Method and apparatus for monitoring TV channel selecting status
    2.
    发明申请
    Method and apparatus for monitoring TV channel selecting status 审中-公开
    监控电视频道选择状态的方法和装置

    公开(公告)号:US20080082995A1

    公开(公告)日:2008-04-03

    申请号:US11888849

    申请日:2007-08-02

    IPC分类号: H04H9/00

    摘要: To accurately detect the channel being actually selected by a TV having built therein a digital tuner, a terminal device connected to the TV analyzes the preamble of a digital audio signal from the TV to thereby detect a change of audio data-type, and for each viewing period from the time of the change of audio data-type to the time of the next change of audio data-type, generates viewing block data containing comparison feature data extracted from data-bursts within the viewing period concerned and time data of the viewing period concerned, and transmits the generated viewing block data to a center apparatus. The center apparatus identifies, for each viewing block, the actually selected channel by making a comparison between the comparison feature data contained in the viewing block data received from the terminal device and reference feature data contained reference data of each channel stored in the reference data storage part.

    摘要翻译: 为了精确地检测由内置数字调谐器的TV实际选择的频道,连接到TV的终端装置分析来自TV的数字音频信号的前置码,从而检测音频数据类型的变化,并且对于每个 从音频数据类型的改变到下一次改变音频数据类型的时间的观看期间,生成观看块数据,其包含从相关观看时段内的数据突发提取的比较特征数据和观看时间数据 并将生成的观看块数据发送到中心设备。 中心装置通过在从终端装置接收到的观看块数据中包含的比较特征数据和包含存储在参考数据存储器中的每个频道的参考数据的参考特征数据之间进行比较来识别实际选择的频道 部分。