发明名称 Method of multi-directionally positioning a cursor on a display of a text processing system.
摘要 <p>Method and arrangement in a text processing system to move a cursor on a display screen (26) in either a vertical or horizontal direction or both without limitation as to the location of text. Keystroke data from keyboard (16) is processed under the control of programs stored in a random access memory (18). For a cursor motion, the random access memory (18) of the system is structured to include a text storage buffer (64) and a display control block (66) both interconnected to an applications program (62) and a display access method program (68). Data is stored in the text storage buffer (64) in an unformatted configuration and the programs equate a contextual cursor address with a spatial cursor position. After running the display access method program (68) in accordance with application program commands, a refresh buffer (24) provides display signals to visually present by means of the display screen (26) a cursor at an identified position in text. </p>
申请公布号 EP0052723(A2) 申请公布日期 1982.06.02
申请号 EP19810107920 申请日期 1981.10.05
申请人 INTERNATIONAL BUSINESS MACHINES CORPORATION 发明人 CASON, WILLIAM, CHARLES;KUECKER, WARD, ARTHUR;LAPLANT, SUSAN DIANE
分类号 G06F3/02;G06F17/21;G09G5/08;(IPC1-7):06F15/20;09G1/02 主分类号 G06F3/02
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