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1.发明授权Video signal compensator for compensating differential picture brightness of an optical image due to uneven illumination and method 失效视频信号补偿器，用于补偿因不均匀照明而导致的光学图像的差分图像亮度和方法
公开(公告)号：US6100920A
公开(公告)日：2000-08-08
申请号：US228773
申请日：1999-01-11
IPC分类号： H04N7/18
CPC分类号： H04N7/18
摘要： A video signal compensator and method for compensating for differential picture brightness of an optical image due to uneven illumination is shown. The video signal compensator includes a device for generating a compensating signal substantially representing at least one parameter of a compensating waveform required to produce a video signal representing an optical image having a substantially uniform brightness. An adder operatively coupled to the compensating signal generating device and a video signal adds the compensating signal and the video signal to produce a compensating video signal used as an input to a video signal processor adjusting its gain both vertically and horizontally compensated by increasing the gain of the video signal representing that part of the optical image which is less bright than a reference and reducing the gain of the video signal representing that part of the optical image which is brighter than a reference compensating the video signal to represent an optical image having a substantially uniform brightness. The compensating signal can be generated by either an analog signal generating device or a digital signal processing device.
摘要翻译： 示出了由于不均匀照明而补偿光学图像的差分图像亮度的视频信号补偿器和方法。 视频信号补偿器包括用于产生基本上表示产生表示具有基本均匀亮度的光学图像的视频信号所需的补偿波形的至少一个参数的补偿信号的装置。 可操作地耦合到补偿信号产生装置和视频信号的加法器将补偿信号和视频信号相加以产生用作视频信号处理器的输入的补偿视频信号，其通过增加增益来垂直和水平补偿调整其增益 所述视频信号表示所述光学图像的比基准亮度少的部分，并且减少表示所述光学图像部分比所述视频信号更亮的部分的视频信号的增益，以补偿所述视频信号以表示具有基本上 均匀的亮度。 补偿信号可以由模拟信号产生装置或数字信号处理装置产生。
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公开(公告)号：US4028730A
公开(公告)日：1977-06-07
申请号：US687314
申请日：1976-05-17
申请人： Frederick A. Miller
发明人： Frederick A. Miller
CPC分类号： H04N5/2252 , A61B1/042
摘要： A vidicon camera adapted for use in a direct wire television system and having a vidicon tube, a metal housing having means defining an opening therethrough to permit an optical image to be focused on the imaging surface of the vidicon tube, a first printed circuit board having an aperture of sufficient size to permit the optical image to pass therethrough positioned in the housing between the housing opening and the imaging surface of the vidicon tube wherein the first printed circuit board including preamplifier means electrically connected to the vidicon tube for receiving composite video signals and producing amplified in-phase adapted composite video signals, a second printed circuit board positioned between the end of the vidicon tube opposite the end having the imaging surface and the housing, wherein the second printed circuit board includes amplifier means for amplifying in-phase the composite video signals with a predetermined gain, emitter follower amplifying means electrically connected to the amplifier means and adapted to drive a direct wire with the amplified composite video signal and conductor means electrically connected between the vidicon tube, the first and second printed circuit boards and a remote television system is shown.
摘要翻译： 一种视频摄像机，适用于直接有线电视系统并具有摄像管，金属外壳具有限定穿过其中的开口的装置，以允许光学图像聚焦在摄像管的成像表面上;第一印刷电路板，其具有 具有足够尺寸的孔，以允许光学图像通过其中定位在壳体中的壳体开口和摄像管的成像表面之间，其中包括前置放大器装置的第一印刷电路板电连接到用于接收复合视频信号的视频管， 产生放大的同相适配的复合视频信号，第二印刷电路板，位于与具有成像表面的端部相对的摄像管的端部与壳体之间，其中第二印刷电路板包括用于同时放大复合材料的放大器装置 具有预定增益的视频信号，射极跟随器放大装置 其连接到放大器装置并且适于用放大的复合视频信号驱动直接导线，并且电连接在摄像管，第一和第二印刷电路板和远程电视系统之间的导体装置被示出。
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公开(公告)号：USD316267S
公开(公告)日：1991-04-16
申请号：US203273
申请日：1988-06-07
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4.发明授权Bridge rectifier for selectively providing a full-wave or a half-wave rectified voltage 失效用于选择性地提供全波或半波整流电压的桥式整流器
公开(公告)号：US4432034A
公开(公告)日：1984-02-14
申请号：US307003
申请日：1981-09-30
CPC分类号： H02M7/1552
摘要： An automatic power reduction circuit having a single silicon controlled rectifier in one leg of a bridge rectifier which is gated off when a capacitor reaches a predetermined voltage level so as to switch automatically the bridge output from a full-wave rectifier to a half-wave rectifier. An auxiliary silicon controlled rectifier is also provided to facilitate the quick discharge of the capacitor so as to reset the circuit to its initial state, thereby allowing fast, repeated operations and preventing malfunctioning upon a loss of power.
摘要翻译： 一种自动功率降低电路，其具有在桥式整流器的一个支路中的单个可控硅整流器，当电容器达到预定电压电平时门控整流器被选通，以便自动将桥式整流器输出从全波整流器切换到半波整流器 。 还提供辅助可控硅整流器以便于电容器的快速放电，以便将电路复位到其初始状态，从而允许快速，重复的操作并且防止在功率损失时的故障。
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公开(公告)号：US4300167A
公开(公告)日：1981-11-10
申请号：US119318
申请日：1980-02-07
CPC分类号： H04N5/238
摘要： An automatic iris control system adapted to be connected between a video camera and optical input device which produces an optical image from a light directed upon and reflected from a subject wherein the optical image is directed onto the surface of an electronic imaging tube in the video camera and the optical image has a wide variation of reflected light due to variations in distance of the subject from the light source and wherein the automatic iris control system has an adjustable iris and drive motor located between the surface of the electronic imaging tube and optical input device for dynamically varying the intensity of the optical image applied to the electronic imaging tube of the video camera, a light intensity programming circuit for establishing a desired light intensity level on the surface of the electronic imaging tube of the video camera, and an automatic iris control circuit having a low gain amplifier, a weighted peak response detector, a comparator, a circuit for controlling current to the iris drive motor and a circuit for providing a feedback signal representing the direction in which the iris must be adjusted by the motor to control the light intensity on the surface of the electronic imaging tube of the video camera is shown.
摘要翻译： 一种自动光圈控制系统，其适于连接在摄像机和光学输入设备之间，该光学输入设备从对象指向和反射的光产生光学图像，其中光学图像被引导到摄像机中的电子成像管的表面上 并且光学图像由于被摄体距离光源的距离的变化而具有很大的反射光的变化，并且其中自动光圈控制系统具有位于电子成像管的表面与光学输入装置之间的可调节虹膜和驱动电动机 用于动态地改变施加到摄像机的电子成像管的光学图像的强度，用于在摄像机的电子成像管的表面上建立期望的光强度水平的光强度编程电路和自动光圈控制 具有低增益放大器的电路，加权峰值响应检测器，比较器，c的电路 将电流控制到虹膜驱动电动机，以及用于提供代表通过电动机必须调整光圈的方向的反馈信号以控制摄像机的电子成像管的表面上的光强度的电路。
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公开(公告)号：US4243765A
公开(公告)日：1981-01-06
申请号：US755319
申请日：1976-12-29
IPC分类号： C08F279/04
CPC分类号： C08F279/04
摘要： Rubber concentrates for use in reinforcing acrylonitrile and styrene-containing polymers are prepared by graft polymerizing an acrylonitrile-styrene polymer on a rubber latex wherein a portion of the polymer is chemically combined with the rubber and a portion of the acrylonitrile-styrene polymer is not chemically combined. The uncombined or matrix polymer is of relatively low molecular weight.
摘要翻译： 用于增强丙烯腈和含苯乙烯的聚合物的橡胶浓缩物通过在橡胶胶乳上接枝聚合丙烯腈 - 苯乙烯聚合物来制备，其中一部分聚合物与橡胶化学结合，一部分丙烯腈 - 苯乙烯聚合物不是化学 结合在一起 未组合或基质聚合物分子量相对较低。
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公开(公告)号：US3370666A
公开(公告)日：1968-02-27
申请号：US52957666
申请日：1966-02-23
IPC分类号： B62D53/08
CPC分类号： B62D53/0864
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公开(公告)号：US1565941A
公开(公告)日：1925-12-15
申请号：US66030223
申请日：1923-08-31
发明人： HUNT WILLIAM W
IPC分类号： A43B21/06
CPC分类号： A43B21/06
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公开(公告)号：US4344092A
公开(公告)日：1982-08-10
申请号：US199380
申请日：1980-10-21
申请人： Frederick A. Miller
发明人： Frederick A. Miller
CPC分类号： H04N5/228 , A61B1/042 , H04N5/2251
摘要： A miniature video camera means adapted for use in a video system having a video imaging means for producing an electrical video signal, a housing means defining an opening therethrough to permit an optical image from an optical device to be focused on an imaging surface of the video imaging means and circuit means formed into a geometric shape which defines a passageway of a geometrical dimension to permit the optical image to pass therethrough and wherein the circuit means is located in the housing between the housing opening and the imaging surface of the video imaging means and wherein the circuit means includes preamplifying means operatively connected to the video imaging means for receiving and amplifying the electrical video signals with a predetermined gain and driving means operatively connected to the preamplifying means and to an output circuit to drive the output circuit with an amplified electrical video signal is shown.
摘要翻译： 一种适用于具有用于产生电视频信号的视频成像装置的视频系统的微型摄像机装置，限定穿过其中的开口的壳体装置，以允许来自光学装置的光学图像被聚焦在视频的成像表面上 成像装置和电路装置，其形成为几何形状，其形成几何尺寸的通道以允许光学图像通过其中，并且其中电路装置位于外壳开口和视频成像装置的成像表面之间的壳体中， 其中所述电路装置包括可操作地连接到所述视频成像装置的预放大装置，用于以预定增益接收和放大电视频信号，以及可操作地连接到所述前置放大装置的驱动装置和输出电路，用放大的电视频驱动所述输出电路 信号被显示。
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公开(公告)号：US1395494A
公开(公告)日：1921-11-01
申请号：US39135120
申请日：1920-06-24
申请人： FREDERICK A MILLER
发明人： HARRINGTON FRANK R
IPC分类号： F16F1/24
CPC分类号： F16F1/24
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