Apparatus for recording and reproducing data on a disk

Details Apparatus for recording and reproducing data on a disk Apparatus for recording and reproducing data on a disk

1994-04-04

1996-02-06

Hindi, Nabil Z.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369 54, 369116, 369 4437, 369124, G11B 390

Patent

active

054901260

ABSTRACT:
In an apparatus for recording data on a rewritable optical disk with a mark edge recording 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: 5235590 (1993-08-01), Taguchi et al.

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