University of Washington

Visualant, Inc.

Other

Visulant, Inc.

Thomas Adrian Furness, Iii

Brian T Schowengerdt

Nicholas E Walker

Joel Steven Kollin

Ross D Melville

Eric J Seibel

Bradley E Sparks

Charles David Melville

Michael R Tidwell

Michael Denton

Allan David Beach

Richard Ian Mander

Alan Tompkins

Winyu Chinthammit

Richard Stephen Johnston

Quinn Y J Smithwick

Brian L Pal

Robert F Doane

Donald E Parker

Jerrold D Prothero

Been-Lirn Henry Duh

Konrad E Schroder

Robert A Burstein

A front-end system collects diagnostically relevant information or data, including pulse waveform information, and optionally timing information, symptom information, and/or diagnostic information. One or more sensors or transducers detect pulse waveforms in a consistent manner, across various subjects and practitioners. A back-end system stores diagnostically relevant information and diagnostic information, typically for a large population of subjects and practitioners. The back-end system generates system generated diagnoses and/or suggested remedial actions based on submitted inquiries or requests. The back-end system can advantageously employ machine learning techniques to identify correlations between defining characteristics or features of pulse waveforms and diagnoses, over a large number of samples submitted by a substantial number of practitioners, for instance of traditional Chinese medicine. The back-end system can also employ primary and/or secondary symptoms in identifying correlations.

Automated diagnosis based at least in part on pulse waveforms

A portable, tabletop fluid sampling device simplifies spectral analysis to produce an accurate but inexpensive chromatic fingerprint for fluid samples. In one embodiment, the sampling device uses an array of variable wavelength LED emitters and photodiode detectors to measure Rayleigh scattering of electromagnetic energy from the fluid sample contained in a cuvette. Either the fluid itself, or particles suspended in the fluid can then be identified by performing spectral pattern matching to compare results of a spectral scan against a library of known spectra. A wide range of applications include substance identification, security screening, authentication, quality control, and medical diagnostics.

Device for evaluation of fluids using electromagnetic energy

Systems for analyzing fluids (e.g., gases) include a chamber structure with a reflective inner surface, emitters, a primary detector positioned to principally detect electromagnetic energy reflected numerous times through the gas(es) and a calibration detector positioned to detect electromagnetic energy not reflected numerous times through the gas(es). Calibration may be automatically performed. The primary detector relies principally on Raleigh scattering. An optional primary detector may be positioned to principally detect Raman scattered electromagnetic energy.

Systems for fluid analysis using electromagnetic energy that is reflected a number of times through a fluid contained within a reflective chamber

Spectral information may be employed in process control and/or quality control of goods and articles. Spectral information may be employed in process control and/or quality control of media, for example financial instruments, identity documents, legal documents, medical documents, financial transaction cards, and/or other media, fluids for example lubricants, fuels, coolants, or other materials that flow, and in machinery, for example vehicles, motors, generators, compressors, presses, drills and/or supply systems. Spectral information may be employed in identifying biological tissue and/or facilitating diagnosis based on biological tissue.

Method, apparatus, and article to facilitate evaluation of objects using electromagnetic energy

Sampling device geometry reduces specular reflectance, using lenses to focus electromagnetic energy to predominately return scattered rather than reflected electromagnetic energy to detector(s), reducing effect of non-matte surfaces and/or window. Sampling device includes inherent automatic optical calibration, and optionally thermal calibration. Calibration detectors are optically isolated with respective emitters.

Method, apparatus, and article to facilitate evaluation of substances using electromagnetic energy

A system employs combinations of marking media, each with respective distinguishing spectral characteristics to encode human comprehensible information in, and read human comprehensible information from, machine-readable indicia or symbols. Machine-readable indicia may be a single dot encoding information only in the combinations. Machine-readable symbols may be linear or two dimensional, spatially encoding information in the combinations, as well as spatially. A symbology may map at least the combinations to human-readable symbols or characters. A printer may form indicia or symbols with combinations of marking media. A reader may read indicia or symbols and decode information from at least the combinations of marking media. Different combinations may be visually homogenous, for example gray.

Systems, methods and articles related to machine-readable indicia and symbols

Objects such as manufactured goods or articles, works of art, media such as identity documents, legal documents, financial instruments, transaction cards, other documents, and/or biological tissue are sampled via sequential illumination in various bands of the electromagnetic spectrum, a test response to the illumination is analyzed with respect to reference responses of reference objects. The sequence may be varied. The sequence may define an activation order, a drive level and/or temperature for operating one or more sources. Illumination may be in visible, infrared, ultraviolet, or other portions of the electromagnetic spectrum. Elements of the evaluation system may be remote from one another, for example coupled by a network.

Method, apparatus, and article to facilitate distributed evaluation of objects using electromagnetic energy

A system for evaluating subject objects includes at least one physical source operable to emit electromagnetic energy and driver electronics drivingly coupled to at least one physical source. The driver electronics is configured to drive at least one physical source as a number of logical sources, using an electromagnetic forcing function. The number of logical sources is greater than the number of physical sources. In addition, the system includes a sensor configured to receive an electromagnetic response from at least a portion of an evaluation object illuminated by one or more physical sources operated as logical sources, and convert the electromagnetic response to a test response signal indicative of the electromagnetic response of the evaluation object.

System and method of evaluating an object using electromagnetic energy

A virtual image is registered among a perceived real world background. Tracking light is scanned into the real world environment, which includes at least one detector pair. A first time and a second time at which the tracking light impinges on the first detector is detected, in which the first time and second time occurs within adjacent scan lines. A time at which a horizontal scan line edge (e.g., beginning of scan line or end of scan line) is encountered is derived as occurring one half way between the first time and the second time. The horizontal location of the first detector then is determined within a specific scan line inferring the scan line edge time. The vertical location of the detector is determined within a scan frame by measuring time duration using the beginning of the frame. By determining a location independently from the temporal resolution of the augmented imaging system, the temporal location of the detector is identified to a sub-pixel/sub-line precision. The augmented image is registered either to a 3D real world spatial coordinate system or to a time domain coordinate system based upon tracked position and orientation of the user.

Virtual image registration in augmented display field

A scanning display produces an image having a plurality of image sectors for viewing by an eye. A first beam set is directed along a first beam path and modulated according to a first of the image sectors. A second beam set is directed along a second beam path and modulated according to a second of the image sectors. A biaxial scanning device receives the first beam set and the second beam set, and scans light from the first beam set along two axes toward a first region of a display field to produce the first image sector, and concurrently scans light from the second beam set along two axes toward a second region of the display field to produce the second image sector. The first region and second region are adjacent, substantially non-overlapping regions of the display field. The image is scanned within the display field.

Growing community of inventors

Seattle, WA, United States of America

Thomas Adrian Furness, Iii