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1. 发明申请

WO1998021882A1 HIGH VOLTAGE REGULATION BY SWITCHING RETRACE CAPACITORS 审中-公开
标题翻译：通过开关逆变电容器进行高电压调节
公开(公告)号：WO1998021882A1
公开(公告)日：1998-05-22
申请号：PCT/IB1997001427
申请日：1997-11-12
申请人： RCA THOMSON LICENSING CORPORATION , TRIPOD, Luc
发明人： RCA THOMSON LICENSING CORPORATION
IPC分类号： H04N03/185
CPC分类号： H04N3/233 , H04N3/185
摘要： A circuit for regulating an anode voltage (EHT) in an information display apparatus. A horizontal deflection circuit (10) has trace and retrace modes of operation. The horizontal deflection circuit further has a fixed retrace capacitance (CR1); and a series combination of a switched retrace capacitance (CR2) and a switch element (TR1), which combination is coupled in parallel with the fixed retrace capacitance. The switch element is in a closed position as the horizontal deflection circuit enters the retrace mode of operation. A voltage divider network (R1, R2) samples the anode voltage. A control circuit (20) is responsive to the sample voltage (V1) for controlling the switch element, such that the control circuit effects regulation of the anode voltage by selecting a time during the retrace period at which to place the switch element in an open position. The control circuit may also provide a raster width compensation voltage for an east-west pincushion correction circuit.
摘要翻译：一种用于调节信息显示装置中的阳极电压（EHT）的电路。水平偏转电路（10）具有跟踪和回扫操作模式。水平偏转电路还具有固定回扫电容（CR1）; 以及开关回扫电容（CR2）和开关元件（TR1）的串联组合，该组合与固定回扫电容并联耦合。当水平偏转电路进入回扫模式时，开关元件处于闭合位置。分压网络（R1，R2）对阳极电压进行采样。控制电路（20）响应于用于控制开关元件的采样电压（V1），使得控制电路通过在将开关元件置于开路的回扫周期期间选择时间来实现阳极电压的调节位置。控制电路还可以为东西枕形校正电路提供光栅宽度补偿电压。

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