发明名称 |
SYNCHRONIZATION SIGNAL DETECTION APPARATUS AND METHOD IN THE DIGITAL TELEVISION RECEIVER |
摘要 |
A synchronization signal detection circuit and method of a digital TV (DTV) receiver are provided. The synchronization signal detection circuit determines a precise main path by determining powers in consideration of the influence of multiple paths near signals located at a peak value location and guarantees a stable operation of an equalizer by using error values output from a decoder to generate a synchronization locking control signal. A power signal based on the correlation of the received signal with a PN511 sequence is filtered to compensate for a dynamic multipath distortion (e.g., due to other multipath signals near signals located at a peak value location). The magnitude of the filtered power signal is then compared (e.g., with a predetermined threshold value) to determine the position of the main path (e.g., at the peak value location, or at a pre or post multipath signal location). |
申请公布号 |
KR20060032408(A) |
申请公布日期 |
2006.04.17 |
申请号 |
KR20040081350 |
申请日期 |
2004.10.12 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHEON, JONG HWAN;JEON, HYUN BAE |
分类号 |
H04N5/04 |
主分类号 |
H04N5/04 |
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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