Patent ID: 9443201
Filing Date: 2016-09-13
CPC Classification: G06K,G06N

Claim Text:
1. A method to determine a status of an apparatus, the method comprising: capturing by one or more sensors a first signal generated by the apparatus to be processed by a processor in a learning mode; the processor automatically defining a feature by using the first signal, wherein the feature includes a representation of a characteristic of the first signal in a transform domain; the processor learning a reference model in a learning mode that defines a normal operational mode of the apparatus in a first feature space; capturing a second signal generated by the apparatus by the one or more sensors in an operational mode to extract an operational feature; and comparing the operational feature to the reference model to determine whether the apparatus is operating in the normal operational mode and when a decision criteria is met, then analyzing the captured second signal in a second feature space that is different from the first feature space to determine whether there are additional features that define the normal operational mode.