Patents by Inventor Sean Lai

Sean Lai 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).

  • Method for correcting errors associated with asynchronous timing offsets between transmit and receive clocks in MRI wireless radiofrequency coils
    Patent number: 9897677
    Abstract: A method and apparatus correcting errors associated with timing offsets in radiofrequency coils. The method and apparatus include a memory element and a controller. The controller is configured to execute a set of instructions to receive data of a plurality of signals, the plurality of signals comprising at least one projection echo. The controller is also configured to identify a plurality of offsets of the plurality of signals based on the at least one projection echo. The controller is also configured to apply the plurality of offsets to a k-space of the plurality of signals.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: February 20, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yusuf A. Bhagat, Sean Lai, Insoo Kim, Ying Dong, Zhouyue Pi, Xu Zhu
  • System and methods for multi-input switching regulator
    Patent number: 9857819
    Abstract: Various embodiments of the invention provide for a multi-input switch regulator that is controlled to selectively receive power from one of multiple power sources in order to extend the range of available battery voltages at which the regulator can operate. Certain embodiments accomplish this by using an internal adaptive control circuit to coordinate multiple high-side switches to operate with a low-side switch to generate a desired output voltage.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: January 2, 2018
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Yang Lu, Sean Lai, Rui Liu, Hongguang Dong, Dale Kemper
  • Adaptive input current limiting for switch-mode chargers
    Patent number: 9166442
    Abstract: A system includes a voltage regulator module, a voltage comparator module, and a current limiting module. The voltage regulator module regulates an input voltage supplied by a power supply and supplies an output current to a load. The voltage comparator module compares the input voltage to a first threshold. The current limiting module decreases the output current when the input voltage decreases to less than or equal to the first threshold, decreases the output current until the input voltage increases to greater than the first threshold, and decreases the output current by an additional predetermined amount after the input voltage increases to greater than the first threshold.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: October 20, 2015
    Assignee: MAXIM INTEGRATED PRODUCTS, INC.
    Inventors: Mark A. Belch, Kevin Dowdy, Sean Lai, Brett Miwa, David Harrington, David Stearns, Oscar Blyde, Rui Liu
  • METHOD FOR CORRECTING ERRORS ASSOCIATED WITH ASYNCHRONOUS TIMING OFFSETS BETWEEN TRANSMIT AND RECEIVE CLOCKS IN MRI WIRELESS RADIOFREQUENCY COILS
    Publication number: 20150066413
    Abstract: A method and apparatus correcting errors associated with timing offsets in radiofrequency coils. The method and apparatus include a memory element and a controller. The controller is configured to execute a set of instructions to receive data of a plurality of signals, the plurality of signals comprising at least one projection echo. The controller is also configured to identify a plurality of offsets of the plurality of signals based on the at least one projection echo. The controller is also configured to apply the plurality of offsets to a k-space of the plurality of signals.
    Type: Application
    Filed: September 2, 2014
    Publication date: March 5, 2015
    Inventors: Yusuf A. Bhagat, Sean Lai, Insoo Kim, Ying Dong, Zhouyue Pi, Xu Zhu