发明名称 Cellular phone
摘要 A cellular phone is provided with a melody sound reproducing unit comprising: a speaker for providing specified output in a range between a first frequency and a second frequency; a signal generator for supplying an audio signal to the speaker; a memory for storing signal data corresponding to an audio signal to be generated by the signal generator; and a controller for controlling the signal generator based on the signal data, wherein the signal data is stored in the memory when the frequency of the corresponding audio signal is in a range between the first frequency and the second frequency, and the audio signal whose frequency is in a range between the first frequency and the second frequency is supplied to the speaker.
申请公布号 US7197149(B1) 申请公布日期 2007.03.27
申请号 US20000669032 申请日期 2000.09.25
申请人 HITACHI, LTD. 发明人 MITA RYOTA;SHINAGAWA AKIO
分类号 H03G5/00;H04B1/40;H04M1/725;H04M19/04 主分类号 H03G5/00
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