发明名称 |
Method and apparatus for testing lip-sync of digital television receiver |
摘要 |
A lip synchronization test method for DTV receivers. The method includes the steps of: generating a digital audio stream having a frame index inserted therein and a video stream having a Transient Effect Area Test Signal (TATS) inserted therein; comparing the waveform of the time-indexed audio signal with that of the time-indexed video signal; and measuring and calculating a time difference dt between the audio and video signals based upon the time indexes of the time-indexed audio and video signals.
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申请公布号 |
US7586544(B2) |
申请公布日期 |
2009.09.08 |
申请号 |
US20040565106 |
申请日期 |
2004.07.01 |
申请人 |
LG ELECTRONICS INC. |
发明人 |
HAN CHAN-HO;KIM JONG SIK |
分类号 |
H04N5/60;H04N17/02;H04N5/04;H04N9/475;H04N17/00 |
主分类号 |
H04N5/60 |
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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