发明名称 Portable mobile unit
摘要 <p>A cellular phone capable of informing a user of the deterioration of a line speech quality by raising an alarm. In the cellular phone according to the present invention, the condition in which the saturation of a transmission output lasts for a predetermined period of time or longer is detected, and a deterioration in the uplink speech quality is thereby predicted, an alarm signal being sent out to the cellular phone. Thus, the user is notified that a deterioration in the uplink speech quality occurs. <IMAGE></p>
申请公布号 EP1199901(A2) 申请公布日期 2002.04.24
申请号 EP20010302745 申请日期 2001.03.26
申请人 HITACHI, LTD. 发明人 KAZUTOSHI, HIGUCHI
分类号 H04M1/00;H04B7/26;H04W24/00;H04W52/00;(IPC1-7):H04Q7/34;H04B7/005;H04M1/725;H04Q7/32 主分类号 H04M1/00
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