公开(公告)号：US06906986B2

公开(公告)日：2005-06-14

申请号：US10230373

申请日：2002-08-29

申请人： Moon-noh Lee ,  Won Kim ,  Sung-ro Go ,  Dong-jin Lee ,  Hyun-seok Yang ,  Hong-gul Jun

发明人： Moon-noh Lee ,  Won Kim ,  Sung-ro Go ,  Dong-jin Lee ,  Hyun-seok Yang ,  Hong-gul Jun

IPC分类号： G11B7/09 ,  G01H1/00 ,  G11B7/00 ,  G11B7/095 ,  G11B19/02 ,  G11B20/18

CPC分类号： G11B7/0946 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0948 ,  G11B7/0953

摘要： A vibration quantity measuring apparatus and method, and a loop design method in which a vibration quantity generated in a focus and tracking loop is accurately measured to optimally design a focus and tracking loop of an optical disc drive. The vibration quantity measuring apparatus includes an error gain adjusting unit which adjusts an amplitude of a focus and tracking error which occurs where a disc rotates, so as to maintain the amplitude of the focus and tracking error constant, a loop gain adjusting unit which compares a closed loop phase of a focus and tracking loop and a predetermined reference closed loop phase, and maintains a constant gain of the focus and tracking loop to compensate for a gain difference of an actuator, and a measuring unit which calculates and outputs a vibration quantity using an error adjusted by the error gain adjusting unit and the loop gain adjusting unit, and an output of a controller which controls a focus and tracking of the disc. According to the methods and apparatus, a focus and tracking vibration quantity that occur differently depending on the type of a disc, on which data is recorded on or read from, or depending on a speed factor of a disc drive, can be measured.

摘要翻译： 振动量测量装置和方法以及循环设计方法，其中精确地测量在聚焦和跟踪环路中产生的振动量，以最佳地设计光盘驱动器的聚焦和跟踪环路。 振动量测量装置包括：误差增益调整单元，其调整盘旋转时发生的聚焦和跟踪误差的幅度，以保持聚焦和跟踪误差的幅度恒定;环路增益调整单元， 聚焦跟踪环和预定的参考闭环相位的闭环相位，并且保持焦距和跟踪环路的恒定增益以补偿致动器的增益差;以及测量单元，其计算并输出使用 由误差增益调整单元和环路增益调整单元调整的误差以及控制盘的聚焦和跟踪的控制器的输出。 根据方法和装置，可以测量根据盘的类型而不同地产生的聚焦和跟踪振动量，其中数据被记录在其上或从其读取或取决于盘驱动器的速度因子。

公开(公告)号：US07274640B2

公开(公告)日：2007-09-25

申请号：US10229134

申请日：2002-08-28

申请人： Moon-noh Lee ,  Dong-jin Lee ,  Gwang-ho Lee ,  Hyun-seok Yang ,  Hong-gul Jun

发明人： Moon-noh Lee ,  Dong-jin Lee ,  Gwang-ho Lee ,  Hyun-seok Yang ,  Hong-gul Jun

IPC分类号： G11B7/00

CPC分类号： G11B19/12 ,  G11B7/00375 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0945 ,  G11B7/0953 ,  G11B7/0956 ,  G11B19/04

摘要： A disc type determining apparatus in a disc recording and reproducing apparatus in which vibrations generated by rotations of a disc occur in a focus and tracking control actuator includes an error gain adjusting unit, which adjusts an amplitude of a focus and tracking error in order to maintain a constant amplitude of the focus and tracking error; a loop gain adjusting unit which compares the closed loop phase of the focus and tracking control loop and a predetermined reference closed loop phase, and maintains a constant gain of the focus and tracking control loop; a vibration measuring unit which measures vibrations using the adjusted error and the output of a controller; and a disc type determining unit which extracts a predetermined signal to determine the type of a disc using the measured vibrations, measures the deflection, eccentricity, and mass eccentricity of a disc using the extracted signal.

摘要翻译： 在光盘记录和再现装置中的光盘类型确定装置，其中在焦点和跟踪控制致动器中发生的盘的旋转产生的振动包括误差增益调节单元，其调整聚焦的幅度和跟踪误差以便维持 焦距和跟踪误差的恒定幅度; 循环增益调整单元，其比较聚焦和跟踪控制环的闭环相位和预定的参考闭环相位，并且保持聚焦和跟踪控制环路的恒定增益; 振动测量单元，其使用调整后的误差和控制器的输出来测量振动; 以及盘型确定单元，其使用所测量的振动提取预定信号以确定盘的类型，使用所提取的信号测量盘的偏转，偏心率和质量偏心率。