CHARACTER DETECTION SYSTEM

An optical character detection system in which a plurality of digital signals are adaptively produced based upon actual characteristics of a character and its background being viewed and reliably representing the presence or absence of a scanned character. An elongated array of photosensors is dispo...

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Bibliographische Detailangaben
Hauptverfasser:	FOUGERE G,US, LORAH L,US, BRISK R,US, PASTAN H,US
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	An optical character detection system in which a plurality of digital signals are adaptively produced based upon actual characteristics of a character and its background being viewed and reliably representing the presence or absence of a scanned character. An elongated array of photosensors is disposed along a linear axis orthogonal to the path of character travel and arranged for relative motion with characters to be read. The array includes sensors which view the document background above and below the character field to provide a reference signal for comparison with the signals of the character sensors to produce the digital signals representing a character.