Data compression/expansion on a plurality of digital information signals

摘要

A data compression apparatus is proposed for data compressing at least a first and a second digital information signal (L0,L1,L2,...,R0,R1,R2,...), each of the at least two digital information signals comprising subsequent samples. The apparatus comprises an input (1,2) for receiving the first and second digital information signal, a merging unit (6) for merging the samples of the first and second digital information signal after each other into one datastream so as to obtain a composite information signal (L0,R0,L1,R1,L2,R2,...). Further, a data compression unit (12) is available for data compressing the composite information signal so as to obtain a data compressed composite information signal and an output (16) is present for supplying the data compressed composite information signal.