-
1.发明授权公开(公告)号：US11968503B2
公开(公告)日：2024-04-23
申请号：US17755882
申请日：2020-09-24
发明人： Zhifei Yang , Haijun Zhang , Liming Du , Jiantao Cheng , Hongjun Sun
CPC分类号： H04R3/007 , G01R19/2509
摘要： A current detection circuit and method for protecting a speaker, and a chip are provided. The current detection circuit includes a current detection module and an analog-to-digital converter. The current detection module samples a current flowing through the speaker based on current mirror technology, and converts the current into a voltage to output a first voltage signal and a second voltage signal. The analog-to-digital converter converts the first voltage signal and the second voltage signal into a PDM code, to calculate a current parameter of the speaker.
-
公开(公告)号：US11907437B2
公开(公告)日：2024-02-20
申请号：US17595403
申请日：2020-05-14
发明人： Tao Cheng , Zhong Zhang , Jiantao Cheng , Liming Du , Hongjun Sun
IPC分类号： G06F3/041 , G06F3/02 , G06F3/023 , G06F3/0346 , H04M1/23
CPC分类号： G06F3/0202 , G06F3/023 , G06F3/0346 , H04M1/236
摘要： A terminal control system and method, and a terminal device are provided. The terminal control system includes: a detection chip and at least one terminal key arranged on a side surface of a terminal device. The detection chip is connected to the terminal key. The terminal key is configured to generate an inductive capacitance and an interelectrode capacitance corresponding to an external control instruction, in response to a reception of the external control instruction. The detection chip is configured to detect the inductive capacitance and the interelectrode capacitance; determine inductive capacitance variation corresponding to the inductive capacitance and interelectrode capacitance variation corresponding to the interelectrode capacitance; determine a control type corresponding to the control instruction according to the inductive capacitance variation and the interelectrode capacitance variation; and trigger the terminal device to perform a control operation corresponding to the control type.
-
公开(公告)号：US20220197401A1
公开(公告)日：2022-06-23
申请号：US17595403
申请日：2020-05-14
发明人： Tao CHENG , Zhong ZHANG , Jiantao CHENG , Liming DU , Hongjun SUN
IPC分类号： G06F3/02 , G06F3/023 , G06F3/0346 , H04M1/23
摘要： A terminal control system and method, and a terminal device are provided. The terminal control system includes: a detection chip and at least one terminal key arranged on a side surface of a terminal device. The detection chip is connected to the terminal key. The terminal key is configured to generate an inductive capacitance and an interelectrode capacitance corresponding to an external control instruction, in response to a reception of the external control instruction. The detection chip is configured to detect the inductive capacitance and the interelectrode capacitance; determine inductive capacitance variation corresponding to the inductive capacitance and interelectrode capacitance variation corresponding to the interelectrode capacitance; determine a control type corresponding to the control instruction according to the inductive capacitance variation and the interelectrode capacitance variation, and trigger the terminal device to perform a control operation corresponding to the control type.
-
公开(公告)号：US11876474B2
公开(公告)日：2024-01-16
申请号：US17293377
申请日：2019-12-12
发明人： Guanxing Zhao , Shaofu Wu , Dajun Wu , Zhijun Meng
CPC分类号： H02P3/02 , G06F3/016 , H02P3/18 , H02P25/032 , H02P25/06 , H02P2209/13
摘要： A linear resonant device and a braking method for the same. The linear resonant device comprises a linear resonant motor and a drive chip. The drive chip pre-stores a drive waveform and at least one first braking waveform therein. The method comprises: determining, in response to a braking instruction, whether vibration of the linear resonant motor meets a first condition while being driven by the drive waveform; and if so, controlling the drive chip to drive, by using the first braking waveform, the linear resonant motor and to conduct a first braking process for the linear resonant motor, wherein the first braking waveform comprises at least two pulse waveforms, and an amplitude value of each of the at least two pulse waveforms gradually decreases along a propagation direction of the first braking waveform.
-
公开(公告)号：US20220014123A1
公开(公告)日：2022-01-13
申请号：US17293377
申请日：2019-12-12
发明人： Guanxing ZHAO , Shaofu WU , Dajun WU , Zhijun MENG
IPC分类号： H02P3/02 , G06F3/01 , H02P3/18 , H02P25/032 , H02P25/06
摘要： A linear resonant device and a braking method for the same. The linear resonant device comprises a linear resonant motor and a drive chip. The drive chip pre-stores a drive waveform and at least one first braking waveform therein. The method comprises: determining, in response to a braking instruction, whether vibration of the linear resonant motor meets a first condition while being driven by the drive waveform; and if so, controlling the drive chip to drive, by using the first braking waveform, the linear resonant motor and to conduct a first braking process for the linear resonant motor, wherein the first braking waveform comprises at least two pulse waveforms, and an amplitude value of each of the at least two pulse waveforms gradually decreases along a propagation direction of the first braking waveform.
-
公开(公告)号：US11128130B2
公开(公告)日：2021-09-21
申请号：US16692942
申请日：2019-11-22
发明人： Xucheng Luo , Jiantao Cheng , Jianwei Hu , Chuankui Wu , Yongqiang He , Yan Jiang
摘要： A protection circuit is provided. A control circuit receives an input voltage. In a case that the input voltage is lower than a negative threshold voltage, the control circuit outputs a first control voltage to a surge bleeder circuit through a first output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a first bleeder current. In a case that the input voltage is higher than a positive threshold voltage, the control circuit outputs a second control voltage to the surge bleeder circuit through a second output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a second bleeder current.
-
公开(公告)号：US20200212672A1
公开(公告)日：2020-07-02
申请号：US16692942
申请日：2019-11-22
发明人： Xucheng LUO , Jiantao CHENG , Jianwei HU , Chuankui WU , Yongqiang HE , Yan JIANG
摘要： A protection circuit is provided. A control circuit receives an input voltage. In a case that the input voltage is lower than a negative threshold voltage, the control circuit outputs a first control voltage to a surge bleeder circuit through a first output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a first bleeder current. In a case that the input voltage is higher than a positive threshold voltage, the control circuit outputs a second control voltage to the surge bleeder circuit through a second output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a second bleeder current.
-
8.发明公开公开(公告)号：US20240001229A1
公开(公告)日：2024-01-04
申请号：US18251909
申请日：2021-11-05
发明人： Peiliang YU
IPC分类号： A63F13/285 , G06F3/01 , B06B1/02
CPC分类号： A63F13/285 , G06F3/016 , B06B1/0253 , B06B2201/30
摘要： A vibration apparatus and a local vibration adjustment method therefor, and an electronic device are provided. The vibration apparatus includes: two or more excitation modules, a vibration sensing module and a processing module. The vibration sensing module may obtain a vibration sensing signal in a non-target vibration region while target haptic sensation is generated in a target vibration region. The processing module drives, based on the vibration sensing signal, an excitation module in the non-target vibration region to generate corresponding damping vibration to counteract the non-target vibration, thereby weakening the vibration in the non-target vibration region.
-
公开(公告)号：US20220416734A1
公开(公告)日：2022-12-29
申请号：US17756601
申请日：2020-11-18
发明人： Jianing ZHOU , Haijun ZHANG , Wei YAO , Liming DU , Jiantao CHENG , Hongjun SUN
摘要： Disclosed are a digital audio power amplifier and a power amplifier loop. The power amplifier loop comprises an operational amplifier U1, a capacitor C1, a power amplifier output stage, a resistor R1, a resistor R2 and a noise control unit, wherein an inverting input end of the operational amplifier U1 is respectively connected to one end of the capacitor C1, one end of the noise control unit and an output end of a preceding DAC current source; an output end of the operational amplifier U1 is respectively connected to a control end of the power amplifier output stage and the other end of the capacitor C1; an output end of the power amplifier output stage is successively grounded by means of the resistors R1, R2; the other end of the noise control unit is connected to a connection point between the resistors R1, R2; the resistance values of the resistors R1, R2 are set to satisfy R1/R2=(N−2)/2, where N>2; the reference voltage of the operational amplifier U1 is equal to PVDD/N, with PVDD being a power supply voltage of the power amplifier output stage; and the noise control unit is a resistor module. The present application ensures the normal operation of the digital audio power amplifier.
-
公开(公告)号：US10756615B2
公开(公告)日：2020-08-25
申请号：US16186009
申请日：2018-11-09
发明人： Xucheng Luo , Jianwei Hu , Jiantao Cheng
摘要： A power supply conversion circuit is provided, which includes: a first voltage clamping module configured to decrease an input voltage to a preset low voltage; a boost module configured to increase the input voltage or the preset low voltage to a target voltage; a second voltage clamping module configured to maintain the target voltage within a preset voltage range; a filter module configured to filter out ripples in the target voltage; and at least one output module, each of which is configured to supply power to a load. Compared with a conventional LDO integrated circuit, the circuit can provide multiple output power supplies, and it is only required to additionally arrange one field effect transistor for one more output power supply. Therefore, the power supply conversion circuit has a simple structure, is expandable easily and is applicable to an analog integrated circuit requiring multiple output power supplies.
-
-
-
-
-
-
-
-
-
搜索结果
28 条记录 (耗时 0.017 秒)
