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. 10, 2007
Filed:
Apr. 22, 2003
Jong-ryull Kim, Gyeonggi-do, KR;
Pyong-yong Seong, Seoul, KR;
No-jun Kwak, Gyeonggi-do, KR;
Chul-ho Jeon, Gyeonggi-do, KR;
Ki-bong Yun, Gyeonggi-do, KR;
Bong-hwoan Choi, Gyeonggi-do, KR;
Jong-ryull Kim, Gyeonggi-do, KR;
Pyong-yong Seong, Seoul, KR;
No-jun Kwak, Gyeonggi-do, KR;
Chul-ho Jeon, Gyeonggi-do, KR;
Ki-bong Yun, Gyeonggi-do, KR;
Bong-hwoan Choi, Gyeonggi-do, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
A method and an apparatus for identifying the type of an optical recording medium are provided. The method includes detecting a surface reflected signal Sand a writable-surface reflected signal Sof an optical recording medium while performing a focus search using a first optical system, counting a time difference DTbetween a high peak and a low peak of the surface reflected signal S, counting a time difference DTbetween the high peak of the surface reflected signal and a high peak of the writable-surface reflected signal S, obtaining DT by substituting DTand DTinto the following equation: and comparing DT with a reference time T, and driving the first optical system if DT is greater than T and driving a second optical system if DT is not greater than T.