Scanning improvements for saturated signals using automatic and fixed gain control methods

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 c...

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Bibliographische Detailangaben
Hauptverfasser: Xian Tao, Hejl Benjamin, Wilz, Sr. David
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung: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.