Print enhancement system for enhancing dot printer images

A method and apparatus for enhancing the quality of images printed by dot printers or dot displays are disclosed. Image irregularities caused by quantization are smoothed by using a set of rules to transform an initial pattern into an enhanced pattern for printing. The initial pattern may consist of...

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Bibliographische Detailangaben
Hauptverfasser:	BLUME, J. ERIK, SCANDALIS, ANEESA R, MCDONOUGH, TIMOTHY M
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CALCULATING COMPUTING CORRECTION OF TYPOGRAPHICAL ERRORS COUNTING CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY HANDLING RECORD CARRIERS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME IMAGE DATA PROCESSING OR GENERATION, IN GENERAL LINING MACHINES PERFORMING OPERATIONS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRESENTATION OF DATA PRINTING RECOGNITION OF DATA RECORD CARRIERS SEALS SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	A method and apparatus for enhancing the quality of images printed by dot printers or dot displays are disclosed. Image irregularities caused by quantization are smoothed by using a set of rules to transform an initial pattern into an enhanced pattern for printing. The initial pattern may consist of a matrix of bits representing an image having X dots per inch along an intended direction of printing. An intermediate pattern is formed by replicating columns of bits from the initial pattern. Image enhancement rules are applied to the intermediate pattern to invert one or more bits in the intermediate pattern to create an enhanced pattern. The enhanced pattern is printed at n*X dots per inch along the direction of printing where n>/=1.