Invention Grant
US08196165B2 Method and apparatus for delivering emergency alert system (EAS) messages over a switched digital video (SDV) system
有权
用于通过交换数字视频(SDV)系统递送紧急警报系统(EAS)消息的方法和装置
- Patent Title: Method and apparatus for delivering emergency alert system (EAS) messages over a switched digital video (SDV) system
- Patent Title (中): 用于通过交换数字视频(SDV)系统递送紧急警报系统(EAS)消息的方法和装置
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Application No.: US12110422Application Date: 2008-04-28
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Publication No.: US08196165B2Publication Date: 2012-06-05
- Inventor: John Schlack
- Applicant: John Schlack
- Applicant Address: US PA Horsham
- Assignee: General Instrument Corporation
- Current Assignee: General Instrument Corporation
- Current Assignee Address: US PA Horsham
- Main IPC: H04N7/16
- IPC: H04N7/16 ; H04N7/10 ; H04N7/025 ; H04N7/18 ; H04N7/173

Abstract:
A switched digital video (SDV) system includes an SDV manager for coordinating SDV sessions requested by subscriber terminals associated with at least one service group. The SDV system also includes an input for receiving content to be delivered during the SDV sessions and at least one edge device for receiving transport streams that include an SDV program provided by the input and for transmitting each transport stream over an access network to at least one of the subscriber terminals on one of a plurality of SDV channels. In response to receipt of a message from a subscriber terminal in a first service group indicating that an EAS event is occurring, the SDV manager is configured to suspend reclamation of network resources allocated to the first service group which otherwise occurs when subscriber terminals tune off an SDV channel.
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