| 摘要 |
PURPOSE:To minimize the latency time at the time of retrieving a bit of information by recording it to a discoid recording medium identical with a CD in shape at a faster speed than a rotating speed in the conventional recording method. CONSTITUTION:A track 2 is recorded with audio data and subcode data at double the linear speed of the CD along the direction of an arrow toward the outer circumference in the same format with the CD, whereas the length of one subcode frame on the disk is double the length of the CD. Therefore, the latency time is 1/2 of the CD. In addition, the discoid recording medium is not only the CD but whatever a discoid recording medium may be if capable of recording at a rotating speed with the number of addresses per rotation as >=2 and <=n (n: integer >=2). Then, the rotating speed is such enough as twofold or more but n-fold or less rotating speed. By this method, the latency time at the time of retrieval can be minimized.
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