Disk data reproduction device using NRZI modulated data

Details Disk data reproduction device using NRZI modulated data Disk data reproduction device using NRZI modulated data

2007-05-22

2007-05-22

Korzuch, William (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

Reexamination Certificate

active

10294252

ABSTRACT:
The present invention relates to an optical disk device and can be applied to, for example, a reproduction system of a phase-change-type optical disk device handling high density recording in order to improve the detection accuracy of specific patterns, such as a synchronizing pattern, without increasing the redundancy of the format. A specific pattern is detected by using NRZI data D1R that is obtained by signal processing of a reproduction signal DRF, and has been NRAI-modulated from pulse-position-modulated data D2R.

REFERENCES:
patent: 5229986 (1993-07-01), Mizokami et al.

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