发明名称 |
PROVIDING AUDIO SIGNALS USING A NETWORK BACK-CHANNEL |
摘要 |
A method for providing audio portions of broadcast television signals is disclosed. A television signal is buffered by a multimedia client. In response to a user request, audio data may be obtained from a service provider and sent back to the multimedia client using a network back-channel. The obtained audio data may be synchronized with a video portion of the television signal and output to an audio device, while the television signal is output to a display device. |
申请公布号 |
US2010289954(A1) |
申请公布日期 |
2010.11.18 |
申请号 |
US20090464652 |
申请日期 |
2009.05.12 |
申请人 |
AT&T INTELLECTUAL PROPERTY I, L.P. |
发明人 |
SULLIVAN MARC;CROWE KEITH;PRATT JAMES |
分类号 |
H04N9/475;H04N7/173 |
主分类号 |
H04N9/475 |
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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