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1. 发明授权

US08094836B2 Multi-channel decoding systems capable of reducing noise and methods thereof 有权
标题翻译：能够降低噪声的多声道解码系统及其方法
公开(公告)号：US08094836B2
公开(公告)日：2012-01-10
申请号：US12099159
申请日：2008-04-08
申请人： Chieh-Hung Chen , Tsung-Ling Li , Chia-Huang Fu
发明人： Chieh-Hung Chen , Tsung-Ling Li , Chia-Huang Fu
IPC分类号： H04R5/00 , H04B15/00
CPC分类号： H04H40/81
摘要： A multi-channel decoding method includes: receiving an input signal to generate a first channel output signal and a second channel output signal, wherein the input signal is mixed with a specific clock signal; and gradually changing an amplitude of the specific clock signal from a first value to a second value when switching from a first mode corresponding to a first number of channels to a second mode corresponding to a second number of channels. Systems utilizing the method and another method further comprising calibration are also disclosed.
摘要翻译：多通道解码方法包括：接收输入信号以产生第一通道输出信号和第二通道输出信号，其中输入信号与特定时钟信号混合; 以及当从对应于第一数量的信道的第一模式切换到对应于第二数量信道的第二模式时，将特定时钟信号的幅度从第一值逐渐改变为第二值。还公开了利用该方法的系统和还包括校准的另一种方法。

2. 发明申请

US20090252337A1 MULTI-CHANNEL DECODING SYSTEMS CAPABLE OF REDUCING NOISE AND METHODS THEREOF 有权
标题翻译：可减少噪声的多通道解码系统及其方法
公开(公告)号：US20090252337A1
公开(公告)日：2009-10-08
申请号：US12099159
申请日：2008-04-08
申请人： Chieh-Hung Chen , Tsung-Ling Li , Chia-Huang Fu
发明人： Chieh-Hung Chen , Tsung-Ling Li , Chia-Huang Fu
IPC分类号： H04R5/00 , H04B15/00 , H04R29/00
CPC分类号： H04H40/81
摘要： A multi-channel decoding method includes: receiving an input signal to generate a first channel output signal and a second channel output signal, wherein the input signal is mixed with a specific clock signal; and gradually changing an amplitude of the specific clock signal from a first value to a second value when switching from a first mode corresponding to a first number of channels to a second mode corresponding to a second number of channels. Systems utilizing the method and another method further comprising calibration are also disclosed.
摘要翻译：多通道解码方法包括：接收输入信号以产生第一通道输出信号和第二通道输出信号，其中输入信号与特定时钟信号混合; 以及当从对应于第一数量信道的第一模式切换到对应于第二数量信道的第二模式时，将特定时钟信号的幅度从第一值逐渐改变为第二值。还公开了利用该方法的系统和还包括校准的另一种方法。

3. 发明申请

US20090232316A1 MULTI-CHANNEL BLEND SYSTEM FOR CALIBRATING SEPARATION RATIO BETWEEN CHANNEL OUTPUT SIGNALS AND METHOD THEREOF 审中-公开
标题翻译：用于校准信道输出信号之间的分离比例的多通道混合系统及其方法
公开(公告)号：US20090232316A1
公开(公告)日：2009-09-17
申请号：US12048225
申请日：2008-03-14
申请人： Chieh-Hung Chen
发明人： Chieh-Hung Chen
IPC分类号： H04R5/00
CPC分类号： H04S7/301 , H04S2400/01
摘要： A multi-channel blend system includes a calibration circuit and a decoding circuit having a gain amplifying module. The decoding circuit is utilized for receiving an input signal to generate a first channel output signal and a second channel output signal. The gain amplifying module is utilized for providing a gain value for determining a separation ratio between the first channel output signal and the second channel output signal according to a calibration signal. The calibration circuit is utilized for providing a predetermined test signal serving as the input signal so as to generate the calibration signal according to at least one of the first and second channel output signals generated from the predetermined test signal.
摘要翻译：多通道混合系统包括校准电路和具有增益放大模块的解码电路。解码电路用于接收输入信号以产生第一通道输出信号和第二通道输出信号。增益放大模块用于根据校准信号提供用于确定第一通道输出信号和第二通道输出信号之间的分离比的增益值。校准电路用于提供用作输入信号的预定测试信号，以便根据从预定测试信号产生的第一和第二通道输出信号中的至少一个产生校准信号。

4. 发明申请

US20090156146A1 DUTY-TO-VOLTAGE AMPLIFIER, FM RECEIVER AND METHOD FOR AMPLIFYING A PEAK OF A MULTIPLEXED SIGNAL 有权
标题翻译：负载电压放大器，FM接收器和用于放大多路复用信号峰值的方法
公开(公告)号：US20090156146A1
公开(公告)日：2009-06-18
申请号：US12372403
申请日：2009-02-17
申请人： Hsiang-Hui CHANG , Chieh Hung CHEN
发明人： Hsiang-Hui CHANG , Chieh Hung CHEN
IPC分类号： H04B1/16
CPC分类号： H03F3/217
摘要： A FM receiver comprises an IF filter, a demodulator and a decoder. The IF filter generates an RSSI and a FM modulated signal in response to a FM signal. The demodulator comprises a duty-to-voltage amplifier for amplifying a peak of a MPX signal. The duty-to-voltage amplifier comprises a current source, a switch and a current splitter. The current source generates a current. The switch controls a flow of the first current in response to a PWM signal. The current splitter splits the flow of the current into a sub-flow in response to the RSSI. The peak of the MPX signal is proportional to the sub-flow. The decoder receives the MPX signal to generate an audio signal to play sound.
摘要翻译： FM接收机包括IF滤波器，解调器和解码器。 IF滤波器响应于FM信号产生RSSI和FM调制信号。解调器包括用于放大MPX信号的峰值的占空比电压放大器。负载电压放大器包括电流源，开关和电流分配器。电流源产生电流。开关控制响应于PWM信号的第一电流的流动。当前的分流器响应于RSSI将电流的流分解成子流。 MPX信号的峰值与子流量成正比。解码器接收MPX信号以产生音频信号以播放声音。

5. 发明授权

US07957698B2 Demodulator with output level calibration 有权
标题翻译：具有输出电平校准的解调器
公开(公告)号：US07957698B2
公开(公告)日：2011-06-07
申请号：US12045707
申请日：2008-03-11
申请人： Tsung-Ling Li , Hsiang-Hui Chang , Chia-Huang Fu , En-Hsiang Yeh , Hsueh-Kun Liao , Chieh-Hung Chen
发明人： Tsung-Ling Li , Hsiang-Hui Chang , Chia-Huang Fu , En-Hsiang Yeh , Hsueh-Kun Liao , Chieh-Hung Chen
IPC分类号： H04B17/00 , H04B1/16
CPC分类号： H04B17/0085 , H04B17/20 , H04B17/21 , H04B17/318
摘要： 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.
摘要翻译：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。

6. 发明授权

US06853323B1 Differential voltage output digital-to-analog converter 有权
标题翻译：差分电压输出数模转换器
公开(公告)号：US06853323B1
公开(公告)日：2005-02-08
申请号：US10838754
申请日：2004-05-04
申请人： Yi-Huei Chen , Po-Chiun Huang , Chieh-Hung Chen
发明人： Yi-Huei Chen , Po-Chiun Huang , Chieh-Hung Chen
IPC分类号： H03M1/06 , H03M1/66 , H03M1/68 , H03M1/74
CPC分类号： H03M1/0678 , H03M1/685 , H03M1/747
摘要： A digital-to-analog converter (DAC) for use in high-speed wireless communications. The DAC of the invention comprises a plurality of current steering cells to bi-directionally provide a differential current output. When the DAC sets the differential current output to zero for example, each of the current steering cells establishes dummy branches between a pair of current sources and thereby prevents the current sources from floating. This in turn enables the DAC to operate with a higher update rate.
摘要翻译：用于高速无线通信的数模转换器（DAC）。本发明的DAC包括多个电流导向单元，以双向提供差分电流输出。当DAC将差分电流输出设置为零时，每个当前导向单元在一对电流源之间建立虚拟分支，从而防止电流源浮动。这反过来使DAC能够以更高的更新速率运行。

7. 发明授权

US08559653B2 Multi-channel decoding systems capable of reducing noise and methods thereof 有权
标题翻译：能够降低噪声的多声道解码系统及其方法
公开(公告)号：US08559653B2
公开(公告)日：2013-10-15
申请号：US13309524
申请日：2011-12-01
申请人： Chieh-Hung Chen , Tsung-Ling Li , Chia-Huang Fu
发明人： Chieh-Hung Chen , Tsung-Ling Li , Chia-Huang Fu
IPC分类号： H04R5/00 , H04B15/00
CPC分类号： H04H40/81
摘要： A multi-channel decoding method includes: receiving an input signal to generate a channel output signal; providing a first test signal serving as the input signal in a first calibration mode; and adjusting a DC voltage level of the channel output signal with a first calibration signal by reducing a difference between a first predetermined reference signal level and a DC voltage level of the channel output signal generated from the first test signal.
摘要翻译：多信道解码方法包括：接收输入信号以产生信道输出信号; 在第一校准模式中提供用作所述输入信号的第一测试信号; 以及通过减小从所述第一测试信号产生的所述通道输出信号的第一预定参考信号电平和DC电压电平之间的差来调整具有第一校准信号的所述通道输出信号的直流电压电平。

8. 发明授权

US08331890B2 Duty-to-voltage amplifier, FM receiver and method for amplifying a peak of a multiplexed signal 有权
标题翻译：负载电压放大器，FM接收器和用于放大多路复用信号的峰值的方法
公开(公告)号：US08331890B2
公开(公告)日：2012-12-11
申请号：US12372403
申请日：2009-02-17
申请人： Hsiang-Hui Chang , Chieh Hung Chen
发明人： Hsiang-Hui Chang , Chieh Hung Chen
IPC分类号： H04B1/16
CPC分类号： H03F3/217
摘要： A FM receiver comprises an IF filter, a demodulator and a decoder. The IF filter generates an RSSI and a FM modulated signal in response to a FM signal. The demodulator comprises a duty-to-voltage amplifier for amplifying a peak of a MPX signal. The duty-to-voltage amplifier comprises a current source, a switch and a current splitter. The current source generates a current. The switch controls a flow of the first current in response to a PWM signal. The current splitter splits the flow of the current into a sub-flow in response to the RSSI. The peak of the MPX signal is proportional to the sub-flow. The decoder receives the MPX signal to generate an audio signal to play sound.
摘要翻译： FM接收机包括IF滤波器，解调器和解码器。 IF滤波器响应于FM信号产生RSSI和FM调制信号。解调器包括用于放大MPX信号的峰值的占空比电压放大器。负载电压放大器包括电流源，开关和电流分配器。电流源产生电流。开关控制响应于PWM信号的第一电流的流动。当前的分流器响应于RSSI将电流的流分解成子流。 MPX信号的峰值与子流量成正比。解码器接收MPX信号以产生音频信号以播放声音。

9. 发明申请

US20120076309A1 MULTI-CHANNEL DECODING SYSTEMS CAPABLE OF REDUCING NOISE AND METHODS THEREOF 有权
标题翻译：可减少噪声的多通道解码系统及其方法
公开(公告)号：US20120076309A1
公开(公告)日：2012-03-29
申请号：US13309524
申请日：2011-12-01
申请人： Chieh-Hung Chen , Tsung-Ling Li , Chia-Huang Fu
发明人： Chieh-Hung Chen , Tsung-Ling Li , Chia-Huang Fu
IPC分类号： H04R5/00
CPC分类号： H04H40/81
摘要： A multi-channel decoding method includes: receiving an input signal to generate a channel output signal; providing a first test signal serving as the input signal in a first calibration mode; and adjusting a DC voltage level of the channel output signal with a first calibration signal by reducing a difference between a first predetermined reference signal level and a DC voltage level of the channel output signal generated from the first test signal.
摘要翻译：多信道解码方法包括：接收输入信号以产生信道输出信号; 在第一校准模式中提供用作所述输入信号的第一测试信号; 以及通过减小从所述第一测试信号产生的所述通道输出信号的第一预定参考信号电平和DC电压电平之间的差来调整具有第一校准信号的所述通道输出信号的直流电压电平。

10. 发明授权

US08144878B2 FM receiver and pilot detector thereof, and method for determining a type of a processed signal 有权
标题翻译： FM接收机及其导频检测器，以及用于确定处理信号的类型的方法
公开(公告)号：US08144878B2
公开(公告)日：2012-03-27
申请号：US11369067
申请日：2006-03-06
申请人： Chieh Hung Chen
发明人： Chieh Hung Chen
IPC分类号： H04H5/00
CPC分类号： H04H40/45
摘要： An FM receiver and a pilot detector thereof, and a method for determining a type of a processed signal are provided. The FM receiver comprises a demodulator, a band pass filter (BPF), and a pilot detector. The demodulator generates a multiplexed (MPX) signal. The BPF filters the MPX signal to generate a pilot signal. The pilot detector comprises a signal addition device and a comparator. The signal addition device adds the processed signal for a period of time and to generate a result signal in response to the addition. The comparator compares the result signal with a reference to determine whether the type is stereo. The method comprises the steps of: adding the processed signal for a period of time; generating a result signal in response to the addition; and comparing the result signal with a reference to determine whether the type is stereo.
摘要翻译：提供FM接收机及其导频检测器，以及用于确定处理信号的类型的方法。 FM接收机包括解调器，带通滤波器（BPF）和导频检测器。解调器产生复用（MPX）信号。 BPF对MPX信号进行滤波以产生导频信号。导频检测器包括信号添加装置和比较器。信号添加装置将经处理的信号添加一段时间，并且响应于添加而产生结果信号。比较器将结果信号与参考值进行比较，以确定该类型是立体声。该方法包括以下步骤：将经处理的信号添加一段时间; 响应于所述相加产生结果信号; 并将结果信号与参考进行比较，以确定该类型是立体声。

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