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    • 5. 发明授权
    • SEPP-Based deflection control circuit
    • 基于SEPP的偏转控制电路
    • US4409613A
    • 1983-10-11
    • US354307
    • 1982-03-03
    • Takashi NakamuraYoshihiro MoriokaKazunori YamajiTakashi NakamuraYoshihiro MoriokaKazunori Yamaji
    • Takashi NakamuraYoshihiro MoriokaKazunori YamajiTakashi NakamuraYoshihiro MoriokaKazunori Yamaji
    • H04N3/16H04N3/22H04N9/09H04N9/093
    • H04N9/09
    • Deflection control apparatus for registering the electron beam, rasters of electrostatic-deflection pick-up tubes of a three-tube color television camera includes a compensating voltage generator with inputs connected to receive horizontal and vertical sawtooth deflection signals provided from a deflection signal generator, and outputs providing compensating voltages to adjust for size, skew, and rotation. A combining circuit is provided to add the deflecting signals to the respective compensating voltages to generate adjusted compensating voltages for application to respective electrostatic deflection plates of certain ones of the tubes. For each adjusted deflecting signal, the combining circuit includes a transistor circuit having an input electrode coupled to receive the associated compensating voltage and an output electrode connected through a load resistor to an output of the deflecting signal generator. A pair of SEPP-arranged transistors are provided with their bases connected to the output electrode of the transistor circuit and with their emitters coupled together, through like-value emitter resistors, to a respective deflection plate of one of the tubes. The SEPP-configured transistors permit a high impedance to be presented to the deflection signal generator to minimize the power consumption thereof, and a low resistance to be presented to the deflection plates, to keep the latter from undesirably integrating the deflection sawtooth voltages.
    • 用于对电子束进行配准的偏转控制装置,三管彩色电视摄像机的静电偏转拾取管的光栅包括:补偿电压发生器,具有连接的输入端,用于接收从偏转信号发生器提供的水平和垂直锯齿波偏转信号;以及 输出提供补偿电压以调整大小,偏斜和旋转。 提供组合电路以将偏转信号添加到相应的补偿电压以产生用于施加到某些管的各个静电偏转板的调整的补偿电压。 对于每个经调整的偏转信号,组合电路包括晶体管电路,其具有耦合以接收相关联的补偿电压的输入电极和通过负载电阻器连接到偏转信号发生器的输出的输出电极。 一对SEPP布置的晶体管被​​设置有它们的基极连接到晶体管电路的输出电极,并且它们的发射极通过同值发射极电阻耦合到一个管的相应的偏转板上。 SEPP配置的晶体管允许将高阻抗呈现给偏转信号发生器以最小化其功率消耗,以及将低电阻提供给偏转板,以防止偏转锯齿波电压的不期望的积分。