Browse Prior Art Database

Raster Scan TV Interface

IP.com Disclosure Number: IPCOM000054823D
Original Publication Date: 1980-Apr-01
Included in the Prior Art Database: 2005-Feb-13

Publishing Venue

IBM

Related People

Authors:
Destombes, F Reine, H [+details]

Abstract

This article describes a raster scan video interface for displaying a dot matrix corresponding to a bit matrix. In the proposed interface, the bit matrix is simply an area in the main memory of a microprocessor or any memory directly addressable by the microprocessor and is accessed by instructions exactly in the same way as any data area. The interface continuously displays the contents of the bit matrix to regenerate the screen. For a commercially available TV screen, this would normally be done 50 or 60 times per second. Therefore, any modification to the bit matrix is immediately visible in the image displayed.