发明授权
- 专利标题: Access system and method for providing interactive access to an information source through a television distribution system
- 专利标题(中): 用于通过电视分配系统提供对信息源的交互访问的接入系统和方法
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申请号: US630397申请日: 1996-04-10
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公开(公告)号: US5999970A公开(公告)日: 1999-12-07
- 发明人: Harold M. Krisbergh , David E. Wachob , Joseph E. Augenbraun , Jae Hea Edward Lee
- 申请人: Harold M. Krisbergh , David E. Wachob , Joseph E. Augenbraun , Jae Hea Edward Lee
- 申请人地址: PA Trevose
- 专利权人: World Gate Communications, LLC
- 当前专利权人: World Gate Communications, LLC
- 当前专利权人地址: PA Trevose
- 主分类号: H04L29/06
- IPC分类号: H04L29/06 ; H04L29/08 ; H04N7/088 ; H04N7/10 ; H04N7/173
摘要:
An access system and method for providing interactive access to an information source through a television distribution system is disclosed. The distribution system includes a television distribution network, headend distribution equipment at the headend of the distribution network, and a plurality of terminals at terminal ends of the distribution network. An input device and an upstream transmitter are associated with one of the terminals to input a command for the information source and to transmit the inputted command on an upstream channel of the distribution network, respectively. A headend server, upstream receiver, and blank interval inserter are associated with the headend distribution equipment. The headend server is interfaced to the information source. The upstream receiver is interfaced to the headend server to receive and forward the command to the headend server. The headend server transmits the forwarded command to the information source, and the information source transmits responsive information to the headend server. The blank interval inserter receives the information from the headend server and inserts sequential portions into blank intervals of sequential picture fields of a television transmission on a downstream channel of the distribution network. The blank interval extractor is interfaced to the terminal to extract the inserted sequential portions. The extracted information is then displayed on a display device associated with the terminal.