Multi-directional cursor motion

Details Multi-directional cursor motion Multi-directional cursor motion

G - Physics

06

F

354/236.5

G06F 3/153 (2006.01) G06F 3/023 (2006.01) G06F 3/03 (2006.01) G06F 17/21 (2006.01) G09G 5/08 (2006.01)

Patent

CA 1169578

MULTI-DIRECTIONAL CURSOR MOTION ABSTRACT OF THE INVENTION Operator keystrokes are processed in a text processor system to move a cursor on a display screen in either a vertical or horizontal direction or both without limitation as to the location of text. keystroke data is processed under the control of programs stored in a random access memory. For a cursor motion, the random access memory of the system is structured to include a text storage buffer and a display control block both interconnected to an applications program and a display access method program. Data is stored in the text storage buffer in an unformatted configuration and the programs equate a contextual cursor address with a spatial cursor position. After running the display access method program in accordance with application program commands, a refresh buffer provides display signals to visually present by means of the display screen a cursor at an identified position in text. AT9-80-033

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