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公开(公告)号：US4518986A
公开(公告)日：1985-05-21
申请号：US454446
申请日：1982-12-29
申请人： Werner Hinn , Hans-Rudolf Fecht
发明人： Werner Hinn , Hans-Rudolf Fecht
摘要： Apparatus for adjusting the black image current bias of a kinescope in a video signal display system includes means for developing a control signal representative of the black current bias condition of the kinescope. The control signal is developed in response to a sample of an integrated group of sensed bias representative signals developed over several horizontal line intervals which are significant in number relative to the number of horizontal line intervals associated with a vertical field interval. In the case of a color kinescope having plural electron guns, plural groups of signals respectively representative of the black current bias of each electron gun are developed. The plural signal groups exhibit a mutually time sequential relationship and are processed by a common signal processor to develop an integrated version of each of the bias representative signal groups.
摘要翻译： 用于调整视频信号显示系统中显像管的黑色图像电流偏压的装置包括用于开发代表显像管的黑色电流偏置状态的控制信号的装置。 控制信号响应于在几个水平线间隔上产生的感测到的偏置代表信号的集合的样本而被开发，其数量相对于与垂直场间隔相关联的水平线间隔的数量是有意义的。 在具有多个电子枪的彩色显象管的情况下，分别表示各电子枪的黑电流偏置的多组信号。 多个信号组表现出相互时间顺序的关系，并且由公共信号处理器处理以形成每个偏置代表信号组的集成版本。
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2.发明授权
公开(公告)号：US4502073A
公开(公告)日：1985-02-26
申请号：US454460
申请日：1982-12-29
申请人： Werner Hinn , Hans-Rudolf Fecht
发明人： Werner Hinn , Hans-Rudolf Fecht
CPC分类号： H04N9/72
摘要： An interface circuit in a kinescope bias control system includes a transistor with a base electrode coupled to the output of a kinescope drive amplifier in a television receiver, an emitter electrode coupled to a kinescope cathode, and a collector output coupled to an output circuit which provides signals to signal processing circuits. A current related to the kinescope black current level is applied to the emitter electrode. The signal gain from the base electrode to the output circuit is significantly less than the signal gain from the emitter electrode to the output circuit. Spurious signals including noise from the output of the kinescope driver are thereby significantly attenuated at the output circuit, preventing distortion of black current representative signals provided from the output circuit.
摘要翻译： 显像管偏置控制系统中的接口电路包括晶体管，其具有耦合到电视接收机中的显像管驱动放大器的输出的基极，耦合到显象管阴极的发射极和耦合到输出电路的集电极输出，该输出电路提供 信号到信号处理电路。 与显像管黑电流水平相关的电流被施加到发射极。 从基极到输出电路的信号增益明显小于从发射极到输出电路的信号增益。 包括来自显像管驱动器输出的噪声的伪信号因此在输出电路处被显着衰减，从而防止从输出电路提供的黑电流代表信号的失真。
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公开(公告)号：US4169988A
公开(公告)日：1979-10-02
申请号：US898434
申请日：1978-04-20
申请人： Hans-Rudolf Fecht
发明人： Hans-Rudolf Fecht
CPC分类号： H04N3/233
摘要： A side pincushion correction circuit is coupled to a horizontal resonant retrace circuit which includes a retrace capacitor and a horizontal deflection winding. The correction circuit includes an inductance and a controllable switch which is turned on during each horizontal retrace interval. A compensating circuit comprising secondary winding of a flyback transformer is coupled to the inductance and reflects the inductance onto the primary winding side in series with the deflection winding when the switch is open circuited and reflects the inductance in parallel with the deflection winding when the switch is conducting. The on-off ratio of the switch during horizontal retrace is modulated at a vertical parabolic rate to achieve side pincushion correction. The turns ratio of the flyback transformer is selected to adjust the resonant frequency and the retrace time modulation created by the correction circuit.
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