Methods of preformatting an optical disk

Details Methods of preformatting an optical disk Methods of preformatting an optical disk

1981-12-21

1984-01-24

McElheny, Jr., Donald

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

346 76L, 346108, 346 54, 369111, 369275, G11B 700

Patent

active

044280750

ABSTRACT:
A method for preformatting each track of an optical disk with spaced header patterns using a plurality of overlapping, individually modulated writing laser beams arranged in a line perpendicular to the track. All of the writing laser beams are derived from a single multi-line laser so as to provide high positioning stability, and adjacent beams are chosen to have different wavelengths in order to prevent the deleterious effects of coherent interference between the overlapping beams. A specific header pattern is provided on a single pass by turning on different ones of the writing beams during specific time periods as each header recording area is traversed. A laser read-after-write beam is additionally provided to permit immediate verification of the recorded header pattern.

REFERENCES:
patent: 4085423 (1978-04-01), Tsunoda et al.
patent: 4145758 (1979-03-01), Drexler et al.
patent: 4150398 (1979-04-01), Kojima et al.
patent: 4298974 (1981-11-01), Tsunoda et al.
patent: 4301527 (1981-11-01), Tsunoda et al.
patent: 4331976 (1982-05-01), Kinjo et al.
patent: 4334300 (1982-06-01), Arquie et al.
patent: 4363116 (1982-12-01), Kleuters et al.

Affiliated with

Also associated with

Rating

Methods of preformatting an optical disk does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1291251