Magnet disc matrix controller used for network recording unit consists of a magnetic disc controlling unit, an interface converter and a network interface. The said disc controlling unit has a parallel interface to provide several groups of parallel signals and a common bus interface to receive or to transmit recorded data. The interface converter receives each group of parallel signals and convert them into correspondant differential signals when the disc matrix controller transmits data out. The interface converter does the contray operation when the disc matrix controller receives data. |