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Interleaved Character Generator for Raster Display

IP.com Disclosure Number: IPCOM000051235D
Original Publication Date: 1982-Aug-01
Included in the Prior Art Database: 2005-Feb-10

Publishing Venue

IBM

Related People

Authors:
Smith, RC [+details]

Abstract

Scanning in the fast axis of a raster cathode ray tube (CRT) display is skewed so that the electron beam traverses a different pel (picture element) column (for vertical scanning) or pel row (for horizontal scanning) of each successive character. This allows memory interleaving of the character generator read-only memories (ROMs) to increase the bandwidth of the character generator without decreasing the cycle time or increasing the number of memory cells.