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公开(公告)号：US4623933A
公开(公告)日：1986-11-18
申请号：US566390
申请日：1983-12-28
申请人： Joichi Sato , Ryuji Shiono , Tsutomu Nimura , Toshiaki Isogawa , Mitsuru Sato
发明人： Joichi Sato , Ryuji Shiono , Tsutomu Nimura , Toshiaki Isogawa , Mitsuru Sato
CPC分类号： H03G3/3036 , H03G1/0023 , H04N5/20
摘要： A circuit for controlling the gain of an amplifier typically used in a video camera has a automatic gain control circuit to provide the camera output signal within predetermined limits and a switch to permit exclusion of the automatic gain control feature and the use of a manually variable gain control having a greater range and overlapping that of the automatic gain control to provide further flexibility to the user of the camera so that objects normally too bright or too dark to be accommodated within the range of the automatic gain control circuit can be recorded. Differential amplifiers operating in conjunction with current mirror circuits are provided in both the variable gain amplifier circuit and in the circuit that provides the gain control signal thereto to provide a gain control circuit that lends itself to integrated circuit fabrication.
摘要翻译： 用于控制通常在摄像机中使用的放大器的增益的电路具有自动增益控制电路，用于将相机输出信号提供在预定限度内，并且开关允许排除自动增益控制特征和使用手动可变增益 控制具有更大的范围并且与自动增益控制的范围重叠，从而为摄像机的用户提供更多的灵活性，使得通常太亮或太暗以至于不能容纳在自动增益控制电路的范围内的物体可被记录。 在可变增益放大器电路和向其提供增益控制信号的电路中提供与电流镜电路结合操作的差分放大器，以提供一种增益控制电路，从而将其自身应用于集成电路制造。
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公开(公告)号：US4630116A
公开(公告)日：1986-12-16
申请号：US579107
申请日：1984-02-10
申请人： Toshiaki Isogawa , Ryuji Shiono , Tsutomu Niimura , Joichi Sato , Mitsuru Sato
发明人： Toshiaki Isogawa , Ryuji Shiono , Tsutomu Niimura , Joichi Sato , Mitsuru Sato
CPC分类号： H04N5/148
摘要： A video signal inverting circuit, wherein a pedestal level of an output signal is selectively changed between a posi-mode and a nega-mode. The pedestal level of the output video signal is set equal to the pedestal level of the posi-mode output video signal in the nega-mode in accordance with a nega-mode/posi-mode control signal. In spite of the nega-mode/posi-mode control signal, a level setting circuit for the posi-mode is used during horizontal blanking period in the nega-mode.
摘要翻译： 一种视频信号反相电路，其中输出信号的基准电平在位置模式和负模式之间选择性地改变。 输出视频信号的基准电平根据负模式/位置模式控制信号被设置为等于负模式中的位置模式输出视频信号的基准电平。 尽管存在负模式/位置模式控制信号，但是在负模式的水平消隐期间使用位置模式的电平设置电路。
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公开(公告)号：US4589021A
公开(公告)日：1986-05-13
申请号：US568258
申请日：1984-01-04
申请人： Joichi Sato , Ryuji Shiono , Tsutomu Niimura , Toshiaki Isogawa , Mitsuru Sato
发明人： Joichi Sato , Ryuji Shiono , Tsutomu Niimura , Toshiaki Isogawa , Mitsuru Sato
CPC分类号： H04N5/202
摘要： A circuit having a nonlinear response characteristic provides gamma compensation to a video luminance signal and matches any desired output response curve by selecting the number of diodes connected as series-connected circuits in the compensation circuit. The relationship among the various numbers of series-connected diodes is dependent upon having a current flowing into an output circuit which is the same as a current flowing out of a collector circuit of a differential amplifier, to which the input video luminance signal is applied, and through series-connected diode circuit. These currents are maintained equal by use of a current-mirror circuit, which provides an input current to an output transistor that has in its emitter circuit one of the series-connected diode circuits, and the compensated luminance signal flows in the collector circuit thereof. The differential amplifier is stabilized and balanced by a difference amplifier connected in feedback across the collector leads of the differential amplifier in conjunction with a pedestal clamping synchronization signal and a capacitor to provide a balancing signal at the base lead of the second transistor of the differential transistor amplifier.
摘要翻译： 具有非线性响应特性的电路向视频亮度信号提供伽马补偿，并通过选择在补偿电路中串联连接的电路连接的二极管的数量来匹配任何期望的输出响应曲线。 各种数量的串联二极管之间的关系取决于流入输出电路的电流，该输出电路与从应用输入视频亮度信号的差分放大器的集电极电流流出的电流相同， 并通过串联二极管电路。 这些电流通过使用电流镜电路而保持相等，电流镜电路向输出晶体管提供输入电流，输出晶体管在其发射电路中具有串联二极管电路中的一个，并且经补偿的亮度信号在其集电极电路中流动。 差分放大器通过连接在差分放大器的集电极引线上的差分放大器结合基座钳位同步信号和电容器来稳定和平衡，以在差分晶体管的第二晶体管的基极引线提供平衡信号 放大器
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公开(公告)号：US5307158A
公开(公告)日：1994-04-26
申请号：US26655
申请日：1993-03-05
申请人： Masaaki Tsuruta , Ryuji Shiono , Minoru Morio
发明人： Masaaki Tsuruta , Ryuji Shiono , Minoru Morio
CPC分类号： H04N5/235 , H04N5/335 , H04N5/353 , H04N2209/046
摘要： A plurality of CCD image pickup devices are provided. When the multiplex exposure is executed, the exposure timings of the plurality of image pickup devices are set to different timings. The output signals of the plurality of image pickup devices of different timings are synchronized and synthesized, thereby forming a multiplexed signal.
摘要翻译： 提供了多个CCD图像拾取装置。 当执行多重曝光时，将多个图像拾取装置的曝光定时设置为不同的定时。 不同定时的多个摄像装置的输出信号被同步并合成，从而形成复用信号。
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公开(公告)号：US4471383A
公开(公告)日：1984-09-11
申请号：US383773
申请日：1982-06-01
申请人： Ryuji Shiono , Tadashi Esashika
发明人： Ryuji Shiono , Tadashi Esashika
摘要： Apparatus is provided for automatically controlling or locking the iris aperture of a camera. The brightness level of a signal produced by the camera is detected and an automatic control circuit responds to this detected brightness level to energize an iris drive, thereby establishing the iris aperture. The actual size of that aperture is represented by an aperture signal. This aperture signal is used by a control signal generator to generate a control signal corresponding thereto. A selecting circuit is operable to select either an automatic control mode wherein the iris drive is energized by the detected brightness level of the signal produced by the camera, or an iris lock mode wherein the iris drive is energized to maintain the iris aperture at a fixed size irrespective of changes in that brightness level. An iris lock circuit responds to the selection of the iris lock mode for storing the control signal which is generated just prior to the selection of the iris lock mode, and compares the stored control signal to the aperture signal that is produced during the iris lock mode to energize the iris drive as a function of the difference therebetween. In the iris lock mode the automatic control circuitry is disabled. The iris aperture thus is fixed at a size determined by the stored control signal.
摘要翻译： 设备用于自动控制或锁定相机的光圈孔径。 检测由相机产生的信号的亮度级别，并且自动控制电路响应该检测到的亮度水平以激励光圈驱动器，由此建立光圈孔径。 该孔径的实际尺寸由孔径信号表示。 该孔径信号由控制信号发生器使用以产生对应于其的控制信号。 选择电路可操作以选择自动控制模式，其中通过由相机产生的信号的检测到的亮度水平激励虹膜驱动器，或者虹膜锁定模式，其中虹膜驱动器通电以将虹膜孔保持在固定的 而不管该亮度级别的变化如何。 虹膜锁定电路响应于选择光圈锁定模式，用于存储在选择光圈锁定模式之前产生的控制信号，并将存储的控制信号与在光圈锁定模式期间产生的光圈信号进行比较 根据它们之间的差异来激励光圈驱动器。 在光圈锁定模式下，禁用自动控制电路。 因此，光圈孔径被固定为由存储的控制信号确定的尺寸。
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