发明名称 |
Digital receiving device and radio communication system |
摘要 |
A digital receiving device includes a detecting means for detecting a specific code under a signal receiving state capable of successively receiving a desired signal, a setting means for setting a period for detecting the specific code as a non-communication state period, an adaptive filter having an adaptive mode and a non-adaptive mode, the adaptive mode by which a filter coefficient is sequentially updated so as to remove an ambient noise during the non-communication state period, and the non-adaptive mode by which the filter coefficient is stopped from being updated during a period except for the non-communication state period under the signal receiving state and a filter controlling means for controlling an operation for switching the adaptive mode and the non-adaptive mode of the adaptive filter.
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申请公布号 |
US7327813(B2) |
申请公布日期 |
2008.02.05 |
申请号 |
US20040937773 |
申请日期 |
2004.09.10 |
申请人 |
AISIN SEIKI KABUSHIKI KAISHA;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
MURAKAMI YUICHI;YAMAMOTO TOMOHIRO;FURUHASHI AKIRA;ONO KAZUNORI;OKADA HIROKI |
分类号 |
H04B1/10;H04L27/01;B60R25/00;H04L25/03 |
主分类号 |
H04B1/10 |
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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