Detector to determine the presence of an electrical signal in the presence of noise of predetermined characteristics
AssigneeLGZ Landis & Gyr Zug AG
InventorsJean-Gabriel Gander, Ralph Aubert
Life of this patent
Estimating the term…
Abstract
A detector for determining the presence of an electrical signal in the presence of noise, the electrical signal having at least two predetermined characteristics, includes a signal transforming device for obtaining a plurality of independent estimates of each characteristic, a classification device connected to the signal transforming device for sorting the plurality of independent estimates into at least two classes, and a counting device for signaling the presence of the electrical signal, when the number of the estimates within one class exceeds a predetermined number.
Claims16
A detector for determining the presence of an electrical signal in the form of a tone in the presence of noise, said electrical signal having at least two predetermined characteristics,
- comprising in combination:
- signal transforming means for obtaining a plurality of independent estimates of each of said characteristics,
- classification means connected to said signal transforming means for sorting said plurality of independent estimates into at least two classes, respectively, and
- counting means for signaling the presence of said electrical signal when the number of said estimates within one of said classes exceeds a predetermined number.
A detector for determining the presence of an electrical signal in the form of a tone in the presence of noise, said electrical signal having at least two predetermined characteristics,
- comprising in combination:
- signal transforming means for obtaining a plurality of independent estimates of each of said characteristics,
- classification means connected to said signal transforming means for sorting said plurality of independent estimates into at least two classes, respectively, and
- counting means for signaling the presence of said electrical signal when the number of said estimates within one of said classes exceeds a first predetermined number, and for signaling the absence of said electrical signal when the number of said estimates within the other of said classes exceeds a second predetermined number.
Dependencies are inferred from the claim text.