Patent ID: 7505391

Claim:
An arrangement for reading an information carrier, said arrangement comprising: a read head for scanning the information carrier along a scanning path and thereby generating one or more electrical signals in response to a pattern recorded along the scanning path; a signal processing unit for processing the one or more electrical signals; and electrical conductors for conveying the one or more electrical signals to the signal processing unit, wherein the arrangement further comprises controllable termination means for terminating at least one electrical conductor with a selectable impedance, the controllable termination means comprising at least two impedances and selecting means for selecting an impedance to terminate the at least one electrical conductor, wherein the read head performs the scanning by transmitting a radiation beam to the information carrier and receiving a reflected radiation beam from the information carrier, wherein the arrangement further comprises measuring means for measuring the reflectance of the radiation beam, and wherein the controllable termination means selects an impedance dependent on the measured reflectance of the radiation beam.