Filter RAMDAC with hardware 1+E,fra 1/2+EE -D zoom function

Filter RAMDAC with hardware 1+E,fra 1/2+EE -D zoom function

In a pixel based display system, zoom logic is added to the data stream of a RAMDAC. In the zoom logic, horizontal lines of image data are stored in locations spaced apart in an intermediate frame buffer. The horizontal scan lines are read into a single line buffer and then the data is read from the...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: EDELSON, STEVEN D
Format: Patent
Sprache:eng
Schlagworte:
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CALCULATING
COMPUTING
COUNTING
CRYPTOGRAPHY
DISPLAY
EDUCATION
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
SEALS
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Beschreibung
Zusammenfassung:In a pixel based display system, zoom logic is added to the data stream of a RAMDAC. In the zoom logic, horizontal lines of image data are stored in locations spaced apart in an intermediate frame buffer. The horizontal scan lines are read into a single line buffer and then the data is read from the single line buffer to generate an enlarged display image. Digital filtering may be employed to generate interpolated values for pixels between the original values in the zoomed image.