Track sensor controller

申请公布号：

US4352013(A)

申请号：

US19800155053

申请日期：

1980.06.02

申请公布日期：

1982.09.28

申请人：

BURROUGHS CORPORATION

发明人：

FASIG, HAROLD A.;PAANANEN, EUGENE E.

分类号：

G06K13/067;(IPC1-7):G01V9/04

主分类号：

G06K13/067

摘要：

An integrated circuit is shown for use as a controller for a track sensor used with document processors. The track sensor includes a light source and a light detector. The circuit monitors the signal from the light sensing portion of the sensor, comparing the signal with a standard value and providing a feedback signal to the light source to adjust the intensity of the light to compensate for the effects of aging, holes in a document, the accumulation of dirt on sensor lenses and the like. The circuit determines when the leading edge of a document arrives and when the trailing edges pass by. It includes elements which prevent false indications that the trailing edge has passed when holes go by the sensor.