CIRCUIT ARRANGEMENT OF A AN OPERATION WORKPLACE FOR SELECTIVE CONTROL OF WINDOWS DURING OVERLAPPING AND UNDERLAYING THEREOF

A video display system selectively controls by window the number of overlay planes, the number of overlay palettes, and the overlay/underlay plane masks in a graphics display. A logic/multiplex control 13, 11 translates overlay and underlay data patterns from a multiple plane VRAM 12, referenced to...

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Hauptverfasser: DESAI NARENDRA M, VANOVER MICHAEL TERRELL, BEATTIE IRENE, VOLTIN JOHN ALVIN
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creator DESAI NARENDRA M
VANOVER MICHAEL TERRELL
BEATTIE IRENE
VOLTIN JOHN ALVIN
description A video display system selectively controls by window the number of overlay planes, the number of overlay palettes, and the overlay/underlay plane masks in a graphics display. A logic/multiplex control 13, 11 translates overlay and underlay data patterns from a multiple plane VRAM 12, referenced to the graphics system frame buffer 9, into window specific patterns. The window related translation is conveyed to conventional RAMDACs 11 for raster scan synchronized digital-to-analog conversion. The translation as provided by the controller is responsive to data selectively and dynamicaliy written into a random access memory 14, thus providing translation of overlay/underlay data into window distinct and selective overlay/underlay palette functions.
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subjects ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CALCULATING
COMPUTING
COUNTING
CRYPTOGRAPHY
DISPLAY
EDUCATION
ELECTRIC DIGITAL DATA PROCESSING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
SEALS
title CIRCUIT ARRANGEMENT OF A AN OPERATION WORKPLACE FOR SELECTIVE CONTROL OF WINDOWS DURING OVERLAPPING AND UNDERLAYING THEREOF
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