公开(公告)号：US3718768A

公开(公告)日：1973-02-27

申请号：US3718768D

申请日：1971-08-09

申请人： ADAPTIVE TECH

发明人： ABRAMSON C ,  JONES D ,  NADIR M

IPC分类号： H04J3/24 ,  H04B1/66 ,  H04B14/04 ,  H04J3/16 ,  H04J3/26 ,  H04J3/04

CPC分类号： H04J3/1688 ,  H04B1/66 ,  H04J3/26 ,  Y10S370/914

摘要： Voice and other analog information are transmitted from one to another of a plurality of stations in a communications system wherein, at the sending stations, an encoder samples the voice or other analog signal for sets of values of one or more characteristics, and assigned codes corresponding to the sampled sets of values are stored in sequence in a buffer. Each of the codes corresponding to the sample characteristics is assigned to respective ones of a multiplicity of discrete subperiods within each of a series of periods (P). Signal identifying receiving stations are inserted at indiscriminate rates on the transmission medium into the available subperiods having assigned meanings corresponding to the stored codes in a manner which removes the stored codes in sequence from the buffer. Each receiving station detects its own identification signal on the transmission medium and correlates the subperiods in which the identification signals are detected with their respective assigned codes. A decoder converts such correlated codes to their respective assigned sets of sample values from which it reconstructs the original voice or other analog signal. The system permits different and/or continuously varying sampling rates to be used by the stations without requiring fixed time or frequency channels. Thus, the system is generally insensitive to the kind of analog input signal waveform presented for encoding, or the type of encoding or decoding technique employed.

摘要翻译： 语音和其他模拟信息在通信系统中的多个站中从一个站点发送到另一个站点，其中在发送站处，编码器对一个或多个特征值的集合对语音或其他模拟信号进行采样，并且分配的代码对应 到采样的值集合被顺序存储在缓冲器中。 将与采样特性相对应的每个代码分配给一系列周期（P）的每一个内的多个离散子周期中的相应的一个。 信号识别接收站以传送介质上的不分青红皂白的速率被插入到具有与所存储的代码相对应的含义的可用子段中，其方式是从缓冲器中依次移除存储的代码。

公开(公告)号：US3754098A

公开(公告)日：1973-08-21

申请号：US3754098D

申请日：1971-10-08

申请人： ADAPTIVE TECH

发明人： ABRAMSON C ,  JONES D

IPC分类号： H04L5/24 ,  H04L25/05 ,  H04J3/06

CPC分类号： H04L5/24 ,  H04L25/05

摘要： A system and method for deriving a decoding rate to be used by a periodic decoder in reconstructing an analog or voice waveform from asynchronously received sample data that was generated at an unknown and possibly changing periodic encoding rate. Sample data representing a particular defining characteristic of a waveform at unknown but substantially uniformly spaced times is received asynchronously at a generally non-uniform rate. The sample data is stored in a buffer memory until used by a periodic decoder to reconstruct the waveform. The rate at which the periodic decoder uses samples to reconstruct the waveform is adjusted in accordance with the number of samples stored in the buffer such that the number of stored samples tends toward a median number.

摘要翻译： 一种用于导出周期性解码器使用的解码速率的系统和方法，用于以未知且可能改变的周期性编码速率生成的异步接收的采样数据重构模拟或语音波形。 以未知但基本均匀间隔的时间表示波形的特定定义特性的采样数据以非常均匀的速率异步地接收。 样本数据存储在缓冲存储器中，直到由周期性解码器用来重建波形。 根据存储在缓冲器中的样本数量来调整周期性解码器使用采样来重建波形的速率，使得存储的样本数趋向于中间数。