| 发明名称 |
DUBBELRIKTAT TELESKRIFTSYSTEM SOM ARBETAR VEXELVIS VIA EN ENDA BERVAG |
| 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. |
| 申请公布号 |
SE7809843(A) |
申请公布日期 |
1979.03.27 |
| 申请号 |
SE19780009843 |
申请日期 |
1978.09.19 |
| 申请人 |
* ETABLISSEMENT PUBLIC DE DIFFUSION DIT "TELEDIFFUSION DE;FRANCE";JEAN-PAUL GHISLAIN * DAGNELIE |
发明人 |
J-P G * DAGNELIE |
| 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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