Method and apparatus for determining a smoothed data point within a stream of data points

US11657120B2 · kind B2 · utility

Assignee

• EYESENSE GMBH · CH

Inventors

• Frank Kuster · Breitscheid, DE
• Roland Krivànek · Aschaffenburg, DE
• Achim Müller · Aschaffenburg, DE

Key dates

• Filing date: Oct 25, 2019
• Grant date: May 23, 2023
• Expiry date: Dec 3, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/318
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method and an apparatus for determining at least one smoothed data point (tk, sk) within a stream of data points {ti, si} with 1≤i≤z, k<z is disclosed. Herein, the stream of data points {ti, si} is consecutively acquired in a manner that a data point (ti, si) is acquired after an acquisition of a preceding data point (ti−1, si−1), wherein each data point (ti, si) comprises a valid value or an invalid value or a missing value for the signal si at a time ti. Herein, the signal si at the time ti comprises physical, chemical, biological, environmental, and/or technical data acquired by means of a technical set-up. According to the method, a set of data points is provided, wherein for each smoothed data point (tk, sk) a smoothing set is created. For each smoothed data point (tk, sk), trailing data resulting from large gaps are removed until it is verified whether the smoothing set comprises a minimal number of data points. Thereafter, for each smoothed data point (tk, sk) an initial slope set is calculated, on which at least one exponential smoothing is applied, in which cause an at least once modified slope set is determined. By integrating the at least once modified slope set, a val…