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公开(公告)号：US12014719B2
公开(公告)日：2024-06-18
申请号：US17932336
申请日：2022-09-15
申请人： Beken Corporation
发明人： Lulai Chen , Weifeng Wang
IPC分类号： A61F11/06 , G10K11/178 , H04R1/10
CPC分类号： G10K11/17854 , G10K2210/1081
摘要： An Active Noise Cancellation (ANC) headphone of multiple modes may include a preliminary scene-change detection circuit using ultra-low power to detect a scene change near the headphone and to send a trigger signal upon detecting the scene change, a scene identification circuit to determine a current scene upon receiving a trigger signal, and a filter switch circuit to switch the headphone mode from a previous headphone mode to a current headphone mode according to the determined current scene. In this way, the ANC headphone can automatically obtain an improved balance of comfortability, safety, and communicability under a reduced power consumption.
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公开(公告)号：US11996807B2
公开(公告)日：2024-05-28
申请号：US17662194
申请日：2022-05-05
申请人： Beken Corporation
发明人： Haiyan Zhou , Ronghui Kong , Jiazhou Liu
摘要： A new trans-impedance amplifier (TIA) with low noise is provided. The TIA may include an input stage and an output driving stage. The input stage may include a pair of input PMOS transistors, a pair of input NMOS transistors, and a pair of differential voltage input nodes. The output driving stage may include a pair of output circuits, each may include a first pair of PMOS and NMOS transistors electrically connected in parallel, a second pair of PMOS and NMOS transistors electrically connected in series, and a pair of capacitors electrically connected in series, which are electrically connected in parallel. The structure can lead to a reduced noise level of the TIA.
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公开(公告)号：US20230141090A1
公开(公告)日：2023-05-11
申请号：US17456488
申请日：2021-11-24
申请人： Beken Corporation
发明人： Chunjian TIAN , Zhilei WANG
摘要： A WiFi data transmission system is provided. The transmission system is in a mesh-tree topology and includes a router and nodes connected to the router via a root node. A node of the nodes includes a station (STA) interface, a soft access point (AP) interface, a bridge interface, and a forwarding database (FDB), for example. Upon receiving a data frame by the node, the bridge interface of the node may search the FDB using information of the data frame for a latest data record to determine an outgoing interface address of the outgoing node so as to guide an outgoing path for the data frame. The structure of transmission system can lead to an improved adaptability and communications efficiency, and a reduced resource consumption.
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公开(公告)号：US20230003906A1
公开(公告)日：2023-01-05
申请号：US17379958
申请日：2021-07-19
申请人： Beken Corporation
发明人： Dawei GUO , Pengfei Zhang
IPC分类号： G01S19/42
摘要： A PVT calculation device includes a memory; and one or more processors in communication with the memory configured to perform operations including: receiving observations and ephemerides from satellites to obtain PVT data of the satellites and predicted PVT results of the receiver; setting up observation functions respectively corresponding to the satellites; calculating by a least square solution first estimated PVT results of the receiver based on the observation functions; iteratively eliminating by a Random-Sampling Iterative Kalman Filter (RSIKF) algorithm fault observation functions from the observation functions in an inner cluster until no fault observation functions detected in the inner cluster; calculating by the RSIKF algorithm a second estimated PVT results of the receiver using the observation functions in the inner cluster; and outputting final estimated PVT results of the receiver. The PVT calculation device may calculate the PVT results of the receiver with improved accuracy and stability.
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公开(公告)号：US11474260B1
公开(公告)日：2022-10-18
申请号：US17304098
申请日：2021-06-14
申请人： Beken Corporation
发明人： Weifeng Wang , Jiazhou Liu , Pengfei Zhang , Dawei Guo
摘要： A Weil code generator and a method of generating Weil codes with a Weil code length (N) are provided. The Weil code generator includes a plurality of parallel channels (10), a multi-channel read arbiter (20), and two parallel Legendre ROMs (30), which are connected in series. A channel of the plurality of channels stores a current Weil code to demodulate signals from a satellite. The multi-channel read arbiter (20) may determine a win channel from the plurality of channels. The two Legendre ROMs (30) respectively store a first and a second Legendre sequences (LS1, LS2) each having a Legendre sequence length (2N) being double the Weil code length (N). The Weil code generator may generate Weil codes efficiently.
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公开(公告)号：US20210068127A1
公开(公告)日：2021-03-04
申请号：US16655903
申请日：2019-10-17
申请人： Beken Corporation
发明人： Weifeng Wang , Lulai Chen
摘要： A wireless speaker system includes a first transceiver and a second transceiver. The first transceiver 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 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. The first transceiver is further configured to send a second acknowledgment to the data source via the first wireless link upon failure to receive the plurality of data packets from the data source via the first wireless link and upon receiving a first acknowledgment from the second wireless transceiver via the second wireless link.
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公开(公告)号：US20180337635A1
公开(公告)日：2018-11-22
申请号：US15635635
申请日：2017-06-28
申请人： Beken Corporation
发明人： Jiazhou Liu , Yunfeng Zhao , Dawei Guo
IPC分类号： H03B5/30
CPC分类号： H03B5/30 , H03B5/32 , H03B2200/0008 , H03B2200/0012 , H03B2200/005 , H03B2200/0074 , H03B2200/008 , H03B2201/0275
摘要： A method and a circuit for exciting a crystal oscillation circuit are disclosed herein. The crystal oscillation circuit comprising: charging, with a charging circuit, a voltage-controlled oscillator; providing, with the voltage-controlled oscillator, an exciting signal; blocking, with a direct current blocking capacitor, direct current from the voltage-controlled oscillator to the crystal oscillation circuit; and exciting, with the exciting signal, the crystal oscillation circuit. The circuit for exciting a crystal oscillation circuit, comprising: a charging circuit; a voltage-controlled oscillator coupled to the charging circuit and configured to provide an exciting signal to the crystal oscillation circuit; and a direct current blocking capacitor connected between the voltage-controlled oscillator and the crystal oscillation circuit and configured to block direct current from the voltage-controlled oscillator.
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公开(公告)号：US20180302097A1
公开(公告)日：2018-10-18
申请号：US15590776
申请日：2017-05-09
申请人： Beken Corporation
发明人： Dawei GUO , Caogang YU
CPC分类号： H03L7/1976 , H03C3/0925 , H03C3/0933 , H03K23/68 , H03L7/06 , H03L7/085 , H03L7/087 , H03L7/0891 , H03L7/18 , H03M7/3004
摘要： A fractional-N frequency synthesizer comprising a multi-phase generator, a multi-path error phase generator; a current combiner; a loop filter connected to the current combiner; an oscillator (150) connected to the loop filter; a frequency divider (160); a SDM connected to both the frequency divider and the multi-phase generator, to generate variable division ratio.
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公开(公告)号：US10056930B1
公开(公告)日：2018-08-21
申请号：US15813162
申请日：2017-11-15
申请人： Beken Corporation
发明人： Qunshan Xu , Huaming Jiang
CPC分类号： H04B1/16 , H04B1/20 , H04B2001/1072 , H04R1/227 , H04R1/265 , H04R3/00 , H04R29/004 , H04R2410/00 , H04R2420/07
摘要： A wireless microphone receiver comprises a phase locker to lock a phase of an audio data successfully received from a microphone transmitter; a calculator to calculate a frequency offset between the locked phase of the microphone receiver and the phase of the microphone transmitter; a calibrator to calibrate the frequency offset using a first step if the absolute value of the frequency offset is larger than a first predetermined threshold, and to calibrate the frequency offset with a second step if the absolute value of the frequency offset is smaller than or equal to the first predetermined threshold, and complete the calibration if a calibrated frequency offset is smaller than a second threshold; a buffer to buffer the audio data received from the microphone transmitter, and the calibrator further adjusts the amount of data stored in the buffer; and the microphone receiver further outputs buffered audio data.
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公开(公告)号：US09991589B2
公开(公告)日：2018-06-05
申请号：US14849579
申请日：2015-09-09
申请人： Beken Corporation
发明人： Bo Jia , Lizhen Zhu , Qunshan Xu
IPC分类号： H01Q1/38
摘要： The invention discloses an antenna comprising a plurality of laminated layers of radiating elements, wherein each layer of radiating elements is arranged in a zigzag pattern; a feed point connected to one of the plurality laminated layers of the radiating elements and is configured to receive a radio frequency signal; and a plated via configured to couple the plurality of laminated layers of radiating elements; wherein the radiating elements are configured to radiate the radio frequency signal.
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