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41. 发明授权

US08766685B1 Phase locked loop circuit and a method in the phase locked loop circuit 有权
标题翻译：锁相环电路和锁相环电路中的一种方法
公开(公告)号：US08766685B1
公开(公告)日：2014-07-01
申请号：US13911099
申请日：2013-06-06
申请人： Beken Corporation
发明人： Yunfeng Zhao , Ronghui Kong , Dawei Guo
IPC分类号： H03L7/06 , H03L7/08
CPC分类号： H03L7/104
摘要： A PLL circuit comprises a phase frequency detector (PFD), a charge pump (CP), a low pass filter (LPF), a voltage controlled oscillator (VCO), a frequency divider (FD) and a reset module. The PFD receives a first and a second input signals, and outputs a first and a second adjustment parameters according to phase and frequency difference between the first and the second input signal. The CP is coupled to the PFD, generates a current according to the first and the second adjustment parameters. The LPF is coupled to the CP, and generates a voltage according to the current. The VCO is coupled to the LPF, and generates an oscillation frequency according to the voltage. The FD receives and divides the oscillation frequency, and generates the second input signal. The reset module generates a reset signal to feed to the FD, wherein the reset module receives the first signal.
摘要翻译： PLL电路包括相位频率检测器（PFD），电荷泵（CP），低通滤波器（LPF），压控振荡器（VCO），分频器（FD）和复位模块。 PFD接收第一和第二输入信号，并根据第一和第二输入信号之间的相位和频率差输出第一和第二调整参数。 CP耦合到PFD，根据第一和第二调整参数产生电流。 LPF耦合到CP，并根据电流产生电压。 VCO耦合到LPF，并根据电压产生振荡频率。 FD接收并分频振荡频率，并产生第二输入信号。复位模块产生复位信号以馈送到FD，其中复位模块接收第一信号。

42. 发明授权

US08508293B2 Amplitude shift keying demodulator and method for demodulating an ask signal 有权
标题翻译：幅移键控解调器和解调询问信号的方法
公开(公告)号：US08508293B2
公开(公告)日：2013-08-13
申请号：US13405632
申请日：2012-02-27
申请人： Jiazhou Liu , Dawei Guo , Yangeng Wang
发明人： Jiazhou Liu , Dawei Guo , Yangeng Wang
IPC分类号： H03K9/02
CPC分类号： H04L27/06 , H03D1/2272
摘要： An ASK demodulator comprises a rectification circuit which receives and rectifies an ASK signal to generate a rectified current; an active load circuit is coupled to the rectification circuit and receives the rectified current and present an impedance which is inversely proportional to at least a part of the rectified current when a frequency of a base band signal meets a preset condition; a comparator is coupled to the rectification circuit and the active load circuit and receives a reference voltage and a voltage generated based on, at least in part, the rectified current and the impedance, and compares the reference voltage and the generated voltage to generate a demodulated signal.
摘要翻译： ASK解调器包括整流电路，其接收并整流ASK信号以产生整流电流; 有源负载电路耦合到整流电路，并且当基带信号的频率满足预设条件时，接收整流电流并呈现与至少一部分整流电流成反比的阻抗; 比较器耦合到整流电路和有源负载电路，并且接收基准电压和至少部分地基于整流电流和阻抗产生的电压，并且比较参考电压和产生的电压以产生解调的信号。

43. 发明授权

US08014742B1 Methods and apparatus for calibrating received signal strength indicators 有权
标题翻译：用于校准接收信号强度指示器的方法和装置
公开(公告)号：US08014742B1
公开(公告)日：2011-09-06
申请号：US13092946
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.
摘要翻译：本公开公开了用于校准接收信号强度指示符的方法和装置。

44. 发明公开

US20240211603A1 METHOD FOR RESISTING FAULT INJECTION ATTACKS IN SECURE BOOT 审中-公开
公开(公告)号：US20240211603A1
公开(公告)日：2024-06-27
申请号：US18171587
申请日：2023-02-20
申请人： Beken Corporation
发明人： Zhifu LIU , Zhilei WANG , Pujie YANG
IPC分类号： G06F21/57 , G06F21/60
CPC分类号： G06F21/575 , G06F21/602 , G06F2221/034
摘要： A method for resisting fault injection attacks during secure boot is provided. The method may include: performing a secure check on a System-on-Chip (SoC), wherein one or more pre-determined values are written on one or more bits of a first register of the SoC during the secure check; reading one or more corresponding bits of a second register of the SoC; and comparing the values of the one or more bits of the second register with the values of the one or more corresponding bits of the first register. In response to a comparison result that the values of the one or more bits of the second register are the same as the values of the one or more corresponding bits of the first register, the SoC is booted.

45. 发明授权

US12022299B2 Apparatus and method of choosing working frequency points 有权
公开(公告)号：US12022299B2
公开(公告)日：2024-06-25
申请号：US17647507
申请日：2022-01-10
申请人： Beken Corporation
发明人： Yiming Huang , Lianxue Liu , Weifeng Wang
IPC分类号： H04W16/14 , H04B1/713 , H04W72/0453 , H04W72/541 , H04B1/7136 , H04B1/715 , H04W4/80 , H04W84/12
CPC分类号： H04W16/14 , H04B1/713 , H04W72/0453 , H04W72/541 , H04B2001/71362 , H04B2001/7154 , H04W4/80 , H04W84/12
摘要： A Bluetooth receiver includes a memory; and one or more processors in communication with the memory, the one or more processors configured to perform operations including: dividing Bluetooth frequencies of the Bluetooth receiver into Bluetooth frequency classes based on a frequency relationship among Bluetooth channels of the Bluetooth receiver and non-overlapping Wi-Fi channels of an interfering Wi-Fi device operating in a Wi-Fi frequency range within the Bluetooth frequency range, each Bluetooth frequency class including one or more Bluetooth frequency groups; determining one or more working Bluetooth frequency groups of the Bluetooth frequency classes based on pre-determined requirements, and saving entire working Bluetooth frequencies within the one or more working Bluetooth frequency groups into a channel map table, which can be used for Adaptive Frequency Hopping (AFH) to reduce Wi-Fi interferences caused by the Wi-Fi device. The Bluetooth receiver may efficiently and quickly choose working Bluetooth frequency points.

46. 发明授权

US11664846B1 Apparatus and method of choosing working frequency points 有权
公开(公告)号：US11664846B1
公开(公告)日：2023-05-30
申请号：US17646833
申请日：2022-01-03
申请人： Beken Corporation
发明人： Weifeng Wang , Yiming Huang
IPC分类号： H04B1/7143 , H04W4/80 , H04W72/0453 , H04L27/26 , H04W72/541 , H04W72/542 , H04B1/715
CPC分类号： H04B1/7143 , H04L27/2657 , H04W4/80 , H04W72/0453 , H04W72/541 , H04W72/542 , H04B2001/7154
摘要： A Bluetooth receiver includes a primary circuit path, which can create a first digital IF modulated signal to obtain a Bluetooth load signal at a current Bluetooth frequency point, and an auxiliary circuit path, in parallel with the primary circuit path, which can create a second digital IF modulated signal in a Bluetooth frequency range across multiple Bluetooth frequency points. A signal analysis module of the auxiliary circuit path may evaluate interference levels of the second digital IF modulated signal at the Bluetooth frequency points, by analyzing a Fourier Transformation (FT) spectrum of the second digital IF modulated signal, and to choose a number of working Bluetooth frequency points corresponding to relative low signal strengths in the FT spectrum. This way may efficiently and quickly choose qualified working Bluetooth frequency points for Adaptive Frequency Hopping (AFH) in a single current time slot, without consuming any additional time slots for detection.

47. 发明授权

US11297421B2 Signal processing bias circuit for microphone 有权
公开(公告)号：US11297421B2
公开(公告)日：2022-04-05
申请号：US16843522
申请日：2020-04-08
申请人： Beken Corporation
发明人： Desheng Hu , Donghui Gao , Jiazhou Liu , Dawei Guo
IPC分类号： H04R3/00 , H03F3/45 , H03M1/66
摘要： A bias circuit includes a digital-to-analog converter configured to receive a digital input and output an analog signal; an integrator coupled to a first node that is coupled to the digital-to-analog converter and an amplifier, and coupled to a second node that is coupled to a positive input port of a first comparator and a negative input port of a second comparator; the digital signal processor coupled to an output port of the first comparator and an output port of the second comparator, and coupled to an input port of the digital-to-analog converter.

48. 发明授权

US11218127B2 Power amplifier and overcurrent protection circuit 有权
公开(公告)号：US11218127B2
公开(公告)日：2022-01-04
申请号：US16946100
申请日：2020-06-05
申请人： Beken Corporation
发明人： Donghui Gao , Desheng Hu , Jiazhou Liu
IPC分类号： H03G7/00 , H03F3/45 , H03M1/66 , H04R3/00
摘要： A power amplifier includes a digital-to-analog converter, a loop filter, a driver circuit, a first adjustable reference resistor and a second adjustable reference resistor. A circuit includes an overcurrent protection circuit and a power amplifier, wherein the overcurrent protection circuit is communicatively coupled to the power amplifier. The digital-to-analog converter is configured to receive a digital signal and to output an analog signal, the driver circuit communicatively coupled to the loop filter and at least one of a first output port and a second output port of the power amplifier.

49. 发明申请

US20210303254A1 WIRELESS SPEAKER SYSTEM 有权
公开(公告)号：US20210303254A1
公开(公告)日：2021-09-30
申请号：US15929516
申请日：2020-05-06
申请人： Beken Corporation
发明人： Weifeng Wang , Lulai Chen
IPC分类号： G06F3/16 , H04R3/12
摘要： A wireless speaker system includes a first transceiver and a second transceiver. The first transceiver acting as a master is configured to establish a first wireless link with a data source for receiving a plurality of data packets, and to establish a second wireless link with a second transceiver acting as a slave for transmitting a set of parameters to the second transceiver to enable the second transceiver to sniff the plurality of data packets from the data source via an enabled wireless link. The first transceiver is further configured to monitor the values of a first communication quality of the first wireless link and a second communication quality of the enabled wireless link, and to switch roles between the first transceiver and the second transceiver when the first communication quality is less than the second communication quality and the first communication quality decreases to a pre-determined threshold value.

50. 发明授权

US11112506B2 Receiver RF front-end circuit and method of same 有权
公开(公告)号：US11112506B2
公开(公告)日：2021-09-07
申请号：US16377872
申请日：2019-04-08
申请人： Beken Corporation
发明人： Yiming Huang , Weifeng Wang
IPC分类号： G01S19/36 , G01S19/37 , G01S19/32
摘要： An RF front-end circuit in a receiver, comprising a low noise amplifier (LNA) configured to receive an RF signal from an antenna; a frequency synthesizer and divider (FS_DIV), configured to generate a first local oscillation (LO) signal, a second LO signal, a third LO signal and a fourth LO signal; a first front-end circuit communicatively coupled to the LNA and the FS_DIV, and configured to output a first digital intermediate-frequency signal by processing the amplified RF signal and the first LO signal and a second digital intermediate-frequency signal by processing the amplified RF signal, the first and second LO signals; a second front-end circuit communicatively coupled to the LNA and the FS_DIV, and configured to output a third digital intermediate-frequency signal by processing the amplified RF signal and the third LO signal and a fourth digital intermediate-frequency signal by processing the amplified RF signal, the third and fourth LO signals.

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