发明申请
US20100229191A1 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生成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生成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: US20100229191A1公开(公告)日: 2010-09-09
- 发明人: Cheuk Wan Chan
- 申请人: Cheuk Wan Chan
- 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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