发明名称 |
Video signal noise reduction circuit for a video demodulator comprising a PLL |
摘要 |
Video noise reduction is achieved by limiting the loop response bandwidth in a phase locked loop demodulator with a high-pass RC network connected between two oppositely phased video signals in the phase detector for out-phasing a high frequency component of the loop response bandwidth. Easy user adjustment allows viewable video images to be obtained from very noisy signals in deep fringe reception areas.
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申请公布号 |
US5416530(A) |
申请公布日期 |
1995.05.16 |
申请号 |
US19920992180 |
申请日期 |
1992.12.17 |
申请人 |
LULY, ROBERT A. |
发明人 |
LULY, ROBERT A. |
分类号 |
H04N5/213;H04N5/455;(IPC1-7):H04N5/213 |
主分类号 |
H04N5/213 |
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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