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1. 发明授权

US08451884B2 Offset calibration methods and radio frequency data path circuits 有权
标题翻译：偏移校准方法和射频数据路径电路
公开(公告)号：US08451884B2
公开(公告)日：2013-05-28
申请号：US12034679
申请日：2008-02-21
申请人： Chien-Ming Chen , Chih-Chien Huang , Shang-Yi Lin
发明人： Chien-Ming Chen , Chih-Chien Huang , Shang-Yi Lin
IPC分类号： H03H7/30
CPC分类号： H04L25/061 , H04L27/01
摘要： An offset calibration method is provided. Two input terminals of an equalizer are switched to a common voltage at a first time point, wherein the equalizer generates a first equalized signal and a second equalized signal according to the common voltage. It is determined whether a first offset voltage is present in the equalizer according to the first and second equalized signals generated from the common voltage. If the first offset voltage is determined to be present in the equalizer, a first compensation voltage is provided to the equalizer.
摘要翻译：提供偏移校准方法。均衡器的两个输入端在第一时间点切换到公共电压，其中均衡器根据公共电压产生第一均衡信号和第二均衡信号。根据从公共电压产生的第一和第二均衡信号确定均衡器中是否存在第一偏移电压。如果第一偏移电压被确定为存在于均衡器中，则向均衡器提供第一补偿电压。

2. 发明申请

US20080285639A1 OFFSET CALIBRATION METHODS AND RADIO FREQUENCY DATA PATH CIRCUITS 有权
标题翻译：偏移校准方法和无线电频率数据路径电路
公开(公告)号：US20080285639A1
公开(公告)日：2008-11-20
申请号：US12034679
申请日：2008-02-21
申请人： Chien-Ming Chen , Chih-Chien Huang , Shang-Yi Lin
发明人： Chien-Ming Chen , Chih-Chien Huang , Shang-Yi Lin
IPC分类号： H04L27/01
CPC分类号： H04L25/061 , H04L27/01
摘要： An offset calibration method is provided. Two input terminals of an equalizer are switched to a common voltage at a first time point, wherein the equalizer generates a first equalized signal and a second equalized signal according to the common voltage. It is determined whether a first offset voltage is present in the equalizer according to the first and second equalized signals generated from the common voltage. If the first offset voltage is determined to be present in the equalizer, a first compensation voltage is provided to the equalizer.
摘要翻译：提供偏移校准方法。均衡器的两个输入端在第一时间点切换到公共电压，其中均衡器根据公共电压产生第一均衡信号和第二均衡信号。根据从公共电压产生的第一和第二均衡信号确定均衡器中是否存在第一偏移电压。如果第一偏移电压被确定为存在于均衡器中，则向均衡器提供第一补偿电压。

3. 发明授权

US07773480B2 Device, method for processing RF signal, and optical disk drive utilizing the same 有权
标题翻译：用于处理RF信号的装置，方法和利用其的光盘驱动器
公开(公告)号：US07773480B2
公开(公告)日：2010-08-10
申请号：US12028023
申请日：2008-02-08
申请人： Chih-Chien Huang , Chih-Ching Chen , Yuh Cheng , Chien Ming Chen
发明人： Chih-Chien Huang , Chih-Ching Chen , Yuh Cheng , Chien Ming Chen
IPC分类号： G11B20/10
CPC分类号： G11B20/10009 , G11B7/005 , G11B20/10027 , G11B20/10046 , H03H7/0153
摘要： A device for processing a radio frequency (RF) signal of an optical disk drive includes a high-pass (HP) filter, an RF variable gain amplifier (VGA), an RF analog-digital converter (ADC), and a digital module. The HP filter filters the RF signal and is capable of selectively utilizing one of a first cut-off frequency and a second cut-off frequency. The RF VGA amplifies the filtered RF signal. The RF ADC converts the amplified RF signal into a digital code. The digital module is capable of executing a first function and a second function with the digital code. The HP filter utilizes the first cut-off frequency when the digital module desires to execute the first function, and the HP filter utilizes the second cut-off frequency when the digital module desires to execute the second function.
摘要翻译：用于处理光盘驱动器的射频（RF）信号的装置包括高通（HP）滤波器，RF可变增益放大器（VGA），RF模数转换器（ADC）和数字模块。 HP滤波器对RF信号进行滤波，并且能够选择性地利用第一截止频率和第二截止频率中的一个。 RF VGA放大滤波后的RF信号。 RF ADC将放大的RF信号转换为数字码。数字模块能够利用数字代码执行第一功能和第二功能。当数字模块希望执行第一功能时，HP滤波器利用第一截止频率，当数字模块希望执行第二功能时，HP滤波器利用第二截止频率。

4. 发明申请

US20080285393A1 PROCESSING CIRCUITS AND METHODS FOR OPTICAL DATA 失效
标题翻译：光学数据处理电路和方法
公开(公告)号：US20080285393A1
公开(公告)日：2008-11-20
申请号：US12056322
申请日：2008-03-27
申请人： Chih-Chien Huang , Chien Ming Chen , Kuo-Pin Lan
发明人： Chih-Chien Huang , Chien Ming Chen , Kuo-Pin Lan
IPC分类号： G11B7/00
CPC分类号： G11B7/005
摘要： A processing circuit for optical data is provided. The processing circuit includes a signal-processing module and a radio frequency (RF) signal-summing module. The signal-processing module averages and filters the data signals to obtain a low-frequency signal. The RF signal-summing module receives the data signals and the low-frequency signal, sums the data signals to obtain a summed data signal, and subtracts the low-frequency signal from the summed data signal to obtain a RF summing signal.
摘要翻译：提供了一种用于光学数据的处理电路。处理电路包括信号处理模块和射频（RF）信号求和模块。信号处理模块对数据信号进行平均和滤波以获得低频信号。 RF信号求和模块接收数据信号和低频信号，对数据信号进行求和以获得相加的数据信号，并从求和的数据信号中减去低频信号以获得RF求和信号。

5. 发明申请

US20080008284A1 PLL DEVICE WITH LEAKAGE CURRENT COMPENSATION UNIT 有权
标题翻译：具有泄漏电流补偿单元的PLL器件
公开(公告)号：US20080008284A1
公开(公告)日：2008-01-10
申请号：US11456324
申请日：2006-07-10
申请人： Chih-Chien Huang , Chien-Ming Chen
发明人： Chih-Chien Huang , Chien-Ming Chen
IPC分类号： H03D3/24
CPC分类号： H03L7/087 , H03L7/0891 , H03L7/095 , H03L7/18
摘要： The invention provides a PLL device comprising a PFD unit, a charging pump circuit, a loop filter, an oscillator, a feedback divider and a current compensation circuit. The PFD unit measures a phase and a frequency difference between a reference clock signal and a feedback clock signal of the PLL device to output a difference signal UP and a difference signal DN. The charging pump circuit receives and transfers the difference signals UP and DN into a current. The loop filter receives and transfers the current into a voltage. The oscillator receives the voltage and outputs an output signal. The feedback divider having a parameter N receives the output signal to generate the feedback clock signal according to the parameter N, wherein a frequency of the feedback clock signal is N times a frequency of the output signal. When the reference clock signal leads the feedback clock signal, the current compensation circuit outputs a compensation current to the loop filter.
摘要翻译：本发明提供了一种PLL器件，其包括PFD单元，充电泵电路，环路滤波器，振荡器，反馈分压器和电流补偿电路。 PFD单元测量参考时钟信号和PLL器件的反馈时钟信号之间的相位和频率差，以输出差分信号UP和差分信号DN。充电泵电路接收差分信号UP和DN并将其传送到电流。环路滤波器接收并将电流传输到电压。振荡器接收电压并输出一个输出信号。具有参数N的反馈分配器根据参数N接收输出信号以产生反馈时钟信号，其中反馈时钟信号的频率是输出信号频率的N倍。当参考时钟信号引导反馈时钟信号时，电流补偿电路向环路滤波器输出补偿电流。

6. 发明授权

US07742554B2 PLL device with leakage current compensation unit 有权
标题翻译：带有漏电流补偿单元的PLL器件
公开(公告)号：US07742554B2
公开(公告)日：2010-06-22
申请号：US11456324
申请日：2006-07-10
申请人： Chih-Chien Huang , Chien-Ming Chen
发明人： Chih-Chien Huang , Chien-Ming Chen
IPC分类号： H03D3/24
CPC分类号： H03L7/087 , H03L7/0891 , H03L7/095 , H03L7/18
摘要： The invention provides a PLL device comprising a PFD unit, a charging pump circuit, a loop filter, an oscillator, a feedback divider and a current compensation circuit. The PFD unit measures a phase and a frequency difference between a reference clock signal and a feedback clock signal of the PLL device to output a difference signal UP and a difference signal DN. The charging pump circuit receives and transfers the difference signals UP and DN into a current. The loop filter receives and transfers the current into a voltage. The oscillator receives the voltage and outputs an output signal. The feedback divider having a parameter N receives the output signal to generate the feedback clock signal according to the parameter N, wherein a frequency of the feedback clock signal is N times a frequency of the output signal. When the reference clock signal leads the feedback clock signal, the current compensation circuit outputs a compensation current to the loop filter.
摘要翻译：本发明提供了一种PLL器件，其包括PFD单元，充电泵电路，环路滤波器，振荡器，反馈分压器和电流补偿电路。 PFD单元测量参考时钟信号和PLL器件的反馈时钟信号之间的相位和频率差，以输出差分信号UP和差分信号DN。充电泵电路接收差分信号UP和DN并将其传送到电流。环路滤波器接收并将电流传输到电压。振荡器接收电压并输出一个输出信号。具有参数N的反馈分配器根据参数N接收输出信号以产生反馈时钟信号，其中反馈时钟信号的频率是输出信号频率的N倍。当参考时钟信号引导反馈时钟信号时，电流补偿电路向环路滤波器输出补偿电流。

7. 发明授权

US07602239B2 Variable gain amplifier circuits 有权
标题翻译：可变增益放大器电路
公开(公告)号：US07602239B2
公开(公告)日：2009-10-13
申请号：US12056328
申请日：2008-03-27
申请人： Wei-Liang Lee , Chih-Chien Huang , Chien-Ming Chen
发明人： Wei-Liang Lee , Chih-Chien Huang , Chien-Ming Chen
IPC分类号： H03F1/36
CPC分类号： H03G1/0088 , H03F3/45475 , H03F3/45941 , H03F2203/45212 , H03F2203/45528 , H03F2203/45534
摘要： A variable gain amplifier circuit has an amplifier, a string of resistors, a plurality of gain switches, a current source, and at least two current switches. A first input terminal of the amplifier receives an input voltage signal. The string of resistors are coupled between an output terminal of the amplifier and a bias voltage input terminal. Each of the gain switches is coupled between a second input terminal of the amplifier and one of connection nodes between two of the resistors. Each of the current switches is coupled between the current source and one of the connection nodes. The current source provides a current through the turned-on current switch.
摘要翻译：可变增益放大器电路具有放大器，一串电阻器，多个增益开关，电流源和至少两个电流开关。放大器的第一输入端接收输入电压信号。电阻串耦合在放大器的输出端和偏置电压输入端之间。每个增益开关耦合在放大器的第二输入端和两个电阻之间的一个连接节点之间。每个当前交换机耦合在当前源和一个连接节点之间。电流源通过导通电流开关提供电流。

8. 发明申请

US20090066419A1 VARIABLE GAIN AMPLIFIER CIRCUITS 有权
标题翻译：可变增益放大器电路
公开(公告)号：US20090066419A1
公开(公告)日：2009-03-12
申请号：US12056328
申请日：2008-03-27
申请人： Wei-Liang Lee , Chih-Chien Huang , Chien-Ming Chen
发明人： Wei-Liang Lee , Chih-Chien Huang , Chien-Ming Chen
IPC分类号： H03G3/00
CPC分类号： H03G1/0088 , H03F3/45475 , H03F3/45941 , H03F2203/45212 , H03F2203/45528 , H03F2203/45534
摘要： A variable gain amplifier circuit has a variable gain amplifier (VGA), a string of resistors, a plurality of gain switches, a current source, and at least two current switches. A first input terminal of the VGA receives an input voltage signal. The string of resistors are coupled between an output terminal of the VGA and a bias voltage input terminal. Each of the gain switches is coupled between a second input terminal of the VGA and one of connection nodes between two of the resistors. Each of the current switches is coupled between the current source and one of the connection nodes. The current source provides a current through the turned-on current switch.
摘要翻译：可变增益放大器电路具有可变增益放大器（VGA），一串电阻器，多个增益开关，电流源和至少两个电流开关。 VGA的第一输入端接收输入电压信号。该串电阻耦合在VGA的输出端和偏置电压输入端之间。每个增益开关耦合在VGA的第二输入端和两个电阻之间的一个连接节点之间。每个当前交换机耦合在当前源和一个连接节点之间。电流源通过导通电流开关提供电流。

9. 发明授权

US08320230B2 Processing circuits and methods for optical data 失效
标题翻译：光学数据处理电路和方法
公开(公告)号：US08320230B2
公开(公告)日：2012-11-27
申请号：US12056322
申请日：2008-03-27
申请人： Chih-Chien Huang , Chien Ming Chen , Kuo-Pin Lan
发明人： Chih-Chien Huang , Chien Ming Chen , Kuo-Pin Lan
IPC分类号： G11B7/00
CPC分类号： G11B7/005
摘要： A processing circuit for optical data is provided. The processing circuit includes a signal-processing module and a radio frequency (RF) signal-summing module. The signal-processing module averages and filters the data signals to obtain a low-frequency signal. The RF signal-summing module receives the data signals and the low-frequency signal, sums the data signals to obtain a summed data signal, and subtracts the low-frequency signal from the summed data signal to obtain a RF summing signal.
摘要翻译：提供了一种用于光学数据的处理电路。处理电路包括信号处理模块和射频（RF）信号求和模块。信号处理模块对数据信号进行平均和滤波以获得低频信号。 RF信号求和模块接收数据信号和低频信号，对数据信号进行求和以获得相加的数据信号，并从求和的数据信号中减去低频信号以获得RF求和信号。

10. 发明申请

US20080279075A1 DEVICE, METHOD FOR PROCESSING RF SIGNAL, AND OPTICAL DISK DRIVE UTILIZING THE SAME 有权
标题翻译：装置，RF信号的处理方法以及利用该信号的光盘驱动器
公开(公告)号：US20080279075A1
公开(公告)日：2008-11-13
申请号：US12028023
申请日：2008-02-08
申请人： Chih-Chien Huang , Chih-Ching Chen , Yuh Cheng , Chien Ming Chen
发明人： Chih-Chien Huang , Chih-Ching Chen , Yuh Cheng , Chien Ming Chen
IPC分类号： G11B20/10 , G11B7/00
CPC分类号： G11B20/10009 , G11B7/005 , G11B20/10027 , G11B20/10046 , H03H7/0153
摘要： A device for processing a radio frequency (RF) signal of an optical disk drive includes a high-pass (HP) filter, an RF variable gain amplifier (VGA), an RF analog-digital converter (ADC), and a digital module. The HP filter filters the RF signal and is capable of selectively utilizing one of a first cut-off frequency and a second cut-off frequency. The RF VGA amplifies the filtered RF signal. The RF ADC converts the amplified RF signal into a digital code. The digital module is capable of executing a first function and a second function with the digital code. The HP filter utilizes the first cut-off frequency when the digital module desires to execute the first function, and the HP filter utilizes the second cut-off frequency when the digital module desires to execute the second function.
摘要翻译：用于处理光盘驱动器的射频（RF）信号的装置包括高通（HP）滤波器，RF可变增益放大器（VGA），RF模数转换器（ADC）和数字模块。 HP滤波器对RF信号进行滤波，并且能够选择性地利用第一截止频率和第二截止频率中的一个。 RF VGA放大滤波后的RF信号。 RF ADC将放大的RF信号转换为数字码。数字模块能够利用数字代码执行第一功能和第二功能。当数字模块希望执行第一功能时，HP滤波器利用第一截止频率，当数字模块希望执行第二功能时，HP滤波器利用第二截止频率。

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