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11. 发明授权

US09990937B1 Device and method for synchronizing speakers 有权
公开(公告)号：US09990937B1
公开(公告)日：2018-06-05
申请号：US15384312
申请日：2016-12-19
申请人： Beken Corporation
发明人： Wenxing Tu , Xiaoyan He
IPC分类号： H04R29/00 , G10L21/043 , H04R3/12 , H04R3/04
CPC分类号： G10L21/043 , H04R3/12 , H04R2420/07
摘要： A first speaker, comprising: a receiver configured to receive, from a second speaker, a second runtime and a second number of audio samples when the first speaker plays an audio file synchronized with the second speaker; a calculator configured to calculate a time interval value based on the second runtime; a generator configured to generate a revised second number of audio samples based on the time interval value; a comparator configured to compare a difference between the revised second number of audio samples and a first number of audio samples of the first speaker so as to determine the amount of latency of the first speaker; an adjustor configured to adjust a playing speed of the first speaker; and an output configured to output the audio file according to the adjusted playing speed.

12. 发明申请

US20180115285A1 METHOD AND CIRCUIT FOR SUPPRESSING POP NOISE IN AN AUDIO OPERATION AMPLIFIER 有权
公开(公告)号：US20180115285A1
公开(公告)日：2018-04-26
申请号：US15347799
申请日：2016-11-10
申请人： Beken Corporation
发明人： Donghui GAO , Jiazhou LIU , Dawei GUO
IPC分类号： H03F1/26 , H03F3/185 , H03F3/21 , H03F3/45 , H03F1/34
CPC分类号： H03F1/26 , H03F1/0277 , H03F1/305 , H03F1/342 , H03F3/185 , H03F3/21 , H03F3/303 , H03F3/45179 , H03F3/45183 , H03F3/72 , H03F2200/03 , H03F2203/30078 , H03F2203/30111 , H03F2203/45151
摘要： A method for suppressing POP noise in an audio operation amplifier, comprising: connecting a first resistor and a second resistor in series at an output stage of the audio operation amplifier by turning on a first switch and a second switch; generating, with a ramp generator, a ramp voltage after an audio signal is input into the audio operation amplifier, wherein the ramp voltage varies from zero to a first value; generating, with an voltage generator, a second voltage, wherein a third switch is turned on and a fourth switch is turned off when the ramp voltage reaches the second value; short-circuiting the first and second resistors by turning off the first and second switches; and outputting, with the audio operation amplifier, an amplified audio signal.

13. 发明申请

US20160358613A1 WIRELESS DEVICE AND METHOD IN THE WIRELESS DEVICE 审中-公开
标题翻译：无线设备中的无线设备和方法
公开(公告)号：US20160358613A1
公开(公告)日：2016-12-08
申请号：US14746851
申请日：2015-06-23
申请人： Beken Corporation
发明人： Weifeng Wang , Yiming Huang
IPC分类号： G10L19/00 , G10H1/36 , G10L21/055
CPC分类号： G10H1/366 , G10H1/361 , G10H2240/211 , G10H2250/595 , G10L19/167 , H04B1/66
摘要： A transmitter comprises an analog-to-digital converter, an audio signal compressor, a framer, a scrambler, a modulator, and a transmitting unit. The analog-to-digital converter translates an analog audio signal into a digital Pulse-Code Modulation (PCM) format audio signal. The audio signal compressor compresses the PCM format audio signal into a coded bit stream with a modified Adaptive differential Pulse-code Modulation (ADPCM) algorithm. The framer packetizes the coded bit stream into a 1.125 ms frame data by adding a preamble, a signaling field, a data field, and a cyclic redundancy check field to the coded bit stream. The scrambler scrambles the frame data with an ID number. The modulator generates a modulated signal by modulating the scrambled frame data with a predetermined modulation scheme. The transmitting unit transmits the modulated signal.
摘要翻译：发射机包括模数转换器，音频信号压缩器，成帧器，加扰器，调制器和发射单元。模数转换器将模拟音频信号转换为数字脉冲编码调制（PCM）格式的音频信号。音频信号压缩器通过修改的自适应差分脉冲编码调制（ADPCM）算法将PCM格式音频信号压缩成编码比特流。成帧器通过向编码比特流添加前导码，信令字段，数据字段和循环冗余校验字段来将编码比特流分组为1.125ms帧数据。加扰器用ID号码对帧数据进行加扰。调制器通过以预定的调制方式调制加扰的帧数据来产生调制信号。发送单元发送调制信号。

14. 发明授权

US09455675B2 Amplifier and amplification method 有权
标题翻译：放大器和放大方法
公开(公告)号：US09455675B2
公开(公告)日：2016-09-27
申请号：US14554001
申请日：2014-11-25
申请人： Beken Corporation
发明人： Ronghui Kong , Dawei Guo
IPC分类号： H03F3/04 , H03F3/30 , H03F1/30 , H03K3/3565
CPC分类号： H03F3/3022 , H03F1/308 , H03F2200/135 , H03F2200/456 , H03F2200/555 , H03F2203/30031 , H03F2203/30078 , H03K3/3565
摘要： An amplifier comprises a biasing unit, an amplifying unit and a Schmitt trigger. The biasing unit is configured to generate a bias current which is independent of the power supply, so as to increase power supply rejection ratio. The amplifying unit is connected to the biasing unit and configured to receive an input voltage and generate an amplified voltage based on the biasing current. The Schmitt trigger is connected to the amplifier and configured to generate and output a modified voltage.
摘要翻译：放大器包括偏置单元，放大单元和施密特触发器。偏压单元被配置为产生独立于电源的偏置电流，从而增加电源抑制比。放大单元连接到偏置单元并且被配置为接收输入电压并且基于偏置电流产生放大的电压。施密特触发器连接到放大器，并配置为产生和输出修改的电压。

15. 发明授权

US09407425B1 Method and device for compensating phase imbalance 有权
标题翻译：补偿相位不平衡的方法和装置
公开(公告)号：US09407425B1
公开(公告)日：2016-08-02
申请号：US14730205
申请日：2015-06-03
申请人： Beken Corporation
发明人： Yiming Huang , Weifeng Wang
IPC分类号： H04L7/00 , H04L7/027
CPC分类号： H04L27/364
摘要： A method of compensating phase imbalance comprises, detecting power outputs of a first output signal related to a first phase compensation value and of a second output signal related to a second phase compensation value; calculating a first absolute difference between an in-phase value and a quadrature value of the power output of the first output signal; calculating a second absolute difference between an in-phase value and a quadrature value of the power output of the second output signal; determining a minimum difference by comparing the first absolute difference with the second absolute difference; determining an optimal phase compensation value and a suboptimal phase compensation value from the first and the second phase compensation values according to the minimum difference; and obtaining an updated optimal phase compensation value with a binary search algorithm.
摘要翻译：一种补偿相位不平衡的方法包括：检测与第一相位补偿值相关的第一输出信号的功率输出和与第二相位补偿值相关的第二输出信号; 计算第一输出信号的功率输出的同相值和正交值之间的第一绝对差; 计算第二输出信号的功率输出的同相值和正交值之间的第二绝对差; 通过将所述第一绝对差与所述第二绝对差进行比较来确定最小差; 根据最小差从第一和第二相位补偿值确定最佳相位补偿值和次最佳相位补偿值; 并用二进制搜索算法获得更新的最佳相位补偿值。

16. 发明申请

US20160156313A1 OPERATIONAL AMPLIFIER AND METHOD OF OPERATING THE OPERATIONAL AMPLIFIER 有权
标题翻译：操作放大器及操作放大器的操作方法
公开(公告)号：US20160156313A1
公开(公告)日：2016-06-02
申请号：US14585190
申请日：2014-12-30
申请人： Beken Corporation
发明人： Jiazhou LIU , Dawei GUO
IPC分类号： H03F1/02 , H03F3/21 , H03F3/45 , H03F3/217
CPC分类号： H03F1/0205 , H03F1/0277 , H03F3/211 , H03F3/2171 , H03F3/45179 , H03F3/4521 , H03F2203/21109 , H03F2203/45116 , H03F2203/45288
摘要： An operational amplifier comprises a first input pair, a second input pair, a switch and a first current mirror. The first input pair comprises a different type of MOS transistor from the second input pair. The switch determines which one of the first or the second input pair is functioning and the operating input pair is configured to output voltage. The switch is further connected to the first input pair and the first current mirror. The first current mirror is further connected to the second input pair, and is configured to copy a current passing through the switch to the second input pair. Therefore an increase of transconductance of the first input pair is compensated by a decrease of transconductance of the second input pair, and the operational amplifier has a substantially constant transconductance no matter which of the first input pair and the second input pair is functioning.
摘要翻译：运算放大器包括第一输入对，第二输入对，开关和第一电流镜。第一输入对包括与第二输入对不同类型的MOS晶体管。开关确定第一或第二输入对中哪一个正在工作，并且操作输入对配置为输出电压。开关进一步连接到第一输入对和第一电流镜。第一电流镜还连接到第二输入对，并且被配置为将通过开关的电流复制到第二输入对。因此，无论第一输入对和第二输入对中哪一个如何工作，第一输入对的跨导的增加被第二输入对的跨导的减小补偿，并且运算放大器具有基本上恒定的跨导。

17. 发明授权

US09356717B1 Device and method of selecting a channel 有权
标题翻译：选择频道的设备和方法
公开(公告)号：US09356717B1
公开(公告)日：2016-05-31
申请号：US14664915
申请日：2015-03-23
申请人： Beken Corporation
发明人： Yiming Huang , Weifeng Wang
IPC分类号： H04B1/18 , H04H40/36 , H04B1/16 , H04B1/00
CPC分类号： H04H40/36 , H04B1/0003 , H04B1/1653 , H04H40/27
摘要： A device for selecting a channel comprises a speed detector configured to detect a speed of a channel selecting mechanism; a controller connected to the speed detector; and a frequency deviation detector connected to the controller and is configured to receive an input signal. The controller selects a wideband channel searching mode for the frequency deviation detector if the speed is higher than a speed threshold, or a narrowband channel searching mode if the speed is lower than the speed threshold. The frequency deviation detector detects an existence of a channel when either an actual frequency deviation of the input signal is lower than a first wideband frequency deviation threshold when the wideband channel searching mode is selected, or the actual frequency deviation is lower than a narrowband frequency deviation threshold when the narrowband channel searching mode is selected.
摘要翻译：用于选择频道的装置包括：速度检测器，被配置为检测频道选择机构的速度; 连接到速度检测器的控制器; 以及连接到所述控制器并被配置为接收输入信号的频率偏差检测器。如果速度高于速度阈值，则控制器选择频偏检测器的宽带信道搜索模式，如果速度低于速度阈值，则选择窄带信道搜索模式。当选择宽带信道搜索模式时，当输入信号的实际频率偏差低于第一宽带频率偏差阈值时，频率偏差检测器检测信道的存在，或者实际频率偏差低于窄带频率偏差选择窄带频道搜索模式时的阈值。

18. 发明申请

US20160118939A1 AMPLIFIER AND AMPLIFICATION METHOD 有权
标题翻译：放大器和放大方法
公开(公告)号：US20160118939A1
公开(公告)日：2016-04-28
申请号：US14554001
申请日：2014-11-25
申请人： Beken Corporation
发明人： Ronghui KONG , Dawei GUO
IPC分类号： H03F1/02 , H03F3/04
CPC分类号： H03F3/3022 , H03F1/308 , H03F2200/135 , H03F2200/456 , H03F2200/555 , H03F2203/30031 , H03F2203/30078 , H03K3/3565
摘要： An amplifier comprises a biasing unit, an amplifying unit and a Schmitt trigger. The biasing unit is configured to generate a bias current which is independent of the power supply, so as to increase power supply rejection ratio. The amplifying unit is connected to the biasing unit and configured to receive an input voltage and generate an amplified voltage based on the biasing current. The Schmitt trigger is connected to the amplifier and configured to generate and output a modified voltage.
摘要翻译：放大器包括偏置单元，放大单元和施密特触发器。偏压单元被配置为产生独立于电源的偏置电流，从而增加电源抑制比。放大单元连接到偏置单元并且被配置为接收输入电压并且基于偏置电流产生放大的电压。施密特触发器连接到放大器，并配置为产生和输出修改的电压。

19. 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。

20. 发明授权

US08014743B1 Methods and apparatus for calibrating received signal strength indicators 有权
公开(公告)号：US08014743B1
公开(公告)日：2011-09-06
申请号：US13092947
申请日：2011-04-24
申请人： Ronghui Kong , Dawei Guo
发明人： Ronghui Kong , Dawei Guo
IPC分类号： H04B17/00
CPC分类号： H04B17/318 , H04B17/21
摘要： This disclosure discloses methods and apparatus for calibrating received signal strength indicators.

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