Digital signal recording and reproducing apparatus.

摘要

Digital signal recording and reproducing apparatus records digital signals in successive tracks on a record medium (T) and reproduces digital signals therefrom. A rotary head assembly (11) including two pairs of head sub-assemblies separated by 180 DEG , with each sub-assembly comprising a pair of heads (H) displaced from each other in a direction parallel to the track pitch, is driven at a predetermined rotational speed to record digital signals selectively supplied at respectively different original transmission rates which have a predetermined ratio. The digital signals are timebase modified (7) to have substantially the same data rate even although their original transmission rates differ from each other. The record medium (T) is driven (14) during a recording mode at respectively different speeds determined by the original transmission rate of the selectively supplied digital signal, whereby the number of tracks recorded on the record medium (T) during a unit time period (TP) corresponds to the original transmission rate. The record medium (T) is driven during a reproducing mode at the same speed as was used during recording, whereby during the unit time period (TP) the rotary head assembly (11) reproduces digital signals from twice the number of tracks that had been recorded during that same time period TP. <IMAGE> <IMAGE>