发明名称 |
Bidirectional telewriting system operating in an alternating mode over a single carrier |
摘要 |
A bidirectional telewriting system for two-way transmission of telewriting data over a transmission channel which is shared by a speech link. A frequency window is used within the speech frequency band, within which a single carrier is used. A commutator at each terminal causes a reversal in the direction of transmission of the telewriting data over the single carrier.
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申请公布号 |
US4214123(A) |
申请公布日期 |
1980.07.22 |
申请号 |
US19780939188 |
申请日期 |
1978.09.05 |
申请人 |
ETABLISSEMENT PUBLIC DE DIFFUSION DIT TELEDIFFUSION DE |
发明人 |
DAGNELIE, JEAN-PAUL G |
分类号 |
H04M11/06;G08C21/00;H04L5/16;H04L29/08;H04M11/00;(IPC1-7):H04L5/16 |
主分类号 |
H04M11/06 |
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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