发明名称 |
Cathode ray tube display with cancellation of electric field emissions. |
摘要 |
<p>A cathode ray tube display having reduced electric field emissions comprising a cathode ray tube 100, an element 200 for detecting modulations in the final anode voltage of the CRT, the signal not being directly dependent on the deflection driving means 115. A matching network 205 provides phase and gain correction to the signal from element 200, amplification means 210 receives the signal from network 205 and an emission means 215 radiates a cancelling electric field dependent on the modulations detected by said element 200. <IMAGE></p> |
申请公布号 |
EP0630036(A1) |
申请公布日期 |
1994.12.21 |
申请号 |
EP19940101588 |
申请日期 |
1994.02.03 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
JACKSON, FREDERICK S.;LEAVER, DAVID;KNOX, ANDREW RAMSEY;BEETESON, JOHN S. |
分类号 |
G09G1/00;H01J;H01J15/04;H01J29/00;H01J29/06;H01J29/98;H04N3/16;H04N9/29;(IPC1-7):H01J29/00 |
主分类号 |
G09G1/00 |
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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