发明名称 |
Digital chrominance signal demodulation apparatus. |
摘要 |
<p>Different from typical signal processing which employs a feedback control, by adopting a demodulating circuit employing AFC, which is not affected by a comb filter, the response characteristic against jitter is improved and a down converted chrominance signal can be demodulated with a good accuracy. therefore, the noise rejection effect by a comb filter is improved, the detecting accuracy of the residual phase error is also improved, and the S/N ratio of the phase is improved by combining feedforward APC compensation with a velocity error, and this results in a much improved picture quality. <IMAGE></p> |
申请公布号 |
EP0574200(A1) |
申请公布日期 |
1993.12.15 |
申请号 |
EP19930304368 |
申请日期 |
1993.06.04 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD |
发明人 |
FUJII, KUNIHIKO;USUKI, NAOSHI |
分类号 |
H04N9/84;H04N9/89;(IPC1-7):H04N9/89 |
主分类号 |
H04N9/84 |
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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