MAGNETIC RECORDING AND REPRODUCING APPARATUS FOR AUTOMATICALLY SETTING THE TRAVELING SPEED OF THE RECORDING MEDIUM IN ACCORDANCE WITH THE TRANSMISSION RATE OF THE INPUT DIGITAL SIGNAL.

摘要

MAGNETIC RECORDING AND REPRODUCING APPARATUS USES A FIRST AZIMUTH HEAD (27a) AND A SECOND AZIMUTH HEAD (27b) ARRANGED ON A ROTATIONAL DRUM REVOLVING AT A CONSTANT SPEED. IN A RECORDING OPERATION, INPUT DIGITAL SIGNALS ARE PROCESSED IN A RECORDING SYSTEM (12) FORMING BLOCKS OF DIGITAL RECORDING SIGNALS, THE RECORDING SIGNALS TOGETHER WITH AN INFORMATION SIGNAL GENERATED IN A CONTROL UNIT (39), ARE RECORDED BY THE FIRST AND SECOND HEADS ON THE MAGNETIC TAPE (T) MOVED BY A TAPE DRIVING UNIT (40). IN A REPRODUCING OPERATION, RECORDED SIGNALS ARE READ THROUGH THE FIRST AND SECOND HEADS AND REPRODUCED IN A SIGNAL REPRODUCING SYSTEM (13). THE TAPE IS MOVED AT A FIRST TRAVELLING SPEED WHEN THE INPUT OR THE READ OUT SIGNAL HAS A STANDARD DATA RATE, AND IS MOVED AT A SECOND TRAVELING SPEED OF 1/N THE FIRST TRAVELING SPEED (N IS A NATURAL NUMBER) WHEN THE INPUT OR THE READ OUT DIGITAL SIGNAL HAS A SECOND DATA RATE OF 1/N THE STANDARD DATA RATE.