公开(公告)号：US06686697B2

公开(公告)日：2004-02-03

申请号：US10281233

申请日：2002-10-28

Applicant: Myoung-cheol Cho ,  Byung-ryul Ryoo ,  Kyung-ui Park ,  Ui-yol Kim ,  Pyong yong Seong

Inventor： Myoung-cheol Cho ,  Byung-ryul Ryoo ,  Kyung-ui Park ,  Ui-yol Kim ,  Pyong yong Seong

IPC: H05B4136

CPC classification number: H05B33/089 ,  Y02B20/341

Abstract: A circuit protects a light element and prevents a breakdown of a laser diode (LD) when electric static discharge (ESD) occurs. The circuit protects the light element in a drive to control an operation of the light element, which radiates light onto a disc. Here, the drive includes a switch between an active node of the light element and a predetermined potential so that the switch is short-circuited in a normal state, but is open when the drive operates. The light element is protected from static electricity or a surge voltage in a manufacturing process thereof or under a user environment. As a result, the probability that the light element is broken down is remarkably reduced.

Abstract translation: 电路保护光元件并防止当发生静电放电（ESD）时激光二极管（LD）的击穿。 电路保护驱动器中的光元件以控制将光照射到盘上的光元件的操作。 这里，驱动器包括在光元件的主动节点和预定电位之间的开关，使得开关在正常状态下短路，但是当驱动器工作时打开。 光元件在其制造过程中或在用户环境下被保护免受静电或浪涌电压的影响。 结果，光元件分解的概率显着降低。

公开(公告)号：US07355953B2

公开(公告)日：2008-04-08

申请号：US10686785

申请日：2003-10-17

Applicant: Ui-yol Kim ,  Byung-ryul Ryoo ,  Pyong-yong Seong ,  Myoung-cheol Cho ,  Kyung-ui Park

Inventor： Ui-yol Kim ,  Byung-ryul Ryoo ,  Pyong-yong Seong ,  Myoung-cheol Cho ,  Kyung-ui Park

IPC: G11B7/125

CPC classification number: G11B7/1395 ,  G11B7/1263 ,  G11B7/1353 ,  G11B2007/13727

Abstract: An optical pickup includes a light source which emits light, a grating which separates a portion of the light emitted from the light source, a reflecting member which reflects another portion of the light emitted from the light source, a monitoring photodetector disposed on a traveling path of the light reflected from the reflecting member and which measures the reflected light, an optical path changer which changes an optical path of the light separated by the grating, an objective lens light which condenses the light the optical path of which is changed onto a disc, and a signal detecting photodetector which receives the light reflected from the disc.

Abstract translation: 光拾取器包括发光的光源，分离从光源发出的光的一部分的光栅，反射从光源发射的光的另一部分的反射部件，设置在行进路径上的监视光电检测器 从反射构件反射并测量反射光的光，改变由光栅分离的光的光路的光路改变器，将其光路改变为光盘的光会聚的物镜光 以及接收从盘反射的光的信号检测光电检测器。

公开(公告)号：US07486596B2

公开(公告)日：2009-02-03

申请号：US11089535

申请日：2005-03-25

Applicant: Byung-youn Song ,  Jong-koog Lee ,  Dong-ryeol Lee ,  Pyong-yong Seong ,  Kyung-ui Park ,  Dong-won Kim

Inventor： Byung-youn Song ,  Jong-koog Lee ,  Dong-ryeol Lee ,  Pyong-yong Seong ,  Kyung-ui Park ,  Dong-won Kim

IPC: G11B7/00

CPC classification number: G11B7/0956

Abstract: A method and apparatus for compensating tilt. The tilt compensation method includes: obtaining one of a jitter best, an RF envelope, and a focus DC offset (FODC) from a detection signal of the ROM data region and determining whether the obtained value is within a tolerance range; and obtaining an initial skew compensation value using the obtained value when the obtained value is within the tolerance, changing the magnitude of current applied to an actuator designed to perform driving in at least three-axis directions to drive an objective lens of an optical pickup assembly in a radial tilt direction when the obtained value is not within the tolerance range, and repeating the obtaining of one of the jitter best, the RF envelope, and the FODC and changing the magnitude of the current until the obtained value is within the tolerance range.

Abstract translation: 一种用于补偿倾斜的方法和装置。 倾斜补偿方法包括：从ROM数据区域的检测信号中获得最佳抖动，RF包络和聚焦DC偏移（FODC）中的一个，并确定所获得的值是否在公差范围内; 以及当所获得的值在公差内时，使用所获得的值获得初始偏移补偿值，改变施加到设计成在至少三个轴方向上执行驱动的致动器的电流的大小，以驱动光学拾取组件的物镜 当获得的值不在公差范围内时，在径向倾斜方向上，并且重复获得最佳抖动之一，RF包络和FODC，并且改变电流的幅度直到所获得的值在公差范围内 。

公开(公告)号：US20050249077A1

公开(公告)日：2005-11-10

申请号：US11089535

申请日：2005-03-25

Applicant: Byung-youn Song ,  Jong-koog Lee ,  Dong-ryeol Lee ,  Pyong-yong Seong ,  Kyung-ui Park ,  Dong-won Kim

Inventor： Byung-youn Song ,  Jong-koog Lee ,  Dong-ryeol Lee ,  Pyong-yong Seong ,  Kyung-ui Park ,  Dong-won Kim

IPC: G11B7/004 ,  G11B7/00 ,  G11B7/007 ,  G11B7/085 ,  G11B7/09 ,  G11B7/095

CPC classification number: G11B7/0956

Abstract: A method and apparatus for compensating tilt. The tilt compensation method includes: obtaining one of a jitter best, an RF envelope, and a focus DC offset (FODC) from a detection signal of the ROM data region and determining whether the obtained value is within a tolerance range; and obtaining an initial skew compensation value using the obtained value when the obtained value is within the tolerance, changing the magnitude of current applied to an actuator designed to perform driving in at least three-axis directions to drive an objective lens of an optical pickup assembly in a radial tilt direction when the obtained value is not within the tolerance range, and repeating the obtaining of one of the jitter best, the RF envelope, and the FODC and changing the magnitude of the current until the obtained value is within the tolerance range.

Abstract translation: 一种用于补偿倾斜的方法和装置。 倾斜补偿方法包括：从ROM数据区域的检测信号中获得最佳抖动，RF包络和聚焦DC偏移（FODC）中的一个，并确定所获得的值是否在公差范围内; 以及当所获得的值在公差内时，使用所获得的值获得初始偏移补偿值，改变施加到设计成在至少三个轴方向上执行驱动的致动器的电流的大小，以驱动光学拾取组件的物镜 当获得的值不在公差范围内时，在径向倾斜方向上，并且重复获得最佳抖动之一，RF包络和FODC，并且改变电流的幅度直到获得的值在容许范围内 。