发明名称 |
BEAM SCAN VELOCITY MODULATION APPARATUS WITH DISABLING CIRCUIT |
摘要 |
In a television receiver, employing both a beam scan velocity modulation (SVM) system and an on screen display (OSD) generator, the OSD generator selectively operates to produce characters or graphics which are superimposed on the main video picture display. During operation of the OSD generator, the SVM circuit may tend to undesirably introduce artifacts into the picture display. Circuitry is provided for selectively disabling normal SVM circuit operation during OSD operation to prevent or reduce the perception of such artifacts.
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申请公布号 |
CA2047898(C) |
申请公布日期 |
1995.12.26 |
申请号 |
CA19912047898 |
申请日期 |
1991.07.25 |
申请人 |
THOMSON CONSUMER ELECTRONICS, INC. |
发明人 |
ANDERSON, MARK ROBERT |
分类号 |
H04N1/17;G09G1/00;G09G1/04;H04N3/16;H04N3/32;H04N5/257;H04N5/40;H04N5/445;(IPC1-7):H04N5/44 |
主分类号 |
H04N1/17 |
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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