发明名称 |
Stereo signal processing circuit |
摘要 |
<p>A noise level of an output signal is maintained low. An adjacent interference detecting unit compares a signal level of a wide band signal which is a desired station signal of a relatively wide band and a signal level of a narrow band signal which is a desired station signal of a relatively narrow band, and judges that adjacent interference has occurred when the signal level of the narrow band signal is less than or equal to a predetermined level even though the signal level of the wide band signal is greater than or equal to a predetermined level. A variable amplifier (36) attenuates an L-R signal and forms a monophonic signal when the signal level of the narrow band signal is lower than a predetermined level. With this process, when there is adjacent interference, a signal level of the narrow band signal at which the attenuating unit starts attenuating the L-R signal is changed to a relatively high value.</p> |
申请公布号 |
EP2360840(A2) |
申请公布日期 |
2011.08.24 |
申请号 |
EP20110155258 |
申请日期 |
2011.02.21 |
申请人 |
ON SEMICONDUCTOR TRADING LTD. |
发明人 |
KUROKAWA, KAZUNARI;INABA, SHINYA |
分类号 |
H04B1/16 |
主分类号 |
H04B1/16 |
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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