发明授权
US08087042B2 Methods and apparatus to detect an internally generated signal mode of a local media playback device
有权
检测本地媒体播放设备的内部产生的信号模式的方法和装置
- 专利标题： Methods and apparatus to detect an internally generated signal mode of a local media playback device
- 专利标题（中）： 检测本地媒体播放设备的内部产生的信号模式的方法和装置
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申请号： US12784137申请日： 2010-05-20
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公开(公告)号： US08087042B2公开(公告)日： 2011-12-27
- 发明人: Cheuk Wan Chan
- 申请人： Cheuk Wan Chan
- 申请人地址： US IL Schaumburg
- 专利权人： The Nielsen Company (US), LLC
- 当前专利权人： The Nielsen Company (US), LLC
- 当前专利权人地址： US IL Schaumburg
- 代理机构： Hanley, Flight & Zimmerman, LLC
- 主分类号： H04H60/32
- IPC分类号： H04H60/32
摘要：
Methods and apparatus to detect an internally generated signal mode of a local media playback device are disclosed. A disclosed method comprises tuning a harmonic frequency of a chrominance signal output by a local media playback device, and determining that the local media playback device is in an internally generated signal mode if the measured harmonic frequency exceeds a predetermined threshold.
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