发明名称 |
Spread communication system and mobile station thereof |
摘要 |
The signal received by an antenna is input to a receiving circuit. The receiving circuit allows the existence of a perch channel in a particular frequency to be examined by frequency-converting the signal having the frequency corresponding to the frequency specification data within the signal received by the antenna based on the frequency specification data from a controlling circuit. A rectifying circuit rectifies the received signal, and outputs the integrated value of the signal value after being rectified. The integrated value is converted into a digital signal by an A/D converter, and compared with a threshold value by a comparing circuit. If the digital signal value is determined to be larger than the threshold value, a Write signal is output to a storing circuit, so that the frequency specification data output from the controlling circuit is stored in the storing circuit. |
申请公布号 |
EP2296289(B1) |
申请公布日期 |
2011.09.28 |
申请号 |
EP20100180903 |
申请日期 |
1999.12.14 |
申请人 |
FUJITSU LIMITED |
发明人 |
IWAMOTO, HIROAKI;AOKI, NOBUHISA;NAKAMURA, TAKAHARU |
分类号 |
H04B1/707;H04B1/7075;H04B1/7083;H04B7/005;H04B7/26;H04L7/00;H04W48/16;H04W52/04;H04W52/24;H04W56/00;H04W64/00;H04W88/08 |
主分类号 |
H04B1/707 |
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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