Browse Prior Art Database

Display Test Pattern

IP.com Disclosure Number: IPCOM000046758D
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07

Publishing Venue

IBM

Related People

Authors:
Hatcher, SC Le, T [+details]

Abstract

A plurality of display test patterns constructed of individual picture elements (pels) according to the patterns shown above are generated on the face of a cathode ray tube (CRT) display for use in assessing the performance quality of the CRT display system without the need for access to the internal circuits of the system. The circles in the above pattern should be accurately reproduced as brightened pels in each of the patterns on the CRT screen. Where spaces are shown between horizontal rows and vertical columns of circles in the above pattern, the spaces should also be present on the CRT screen. In the above pattern the sailboat 1 and snowflake 2 are useful in assessing delay with respect to video amplifier response.