Apparatus for reproducing recorded data comprising interleaved c

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval

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369 59, 369 60, 358342, 360 48, G11B 509

Patent

active

053633628

ABSTRACT:
There is provided a disc recording apparatus for recording digital data by an optical unit in such a manner that time compressed digital data are arranged into a plurality of clusters at an interval of a predetermined number of sectors, a cluster-linking sector having a length longer than an interleaving length is provided at each linking part of each cluster, and the digital data are subsequently interleaved and recorded on a disc-shaped recording medium so that interleaving at the time of data recording on the cluster-by-cluster basis is within the range of the cluster-linking sector. There is also provided a disc reproducing apparatus for reproducing digital data by an optical unit in which playback data are obtained by reproducing record data recorded on a disc-shaped recording medium in such a manner that a cluster-linking sector longer than an interleaving length is provided in a linking section of each cluster composed of a predetermined number of sectors, the resulting data is interleaved and recorded on the disc-shaped recording medium, and the playback data are deinterleaved and freed or the cluster-linking sectors so as to be stored transiently in a storage unit. Playback data are written in the storage unit when the data volume of playback data stored in the storage unit becomes smaller than a predetermined volume to maintain a readout space in the storage unit which is in excess of the predetermined data volume. In this manner, data may be read out continuously from the storage unit at a predetermined rate without interrupting the reproducing operation at the cluster-linking sector of the data recorded on the medium.

REFERENCES:
patent: 4733385 (1988-03-01), Henmi et al.
patent: 4816928 (1989-07-01), Sasaki et al.
patent: 5081538 (1992-01-01), Takei et al.
patent: 5099464 (1992-03-01), Maeda
patent: 5119209 (1992-06-01), Okano
patent: 5130816 (1992-07-01), Yoshio
patent: 5214631 (1993-05-01), Maeda et al.

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