发明名称 |
Data communications system for establishing links between subscriber stations and broadcast stations |
摘要 |
An interactive data communications system comprises a plurality of subscriber stations each of which has an identification code associated therewith and an entry terminal for manually entering data in response to a broadcast signal. Each entry terminal is connectable to a transmission line, the system including switching means for selectively allowing either data or voice signals to be conveyed down the transmission line. The transmission lines are linked to a data switching mechanism which includes a plurality of voice/data multiplexers. A control station is arranged to communicate with the data switching mechanism via a data link, the control station comprising at least one host computer for processing the data entered from the various entry terminals. The invention extends to a method of establishing a data link between a subscriber station and a host station which utilizes an interactive data communications systems.
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申请公布号 |
US5444769(A) |
申请公布日期 |
1995.08.22 |
申请号 |
US19940292321 |
申请日期 |
1994.08.16 |
申请人 |
ZIETSMAN, DAVID WALLACE |
发明人 |
KOEN, JACOBUS P. L.;CLARK, RICHARD |
分类号 |
H04H20/28;H04H20/38;H04H60/94;H04M3/42;H04M3/493;(IPC1-7):H04M11/00 |
主分类号 |
H04H20/28 |
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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