Patent ID: 7493637

Claim:
Arrangement ( 1 ) for transmission of signal units to at least one receiver ( 3 ), comprising: a receiving means ( 9 ) for receiving a number of signal units within a frequency range, whereby each signal unit includes at least one signal, a forwarding means ( 12 ) for making possible for at least a portion of said signal units to be forwarded or at least partially be blocked with respect to said receiver ( 3 ), a registering means ( 13 ) for including a register ( 17 ) over at least those signal units to which said receiver ( 3 ) has authorized access, whereby said forwarding means ( 12 ) is arranged to exclusively forward such signal units that correspond to a corresponding signal unit in said register ( 17 ), where said register is an active register in which it is possible to erase stored signal units and add further signal units, and where said register ( 17 ) is arranged such that said erasure and addition can be effected via a communication system, and a verification means ( 14 ), which includes a memory unit ( 18 ) for storing at least those signal units to which said receiver ( 3 ) has authorized access and which is arranged to verify that the signals being forwarded by said forwarding means ( 12 ) correspond to a corresponding signal unit in said memory unit ( 18 ), whereby if said forwarded signal units do not correspond to a corresponding signal unit in the memory unit ( 18 ) a particular signal unit is being registered by means of a specific signal in a register unit ( 19 ).