Information recording/reproducing method

Abstract

According to an information recording / reproducing method by which, at recording or reproduction of data, the data are temporarily stored in a memory to perform the recording or reproduction, when recording or reproduction of the data stored in the memory is performed with dividing data, recording or reproduction of subsequent data is performed without dividing the data, and when recording or reproduction of the data stored in the memory is performed without dividing data, recording or reproduction of subsequent data is performed with divided the data. Accordingly, in a disc device that records or reproduces video on / from a disc, when data stored in a memory is recorded or reproduced without dividing the data and thereafter subsequent recording or reproduction is performed, a rotational delay would not occur, and the increase in the recording / reproduction execution time resulting from the rotational delay is avoided, whereby the data recording / reproduction execution time can be optimized.

Description

technical field [0001] The present invention relates to an information recording and reproducing method, in particular to an information recording and reproducing method in a device for recording or reproducing information on a disk information carrier. Background technique [0002] In a disk device that records a video signal in DV (Digital Video) format on a disk or reproduces a video signal in DV format from the disk, in the case of recording or reproducing continuous image data, on the disk, or from the disk Data is recorded or reproduced while switching heads and discs from the outer circumference to the inner circumference, or from the inner circumference to the outer circumference in the order of LBA (Logical Block Address: Logical Block Address). [0003] In this case, recording or reproduction takes time because there is a possibility that rotation waits due to command overhead and repeated rotation waits due to errors may occur during recording or reproduction. In...

AI Technical Summary

Problems solved by technology

[0012] However, as in the above-mentioned information recording and reproducing method of Conventional Example 1 or Conventional Example 3, recording or reproduction of data corresponding to the LBA is performed from a position on the disc where recording or reproduction is commanded to be possible, and the following cannot be recorded or reproduced. The data portion records or reproduces data corresponding to the LBA from the rear on the disc. In this case, as in the conventional example 1 of FIG. 12 (a) or the conventional example 3 of FIG. 12 (c), there are There is a problem that the recording time cannot be fully optimized when there is one turn wait (after recording unit 2 or 4) after recording without dividing the data stored in the frame memory

[0013] In addition, as in the above-mentioned information recording and reproducing method of Conventional Example 2 or Conventional Example 4, the LBA at which recording or reproduction of data is started is determined in advance to a value larger than the LBA at which recording or reproduction is issued to enable recording or reproduction. Begin recording or reproduction at the position on the disc of the LBA that is commanded to start recording or reproduction, and record or reproduce data corresponding to the LBA, and then start recording or reproduction at the position on the disc corresponding to the portion of the data that is not recorded or reproduced. In the case of recording or reproducing data equivalent to LBA, as shown in Conventional Example 2 of FIG. 12(b) or Conventional Example 4 of FIG. In the case of continuous recording or continuous playback, the recording time reduction effect is small

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