SCANNING IMPROVEMENTS FOR SATURATED SIGNALS USING AUTOMATIC AND FIXED GAIN CONTROL METHODS

摘要

A method controls the exposure of an image containing a barcode for a barcode reading device. The method obtains a line of scan data from the image and identifies areas of saturation within the scan data. If there are saturated areas within the scan data, the method switches from an automatic gain control to a predetermined gain control. The method then resumes automatic gain control after a predetermined time.

主权项

1. A method of controlling the exposure of an image containing a barcode for a barcode reading device, the method comprising:
obtaining a line of scan data from the image; identifying areas of saturation within the scan data; switching from an automatic gain control to a predetermined gain control if the identified areas of saturation within the scan data are substantially saturated; and resuming automatic gain control after a predetermined time.