Method of recording and reproducing data on a disk

Details Method of recording and reproducing data on a disk Method of recording and reproducing data on a disk

1995-09-29

1997-06-03

Hindi, Nabil

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369116, 369 54, G11B 700

Patent

active

056361947

ABSTRACT:
In recording data on a rewritable optical disk with a mark edge recording method, the occurrence of edge shift is compensated for. As a first power of a laser beam is greater than a second power, start and termination ends of each mark are produced by irradiation of the first power and a remaining intermediate portion of the mark is produced by irradiating the first and second powers alternately at equal intervals of a predetermined duration which is shorter than a period of a clock pulse. Also, the start and termination ends of the mark are specifically dislocated corresponding to a length of the mark and lengths of two neighbor spaces before and after the mark.

REFERENCES:
patent: 4896313 (1990-01-01), Hirose et al.
patent: 5235590 (1993-08-01), Taguchi et al.
patent: 5241524 (1993-08-01), Lee
patent: 5327411 (1994-07-01), Iwasa et al.

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