David R Ramirez

US Patent:

20190145926, May 16, 2019

Filed:

Mar 21, 2017

Appl. No.:

16/097481

Inventors:

- Albuquerque NM, US
Payman ZARKESH-HA - Albuquerque NM, US
David A. RAMIREZ - Albuquerque NM, US
Brianna KLEIN - Albuquerque NM, US
Francesca CAVALLO - Albuquerque NM, US
Seyedeh Marziyeh ZAMIRI - Albuquerque NM, US
Alireza KAZEMI - Albuquerque NM, US
Clark KADLEC - Albuquerque NM, US

International Classification:

G01N 27/414
H01L 29/20
H01L 31/113
H01L 31/0304
H01L 31/18

Abstract:

A detector or sensor including a transistor having a sensor element that generates a current when exposed to a stimulus such as light or a chemical, in one implementation, the sensor element is positioned between a transistor gate and a transistor channel. When the sensor element is not being exposed to the stimulus, the transistor outputs a first voltage on a transistor drain contact when the transistor inverts. When the sensor element is being exposed to the stimulus, the transistor outputs a second voltage on the transistor drain contact when the transistor inverts, where the second voltage is higher than the first voltage.

US Patent:

20180333105, Nov 22, 2018

Filed:

Nov 24, 2015

Appl. No.:

15/531135

Inventors:

- Albuquerque NM, US
Sanjay Krishna - Albuquerque NM, US
Sebastian Eugenio Godoy - Albuquerque NM, US
David A. Ramirez - Albuquerque NM, US

International Classification:

A61B 5/00
G06T 7/00
G06T 7/277
G06T 7/13
G06T 7/174
G06T 7/40
G06T 7/68
G06T 7/62
G06T 7/90
G06K 9/62
A61B 5/01
G16H 50/20

Abstract:

A technique for classifying lesions as malignant or benign is disclosed. The technique can include: cooling an area of skin including a lesion of a patient to initiate a warm-up process; receiving a temporal sequence of thermal images of the area of skin representing a thermal recovery of the area of skin, the temporal sequence of thermal images generated by an infrared camera; generating a temporal profile of the thermal recovery based on the temporal sequence of thermal images; analyzing temporal statistical properties of the temporal profile; determining a malignancy probability that the lesion is malignant based on an analysis of the temporal profile, wherein the determining includes extracting one or more statistical features based on continuous-time stochastic signals in the sequence of thermal images; and classifying the lesion based on the malignancy probability.

US Patent:

20160254867, Sep 1, 2016

Filed:

May 6, 2016

Appl. No.:

15/148873

Inventors:

- Albuquerque NM, US
- Sheffield, GB
Sanjay Krishna - Albuquerque NM, US
Luke F. Lester - Albuquerque NM, US
David A. Ramirez - Albuquerque NM, US
Payman Zarkesh-Ha - Albuquerque NM, US

International Classification:

H04B 10/67
H01L 31/0304
G01J 1/44
H01L 31/0735

Abstract:

Apparatus, systems, and methods relate to use of a time-varying bias for application to an avalanche photodiode. Embodiments include systems and methods of determining an appropriate time-varying bias for application to an avalanche photodiode in linear mode. Avalanche photodiode having appropriate parameters may also be determined. Additional apparatus, systems, and methods are disclosed.