Detector
AssigneeNCR Corporation
InventorBarrie Clark
Life of this patent
Estimating the term…
Abstract
A detector (10) for detecting an object (42) in a media item (40), such as a check or banknote is described. The detector (10) comprises first electrically conducting means (14), such as a roller, disposed on one side of a media path (32); second electrically conducting means (16), such as another roller, disposed on an opposing side of the media path (32); insulating means (30a,b) for electrically insulating the first and second conducting means (14,16); and impedance measuring means (38) for measuring the impedance between the first and second electrically conducting means (14,16). By measuring the impedance between the conducting means (14,16) it is possible to determine if an electrically conducting object (42) is being carried by a media item (40).
Claims12
A detector for detecting an object in a media item, the detector comprising:
- a first electrical conducting member disposed on one side of a media path;
- a second electrical conducting member disposed on an opposite side of the media path;
- a first insulating member which is other than a media item and which is disposed on one end portion of the first electrical conducting member to electrically isolate the first and second electrical conducting members;
- a second insulating member which is other than a media item and which is disposed on an opposite end portion of the first electrical conducting member to electrically isolate the first and second electrical conducting members;
- and
- an impedance measuring circuit for measuring impedance at a location which is between the first and second electrical conducting members and between the first and second insulating members to determine if an object is present in the media item as the media item is transported along the media path.
A self-service terminal comprising:
- means for receiving a single sheet media item deposited by a self-service customer conducting a self-service transaction;
- means defining a media item path along which the deposited single sheet media item can be transported;
- a first electrical conductor disposed on one side of the media item path;
- a second electrical conductor disposed on an opposite side of the media item path;
- a pair of insulating discs mounted on one of the first and second electrical conductors and for electrically isolating the first and second electrical conductors;
- and
- impedance measuring means for measuring impedance between the first and second electrical conductors to determine if an object is present in the deposited single sheet media item being transported along the media item path.
Dependencies are inferred from the claim text.