Digital information recording-reproducing apparatus

摘要

A digital information recording-reproducing apparatus is disclosed, in which a signal temporally compressed to 1/n and transmitted is encoded for recording by a recording encoder (40). The rotation speed of a rotary drum (50) is set at R 1 , and the running speed of a magnetic tape (60) at V 1 . The signal encoded is recorded on the magnetic tape (60) by magnetic heads (51a, 51b). At the time of reproduction, the rotary drum (50) is driven at a speed m/n times faster than for recording, and the magnetic tape (60) is run at a speed 1/n times faster than for recording. The signal reproduced by the magnetic heads (51a, 51b) is decoded and restored into the original digital information signal by a reproducing decoder (70). As a result, there is provided a recording-reproducing apparatus having the function of time-base expansion with a reduced recording time applied to a system for transmitting and recording the software information of video or the like through radio wave or cable.