Communication system and method between a recording and/or reproducing device and a remote unit

摘要

The present invention relates to a communication and/or reproducing device ( 20 ) able to read a data carrier ( 22 ) and a remote unit ( 10 ) comprising additional data ( 11 ) for the data carrier ( 22 ). The recording and/or reproducing device ( 20 ) and the remote unit ( 10 ) communicate via a network ( 30 ). The remote unit ( 10 ) is able to retrieve data carrier properties ( 23 ) from the data carrier ( 22 ) inserted in the recording and/or reproducing device ( 20 ), and to authenticate said data carrier ( 22 ) by comparing said properties ( 23 ) with the ones of a corresponding data carrier legally produced by a provider, before sending the additional data ( 11 ) to said recording and/or reproducing device ( 20 ).