发明名称 |
Wiedergabegerät für ein Farbvideosignal |
摘要 |
A video signal reproducing apparatus has a filter circuit (31) interposed in a transmission path for a reproduced luminance signal, and the characteristic of the filter circuit (31) desirably includes a band-eliminating characteristic and a comb-filter passband characteristic which can be selectively emphasized. When the reproduced luminance signal has a normal or relatively smaller frequency bandwidth or a relatively small line correlation component, or when the level of the reproduced carrier chrominance signal is high, the band-eliminating characteristic of the filter circuit is emphasized. The foregoing video signal reproducing apparatus is particularly suited for reproducing a color video signal that includes a wide band luminance signal, in which case the comb-filter passband characteristic of the filter circuit is selected or emphasized so as to reduce noise near the color subcarrier frequency, to avoid displacement of a reproduced picture of high definition in the vertical direction and also to avoid interference caused by the vertical non-correlation component of a color picture. |
申请公布号 |
DE3855319(T2) |
申请公布日期 |
1996.11.28 |
申请号 |
DE19883855319T |
申请日期 |
1988.06.22 |
申请人 |
SONY CORP., TOKIO/TOKYO, JP |
发明人 |
EZAKI, TADASHI, SHINAGAWA-KU TOKYO, JP |
分类号 |
H04N9/78;H04N9/79;H04N9/85;H04N9/87 |
主分类号 |
H04N9/78 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|