System for decoding the EFM and EFM-PLUS format in optical disc (CD and DVD) read units and corresponding method of decoding

摘要

System for decoding code words in the EFM-PLUS and/or EFM format in which an enumeration block (20) makes it possible to associate in a one-to-one manner with each of the code words a numerical value from a practically continuous set of numerical values, and the numerical value, possibly summed with an offset value, by an address generator (21), addresses a read-only memory (22) in which are stored information codes, each of which is associated, as decoded information, with one of the code words. <IMAGE>