发明名称 |
Switched capacitor S-correction circuit |
摘要 |
An S-correction circuit for a video display apparatus provides switchable amounts of correction in a given line deflection interval in order to satisfy the requirements of cathode ray tubes having large deflection angles or complex curvature faceplates. A second S-shaping capacitor is coupled in parallel with the main S-shaping capacitor by action of a switching transistor. The time at which the transistor is switched may be controlled, for example, by modulating the switching point at a vertical rate, in order to increase the flexibility of the correction circuit.
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申请公布号 |
US4533855(A) |
申请公布日期 |
1985.08.06 |
申请号 |
US19830562246 |
申请日期 |
1983.12.16 |
申请人 |
RCA CORPORATION |
发明人 |
WILLIS, DONALD H.;LUZ, DAVID W. |
分类号 |
H04N3/23;H04N3/233;(IPC1-7):H01J29/70;H01J29/76 |
主分类号 |
H04N3/23 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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