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公开(公告)号：US12104717B2
公开(公告)日：2024-10-01
申请号：US18071758
申请日：2022-11-30
发明人： Ming-Hung Chang
IPC分类号： F16K99/00
CPC分类号： F16K99/0048
摘要： A piezoelectric valve driver device is provided. A first driver is connected to a first side of a valve. A second driver is connected to a second side of the valve. A power charging circuit is coupled between an external power source and a second voltage. A charging and discharging current controller is connected to the first driver, the second driver and the power charging circuit, and is configured to control currents of the first driver, the second driver and the power charging circuit. When a driver circuit switches the valve from a closed state to an open state, the first driver provides a first voltage to the first side of the valve, and the second voltage that is outputted to the second side of the valve by the second driver is discharged to output a discharging current to the external power source through the power charging circuit.
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公开(公告)号：US12078540B2
公开(公告)日：2024-09-03
申请号：US17979862
申请日：2022-11-03
发明人： Jia-Hua Hong
IPC分类号： G01J3/50
CPC分类号： G01J3/50
摘要： An optical sensor having a common light sensing circuit for synchronously sensing a plurality of color light signals is provided. A plurality of photoelectric components respectively convert the plurality of color light signals into a plurality of photocurrents. A plurality of gain amplifiers respectively multiply the plurality of photocurrents by a plurality of gains to output a plurality of amplified photocurrents. An arithmetic circuit adds up the plurality of amplified photocurrents to output a total amplified photocurrent signal. A common analog-to-digital converter converts the total amplified photocurrent signal into a digital signal. A counter circuit counts bit values of the digital signal to output a counting signal.
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公开(公告)号：US20240195393A1
公开(公告)日：2024-06-13
申请号：US18113143
申请日：2023-02-23
发明人： LI-WEI CHEN , KE-TSUNG CHEN
摘要： A motor controller having a pulse width modulation generating mechanism is provided. A triangular wave signal generator circuit generates a triangular wave signal. A comparator compares the triangular wave signal with an input control signal to determine a pulse width modulation signal. A signal detector circuit detects a duty cycle of each of a plurality of pulse waves of the pulse width modulation signal. A control converter circuit converts the duty cycle of each of the plurality of pulse waves of the pulse width modulation signal as an arithmetic value into a control value, according to a preset ratio. A driver circuit drives a motor to rotate according to the control value from the control converter circuit.
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公开(公告)号：US12007273B2
公开(公告)日：2024-06-11
申请号：US17392263
申请日：2021-08-03
发明人： Jia-Hua Hong , Chih-Heng Su
CPC分类号： G01J1/44 , G01J1/4204 , G01J2001/444
摘要： A method of stabilizing data of digital signals is provided. The method includes steps of: setting a boundary coefficient; reading a piece of digital data; defining a value of the piece of digital data as a center value; outputting the value of the piece of digital data; reading a next piece of digital data; subtracting a value of the next piece of digital data from the previously outputted value to obtain a positive difference or a negative difference; and determining whether or not an absolute value of the positive or negative difference is larger than the boundary coefficient, if not, outputting the center value, if yes, updating the center value such that the updated center value is equal to the value of the next piece of digital data, and outputting the updated center value.
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公开(公告)号：US20240171075A1
公开(公告)日：2024-05-23
申请号：US18113134
申请日：2023-02-23
发明人： YI-CHUAN LU , CHIH-HENG SU
CPC分类号： H02M3/1582 , H02M1/0022 , H02M1/0032
摘要： A buck converter using an ultra-low working current is provided. An error amplifier amplifies a difference between a voltage of an output terminal of the buck converter and a reference voltage to output an error amplified signal. A comparator compares a voltage of the error amplified signal with a ramp voltage to output a comparison signal. A control circuit controls a driver circuit to drive a high-side switch and a low-side switch according to the comparison signal. When the buck converter does not enter an ultra-low current mode, a low current controller circuit controls a system circuit to obtain an input current from an input power source. When the buck converter enters the ultra-low current mode, the low current controller circuit controls the system circuit to stop obtaining the input current from the input power source.
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公开(公告)号：US11956595B2
公开(公告)日：2024-04-09
申请号：US17580576
申请日：2022-01-20
发明人： Ming-Hung Chang
CPC分类号： H04R19/02 , H03F3/45475 , H04R3/04 , H03F2200/171 , H04R2201/003
摘要： A micro electro-mechanical film speaker device is provided. A signal input terminal of a signal amplifier circuit is connected to an external input circuit. A second output terminal of the signal amplifier circuit is connected to a negative terminal of a micro electro-mechanical film speaker. A first terminal of a first high-pass filter is connected to a first output terminal of the signal amplifier circuit. A second terminal of the first high-pass filter is connected to a positive terminal of the micro electro-mechanical film speaker. A first terminal of a second high-pass filter is connected to a feedback terminal of the signal amplifier circuit. A second terminal of the second high-pass filter is connected to the positive terminal of the micro electro-mechanical film speaker.
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公开(公告)号：US20240072654A1
公开(公告)日：2024-02-29
申请号：US17968803
申请日：2022-10-19
发明人： KUN-MIN CHEN , KE-TSUNG CHEN
摘要： A power converter having a multi-stage high-side driving mechanism is provided. A control circuit outputs a first high-side control signal. A high-side driving circuit, according to the first high-side control signal and a first input voltage signal, outputs a first stage high-side driving signal to a control terminal of a high-side switch. As a result, a voltage of the control terminal of the high-side switch is pulled up to a first stage voltage from zero. Then, the control circuit outputs a second high-side control signal. A charge pump outputs a charging signal. The high-side driving circuit, according to the second high-side control signal and the charging signal, outputs a second stage high-side driving signal to the control terminal of the high-side switch. As a result, the voltage of the control terminal of the high-side switch is pulled up from the first stage voltage to a target voltage.
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公开(公告)号：US20230387832A1
公开(公告)日：2023-11-30
申请号：US17878151
申请日：2022-08-01
发明人： MING-JUNG TSAI
IPC分类号： H02P1/16
CPC分类号： H02P1/16
摘要： A motor driver having a high success rate starting mechanism is provided. A multi-segment slope pattern circuit connects a plurality of values of waveforms of a starting waveform signal to form a curve. The multi-segment slope pattern circuit determines a plurality of slopes respectively of a plurality of curve segments included in the curve according to a plurality of parameters related to a motor. The multi-segment slope pattern circuit outputs a multi-segment slope pattern signal according to the plurality of slopes of the plurality of curve segments. A startup signal generating circuit outputs a first startup waveform signal according to the multi-segment slope pattern signal. A motor controller circuit controls a motor driving circuit to start up the motor according to the first startup waveform signal.
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公开(公告)号：US11821789B2
公开(公告)日：2023-11-21
申请号：US18193605
申请日：2023-03-30
发明人： Chih-Ning Chen
CPC分类号： G01J1/44 , H03F3/45475 , G01J2001/446
摘要： A sensor is provided. A first terminal of a first current source and a first terminal of a first transistor are connected to a cathode of the photodiode. A control terminal of a second transistor is connected to an output terminal of a first operational amplifier. A first terminal of the second transistor is connected to a second terminal of the first transistor through a first current mirror circuit. A second terminal of the second transistor is connected to a second current source, a second input terminal of a second operational amplifier and a first terminal of a third transistor. A first input terminal of the second operational amplifier is connected to the first terminal of the first transistor. A control terminal of the third transistor is connected to an output terminal of the second operational amplifier.
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公开(公告)号：US20230369998A1
公开(公告)日：2023-11-16
申请号：US17845984
申请日：2022-06-21
发明人： MING-JUNG TSAI
IPC分类号： H02P6/15
CPC分类号： H02P6/15
摘要： A motor controller circuit having a rotational speed locking mechanism is provided. Each time when a motor commutates, a first signal generating circuit resets a first waveform signal and a second signal generating circuit resets a second waveform signal. An output signal generating circuit outputs a waveform output signal according to the first waveform signal and the second waveform signal. A motor controller circuit outputs an on-time signal according to the waveform output signal. A motor driving circuit outputs a driving signal to the motor to drive the motor to rotate according to the on-time signal.
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