发明名称 Soft chip modem
摘要 A system and method that provides a user multiple, simultaneous uses of a single analog line. The system comprises a modem, wherein the modem compresses a signal traveling through the analog line. The modem provides simultaneous transmission of two or more speech or data calls.
申请公布号 US7970044(B2) 申请公布日期 2011.06.28
申请号 US20030647924 申请日期 2003.08.25
申请人 HARDMAN CLAYTON M 发明人 HARDMAN CLAYTON M.
分类号 H04B1/38;H04L12/56 主分类号 H04B1/38
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