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1. 发明申请

US20230003906A1 APPARATUS AND METHOD OF CALCULATING POSITION-VELOCITY-TIME RESULTS OF RECEIVER 有权
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.

2. 发明申请

US20180302097A1 Fractional-N frequency synthesizer and method thereof 审中-公开
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
IPC分类号： H03L7/197 , H03L7/087 , H03L7/089
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.

3. 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.

4. 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。

5. 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。

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