METHOD AND APPARATUS FOR SPEEDING UP ATSC CHANNEL SEARCHING
    1.
    发明申请
    METHOD AND APPARATUS FOR SPEEDING UP ATSC CHANNEL SEARCHING 审中-公开
    用于加速ATSC通道搜索的方法和装置

    公开(公告)号:US20090135309A1

    公开(公告)日:2009-05-28

    申请号:US11946497

    申请日:2007-11-28

    IPC分类号: H04N5/50

    摘要: A method of reducing channel scan time is achieved by knowing important location information such a zip code. This allows a locally stored database of available broadcast channels to be used to skip unused frequencies and to allow finding the direction of the most likely broadcast station. Once one active channel is located, it is possible to calculate the most likely direction to search for the remaining active channels in the data base using a smart antenna.

    摘要翻译: 通过了解诸如邮政编码等重要的位置信息来实现减少频道扫描时间的方法。 这允许本地存储的可用广播信道的数据库用于跳过未使用的频率并且允许查找最可能的广播站的方向。 一旦定位了一个有源信道,就可以使用智能天线计算搜索数据库中剩余有效信道的最可能的方向。

    Microphone range finder
    2.
    发明授权
    Microphone range finder 失效
    麦克风测距仪

    公开(公告)号:US4586195A

    公开(公告)日:1986-04-29

    申请号:US624442

    申请日:1984-06-25

    IPC分类号: G01S15/88 H04R3/00 H04R27/00

    CPC分类号: G01S15/88 H04R27/00 H04R3/005

    摘要: A microphone ranging system for providing improved reproduced speech by compensating for the position of a speaker relative to the microphone system. An omnidirectional microphone system with a range finder for determining the distance between the omnidirectional microphone and a speaker is provided. In further embodiments, there are also provided a multiplicity of spaced range finders for determining the exact position of a speaker or speakers relative to a microphone or several microphones. Highly directional microphones are used which are trained on the speaker or speakers and follow them as they move about a room. A tracking system is controlled through signals which originate in a control circuit which is controlled by the range finders.

    摘要翻译: 麦克风测距系统,用于通过补偿扬声器相对于麦克风系统的位置来提供改进的再现语音。 提供了一种具有测距仪的全向麦克风系统,用于确定全向麦克风和扬声器之间的距离。 在另外的实施例中,还提供了多个间隔的测距装置,用于确定扬声器或扬声器相对于麦克风或几个麦克风的确切位置。 使用高度定向的麦克风,这些麦克风在扬声器或扬声器上进行训练,并且随着它们在房间移动时跟随它们。 跟踪系统通过源自由测距仪控制的控制电路的信号来控制。