发明名称 |
APPARATUS FOR DEMODULATING AND DECODING VIDEO SIGNALS |
摘要 |
<p>An adaptive receiver includes an adaptive demodulator and an adaptive decoder for providing demodulated and decoded output data from a video signal encoded for satellite, terrestrial or cable transmission. The demodulator recovers demodulated output data by using an adaptive timing recovery network and an adaptive carrier recovery network that incorporates a selectable slicer network. In addition, an Automatic Gain Control network within the demodulator provides a gain control output as a function of a difference between signals produced both prior to and following the slicer. The demodulator may also incorporate a signal quality detector that uses carrier recovery network signals to provide an estimate of the error in the demodulated output data. The decoder produces a Viterbi decoded output from the demodulated output data by using a selectable code rate Viterbi decoder.</p> |
申请公布号 |
EP0872096(A1) |
申请公布日期 |
1998.10.21 |
申请号 |
EP19960923554 |
申请日期 |
1996.06.28 |
申请人 |
THOMSON CONSUMER ELECTRONICS, INC. |
发明人 |
STEWART, JOHN, SIDNEY |
分类号 |
H04N21/242;H03M13/23;H04L27/22;H04L27/227;H04L27/233;H04L27/38;H04N5/455;H04N5/46;H04N21/2383;H04N21/43;H04N21/438;(IPC1-7):H04L27/06;H04L27/08;H04L7/00 |
主分类号 |
H04N21/242 |
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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