Optical disk unit

Details Optical disk unit Optical disk unit

1996-09-24

1997-11-25

Hindi, Nabil

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 32, G11B 700

Patent

active

056919689

ABSTRACT:
An optical disk unit wherein a disk rotating speed is automatically adjusted for reading optical information from various optical disk types, each optical disk type requiring a different rotating speed. The optical disk unit moves an optical head to a track corresponding to a program start position, then moves the optical head to a second track which is a predetermined distance from the first track. The program time information is then read from the second track and compared with preset values. When the program time information is less than a first preset value, the optical disk unit rotates the disk at a slow speed (for example, such that a linear speed of the optical head is 1.2 m/s relative to the disk). When the program time information is less than the first preset value and greater than a second preset value, the optical disk unit rotates the disk at an intermediate speed (for example, 1.3 m/s). Finally, when the program time information is greater than the second preset value, the optical disk unit rotates the disk at a fast speed (for example, 1.4 m/s).

REFERENCES:
patent: 4675855 (1987-06-01), Iso et al.
patent: 4789975 (1988-12-01), Taniyama
patent: 4885644 (1989-12-01), Ishii et al.
patent: 5444687 (1995-08-01), Okumura
patent: 5465244 (1995-11-01), Kobayashi et al.

Affiliated with

Also associated with

Rating

Optical disk unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disk unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2113117