Patents by Inventor Ying-Hsin Hsing

Ying-Hsin Hsing 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).

  • Low pin count LED driver integrated circuit
    Patent number: 8729820
    Abstract: A LED driver integrated circuit has a voltage input pin, a voltage output pin, a capacitor pin, and a switching circuit connected to the capacitor pin and the voltage output pin. The capacitor pin and the voltage output pin are for a flying capacitor to be connected therebetween, and thus the switching circuit and the flying capacitor establish a charge pump to convert an input voltage received by the voltage input pin into an output voltage at the voltage output pin.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: May 20, 2014
    Assignee: Richtek Technology Corp.
    Inventors: Tsung-Wei Huang, Shui-Mu Lin, Pao-Hsun Yu, Ying-Hsin Hsing
  • Charger with detection of power input type
    Patent number: 8698449
    Abstract: A charger for a portable device includes a USB detector connected to a data pin to detect the effective resistance on the data pin before a USB transceiver is enabled, to identify USB or adapter plug in and control a charging current for a battery accordingly.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: April 15, 2014
    Assignee: Richtek Technology Corp.
    Inventors: Li-Wei Lee, Nien-Hui Kung, Kwan-Jen Chu, Ying-Hsin Hsing
  • Charger and portable device having the same
    Patent number: 8648573
    Abstract: A charger for a portable device includes a USB detector connected to a data pin to detect the effective resistance on the data pin before a USB transceiver is enabled, to identify USB or adapter plug in and control a charging current for a battery accordingly.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: February 11, 2014
    Assignee: Richtek Technology Corp.
    Inventors: Li-Wei Lee, Nien-Hui Kung, Kwan-Jen Chu, Ying-Hsin Hsing
  • Charger and portable device having the same
    Patent number: 8525484
    Abstract: A charger for a portable device includes a USB detector connected to a data pin to detect the effective resistance on the data pin before a USB transceiver is enabled, to identify USB or adapter plug in and control a charging current for a battery accordingly.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: September 3, 2013
    Assignee: Richtek Technology Corp.
    Inventors: Li-Wei Lee, Nien-Hui Kung, Kwan-Jen Chu, Ying-Hsin Hsing
  • CHARGER AND PORTABLE DEVICE HAVING THE SAME
    Publication number: 20130002195
    Abstract: A charger for a portable device includes a USB detector connected to a data pin to detect the effective resistance on the data pin before a USB transceiver is enabled, to identify USB or adapter plug in and control a charging current for a battery accordingly.
    Type: Application
    Filed: September 11, 2012
    Publication date: January 3, 2013
    Applicant: RICHTEK TECHNOLOGY CORP.
    Inventors: Li-Wei LEE, Nien-Hui KUNG, Kwan-Jen CHU, Ying-Hsin HSING
  • CHARGER AND PORTABLE DEVICE HAVING THE SAME
    Publication number: 20130002196
    Abstract: A charger for a portable device includes a USB detector connected to a data pin to detect the effective resistance on the data pin before a USB transceiver is enabled, to identify USB or adapter plug in and control a charging current for a battery accordingly.
    Type: Application
    Filed: September 11, 2012
    Publication date: January 3, 2013
    Applicant: RICHTEK TECHNOLOGY CORP.
    Inventors: LI-WEI LEE, NIEN-HUI KUNG, KWAN-JEN CHU, YING-HSIN HSING
  • Overvoltage protection circuit for use in charger circuit system and charge circuit with overvoltage protection function
    Patent number: 8159195
    Abstract: The present invention discloses an overvoltage protection (OVP) circuit for use in a charger circuit system, comprising: a power transistor electrically connected between a voltage supply and a battery; an OVP circuit which turns off the transistor when a voltage supply exceeds a threshold value; and a multiplexing circuit electrically connected between an output of the OVP circuit and the gate of the transistor. The present invention also discloses a charger circuit with an OVP function, comprising: a single power transistor electrically connected between a voltage supply and a battery; an OVP control circuit which turns off the power transistor when a voltage supply exceeds a threshold value; and a charger control circuit which controls the gate of the power transistor to determine a charge current to the battery when the voltage supply does not reach the threshold value.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: April 17, 2012
    Assignee: Richtek Technology Corporation
    Inventors: Chien-Ping Lu, Nien-Hui Kung, Li-Wei Lee, Kwan-Jen Chu, Ying-Hsin Hsing, Chun-Tsung Chen
  • CHARGER AND PORTABLE DEVICE HAVING THE SAME
    Publication number: 20110043162
    Abstract: A charger for a portable device includes a USB detector connected to a data pin to detect the effective resistance on the data pin before a USB transceiver is enabled, to identify USB or adapter plug in and control a charging current for a battery accordingly.
    Type: Application
    Filed: August 16, 2010
    Publication date: February 24, 2011
    Applicant: RICHTEK TECHNOLOGY CORP.
    Inventors: LI-WEI LEE, NIEN-HUI KUNG, KWAN-JEN CHU, YING-HSIN HSING
  • LOW PIN COUNT LED DRIVER INTEGRATED CIRCUIT
    Publication number: 20110006697
    Abstract: A LED driver integrated circuit has a voltage input pin, a voltage output pin, a capacitor pin, and a switching circuit connected to the capacitor pin and the voltage output pin. The capacitor pin and the voltage output pin are for a flying capacitor to be connected therebetween, and thus the switching circuit and the flying capacitor establish a charge pump to convert an input voltage received by the voltage input pin into an output voltage at the voltage output pin.
    Type: Application
    Filed: July 7, 2010
    Publication date: January 13, 2011
    Applicant: RICHTEK TECHNOLOGY CORP.
    Inventors: TSUNG-WEI HUANG, SHUI-MU LIN, PAO-HSUN YU, YING-HSIN HSING
  • Overvoltage protection circuit for use in charger circuit system and charge circuit with overvoltage protection function
    Publication number: 20100066312
    Abstract: The present invention discloses an overvoltage protection (OVP) circuit for use in a charger circuit system, comprising: a power transistor electrically connected between a voltage supply and a battery; an OVP circuit which turns off the transistor when a voltage supply exceeds a threshold value; and a multiplexing circuit electrically connected between an output of the OVP circuit and the gate of the transistor. The present invention also discloses a charger circuit with an OVP function, comprising: a single power transistor electrically connected between a voltage supply and a battery; an OVP control circuit which turns off the power transistor when a voltage supply exceeds a threshold value; and a charger control circuit which controls the gate of the power transistor to determine a charge current to the battery when the voltage supply does not reach the threshold value.
    Type: Application
    Filed: March 10, 2009
    Publication date: March 18, 2010
    Inventors: Chien-Ping Lu, Nien-Hui Kung, Li-Wei Lee, Kwan-Jen Chu, Ying-Hsin Hsing, Chun-Tsung Chen