公开(公告)号：US20070280079A1

公开(公告)日：2007-12-06

申请号：US11758006

申请日：2007-06-05

Applicant: Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Yu-Hsuan Lin

Inventor： Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Yu-Hsuan Lin

IPC: G11B20/10

CPC classification number: G11B20/10009 ,  G11B2220/2537

Abstract: An asymmetry measurement apparatus is disclosed. The asymmetry measurement apparatus is designed for detecting the recorded data reproduction waveform of an optical storage device in digital domain. The asymmetry measurement apparatus includes an Analog to Digital Converter (ADC) for converting an analog signal to a digital signal; a detection unit for detecting plurality values of the digital signal; and an asymmetry calculation unit for generating an asymmetry value of the digital signal according to the plurality values.

Abstract translation: 公开了一种不对称测量装置。 不对称测量装置被设计用于检测数字域中的光存储装置的记录数据再现波形。 不对称测量装置包括用于将模拟信号转换为数字信号的模数转换器（ADC）; 检测单元，用于检测数字信号的多个值; 以及不对称计算单元，用于根据多个值产生数字信号的不对称值。

公开(公告)号：US20070280072A1

公开(公告)日：2007-12-06

申请号：US11755237

申请日：2007-05-30

Applicant: Bing-Yu Hsieh ,  Yuh Cheng ,  Shu-Hung Chou ,  Jung-Feng Ho

Inventor： Bing-Yu Hsieh ,  Yuh Cheng ,  Shu-Hung Chou ,  Jung-Feng Ho

IPC: G11B20/10

CPC classification number: G11B20/1419 ,  G11B27/24 ,  G11B2020/1269

Abstract: The invention provides an apparatus for demodulating an Address In Pre-groove (ADIP) symbol. The ADIP symbol is carried by a wobble signal of an optical disk and comprises a series of ADIP bits permuted according to one of a plurality of permutation patterns to make up the ADIP symbol. A wobble extraction module extracts the wobble signal from the optical disk. A reference wobble generator generates a reference wobble with the same frequency and phase as a fundamental frequency and phase of a positive wobble cycle of the wobble signal. A waveform difference measurement module then measures a difference between the wobble signal and the reference wobble to obtain a series of difference measurement values respectively corresponding to the ADIP bits. A pattern matching module then compares probabilities of the permutation of the ADIP bits agreeing with each of the permutation patterns according to the difference measurement values to determine the ADIP symbol.

Abstract translation: 本发明提供了一种用于解调预编码地址（ADIP）符号的装置。 ADIP符号由光盘的摆动信号承载，并且包括根据多个置换模式中的一个置换的一系列ADIP位，以构成ADIP符号。 摆动提取模块从光盘中提取摆动信号。 参考摆动发生器产生与摆动信号的正摆动周期的基频和相位相同的频率和相位的参考摆动。 波形差测量模块然后测量摆动信号和参考摆动之间的差异，以获得分别对应于ADIP位的一系列差分测量值。 模式匹配模块然后根据差值测量值来比较与每个置换模式一致的ADIP位置的概率，以确定ADIP符号。

公开(公告)号：US20070280059A1

公开(公告)日：2007-12-06

申请号：US11757426

申请日：2007-06-04

Applicant: Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Yu-Hsuan Lin

Inventor： Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Yu-Hsuan Lin

IPC: G11B7/00

CPC classification number: G11B7/094 ,  G11B7/0941 ,  G11B7/0956 ,  G11B20/10009 ,  G11B2020/1287

Abstract: An apparatus for light spot servo signal detection for reading an optical recording medium having a plurality of non-writable areas between writable data areas containing address information. An optical pickup provides a light spot to the non-writable areas of the optical recording medium with a predetermined state according to a control signal, and detects optical reflecting signals from the optical recording medium to generate a detection signal. A signal adjusting module offsets signal levels of the detection signal to an operating range to generate an offset shifted detection signal. An analog to digital converter digitizes the offset shifted detection signal to generate a digital signal. A detection circuit detects the servo detection signal according to the digital signal.

Abstract translation: 一种光点伺服信号检测装置，用于读取在包含地址信息的可写数据区之间具有多个不可写区域的光记录介质。 光拾取器根据控制信号以预定状态向光记录介质的不可写区域提供光点，并且检测来自光记录介质的光反射信号以产生检测信号。 信号调整模块将检测信号的信号电平偏移到工作范围以产生偏移移位的检测信号。 模数转换器对偏移检测信号进行数字化以产生数字信号。 检测电路根据数字信号检测伺服检测信号。

公开(公告)号：US20070002711A1

公开(公告)日：2007-01-04

申请号：US11466458

申请日：2006-08-23

Applicant: Yuh Cheng

Inventor： Yuh Cheng

IPC: G11B7/00 ,  G11B20/10

CPC classification number: G11B7/0906 ,  G11B7/0943

Abstract: A method for deriving a tracking error signal based on a first analog detection signal and a second analog detection signal. The method includes summing the first analog detection signal and the second analog detection signal to generate an analog sum signal. An analog delay device is utilized to delay the analog sum signal to be a delay signal. The delay signal is digitalized into a digital delay signal. The first analog detection signal and the second analog detection signal are respectively transformed into a first digital detection signal and a second digital detect signal. The tracking error signal is then generated utilizing a comparing operation among the digital delay signal, the first digital detect signal, and the first digital detect signal.

Abstract translation: 一种用于基于第一模拟检测信号和第二模拟检测信号导出跟踪误差信号的方法。 该方法包括对第一模拟检测信号和第二模拟检测信号求和以产生模拟和信号。 使用模拟延迟装置将模拟和信号延迟为延迟信号。 延迟信号被数字化为数字延迟信号。 第一模拟检测信号和第二模拟检测信号分别变换为第一数字检测信号和第二数字检测信号。 然后利用数字延迟信号，第一数字检测信号和第一数字检测信号之间的比较操作产生跟踪误差信号。

公开(公告)号：US20060285455A1

公开(公告)日：2006-12-21

申请号：US11425153

申请日：2006-06-20

Applicant: Yuh Cheng ,  Gwo-Huei Wu

Inventor： Yuh Cheng ,  Gwo-Huei Wu

IPC: G11B20/10

CPC classification number: G11B7/0956 ,  G11B7/094 ,  G11B7/0943

Abstract: A control circuit of an optical storage device includes a loop phase calculation unit for calculating a closed loop phase of a servo system according to at least one error signal of the servo system and a system control unit coupled to the loop phase calculation unit for generating an optimized control parameter according to the closed loop phase to perform compensation control, wherein the servo system comprises a tracking servo control system or a focusing servo control system, the compensation control is radial tilt control or focus balance adjustment, and the optimized control parameter is at least one optimized control parameter determined according to a plurality of closed loop phases calculated by the loop phase calculation unit.

Abstract translation: 光存储装置的控制电路包括：循环相位计算单元，用于根据所述伺服系统的至少一个误差信号计算伺服系统的闭环相位;耦合到所述环路相位计算单元的系统控制单元，用于产生 根据闭环相位优化控制参数进行补偿控制，其中伺服系统包括跟踪伺服控制系统或聚焦伺服控制系统，补偿控制为径向倾斜控制或聚焦平衡调整，优化控制参数为 根据由循环相位计算单元计算出的多个闭环相位来确定最少一个优化控制参数。

公开(公告)号：US07113461B2

公开(公告)日：2006-09-26

申请号：US10601642

申请日：2003-06-24

Applicant: Chih-Chien Huang ,  Yuh Cheng ,  Nai-Heng Tseng

Inventor： Chih-Chien Huang ,  Yuh Cheng ,  Nai-Heng Tseng

IPC: G11B7/00

CPC classification number: G11B7/0943 ,  G11B7/0906

Abstract: A circuit for tracking error signal detection on an optical storage medium, which has a plurality of digitizers, a plurality of logic comparators and a difference amplifier, is disclosed. The circuit involves summing the signals to be compared and obtaining a delay signal via a delayer. Therefore, the phase difference of the signals is detected via the delay signal to obtain the tracking error signal of the optical storage medium.

Abstract translation: 公开了一种用于跟踪具有多个数字化仪，多个逻辑比较器和差分放大器的光存储介质上的误差信号检测的电路。 该电路包括对要比较的信号进行求和并经延迟器获得延迟信号。 因此，通过延迟信号检测信号的相位差，以获得光存储介质的跟踪误差信号。

公开(公告)号：US20050097422A1

公开(公告)日：2005-05-05

申请号：US10976121

申请日：2004-10-28

Applicant: Yuh Cheng ,  Pi-Hai Liu

Inventor： Yuh Cheng ,  Pi-Hai Liu

IPC: G06F11/00 ,  G06F11/30 ,  G08C25/00 ,  G11B20/10 ,  G11B20/14 ,  H03M13/00 ,  H04L1/00

CPC classification number: G11B20/10009 ,  G11B20/1426

Abstract: An apparatus for data recovery includes a multi-level comparison unit, a detection logic unit, and a data composer. The multi-level comparison unit compares an input signal with M different reference signal levels to generate M digital data, the number M being greater than or equal to 2. The detection logic unit is coupled to the multi-level comparison unit, and performs logic operations upon specified lengths over the M digital data obtained from the multi-level comparison unit. The data composer is coupled to the multi-level comparison unit and the detection logic unit. The data composer generates recovered data conforming with a run length encoding constraint based on the M digital data obtained from the multi-level comparison unit and the result obtained from the detection logic unit.

Abstract translation: 用于数据恢复的装置包括多级比较单元，检测逻辑单元和数据编辑器。 多电平比较单元将输入信号与M个不同的参考信号电平进行比较以产生M个数字数据，数字M大于或等于2.检测逻辑单元耦合到多电平比较单元，并执行逻辑 在从多级比较单元获得的M数字数据上指定长度的操作。 数据编辑器耦合到多级比较单元和检测逻辑单元。 数据编辑器基于从多级别比较单元获得的M数字数据和从检测逻辑单元获得的结果，生成符合游程长度编码约束的恢复数据。

公开(公告)号：US20110276988A1

公开(公告)日：2011-11-10

申请号：US13091157

申请日：2011-04-21

Applicant: Po-Hsiang Huang ,  Yuh Cheng ,  Hao-Hui Yin ,  Li-Chun Yang

Inventor： Po-Hsiang Huang ,  Yuh Cheng ,  Hao-Hui Yin ,  Li-Chun Yang

IPC: G11B17/04

CPC classification number: G11B17/056 ,  G11B33/122

Abstract: An optical disc drive includes a housing, a disc tray, a connector, a spindle motor, an OPU, a motor drive, and a control circuit. The disc tray may slide into or out of the housing through its opening. The connector is installed on the housing for transmitting host signals to the disc tray. The control circuit is installed on the disc tray for processing the host signals, thereby operating the spindle motor and the OPU accordingly.

Abstract translation: 光盘驱动器包括外壳，盘托盘，连接器，主轴马达，OPU，马达驱动器和控制电路。 光盘托盘可以通过其开口滑入或移出外壳。 连接器安装在外壳上，用于将主机信号传输到光盘托盘。 控制电路安装在盘托架上，用于处理主机信号，从而相应地操作主轴电机和OPU。

公开(公告)号：US07944784B2

公开(公告)日：2011-05-17

申请号：US12716907

申请日：2010-03-03

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：US20110110205A1

公开(公告)日：2011-05-12

申请号：US13009668

申请日：2011-01-19

Applicant: Chia-Wei Liao ,  Chih-Ching Chen ,  Yuh Cheng ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Chun-Yu Lin ,  Shu-Hung Chou

Inventor： Chia-Wei Liao ,  Chih-Ching Chen ,  Yuh Cheng ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Chun-Yu Lin ,  Shu-Hung Chou

IPC: G11B7/00

CPC classification number: G11B7/0941 ,  G11B7/0903

Abstract: The invention provides an apparatus for controlling servo signal gains of an optical disc drive. The apparatus adjusts the gains of a plurality of servo signals controlling a servo system of the optical disc drive when the optical disk drive encounters an operating state transition. In a first mode, at least one AGC loop of the apparatus compensates the gains of the servo signals with a selectable bandwidth during a specific period after the operating state transition to accelerate the convergence of the servo signals. In a second mode, at least one AGC loop of the apparatus reloads the previously saved convergence values or pre-determined values as the initial values according to the current operating state immediately after the operating state transition to accelerate the convergence of the servo signals.

Abstract translation: 本发明提供一种用于控制光盘驱动器的伺服信号增益的装置。 当光盘驱动器遇到操作状态转换时，该装置调节控制光盘驱动器的伺服系统的多个伺服信号的增益。 在第一模式中，该装置的至少一个AGC环路在操作状态转换之后的特定时段期间以可选择的带宽补偿伺服信号的增益，以加速伺服信号的收敛。 在第二模式中，装置的至少一个AGC环路根据紧接在运行状态转换之后的当前运行状态重新加载先前存储的收敛值或预定值作为初始值，以加速伺服信号的收敛。