发明名称 Calling system from accessory to portable device
摘要 A radio communication method allowing a portable device to be easily found using its accessory is disclosed. In response to an operation of a predetermined key of the accessory, the accessory transmits a ringing signal to the portable device. When receiving the ringing signal from the accessory, the portable device starts alerting and, when a predetermined key of the portable device is operated, the portable device stops alerting.
申请公布号 US7519377(B2) 申请公布日期 2009.04.14
申请号 US20010974374 申请日期 2001.10.10
申请人 NEC CORPORATION 发明人 TSUKAMOTO TADASHI
分类号 H04M1/00;H04M3/42;H04M1/60;H04M1/725;H04M3/00;H04W88/02 主分类号 H04M1/00
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