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1. 发明授权

US06108381A Tree search vector quantization for compressing digital video data to be stored in buffers and MPEG decoder and SQTV processor with reduced memory requisites 失效
标题翻译：用于压缩要存储在缓冲器中的数字视频数据的树搜索矢量量化，具有减少的存储器必需品的MPEG解码器和SQTV处理器
公开(公告)号：US06108381A
公开(公告)日：2000-08-22
申请号：US17413
申请日：1998-02-02
申请人： Danilo Pau , Roberta Bruni , Roberto Sannino
发明人： Danilo Pau , Roberta Bruni , Roberto Sannino
IPC分类号： H04N5/92 , G06F17/30 , G06T9/00 , G06T9/40 , H03M7/30 , H04N7/01 , H04N7/26 , H04N7/28 , H04N7/32 , H04N7/50 , H14N7/12
CPC分类号： G06T9/008 , G06T9/40 , H04N19/423 , H04N19/61 , H04N19/94
摘要： A method for reducing the RAM requirement for temporarily storing a stream of data blocks in a coding/decoding system of information transferable by blocks, includes the steps of: compressing and coding the data by blocks through a tree search vector quantization (TSVQ); storing TSVQ compressed and coded data in the RAM; and decoding and decompressing in a subsequent reading of the data stored in the RAM the coded and compressed data, thereby reconstituting the stream of digital data blocks. The method may include fixing a certain scanning path of each data block of the stream to be decomposed into vectors of preestablished dimensions; coding the first vector of the scanning of a certain block of data in an unmodified manner; generating a replica vector of the last coded vector and calculating a prediction error vector; quantizing according to a binary search in a table of read-only quantized vectors the prediction error, by coding its address in the table; and repeating several of the steps for all the vectors of the scanning of each input data block.
摘要翻译：一种减少用于将数据块流临时存储在块可传输信息的编码/解码系统中的RAM要求的方法，包括以下步骤：通过树搜索矢量量化（TSVQ）对数据进行压缩和编码; 将TSVQ压缩和编码数据存储在RAM中; 并且在随后读取存储在RAM中的数据的解码和解压缩编码和压缩数据，从而重构数字数据块流。该方法可以包括将要分解的流的每个数据块的特定扫描路径固定成预先建立的维度的向量; 以未修改的方式对特定数据块的扫描的第一向量进行编码; 生成最后编码矢量的副本矢量并计算预测误差矢量; 根据在只读量化矢量的表中的二进制搜索量化量化该预测误差，通过对其表中的地址进行编码; 并且对于每个输入数据块的扫描的所有向量重复若干步骤。

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