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:
Jun. 08, 2004
Filed:
Jul. 07, 2000
Hyung Jin Jeon, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
The present invention relates to an apparatus and method for detecting non-recording regions of an optical recording medium for recording data or reproducing the recorded data by detecting header regions of the optical recording medium. For this purpose, in the apparatus for detecting non-recording regions of the optical recording medium having a plurality of header regions of different phases arranged between writable data regions in which the information capable of recognizing a reference frequency is wobbled on tracks, in order to distinguish the data regions by their shapes, the apparatus for detecting non-recording regions of the optical recording medium in accordance with the present invention includes a header region detection unit for detecting the plurality of header regions, a header region verification unit for verifying the detected header regions and outputting verified signals, a wobble-PLL unit for outputting PLL-wobble signals by phase locking upon receipt of wobble signals recorded on the tracks of the optical recording medium, and a counter for outputting header mask signals by counting the number of output pulses of the wobble-PLL unit upon receipt of the PLL-wobble signals on the basis of the verified signals.