OPTICAL SIGNAL RECEIVING UNIT AND APPARATUS FOR REPRODUCING INFORMATION

摘要

The optical signal receiving unit ( 10 ), which receives and processes an optical signal, can be programmed by the optical signal. The optical signal is detected by an optical sensor ( 20 ) and processed by a signal processor ( 40 ). The signal processor ( 40 ) has an operating mode, which is set by a programmable control unit ( 30 ). The control unit ( 30 ) is programmable by a program signal derived from the optical signal. In one embodiment the optical signal receiving unit ( 10 ) can be switched between two operating modes by a program switch signal provided at a program switch terminal ( 53 ). The apparatus ( 100 ) for reproducing information from an optical data carrier ( 101 ) comprises an optical signal receiving unit ( 10 ) according to the invention.