Patents by Inventor Yi-Min Shiu

Yi-Min Shiu 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).

  • Patent number: 10476374
    Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: November 12, 2019
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yi-Min Shiu, Isaac Y. Chen
  • Publication number: 20190058390
    Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Inventors: Yi-Min Shiu, Isaac Y. Chen
  • Publication number: 20190058391
    Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Inventors: Yi-Min Shiu, Isaac Y. Chen
  • Patent number: 10181785
    Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: January 15, 2019
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yi-Min Shiu, Isaac Y. Chen
  • Publication number: 20180159423
    Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
    Type: Application
    Filed: January 18, 2018
    Publication date: June 7, 2018
    Inventors: Yi-Min Shiu, Isaac Y. Chen
  • Patent number: 9912224
    Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: March 6, 2018
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yi-Min Shiu, Isaac Y. Chen
  • Patent number: 9755695
    Abstract: The present invention discloses an input/output (I/O) signal processing circuit and processing method. The I/O signal processing circuit includes a level adjustable I/O circuit and an adjustment circuit. The I/O signal processing circuit includes an output driver and/or an input comparator. The output driver transmits an output signal via a signal transmission line according to an output data. The output driver has an adjustable high operation voltage level and an adjustable low operation voltage level, which determine a high level and a low level of the output signal, respectively. The input comparator receives an input signal via the signal transmission line and comparing the input signal with an adjustable reference voltage, so as to generate an input data. The adjustment circuit generates an adjustment signal according to voltage drop related information, to correspondingly adjust the adjustable high and low operation voltage level and/or the adjustable reference voltage.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: September 5, 2017
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yi-Min Shiu, Chao-Chi Chen, Pei-Sheng Tsu
  • Patent number: 9753077
    Abstract: An abnormal connection detection method is used between a power supplier and a power receiver. The power supplier and the power receiver are connected through a cable. The cable includes positive and negative power transmission lines. The abnormal connection detection method includes: providing an output voltage from the power supplier, wherein the output voltage is lower than a predetermined voltage threshold; detecting, according to the output voltage, whether an output current generated by the power supplier is higher than a predetermined current threshold; and when the output current is higher than the predetermined current threshold, determining that an abnormal connection occurs between the power supplier and the power receiver.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: September 5, 2017
    Assignee: RICHTECK TECHNOLOGY CORPORATION
    Inventors: Yi-Min Shiu, Yi-Shan Chu, Shih-Jen Yang
  • Publication number: 20160329730
    Abstract: A mobile device charging system includes a mobile charger and a mobile device. The mobile charger includes: an adaptive power converter for receiving data signals and generating a DC signal; an output terminal; and a charging cable for transmitting the data signals and receiving the DC signal to provide an output signal at the output terminal. The mobile device includes: a device-side connector for receiving power transmitted from the output terminal; and a charging control circuit for generating and transmitting the data signals to the adaptive power converter through the device-side connector and the charging cable. The adaptive power converter adjusts the magnitude of the DC signal according to the data signals to control the voltage drop of the charging cable to be less than a predetermined threshold.
    Type: Application
    Filed: May 5, 2016
    Publication date: November 10, 2016
    Applicant: Richtek Technology Corporation
    Inventors: Yi-Min SHIU, Yu-Chang CHEN, Chih-Wei CHI, Chen-Hui CHAN
  • Publication number: 20160241304
    Abstract: The present invention discloses an input/output (I/O) signal processing circuit and processing method. The I/O signal processing circuit includes a level adjustable I/O circuit and an adjustment circuit. The I/O signal processing circuit includes an output driver and/or an input comparator. The output driver transmits an output signal via a signal transmission line according to an output data. The output driver has an adjustable high operation voltage level and an adjustable low operation voltage level, which determine a high level and a low level of the output signal, respectively. The input comparator receives an input signal via the signal transmission line and comparing the input signal with an adjustable reference voltage, so as to generate an input data. The adjustment circuit generates an adjustment signal according to voltage drop related information, to correspondingly adjust the adjustable high and low operation voltage level and/or the adjustable reference voltage.
    Type: Application
    Filed: April 12, 2016
    Publication date: August 18, 2016
    Applicant: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yi-Min Shiu, Chao-Chi Chen, Pei-Sheng Tsu
  • Patent number: 9344148
    Abstract: The present invention discloses an input/output (I/O) signal processing circuit and processing method. The I/O signal processing circuit includes a level adjustable I/O circuit and an adjustment circuit. The I/O signal processing circuit includes an output driver and/or an input comparator. The output driver transmits an output signal via a signal transmission line according to an output data. The output driver has an adjustable high operation voltage level and an adjustable low operation voltage level, which determine a high level and a low level of the output signal, respectively. The input comparator receives an input signal via the signal transmission line and comparing the input signal with an adjustable reference voltage, so as to generate an input data. The adjustment circuit generates an adjustment signal according to voltage drop related information, to correspondingly adjust the adjustable high and low operation voltage level and/or the adjustable reference voltage.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: May 17, 2016
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yi-Min Shiu, Chao-Chi Chen, Pei-Sheng Tsu
  • Publication number: 20160033566
    Abstract: An abnormal connection detection method is used between a power supplier and a power receiver. The power supplier and the power receiver are connected through a cable. The cable includes positive and negative power transmission lines. The abnormal connection detection method includes: providing an output voltage from the power supplier, wherein the output voltage is lower than a predetermined voltage threshold; detecting, according to the output voltage, whether an output current generated by the power supplier is higher than a predetermined current threshold; and when the output current is higher than the predetermined current threshold, determining that an abnormal connection occurs between the power supplier and the power receiver.
    Type: Application
    Filed: July 20, 2015
    Publication date: February 4, 2016
    Inventors: Yi-Min Shiu, Yi-Shan Chu, Shih-Jen Yang
  • Publication number: 20160020825
    Abstract: The present invention discloses an input/output (I/O) signal processing circuit and processing method. The I/O signal processing circuit includes a level adjustable I/O circuit and an adjustment circuit. The I/O signal processing circuit includes an output driver and/or an input comparator. The output driver transmits an output signal via a signal transmission line according to an output data. The output driver has an adjustable high operation voltage level and an adjustable low operation voltage level, which determine a high level and a low level of the output signal, respectively. The input comparator receives an input signal via the signal transmission line and comparing the input signal with an adjustable reference voltage, so as to generate an input data. The adjustment circuit generates an adjustment signal according to voltage drop related information, to correspondingly adjust the adjustable high and low operation voltage level and/or the adjustable reference voltage.
    Type: Application
    Filed: June 30, 2015
    Publication date: January 21, 2016
    Applicant: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yi-Min Shiu, Chao-Chi Chen, Pei-Sheng Tsu
  • Publication number: 20150372601
    Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
    Type: Application
    Filed: June 10, 2015
    Publication date: December 24, 2015
    Applicant: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yi-Min Shiu, Isaac Y. Chen