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:
Oct. 03, 2006
Filed:
Sep. 03, 2002
Moon-noh Lee, Gyeonggi-do, KR;
Won Kim, Gyeonggi-do, KR;
Gwang-ho Lee, Gyeonggi-do, KR;
Sung-ro Go, Gyeonggi-do, KR;
Hong-rok Kim, Gyeonggi-do, KR;
Il-hong Suh, Seoul, KR;
Wan-kyun Chung, Gyeongsangbuk-do, KR;
Young-jin Choi, Gyeongsangbuk-do, KR;
Moon-noh Lee, Gyeonggi-do, KR;
Won Kim, Gyeonggi-do, KR;
Gwang-ho Lee, Gyeonggi-do, KR;
Sung-ro Go, Gyeonggi-do, KR;
Hong-rok Kim, Gyeonggi-do, KR;
Il-hong Suh, Seoul, KR;
Wan-kyun Chung, Gyeongsangbuk-do, KR;
Young-jin Choi, Gyeongsangbuk-do, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An apparatus to remove periodic disturbances in a recording medium having large eccentricity and deflection mass includes an actuator to change a position of a pickup in response to a combination of first and second compensation signals, an error detector to detect an error between positions actuator and the recording medium, a first compensator to receive the detected error and to output the first compensation signal that the actuator uses to actuate the pickup along the recording medium in upper and lower directions, and right and left directions; and a second compensator to output the second compensation signal from which the disturbance has been removed, to combine the compensated error and previous first and second compensation signals, and to filter the combined result at a predetermined bandwidth.