' Compact Disc : system aspects and modulation

Fig.!. The Compact Disc system, considered as a transmission system that brings sound from the studio into the living room. The transmission channel between the encoding system (COD) at the recording end and the decoding system (DECaD) in the player, 'transmits' the bit stream Bi to DECOD via the write laser, the master disc (MD), the disc manufacture, the disc (D) in the player and the optical pick-up; in the ideal case Bo is the same as Bi. The bits of Bo, as well as the clock signal (Cl) for further digital operations, have to be detected from the output signalof the pickup unit at Q. Philips tech. Rev. 40, 157-164, 1982, No. 6