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1. 发明授权

US08184212B2 Sound intermediate frequency demodulator and sound intermediate frequency detecting method thereof 有权
标题翻译：声音中频解调器及其声频中频检测方法
公开(公告)号：US08184212B2
公开(公告)日：2012-05-22
申请号：US12510270
申请日：2009-07-28
申请人： Shih-Chuan Lu , Tien-Ju Tsai , Yen-Ming Lin
发明人： Shih-Chuan Lu , Tien-Ju Tsai , Yen-Ming Lin
IPC分类号： H04N5/60 , H04N7/00
CPC分类号： H04N5/60 , H04N5/605
摘要： A sound-IF demodulator including a first demodulating unit and a second demodulating unit and a sound-IF detecting method thereof are provided. A sound de-matrix unit is adapted to generate a driving signal by de-matrixing outputs of the sound-IF demodulator. The first demodulating unit generates a first demodulated signal to the sound de-matrix unit by demodulating the first carrier signal. The second demodulating unit detects the signal quality of the sound signal and generates a second demodulated signal to the sound de-matrix unit and/or the first demodulating unit by demodulating the second carrier signal. When the second demodulating unit is idle, the second demodulating unit is programmed to select a corresponding standard among a plurality of predetermined standards for the sound signal according to the signal quality of the sound signal, so that the sound-IF demodulator is programmed to demodulate the sound signal in the corresponding standard.
摘要翻译：提供了包括第一解调单元和第二解调单元以及声音IF检测方法的声音中频解调器。声音解矩阵单元适于通过对声 - IF解调器的输出进行去矩阵化来产生驱动信号。第一解调单元通过对第一载波信号进行解调来生成对声音去矩阵单元的第一解调信号。第二解调单元检测声音信号的信号质量，并通过对第二载波信号进行解调来产生第二解调信号给声音去矩阵单元和/或第一解调单元。当第二解调单元空闲时，第二解调单元被编程为根据声音信号的信号质量在声音信号的多个预定标准中选择相应的标准，使得声IF解调器被编程为解调声音信号在相应的标准。

2. 发明申请

US20090175385A1 Tolerable Synchronization Circuit of RDS Receiver 有权
标题翻译： RDS接收机的容限同步电路
公开(公告)号：US20090175385A1
公开(公告)日：2009-07-09
申请号：US11968659
申请日：2008-01-03
申请人： Tien-Ju Tsai , Chih-Feng Lin , Shih-Chuan Lu
发明人： Tien-Ju Tsai , Chih-Feng Lin , Shih-Chuan Lu
IPC分类号： H04L27/22
CPC分类号： H04H40/18 , H04H2201/13
摘要： A Radio Data System (RDS) decoder circuit determines a subcarrier frequency utilizing only a 57 kHz RDS signal of an FM broadcast signal. The RDS decoder includes a zero-intermediate frequency (zero-IF) FM demodulator, a first mixer, a low-pass filter (LPF) unit, a shaping filter unit, a carrier recovery circuit, a digitally controlled oscillator (DCO), a symbol timing recovery circuit, an integrate and dump circuit, a slicer 280, and a differential decoder. The carrier recovery circuit includes a phase error detector and a digital loop filter (DLF). The symbol timing recovery circuit includes a zero-crossing detector, a phase detector and loop filter unit, and a counter.
摘要翻译：无线电数据系统（RDS）解码器电路仅使用FM广播信号的57kHz RDS信号来确定副载波频率。 RDS解码器包括零中频（零中频）FM解调器，第一混频器，低通滤波器（LPF）单元，整形滤波器单元，载波恢复电路，数字振荡器（DCO），数字控制振荡器符号定时恢复电路，集成和转储电路，限幅器280和差分解码器。载波恢复电路包括相位误差检测器和数字环路滤波器（DLF）。符号定时恢复电路包括过零检测器，相位检测器和环路滤波器单元以及计数器。

3. 发明授权

US07907680B2 Tolerable synchronization circuit of RDS receiver 有权
标题翻译： RDS接收机的允许同步电路
公开(公告)号：US07907680B2
公开(公告)日：2011-03-15
申请号：US11968659
申请日：2008-01-03
申请人： Tien-Ju Tsai , Chih-Feng Lin , Shih-Chuan Lu
发明人： Tien-Ju Tsai , Chih-Feng Lin , Shih-Chuan Lu
IPC分类号： H03K9/00 , H04L27/00
CPC分类号： H04H40/18 , H04H2201/13
摘要： A Radio Data System (RDS) decoder circuit determines a subcarrier frequency utilizing only a 57 kHz RDS signal of an FM broadcast signal. The RDS decoder includes a zero-intermediate frequency (zero-IF) FM demodulator, a first mixer, a low-pass filter (LPF) unit, a shaping filter unit, a carrier recovery circuit, a digitally controlled oscillator (DCO), a symbol timing recovery circuit, an integrate and dump circuit, a slicer 280, and a differential decoder. The carrier recovery circuit includes a phase error detector and a digital loop filter (DLF). The symbol timing recovery circuit includes a zero-crossing detector, a phase detector and loop filter unit, and a counter.
摘要翻译：无线电数据系统（RDS）解码器电路仅使用FM广播信号的57kHz RDS信号来确定副载波频率。 RDS解码器包括零中频（零中频）FM解调器，第一混频器，低通滤波器（LPF）单元，整形滤波器单元，载波恢复电路，数字振荡器（DCO），数字控制振荡器符号定时恢复电路，集成和转储电路，限幅器280和差分解码器。载波恢复电路包括相位误差检测器和数字环路滤波器（DLF）。符号定时恢复电路包括过零检测器，相位检测器和环路滤波器单元以及计数器。

4. 发明申请

US20070036445A1 Method and apparatus of efficient lossless data stream coding 审中-公开
标题翻译：高效无损数据流编码的方法和装置
公开(公告)号：US20070036445A1
公开(公告)日：2007-02-15
申请号：US11205301
申请日：2005-08-15
申请人： Shih-Chuan Lu , Wei-Ting Jwo
发明人： Shih-Chuan Lu , Wei-Ting Jwo
IPC分类号： G06K9/36
CPC分类号： H04N19/91
摘要： The present invention provides method of lossless data stream coding with high coding efficiency. The differential value of adjacent samples are calculated firstly and is coded by a VLC coding, the variable length coding. The VLC coding includes codes representing the quotient and remainder with a marker bit inserted in between. The divider is implicitly encoded and decoded with no code in the coded data stream. For pursuing high performance, at least two VLC encoder and VLD decoder are adopted to encode and decode the samples with one input from one location of the data stream and another input from another location of the data stream and the results saving from one location of the storage device and another result of data stream saving from another location of the storage device.
摘要翻译：本发明提供了具有高编码效率的无损数据流编码方法。首先计算相邻样本的差分值，并通过可变长度编码的VLC编码进行编码。 VLC编码包括代表商的代码和具有插入其间的标记位的余数。分割器在编码数据流中没有代码被隐式编码和解码。为了追求高性能，采用至少两个VLC编码器和VLD解码器对来自数据流的一个位置的一个输入和来自数据流的另一个位置的另一个输入的一个输入进行编码和解码，并且从存储设备和从存储设备的另一位置节省数据流的另一结果。

5. 发明授权

US08090110B2 Method and apparatus for determining sound standard for input sound signal 有权
标题翻译：用于确定输入声音信号的声音标准的方法和装置
公开(公告)号：US08090110B2
公开(公告)日：2012-01-03
申请号：US12081745
申请日：2008-04-21
申请人： Tien-Ju Tsai , Shih-Chuan Lu , Shu-Ming Liu
发明人： Tien-Ju Tsai , Shih-Chuan Lu , Shu-Ming Liu
IPC分类号： H04R29/00
CPC分类号： H04N5/60 , H04N5/46 , H04N21/4394
摘要： A method for determining a sound standard for an input sound signal includes the following steps. Firstly, the input sound signal is filtered to obtain a first filtered signal corresponding to a first frequency and a second filtered signal corresponding to a second frequency. Next, the first filtered signal is frequency-demodulated to obtain a first demodulated filtered signal, and whether the input sound signal contains a FM analog component corresponding to the first frequency is determined accordingly. Next, the second filtered signal is decoded according to a digital sound standard to obtain a bit stream. Then, the bit steam is interpreted according to the digital sound standard, and whether the input sound contains a digital component corresponding to the digital sound standard is determined accordingly. Then, whether the input sound signal matches one of known sound standards is determined based on the determined results above.
摘要翻译：用于确定输入声音信号的声音标准的方法包括以下步骤。首先，对输入声音信号进行滤波以获得对应于第一频率的第一滤波信号和对应于第二频率的第二滤波信号。接下来，对第一滤波信号进行频率解调以获得第一解调滤波信号，并且相应地确定输入声音信号是否包含与第一频率相对应的FM模拟分量。接下来，根据数字声音标准对第二滤波信号进行解码以获得比特流。然后，根据数字声音标准解释位蒸汽，并且相应地确定输入声音是否包含与数字声音标准相对应的数字分量。然后，基于上述确定的结果来确定输入声音信号是否与已知声音标准中的一个匹配。

6. 发明授权

US07995980B2 Automatic gain control apparatus and method 有权
标题翻译：自动增益控制装置及方法
公开(公告)号：US07995980B2
公开(公告)日：2011-08-09
申请号：US12420059
申请日：2009-04-08
申请人： Shih-Chuan Lu
发明人： Shih-Chuan Lu
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H03G3/3068 , H03G3/3078 , H04B1/26
摘要： An automatic gain control apparatus includes a first comparing module, a counting module, a second comparing module, and a control module. The first comparing module compares an input signal with a first threshold level and a second threshold level to generate a first compared output signal and a second compared output signal respectively. The counting module performs counting operations upon the first compared output signal and the second compared output signal to generate a first counting number and a second counting number respectively. The second comparing module compares the first counting number with a first threshold number to generate a first detection signal and compares the second counting number with a second threshold number to generate a second detection signal. The control module controls the gain of a radio frequency amplifier or an intermediate frequency amplifier according to the first detection signal and the second detection signal.
摘要翻译：一种自动增益控制装置，包括第一比较模块，计数模块，第二比较模块和控制模块。第一比较模块将输入信号与第一阈值电平和第二阈值电平进行比较，分别产生第一比较输出信号和第二比较输出信号。计数模块对第一比较输出信号和第二比较输出信号执行计数操作，分别产生第一计数号和第二计数号。第二比较模块将第一计数数与第一阈值进行比较以产生第一检测信号，并将第二计数数与第二阈值进行比较以产生第二检测信号。控制模块根据第一检测信号和第二检测信号来控制射频放大器或中频放大器的增益。

7. 发明申请

US20090238198A1 Packing Switching System and Method 审中-公开
标题翻译：包装切换系统和方法
公开(公告)号：US20090238198A1
公开(公告)日：2009-09-24
申请号：US12052692
申请日：2008-03-20
申请人： Sheng-Chun Niu , Fang-Chen Chang , Shih-Chuan Lu , Ling-Hsiu Huang
发明人： Sheng-Chun Niu , Fang-Chen Chang , Shih-Chuan Lu , Ling-Hsiu Huang
IPC分类号： H04L12/56
CPC分类号： H04N19/42
摘要： A packing switching system and method is disclosed. A pipelined processor processes image pixels to generate a number of bit streams. Subsequently, a packing unit packs the bit streams into packets in a way that the bit stream or streams with minimum pixel order number are packed before other bit stream or streams.
摘要翻译：公开了包装切换系统和方法。流水线处理器处理图像像素以生成多个位流。随后，打包单元以比特流或具有最小像素顺序号的流在其它比特流或流之前打包的方式将比特流打包成分组。

8. 发明申请

US20100261447A1 AUTOMATIC GAIN CONTROL APPARATUS AND METHOD 有权
标题翻译：自动增益控制装置及方法
公开(公告)号：US20100261447A1
公开(公告)日：2010-10-14
申请号：US12420059
申请日：2009-04-08
申请人： Shih-Chuan Lu
发明人： Shih-Chuan Lu
IPC分类号： H04B1/06
CPC分类号： H03G3/3068 , H03G3/3078 , H04B1/26
摘要： An automatic gain control apparatus includes a first comparing module, a counting module, a second comparing module, and a control module. The first comparing module compares an input signal with a first threshold level and a second threshold level to generate a first compared output signal and a second compared output signal respectively. The counting module performs counting operations upon the first compared output signal and the second compared output signal to generate a first counting number and a second counting number respectively. The second comparing module compares the first counting number with a first threshold number to generate a first detection signal and compares the second counting number with a second threshold number to generate a second detection signal. The control module controls the gain of a radio frequency amplifier or an intermediate frequency amplifier according to the first detection signal and the second detection signal.
摘要翻译：一种自动增益控制装置，包括第一比较模块，计数模块，第二比较模块和控制模块。第一比较模块将输入信号与第一阈值电平和第二阈值电平进行比较，分别产生第一比较输出信号和第二比较输出信号。计数模块对第一比较输出信号和第二比较输出信号执行计数操作，分别产生第一计数号和第二计数号。第二比较模块将第一计数数与第一阈值进行比较以产生第一检测信号，并将第二计数数与第二阈值进行比较以产生第二检测信号。控制模块根据第一检测信号和第二检测信号来控制射频放大器或中频放大器的增益。

9. 发明申请

US20100240334A1 Broadcast Receiver and Method for Regulating the Same 有权
标题翻译：广播接收机及其调节方法
公开(公告)号：US20100240334A1
公开(公告)日：2010-09-23
申请号：US12409029
申请日：2009-03-23
申请人： Shin-Shiuan Cheng , Guo-Hau Gau , Shan-Tsung Wu , Shih-Chuan Lu , Tien-Ju Tsai
发明人： Shin-Shiuan Cheng , Guo-Hau Gau , Shan-Tsung Wu , Shih-Chuan Lu , Tien-Ju Tsai
IPC分类号： H04B1/18
CPC分类号： H03G3/3068 , H04H60/43
摘要： A broadcast receiver includes a tuner circuit and a demodulator circuit. The tuner circuit tunes a radio frequency (RF) signal to output an intermediate frequency (IF) signal. The demodulator circuit demodulates the IF signal from the tuner circuit and outputs a command signal based on the quality of the IF signal, for changing a take over point (TOP) value, preset in the tuner circuit, at which one amplitude gain control (AGC) stopping and another taking over. A method for regulating a broadcast receiver is also disclosed herein.
摘要翻译：广播接收机包括调谐器电路和解调器电路。调谐器电路调谐射频（RF）信号以输出中频（IF）信号。解调器电路解调来自调谐器电路的IF信号，并且基于IF信号的质量输出命令信号，以改变在调谐器电路中预设的接收点（TOP）值，其中一个幅度增益控制（AGC ）停止和另一个接管。本文还公开了一种用于调节广播接收机的方法。

10. 发明申请

US20090262246A1 Method and apparatus for determining sound standard for input sound signal 有权
标题翻译：用于确定输入声音信号的声音标准的方法和装置
公开(公告)号：US20090262246A1
公开(公告)日：2009-10-22
申请号：US12081745
申请日：2008-04-21
申请人： Tien-Ju Tsai , Shih-Chuan Lu , Shu-Ming Liu
发明人： Tien-Ju Tsai , Shih-Chuan Lu , Shu-Ming Liu
IPC分类号： H04N5/14
CPC分类号： H04N5/60 , H04N5/46 , H04N21/4394
摘要： A method for determining a sound standard for an input sound signal includes the following steps. Firstly, the input sound signal is filtered to obtain a first filtered signal corresponding to a first frequency and a second filtered signal corresponding to a second frequency. Next, the first filtered signal is frequency-demodulated to obtain a first demodulated filtered signal, and whether the input sound signal contains a FM analog component corresponding to the first frequency is determined accordingly. Next, the second filtered signal is decoded according to a digital sound standard to obtain a bit stream. Then, the bit steam is interpreted according to the digital sound standard, and whether the input sound contains a digital component corresponding to the digital sound standard is determined accordingly. Then, whether the input sound signal matches one of known sound standards is determined based on the determined results above.
摘要翻译：用于确定输入声音信号的声音标准的方法包括以下步骤。首先，对输入声音信号进行滤波以获得对应于第一频率的第一滤波信号和对应于第二频率的第二滤波信号。接下来，对第一滤波信号进行频率解调以获得第一解调滤波信号，并且相应地确定输入声音信号是否包含与第一频率相对应的FM模拟分量。接下来，根据数字声音标准对第二滤波信号进行解码以获得比特流。然后，根据数字声音标准解释位蒸汽，并且相应地确定输入声音是否包含与数字声音标准相对应的数字分量。然后，基于上述确定的结果来确定输入声音信号是否与已知声音标准中的一个匹配。

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