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.
Patent No.:
Date of Patent:
Sep. 30, 2014
Filed:
Jul. 19, 2012
Applicants:
Jagannathan Venkataraman, Bangalore, IN;
Sandeep Kesrimai Oswal, Bangalore, IN;
Vinod Srinivasan Paliakara, Bangalore, IN;
Inventors:
Jagannathan Venkataraman, Bangalore, IN;
Sandeep Kesrimai Oswal, Bangalore, IN;
Vinod Srinivasan Paliakara, Bangalore, IN;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 1/30 (2006.01); H03M 3/00 (2006.01); H03M 1/12 (2006.01); G01R 19/25 (2006.01);
U.S. Cl.
CPC ...
H03M 1/1295 (2013.01); H03M 3/494 (2013.01); G01R 19/2506 (2013.01);
Abstract
Embodiments of the invention provide a pulseoximetry system with ambient offset cancellation that subtracts an estimated ambient offset to thereby allow a large front end gain while operating the front end on a low supply voltage. This large gain reduces input referred noise of an analog to digital converter in the front end while providing high dynamic range for signals with a large ambient offset.