Multidirectional cursor motion

Details Multidirectional cursor motion Multidirectional cursor motion

1980-11-20

1984-04-24

Springborn, Harvey E.

Boots, shoes, and leggings

340709, G06F 3153

Patent

active

044451946

ABSTRACT:
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.

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patent: 4057849 (1977-11-01), Ying et al.
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