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1. 发明授权

US11958413B2 Foreign object detecting system and method 有权
公开(公告)号：US11958413B2
公开(公告)日：2024-04-16
申请号：US16843631
申请日：2020-04-08
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Yi-Chuan Lu , Chih-Heng Su
IPC分类号： B60R1/06 , B60S1/08 , B60S1/56 , G01J1/02 , G01V8/12
CPC分类号： B60R1/0602 , B60S1/0848 , B60S1/56 , G01J1/0252 , G01V8/12
摘要： A foreign object detecting system and a method are provided. A control circuit controls a light transmitter and a light receiver. The light transmitter is disposed adjacent to a detected object and emits a light signal toward the detected object. The light receiver is disposed adjacent to the detected object in a path along which the light signal reflected by the detected object travels. The light receiver receives the light signal reflected to the light receiver. In a pre-operation, the control circuit defines the light signal received by the light receiver when the foreign object is not on the detected object as a first reflected light signal. In a detection operation, the control circuit determines that a difference exists between the light signal currently received by the light receiver and the first reflected light signal, the control circuit determines that the foreign object is on the detected object.

2. 发明授权

US11128218B2 Adaptive frequency adjusting system 有权
公开(公告)号：US11128218B2
公开(公告)日：2021-09-21
申请号：US16811059
申请日：2020-03-06
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chun-Kai Hsu , Chih-Heng Su
IPC分类号： H02M3/158 , H02M1/08
摘要： An adaptive frequency adjusting system is provided. An error amplifier outputs an error amplified signal according to an output voltage of a power converter and a reference voltage. When a comparator determines that a voltage of a slope signal reaches a voltage of the error amplified signal within a maximum on-time of an upper bridge switch, the comparator outputs a reset signal. When the comparator determines that the voltage of the slope signal fails to reach the voltage of the error amplified signal and the maximum on-time ends, the comparator outputs the reset signal and instructs a clock generator to output a clock signal having a lower frequency. A driver circuit turns off the upper bridge switch and turns on a lower bridge switch according to the reset signal, and drives the upper bridge switch based on the clock signal having the lower frequency.

3. 发明授权

US10412813B1 Ambient light sensor 有权
公开(公告)号：US10412813B1
公开(公告)日：2019-09-10
申请号：US16273708
申请日：2019-02-12
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chih-Ning Chen , Chih-Heng Su
IPC分类号： H05B37/02 , H05B33/08
摘要： An ambient light sensor is provided, which includes a photoelectric component, a variable capacitor, an operational amplifier, a comparator, a pulse generator circuit and a pulse accumulator circuit. The photoelectric component converts light energy into a photocurrent. The variable capacitor is connected between a first input terminal and an output terminal of the operational amplifier. A capacitance of the variable capacitor is adjusted according to the photocurrent. The operational amplifier outputs an amplified error signal based on a difference between an input voltage at its first input terminal and a reference voltage at its second input terminal. The comparator compares the amplified error signal with the reference voltage to output a comparison signal. The pulse generator circuit outputs a pulse signal based on the comparison signal. The accumulator circuit accumulates the number of counts that the input voltage is increased to a voltage larger than the reference voltage.

4. 发明授权

US11799473B1 Closed-loop inductor current emulating circuit 有权
公开(公告)号：US11799473B1
公开(公告)日：2023-10-24
申请号：US17990811
申请日：2022-11-21
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chun-Kai Hsu , Chih-Heng Su
IPC分类号： H03K17/56 , H03K5/24
CPC分类号： H03K17/56 , H03K5/24 , H03K2217/0063 , H03K2217/0072
摘要： A closed-loop inductor current emulating circuit is provided. An emulation controller circuit generates an emulating signal according to a current flowing through a first terminal of a low-side switch of a power converter. When the emulation controller circuit outputs the emulating signal to a charging and discharging circuit, the charging and discharging circuit outputs a charging and discharging signal to a first terminal of a capacitor according to the emulating signal. When the emulation controller circuit outputs the emulating signal to a control terminal of the capacitor to adjust a capacitance of the capacitor, the charging and discharging circuit outputs a charging and discharging signal to the first terminal of the capacitor according to one or both of an input voltage and an output voltage of the power converter.

5. 发明授权

US10666075B2 Non-narrow voltage direct current charger and control method thereof 有权
公开(公告)号：US10666075B2
公开(公告)日：2020-05-26
申请号：US16044623
申请日：2018-07-25
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chun-Kai Hsu , Chih-Heng Su
IPC分类号： H02J7/00 , H02J7/04
摘要： Disclosed are a non-narrow voltage direct current (NON-NVDC) charger and a control method thereof. In the present disclosure, a proper target voltage, related to a turn-on voltage of a switch circuit, is determined according to an output voltage of a load, a storage voltage of an energy storage device and a turn-on resistance value of the switch circuit. Then, according to the determined target voltage, the NON-NVDC charger can enter a supplement mode at an appropriate time. The NON-NVDC charger can be operated stably and has excellent operation efficiency even when a current flowing through a transformer close to a maximum safe current.

6. 发明授权

US10499474B1 Driver circuit and driving method with low inrush current 有权
公开(公告)号：US10499474B1
公开(公告)日：2019-12-03
申请号：US16280236
申请日：2019-02-20
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chih-Ning Chen , Chih-Heng Su , Hung-Wen Lu
IPC分类号： H05B33/08
CPC分类号： H05B33/0884
摘要： A driver circuit and a driving method with low inrush current are provided. The driving method includes steps of: supplying a charging current smaller than a high inrush current; outputting a pulse signal from a pulse generating circuit; enabling a light driving circuit to receive the charging current by the pulse signal and allowing the charging current to flow to an storage capacitor; turning on a switch component and a light-emitting assembly by the pulse signal; supplying an auxiliary current smaller than the high inrush current; enabling the light driving circuit to receive the auxiliary current and allowing auxiliary current to flow sequentially to the switch component and the light-emitting assembly; and emitting light by the light-emitting assembly with the discharging current of the storage capacitor and the auxiliary current of input power source.

7. 发明授权

US11226666B2 Power failure prevention system with power management mechanism and power failure prevention method with power management mechanism 有权
公开(公告)号：US11226666B2
公开(公告)日：2022-01-18
申请号：US16853878
申请日：2020-04-21
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chun-Kai Hsu , Chih-Heng Su , Chih-Yuan Chen
IPC分类号： G06F1/30 , H02M3/158 , G06F1/3203
摘要： A power failure prevention system and method with a power management mechanism are provided. A switch circuit is connected to a first terminal of an inductor. An energy storage circuit is connected to the switch circuit. A pre-charged circuit is connected to an input power source and a second terminal of the inductor. A pre-charging control circuit is connected to the pre-charged circuit and configured to obtain a voltage of a node between the pre-charged circuit and the second terminal of the inductor, a voltage of the switch circuit or a voltage of the energy storage circuit as a pre-charged voltage. The input power source pre-charges the pre-charged circuit. When the pre-charging control circuit determines that the pre-charged voltage is higher than or equal to a reference voltage, the pre-charging control circuit controls the pre-charged circuit, allowing the input power source to charge the energy storage circuit.

8. 发明授权

US10381820B2 Undervoltage protection circuit and overvoltage protection circuit 有权
公开(公告)号：US10381820B2
公开(公告)日：2019-08-13
申请号：US15581740
申请日：2017-04-28
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chih-Heng Su , Yang-Fan Su
IPC分类号： H02H3/20 , H02H3/24
摘要： An undervoltage protection circuit and an overvoltage protection circuit include a first comparator and a second comparator. The first comparator has a first input terminal, a second input terminal, and a first output terminal. The second comparator has a third input terminal, a fourth input terminal, and a second output terminal. The third input terminal receives a reference voltage and the fourth input terminal receives a first feedback voltage. The first and the second output terminals are coupled with a logic device. The first feedback voltage is converted to a second feedback voltage by the delay circuit and the voltage level shifter. The first comparator outputs a detection enabling voltage for undervoltage/overvoltage detection when the first feedback voltage crosses the second feedback voltage. The logic device outputs a protection voltage level undervoltage/overvoltage protection when the first feedback voltage crosses the reference voltage.

9. 发明申请

US20160079775A1 Charging Current Setting Method and Charging Module 有权
标题翻译：充电电流设定方法和充电模块
公开(公告)号：US20160079775A1
公开(公告)日：2016-03-17
申请号：US14568118
申请日：2014-12-12
申请人： Anpec Electronics Corporation
发明人： Chih-Heng Su
IPC分类号： H02J7/00
CPC分类号： H02J7/007 , H02J7/0052 , H02J2007/0062
摘要： A charging current setting method for a charging module includes detecting at least one voltage value of an input voltage signal in an input terminal of the charging module to calculate an input resistance; setting a lower limit voltage value according to the input resistance; controlling an input current to increase, so that the input voltage signal decreases in accordance with the increasing input current; controlling the input voltage signal to remain on the lower limit voltage value when the input voltage signal decreases to the lower limit voltage value, and recording a magnitude of the input current as an upper limit current value after the input current becomes stable; and determining a charging current value of the charging module according to the upper limit current value.
摘要翻译：一种用于充电模块的充电电流设置方法，包括：在所述充电模块的输入端子中检测输入电压信号的至少一个电压值，以计算输入电阻; 根据输入电阻设定下限电压值; 控制输入电流增加，使得输入电压信号根据增加的输入电流而减小; 当输入电压信号降低到下限电压值时，控制输入电压信号保持在下限电压值，并且在输入电流变得稳定之后将输入电流的大小记录为上限电流值; 以及根据上限电流值确定充电模块的充电电流值。

10. 发明授权

US12007273B2 Method of stabilizing data of digital signals 有权
公开(公告)号：US12007273B2
公开(公告)日：2024-06-11
申请号：US17392263
申请日：2021-08-03
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Jia-Hua Hong , Chih-Heng Su
IPC分类号： G01J1/44 , G01J1/42
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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