发明名称 |
Dynamic beam current control |
摘要 |
A dynamic beam current control circuit for a television camera tube features a threshold circuit so that the correction is effected only for large light intensities impinging on the television camera tube. It also features a non-linear circuit which has a characteristic which is in the inverse of the control electrode voltage versus beam current characteristic of the camera tube. This prevents a ghost effect from showing in the display picture.
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申请公布号 |
US4306251(A) |
申请公布日期 |
1981.12.15 |
申请号 |
US19800152971 |
申请日期 |
1980.05.23 |
申请人 |
NORTH AMERICAN PHILIPS CORPORATION |
发明人 |
SAFAR, JOHANN |
分类号 |
H04N5/228;H04N5/235;(IPC1-7):H04N5/34 |
主分类号 |
H04N5/228 |
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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