Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Patent
1998-06-04
2000-07-25
Huber, Paul W.
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
369124, G11B 576
Patent
active
060944072
ABSTRACT:
Device for reducing a jitter in an optical disc, is disclosed, including a DVD formatter for providing a DVD format signal according to a DVD source signal, a pulse width adjuster for separating the DVD format signal from the DVD formatter into signals of frequencies each being a certain times of a basic clock, comparing the signals to a reference voltage, and adjusting a pulse width of each of the signals according to results of the comparisons, a DVD signal extractor for adding the signals each having the pulse width adjusted in the pulse width adjuster in extracting a pulse width adjusted DVD signal, and amplifying the pulse width adjusted DVD signal, and a laser beam recorder for directing a laser beam onto a DVD according to the DVD signal extracted and amplified in the DVD signal extractor to form pits corresponding to the frequency of the certain times in the DVD, and a method for reducing a jitter in an optical disc, whereby facilitating individual adjustments of pulse widths of DVD format signals from the DVD formatter according to a reference voltage from the comparator, allowing elimination of asymmetry that reduces a jitter occurred in molding an optical disc.
REFERENCES:
patent: 5535187 (1996-07-01), Melas et al.
patent: 5802032 (1998-09-01), Jacobs et al.
patent: 5848045 (1998-12-01), Kirino et al.
Huber Paul W.
LG Electronics Inc.
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