Patent ID: 7680807

Claim:
Method for processing an original digital file consisting of a single component of audio, image and/or video file on grey level and/or a number of components of multi-channel audio files, RGB, CMJN, YUV images and/or of RGB and YUV video files, said original digital file being presented in an original form and having a plurality of couples of values, each of said couple comprising a higher value which constitutes an integrated value and a lower value, the two values of each of said couple belonging to a same component or to different components of said original file, said method successively comprising a compressing step for reducing said original file to obtain a compressed file by replacing each of said couples of values by a single compressed representative value which comprises references to said higher value and said lower value to allow an encoder to calculate a reconstituted file having said original form by using said references, said compressing step comprising a phase of calculating an integrated value which is a quotient of a number which represents said lower value by a number which represents said integrating value, a phase of compressing the integrating value according to a desired compression rate an/or error rate to obtain a compressed integrating value, by adding to said compressed integrating value said integrated value to obtain said single compressed representative value and a phase of coding said representative value on one or two bytes.