| 摘要 |
A disc-shaped recording medium (1) is rotationally driven at a velocity equal to N times a rotational velocity of the medium corresponding to the transfer rate of reproduced data so that the same position on the disc-shaped recording medium is scanned M times by a reproducing head (3) so as to read out one-track data M times to store the read out data in a memory (8). One-track playback data are formed from the data stored in the memory and transmitted at a predetermined transfer rate to perform continuous data reproduction even if the reproducing head should be deviated from a track due to vibrations or the like. A disc shaped recording medium (21) is also rotationally driven at a velocity equal t o N times a rotational velocity of the medium corresponding to the data transfer rate of continuous input data, the input data are stored in a memory (30) having a storage capacity not less than a predetermined volume and data of the predetermined volume stored in the memory are converted into record data having a data transfer rate equal to N times the data transfer rate so that the produced record data will be continuously recorded on the disc-shaped recording medium.
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