A DC compensation module for suppressing the DC content of a signal containing a periodic sequence comprises a signal transport path (10), a signal compensation path (13) and a combination unit (11). The signal transport path (10) transfers the signal from the input of the module to an input on the combination...http://www.google.fr/patents/US5917867?utm_source=gb-gplus-shareBrevet US5917867 - Method and apparatus for DC compensation