Patent ID: 9480434
Filing Date: 2016-11-01
CPC Classification: A61B,G06K,G06T

Claim Text:
1. Device for extracting information from detected characteristic signals, comprising: an interface for receiving a data stream derivable from electromagnetic radiation reflected by an object, wherein the data stream comprises a characteristic signal including (i) physiological information and (ii) a disturbing signal portion, the physiological information being representative of at least one at least partially periodic vital signal, the disturbing signal portion being representative of at least one selected from the group consisting of an object motion portion and a non-indicative reflection portion, wherein the characteristic signal is associated with an additive signal space, wherein the signal space comprises additive channels for representing the characteristic signal; a converter means for transferring the characteristic signal into a transferred signal by converting (i) at least three absolute components of the characteristic signal related to respective additive channels to (ii) at least two difference components of the characteristic signal, wherein each of the at least two difference components is derived through a respective arithmetic transformation that comprises an at least partial subtraction of at least one of the at least three absolute components from the remaining absolute components, wherein the arithmetic transformation for each of the at least two difference components further comprises coefficients that at least substantially sum to zero, and further wherein the at least two difference components enable the disturbing signal portion to be at least partially suppressed in the transferred signal; and an extractor means for extracting the at least partially periodic vital signal from the at least two difference components in the transferred signal.