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1. 发明申请

US20100130149A1 INTEGRATED SQUELCH CIRCUIT WITH PROGRAMMABLE ENGAGEMENT THRESHOLD 有权
标题翻译：具有可编程接合阈值的集成式SQUELCH电路
公开(公告)号：US20100130149A1
公开(公告)日：2010-05-27
申请号：US12330473
申请日：2008-12-08
申请人： Pengfei Zhang , Caogang Yu
发明人： Pengfei Zhang , Caogang Yu
IPC分类号： H04B1/10
CPC分类号： H03G3/344
摘要： A method, system, and apparatus for squelching a signal in telecommunications systems. The apparatus includes a filter, two power detectors, a divider, two comparators, a logic gate, and a gain control block. The apparatus receives an input signal, and the power of the signal is detected. The input signal is also filtered to pass only the noise portion of the signal, and the power of the filtered signal is detected. A ratio between the filtered signal power and the input signal power is determined. A first comparator receives the filtered signal power and a second comparator receives the ratio of the filtered signal power and the input signal power. The logic gate receives the outputs from the first and second comparators. The gain control block receives as inputs the logic gate's output and the input signal to the apparatus. The gain control block may attenuate the input signal based on the logic gate's output. The gain control block generates the output signal of the apparatus.
摘要翻译：一种用于在电信系统中抑制信号的方法，系统和装置。该装置包括滤波器，两个功率检测器，分频器，两个比较器，逻辑门和增益控制块。该装置接收输入信号，并检测信号的功率。输入信号也被滤波以仅通过信号的噪声部分，并且检测滤波信号的功率。确定滤波后的信号功率与输入信号功率之间的比率。第一比较器接收滤波后的信号功率，第二比较器接收滤波后的信号功率与输入信号功率的比值。逻辑门接收来自第一和第二比较器的输出。增益控制块作为输入接收逻辑门的输出和到设备的输入信号。增益控制块可以基于逻辑门的输出衰减输入信号。增益控制块产生装置的输出信号。

2. 发明申请

US20090303980A1 APPARATUS AND METHOD FOR ERROR CONCEALMENT FOR A DIGITAL WIRELESS PHONE 有权
标题翻译：数字无线电话错误保护的装置和方法
公开(公告)号：US20090303980A1
公开(公告)日：2009-12-10
申请号：US12257185
申请日：2008-10-23
申请人： Weifeng Wang , Zhengheng Zhou , Caogang Yu
发明人： Weifeng Wang , Zhengheng Zhou , Caogang Yu
IPC分类号： H04B7/212 , H04B15/00
CPC分类号： H04L1/08 , H04L1/20
摘要： A method and system to conceal transmission errors in a digital wireless system is disclosed. The system is used in the uplink or the downlink of a cordless or wireless TDMA system. When there are unused data slots available, the system allocates redundant slots in a data frame to a single mobile unit. The receiving device calculates a quality of slot (QoS) score for each slot that it receives data for. After the QoS score is calculated, the system calculates a Quality of Audio Segment (QoAS) score for each individual segment. It does so by comparing the individual audio segments that were received. Segments that are identical are assigned a positive score, while segments that differ get no score. The QoAS for each segment is added to the QoS for the slot the segment was transmitted in to generate the total score. The system then chooses the segment with the highest total score. If the total score is above a specified threshold, the system outputs the segment to the next component. Otherwise, it outputs a mute segment.
摘要翻译：公开了一种在数字无线系统中隐藏传输错误的方法和系统。该系统用于无绳或无线TDMA系统的上行链路或下行链路。当有未使用的数据时隙可用时，系统将数据帧中的冗余时隙分配给单个移动单元。接收设备计算其接收数据的每个时隙的时隙（QoS）得分的质量。在计算QoS分数之后，系统计算每个单独段的音频段（QoAS）得分的质量。它通过比较收到的各个音频段来实现。相同的细分被分配一个积极的分数，而不同的分数没有得分。每个段的QoAS被添加到传输段的时隙的QoS中以产生总分。然后系统选择总分最高的段。如果总分高于指定的阈值，则系统将该段输出到下一个组件。否则，它输出静音段。

3. 发明授权

US08699722B2 Low cost noise floor reduction 有权
标题翻译：低成本噪音降低
公开(公告)号：US08699722B2
公开(公告)日：2014-04-15
申请号：US13176686
申请日：2011-07-05
申请人： Weifeng Wang , Caogang Yu
发明人： Weifeng Wang , Caogang Yu
IPC分类号： H04B15/00
CPC分类号： H04M9/08
摘要： A method and system to reduce the noise floor of a communications system is disclosed. The system may be incorporated into any device that provides binary samples from a datastream, such as a cordless telephone system. The system is configured to determine a number of bits of the binary samples that are affected by noise. The system is then able to remove the noise by setting those bits to a fixed value. The fixed value may depend on whether the sample is positive or negative. The value to set may be chosen so that the least significant bits of each sample come as close as possible to 0 for that particular numerical representation system. The system can be integrated with other known signal processing methods.
摘要翻译：公开了一种降低通信系统的本底噪声的方法和系统。该系统可以并入到从数据流（例如无绳电话系统）提供二进制样本的任何设备中。该系统被配置为确定受噪声影响的二进制样本的位数。然后，系统可以通过将这些位设置为固定值来消除噪声。固定值可能取决于样品是正还是负。可以选择要设置的值，使得对于该特定数值表示系统，每个样本的最低有效位尽可能接近0。该系统可以与其他已知的信号处理方法集成。

4. 发明申请

US20090304131A1 LOW COST NOISE FLOOR REDUCTION 有权
标题翻译：低成本噪音减少
公开(公告)号：US20090304131A1
公开(公告)日：2009-12-10
申请号：US12262106
申请日：2008-10-30
申请人： Weifeng Wang , Caogang Yu
发明人： Weifeng Wang , Caogang Yu
IPC分类号： H04B1/10
CPC分类号： H04M9/08
摘要： A method and system to reduce the noise floor of a communications system is disclosed. The system may be incorporated into any device that provides binary samples from a datastream, such as a cordless telephone system. The system is configured to determine a number of bits of the binary samples that are affected by noise. The system is then able to remove the noise by setting those bits to a fixed value. The fixed value may depend on whether the sample is positive or negative. The value to set may be chosen so that the least significant bits of each sample come as close as possible to 0 for that particular numerical representation system. The system can be integrated with other known signal processing methods.
摘要翻译：公开了一种降低通信系统的本底噪声的方法和系统。该系统可以并入到从数据流（例如无绳电话系统）提供二进制样本的任何设备中。该系统被配置为确定受噪声影响的二进制样本的位数。然后，系统可以通过将这些位设置为固定值来消除噪声。固定值可能取决于样品是正还是负。可以选择要设置的值，使得对于该特定数值表示系统，每个样本的最低有效位尽可能接近0。该系统可以与其他已知的信号处理方法集成。

5. 发明申请

US20120163506A1 GFSK MODULATOR AND A METHOD FOR REDUCING RESIDUAL FREQUENCY MODULATION AND A DIGITAL ENHANCED CORDLESS TELECOMMUNICATION TRANSMITTER INCLUDING THE GFSK MODULATOR 有权
标题翻译： GFSK调制器和减少残留频率调制的方法和包括GFSK调制器的数字增强型无线电信发射机
公开(公告)号：US20120163506A1
公开(公告)日：2012-06-28
申请号：US12981518
申请日：2010-12-30
申请人： Yiming Huang , Ronghui Kong , Caogang Yu
发明人： Yiming Huang , Ronghui Kong , Caogang Yu
IPC分类号： H04L27/14
CPC分类号： H03C3/04 , H03C3/0933 , H03C3/0941 , H03C3/0958 , H03C2200/0079
摘要： A GFSK modulator comprises: a first compensation module, configured to receive a GFSK pulse signal, apply a first amplitude compensation and a first delay compensation to the GFSK pulse signal, so as to generate a first compensated control signal; a second compensation module, configured to receive the GFSK pulse signal, apply a second amplitude compensation and a second delay compensation to the GFSK pulse signal, so as to generate a second compensated control signal; a closed-loop PLL module including a closed-loop PLL, configured to receive and use the first and the second compensated control signals to generate a modulated signal.
摘要翻译： GFSK调制器包括：第一补偿模块，被配置为接收GFSK脉冲信号，对GFSK脉冲信号施加第一幅度补偿和第一延迟补偿，以产生第一补偿控制信号; 第二补偿模块，被配置为接收所述GFSK脉冲信号，对所述GFSK脉冲信号施加第二幅度补偿和第二延迟补偿，以产生第二补偿控制信号; 包括闭环PLL的闭环PLL模块，被配置为接收和使用第一和第二补偿控制信号以产生调制信号。

6. 发明申请

US20110261975A1 LOW COST NOISE FLOOR REDUCTION 有权
标题翻译：低成本噪音减少
公开(公告)号：US20110261975A1
公开(公告)日：2011-10-27
申请号：US13176686
申请日：2011-07-05
申请人： Weifeng Wang , Caogang Yu
发明人： Weifeng Wang , Caogang Yu
IPC分类号： H04B15/02
CPC分类号： H04M9/08
摘要： A method and system to reduce the noise floor of a communications system is disclosed. The system may be incorporated into any device that provides binary samples from a datastream, such as a cordless telephone system. The system is configured to determine a number of bits of the binary samples that are affected by noise. The system is then able to remove the noise by setting those bits to a fixed value. The fixed value may depend on whether the sample is positive or negative. The value to set may be chosen so that the least significant bits of each sample come as close as possible to 0 for that particular numerical representation system. The system can be integrated with other known signal processing methods.
摘要翻译：公开了一种降低通信系统的本底噪声的方法和系统。该系统可以并入到从数据流（例如无绳电话系统）提供二进制样本的任何设备中。该系统被配置为确定受噪声影响的二进制样本的位数。然后，系统可以通过将这些位设置为固定值来消除噪声。固定值可能取决于样品是正还是负。可以选择要设置的值，使得对于该特定数值表示系统，每个样本的最低有效位尽可能接近0。该系统可以与其他已知的信号处理方法集成。

7. 发明申请

US20100119055A1 SYSTEMS AND METHODS FOR HALF-DUPLEX SPEAKERPHONES AND OTHER TWO-WAY COMMUNICATION DEVICES 有权
标题翻译：双平面扬声器和其他双向通讯装置的系统和方法
公开(公告)号：US20100119055A1
公开(公告)日：2010-05-13
申请号：US12272298
申请日：2008-11-17
申请人： Pengfei Zhang , Caogang Yu
发明人： Pengfei Zhang , Caogang Yu
IPC分类号： H04M9/08 , H04M1/00
CPC分类号： H04M9/08
摘要： An apparatus to enable half-duplexing capabilities in a two-way communication device is disclosed. The apparatus estimates the signal power and background noise of a first input signal and a second input signal during approximately the same period. The apparatus further provides at least one control signal based on the result of one or more determinations. These determinations may include whether the estimated signal power of at least one of the first and second input signals exceeds a threshold value; whether the estimated signal power of the first input signal exceeds the sum of a first threshold value and the estimated background noise of the first input signal; and whether the estimated signal power of the second input signal exceeds the sum of a second threshold value and the estimated background noise of the second input signal. Other embodiments for use with two-way communication devices and related methods are also disclosed.
摘要翻译：公开了一种在双向通信设备中实现半双工能力的设备。该装置在大约相同的周期期间估计第一输入信号和第二输入信号的信号功率和背景噪声。该装置还基于一个或多个确定的结果进一步提供至少一个控制信号。这些确定可以包括第一和第二输入信号中的至少一个的估计信号功率是否超过阈值; 第一输入信号的估计信号功率是否超过第一阈值和第一输入信号的估计背景噪声之和; 以及第二输入信号的估计信号功率是否超过第二阈值和第二输入信号的估计背景噪声之和。还公开了用于双向通信设备和相关方法的其它实施例。

8. 发明授权

US08098845B2 Low cost noise floor reduction 有权
标题翻译：低成本噪音降低
公开(公告)号：US08098845B2
公开(公告)日：2012-01-17
申请号：US12262106
申请日：2008-10-30
申请人： Weifeng Wang , Caogang Yu
发明人： Weifeng Wang , Caogang Yu
IPC分类号： H04B15/00
CPC分类号： H04M9/08
摘要： A method and system to reduce the noise floor of a communications system is disclosed. The system may be incorporated into any device that provides binary samples from a datastream, such as a cordless telephone system. The system is configured to determine a number of bits of the binary samples that are affected by noise. The system is then able to remove the noise by setting those bits to a fixed value. The fixed value may depend on whether the sample is positive or negative. The value to set may be chosen so that the least significant bits of each sample come as close as possible to 0 for that particular numerical representation system. The system can be integrated with other known signal processing methods.
摘要翻译：公开了一种降低通信系统的本底噪声的方法和系统。该系统可以并入到从数据流（例如无绳电话系统）提供二进制样本的任何设备中。该系统被配置为确定受噪声影响的二进制样本的位数。然后，系统可以通过将这些位设置为固定值来消除噪声。固定值可能取决于样品是正还是负。可以选择要设置的值，使得对于该特定数值表示系统，每个样本的最低有效位尽可能接近0。该系统可以与其他已知的信号处理方法集成。

9. 发明授权

US08090078B2 Systems and methods for half-duplex speakerphones and other two-way communication devices 有权
标题翻译：半双工免提电话和其他双向通信设备的系统和方法
公开(公告)号：US08090078B2
公开(公告)日：2012-01-03
申请号：US12272298
申请日：2008-11-17
申请人： Pengfei Zhang , Caogang Yu
发明人： Pengfei Zhang , Caogang Yu
IPC分类号： H04M1/24
CPC分类号： H04M9/08
摘要： An apparatus to enable half-duplexing capabilities in a two-way communication device is disclosed. The apparatus estimates the signal power and background noise of a first input signal and a second input signal during approximately the same period. The apparatus further provides at least one control signal based on the result of one or more determinations. These determinations may include whether the estimated signal power of at least one of the first and second input signals exceeds a threshold value; whether the estimated signal power of the first input signal exceeds the sum of a first threshold value and the estimated background noise of the first input signal; and whether the estimated signal power of the second input signal exceeds the sum of a second threshold value and the estimated background noise of the second input signal. Other embodiments for use with two-way communication devices and related methods are also disclosed.
摘要翻译：公开了一种在双向通信设备中实现半双工能力的设备。该装置在大约相同的周期期间估计第一输入信号和第二输入信号的信号功率和背景噪声。该装置还基于一个或多个确定的结果进一步提供至少一个控制信号。这些确定可以包括第一和第二输入信号中的至少一个的估计信号功率是否超过阈值; 第一输入信号的估计信号功率是否超过第一阈值和第一输入信号的估计背景噪声之和; 以及第二输入信号的估计信号功率是否超过第二阈值和第二输入信号的估计背景噪声之和。还公开了用于双向通信设备和相关方法的其它实施例。

10. 发明申请

US20090141869A1 APPARATUS AND METHOD FOR COMPARING SIGNAL STRENGTH IN A SPEAKERPHONE SYSTEM 审中-公开
标题翻译：用于比较扬声器系统中的信号强度的装置和方法
公开(公告)号：US20090141869A1
公开(公告)日：2009-06-04
申请号：US12262098
申请日：2008-10-30
申请人： Weifeng Wang , Caogang Yu
发明人： Weifeng Wang , Caogang Yu
IPC分类号： H04M1/24
CPC分类号： H04M9/08
摘要： A method and system for comparing signal strength in a speakerphone system is disclosed. The system is configured to operate in a half-duplex mode, where the direction of communication is determined by comparing signals based on the transmit input signal and the receive input signal. The system estimates and compares the transmit data signal strength and the receive data signal strength. The system then controls a transmit switch and a receive switch to selectively enable transmission based on the comparison. The system also reconfigures the estimation components based on the comparison of the estimated signal strengths. In one implementation, the system estimates the signal envelopes for the inputs and the envelopes of the noise components of the inputs. The system uses the estimates to calculate the data component of the input signals by subtracting the noise envelope from the total signal. A controller compares the strength signals to determine the current state of the system. If one signal is stronger than the other, the controller switches to that state and blocks the weaker signal. The system uses the states to configure the system components.
摘要翻译：公开了一种用于比较扬声器系统中的信号强度的方法和系统。该系统被配置为以半双工模式操作，其中通过基于发射输入信号和接收输入信号比较信号来确定通信方向。系统估计并比较发射数据信号强度和接收数据信号强度。该系统然后控制发射开关和接收开关，以便基于比较选择性地启用传输。该系统还基于估计信号强度的比较重新配置估计组件。在一个实现中，系统估计输入的信号包络和输入的噪声分量的包络。该系统使用估计来从总信号中减去噪声包络来计算输入信号的数据分量。控制器比较强度信号以确定系统的当前状态。如果一个信号比另一个信号更强，则控制器切换到该状态并阻止较弱的信号。系统使用这些状态来配置系统组件。

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