专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明申请

US20090073827A1 AUTOMATIC POWER CONTROL SYSTEM FOR OPTICAL DISC DRIVE AND METHOD THEREOF 有权
标题翻译：光盘驱动自动功率控制系统及其方法
公开(公告)号：US20090073827A1
公开(公告)日：2009-03-19
申请号：US12273601
申请日：2008-11-19
申请人： Bing-Yu Hsieh , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Chih-Ching Chen , Chia-Wei Liao
发明人： Bing-Yu Hsieh , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Chih-Ching Chen , Chia-Wei Liao
IPC分类号： G11B7/125
CPC分类号： H03M1/1225 , G11B7/0903 , G11B7/0912 , G11B7/0941 , G11B7/1263 , H03M1/129
摘要： An automatic power control system, a down sampling circuit and a down sampling method. The automatic power control system is incorporated in an optical disc drive comprising a laser diode for receiving a control signal to generate a laser beam; and a photodetector for detecting the laser beam to generate an analog input signal. The automatic power control system comprises an analog-to-digital converter, a down sampling circuit, a comparator, and a digital-to-analog converter. The analog-to-digital converter converts the analog input signal to digital data. The down sampling circuit, coupled to the analog-to-digital converter, comprises a down sampler, a counter, and a controller. The down sampler receives a predetermined amount of digital data to generate representation data. The counter, coupled to the down sampler, calculates the amount of digital data, and resets the down sampler when the amount equals or exceeds the predetermined count. The controller, coupled to the counter, disables the counter when the digital data is invalid. The comparator, coupled to the down sampling circuit, compares the representation data with predetermined target data to generate error data. The digital-to-analog converter, coupled to the comparator, converts the error data to analog to generate the control signal.
摘要翻译：自动功率控制系统，下采样电路和下采样方法。自动功率控制系统结合在包括用于接收控制信号以产生激光束的激光二极管的光盘驱动器中; 以及用于检测激光束以产生模拟输入信号的光电检测器。自动功率控制系统包括模数转换器，下采样电路，比较器和数 - 模转换器。模数转换器将模拟输入信号转换为数字数据。耦合到模数转换器的下采样电路包括下采样器，计数器和控制器。下采样器接收预定量的数字数据以产生表示数据。耦合到下采样器的计数器计算数字数据量，并且当量等于或超过预定计数时重置下采样器。耦合到计数器的控制器在数字数据无效时禁用计数器。耦合到下采样电路的比较器将表示数据与预定目标数据进行比较以产生误差数据。耦合到比较器的数模转换器将误差数据转换成模拟以产生控制信号。

22. 发明申请

US20070291622A1 HIGH PASS FILTERING DEVICE FOR AN OPTICAL DISC DRIVE 审中-公开
标题翻译：用于光盘驱动器的高通滤波器件
公开(公告)号：US20070291622A1
公开(公告)日：2007-12-20
申请号：US11758094
申请日：2007-06-05
申请人： Kuo-Jung Lan , Chih-Ching Chen , Chia-Wei Liao , Yuh Cheng , Ming-Jiou Yu , Yu-Hsuan Lin , Shu-Hung Chou
发明人： Kuo-Jung Lan , Chih-Ching Chen , Chia-Wei Liao , Yuh Cheng , Ming-Jiou Yu , Yu-Hsuan Lin , Shu-Hung Chou
IPC分类号： G11B7/00
CPC分类号： G11B7/0943 , G11B7/0903 , G11B7/0909 , G11B7/1263
摘要： A high pass filtering device for an optical disc drive comprises a first low pass filter (LPF) of a first sampling rate, filtering a digital input signal; a down-sampler receiving a first filtered signal form the first LPF to down-sample the first filtered signal by an integer factor N; a second LPF of a second sampling rate, filtering a first down-sampled signal from the down-sampler, wherein the second LPF has a corner frequency corresponding to a desired frequency of the high pass filtering device, and the second sampling rate is equal to 1/N times the first sampling rate; an up-sampler receiving a second filtered signal from the second LPF to up-sample the second filtered signal by the factor N; and a subtractor subtracting an up-sampled signal output by the up-sampler from the digital input signal when the filter frequency is below a threshold frequency.
摘要翻译：用于光盘驱动器的高通滤波装置包括第一采样率的第一低通滤波器（LPF），对数字输入信号进行滤波; 下采样器从第一LPF接收第一滤波信号，以对第一滤波信号进行下采样整数因子N; 第二采样率的第二LPF，滤波来自下采样器的第一下采样信号，其中第二LPF具有对应于高通滤波器件的期望频率的转角频率，第二采样率等于 1 / N次第一次采样率; 上采样器接收来自第二LPF的第二滤波信号，以将第二滤波信号向上采样因子N; 以及当滤波器频率低于阈值频率时，减法器从数字输入信号中减去上采样器输出的上采样信号。

23. 发明申请

US20070291613A1 Signal processing apparatus and method for an optical disc drive 有权
标题翻译：用于光盘驱动器的信号处理装置和方法
公开(公告)号：US20070291613A1
公开(公告)日：2007-12-20
申请号：US11758017
申请日：2007-06-05
申请人： Chia-Wei Liao , Chih-Ching Chen , Yuh Cheng , Ming-Jiou Yu , Kuo-Jung Lan , Chun-Yu Lin , Shiue-Shin Liu , Shu-Hung Chou , Yu-Hsuan Lin
发明人： Chia-Wei Liao , Chih-Ching Chen , Yuh Cheng , Ming-Jiou Yu , Kuo-Jung Lan , Chun-Yu Lin , Shiue-Shin Liu , Shu-Hung Chou , Yu-Hsuan Lin
IPC分类号： G11B7/00
CPC分类号： G11B20/10 , G11B7/0903 , G11B7/0909 , G11B7/0943 , G11B7/1263 , G11B20/10009 , G11B2220/2537
摘要： A signal processing apparatus includes sample and hold units for holding a plurality of analog photo diode signals. A signal holding controller generates control signals to the sample and hold units for holding the analog photo diode signals. Analog adjusting modules adjust the held analog photo diode signals. A multiplexer selectively couples one input end of the multiplexer to the output end of the multiplexer for outputting the adjusted analog photo diode signals. An analog to digital converter converts the adjusted analog photo diode signals into digital photo diode signals.
摘要翻译：信号处理装置包括用于保持多个模拟光电二极管信号的采样和保持单元。信号保持控制器产生用于保持模拟光电二极管信号的采样和保持单元的控制信号。模拟调整模块调节保持的模拟光电二极管信号。复用器选择性地将多路复用器的输入端耦合到多路复用器的输出端，以输出经调整的模拟光电二极管信号。模数转换器将调整后的模拟光电二极管信号转换为数字光电二极管信号。

24. 发明申请

US20070280070A1 WOBBLE DETECTION CIRCUIT AND METHOD FOR PROCESSING WOBBLE SIGNALS 失效
标题翻译： WOBBLE检测电路和处理无线信号的方法
公开(公告)号：US20070280070A1
公开(公告)日：2007-12-06
申请号：US11755202
申请日：2007-05-30
申请人： Yuh Cheng , Chih-Ching Chen , Chia-Wei Liao , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Bing-Yu Hsieh
发明人： Yuh Cheng , Chih-Ching Chen , Chia-Wei Liao , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Bing-Yu Hsieh
IPC分类号： G11B20/10
CPC分类号： G11B20/1217 , G11B7/0053 , G11B20/10009 , G11B20/10027 , G11B20/10037 , G11B27/24 , G11B2020/1238 , G11B2020/1239 , G11B2020/1268 , G11B2020/1269 , G11B2020/1274 , G11B2020/1287 , G11B2220/2562 , G11B2220/2579
摘要： The invention provides a wobble detection circuit. An exemplary embodiment of the wobble detection circuit comprises an automatic gain control module, an analog to digital converter, a digital band pass filter, and a digital band pass filter. The automatic gain control module amplifies a first input signal and a second input signal detected by a pickup head to the same magnitude to obtain a first amplified signal and a second amplified signal. The adder then subtracts the second amplified signal from the first amplified signal to obtain an analog wobble signal. The analog to digital converter then converts the analog wobble signal to a first digital wobble signal. Finally, the digital band pass filter accepts frequency components of the first digital wobble signal within a pass band and rejects frequency components of the first digital wobble signal outside the pass band to obtain a second digital wobble signal.
摘要翻译：本发明提供一种摆动检测电路。摆动检测电路的示例性实施例包括自动增益控制模块，模数转换器，数字带通滤波器和数字带通滤波器。自动增益控制模块将由拾取头检测到的第一输入信号和第二输入信号放大到相同的大小以获得第一放大信号和第二放大信号。然后，加法器从第一放大信号中减去第二放大信号以获得模拟摆动信号。然后，模数转换器将模拟摆动信号转换为第一数字摆动信号。最后，数字带通滤波器接收通带内的第一数字摆动信号的频率分量，并且抑制通带外的第一数字摆动信号的频率分量，以获得第二数字摆动信号。

25. 发明授权

US08089834B2 Apparatus for controlling servo signal gains of an optical disc drive and method of the same 有权
标题翻译：用于控制光盘驱动器的伺服信号增益的装置及其方法
公开(公告)号：US08089834B2
公开(公告)日：2012-01-03
申请号：US13009668
申请日：2011-01-19
申请人： Chia-Wei Liao , Chih-Ching Chen , Yuh Chen , Ming-Jiou Yu , Kuo-Jung Lan , Chun-Yu Lin , Shu-Hung Chou
发明人： Chia-Wei Liao , Chih-Ching Chen , Yuh Chen , Ming-Jiou Yu , Kuo-Jung Lan , Chun-Yu Lin , Shu-Hung Chou
IPC分类号： G11B7/00
CPC分类号： G11B7/0941 , G11B7/0903
摘要： 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.
摘要翻译：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。

26. 发明申请

US20090296545A1 APPARATUS AND METHOD FOR DEMODULATING INPUT SIGNAL MODULATED FROM REFERENCE SIGNAL AND DATA SIGNAL 有权
标题翻译：用于解调参考信号和数据信号调制输入信号的装置和方法
公开(公告)号：US20090296545A1
公开(公告)日：2009-12-03
申请号：US12129666
申请日：2008-05-29
申请人： Yu-Hsuan Lin , Shu-Hung Chou , Pi-Hai Liu
发明人： Yu-Hsuan Lin , Shu-Hung Chou , Pi-Hai Liu
IPC分类号： G11B20/00
CPC分类号： G11B20/1403 , G11B7/0053 , G11B20/10037 , G11B20/10222 , G11B20/10425 , G11B20/1217 , G11B2020/1239 , G11B2020/1268 , G11B2220/2541
摘要： An apparatus and method for demodulating an input signal modulated from a reference signal and a data signal are disclosed. The apparatus includes a determining unit, a first calculating unit, and a comparing unit. The determining unit is utilized for determining a plurality of first calculating timings of changing different calculating modes according to the input signal. The first calculating unit is coupled to the determining unit and utilized for generating a first calculating result of the input signal according to the first calculating timings and the calculating modes thereof. The comparing unit is coupled to the first calculating unit and utilized for generating a comparing result according to the first calculating result of the input signal and a threshold setting, and for outputting a demodulated data of the input signal according to the comparing result.
摘要翻译：公开了一种用于解调从参考信号和数据信号调制的输入信号的装置和方法。该装置包括确定单元，第一计算单元和比较单元。确定单元用于根据输入信号确定改变不同计算模式的多个第一计算定时。第一计算单元耦合到确定单元，用于根据第一计算定时及其计算模式产生输入信号的第一计算结果。比较单元耦合到第一计算单元，用于根据输入信号的第一计算结果和阈值设置产生比较结果，并且用于根据比较结果输出输入信号的解调数据。

27. 发明申请

US20070280079A1 ASYMMETRY MEASUREMENT APPARATUS 审中-公开
标题翻译：不对称测量装置
公开(公告)号：US20070280079A1
公开(公告)日：2007-12-06
申请号：US11758006
申请日：2007-06-05
申请人： Yuh Cheng , Chih-Ching Chen , Chia-Wei Liao , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Yu-Hsuan Lin
发明人： Yuh Cheng , Chih-Ching Chen , Chia-Wei Liao , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Yu-Hsuan Lin
IPC分类号： G11B20/10
CPC分类号： G11B20/10009 , G11B2220/2537
摘要： 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.
摘要翻译：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。

28. 发明申请

US20070280072A1 APPARATUS FOR DEMODULATING ADDRESS IN PRE-GROOVE SYMBOLS AND APPARATUS FOR DECODING PRE-PIT SYMBOLS 失效
标题翻译：用于解除预编码符号的地址的装置和解码前缀符号的装置
公开(公告)号：US20070280072A1
公开(公告)日：2007-12-06
申请号：US11755237
申请日：2007-05-30
申请人： Bing-Yu Hsieh , Yuh Cheng , Shu-Hung Chou , Jung-Feng Ho
发明人： Bing-Yu Hsieh , Yuh Cheng , Shu-Hung Chou , Jung-Feng Ho
IPC分类号： G11B20/10
CPC分类号： G11B20/1419 , G11B27/24 , G11B2020/1269
摘要： 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.
摘要翻译：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。

29. 发明申请

US20070280059A1 APPARATUS AND METHODS FOR LIGHT SPOT SERVO SIGNAL DETECTION 有权
标题翻译：用于轻点服务信号检测的装置和方法
公开(公告)号：US20070280059A1
公开(公告)日：2007-12-06
申请号：US11757426
申请日：2007-06-04
申请人： Yuh Cheng , Chih-Ching Chen , Chia-Wei Liao , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Yu-Hsuan Lin
发明人： Yuh Cheng , Chih-Ching Chen , Chia-Wei Liao , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Yu-Hsuan Lin
IPC分类号： G11B7/00
CPC分类号： G11B7/094 , G11B7/0941 , G11B7/0956 , G11B20/10009 , G11B2020/1287
摘要： 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.
摘要翻译：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。

30. 发明申请

US20070279274A1 AUTOMATIC POWER CONTROL SYSTEM FOR OPTICAL DISC DRIVE AND METHOD THEREOF 失效
标题翻译：光盘驱动自动功率控制系统及其方法
公开(公告)号：US20070279274A1
公开(公告)日：2007-12-06
申请号：US11758119
申请日：2007-06-05
申请人： Bing-Yu Hsieh , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Chih-Ching Chen , Chia-Wei Liao
发明人： Bing-Yu Hsieh , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Chih-Ching Chen , Chia-Wei Liao
IPC分类号： H03M1/12
CPC分类号： H03M1/1225 , G11B7/0903 , G11B7/0912 , G11B7/0941 , G11B7/1263 , H03M1/129
摘要： An automatic power control system, a down sampling circuit and a down sampling method. The automatic power control system is incorporated in an optical disc drive comprising a laser diode for receiving a control signal to generate a laser beam; and a photodetector for detecting the laser beam to generate an analog input signal. The automatic power control system comprises an analog-to-digital converter, a down sampling circuit, a comparator, and a digital-to-analog converter. The analog-to-digital converter converts the analog input signal to digital data. The down sampling circuit, coupled to the analog-to-digital converter, comprises a down sampler, a counter, and a controller. The down sampler receives a predetermined amount of digital data to generate representation data. The counter, coupled to the down sampler, calculates the amount of digital data, and resets the down sampler when the amount equals or exceeds the predetermined count. The controller, coupled to the counter, disables the counter when the digital data is invalid. The comparator, coupled to the down sampling circuit, compares the representation data with predetermined target data to generate error data. The digital-to-analog converter, coupled to the comparator, converts the error data to analog to generate the control signal.
摘要翻译：自动功率控制系统，下采样电路和下采样方法。自动功率控制系统结合在包括用于接收控制信号以产生激光束的激光二极管的光盘驱动器中; 以及用于检测激光束以产生模拟输入信号的光电检测器。自动功率控制系统包括模数转换器，下采样电路，比较器和数 - 模转换器。模数转换器将模拟输入信号转换为数字数据。耦合到模数转换器的下采样电路包括下采样器，计数器和控制器。下采样器接收预定量的数字数据以产生表示数据。耦合到下采样器的计数器计算数字数据量，并且当量等于或超过预定计数时重置下采样器。耦合到计数器的控制器在数字数据无效时禁用计数器。耦合到下采样电路的比较器将表示数据与预定目标数据进行比较以产生误差数据。耦合到比较器的数模转换器将误差数据转换成模拟以产生控制信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式