Efficient Storage for CRT Display having Alternate Display Modes
Original Publication Date: 1981-Jan-01
Included in the Prior Art Database: 2005-Feb-10
This article describes a matrix pattern random-access storage interface between a CRT display and a driving system controlling the display of characters in a first mode of operation and dots and dashes representative of characters and words in a second mode of operation. Character font information is stored in a 5 by 7 array and double dotted to form a 10 by 14 display matrix. When operating in the second mode of operation, double dotting is effected horizontally only utilizing common circuitry.