发明名称 |
DIGITAL BROADCASTING RECEIVER |
摘要 |
A digital radio receiver for reproducing carrier quickly and capturing a desired signal at high speed, comprising a carrier reproduction phase error detecting circuit (6) for detecting the phase error voltage based on the demodulation output of a wave to be modulated between predetermined sections in a header section, a number-of-peak calculation circuit (92) for calculating the error frequency between a desired receiving frequency and the frequency of a reproduced carrier, and a differential coefficient calculation circuit (94) for calculating the polarity of the error frequency. The error frequency having a calculated polarity is converted through a step frequency control circuit (96) into a step frequency width for an automatic frequency controlling and a desired signal can be captured at high speed by frequencyscanning the reproduction carrier frequency until frame synchronization is established at a converted step frequency width after the frame synchronization is detected thereby reproducing the carrier quickly.
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申请公布号 |
CA2312304(A1) |
申请公布日期 |
1999.06.10 |
申请号 |
CA19982312304 |
申请日期 |
1998.12.04 |
申请人 |
KABUSHIKI KAISHA KENWOOD |
发明人 |
HASHIMOTO, AKINORI;SHIRAISHI, KENICHI;HORII, AKIHIRO;MATSUDA, SHOJI;KATOH, HISAKAZU |
分类号 |
H03L7/06;H04L7/00;H04L27/00;H04L27/22;H04L27/227;(IPC1-7):H04L27/22 |
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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