公开(公告)号：US07263113B2

公开(公告)日：2007-08-28

申请号：US10710970

申请日：2004-08-15

Applicant: Yung-Chih Li ,  Hsueh-Kun Liao ,  Ching-Chuan Hsu

Inventor： Yung-Chih Li ,  Hsueh-Kun Liao ,  Ching-Chuan Hsu

IPC: H01S3/13 ,  H01S3/00

CPC classification number: H01S5/0683 ,  G11B7/1263 ,  H01S5/042

Abstract: A laser power controller for performing an auto power control to control the laser power of an optical pick-up unit (OPU) includes: a sample/hold circuit used for sampling and holding a front photodiode output signal to generate an analog feedback signal; an analog-to-digital converter (ADC) electrically coupled to the sample/hold circuit for transferring the analog feedback signal into a digital feedback signal; and a digital control circuit electrically coupled to the ADC for generating a power control signal and outputting the power control signal to the OPU in order to control the laser power of the OPU. The front photodiode output signal corresponds to the laser power of the OPU.

Abstract translation: 一种用于执行自动功率控制以控制光学拾取单元（OPU）的激光功率的激光功率控制器包括：采样/保持电路，用于采样并保持前光电二极管输出信号以产生模拟反馈信号; 电耦合到采样/保持电路的模拟 - 数字转换器（ADC），用于将模拟反馈信号传送到数字反馈信号; 以及电耦合到ADC的数字控制电路，用于产生功率控制信号，并将功率控制信号输出到OPU以便控制OPU的激光功率。 前光电二极管输出信号对应于OPU的激光功率。

公开(公告)号：US20050281300A1

公开(公告)日：2005-12-22

申请号：US10710970

申请日：2004-08-15

Applicant: Yung-Chih Li ,  Hsueh-Kun Liao ,  Ching-Chuan Hsu

Inventor： Yung-Chih Li ,  Hsueh-Kun Liao ,  Ching-Chuan Hsu

IPC: G11B7/125 ,  H01S3/00 ,  H01S5/042 ,  H01S5/0683

CPC classification number: H01S5/0683 ,  G11B7/1263 ,  H01S5/042

Abstract: A laser power controller for performing an auto power control to control the laser power of an optical pick-up unit (OPU) includes: a sample/hold circuit used for sampling and holding a front photodiode output signal to generate an analog feedback signal; an analog-to-digital converter (ADC) electrically coupled to the sample/hold circuit for transferring the analog feedback signal into a digital feedback signal; and a digital control circuit electrically coupled to the ADC for generating a power control signal and outputting the power control signal to the OPU in order to control the laser power of the OPU. The front photodiode output signal corresponds to the laser power of the OPU.

Abstract translation: 一种用于执行自动功率控制以控制光学拾取单元（OPU）的激光功率的激光功率控制器包括：采样/保持电路，用于采样和保持前光电二极管输出信号以产生模拟反馈信号; 电耦合到采样/保持电路的模拟 - 数字转换器（ADC），用于将模拟反馈信号传送到数字反馈信号; 以及电耦合到ADC的数字控制电路，用于产生功率控制信号，并将功率控制信号输出到OPU以便控制OPU的激光功率。 前光电二极管输出信号对应于OPU的激光功率。

公开(公告)号：US07457332B2

公开(公告)日：2008-11-25

申请号：US11759947

申请日：2007-06-08

Applicant: Yung-Chih Li ,  Hsueh-Kun Liao ,  Ching-Chuan Hsu

Inventor： Yung-Chih Li ,  Hsueh-Kun Liao ,  Ching-Chuan Hsu

IPC: H01S3/13 ,  H01S3/00

CPC classification number: H01S5/0683 ,  G11B7/1263 ,  H01S5/042

Abstract: A laser power control unit used for controlling the laser power of an optical pick-up unit (OPU) is provided. The laser power control unit includes: at least one analog-to-digital converter (ADC) electrically coupled to the OPU for transferring a front photodiode output signal into a digital feedback signal; and at least one digital control circuit electrically coupled to the ADC for generating a power control signal and outputting the power control signal to the OPU in order to control the laser power of the OPU. The digital control circuit has a compensation circuit used for generating a compensation value according to a difference between the digital feedback signal and a digital target feedback signal so as to adjust the power control signal. The front photodiode output signal corresponds to the laser power of the OPU.

Abstract translation: 提供了用于控制光学拾取单元（OPU）的激光功率的激光功率控制单元。 激光功率控制单元包括：电耦合到OPU的至少一个模数转换器（ADC），用于将前光电二极管输出信号转换成数字反馈信号; 以及电耦合到ADC的至少一个数字控制电路，用于产生功率控制信号，并将功率控制信号输出到OPU以便控制OPU的激光功率。 数字控制电路具有补偿电路，用于根据数字反馈信号和数字目标反馈信号之间的差产生补偿值，以便调整功率控制信号。 前光电二极管输出信号对应于OPU的激光功率。

公开(公告)号：US20070230524A1

公开(公告)日：2007-10-04

申请号：US11759947

申请日：2007-06-08

Applicant: Yung-Chih LI ,  Hsueh-Kun LIAO ,  Ching-Chuan Hsu

Inventor： Yung-Chih LI ,  Hsueh-Kun LIAO ,  Ching-Chuan Hsu

IPC: H01S3/00

CPC classification number: H01S5/0683 ,  G11B7/1263 ,  H01S5/042

Abstract: A laser power control unit used for controlling the laser power of an optical pick-up unit (OPU) is provided. The laser power control unit includes: at least one analog-to-digital converter (ADC) electrically coupled to the OPU for transferring a front photodiode output signal into a digital feedback signal; and at least one digital control circuit electrically coupled to the ADC for generating a power control signal and outputting the power control signal to the OPU in order to control the laser power of the OPU. The digital control circuit has a compensation circuit used for generating a compensation value according to a difference between the digital feedback signal and a digital target feedback signal so as to adjust the power control signal. The front photodiode output signal corresponds to the laser power of the OPU.

Abstract translation: 提供了用于控制光学拾取单元（OPU）的激光功率的激光功率控制单元。 激光功率控制单元包括：电耦合到OPU的至少一个模数转换器（ADC），用于将前光电二极管输出信号转换成数字反馈信号; 以及电耦合到ADC的至少一个数字控制电路，用于产生功率控制信号，并将功率控制信号输出到OPU以便控制OPU的激光功率。 数字控制电路具有补偿电路，用于根据数字反馈信号和数字目标反馈信号之间的差产生补偿值，以便调整功率控制信号。 前光电二极管输出信号对应于OPU的激光功率。

公开(公告)号：US20120293473A1

公开(公告)日：2012-11-22

申请号：US13169063

申请日：2011-06-27

Applicant: Tzung-Yuan Lee ,  Ching-Chuan Hsu ,  Chun-Yi Chou

Inventor： Tzung-Yuan Lee ,  Ching-Chuan Hsu ,  Chun-Yi Chou

IPC: G09G5/00

CPC classification number: G09G5/00 ,  G09G2320/0626 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2360/144

Abstract: A display apparatus is disclosed. The display apparatus includes an environment luminance detector, a display image data analyser, and an image compensation processor. The environment luminance detector detects an environment luminance and generates an environment luminance grade according to the environment luminance. The display image data analyser receives display image data and analyses a luminance of the display image data to generate a display image data luminance grade. The image compensation processor generates an image luminance enhancement value, an image color compensating value and an image edge enhancement value. The image compensation processor compensates the display image data to generate compensated image data according to the image luminance enhancement value, the image color compensating value and the image edge enhancement value.

Abstract translation: 公开了一种显示装置。 显示装置包括环境亮度检测器，显示图像数据分析器和图像补偿处理器。 环境亮度检测器检测环境亮度，并根据环境亮度产生环境亮度等级。 显示图像数据分析器接收显示图像数据并分析显示图像数据的亮度以生成显示图像数据亮度等级。 图像补偿处理器生成图像亮度增强值，图像颜色补偿值和图像边缘增强值。 图像补偿处理器根据图像亮度增强值，图像颜色补偿值和图像边缘增强值来补偿显示图像数据以生成补偿图像数据。

公开(公告)号：US20060077801A1

公开(公告)日：2006-04-13

申请号：US11162408

申请日：2005-09-09

Applicant: Yi-Chen Tseng ,  Ching-Chuan Hsu ,  Shun-Yung Wang

Inventor： Yi-Chen Tseng ,  Ching-Chuan Hsu ,  Shun-Yung Wang

IPC: G11B7/00

CPC classification number: G11B7/0941

Abstract: A method for tracking and focusing enhancement of disk drives and related devices. The method performs feedforward compensation for an output signal generated by a feedback compensator of a disk drive. The output signal is utilized for controlling a tracking position or a focusing position of a read/write module of the disk drive. The method includes obtaining the output signal, within which a dominant signal is a periodic wave corresponding to a tracking error or a focusing error of the disk drive, identifying a waveform of the dominant signal, generating a correction signal according to the waveform of the dominant signal, and superposing the correction signal on the output signal to correct the dominant signal.

Abstract translation: 用于跟踪和聚焦磁盘驱动器和相关设备的增强的方法。 该方法对由盘驱动器的反馈补偿器产生的输出信号执行前馈补偿。 输出信号用于控制磁盘驱动器的读/写模块的跟踪位置或聚焦位置。 该方法包括获得输出信号，其中主要信号是对应于磁盘驱动器的跟踪误差或聚焦误差的周期波，识别主导信号的波形，根据主导波形产生校正信号 信号，并将校正信号叠加在输出信号上，以校正主导信号。