公开(公告)号：US07283440B2

公开(公告)日：2007-10-16

申请号：US10073061

申请日：2002-02-12

Applicant: Kun-soo Kim ,  In-wook Hwang ,  Pyong-yong Seong

Inventor： Kun-soo Kim ,  In-wook Hwang ,  Pyong-yong Seong

IPC: G11B7/00

CPC classification number: G11B7/1353 ,  G11B7/0903 ,  G11B7/0943 ,  G11B7/1275 ,  G11B7/131 ,  G11B2007/0006

Abstract: An optical recording/reproducing apparatus includes an optical pickup and a signal processor. The optical pickup includes an optical splitting device which splits light emitted from a first light source into a main light beam and sub-light beams which are symmetrical with respect to the main light beam and irradiates the split light beams on a recording medium, and a light detection device which receives the main light beam and the sub-light beams reflected by the recording medium, so as to detect a tracking error signal in a three-beam method and one of a push-pull method and an improved push-pull method. The signal processor receives the detection signals output by the light detection device and detects the tracking error signal in the three-beam method and one of the push-pull method and the improved push-pull method, and otherwise selectively detects the tracking error signal in one of the three-beam method, the push-pull method and the improved push-pull method, so as to realize an optimal tracking servo-control. Since a selective use of one of the improved push-pull method, the push-pull method and the three-beam method can be made according to the type of an optical disc, the optimal tracking servo-control can be realized regardless of the depth of a pit in an optical disc during a reproduction of data from the optical disc, such as a non-rewritable optical disc.

Abstract translation: 光学记录/再现装置包括光学拾取器和信号处理器。 光拾取器包括将从第一光源发射的光分成主光束的光分束装置和相对于主光束对称的子光束，并将分束光束照射在记录介质上， 光检测装置，其接收主光束和由记录介质反射的子光束，以便以三光束方式检测跟踪误差信号，并且推挽方法和改进的推挽方法之一 。 信号处理器接收由光检测装置输出的检测信号，并以三光束方式检测跟踪误差信号以及推挽方法和改进的推挽方法之一，否则选择性地检测跟踪误差信号 三波束法，推挽法和推挽法改进，实现了最优跟踪伺服控制。 由于可以选择性地使用改进的推挽方法之一，可以根据光盘的类型进行推挽方式和三光束方式，可以实现最佳的跟踪伺服控制，而与深度无关 在从诸如不可重写光盘的光盘再现数据期间光盘中的凹坑。

公开(公告)号：US06282161B1

公开(公告)日：2001-08-28

申请号：US09369127

申请日：1999-08-05

Applicant: Yong-ki Son ,  Pyong-yong Seong ,  Byung-ryul Ryoo ,  Seok-jung Kim ,  Joong-eon Seo ,  In-wook Hwang ,  Young-sun Seo

Inventor： Yong-ki Son ,  Pyong-yong Seong ,  Byung-ryul Ryoo ,  Seok-jung Kim ,  Joong-eon Seo ,  In-wook Hwang ,  Young-sun Seo

IPC: G11B390

CPC classification number: G11B7/0956

Abstract: An optical recording and reproducing apparatus for adjusting a tilt of an optical pickup in accordance with an amount of jitter of a reproduction signal, a tilt adjusting method therefor, and a recording control method. The optical recording and reproducing apparatus includes an optical pickup having an object lens, a tilt adjusting unit for adjusting a tilt angle of the object lens, a jitter detecting unit for detecting an amount of jitter of a reproducing signal generated by the optical pickup from a disk, and a tilt controlling unit for minimizing the amount of jitter by feeding the amount of jitter detected by the jitter detecting unit back to the tilt adjusting unit. According to the optical recording and reproducing apparatus, there is no need for a space in which a displacement sensor detecting the tilt angle of the optical pickup faces the disk.

Abstract translation: 一种用于根据再现信号的抖动量，其倾斜调整方法和记录控制方法来调整光学拾取器的倾斜的光学记录和再现装置。 光学记录和再现装置包括具有物镜的光学拾取器，用于调节物镜的倾斜角度的倾斜调节单元，用于检测由光学拾取器产生的再现信号的抖动量的抖动检测单元， 盘和倾斜控制单元，用于通过将由抖动检测单元检测到的抖动量馈送回倾斜调节单元来最小化抖动量。 根据光学记录和再现装置，不需要用于检测光学拾取器的倾斜角度的位移传感器面对盘的空间。