公开(公告)号：US07715303B2

公开(公告)日：2010-05-11

申请号：US11235369

申请日：2005-09-27

Applicant: Hsiang-Ji Hsieh ,  Hsueh-Kun Liao ,  Yu-Kai Chou ,  Yu-Hsin Lin

Inventor： Hsiang-Ji Hsieh ,  Hsueh-Kun Liao ,  Yu-Kai Chou ,  Yu-Hsin Lin

IPC: G11B7/00

CPC classification number: G11B7/13

Abstract: A recording apparatus for optical data includes a photo detection IC for producing a plurality of phase signals; a plurality of sample/hold (S/H) circuits electrically connected to the photo detection IC; a plurality of limiter circuits electrically connected to the photo detection IC; a channel signal generator connected to the S/H circuits; and a level shift circuit connected to an output of the channel signal generator. The recording apparatus for optical data prevents the interference of servo signal during high speed operation and ensures normal operation of S/H circuits thereof.

Abstract translation: 用于光学数据的记录装置包括用于产生多个相位信号的光检测IC; 电连接到光检测IC的多个采样/保持（S / H）电路; 电连接到光检测IC的多个限幅器电路; 连接到S / H电路的信道信号发生器; 以及连接到信道信号发生器的输出的电平移位电路。 用于光学数据的记录装置防止伺服信号在高速操作期间的干扰，并确保其S / H电路的正常工作。

公开(公告)号：US20060188268A1

公开(公告)日：2006-08-24

申请号：US11381539

申请日：2006-05-04

Applicant: Hsueh-Kun Liao ,  Hseang-Ji Hsieh

Inventor： Hsueh-Kun Liao ,  Hseang-Ji Hsieh

IPC: H04B10/04

CPC classification number: G11B7/1263

Abstract: An optical drive includes a comparator for comparing a first input signal with a second input signal to generate a first output signal at a first node; a signal source coupled to a second node, the signal source outputting a second output signal; and a switch for outputting a third output signal at a third node, the third output signal controlling a laser power of the optical drive, wherein when the switch is switched to the first node, the first output signal is transmitted to the third node and serves as the third output signal, and when the switch is switched to the second node, the second output signal is transmitted to the third node and serves as the third output signal.

Abstract translation: 光驱包括比较器，用于比较第一输入信号和第二输入信号，以在第一节点产生第一输出信号; 耦合到第二节点的信号源，所述信号源输出第二输出信号; 以及用于在第三节点输出第三输出信号的开关，所述第三输出信号控制所述光驱动器的激光功率，其中当所述开关切换到所述第一节点时，所述第一输出信号被发送到所述第三节点 作为第三输出信号，并且当开关切换到第二节点时，第二输出信号被发送到第三节点并用作第三输出信号。

公开(公告)号：US20050062549A1

公开(公告)日：2005-03-24

申请号：US10935863

申请日：2004-09-08

Applicant: Chun-Wei Lin ,  Hsueh-Kun Liao ,  Chih-Ching Chen

Inventor： Chun-Wei Lin ,  Hsueh-Kun Liao ,  Chih-Ching Chen

IPC: H03L7/00 ,  H03L7/06 ,  H03L7/107 ,  H03L7/181

CPC classification number: H03L7/181 ,  H03L7/0805 ,  H03L7/107 ,  H03L7/1075

Abstract: A digital phase-locked loop circuit includes a counter for outputting a count value corresponding to an output frequency outputted by a voltage controlled oscillator in response to a control voltage signal, a comparator for comparing the count value from the counter with a target value associated with a target frequency output and for outputting a comparison signal according to a comparison result therebetween, a digital reference value generator for outputting a digital reference value according to the comparison signal from the comparator and including a register for storing the digital reference value therein, and a digital-to-analog converter for generating the control voltage signal based on the digital reference value received from the digital reference value generator.

Abstract translation: 数字锁相环电路包括：计数器，用于响应于控制电压信号输出与压控振荡器输出的输出频率对应的计数值;比较器，用于将来自计数器的计数值与与 目标频率输出，并根据比较结果输出比较信号;数字参考值发生器，用于根据来自比较器的比较信号输出数字参考值，并包括用于存储数字参考值的寄存器，以及 数模转换器，用于基于从数字参考值发生器接收的数字参考值产生控制电压信号。

公开(公告)号：US20090233566A1

公开(公告)日：2009-09-17

申请号：US12045707

申请日：2008-03-11

Applicant: Tsung-Ling Li ,  Hsiang-Hui Chang ,  Chia-Huang Fu ,  En-Hsiang Yeh ,  Hsueh-Kun Liao ,  Chieh-Hung Chen

Inventor： Tsung-Ling Li ,  Hsiang-Hui Chang ,  Chia-Huang Fu ,  En-Hsiang Yeh ,  Hsueh-Kun Liao ,  Chieh-Hung Chen

IPC: H03J7/02 ,  H04B1/06

CPC classification number: H04B17/0085 ,  H04B17/20 ,  H04B17/21 ,  H04B17/318

Abstract: A calibration circuit for calibrating an output level of a demodulator includes a test signal generator, an RSSI module and a calibration module. The test signal generator generates a test signal, and the RSSI module detects the test signal to generate a control signal, wherein the control signal controls the demodulator to process the test signal to generate a determined output signal. The calibration module then calibrates the RSSI module according to the output signal in order to calibrate the output level of the demodulator. When the control signal is utilized to selectively enable or disable a soft-mute function of the demodulator, the calibration module can be utilized to calibrate or determine the soft-mute function of the demodulator.

Abstract translation: 用于校准解调器的输出电平的校准电路包括测试信号发生器，RSSI模块和校准模块。 测试信号发生器产生测试信号，RSSI模块检测测试信号以产生控制信号，其中控制信号控制解调器处理测试信号以产生确定的输出信号。 然后校准模块根据输出信号校准RSSI模块，以校准解调器的输出电平。 当使用控制信号来选择性地启用或禁用解调器的软静音功能时，校准模块可用于校准或确定解调器的软静音功能。

公开(公告)号：US20090195302A1

公开(公告)日：2009-08-06

申请号：US12025085

申请日：2008-02-04

Applicant: Yu-Hsin Lin ,  Hsueh-Kun Liao

Inventor： Yu-Hsin Lin ,  Hsueh-Kun Liao

IPC: G05F3/02

CPC classification number: H03F3/505 ,  H03F2200/453 ,  H03F2203/5036

Abstract: A reference buffer is disclosed. The reference buffer includes a main source follower stage, a replica source follower stage, and a low-pass filter. The main source follower stage provides a first main voltage according to a first driving voltage. The replica source follower stage duplicates the first main voltage to generate a first reference voltage. The low-pass filter is coupled between the main source follower stage and the replica source follower stage.

Abstract translation: 公开了一种参考缓冲器。 参考缓冲器包括主源跟随器级，副源级跟随器级和低通滤波器。 主源极跟随器级根据第一驱动电压提供第一主电压。 复制源极跟随器级复制第一主电压以产生第一参考电压。 低通滤波器耦合在主源跟随器级和复制源跟随器级之间。

公开(公告)号：US20090066396A1

公开(公告)日：2009-03-12

申请号：US11853053

申请日：2007-09-11

Applicant: Yu-Hsin Lin ,  Hsueh-Kun Liao

Inventor： Yu-Hsin Lin ,  Hsueh-Kun Liao

IPC: H03K3/012

CPC classification number: H03K3/356113 ,  H03K3/012 ,  H03K3/0375

Abstract: A level shifting circuit is provided. Thin oxide devices are utilized to reduce the threshold, and thick oxide devices are utilized to protect the thin oxides from breakdown. An input voltage input voltage swings between a low supply voltage and ground. An output voltage swings between a high supply voltage and the ground. An inverter with input connected to the input voltage, outputs an inverted input voltage. The input voltage is subsequently between 0.5V to 2.5V, and the output voltage is subsequently between 3V to 10V.

Abstract translation: 提供电平移位电路。 利用薄氧化物器件来降低阈值，并且使用厚氧化物器件来保护薄氧化物不被击穿。 输入电压输入电压在低电源电压和地之间摆动。 输出电压在高电源电压和地之间摆动。 输入端连接到输入电压的逆变器输出反相输入电压。 输入电压随后在0.5V至2.5V之间，输出电压随后在3V至10V之间。

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。