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41. 发明授权

US4298884A Chroma amplifier and color killer 失效
标题翻译：色度放大器和彩色杀手
公开(公告)号：US4298884A
公开(公告)日：1981-11-03
申请号：US135947
申请日：1980-03-31
申请人： Daniel L. Reneau
发明人： Daniel L. Reneau
IPC分类号： H04N9/71 , H04N9/49
CPC分类号： H04N9/71
摘要： A chroma amplifier and color killer are described for use in a color television receiver. In a preferred embodiment, the chroma amplifier comprises a first pair of emitter-coupled transistors receiving a current source which has a D.C. operating component and an A.C. chroma signal component. A second pair of emitter-coupled transistors receives another current source which has only a D.C. operating component substantially equal to that received by the first pair of transistors. A variable ACC voltage and a substantially fixed bias voltage are applied to selected base terminals of the transistors such that one of the first pairs of transistors develops a gain controlled A.C. chroma signal output and one of the second pair of transistors develops an ACC-varied D.C. output signal free of chroma component. The latter signal drives a low power color killer for quenching color reproduction when the color component of the broadcast signal is missing or is of very low amplitude.
摘要翻译：彩色放大器和彩色抑制器被描述用于彩色电视接收机。在优选实施例中，色度放大器包括接收电流源的第一对发射极耦合晶体管，其具有直流工作分量和交流电场色度信号分量。第二对发射极耦合晶体管接收另一个电流源，其仅具有基本上等于由第一对晶体管接收的直流工作分量的直流工作分量。可变ACC电压和基本上固定的偏置电压施加到晶体管的选定基极，使得第一对晶体管中的一个晶体管产生增益受控AC色度信号输出，第二对晶体管之一产生ACC变化的DC 输出信号没有色度分量。当广播信号的颜色分量丢失或幅度非常小时，后一种信号驱动低功率彩色抑制器来淬灭色彩再现。

42. 发明授权

US4293804A Raster-centering circuit 失效
标题翻译：栅格对中电路
公开(公告)号：US4293804A
公开(公告)日：1981-10-06
申请号：US123546
申请日：1980-02-22
申请人： Joseph F. Yello
发明人： Joseph F. Yello
IPC分类号： H04N3/227 , H01J29/54
CPC分类号： H04N3/227
摘要： In a raster-centering circuit for a TV set or other cathode ray tube system, various voltage divider configurations including adjustable resistances are used to establish adjustment DC levels at one or both ends of a vertical deflection coil. If these adjustable resistances are adjusted to apply a potential difference across the deflection coil, the result is a constant centering current flowing through the coil to maintain a steady-state magnetic bias field for vertical centering of the electron beam. In one configuration the sweep amplifier itself is part of the DC centering current path. All of the adjustable resistances are ganged in aiding relationship so far as their effect on the direction of beam centering is concerned.
摘要翻译：在用于电视机或其他阴极射线管系统的光栅对中电路中，使用包括可调电阻的各种分压器配置来在垂直偏转线圈的一端或两端建立调节DC电平。如果调节这些可调电阻以在偏转线圈上施加电位差，则结果是恒定的定心电流流过线圈以维持用于电子束垂直居中的稳态磁偏置场。在一种配置中，扫频放大器本身是DC定心电流路径的一部分。所有可调节的电阻都是协助关系的，因为它们对光束对中方向的影响。

43. 发明授权

US4287535A High voltage shutdown circuit with current feedback for cathode ray tube 失效
标题翻译：高压关断电路与阴极射线管电流反馈
公开(公告)号：US4287535A
公开(公告)日：1981-09-01
申请号：US87901
申请日：1979-10-24
申请人： Bharat N. Vakil
发明人： Bharat N. Vakil
IPC分类号： H04N3/20 , H04N5/68
CPC分类号： H04N3/20
摘要： An X-radiation protection circuit in a television receiver which permits safe operation at higher voltages and beam currents with corresponding increased video presentation brightness without the production of hazardous X-radiation by means of a control loop in which current in the high voltage sweep transformer generates a feedback signal to a conventional shutdown circuit. Excessive transformer current evidencing high electron beam current automatically lowers the turn-on voltage of the shutdown circuit providing for CRT operation at maximum safe high voltage levels and electron beam currents in accordance with "Isodose" safety curves for CRT operation.
摘要翻译：电视接收机中的X辐射保护电路，其允许在较高电压和波束电流下安全操作，并且具有相应增加的视频呈现亮度，而不会通过控制回路产生危险的X射线，其中高电压扫描变压器中的电流产生向常规关断电路提供反馈信号。证明高电子束电流的过大的变压器电流自动降低关断电路的导通电压，以根据CRT操作的“等剂量”安全曲线在最大安全高电压电平和电子束电流下进行CRT操作。

44. 发明授权

US4275338A Anti-spot burn protection for CRT 失效
标题翻译： CRT防点燃保护
公开(公告)号：US4275338A
公开(公告)日：1981-06-23
申请号：US76885
申请日：1979-09-19
申请人： Wayne Grocki , Richard J. Steinmetz
发明人： Wayne Grocki , Richard J. Steinmetz
IPC分类号： H04N3/20 , H01J29/52
CPC分类号： H04N3/20
摘要： A video amplifier circuit for a cathode ray tube in a video display includes an anti-spot burn protection system for preventing damage to the fluorescent screen when deflection voltages are removed as in tube turn-off. A diode network in the video amplifier circuit controls the rate of voltage decay on the CRT's cathode and brightness control grid following the removal of power, maintaining a pre-determined brightness control grid-cathode voltage differential thereby precluding tube turn-on.
摘要翻译：用于视频显示器中的阴极射线管的视频放大器电路包括防点燃烧保护系统，用于在管截止时去除偏转电压时防止对荧光屏的损坏。视频放大器电路中的二极管网络控制CRT阴极和亮度控制网格上的电压衰减速率，维持预定的亮度控制栅极 - 阴极电压差，从而阻止管接通。

45. 发明授权

US4270218A Continuous tune all-channel selector 失效
标题翻译：连续调谐全频道选择器
公开(公告)号：US4270218A
公开(公告)日：1981-05-26
申请号：US119348
申请日：1980-02-07
申请人： Richard A. Smirl
发明人： Richard A. Smirl
IPC分类号： H03J1/06 , H03J5/24 , H04B1/16
CPC分类号： H03J5/244 , H03J1/066
摘要： Disclosed is a UHF-VHF combination channel selector for use with varactor diode tuners in which varactor control voltage is provided by a plurality of tapered potentiometers covering the various tuning segments. Non-detent, continuous channel selection is provided by rotation of a single control shaft to which is coupled a potentiometer wiper assembly. A substantially linear tuner control angular displacement versus channel number displacement over both frequency bands is achieved by compensating for varactor tuner nonlinearity over the VHF-band with complementary VHF selector potentiometers while hyper abrupt junction varactor diode manufacturing tolerances are compensated for by normalization of the UHF selector by means of upper and lower band tapered potentiometers. Selector circuitry including the various potentiometers and associated resistors forming voltage divider networks is in substrate form on one side of the selector board while band select switching is provided on the other side of the selector board.
摘要翻译：公开了一种与变容二极管调谐器一起使用的UHF-VHF组合通道选择器，其中变容二极管控制电压由覆盖各种调谐段的多个锥形电位器提供。通过连接电位计擦拭器组件的单个控制轴的旋转来提供非制动，连续通道选择。通过补偿具有互补VHF选择器电位器的VHF频带上的变容二极管调谐器非线性，通过UHF选择器的归一化来补偿超突变结变容二极管制造公差来实现在两个频带上的基本上线性的调谐器控制角位移对通道数位移通过上下带锥形电位器。包括各种电位器和形成分压器网络的相关电阻器的选择器电路在选择器板的一侧处于基板形式，而在选择器板的另一侧设置带选择切换。

46. 发明授权

US4263615A Horizontal drive circuit for video display 失效
标题翻译：水平驱动电路用于视频显示
公开(公告)号：US4263615A
公开(公告)日：1981-04-21
申请号：US77517
申请日：1979-09-20
申请人： Richard J. Steinmetz , Gregory J. Beaumont
发明人： Richard J. Steinmetz , Gregory J. Beaumont
IPC分类号： H04N5/12 , H04N5/04
CPC分类号： H04N5/12
摘要： Disclosed is a horizontal drive system and method for operating a video display capable of precisely controlling over a wide timing range the interval between the arrival of the leading edge of the input drive pulse and the initiation of the flyback pulse thus permitting the horizontal output to the video display to be synchronized to a great variety of horizontal drive input signals. The leading edge of the horizontal drive pulse triggers a variable time delay monostable multivibrator, the locked output signal of which is coupled to a precision astable multivibrator. Potentiometer adjustment of the monostable multivibrator provides for adjusting video information position with respect to raster scan while the astable multivibrator acts as the oscillator in synchronizing horizontal sweep circuitry to the horizontal input drive signal.
摘要翻译：公开了一种用于操作视频显示器的水平驱动系统和方法，该视频显示器能够在宽的定时范围内精确地控制输入驱动脉冲的前沿到达之间的间隔和启动回扫脉冲，从而允许水平输出到视频显示与多种水平驱动输入信号同步。水平驱动脉冲的前沿触发可变时间延迟单稳态多谐振荡器，其锁定输出信号耦合到精密的非稳态多谐振荡器。单稳态多谐振荡器的电位器调节提供了调整相对于光栅扫描的视频信息位置，而不稳定的多谐振荡器用作将水平扫描电路与水平输入驱动信号同步的振荡器。

47. 发明授权

US4237478A I.C. chroma injection and demodulation system 失效
标题翻译：我知道了。色度注入和解调系统
公开(公告)号：US4237478A
公开(公告)日：1980-12-02
申请号：US32318
申请日：1979-04-23
申请人： Christopher M. Engel , Gopal K. Srivastava , George J. Tzakis
发明人： Christopher M. Engel , Gopal K. Srivastava , George J. Tzakis
IPC分类号： H04N9/66 , H04N9/50 , H04N9/52
CPC分类号： H04N9/66
摘要： An integrated injection and demodulation system is described for developing three color-difference signals in a color television receiver. To employ three separate demodulators, one for each color-difference signal, on a single integrated circuit chip without increasing the number of externally generated oscillator injection signals required, the system utilizes two such injection signals whose phases and amplitudes are such that their vector differences are employed to demodulate along one axis, and one of the injection signals is used to demodulate along a second axis. In addition, a fraction of one of the injected signals is developed inside the chip and vectorily subtracted from the other injection signal for demodulation by the resultant signal along the third color-difference axis.
摘要翻译：描述了用于在彩色电视接收机中开发三个色差信号的集成注入和解调系统。为了在单个集成电路芯片上采用三个单独的解调器，每个色差信号一个，而不增加所需的外部产生的振荡器注入信号的数量，系统利用两个这样的注入信号，其相位和幅度使得它们的矢量差为用于沿着一个轴进行解调，并且使用一个注入信号沿第二轴进行解调。此外，一部分注入的信号在芯片内展开，并从其它注入信号中被矢量地减去，以便通过所得到的信号沿着第三色差轴进行解调。

48. 发明授权

US4234828A Self-oscillating sawtooth current deflection generator 失效
标题翻译：自振锯齿电流偏转发生器
公开(公告)号：US4234828A
公开(公告)日：1980-11-18
申请号：US77434
申请日：1979-09-20
申请人： Lloyd E. Matthews
发明人： Lloyd E. Matthews
IPC分类号： H03K4/501 , H03K4/84 , H01J29/70 , H01J29/76
CPC分类号： H03K4/501 , H03K4/84
摘要： Disclosed is an SCR-analogue, dual coupled transistor vertical oscillator for synching the vertical sweep in a video display with vertical synchronization input signals. Capable of stable, free-running oscillation at two, variable DC levels, the coupled transistor configuration in combination with a capacitor generates a precisely defined sawtooth voltage waveform for controlling vertical sweep and flyback. This combination provides an inexpensive, flexible means for synchronizing sweep drive circuitry operating at various DC coupled levels with a wide range of synchronization input signals.
摘要翻译：公开了一种SCR模拟双耦合晶体管垂直振荡器，用于在具有垂直同步输入信号的视频显示器中同步垂直扫描。能够在两个可变直流电平下稳定，自由运行的振荡，与电容器组合的耦合晶体管配置产生精确定义的锯齿波电压波形，用于控制垂直扫描和反激。这种组合提供了一种便宜的，灵活的装置，用于使在各种DC耦合电平下工作的扫描驱动电路与宽范围的同步输入信号同步。

49. 发明授权

US4227114A Cathodoluminescent gas discharge image display panel 失效
标题翻译：阴极发光气体放电图像显示面板
公开(公告)号：US4227114A
公开(公告)日：1980-10-07
申请号：US769127
申请日：1977-02-16
申请人： Michael C. De Jule
发明人： Michael C. De Jule
IPC分类号： G09G3/20 , G09G3/282 , H01J17/49 , H01J63/04 , H01J61/06
CPC分类号： H01J17/498 , G09G3/282 , G09G3/2011 , G09G3/2014 , G09G3/2081
摘要： This disclosure depicts a high-voltage cathodoluminescent gas discharge image display panel having an ordered array of display elements. The panel includes envelope means containing an ionizable gas at a predetermined very low pressure. The envelope means includes a transparent faceplate on the inner surface of which are disposed cathodoluminescent target elements. Electron source means produces at a given time at least one high-density electron beam, and includes means to cause a plasma sac to generate and gather electrons, and accelerate them to form a concentrated electron beam. An ultor electrode receiving a predetermined relatively high ultor voltage establishes a high voltage gradient in a plasma-free acceleration section which is effective to straight-line accelerate said electron beam in a substantially collision-free path directly into high-energy bombardment of the cathodoluminescent target elements. The panel includes light-stopping means whereby the useful visible light is solely that produced by high-energy electron bombardment of the target elements. Other structures including means for electron beam modulation are disclosed.
摘要翻译：本公开描述了具有有序排列的显示元件的高压阴极发光气体放电图像显示面板。面板包括在预定的非常低的压力下含有可电离气体的包络装置。信封装置包括在其内表面上设置阴极发光目标元件的透明面板。电子源装置在给定时间产生至少一个高密度电子束，并且包括使等离子体囊产生和收集电子并加速它们以形成浓缩电子束的装置。接收预定的相对较高的阳极电压的阳极电极在无等离子体的加速部分中建立高电压梯度，其有效地将基本上无碰撞的路径中的所述电子束直线加速直接进入阴极发光靶的高能量轰击元素。面板包括挡光装置，由此可用的可见光仅仅是通过目标元件的高能电子轰击产生的。公开了包括电子束调制装置的其它结构。

50. 发明授权

US4207588A Color killer 失效
标题翻译：彩色杀手
公开(公告)号：US4207588A
公开(公告)日：1980-06-10
申请号：US2522
申请日：1979-01-11
申请人： Gopal Srivastava
发明人： Gopal Srivastava
IPC分类号： H04N9/70 , H04N9/49
CPC分类号： H04N9/70
摘要： A hysteresis type color killer is described for use in a color television receiver. Lower power dissipation in the color killer is achieved by adapting an existing transistor stage in the chroma channel as a source of d.c. feedback for the color killer. Hence, the transistor stage does double duty and power dissipation is lowered.
摘要翻译：描述了用于彩色电视接收机的滞后型彩色抑制器。通过调整色度通道中的现有晶体管级作为直流电源，实现了色彩消除器中较低的功耗。彩色杀手的反馈。因此，晶体管级实现双重占空比，功耗降低。

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