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专利名称：Device for transforming a digital signal into
an acoustic one, and that makes use of astandard phase modulation
发明人：Paolo Sacco Boschetti申请号：US10543381申请日：20030410
公开号：US20060147037A1公开日：20060706
专利附图：
摘要：A device for transforming a digital signal into an acoustic signal, making use of astandard phase modulation, that comprises a modem chip () with a phase modulation of
known kind, used until now for the data transmission via cable, conceived and used onlyfor a cable connection, for acquiring a digital signal through a serial inlet RS232 and formodulating the same according to a standard record V.22, and an acoustic transducer ()of the piezoelectric kind guided by the modem chip ().
申请人：Paolo Sacco Boschetti
地址：Roma IT
国籍：IT
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