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:
Mar. 30, 1999
Filed:
Oct. 31, 1997
Je-kook Kim, Seoul, KR;
Samsung Electronics, Co., Ltd., Suwon, KR;
Abstract
A frequency detector in a phase locked loop which generates a clock signal for reproducing a signal from a optical disc. 3 T information corresponding to an upper limit of the frequency of the Eight-to-Fourteen Modulation signal is compared with the oscillation clock of the VCO divided by three to reduce the oscillation frequency of the VCO. Additionally, 11 T information corresponding to a lower limit of the frequency of the Eight-to-Fourteen Modulation signal is compared with the oscillation clock of the VCO divided by eleven to increase the oscillation frequency of the VCO thereby providing a VCO which oscillates at a frequency corresponding to the frequency of the Eight-to-Fourteen Modulation signal.