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1.发明授权公开(公告)号：US11500504B1
公开(公告)日：2022-11-15
申请号：US17349884
申请日：2021-06-16
Applicant: PixArt Imaging Inc.
Inventor： Sung-Han Wu
Abstract: A touch controlling apparatus to be coupled to a touch sensor array is disclosed. The apparatus comprises a memory circuit and a controlling circuit. The memory circuit is used for recording different calibration ratios associated with different process variations. The controlling circuit is coupled to the memory circuit, and is used for calibrating or adjusting sensitivities of a plurality of cells by respectively using the different calibration ratios to calibrate or adjust sensed capacitance changes of the plurality of cells to generate and output resultant capacitance changes of the plurality of cells.
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公开(公告)号：US11334042B2
公开(公告)日：2022-05-17
申请号：US16880179
申请日：2020-05-21
Applicant: PixArt Imaging Inc.
Inventor： Sung-Han Wu , Yi-Hsien Ko
IPC: G05B19/042 , H04L12/28
Abstract: There is provided a smart home control system including a host, at least one sensor, a plurality of controlled devices and an informing device. The host identifies entering and leaving of family members according to detection results of the at least one sensor, and controls on/off of the controlled devices or informs a specific family member by the informing device to execute agenda according to a member ID of a family member who is identified to enter or leave the house.
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公开(公告)号：US10603566B2
公开(公告)日：2020-03-31
申请号：US15689293
申请日：2017-08-29
Applicant: PIXART IMAGING INC.
Inventor： Sung-Han Wu
Abstract: The disclosure is related to a method and a system for posture correction adapted to one sporting equipment. In the method, a force distribution history responsive to force or pressure data detected by one or more pressure sensors mounted on a surface of the sporting equipment over a period of time is firstly obtained. The pressure value is recorded in the force distribution history once it is detected that a pressure value exceeds a threshold, and the force distribution history is compared with a selected force pattern model so as to obtain a deviation distribution model. The deviation distribution model renders a correction data for the posture correction.
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4.发明申请PROGRAMMABLE BAND-PASS FILTER CIRCUIT OF ANALOG FRONT-END USED FOR CAPACITANCE DETECTION 审中-公开用于电容检测的模拟前端可编程带通滤波器电路公开(公告)号：US20170063340A1
公开(公告)日：2017-03-02
申请号：US15347789
申请日：2016-11-10
Applicant: PixArt Imaging Inc.
Inventor： Sung-Han Wu , Chang-Yuan Liou
IPC: H03H11/12
CPC classification number: H03H11/126 , G06F3/0416 , G06F3/044 , H03H11/1217
Abstract: A programmable band-pass filter circuit, which is included by an analog front-end circuit and used for capacitance detection, includes an operational amplifier, an input resistor, a feedback resistor, and a feedback capacitor. The operational amplifier includes a first input coupled to a reference level, a second input, and an output. The input resistor has a first end coupled to a sensed capacitor and a second end coupled to the second input of the operational amplifier. The feedback resistor and feedback capacitor are connected between the second input of the operational amplifier and the output of the operational amplifier, respectively.
Abstract translation: 由模拟前端电路包括并用于电容检测的可编程带通滤波器电路包括运算放大器，输入电阻器，反馈电阻器和反馈电容器。 运算放大器包括耦合到参考电平的第一输入端，第二输入端和输出端。 输入电阻器具有耦合到感测电容器的第一端和耦合到运算放大器的第二输入端的第二端。 反馈电阻和反馈电容分别连接在运算放大器的第二输入端和运算放大器的输出端之间。
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公开(公告)号：US11747939B1
公开(公告)日：2023-09-05
申请号：US17739768
申请日：2022-05-09
Applicant: PIXART IMAGING INC.
Inventor： Sung-Han Wu
CPC classification number: G06F3/04166 , G06F3/044
Abstract: There is provided a capacitive touch control system adapted to detect low frequency signals, including a touch panel and an analog front end. The analog front end includes a frequency booster, which boosts a low frequency signal outputted by the touch panel using a variable reference frequency corresponding different function symbols of the low frequency signal such that resistance of a resistor of an amplifier in the analog front end needs not to be increased thereby reducing the manufacturing cost and a leakage voltage drop on the resistor.
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Patent Agency Ranking
公开(公告)号：US11599221B2
公开(公告)日：2023-03-07
申请号：US16991277
申请日：2020-08-12
Applicant: PixArt Imaging Inc.
Inventor： Sung-Han Wu
Abstract: There is provided a capacitive touch device including a touch panel and a control chip. The touch panel includes a detection electrode configured to form a self-capacitor. The control chip includes an emulation circuit and a subtraction circuit. The emulation circuit is configured to output a reference signal. The subtraction circuit is coupled to the emulation circuit and the detection electrode, subtracts the reference signal outputted by the emulation circuit from a detected signal outputted by the detection electrode to output a differential detected signal, and identifies a touch event according to an amplified differential detected signal so as to improve the touch sensitivity.
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公开(公告)号：US11457837B2
公开(公告)日：2022-10-04
申请号：US16386318
申请日：2019-04-17
Applicant: PIXART IMAGING INC.
Inventor： Sung-Han Wu
Abstract: A direction control apparatus with a sensor, a method for determining a driver status using the driving control apparatus, and a system for determining the driver status are provided. The direction control apparatus includes at least a pressure sensor to sense a plurality of pressure values applied to multiple positions of the direction control apparatus. When the pressure values are received by a controller of the apparatus, the driver status can be determined according to a change of pressure values over time, or further a change of the positions where pressure is applied. The system can connect with an autopilot system and an alarm system of a vehicle via the controller. Therefore, the system incorporates an autopilot system and issues an alarm when the driver status is determined to be abnormal.
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公开(公告)号：US11456740B2
公开(公告)日：2022-09-27
申请号：US16930348
申请日：2020-07-16
Applicant: PixArt Imaging Inc.
Inventor： Sung-Han Wu
IPC: H03K17/96
Abstract: There is provided a touch detection circuit including a charging circuit, a discharging circuit, a counter and a processor. The charging circuit charges a detection capacitor within a charging interval using different currents. The discharging circuit discharges the detection capacitor within a discharging interval using different currents. The counter counts the charging interval and the discharging interval. The processor subtracts a baseline time from a counted charging time and a counted discharging time to cancel the noise interference.
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公开(公告)号：US10972099B2
公开(公告)日：2021-04-06
申请号：US16744580
申请日：2020-01-16
Applicant: PixArt Imaging Inc.
Inventor： Sung-Han Wu , Che-Chia Hsu , Chia-Yi Lee
Abstract: A capacitive touch system including a drive end, a capacitive touch sensing device and a detection end is provided. The drive end inputs a modulated drive signal into an input channel of the capacitive sensing device, wherein the modulated drive signal includes a plurality of driving frequencies. The detection end detects a detection signal of an output channel of the capacitive sensing device and generates a two-dimensional detection vector corresponding to each of the driving frequencies. The capacitive touch system includes a touch panel or a touch keyboard.
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公开(公告)号：US12216861B2
公开(公告)日：2025-02-04
申请号：US18224587
申请日：2023-07-21
Applicant: PixArt Imaging Inc.
Inventor： Sung-Han Wu
Abstract: There is provided a capacitive touch control system adapted to detect low frequency signals, including a touch panel and an analog front end. The analog front end includes a frequency booster, which boosts a low frequency signal outputted by the touch panel using a variable reference frequency corresponding to different function symbols of the low frequency signal such that resistance of a resistor of an amplifier in the analog front end needs not to be increased thereby reducing the manufacturing cost and a leakage voltage drop on the resistor.
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