发明名称 |
ANALOGUE TRANSMISSION OF VIDEO SIGNALS |
摘要 |
A signal for transmission is compared 12 with a prediction signal to produce a prediction error signal which is amplitude limited 8 and compressed 14 before transmission in analogue form. The limiter output is added 26 to the production signal and the resultant applied to a prediction function circuit 24 to generate the prediction signal. At the receiver, the analogue signal is expanded 20 and applied to a similar adder 26 and prediction function circuit 24. The system is useful with MAC type television signals and enables a reduction of noise effects on fm transmission. <IMAGE> |
申请公布号 |
GB8720987(D0) |
申请公布日期 |
1987.10.14 |
申请号 |
GB19870020987 |
申请日期 |
1987.09.07 |
申请人 |
BRITISH BROADCASTING CORPORATION |
发明人 |
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分类号 |
G06T9/00;H04N7/045;H04N7/083;H04N7/12 |
主分类号 |
G06T9/00 |
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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