Khoa Dang Nguyen

US Patent:

20210303109, Sep 30, 2021

Filed:

Mar 27, 2020

Appl. No.:

16/832669

Inventors:

- Seoul, KR
Ankit Arora - Seattle WA, US
Khoa Nguyen - Seattle WA, US
Chang Hyun Lee - Seoul, KR
Suk Min Ahn - Seoul, KR
Prithvis Mohanty - Seattle WA, US

International Classification:

G06F 3/0482
H04L 29/08

Abstract:

Disclosed embodiments provide systems and methods implementing a web-browser plugin for providing requested information. A method for providing requested information comprises receiving, as a user interaction on a graphical user interface, a request to provide data associated with a target object presented on a web page, retrieving an object identifier associated with the target object based on a determined data accessibility, the object identifier incorporated in the web page, transmitting the retrieved object identifier to a plurality of systems storing data associated with the target object, the plurality of systems configured to provide data corresponding to the received object identifier in response to the received object identifier, receiving data responsive to transmitting the retrieved object, modifying the web page to include the received data, and presenting the web page on the graphical user interface.

US Patent:

20210304275, Sep 30, 2021

Filed:

Mar 31, 2020

Appl. No.:

16/835904

Inventors:

- Seoul, KR
Shuzheng LI - Seattle WA, US
Chang Hyun LEE - Seoul, KR
Han Sam JEON - Seoul, KR
Suk Min AHN - Seoul, KR
Tapan SHAH - Bellevue WA, US
Prithvis MOHANTY - Seattle WA, US
Khoa NGUYEN - Seattle WA, US

International Classification:

G06Q 30/06

Abstract:

Disclosed embodiments provide systems and methods for electronically determining a real-time registration. A method for electronically determining a real-time registration comprises receiving, from a user device, a request to register an item in a retail system and data associated with the item, determining a registration guarantee decision for the item, the registration decision specifying whether the item is or is not guaranteed, and registering the item in the retail system based on the determined registration guarantee decision. The method further comprises building a response for the determined registration guarantee decision and transmitting the response for the registration guarantee decision to a computing device associated with the retail system, wherein the registration guarantee decision comprises performing a comparison of attributes in the received data and attributes associated with items stored in the retail system to determine duplicate or similar items.

US Patent:

20170358979, Dec 14, 2017

Filed:

Jul 18, 2017

Appl. No.:

15/652849

Inventors:

- Redmond WA, US
Hach Nguyen - Lynnwood WA, US
Khoa Nguyen - Seattle WA, US
Peter Odell - Seattle WA, US
Sovann Song - Bothell WA, US

International Classification:

H02M 1/00
H02M 3/335

Abstract:

A circuit for providing dynamic output current sharing using average current mode control for active-reset and self-driven synchronous rectification with pre-bias startup and redundancy capabilities for power converters. The circuit communicates a secondary side feedback signal to a primary side via a bidirectional magnetic communicator that also provides a secondary voltage supply. Pre-bias startup is achieved by detection of the output current direction and controlling the gate signals of synchronous rectifiers. The circuit permits dynamic current sharing via a single-control signal and automatic master converter selection and promotion.

US Patent:

20160261194, Sep 8, 2016

Filed:

May 29, 2015

Appl. No.:

14/787565

Inventors:

- Redmond WA, US
Sovann Song - Bothell WA, US
Khoa Nguyen - Seattle WA, US

International Classification:

H02M 3/335
H02M 1/08

Abstract:

Systems and methods that provide control circuits having multiple sub-control inputs that control operation of a power electronics device (e.g., a power converter). Each of the multiple sub-control inputs are output from a separate sub-control circuit that includes a feedback circuit having an input tied to a common control node. The common control node is coupled to an input of a controller (e.g., a PWM controller). Outputs of each of the sub-control circuits are coupled to the common control node by a respective switch (e.g., diode, transistor, etc.) so that each of the sub-control circuits may be selectively coupled to the common control node to provide a control signal to a controller. Since components of each of the feedback compensations circuits are biased at a regulation voltage instead of a higher power supply voltage, the control circuit may switch between control modes with minimal delay.