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:
Apr. 07, 1998
Filed:
Jun. 28, 1996
Soo Young Lee, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A method for deciding recording density of an optical disc easily decides and searches the kind and data recording status of a disc when reproducing a general CD and a high density CD. The method is performed by a recording step of recording classification of the general disc and the high density disc, and identification and recording density status of respective layers of the high density CD onto both a zero area of a lead-in region and a zero area of a Q channel of a subcode, and a reproducing step in which the zero area of the lead-in region is read out to decide the recording density status and positional information with respect to respective musics, and the linear velocity of the spindle motor, tracking servo and focusing servo are controlled with respect to the decided respective musics. Thus, it is easy to search the music while accurately controlling the spindle motor, focusing servo and tracking servo according to the recording density.