Heart rate detection utilizing autoregressive analysis
CA 1252893 A · Owner: American Telephone And Telegraph Company · Inventors: Zimmerman, Gustavus H. Iii; Prezas, Dimitrios P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A system for determining the heart rate in response to an electrocardiogram (EKG) signal that has been filtered by performing an autoregressive analysis low-pass filtered by performing a digital filtering function, and the rate determined by utilizing a digital peak detection technique. In a heart rate detection system, the EKG signal from an EKG instrument is first digitized and then the colored noise component is removed from the digitized EKG samples by performing a linear predictive coding filtering function on the EKG samples. After the colored noise has been filtered from the digitized EKG samples, a low pass filtering function is performed to remove …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 18, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.