Patent ID: 6275535
Filing Date: 2001-08-14
Classification: H04N

Abstract:
A method for decoding an image including compressed data, the compressed data comprising successive groups of compressed data, which groups relate respectively to successive inbound images, some of which require two successive decodings, each data group associated with an image comprising a start-of-image identifier, followed by a header containing a specific identifier of the image, followed by useful data, the method comprising the steps of:storing a stream of compressed data in a memory area of a dynamic memory;reading the stream of compressed data in packets of bits located at consecutive addresses of the memory area;detecting the presence or the absence of the start-of-image identifier for the packets read from the memory area;storing the address of a relevant packet together with the specific identifier of the image when a detected start-of-image identifier corresponds to an image requiring two successive decodings;performing a first decoding of the useful data of the image;reading the packet data at the stored address from the memory area again; andperforming the second decoding of the image by decoding the packet data following the specific identifier and ignoring the packet data preceding the specific identifier.