Patent ID: 6894961
Filing Date: 2005-05-17
Classification: G11B

Abstract:
1. A recordable optical disk where disk-applicable-recording-speed information indicative of applicable recording speeds for the optical disk is pre-recorded on a track of said optical disk during manufacture of the optical disk, wherein the disk-applicable-recording-speed information is pre-recorded in pre-groove wobbles or pre-pits of the optical disk, the disk-applicable-recording-speed information is information indicative of lower and upper limit values of the applicable recording speeds, and one of the lower and upper limit values of the applicable recording speeds is incorporated in lead-in start time information recorded in the pre-groove wobbles or pre-pits of the optical disk and another of the lower and upper limit values of the applicable recording speeds is incorporated in lead-out start time information recorded in the pre-groove wobbles or pre-pits of the optical disk.