发明名称 |
AVERAGE BEAM CURRENT LIMITER |
摘要 |
<p>RCA 71,468 IMPROVED AVERAGE BEAM CURRENT LIMITER of the Invention An average beam current limiter for a kinescope responsive to video signals coupled to the kinescope via a signal transmission channel comprises a source of control signals representative of average current drawn by the kinescope. When average beam current exceeds a predetermined threshold level by an amount within a first range of beam current, a corresponding control signal is coupled to the signal transmission channel to vary the D.C. content of the video signal in a direction to limit beam current above the threshold level within the first range. When beam current exceeds the threshold level by a relatively greater amount within a second range of current, a corresponding control signal serves to vary the peak amplitude of the video signal to limit beam current within the second range.</p> |
申请公布号 |
CA1096489(A) |
申请公布日期 |
1981.02.24 |
申请号 |
CA19780302568 |
申请日期 |
1978.05.03 |
申请人 |
RCA CORPORATION |
发明人 |
TUMA, ALOIS V.;HARWOOD, LEOPOLD A.;GROENEWEG, WILLEM H. |
分类号 |
H04N5/59;(IPC1-7):04N9/16 |
主分类号 |
H04N5/59 |
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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