发明名称 |
Method and circuit arrangement for reducing noise in digitised television signals |
摘要 |
A noise reduction of digitised television signals should become effective even with movements in the image content and not perceptibly impair the image sharpness. An estimated-value signal for the noise component is calculated (6) from the difference (3) of a frame-to-frame comparison (1, 5) and the difference (4) between the noisy input signal (1) and the calculated estimated-value signal (6) is formed which supplies the reduced-noise output signal (2) which is stored for subsequent calculations (5). <IMAGE>
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申请公布号 |
DE3617827(A1) |
申请公布日期 |
1987.12.03 |
申请号 |
DE19863617827 |
申请日期 |
1986.05.26 |
申请人 |
HEINRICH-HERTZ-INSTITUT FUER NACHRICHTENTECHNIK BERLIN GMBH |
发明人 |
SCHAMEL,GUENTER,DIPL.-ING.;KUMMEROW,THOMAS,DR.-ING. |
分类号 |
H04N5/213;(IPC1-7):H04N5/213;H04N7/13;H04N9/64;H04N11/04 |
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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