发明名称 |
On-screen display |
摘要 |
To prevent undesired bending of vertical bar type information displayed on the screen of a kinescope due to kinescope beam current variations, modifying circuits are provided for reducing the beam current threshold level of an automatic beam current limiter stage to a lower threshold level whenever vertical bar type information is displayed.
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申请公布号 |
US4549218(A) |
申请公布日期 |
1985.10.22 |
申请号 |
US19830536712 |
申请日期 |
1983.09.30 |
申请人 |
RCA CORPORATION |
发明人 |
NORLEY, RONALD R.;SENDELWECK, GENE K.;CHEN, KEMING J. |
分类号 |
H04N5/59;H04N5/445;(IPC1-7):H04N5/68 |
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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