公开(公告)号：US20060077806A1

公开(公告)日：2006-04-13

申请号：US11289468

申请日：2005-11-30

Applicant: Jin-Chuan Hsu ,  Ching-Ning Chiu

Inventor： Jin-Chuan Hsu ,  Ching-Ning Chiu

IPC: G11B7/00

CPC classification number: G11B7/0945 ,  G11B7/0908

Abstract: The present invention provides a method for calibrating focus positions of a pickup head. The pickup head is in a focus position of a predetermined distance from an optical recording medium for producing a recording light beam of a predetermined power for recording corresponding data onto the optical recording medium. A predetermined position adjustment procedure is performed to adjust the focus position of the pickup head during data recording. The procedure comprises the steps of sensing a reflected light beam from the optical recording medium by means of a sensor to generate a corresponding write RF signal; searching an extreme value of the write RF signal and obtain a target focus position corresponding to the searched extreme value; and adjusting the pickup head to the target focus position, so as to enable further data recording onto the optical recording medium by the pickup head in the target focus position.

Abstract translation: 本发明提供一种用于校准拾取头的对焦位置的方法。 拾取头处于与用于产生用于将相应数据记录到光学记录介质上的预定功率的记录光束的光学记录介质预定距离的聚焦位置。 执行预定位置调整程序以在数据记录期间调节拾取头的对焦位置。 该过程包括以下步骤：通过传感器感测来自光学记录介质的反射光束，以产生对应的写入RF信号; 搜索写RF信号的极值，并获得与所搜索的极值对应的目标对焦位置; 并且将拾取头调整到目标对焦位置，以便能够通过目标对焦位置中的拾取头进一步将数据记录到光学记录介质上。

公开(公告)号：US20060203631A1

公开(公告)日：2006-09-14

申请号：US11077668

申请日：2005-03-11

Applicant: Gwo-Huei Wu ,  Yuh Cheng ,  Chao-Ming Huang ,  Chih-Yuan Chen ,  Ching-Ning Chiu

Inventor： Gwo-Huei Wu ,  Yuh Cheng ,  Chao-Ming Huang ,  Chih-Yuan Chen ,  Ching-Ning Chiu

IPC: G11B7/00

CPC classification number: G11B7/0903 ,  G11B7/0053 ,  G11B7/00718

Abstract: A detector is scanned across an optical storage medium having groove tracks and land tracks, each track having a wobble structure, to detect light reflected from the optical storage medium. A wobble signal and a tracking error signal are generated based on an output of the detector, and the wobble signal is sampled according to the tracking error signal. A determination about whether the detector is at the groove track or the land track is made based on the tracking error signal and a comparison of sampled values of the wobble signal.

Abstract translation: 检测器跨越具有凹槽轨道和脊迹道的光学存储介质扫描，每个轨道具有摆动结构，以检测从光学存储介质反射的光。 基于检测器的输出产生摆动信号和跟踪误差信号，并且根据跟踪误差信号对摆动信号进行采样。 基于跟踪误差信号和摆动信号的采样值的比较来确定检测器是否位于凹槽轨道或脊迹道。

公开(公告)号：US20060109756A1

公开(公告)日：2006-05-25

申请号：US10995053

申请日：2004-11-22

Applicant: Chih-Yuan Chen ,  Jin-Bin Yang ,  Ching-Ning Chiu

Inventor： Chih-Yuan Chen ,  Jin-Bin Yang ,  Ching-Ning Chiu

IPC: G11B7/00 ,  G11B5/09

CPC classification number: G11B20/1217 ,  G11B7/0053 ,  G11B7/24082 ,  G11B19/28 ,  G11B2020/1239 ,  G11B2020/1247 ,  G11B2020/1248

Abstract: A light beam is scanned on a track of a recording medium, the track having a first track region and a second track region, each track region having a physical property that has recurring deviations. A wobble signal is derived from the light beam, the wobble signal having information associated with the recurring deviations. Whether the light beam is at the first track region or the second track region is determined based on a frequency, a period, or a pulse width of the wobble signal.

Abstract translation: 在记录介质的轨道上扫描光束，轨道具有第一轨道区域和第二轨道区域，每个轨道区域具有重复偏差的物理特性。 从光束导出摆动信号，摆动信号具有与重复偏差相关联的信息。 基于摆动信号的频率，周期或脉冲宽度来确定光束是处于第一轨迹区域还是第二轨迹区域。

公开(公告)号：US20060087952A1

公开(公告)日：2006-04-27

申请号：US10969972

申请日：2004-10-22

Applicant: Ching-Ning Chiu ,  Chih-Yuan Chen ,  Jin-Chuan Hsu

Inventor： Ching-Ning Chiu ,  Chih-Yuan Chen ,  Jin-Chuan Hsu

IPC: G11B7/00

CPC classification number: G11B7/1263

Abstract: This invention provides a laser power control system to control the power of the emitted laser from an optical pick-up head. The system comprises a temperature sensor and a calculating unit. The temperature sensor is used to detect the temperature of the optical pick-up head and to generate a temperature signal accordingly. The calculating unit, storing a control relation of the optical pick-up head, is used to receive the temperature signal. According to the control relation, the calculating unit calculates and outputs a power control signal under the temperature signal and the setting power. The power control signal, converted from digital into analog by a digital to analog converter, is transmitted to the optical pick-up head, so as to control the optical pick-up head to emit the laser according to the setting power.

Abstract translation: 本发明提供了一种激光功率控制系统，用于控制来自光学拾取头的发射激光的功率。 该系统包括温度传感器和计算单元。 温度传感器用于检测光学拾取头的温度并相应地产生温度信号。 存储光拾取头的控制关系的计算单元用于接收温度信号。 根据控制关系，计算单元计算并输出温度信号和设定功率下的功率控制信号。 通过数模转换器从数字转换为模拟的功率控制信号被传送到光学拾取头，以便根据设定功率控制光学拾取头发射激光。