发明名称 |
Interactive television service utilizing both unidirectional and omnidirectional broadcasting |
摘要 |
The invention concerns an interactive television service in which multiple broadcasting facilities are interconnected through a single broadcast site so that each broadcast facility may interact freely with one another. A method is provided to allow a single broadcasting site to originate a broadcast and retain complete control of that broadcast in which all participating broadcasting sites can engage in two-way audio and full motion video discourse with the originating site as well as with all participating sites during the course of the broadcast. The method utilizes only two broadcast frequencies.
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申请公布号 |
US5675373(A) |
申请公布日期 |
1997.10.07 |
申请号 |
US19940292989 |
申请日期 |
1994.08.19 |
申请人 |
MARION COUNTY SCHOOL BOARD |
发明人 |
JOINER, MARION DOUGLAS;ALMGREN, GARY ALLEN |
分类号 |
H04N7/173;H04N7/20;(IPC1-7):H04N1/00 |
主分类号 |
H04N7/173 |
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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