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Deep Learning Algorithm for Detection of Cortical Arousal During Sleep
This invention is an end-to-end deep learning algorithm to detect cortical arousals during sleep using a one-night single lead electrocardiogram (ECG) signal. It is used to accurately detect arousal in home sleep tests, by reducing the false negative rate. The model combines both convolutional neural networks (CNN) and recurrent neural networks (RNN).
Background:
Sleep...
Published: 10/8/2024
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Inventor(s): Ao Li, Siteng Chen, Stuart Quan, Linda Powers, Janet Roveda
Keywords(s):
Category(s): Technology Classifications > Healthcare Portfolios > Sleep Disorders, Technology Classifications > Software & Information Technology > Health IT
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Time-Resolved Fluorescence Measurements in Real-Time
A prototype instrument that uses fast switching photomultiplier tube (PMT) to acquire real-time time-resolved fluorescence lifetime data has been developed and tested at the University of Arizona. The PMT detector can collect fluorescence data at rates as high as 200 MHz without the production of switching transients. The circuit system also demonstrates...
Published: 4/3/2023
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Inventor(s): Linda Powers, Jerrie Fairbanks, Varun Sridharan, Xiang Zhang, Xavier Ramus, Andrew Duncan
Keywords(s): fluorescence, high NA, high speed data collection, real-time data collection, time-resolved data collection
Category(s): Technology Classifications > Imaging & Optics > Medical Imaging, Technology Classifications > Imaging & Optics
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High Power, Configurable, Pico-Second LED Driver
This technology is a light-emitting diode (LED) driver capable of driving 190mApp of current through an LED. The driver can drive various kinds of LEDs and multiple LEDs in series with up to a total forward voltage of about 8V. The LED is modulated at a single frequency of 200kHz, but future designs could modulate at 1MHz by substituting slower components...
Published: 8/1/2024
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Inventor(s): Jerrie Fairbanks, Linda Powers, Janet Roveda
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Electronics > Assembly and Packaging, Technology Classifications > Engineering & Physical Sciences > Electronics > Analog Circuits, Technology Classifications > Engineering & Physical Sciences > Electronics > Digital Circuits, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Semiconductors, Technology Classifications > Imaging & Optics > Sensors and Detection > Remote Sensing, Technology Classifications > Imaging & Optics > Lasers & Other Sources
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Photo Multiplier System using High Power, Pure Sinusoidal LED Driver with Temperature Stabilization Feedback
This patented technology uses a light emitting diode (LED) to achieve the same imaging results as a laser source, without damaging the tissues.
Background:
Laser sources are the current standard in fluorescent imaging techniques, but lasers can damage tissue samples over time. This technology is based on a technique used in high energy physics for...
Published: 8/1/2024
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Inventor(s): Linda Powers, Jerrie Fairbanks, Janet Roveda
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Devices & Instrumentation, Technology Classifications > Imaging & Optics > Medical Imaging
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Energy and Memory Efficient Analog to Digital Image Processing Method for use in Data Intensive Systems
This invention starts from the mixed signal data collection and integrates the sampling scheme with memory and digitization. This integrated interface model will reduce the data amount at the very beginning of data acquisition. Thus, data received at the CPU, as well as power consumption in the CPU, will be greatly reduced. In this implementation, there...
Published: 8/1/2024
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Inventor(s): Janet Roveda, Linda Powers
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences, Technology Classifications > Software & Information Technology, Technology Classifications > Engineering & Physical Sciences > Electronics, Technology Classifications > Engineering & Physical Sciences > Electronics > Mixed Signal Processing, Technology Classifications > Engineering & Physical Sciences > Electronics > Data Storage, Technology Classifications > Software & Information Technology > Signal Processing
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Distributed Feedback Fiber Laser Pumped by Multimode Diode Lasers
Researchers at the University of Arizona College of Optical Sciences and Canada's Carleton University recently succeeded in fabricating high reflectivity (>99%) Fiber Bragg Gratings (FBGs) into phosphate glass fibers using UV light and a phase mask technique. With this new manufacturing technique, fiber lasers can be created as single monolithic...
Published: 4/3/2023
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Inventor(s): Nasser Peyghambarian, Axel Schülzgen, Li Li, Jacques Albert
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Lasers & Other Sources
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All-Fiber Multicore Fiber Laser Devices
Researchers at the University of Arizona have developed a compact, power-scalable, alignment-free fiber laser that takes a new approach to stabilizing phase-locked operation of multi-core fiber lasers by completely removing all free space optical components. This high-brightness, all-fiber laser package uses passive optical fiber spliced at both ends...
Published: 4/3/2023
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Inventor(s): Nasser Peyghambarian, Axel Schülzgen, Li Li
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Fiber Optics, Technology Classifications > Imaging & Optics > Lasers & Other Sources
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