Receiver for audio enhancement and method therefor
    1.
    发明授权
    Receiver for audio enhancement and method therefor 有权
    音频增强接收机及其方法

    公开(公告)号:US06741844B2

    公开(公告)日:2004-05-25

    申请号:US09995084

    申请日:2001-11-27

    IPC分类号: H04Q720

    摘要: A receiver (10) includes an antenna (12), a preselector (14), an amplifier (16), a mixer (18), a filter (20), a signal strength measurement circuit (22), a radio frequency signal detector (26), and a processor (24). The processor (24) is programmed to receive a signal indicator level (42) from the signal strength measurement circuit (22), generate an automatic gain control command (44) based on the received signal indicator level (42), and send the automatic gain control command (44) to the amplifier (16) to control a gain of the amplifier (16). The processor (24) is programmed to receive an off channel signal strength (48) from the radio frequency signal detector (26), compare the off channel signal strength (48) to one or more threshold levels, generate a filter command (46), and send the filter command (46) to the filter (20). The filter command (46) identifies a cutoff frequency for the filter (20).

    摘要翻译: 接收器(10)包括天线(12),预选器(14),放大器(16),混频器(18),滤波器(20),信号强度测量电路(22),射频信号检测器 (26)和处理器(24)。 处理器(24)被编程为从信号强度测量电路(22)接收信号指示器电平(42),基于接收到的信号指示器电平(42)产生自动增益控制命令(44),并发送自动 增益控制指令(44)到放大器(16)以控制放大器(16)的增益。 处理器(24)被编程为从射频信号检测器(26)接收离开信道信号强度(48),将关闭信道信号强度(48)与一个或多个阈值电平进行比较,生成滤波器命令(46) ,并将过滤器命令(46)发送到过滤器(20)。 滤波器命令(46)识别滤波器(20)的截止频率。

    Communication device and method of operation therefore
    3.
    发明授权
    Communication device and method of operation therefore 有权
    因此通信设备和操作方法

    公开(公告)号:US07096025B2

    公开(公告)日:2006-08-22

    申请号:US10733661

    申请日:2003-12-11

    IPC分类号: H04Q7/20

    CPC分类号: H04W4/16 H04W88/06

    摘要: A communication device (105,200) includes a cordless telephone (205) and a two way radio (210). The communication device (105,200) is adapted to place an active cordless telephone call in a low frequency mode in response to receiving an incoming two way radio communication. The communication device (105,200) is adapted to then establish communication within the two way radio communication. The communication device (105,200) periodically re-establishes the cordless telephone call to maintain communication with a cordless base station (120) until the two way radio communication is completed.

    摘要翻译: 通信设备(105,200)包括无绳电话(205)和双向无线电(210)。 响应于接收到进入的双向无线电通信,通信设备(105,200)适于将主动无绳电话呼叫置于低频模式。 通信设备(105,200)适于在双向无线电通信中建立通信。 通信设备(105,200)周期性地重新建立无绳电话呼叫,以维持与无绳基站(120)的通信,直到双向无线电通信完成。