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:
Aug. 02, 2011
Filed:
Feb. 25, 2008
An-sik Jeong, Hwaseong-si, KR;
Joon Jeong, Suwon-si, KR;
Joong-gon Kim, Govang-si, KR;
Hyun-seok Yang, Seoul, KR;
Chong-sam Chung, Hwaseong-si, KR;
Noh-cheol Park, Seoul, KR;
Kyung-geun Lee, Seongnam-si, KR;
Jin-kyung Lee, Suwon-si, KR;
Jong-hyun Shin, Suwon-si, KR;
An-sik Jeong, Hwaseong-si, KR;
Joon Jeong, Suwon-si, KR;
Joong-gon Kim, Govang-si, KR;
Hyun-seok Yang, Seoul, KR;
Chong-sam Chung, Hwaseong-si, KR;
Noh-cheol Park, Seoul, KR;
Kyung-geun Lee, Seongnam-si, KR;
Jin-kyung Lee, Suwon-si, KR;
Jong-hyun Shin, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Industry-Academic Foundation Yonsei University, Seoul, KR;
Abstract
An optical disc apparatus, and a method of driving the same, includes a light focusing element disposed to focus light emitted from a light source onto a disc; an actuator to move the light focusing element toward or away from the disc according to a voltage applied to the actuator; a light intensity detection unit to detect the intensity of light reflected from the disc; a servo unit to generate a gap error signal and a third voltage, the third voltage being the sum of a first voltage and a second voltage, and to apply the generated third voltage to the actuator; and a control unit to control the servo unit to perform a gap pull-in operation when the light focusing element is moved toward the disc according to the gap error signal and the third voltage.