Non-reversible differential predictive compression using lossy or lossless tables

A coding device for lossless coding of a sequence of data symbols, which is to be transmitted or stored, comprising:

• means for coding in a lossless manner each symbol with a dynamic range preserving difference symbol representing a difference between a current symbol and a predicted symbol so that the coded symbol or an estimate of the coded symbol can be determined with knowledge of the predicted symbol and of the difference symbol, and
• means for coding said difference symbol in a non-reversible manner so that a preceding symbol cannot be uniquely determined by the coded symbol and the difference symbol.

A method of lossless or lossy coding of a sequence of data symbols, which is to be transmitted or stored, comprising:

• coding each symbol by way means of a non-permutative group multiplication table, with a dynamic range preserving difference symbol representing a difference between a current symbol and a predicted symbol so that the coded symbol or an estimate of the coded symbol can be determined with knowledge of the predicted symbol and of the difference symbol.

A device for lossless or lossy coding of a sequence of data symbols, which is to be transmitted or stored, characterized by

• means for coding each symbol with a dynamic range preserving difference symbol representing a difference between a current symbol and a predicted symbol so that the coded symbol or an estimate of the coded symbol can be determined with knowledge of the predicted symbol and of the difference symbol, and means for coding said difference symbol by means of a non-permutative group multiplication table.