发明名称 |
ATOMIC CHANNEL CHANGES IN A SWITCHED DIGITAL VIDEO SYSTEM |
摘要 |
Atomic channel change in a switched digital video (SDV) system. A set-top box (STB) sends join and leave message commands to a SDV device when requesting a channel change. If one of the IGMP message commands does not reach the SDV device, oversubscription can occur. A combined join and leave message ensures that a join command is performed only when a leave command is also performed. If the single message does not reach the SDV device, the STB resends the command. |
申请公布号 |
CA2663907(C) |
申请公布日期 |
2014.08.12 |
申请号 |
CA20062663907 |
申请日期 |
2006.11.09 |
申请人 |
SCIENTIFIC-ATLANTA, INC. |
发明人 |
VERSTEEG, WILLIAM C.;WALL, WILLIAM E.;ROVIRA, LUIS A.;MORSE, KEN |
分类号 |
H04N21/45;H04L12/18;H04N21/436;H04N21/643 |
主分类号 |
H04N21/45 |
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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