Audio detection of medium jam
AssigneeKodak Alaris Inc.
InventorBruce Link
Life of this patent
Estimating the term…
Abstract
A method of indicating a medium jam along a medium transport path; a plurality of microphones for detecting the sound of the medium being transported as it enters medium transport path and producing a signal representing the sound; a plurality of microphones for detecting the sound of the medium being transported in the medium transport path and producing a signal representing the sound in the medium transport; a plurality of microphones for detecting the sound of the medium being existing the medium transport path and producing a signal representing the sound of the medium existing the medium transport; a processor for producing sound values from the signal and computing the maximum sound responsive to the sound values per each microphone, and indicating the medium jam responsive to the sound values.
Claims28
A system for checking for medium jams along a medium transport path comprising:
- one or more rollers for use in conveying the medium along the medium transport path;
- at least one microphone for detecting the sound of the medium being transported and producing a signal representing the sound;
- a processor configured to produce sound values from the signal and further configured to:
- compute pre-transport path maximum values responsive to the sound values from the at least one microphone from a region before the medium transport path, including ignoring or weighting at least one of the sound values;
- compute transport path maximum values responsive to the sound values from the at least one microphone from a region within the medium transport path, including ignoring or weighting at least one of the sound values;
- compute post transport path maximum values responsive to the sound values from the at least one microphone from a region within the post transport path, including ignoring or weighting at least one of the sound values;
- compare the pre-transport path maximum values, transport path maximum values, and post-transport path maximum values to at least one threshold;
- and
- indicate the presence of a medium jam when at least one of the pre-transport path maximum values, transport path maximum values, or post-transport path maximum values is greater than the at least one threshold.
A method for indicating a medium jam along a medium transport path comprising:
- (a) conveying the medium along the medium transport path with one or more rollers;
- (b) detecting, with at least one microphone, the sound of the medium being transported and producing a signal representing the sound;
- (c) producing, with a processor, sound values from the signal and:
- computing pre-transport path maximum values responsive to the sound values from the at least one microphone from a region before the medium transport path, including ignoring or weighting at least one of the sound values;
- computing transport path maximum values responsive to the sound values from the at least one microphone from a region within the medium transport path, including ignoring or weighting at least one of the sound values;
- computing post transport path maximum values responsive to the sound values from the at least one microphone from a region within the post transport path, including ignoring or weighting at least one of the sound values;
- and
- indicating the presence of a medium jam when at least one of the re-transport path maximum values transport path maximum values or post-transport path maximum values is greater than the at least one threshold.
Dependencies are inferred from the claim text.