Tuan K Duong

6513023, Jan 28, 2003

Oct 1, 1999

09/412199

Tuan A. Duong - Glendora CA

The United States of America as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC

G06N 302

706 26, 706 34, 706 39, 706 40, 708801

A neural network circuit is provided having a plurality of circuits capable of charge storage. Also provided is a plurality of circuits each coupled to at least one of the plurality of charge storage circuits and constructed to generate an output in accordance with a neuron transfer function. Each of a plurality of circuits is coupled to one of the plurality of neuron transfer function circuits and constructed to generate a derivative of the output. A weight update circuit updates the charge storage circuits based upon output from the plurality of transfer function circuits and output from the plurality of derivative circuits. In preferred embodiments, separate training and validation networks share the same set of charge storage circuits and may operate concurrently. The validation network has a separate transfer function circuits each being coupled to the charge storage circuits so as to replicate the training networks coupling of the plurality of charge storage to the plurality of transfer function circuits. The plurality of transfer function circuits may be constructed each having a transconductance amplifier providing differential currents combined to provide an output in accordance with a transfer function.

7640116, Dec 29, 2009

Sep 7, 2006

11/518535

Tuan Duong - Glendora CA, US
Margaret Ryan - Pasadena CA, US

California Institute of Technology - Pasadena CA

G01N 33/00

702 22, 702 27, 702 30, 702 32

The present invention relates to a space-invariant independent component analysis and electronic nose for detection of selective chemicals in an unknown environment, and more specifically, an approach to analysis of sensor responses to mixtures of unknown chemicals by an electronic nose in an open and changing environment. It is intended to fill the gap between an alarm, which has little or no ability to distinguish among chemical compounds causing a response, and an analytical instrument, which can distinguish all compounds present but with no real-time or continuous event monitoring ability.

7711157, May 4, 2010

Aug 1, 2006

11/498531

Tuan A. Duong - Glendora CA, US
Vu A. Duong - Rosemead CA, US
Allen R. Stubberud - Irvine CA, US

California Institute of Technology - Pasadena CA

G06K 9/00
G06K 9/46

382118, 382165, 382203

A process for object identification comprising extracting object shape features and object color features from digital images of an initial object and storing the extracted object shape features and object color features in a database where said extracted object shape features and object color features are associated with a unique identifier associated with said object and repeating the first step for a plurality of different objects. Then extracting object shape features and object color features from a digital image of an object whose identity is being sought and correlating the extracted object shape features and object color features of the object whose identity is being sought with the extracted object shape features and object color features previously stored in the database. If a first correlation of the extracted object shape features is better than a first threshold value for a given object associated with an identifier in the database and if a second correlation of the extracted object color features is better than a second threshold value for the given object, then making a determination that the object whose identity is being sought is said given object.

8204927, Jun 19, 2012

Mar 7, 2011

13/042196

Tuan A. Duong - Glendora CA, US
Vu A. Duong - Rosemead CA, US

California Institute of Technology - Pasadena CA

G06G 7/02

708819

A system and method for cognitive processing of sensor data. A processor array receiving analog sensor data and having programmable interconnects, multiplication weights, and filters provides for adaptive learning in real-time. A static random access memory contains the programmable data for the processor array and the stored data is modified to provide for adaptive learning.

8340435, Dec 25, 2012

Jun 8, 2010

12/796631

Tuan A. Duong - Glendora CA, US
Vu A. Duong - Rosemead CA, US
Allen R. Stubberud - Irvine CA, US

California Institute of Technology - Pasadena CA

G06K 9/46

382203, 382190, 382195

A method for object recognition using shape and color features of the object to be recognized. An adaptive architecture is used to recognize and adapt the shape and color features for moving objects to enable object recognition.

8426806, Apr 23, 2013

Dec 20, 2010

12/973843

Tuan A. Duong - Glendora CA, US
Isik Kanik - Monrovia CA, US
Vu A. Duong - Rosemead CA, US

California Institute of Technology - Pasadena CA

B01D 59/44

250282, 250281

Differential mobility spectrometer with spatial ion detector and methods related thereto are disclosed. The use of one or more spatial detector within differential mobility spectrometry can provide for the identification and separation of ions with similar mobility and mass.

20120206188, Aug 16, 2012

Feb 14, 2012

13/396486

Tuan Anh Duong - Glendora CA, US

California Institute of Technology - Pasadena CA

H03K 17/687

327437, 327434

Systems and methods in accordance with embodiments of the invention are disclosed that include MOSFET transistor operation by adjusting V, or the voltage applied to the body terminal of the MOSFET transistor, to control the threshold voltage (V) in order to minimize leakage current and increase response time. One embodiment includes a n-channel metal-oxide-semiconductor field-effect transistor (NMOS), including: a gate terminal; a source terminal; a drain terminal; a body terminal; and control circuitry, where the control circuitry is configured to bias the body terminal at a first voltage when voltage applied to the gate terminal turns the transistor OFF and a second voltage when voltage applied to the gate terminal turns the transistor ON; and where the first voltage is of a lower value than the second voltage.

20130342681, Dec 26, 2013

Jun 24, 2013

13/925583

Tuan A. DUONG - GLENDORA CA, US

G06K 9/32

348135, 382103

A CMOS imager integrated circuit using compressive sensing and bio-inspired detection is presented which integrates novel functions and algorithms within a novel hardware architecture enabling efficient on-chip implementation.