发明授权
- 专利标题: Providing a regional channel in a digital broadcast environment
- 专利标题(中): 在数字广播环境中提供区域频道
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申请号: US13739333申请日: 2013-01-11
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公开(公告)号: US09191723B2公开(公告)日: 2015-11-17
- 发明人: Jean-Luc Collet , Francois-Xavier Drouet , Fabien Lanne
- 申请人: International Business Machines Corporation
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Schmeiser, Olsen & Watts, LLP
- 代理商 John Pivnichny
- 优先权: EP06118686 20060809
- 主分类号: H04N7/16
- IPC分类号: H04N7/16 ; H04N7/173 ; H04N5/445 ; G06F3/00 ; G06F13/00 ; H04N21/60 ; H04N21/222 ; H04N21/2385 ; H04N21/6405 ; H04N21/643
摘要:
A method and system of broadcasting a regional television channel to a user. A digital subscriber line access multiplex (DSLAM) receives a broadcast of multicast channels intended for delivery to the user. The multicast channels include national channels and a regional channel. The DSLAM broadcasts the multicast channels to the user and receives a regional channel control signal specifying a broadcast during a specified period of time of the regional channel instead of a national channel previously scheduled to be broadcast to the user during the specified period of time. The DSLAM switches the multicast channels broadcasted to the user during the specified period of time from the national channel to the regional channel such that the regional channel is in a specific channel slot of the national channel during the specified period of time during broadcasting the multicast channels to the user.
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