公开(公告)号：US5781128A

公开(公告)日：1998-07-14

申请号：US801890

申请日：1997-02-18

申请人： Eyal Shlomot

发明人： Eyal Shlomot

IPC分类号： H04N7/26 ,  G06T9/00 ,  H03M7/30 ,  H03M7/00

CPC分类号： H03M7/3082 ,  G06T9/008

摘要： A method and system for encoding an input signal for storage or transmission over a communications channel by transforming successive vectors of parameters of the input signal into a corresponding succession of index signals, each index signal being associated with a quantized vector that corresponds to an ordered set of values of the input signal parameters. Supplying the input vector and a set of distance parameters to an artificial neural network for causing the artificial neural network to produce at least one control output signal; providing a vector quantization system composed of: at least one table having a first plurality of storage locations, each storage location storing a representative vector and having an address represented by a respective index signal; and search means for comparing each representative vector with each input signal parameter value; applying the at least one control output signal to the vector quantization system for identifying a second plurality of the storage locations, which second plurality is a subset of the first plurality of storage locations; searching, in said search means, over the second plurality of storage locations to locate that storage location of the second plurality which most closely approximates the extracted features vector according to a criterion utilizing the set of distance parameters; and outputting the index of the storage location which is found to most closely approximate the input vector.

摘要翻译： 一种用于通过将输入信号的参数的连续矢量变换成相应的一系列索引信号来对通过通信信道进行存储或传输的输入信号进行编码的方法和系统，每个索引信号与对应于有序集合的量化向量相关联 的输入信号参数值。 将输入向量和一组距离参数提供给人造神经网络，以使人造神经网络产生至少一个控制输出信号; 提供一种矢量量化系统，包括：具有第一多个存储位置的至少一个表，每个存储位置存储代表向量并具有由相应索引信号表示的地址; 以及搜索装置，用于将每个代表矢量与每个输入信号参数值进行比较; 将所述至少一个控制输出信号应用于矢量量化系统，用于识别第二多个存储位置，其中第二多个是第一多个存储位置的子集; 在所述搜索装置中搜索所述第二多个存储位置，以根据利用所述一组距离参数的标准来定位最接近所提取的特征向量的所述第二多个的所述存储位置; 并输出找到的最接近输入向量的存储位置的索引。