G - Physics – 06 – F
Patent
G - Physics
06
F
354/229
G06F 3/02 (2006.01) G06F 3/14 (2006.01) G06F 17/21 (2006.01) G06F 17/24 (2006.01)
Patent
CA 1173968
UK9-80-014 TEXT PROCESSING APPARATUS WITH TWO-STAGE FORMATTING OF TEXT ABSTRACT Text editing and subsequent reformatting of a document is performed in two separate stages run as two parallel processes with different priorities. The editing of text is performed as a high priority process directly on a selected portion of the document previously copied under control of edit/format control logic 7 from a document store 5 into a refresh buffer 3. The editing process takes each keystroke as it is received by control logic 7 from keyboard 8 and enters it into buffer 3. The contents of the buffer 3 are directly mapped onto a display screen 2 so that the updated portion of the document is immediately seen by the operator. Should insufficient space be available in buffer 3 to accommodate an edited line of text, space is made available by con- trolled wordspill of text from the line into auxiliary storage prior to execution of the editing operation. Reformatting of the edited text is conducted as a low priority process taking one line of the document at a time and any words in auxiliary store for inclusion in that line. Refor- matting is interrupted by the occurrence of keystroke signals requiring further editing of the text.
398618
International Business Machines Corporation
Kerr Alexander
LandOfFree
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