发明名称 |
Radio communication device |
摘要 |
A radio communication device that outputs an alarm when a reception level of a radio wave from a wireless unit is less than a threshold value, includes a reception level measuring section for measuring the reception level of the radio wave transmitted from the wireless unit at certain times. A threshold value setting section for setting a first threshold value or a second threshold value less than the first threshold value based on a difference between the reception level of the radio wave measured a previous time and the reception level of the radio wave measured a subsequent time. An alarm output requesting section for causing an alarm output section to output an alarm if the reception level of the radio wave measured a subsequent time is less than the first threshold value or the second threshold value. |
申请公布号 |
US8165623(B2) |
申请公布日期 |
2012.04.24 |
申请号 |
US20090405540 |
申请日期 |
2009.03.17 |
申请人 |
KANAZAWA MASARU;TONOOKA TABITO;MORI MASATOMO;FUJITSU LIMITED |
发明人 |
KANAZAWA MASARU;TONOOKA TABITO;MORI MASATOMO |
分类号 |
H04M1/00;G08B1/08 |
主分类号 |
H04M1/00 |
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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