AUDIO DETECTION OF MEDIUM JAM

摘要

A method of indicating a medium jam along a medium transport path comprising one or more rollers for use in conveying the medium along the medium transport path; a microphone for detecting the sound of the medium being conveyed and producing a signal representing the sound; a processor for producing sound values from the signal and computing a moving window sum responsive to the sound values; computing a high amplitude count responsive to the sound values; and computing a post roller sum responsive to the sound values; and indicating the medium jam responsive to the moving window sum, high amplitude count, or post roller sum.

主权项

1. A method of indicating a medium jam along a medium transport path comprising:
(a) one or more rollers for use in conveying the medium along the medium transport path; (b) a microphone for detecting the sound of the medium being conveyed and producing a signal representing the sound; (c) a processor for producing sound values from the signal and:
(i) computing a moving window sum responsive to the sound values;(ii) computing a high amplitude count responsive to the sound values; and(iii) computing a post roller sum responsive to the sound values; and (d) indicating the medium jam responsive to the moving window sum, high amplitude count, or post roller sum.