , Koichiro Motoyama , Tadayoshi Miyoshi , Sumio Yokokawa , Kenichi Miyazaki
发明人： Shintaro Nakagaki , Itsuo Takanashi , Koichiro Motoyama , Tadayoshi Miyoshi , Sumio Yokokawa , Kenichi Miyazaki
摘要： A color television signal generating apparatus comprises a color-resolving striped filter, in a camera tube, for separating the output signal of the camera tube into required signals. The output of the camera tube is a superimposed signal comprising a direct wave signal containing signals of the three primary colors of said addition mixture color, and a high-band signal component comprising a group of modulated color signals resulting from an amplitude modulation of a carrier wave by the signals of two primary colors other than the primary color of the light transmitted through said first filter stripe, said carrier wave having a frequency equal to a space frequency determined by the number of said groups of filter stripes, and said carrier wave also having frequency components which are higher harmonics of the frequency of said carrier wave. The color television signal generating apparatus further comprises a first separation circuit for separating and deriving, out of the output signal of the camera tube, a fundamental wave component signal in which the carrier wave having the frequency equal to the space frequency is amplitude modulated, a second separation circuit for separating and deriving, out of the output signal of the camera tube, a second harmonics wave component signal in which a carrier wave having a frequency twice the space frequency is amplitude modulated, a multiplication circuit for multiplying the output signals of the first and second separation circuits, and a circuit for separating and deriving signals of two primary colors other than the primary color transmitted through the first filter stripe, responsive to the output signals of the multiplication means and the first separation circuit.
摘要翻译： 彩色电视信号发生装置包括在相机管中的分色条纹滤光器，用于将相机管的输出信号分离成所需信号。 相机管的输出是包括包含所述加法混合颜色的三原色的信号的直接波信号的叠加信号，以及包括由载波的幅度调制产生的一组调制的彩色信号的高频带信号分量 通过除了通过所述第一滤波器条纹的光的原色之外的两种原色的信号波，所述载波具有等于由所述滤波器条带组的数量确定的空间频率的频率，并且所述载波也 具有作为所述载波的频率的高次谐波的频率分量。 彩色电视信号发生装置还包括第一分离电路，用于分离和导出相机管的输出信号，其中具有等于空间频率的频率的载波被幅度调制的基波分量信号，a 第二分离电路，用于分离和导出相机管的输出信号中具有频率为空间频率的两倍的载波被调幅的二次谐波分量信号;乘法电路，用于将 第一分离电路和第二分离电路，以及用于分离和导出除了通过第一滤波器条带传输的原色之外的两种原色的信号的电路，其响应于乘法装置和第一分离电路的输出信号。
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公开(公告)号：US4272779A
公开(公告)日：1981-06-09
申请号：US004721
申请日：1979-01-19
申请人： Shintaro Nakagaki , Itsuo Takanashi , Sumio Yokokawa , Tadayoshi Miyoshi , Koichiro Motoyama , Kenichi Miyazaki
发明人： Shintaro Nakagaki , Itsuo Takanashi , Sumio Yokokawa , Tadayoshi Miyoshi , Koichiro Motoyama , Kenichi Miyazaki
CPC分类号： H04N9/07
摘要： A signal processing circuit for a color television camera has filters supplied with a multiplex input signal. The direct wave signal includes a plurality of amplitude-modulated color component signals obtained from a camera tube of a color television camera. The tube filters the high-frequency components of the input signal. Detection and processing circuits detect the output signal of the high-pass filter and produce signals having restored DC components. The circuit provides gamma correction, white clipping, linear clipping, blanking signal mixing, or like signal processing with respect to the produced signal. A low-pass filter passes the input signal from the camera tube and filters the direct wave signal of the input signal. A processing circuit processes the output signals of the low-pass filter, and a matrix circuit matrixes the output signals of the detection and processing circuits to obtain three primary color signals. A color encoder provides a composite color video signal from the three primary color signals produced by the matrix circuit.
摘要翻译： 用于彩色电视摄像机的信号处理电路具有提供有复用输入信号的滤波器。 直接波信号包括从彩色电视摄像机的相机管获得的多个幅度调制色分量信号。 管过滤输入信号的高频分量。 检测和处理电路检测高通滤波器的输出信号并产生具有恢复的DC分量的信号。 该电路针对所产生的信号提供伽马校正，白削波，线性削波，消隐信号混合或类似的信号处理。 低通滤波器通过来自相机管的输入信号并对输入信号的直接波信号进行滤波。 处理电路处理低通滤波器的输出信号，并且矩阵电路对检测和处理电路的输出信号进行矩阵校准，以获得三原色信号。 彩色编码器提供由矩阵电路产生的三原色信号的复合彩色视频信号。
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99.发明授权Circuit for stabilizing the black level in an output signal of a camera tube in a color television camera 失效用于稳定彩色电视摄像机中相机管的输出信号中黑电平的电路
公开(公告)号：US4232331A
公开(公告)日：1980-11-04
申请号：US948253
申请日：1978-10-03
申请人： Koichiro Motoyama , Itsuo Takanashi , Tadayoshi Miyoshi , Shintaro Nakagaki , Sumio Yokokawa , Kenichi Miyazaki
发明人： Koichiro Motoyama , Itsuo Takanashi , Tadayoshi Miyoshi , Shintaro Nakagaki , Sumio Yokokawa , Kenichi Miyazaki
CPC分类号： H04N5/228
摘要： A circuit for stabilizing the black level in an output signal of a camera tube is employed in a color television camera. The camera tube has an optical filter with an optically black part extending in parallel with a beam scanning direction of the camera tube. The stabilizing circuit comprises a clamping circuit for clamping an output signal of the camera tube during a horizontal beam blanking period and for restoring a DC component of the output signal. A circuit responds to supplied sampling pulses during every vertical scanning period, for sampling and holding an output signal of the clamping circuit. A circuit feeds back a substantially negative holding voltage of the sampling and holding circuit, to the clamping circuit.
摘要翻译： 在彩色电视摄像机中采用用于稳定照相机管的输出信号中的黑电平的电路。 相机管具有光学黑色部分的光学滤光器，其与照相机管的光束扫描方向平行延伸。 稳定电路包括钳位电路，用于在水平波束消隐期间钳位相机管的输出信号，并用于恢复输出信号的直流分量。 一个电路在每个垂直扫描周期响应提供的采样脉冲，用于采样和保持钳位电路的输出信号。 电路将采样和保持电路的基本上负的保持电压反馈到钳位电路。
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公开(公告)号：US5087929A
公开(公告)日：1992-02-11
申请号：US637171
申请日：1991-01-03
申请人： Itsuo Takanashi , Takashi Yamamura , Shintaro Nakagaki , Toshikatsu Ichito , Atsushi Nakano , Tadayuki Shimada , Toshio Konno
发明人： Itsuo Takanashi , Takashi Yamamura , Shintaro Nakagaki , Toshikatsu Ichito , Atsushi Nakano , Tadayuki Shimada , Toshio Konno
CPC分类号： G06K15/1295 , G02F1/135
摘要： A method of electrophotographic printing is disclosed. A recording medium comprising a photoconductive member and photo-modulation member laminated to each other, both exhibiting a photoelectric effect and a sensitized member made of a chargeable photoconductive member are arranged so as to face each other. A first electro-magnetic radiation beam (abbreviated in a beam hereinafter) which is intensity-modulated with data to be recorded is radiated to the recording medium at the photoconductive member side thereof to record the data to the photo-modulation member with the photoelectric effect. A second beam of constant intensity is radiated to the recording medium to emit therefrom a third beam exhibiting intensity variation subjected to the recorded data. The sensitized member is exposed with the third beam to form thereon a charge image corresponding to the recorded data. Toner is stacked onto the sensitized member formed with the charge image to form thereon a toner image. The toner image is then transferred onto a printing paper, thus to perform repeated printing utilizing the data once recorded to the recording medium.
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