发明名称 |
METHODS AND APPARATUS TO DISTINGUISH A SIGNAL ORIGINATING FROM A LOCAL DEVICE FROM A BROADCAST SIGNAL |
摘要 |
<p>Methods and apparatus to distinguish a signal originating from a local device (102) from a broadcast signal are disclosed. A disclosed system classifies a video component of an audio-video signal by analyzing a histogram of pixel data (408), analyzing a quality factor (409), and/or attempting to detect embedded data (410) in the video component. The disclosed system also classifies an audio component of the audio-video signal by attempting to detect embedded audio data and/or analyzing waveform energy associated with the audio component. A source of the audio-video signal is determined based on the video classification and/or the audio classification.</p> |
申请公布号 |
CA2551998(C) |
申请公布日期 |
2015.11.17 |
申请号 |
CA20042551998 |
申请日期 |
2004.12.10 |
申请人 |
NIELSEN MEDIA RESEARCH, INC. |
发明人 |
RAMASWAMY, ARUN;NELSON, DAN |
分类号 |
H04N17/00 |
主分类号 |
H04N17/00 |
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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