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    • 48. 发明公开
    • Method for setting laser power in optical disc drive
    • 在光盘驱动器中设置激光功率的方法
    • EP1705658A2
    • 2006-09-27
    • EP06005961.5
    • 2006-03-23
    • Hitachi-LG Data Storage Korea Inc.
    • No, Sang Chul
    • G11B23/40G11B7/125
    • G11B7/0037G11B7/0908G11B19/12G11B23/40G11B23/42
    • A method for setting a laser power of an optical disc drive is provided. To perform a label-printing operation on a label surface of an optical disc, an optical pickup unit is shifted to a control feature zone of the label surface, and a laser power operation is performed prior to initiating label printing using power setup data and sensitivity related to an internal laser diode sensor of the optical pickup unit detected during manufacture of the optical disc drive. Alternatively, power setup data associated both a data surface and a label surface of the optical disc may be detected and stored during manufacture of the optical disc drive, and a laser power of predetermined magnitude may determined based on the power setup data previously stored in association with the seated surface of the optical disc. The power setup data may be represented by a substantially linear equation relating the input voltage to the output laser power. Therefore, an optimum laser power for a label surface may be determined prior to actually printing an image on the label surface, thus minimizing error associated with the output laser power, and enhancing label-printing quality.
    • 提供了一种用于设置光盘驱动器的激光功率的方法。 为了在光盘的标签表面上执行标签打印操作,将光学拾取单元移动到标签表面的控制特征区域,并且在使用功率设置数据和灵敏度启动标签打印之前执行激光功率操作 涉及在制造光盘驱动器期间检测到的光学拾取单元的内部激光二极管传感器。 或者,可以在光盘驱动器的制造期间检测并存储与光盘的数据表面和标签表面相关联的功率设置数据,并且可以基于先前存储在关联中的功率设置数据来确定预定幅度的激光功率 与光盘的就座表面。 功率设置数据可以由将输入电压与输出激光功率相关的基本线性方程表示。 因此,可以在实际在标签表面上打印图像之前确定用于标签表面的最佳激光功率,从而最小化与输出激光功率相关联的误差,并且提高标签打印质量。
    • 49. 发明公开
    • Method for performing servo control for blank discs
    • Verfahren zurDurchführungeiner Nachlaufregelung von Rohlingen
    • EP1657714A2
    • 2006-05-17
    • EP05024923.4
    • 2005-11-15
    • Hitachi-LG Data Storage Korea Inc.
    • Kim, Joung Woo
    • G11B7/085G11B7/0037G11B7/26
    • G11B7/1267G11B7/0945
    • A servo control method for blank discs is provided. When an optical disc is loaded, servo control suitable for the type of the loaded disc is performed. When the optical disc is a blank disc, data of a specific size is recorded in a predetermined area of the optical disc and servo control is performed again based on a playback characteristic (for example, a playback RF signal level) of the recorded data. Thus, fine servo control is performed for the blank disc based on the playback RF signal so that an accurate and stable servo operation is achieved and thus an optimal recording power can be detected, thereby improving the recording quality of the optical disc.
    • 提供了一种用于空白盘的伺服控制方法。 当加载光盘时,执行适合于加载盘类型的伺服控制。 当光盘是空白盘时,将特定尺寸的数据记录在光盘的预定区域中,并且基于记录数据的重放特性(例如,重放RF信号电平)再次执行伺服控制。 因此,基于重放RF信号对空白盘执行精细伺服控制,从而实现精确和稳定的伺服操作,从而可以检测最佳记录功率,从而提高光盘的记录质量。
    • 50. 发明公开
    • Apparatus and method for driving a laser diode used for recording data on optical disk
    • 装置和方法,用于控制激光二极管用于记录数据的光盘上
    • EP1434204A2
    • 2004-06-30
    • EP03029704.8
    • 2003-12-23
    • Hitachi-LG Data Storage Korea Inc.
    • Han, Cheul Kyung
    • G11B7/0045G11B7/125
    • G11B7/1267G11B7/00456
    • An apparatus and method for driving a laser diode for a recording of data. According to the method, pre-stored variables corresponding to respective manufacturers and respective recording pits of the optical disk are checked. A main pulse based on the checked variables and a sub pulse having a prescribed width are generated. The sub pulse is generated at a prescribed time prior to generating the main pulse. A driving signal for driving a LD to record data is generated upon receiving the main pulse and the sub pulse. Therefore, data recording operations are performed using the driving signal without overpower as in the conventional Mode 1 (e.g., Orange 1), that can take less computation and less time to form recording pits at a desired time/size for a recording period of time as in the conventional Mode 2 (e.g., Orange 2), which can result in improve recording quality (Fig. 5).
    • 用于驱动激光二极管,用于数据的记录的装置和方法。 。根据该方法,预先存储的变量对应于respectivement制造商和光盘的各个记录凹坑被检查。 生成基于所检查变量和具有规定宽度的子脉冲A主脉冲。 子脉冲在之前生成所述主脉冲在规定时间产生。 用于驱动LD以记录数据的驱动信号在接收到所述主脉冲和子脉冲被生成。 因此,数据记录操作是使用驱动信号在传统模式1中进行无过电力(例如,橙1)也可以采用较少的计算和更短的时间,以形成记录在期望的时间/尺寸的凹坑的时间记录周期 如在常规模式2(例如,橙2),其可以导致提高记录质量(图5)。