Patents by Inventor Ren-Yi Chen

Ren-Yi Chen 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: 20240142237
    Abstract: A localization device and a localization method for a vehicle are provided. The localization device includes an inertia measurer, an encoder, an image capturing device, and a processor. The processor obtains an encoded data by the encoder to generate a first odometer data, obtains an inertial data by the inertia measurer to generate a heading angle estimation data, and obtains an environmental image data by the image capturing device to generate a second odometer data. In a first fusion stage, the processor fuses the heading angle estimation data and the first odometer data to generate first fusion data. In a second fusion stage, the processor fuses the first fusion data, the heading angle estimation data and the second odometer data to generate pose estimation data corresponding to the localization device.
    Type: Application
    Filed: January 5, 2023
    Publication date: May 2, 2024
    Applicant: Industrial Technology Research Institute
    Inventors: Yu-Jhong Chen, Pei-Jung Liang, Ren-Yi Huang
  • Patent number: 11545904
    Abstract: A power controller is in use of a power converter whose output voltage can be regulated at a first nominal output voltage or a second nominal output voltage less than the first nominal output voltage. An ON-time controller controls an ON time of a driving signal provided to a power switch according to a compensation signal. A frequency controller controls, based on the compensation signal and a feedback signal, a switching frequency of the driving signal. If the compensation signal has an input waveform and when the output voltage is regulated at the first or second nominal output voltage, the frequency controller provides first or second settling time to stabilize the switching frequency, respectively. The second settling time is longer than the first settling time.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: January 3, 2023
    Assignee: WELTREND SEMICONDUCTOR INC.
    Inventors: Yi Lun Shen, Ren Yi Chen
  • Patent number: 11056968
    Abstract: A power converter capable of performing over-voltage protection and over-temperature protection converts an input voltage into an output voltage. A power switch is connected in series with a primary winding between the input voltage and an input ground. A power controller with a multi-function pin controls the power switch to control a winding current through the primary winding. The power converter has a multi-purpose circuit with first and second resistors, a rectifier and a thermistor. A connection node makes the first and second resistors connected in series between two ends of an auxiliary winding. The rectifier and the thermistor are connected in parallel between the multi-function pin and the connection node. The power controller can perform over-voltage protection and over-temperature protection via the multi-purpose circuit and the multi-function pin.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: July 6, 2021
    Assignee: WELTREND SEMICONDUCTOR INC.
    Inventors: Chun-Teh Chen, Yi Lun Shen, Yu-Yun Huang, Ren Yi Chen
  • Patent number: 11050351
    Abstract: A control method is introduced to operate an ACF power converter under a non-complimentary mode. A high-side switch is turned ON at least twice within a switching cycle of a low-side switch, to provide at least two high-side ON times. One of the high-side ON times follows the end of demagnetization time of a transformer in the ACF power converter, and the other follows the end of the blanking time that controls the maximum switching frequency of the low-side switch.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: June 29, 2021
    Assignee: WELTREND SEMICONDUCTOR INC.
    Inventors: Mu-Chih Lin, Chun-Teh Chen, Ren-Yi Chen, Ming-Ying Kuo, Jeng-Cheng Liu
  • Publication number: 20210099094
    Abstract: A power controller is in use of a power converter whose output voltage can be regulated at a first nominal output voltage or a second nominal output voltage less than the first nominal output voltage. An ON-time controller controls an ON time of a driving signal provided to a power switch according to a compensation signal. A frequency controller controls, based on the compensation signal and a feedback signal, a switching frequency of the driving signal. If the compensation signal has an input waveform and when the output voltage is regulated at the first or second nominal output voltage, the frequency controller provides first or second settling time to stabilize the switching frequency, respectively. The second settling time is longer than the first settling time.
    Type: Application
    Filed: December 15, 2020
    Publication date: April 1, 2021
    Inventors: Yi Lun Shen, Ren Yi Chen
  • Publication number: 20210091672
    Abstract: A control method is introduced to operate an ACF power converter under a non-complimentary mode. A high-side switch is turned ON at least twice within a switching cycle of a low-side switch, to provide at least two high-side ON times. One of the high-side ON times follows the end of demagnetization time of a transformer in the ACF power converter, and the other follows the end of the blanking time that controls the maximum switching frequency of the low-side switch.
    Type: Application
    Filed: May 13, 2020
    Publication date: March 25, 2021
    Inventors: Mu-Chih LIN, Chun-Teh CHEN, Ren-Yi CHEN, Ming-Ying KUO, Jeng-Cheng LIU
  • Patent number: 10897205
    Abstract: A power controller is in use of a power converter whose output voltage can be regulated at a first nominal output voltage or a second nominal output voltage less than the first nominal output voltage. An ON-time controller controls an ON time of a driving signal provided to a power switch according to a compensation signal. A frequency controller controls, based on the compensation signal and a feedback signal, a switching frequency of the driving signal. If the compensation signal has an input waveform and when the output voltage is regulated at the first or second nominal output voltage, the frequency controller provides first or second settling time to stabilize the switching frequency, respectively. The second settling time is longer than the first settling time.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: January 19, 2021
    Assignee: WELTREND SEMICONDUCTOR INC.
    Inventors: Yi Lun Shen, Ren Yi Chen
  • Patent number: 10560028
    Abstract: A power controller in a switching mode power supply dynamically performs high-voltage charging to maintain an operating voltage. The power controller includes a PWM signal generator, a high-voltage charging circuit, and a high-voltage charging controller. The PWM signal generator provides a PWM signal to a power switch to perform power conversion regulating an output voltage of the switching mode power supply at a voltage rating. The high-voltage charging circuit has a high-voltage-tolerant switch connected between a line voltage and the operating voltage, wherein rectifying an AC voltage generates the line voltage. The high-voltage charging controller turns ON the high-voltage-tolerant switch to perform high-voltage charging at the same time when performing the power conversion. The high-voltage charging directs a charging current from the line voltage through the high-voltage-tolerant switch to charge the operating voltage.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: February 11, 2020
    Assignee: WELTREND SEMICONDUCTOR INC.
    Inventors: Chun-Teh Chen, Yi Lun Shen, Ren Yi Chen
  • Publication number: 20190103807
    Abstract: A power converter capable of performing over-voltage protection and over-temperature protection converts an input voltage into an output voltage. A power switch is connected in series with a primary winding between the input voltage and an input ground. A power controller with a multi-function pin controls the power switch to control a winding current through the primary winding. The power converter has a multi-purpose circuit with first and second resistors, a rectifier and a thermistor. A connection node makes the first and second resistors connected in series between two ends of an auxiliary winding. The rectifier and the thermistor are connected in parallel between the multi-function pin and the connection node. The power controller can perform over-voltage protection and over-temperature protection via the multi-purpose circuit and the multi-function pin.
    Type: Application
    Filed: September 27, 2018
    Publication date: April 4, 2019
    Inventors: Chun-Teh Chen, Yi Lun Shen, Yu-Yun Huang, Ren Yi Chen
  • Patent number: 10199942
    Abstract: Power supplies together with related over voltage protection methods and apparatuses. A power supply has a transformer including a primary winding and an auxiliary winding. A power switch is coupled to the primary winding and a sensing resistor coupled between the power switch and a grounding line. A multi-function terminal of a controller is coupled to the sensing resistor. A diode and a first resistor is coupled between the auxiliary winding and the multi-function terminal.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: February 5, 2019
    Assignee: Leadtrend Technology Corp.
    Inventors: Kuo-Chien Huang, Ren-Yi Chen
  • Publication number: 20190036458
    Abstract: A power controller is in use of a power converter whose output voltage can be regulated at a first nominal output voltage or a second nominal output voltage less than the first nominal output voltage. An ON-time controller controls an ON time of a driving signal provided to a power switch according to a compensation signal. A frequency controller controls, based on the compensation signal and a feedback signal, a switching frequency of the driving signal. If the compensation signal has an input waveform and when the output voltage is regulated at the first or second nominal output voltage, the frequency controller provides first or second settling time to stabilize the switching frequency, respectively. The second settling time is longer than the first settling time.
    Type: Application
    Filed: July 3, 2018
    Publication date: January 31, 2019
    Inventors: Yi Lun Shen, Ren Yi Chen
  • Patent number: 10164518
    Abstract: A power control device includes a switch control circuit, a first resistor, a second resistor, a third resistor, a sense node, a first comparator, a second comparator, a transformation circuit, and a logic control circuit. The switch control circuit outputs a driving signal according to a set signal and a reset signal. The first resistor, the second resistor, and the third resistor generate a reference voltage according to a feedback current. The sense node receives a current sample voltage. The first comparator outputs a first control signal according to the current sample voltage and the reference voltage. The transformation circuit outputs a short detection voltage according to the current sample voltage. The second comparator outputs the second control signal according to the current sample voltage and the short detection voltage. The logic control circuit gate outputs the reset signal according to the first control signal and the second control signal.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: December 25, 2018
    Assignee: WELTREND SEMICONDUCTOR INC.
    Inventors: Yi-Lun Shen, Ren-Yi Chen
  • Patent number: 10141836
    Abstract: A control circuit includes a set of alternating-current (AC) power receiver terminals, a rectification unit, a transistor, a switch, a detection unit, a comparison unit and a logic control circuit. The AC power receiver terminals receive and send external AC power to the rectification unit. The rectification unit outputs an operation voltage accordingly. The transistor is coupled between the rectification unit and the switch. The detection unit is coupled to the rectification unit to generate a first detection voltage and a second detection voltage according to the operation voltage. When the first detection signal is equal to the second detection signal, the comparison unit sends a comparison signal. The logic control circuit turns on the transistor and the switch if the comparison signal still has not been received after a predetermined time interval has elapsed.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: November 27, 2018
    Assignee: WELTREND SEMICONDUCTOR INC.
    Inventors: Ming-Ying Kuo, Yi-Lun Shen, Ren-Yi Chen
  • Publication number: 20180337592
    Abstract: A control circuit includes a set of alternating-current (AC) power receiver terminals, a rectification unit, a transistor, a switch, a detection unit, a comparison unit and a logic control circuit. The AC power receiver terminals receive and send external AC power to the rectification unit. The rectification unit outputs an operation voltage accordingly. The transistor is coupled between the rectification unit and the switch. The detection unit is coupled to the rectification unit to generate a first detection voltage and a second detection voltage according to the operation voltage. When the first detection signal is equal to the second detection signal, the comparison unit sends a comparison signal. The logic control circuit turns on the transistor and the switch if the comparison signal still has not been received after a predetermined time interval has elapsed.
    Type: Application
    Filed: May 17, 2018
    Publication date: November 22, 2018
    Inventors: Ming-Ying Kuo, Yi-Lun Shen, Ren-Yi Chen
  • Publication number: 20180337591
    Abstract: A power control device includes a switch control circuit, a first resistor, a second resistor, a third resistor, a sense node, a first comparator, a second comparator, a transformation circuit, and a logic control circuit. The switch control circuit outputs a driving signal according to a set signal and a reset signal. The first resistor, the second resistor, and the third resistor generate a reference voltage according to a feedback current. The sense node receives a current sample voltage. The first comparator outputs a first control signal according to the current sample voltage and the reference voltage. The transformation circuit outputs a short detection voltage according to the current sample voltage. The second comparator outputs the second control signal according to the current sample voltage and the short detection voltage. The logic control circuit gate outputs the reset signal according to the first control signal and the second control signal.
    Type: Application
    Filed: May 8, 2018
    Publication date: November 22, 2018
    Inventors: Yi-Lun Shen, Ren-Yi Chen
  • Publication number: 20180316273
    Abstract: A power controller in a switching mode power supply dynamically performs high-voltage charging to maintain an operating voltage. The power controller includes a PWM signal generator, a high-voltage charging circuit, and a high-voltage charging controller. The PWM signal generator provides a PWM signal to a power switch to perform power conversion regulating an output voltage of the switching mode power supply at a voltage rating. The high-voltage charging circuit has a high-voltage-tolerant switch connected between a line voltage and the operating voltage, wherein rectifying an AC voltage generates the line voltage. The high-voltage charging controller turns ON the high-voltage-tolerant switch to perform high-voltage charging at the same time when performing the power conversion. The high-voltage charging directs a charging current from the line voltage through the high-voltage-tolerant switch to charge the operating voltage.
    Type: Application
    Filed: April 10, 2018
    Publication date: November 1, 2018
    Inventors: Chun-Teh Chen, Yi Lun Shen, Ren Yi Chen
  • Publication number: 20170317593
    Abstract: Power supplies together with related over voltage protection methods and apparatuses. A power supply has a transformer including a primary winding and an auxiliary winding. A power switch is coupled to the primary winding and a sensing resistor coupled between the power switch and a grounding line. A multi-function terminal of a controller is coupled to the sensing resistor. A diode and a first resistor is coupled between the auxiliary winding and the multi-function terminal.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 2, 2017
    Inventors: Kuo-Chien Huang, Ren-Yi Chen
  • Patent number: 9735684
    Abstract: Power supplies together with related over voltage protection methods and apparatuses. A power supply has a transformer including a primary winding and an auxiliary winding. A power switch is coupled to the primary winding and a sensing resistor coupled between the power switch and a grounding line. A multi-function terminal of a controller is coupled to the sensing resistor. A diode and a first resistor is coupled between the auxiliary winding and the multi-function terminal.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: August 15, 2017
    Assignee: Leadtrend Technology Corp.
    Inventors: Kuo-Chien Huang, Ren-Yi Chen
  • Patent number: 9520791
    Abstract: Power supplies and power controllers are disclosed. A disclosed power supply has a power controller, a power switch, an auxiliary winding, a first circuit and a second circuit. The power controller is a monolithic integrated circuit with a multi-function pin and a gate pin. A control node of the power switch is coupled to the gate pin. The first circuit is coupled between the multi-function pin and the auxiliary winding and has a diode. The second circuit is coupled between the multi-function pin and a ground line, and has a thermistor.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: December 13, 2016
    Assignee: Leadtrend Technology Corp.
    Inventors: Chin-Ho Wu, Ren-Yi Chen, Yi-Shan Chu
  • Patent number: 9431911
    Abstract: A power controller provides a block time in response to an output current to an output load, and the block time determines a maximum switching frequency of a switching mode power supply. An exemplifying power controller has an output current estimator, a block time generator, and a pulse width modulator. The output current estimator provides a load representative signal in response to a discharge time of the inductive device and a current sense signal, wherein the current sense signal represents a current through an inductive device. The block time generator provides a block time based on the load representative signal. The pulse width modulator generates a pulse-width-modulation signal to control a power switch in response to a compensation signal, which is in response to the output voltage to the output load. The cycle time of the pulse-width-modulation signal is limited to be not less than the block time.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: August 30, 2016
    Assignee: GRENERGY OPTO INC.
    Inventors: Yi-Lun Shen, Ren-Yi Chen