Patents by Inventor Shao-Wei Chiu

Shao-Wei Chiu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210137328
    Abstract: An automatic cleaning apparatus is configured to clean a floor and emit ultraviolet light for sterilizing the floor in a cleaning mode. Upon detecting that a wall is nearby, the automatic cleaning apparatus emits ultraviolet light toward a corner formed by the floor and the wall for sterilization.
    Type: Application
    Filed: May 21, 2020
    Publication date: May 13, 2021
    Applicant: NKFG Corporation
    Inventors: Te-Li TIEN, Shao-Wei CHIU, Yu-De LIN, Hsiang-En CHIU, Han-Chien CHENG, Chih-Chang LIN
  • Publication number: 20190215937
    Abstract: The prevent invention provides a navigation method, used in a navigation system. The navigation system includes a server device, a mobile electronic device, and a plurality of light emitting modules detachably secured in a plurality of lamp-holders. The navigation method includes the following steps: the plurality of light emitting modules continuously transmitting a wireless signal with identification information; the mobile electronic device receiving the identification information and respectively determining a distances between the mobile electronic device and the light emitting modules transmitting the identification information, and storing the distances as distance information; the electronic device determining a position of the mobile electronic device based on the identification information, the distance information, the map information and flag information stored in the server device.
    Type: Application
    Filed: January 7, 2019
    Publication date: July 11, 2019
    Applicant: PLS Opto-Electronic Co., Ltd.
    Inventors: Shao-Wei Chiu, Yin Cheng Huang
  • Patent number: 9621060
    Abstract: A self-excited power conversion circuit for secondary side control output power includes a comparator unit and a transistor installed directly in a secondary side output module, and the comparator unit is electrically coupled to at least one load, and the transistor is electrically coupled between to a conversion module of the circuit and the load. The comparator unit is provided for adjusting the duty cycle of the transistor after detecting the amount of energy outputted from the conversion module to the load from, so as to adjust the amount of energy actually received by the load to achieve a constant power effect.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: April 11, 2017
    Assignee: Anwell Semiconductor Corp.
    Inventors: Cheng-Po Hsiao, Chung-Hsin Huang, Ke-Horng Chen, Chun-Chieh Kuo, Shih-Ping Tu, Shao-Wei Chiu
  • Patent number: 9544963
    Abstract: A self-excited TRIAC dimming circuit applied in a panel light includes a dimming module and at least one conversion module, and a power factor controller (PFC) is installed in the dimming module, and the conversion module is a self-excited electronic isolation transformer, and the TRIAC PFC is integrated with the circuit structure of a self-excited electronic transformer to improve the overall circuit stability, so that the panel light complies with a high safety standard to enhance product applicability and competitiveness.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: January 10, 2017
    Assignee: Unity Opto Technology Co., Ltd.
    Inventors: Wei Chang, Chih-Hsien Wu, Kai-Cheng Chuang, Shao-Wei Chiu, Cheng-Han Hung
  • Publication number: 20160308432
    Abstract: A power circuit with a low total harmonic distortion includes a conversion module and a control module, and the conversion module includes a first switch, a second switch, a power storage element and a conversion element. Both ends of the power storage element are electrically connected to the first switch, the second switch and the conversion element. Trigger ends of the first and second switches are electrically connected to the control module. If the input voltage is smaller than a predetermined value, the control module will output a control pulse to the second switch, and the second switch will conduct and drive the power storage element to boost the input voltage to generate a compensating current in a timing cycle, and the second switch will cut off and allow the compensating current to be converted into a voltage form by the conversion element and outputted in another timing cycle.
    Type: Application
    Filed: April 15, 2015
    Publication date: October 20, 2016
    Inventors: KE-HORNG CHEN, SHAO-WEI CHIU, CHUN-CHIEH KUO, SHIH-PING TU, CHENG-PO HSIAO
  • Publication number: 20160190823
    Abstract: An optimal battery charging method and circuit for automatically regulating an output current to an energy storage load includes the steps of using a first-status current and a second-status current of the output current to obtain the energy storage load, analyzing the second-status voltage and the first-status voltage to obtain an equivalent resistance parameter of the energy storage load, and using the equivalent resistance parameter to compute a charging power loss of the energy storage load to regulate an output cycle of the output current, so that the energy storage load can be charged at constant temperature to achieve the effect of high charging efficiency.
    Type: Application
    Filed: December 31, 2014
    Publication date: June 30, 2016
    Inventors: SHAO-WEI CHIU, KE-HORNG CHEN, CHUN-CHIEH KUO, SHIH-PING TU, YU-HSIEN HE, CHENG-PO HSIAO
  • Publication number: 20160165682
    Abstract: An LED driving circuit of a multi-stage switch bulb lamp includes a power modulation module having a first switch, a second switch, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor and a fourth resistor. The first and second switches are respectively and serially connected to the first and second transistors, the first transistor is electrically connected to the second resistor, the other end of the second resistor is serially connected to the third resistor to form a reference voltage node and has a reference voltage, the first and second transistors are electrically connected to the reference voltage node, the other end of the third resistor is serially connected to the fourth resistor, and the second transistor is electrically connected to the third resistor. The first and second switches may be turned on/off to adjust the reference voltage value and change the power.
    Type: Application
    Filed: February 13, 2015
    Publication date: June 9, 2016
    Inventors: CHIH-HSIEN WU, WEI CHANG, HUAN-YING LU, KAI-CHENG CHUANG, SHAO-WEI CHIU
  • Patent number: 9357602
    Abstract: In an LED dimming and driving method and its circuit, a receiver, a current source and a controller are installed in a dimming module, and after the receiver has received a dimming signal, the current source is driven to output a current with a magnitude corresponsive to the dimming signal, and then after the controller has converted the current into a voltage level by a terminal resistor, the magnitude of the driving current of the LED is adjusted according to the voltage level to improve a linear dimming accuracy.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: May 31, 2016
    Assignee: Anwell Semiconductor Corp.
    Inventors: Ke-Horng Chen, Shao-Wei Chiu, Chun-Chieh Kuo, Shih-Ping Tu, Kai-Chang Chuang
  • Publication number: 20160087535
    Abstract: A self-excited power conversion circuit for secondary side control output power includes a comparator unit and a transistor installed directly in a secondary side output module, and the comparator unit is electrically coupled to at least one load, and the transistor is electrically coupled between to a conversion module of the circuit and the load. The comparator unit is provided for adjusting the duty cycle of the transistor after detecting the amount of energy outputted from the conversion module to the load from, so as to adjust the amount of energy actually received by the load to achieve a constant power effect.
    Type: Application
    Filed: September 19, 2014
    Publication date: March 24, 2016
    Inventors: CHENG-PO HSIAO, CHUNG-HSIN HUANG, KE-HORNG CHEN, CHUN-CHIEH KUO, SHIH-PING TU, SHAO-WEI CHIU
  • Publication number: 20150351184
    Abstract: A self-excited TRIAC dimming circuit applied in a panel light includes a dimming module and at least one conversion module, and a power factor controller (PFC) is installed in the dimming module, and the conversion module is a self-excited electronic isolation transformer, and the TRIAC PFC is integrated with the circuit structure of a self-excited electronic transformer to improve the overall circuit stability, so that the panel light complies with a high safety standard to enhance product applicability and competitiveness.
    Type: Application
    Filed: August 21, 2014
    Publication date: December 3, 2015
    Inventors: Wei Chang, Chih-Hsien Wu, Kai-Cheng Chuang, Shao-Wei Chiu, Cheng-Han Hung
  • Patent number: 9198243
    Abstract: An LED driver circuit for supplying a TRIAC holding current by using a controllable current source has a single-stage power factor correction circuit architecture, and the circuit receives an input voltage received by a conversion module of the controllable current source to form an operating current for driving an LED light source to emit light and monitoring the change of the input voltage by a control chip, and adopts a switching method of a fixed cut-off time of a switch unit, so that the controllable current source outputs a constant operating current in a standard peak value to achieve the constant current status during the operation of the LED light source while assuring the operating current is always greater than a holding current required by the TRIAC element when the TRIAC element is conducted.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: November 24, 2015
    Assignee: Unity Opto Technology Co., Ltd.
    Inventors: Chih-Hsien Wu, Wei Chang, Kai-Cheng Chuang, Shao-Wei Chiu
  • Patent number: 9072149
    Abstract: An LED driving device with open circuit protection and color temperature and brightness adjustment is applied in a lamp to drive LEDs which are divided into strings, and at least one string is formed by connecting blue light diodes in series, and the remaining strings are formed by connecting yellow light LEDs in series, and at least one of the yellow light strings is connected to the blue light string in parallel and then connected to the remaining strings in series to form a node. The LED driving device employs a switch to conduct the blue or yellow light string to change the color temperature of the emitted light of the lamp, and a power input pin of a control chip is electrically coupled to the node. If there is an open circuit caused by an abnormality of the LEDs, the operation will be stopped to provide protection.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: June 30, 2015
    Assignee: Unity Opto Technology Co., Ltd.
    Inventors: Chih-Hsien Wu, Wei Chang, Huan-Ying Lu, Kai-Cheng Chuang, Shao-Wei Chiu
  • Publication number: 20150173140
    Abstract: An LED driver circuit for supplying a TRIAC holding current by using a controllable current source has a single-stage power factor correction circuit architecture, and the circuit receives an input voltage received by a conversion module of the controllable current source to form an operating current for driving an LED light source to emit light and monitoring the change of the input voltage by a control chip, and adopts a switching method of a fixed cut-off time of a switch unit, so that the controllable current source outputs a constant operating current in a standard peak value to achieve the constant current status during the operation of the LED light source while assuring the operating current is always greater than a holding current required by the TRIAC element when the TRIAC element is conducted.
    Type: Application
    Filed: March 7, 2014
    Publication date: June 18, 2015
    Inventors: CHIH-HSIEN WU, WEI CHANG, KAI-CHENG CHUANG, SHAO-WEI CHIU
  • Patent number: 9013108
    Abstract: An LED element with a color light enhancement function is a two-terminal element for receiving a driving current to emit light and includes at least one blue LED chip, at least one red LED chip and a three-way compensator. The three-way compensator intercepts a driving current passing through the blue LED chip depending on a proportion value according to a change of working temperature and adjusts the amount of current flowing into the red LED chip. If the working temperature exceeds a default value, an input terminal of the three-way compensator is triggered to intercept the driving current and generate and output a set current to the red LED chip to compensate an attenuation of the red LED chip caused by high temperature. The LED element will not be changed its intensity after a prolonged period of usage.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: April 21, 2015
    Assignee: Anwell Semiconductor Corp.
    Inventors: Shih-Ping Tu, Ke-Horng Chen, Chun-Chieh Kuo, Shao-Wei Chiu, Cheng-Po Hsiao
  • Publication number: 20150097489
    Abstract: An LED driving device with open circuit protection and color temperature and brightness adjustment is applied in a lamp to drive LEDs which are divided into strings, and at least one string is formed by connecting blue light diodes in series, and the remaining strings are formed by connecting yellow light LEDs in series, and at least one of the yellow light strings is connected to the blue light string in parallel and then connected to the remaining strings in series to form a node. The LED driving device employs a switch to conduct the blue or yellow light string to change the color temperature of the emitted light of the lamp, and a power input pin of a control chip is electrically coupled to the node. If there is an open circuit caused by an abnormality of the LEDs, the operation will be stopped to provide protection.
    Type: Application
    Filed: November 21, 2013
    Publication date: April 9, 2015
    Applicant: UNITY OPTO TECHNOLOGY CO., LTD.
    Inventors: CHIH-HSIEN WU, WEI CHANG, HUAN-YING LU, KAI-CHENG CHUANG, SHAO-WEI CHIU
  • Patent number: 8941328
    Abstract: Disclosed is a variable power dimming control circuit for driving and linearly adjusting the illumination brightness of a plurality of light emitting diodes (LEDs), and the circuit includes a dimming stabilization unit and a control unit. The control unit is provided for detecting an input current of a circuit, and the dimming stabilization unit is driven for outputting a holding current when the input power is smaller than a standard, and stopping the output the holding current when the input power is greater than the standard. When the LEDs are dimmed to low luminance, a chip controls the operation of the dimming stabilization unit to assure the stability of the dimming operation of a TRIAC. When the LEDs are adjusted to high or full brightness, the chip stops the output of the holding current to reduce unnecessary power consumption and enhance the overall circuit performance effectively.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: January 27, 2015
    Assignee: Unity Opto Technology Co., Ltd.
    Inventors: Chih-Hsien Wu, Wei Chang, Huan-Ying Lu, Kai-Cheng Chuang, Shao-Wei Chiu
  • Patent number: 8941323
    Abstract: A ceiling lamp adopting a non-separating driver circuit includes a conversion module and a control module. The conversion module converts an input voltage into an operating voltage to drive the LEDs and forming a driving current, and the control module monitors the operating voltage and the driving current to adjust the operating cycle of the conversion module, change the output voltage value of the operating voltage, and linearly change the driving current at a constant current state. The conversion module just executes the power conversion for one time to provide the driving power of the LEDs instead of using the conventional driving method that executes a two-stage power conversion by a separating power converter and a negative booster of the conventional ceiling lamp. Therefore, the ceiling lamp adopting a non-separating driver circuit is capable of lowering the circuit cost and improving the operating efficiency.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: January 27, 2015
    Assignee: Unity Opto Technology Co., Ltd.
    Inventors: Chih-Hsien Wu, Wei Chang, Kai-Cheng Chuang, Shao-Wei Chiu
  • Publication number: 20150008826
    Abstract: A ceiling lamp adopting a non-separating driver circuit includes a conversion module and a control module. The conversion module converts an input voltage into an operating voltage to drive the LEDs and forming a driving current, and the control module monitors the operating voltage and the driving current to adjust the operating cycle of the conversion module, change the output voltage value of the operating voltage, and linearly change the driving current at a constant current state. The conversion module just executes the power conversion for one time to provide the driving power of the LEDs instead of using the conventional driving method that executes a two-stage power conversion by a separating power converter and a negative booster of the conventional ceiling lamp. Therefore, the ceiling lamp adopting a non-separating driver circuit is capable of lowering the circuit cost and improving the operating efficiency.
    Type: Application
    Filed: September 13, 2013
    Publication date: January 8, 2015
    Applicant: UNITY OPTO TECHNOLOGY CO., LTD.
    Inventors: CHIH-HSIEN WU, WEI CHANG, KAI-CHENG CHUANG, SHAO-WEI CHIU
  • Patent number: 8901854
    Abstract: Disclosed is a multi-segment LED driving circuit used in an AC operating mode for outputting a drive current to drive a plurality of serially connected LED strings. The LED driving circuit includes at least one detection part, at least one comparison part and at least one adjusting part. The detection part detects an input voltage and an output voltage at both ends of each string and its next string to form a detected value provided for the comparison part to compare the detected value with a reference value to turn on or off the adjusting part so as to control the strings through which the drive current passes and then sequentially drives the strings to emit light. The LED driving circuit can adjust the load of the circuit immediately based on the change of voltage value of the AC power to ensure the stability of the drive current.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: December 2, 2014
    Assignee: Anwell Semiconductor Corp.
    Inventors: Shao-Wei Chiu, Chun-Chieh Kuo, Cheng-Po Hsiao, Shih-Ping Tu
  • Publication number: 20140333215
    Abstract: Disclosed is a multi-segment LED driving circuit used in an AC operating mode for outputting a drive current to drive a plurality of serially connected LED strings. The LED driving circuit includes at least one detection part, at least one comparison part and at least one adjusting part. The detection part detects an input voltage and an output voltage at both ends of each string and its next string to form a detected value provided for the comparison part to compare the detected value with a reference value to turn on or off the adjusting part so as to control the strings through which the drive current passes and then sequentially drives the strings to emit light. The LED driving circuit can adjust the load of the circuit immediately based on the change of voltage value of the AC power to ensure the stability of the drive current.
    Type: Application
    Filed: May 8, 2013
    Publication date: November 13, 2014
    Applicant: ANWELL SEMICONDUCTOR CORP.
    Inventors: SHAO-WEI CHIU, CHUN-CHIEH KUO, CHENG-PO HSIAO, SHIH-PING TU