Auto-realigned print correction

Typewriting machines – Including control of format and selection of type-face by... – Including editing or revision system

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Details

364900, 364943, 3649431, G06F 1100, G06K 300, G06K 700, B41J 530

Patent

active

049079000

ABSTRACT:
A word-processing system or memory typewriter has the usual keyboard, input display and printer, including a correction ribbon for removing erroneous characters from a document held in the printer; together with a spelling dictionary stored within the memory, an error indicator activated upon entry of an incorrect word, and correction information and controls also stored in memory for amending the incorrect word into a trial word which matches one stored in the above-mentioned dictionary. For greater efficiency and ease of use by the operator, if the trial word is satisfactory when displayed, pressing the usual return key on the keyboard signals the system to print that trial word in place of the incorrect word on a printed document, only the erroneous characters being replaced so as to minimize use of the correction ribbon and the print ribbon in unnecessary removal and replacement of valid characters in the incorrect word. If the trial word is longer than the incorrect word, printed text between the incorrect word and the end of the line of text may need removal and replacement. In that case, the above-mentioned pressing of the return key causes an entirely automatic sequence which first removes that printed text, but saves it in storage, then performs correction of just the erroneous characters of the undesired word, followed by printing of the additional characters of the trial word, and finally recalls the saved text and reprints it in proper alignment with the previous automatic entries.

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