公开(公告)号：EP1225704A1

公开(公告)日：2002-07-24

申请号：EP01830014.5

申请日：2001-01-12

Applicant: STMicroelectronics S.r.l.

Inventor： Sirtori, Daniele ,  Pau, Danillo

IPC: H03M7/30 ,  H04N7/26

CPC classification number: H03M7/30 ,  H04N19/00

Abstract: A process for converting signals in the form of digital data, such as various types of video/audio/data signals for example, between an original format, in which each data item includes a certain number of digits, and a compressed format, in which each data item includes a smaller number of digits. The process includes the operation of associating the data with a configuration including:

a first field identifying the number of sub-blocks into which the said certain number of digits are subdivided,
a second field that identifies, within the said sub-blocks, respective sections (A 1 , A 2 , A 3 and A 4 ; B 1 , B 2 , B 3 and B 4 ; C 1 , C 2 , C 3 and C 4 ), each one including a given number of digits, and
a third field that identifies, for each these sections, one of a plurality of applicable modes (average, compression, transmission "as is", etc.) that can be adopted for converting the digits in the section between the original format and the compressed format.
The process can be used to advantage at both the compression level (40) and the decompression level (80) for optimising dimensions, technology and methods of implementation, access types and speeds, etc. of memory (60) functions on computer systems, in particular for the real-time processing of audio and video signals.

Abstract translation: 一种用于在原始格式中的数字数据，：诸如各种类型的视频/音频/数据信号对于实施例的形式的信号转换之间的过程，其中，每个数据项包括的位数一定数目，和压缩格式，其中 每个数据项包括的位数较小的数字。 该方法包括操作所述数据与配置，包括相关联的：第一字段，其标识的子块到其中的数字的所述一定数目的细分数目，第二字段做标识，所述的子块，respectivement区段内 （A1，A2，A3和A4; B1，B2，B3和B4; C1，C2，C3和C4），每一个包括数字的给定数量，和第三字段做标识，对于每一个合成部分，一个一 适用模式多个（平均，压缩，传输“原样”等）确实卡恩采用原始格式和压缩格式之间的转换部的数字。 该方法可以用于在这两个压缩级（40）和用于优化的尺寸，技术和实施的方法中，访问类型和速度，存储器等。（60）的功能在计算机系统的解压缩级（80）有利地，在 特别是音频和视频信号的实时处理。