The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 2000
Filed:
Jun. 04, 1998
Seon Gyoung Kim, Kyungki-do, KR;
LG Electronics Inc., Seoul, KR;
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.