Divider Line for Display
Original Publication Date: 1987-Sep-01
Included in the Prior Art Database: 2005-Feb-01
This article describes a circuit for displaying one or more horizontal divider lines to divide a display screen into multiple areas. The circuitry shown in Fig. 1 is operable to define a special row consisting of three scan lines, wherein the middle scan line is brightened as the divider line. For example, row N is defined as the special row, while rows N-1 and N+1 are normal lines, as shown in Fig. 2. In Fig. 1, a line attribute register is loadable with a line attribute for each row. The line attribute for the row to show the divider line includes a particular bit to enable a line decoder. The enabled line decoder operates to decode a line count output form a line counter which is incremented in synchronism with the scan lines.