Method of improving coding security

摘要

The digital image signals (BS) which concern the image content are converted into data signals (DS) by a data reduction procedure, and completed by random information (RI) or control information (KI) of an error-correcting code, after division into data blocks (DB1, DB2, ...) and interleaving. The redundant completed data signal (CDS/EDS) is divided into code blocks, which are scrambled with each other, or submitted to a (simple, for time reasons) coding procedure.