The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 20, 2026

Filed:

Sep. 05, 2023
Applicant:

Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);

Inventors:

Tim Marks, Newton, MA (US);

Vineet Shenoy, Princeton, NJ (US);

Hassan Mansour, Newton, MA (US);

Suhas Lohit, Somerville, MA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 5/024 (2006.01); A61B 5/00 (2006.01);
U.S. Cl.
CPC ...
A61B 5/02427 (2013.01); A61B 5/02405 (2013.01); A61B 5/7203 (2013.01); A61B 5/7257 (2013.01); A61B 5/7267 (2013.01); A61B 5/7475 (2013.01); A61B 2503/22 (2013.01);
Abstract

A computer-implemented method for estimating a vital sign of a subject comprises receiving a sequence of imaging photoplethysmography (iPPG) signals measured from different regions of a skin of the subject and executing a cross-domain unrolling optimization iteratively minimizing a difference between the received iPPG signals and reconstructed iPPG signals followed by processing the reconstructed iPPG signals with an iPPG neural network trained in the frequency domain with machine learning to enforce a learned structure on the frequency coefficients of the reconstructed iPPG signals. The method further comprises determining the vital sign signal of the subject from the frequency coefficients of the reconstructed iPPG signals upon reaching a termination condition of the cross-domain unrolling optimization and outputting the vital sign signal corresponding to the reconstructed iPPG signals.


Find Patent Forward Citations

Marks, Tim. (2026). Cross-domain unrolling-based imaging photoplethysmography systems and methods for estimating vital signs (U.S. Patent No. 12765791). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12765791

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