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1. 发明授权

US06741844B2 Receiver for audio enhancement and method therefor 有权
标题翻译：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
申请人： Joseph J. Medvid , Dang N. Vu , Branko Avanic
发明人： Joseph J. Medvid , Dang N. Vu , Branko Avanic
IPC分类号： H04Q720
CPC分类号： H04B1/18 , H03G3/3052 , H04B1/1027 , H04B1/109
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。

2. 发明授权

US08295825B2 Method to facilitate late joining of a call 有权
标题翻译：方便后期加入电话
公开(公告)号：US08295825B2
公开(公告)日：2012-10-23
申请号：US12957190
申请日：2010-11-30
申请人： Ellis A. Pinder , Branko L. Avanic , Lorenzo J. Cruger , Tan V. Dinh , Mahes M. Ekanayake , Armando J. Gonzalez , Joseph P. Heck , Shakeeb Z. Khan , Joseph J. Medvid, III , Wayne M. Phang , Charles R. Ruelke , Dang N. Vu , Richard S. Young
发明人： Ellis A. Pinder , Branko L. Avanic , Lorenzo J. Cruger , Tan V. Dinh , Mahes M. Ekanayake , Armando J. Gonzalez , Joseph P. Heck , Shakeeb Z. Khan , Joseph J. Medvid, III , Wayne M. Phang , Charles R. Ruelke , Dang N. Vu , Richard S. Young
IPC分类号： H04W4/00
CPC分类号： H04W76/40
摘要： Methods of enabling late entry into an on-going spread spectrum call are described. A late join frame replaces, and has the same size as, a traffic frame. A late join slot in the late join frame contains sufficient information in preamble and sync subframes to permit a target to join the call. The traffic slots in the late join frame replicate data such that call quality of the call is substantially unaffected if one of the remaining traffic frames is not received. The preamble and sync subframes frequencies may be the same as, or different from, preamble and sync frames frequencies during a call establishment phase of the call. If different, the preamble and sync subframes frequencies are selected from one or more frequencies. Use of the preamble and sync subframes frequencies is compensated for when selecting the traffic slot frequencies to obtain uniform utilization of the spectrum.
摘要翻译：描述了能够延迟进入正在进行的扩频呼叫的方法。后期连接框架替换并具有与交通帧相同的大小。晚连接帧中的延迟加入时隙包含前导码和同步子帧中足够的信息，以允许目标方加入呼叫。后期加入帧中的业务时隙复制数据，使得如果未接收到剩余业务帧之一，则呼叫的呼叫质量基本上不受影响。前导码和同步子帧频率可以在呼叫的呼叫建立阶段期间与前同步码和同步帧频率相同或不同。如果不同，则从一个或多个频率中选择前同步码和同步子帧频率。当选择业务时隙频率以获得频谱的均匀利用时，对前导码和同步子帧频率的使用进行补偿。

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