发明名称 |
DIGITAL BROADCASTING RECEIVER |
摘要 |
A digital broadcasting receiver is provided which can reproduce a carrier quickly and capture a desired signal at high speed. A carrier reproduction phase error detection circuit (6) detects a phase error voltage in accordance with a demodulation output obtained by demodulating a demodulated wave of a modulated wave during a predetermined section in a header section. A peak number calculation circuit (92) calculates an error frequency between a desired reception frequency and a reproduction carrier frequency in accordance with the phase error voltage. A differential coefficient calculation circuit (94) calculates the polarity of the error frequency. A step frequency control circuit (96) converts the calculated error frequency having the calculated polarity into a step frequency width for automatic frequency control. The reproduction carrier frequency is scanned at the converted step frequency width until a frame sync is established after the frame sync is detected. It is therefore possible to reproduce the carrier quickly and capture the desired signal at high speed.
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申请公布号 |
CA2312304(C) |
申请公布日期 |
2006.05.30 |
申请号 |
CA19982312304 |
申请日期 |
1998.12.04 |
申请人 |
KABUSHIKI KAISHA KENWOOD |
发明人 |
HORII, AKIHIRO;MATSUDA, SHOJI;HASHIMOTO, AKINORI;SHIRAISHI, KENICHI;KATOH, HISAKAZU |
分类号 |
H03L7/06;H04L27/22;H04L7/00;H04L27/00;H04L27/227 |
主分类号 |
H03L7/06 |
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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