公开(公告)号：US5842134A

公开(公告)日：1998-11-24

申请号：US535932

申请日：1995-09-28

申请人： Thomas A. Brown ,  Robert Canada

发明人： Thomas A. Brown ,  Robert Canada

IPC分类号： H04H20/67 ,  H04B7/005 ,  H04B7/01

CPC分类号： H04H20/67

摘要： In a wide band radio frequency (RF) simulcast communications system analog voice signals are distributed in a digitized form over high speed data channels and processed as high speed data. A conventional Ericsson, Inc. EDACS.TM. simulcast communications system is improved by altering the apparatus and manner by which "clear voice" (unencrypted analog voice) is distributed from a control point and "aligned" at multiple transmitter sites for simultaneous RF broadcasting. In the improved arrangement, the EDACS.TM. simulcast system inherent digital data stream alignment process produces the requisite time domain alignment for the digitized "clear voice" signals without the need for costly analog audio alignment procedures and equipment.

摘要翻译： 在宽带射频（RF）联播通信系统中，模拟语音信号以高速数据信道以数字化形式分布，并作为高速数据进行处理。 通过改变从控制点分发“清除语音”（未加密的模拟语音）并在多个发射机站“对准”同时进行RF广播的装置和方式来改进传统的爱立信公司EDACS TM联播通信系统。 在改进的布置中，EDACS TM联播系统固有的数字数据流对准过程为数字化的“清晰语音”信号产生必要的时域对准，而不需要昂贵的模拟音频对准过程和设备。