发明名称 |
Communication system and communication device |
摘要 |
A communication system 10 is comprised of a communication device 11 and a relay device 12 that is connected to the communication device 11 by radio at close range and an other communication device 15 via a network and that relays a communication between the first device 11 and the other communication device 15. Such communication system 10 comprises local communicating units 112 and 121 and a network communicating unit 123 that detect a disconnection of a radio channel between the communication device 11 and the relay device 12 and a disconnection of a radio channel between the relay device 12 and the other communication device 15. The communication device 11 includes a notifying unit 113 that notifies a user of that a disconnection of which radio channel of a plurality of the radio channels is detected.
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申请公布号 |
US2004063471(A1) |
申请公布日期 |
2004.04.01 |
申请号 |
US20030405694 |
申请日期 |
2003.04.03 |
申请人 |
KINDO TSUYOSHI;HATAKEYAMA TAKESHI;MORIGUCHI KEN-ICHI |
发明人 |
KINDO TSUYOSHI;HATAKEYAMA TAKESHI;MORIGUCHI KEN-ICHI |
分类号 |
H04L12/26;H04M1/60;H04W88/02;(IPC1-7):H04M1/00;H04B1/38 |
主分类号 |
H04L12/26 |
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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