Koninklijke Philips Corporation N.v.

Emile Josephus Carlos Kelkboom

Dirk Jeroen Breebaart

Alphons Antonius Maria Lambertus Bruekers

Antonius Hermanus Maria Akkermans

Thomas Andreas Maria Kevenaar

Aweke Negash Lemma

Gerhard Spekowius

Koen Theo Johan De Groot

Tine Smits

Joseph Ernest Rock

Jennifer Caffarel

Jarno Mikael Riistama

Sabri Boughorbel

Silviu Dovancescu

Berk Gokberk

There is provided a method for use in monitoring a physiological characteristic of a subject, the method comprising receiving a value of the physiological characteristic of the subject; determining whether the received physiological characteristic value is normal using a range of normal variability of the physiological characteristic for the subject calculated using a set of previous values of the physiological characteristic for the subject; and in the event that the received physiological characteristic value is determined to be normal, updating the range of normal variability using the received physiological characteristic value.

Method and apparatus for use in monitoring and identifying abnormal values of a physiological characteristic of a subject

There is provided a method and apparatus for adjusting a monitoring system which is arranged to receive measured values of a physiological characteristic of a subject and to generate an alarm when the received measured values meet at least one predefined alarm generation criterion. The method comprises obtaining data relating to a hospitalization of the subject, the data comprising a time of the hospitalization; obtaining a plurality of measured values of the physiological characteristic measured during a measurement period preceding the time of the hospitalization or a measurement period preceding and including the time of the hospitalization; defining a detection window as a time period ending with the time of the hospitalization and having a predetermined duration; determining whether the monitoring system would generate an alarm during the detection window based on applying the at least one predefined alarm generation criterion to the obtained plurality of measured values; and if the monitoring system would not generate an alarm during the detection window, altering the at least one predefined alarm generation criterion such that the time at which the monitoring system would generate an alarm based on applying the altered predefined alarm generation criterion to the obtained plurality of measured values is within the detection window.

Method and apparatus for adjusting a monitoring system

A basic idea of the present invention is to selectively employ one of at least two different feature extraction processes when generating a biometric template of an individual. An individual offers a physiological property, such as a fingerprint, an iris, an ear, a face, etc., from which biometric data can be derived, to a sensor of an enrollment authority. In the following, the property to be discussed will be fingerprints, even though any suitable biometric property may be used. From the fingerprint, a positional reference point of the biometric data is derived. The derivation of the positional reference point may be accomplished using any appropriate method out of a number of known methods. Such a reference point could be the location of a core, a delta, a weighted average of minutiae coordinates, or alike. Typically, the reference point includes a core of a fingerprint expressed as a three-dimensional coordinate denoted by means of x, y, and angle &#x3b1;. A contribution indicator is calculated for the derived positional reference point, and it is determined whether the derived positional reference point can be considered reliable. Depending on the reliability of the derived reference point, one of the two different feature extraction processes is selected; either the first feature set is extracted using a method which is invariant of the derived reference point, or a method is used taking into account the derived reference point. The better the estimation of the reference point is, the more reliable the reference point-dependent extraction method is. Finally, the biometric template is generated using the extracted first feature set.

Robust biometric feature extraction with and without reference point

Growing community of inventors

Eindhoven, Netherlands

Emile Josephus Carlos Kelkboom