发明名称 |
Mixed modulation level communication system |
摘要 |
A communication system has an information signal having a plurality of data streams. The data streams are simultaneously modulated on a multi-level symbol transmission. The data streams may have either independent or dependent signalling protocols. A transmitting device generates the information in one of several embodiments. A first receiver receives the information signal and process only a first data stream for messages. A second receiver receives the information signal and process only the second data stream for meassages. A third receiver is capable of selectively receiving and processing a plurality of data streams. The third receiver is shown in several embodiments for selecting the data streams.
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申请公布号 |
US5051993(A) |
申请公布日期 |
1991.09.24 |
申请号 |
US19890330837 |
申请日期 |
1989.03.30 |
申请人 |
MOTOROLA, INC. |
发明人 |
DELUCA, MICHAEL J.;WILLARD, DAVID F.;SCHWENDEMAN, ROBERT J. |
分类号 |
H04J1/00;H04B1/16;H04B7/26;H04J3/04;H04J99/00;H04L5/04;H04Q7/06 |
主分类号 |
H04J1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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