Autocorrecting text typed into a word processing document

• US 5,761,689 A
• Filed: 09/01/1994
• Issued: 06/02/1998
• Est. Priority Date: 09/01/1994
• Status: Expired due to Term

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Rayson, Steven J., Hachamovitch, Dean J., Kwatinetz, Andrew L., Hirsch, Stephen M.
• Primary Examiner(s): Jankus, Almis R.
• Application Number:
  US08/299,497
• Time in Patent Office: 1,370 Days
• Field of Search: 364/419.1-419.17, 395/792-803, 707/530-540
• US Class Current: 715/210
• CPC Class Codes: G06F 40/232 Orthographic correction, e.g. spell checking or vowelisation

Abstract

A method and word processing system for automatically replacing one or more characters of text entered by a user in a word processing document with the corresponding plain text, formatted text, or other object. The user can select among a plurality of predefined autocorrect options in an Autocorrect dialog box that is displayed when the autocorrect function is selected from the menu or toolbar of the word processing system. These options include changing straight quotes to smart quotes, correcting words that begin with two initial upper case letters so that only the first letter is upper case, capitalizing the first letter of any sentence that is not capitalized, capitalizing the names of the days of the week if not already capitalized, and replacing text entered by the user with either plain text, formatted text, a graphic picture, or other type of object. Using the autocorrect function, the user can automatically correct commonly misspelled words, and automatically expand relatively short groups of characters to longer words, paragraphs, or graphic objects. Each character or string of characters that is to be replaced is associated with a "definition" entered as plain text, formatted text, or as an object. The entry is added to an autocorrect list displayed to the user in the Autocorrect dialog box. Any entry in the autocorrect list can also be deleted or changed by the user. A second embodiment makes an intelligent decision concerning autocorrection of text, based upon the time interval between keyboard events.

Claims

1. A method for automatically replacing an entry made by a user in a computer display with a replacement, said method comprising the steps of:

(a) enabling the user to indicate the entry that will be automatically replaced and storing said indication;

(b) enabling the user to identify the replacement that will automatically replace the entry and storing the identification of the replacement in relationship to said entry;

(c) scanning characters entered by the user to detect if;

(i) the user has entered characters comprising the entry; and

(ii) a delimiter character was entered after the characters comprising the entry; and

if so,

(d) automatically replacing said entry with the replacement.

2. The method of claim 1, wherein the replacement comprises a plurality of characters that are not limited to a single word.

3. The method of claim 1, wherein the replacement comprises a graphic representation.

4. The method of claim 1, further comprising the steps of storing a plurality of entries in a list, each entry in said list corresponding to a different replacement that automatically replaces said entry when said entry is detected in accordance with steps (c)(i) and (c)(ii).

5. The method of claim 1, wherein the entry comprises a first and a second character in any word that are both upper case and are followed by at least one lower case character, said replacement comprising corresponding first and second characters, with the second character being in lower case, for use in correcting typographical errors wherein any word is mistakenly entered by the user with two initial upper case characters.

6. The method of claim 1, further comprising the steps of determining a rate at which the user enters characters;

and as a function of said rate, determining whether to replace the entry with the replacement.

7. The method of claim 1, wherein the entry comprises a lower case character as an initial character of a first word in a sentence, said replacement comprising a corresponding upper case character for the initial character of the first word.

8. The method of claim 1, wherein the replacement is stored in a binary file format that supports a rich text format and includes any object, formatting and style data, which are applied to the replacement.

9. The method of claim 1, wherein the entry comprises a word, and wherein a case used for characters comprising said word at least in part determine the case of the characters comprising the replacement.

10. The method of claim 1, further comprising the step of disabling step (d) in a current instance to prevent said entry from again being replaced with the replacement if the user backspaces over the replacement and reenters the entry, thereby enabling the user to override the automatic replacement for said current instance.

11. A method for automatically replacing at least one specified character with at least one predefined replacement character in the text of a word processing document, comprising the steps of:

(a) locating an initial character in a current word in which a cursor is positioned and storing a character position for the initial character; and

(b) determining if the current word is followed by a delimiter character, and if so;

(i) comparing each character comprising the current word with said at least one predefined character to determine if a match exists; and

(ii) if said match exists, automatically replacing said at least one predefined character with said at least one predefined replacement character.

12. The method of claim 11, wherein said at least one predefined character is an initial lower case character of a day of a week, and wherein said at least one predefined replacement character comprises a corresponding initial upper case character for the day of the week.

13. The method of claim 11, wherein said at least one predefined character comprises a second character of any current word that is upper case, is preceded by an upper case letter, and is followed by any lower case characters that further comprise the current word, and wherein said at least one predefined replacement character comprises a corresponding second character of the current word that is lower case.

14. The method of claim 11, wherein said at least one predefined character comprises any initial lower case character of any current word beginning a sentence, and wherein said at least one replacement character comprises a corresponding initial upper case character of said current word.

15. The method of claim 11, further comprising the steps of storing a plurality of predefined character expressions, each of said predefined character expressions corresponding to a different predefined replacement expression;

and automatically replacing any of said predefined character expressions entered by a user with the corresponding predefined replacement expression.

16. The method of claim 11, wherein said at least one predefined replacement character includes formatting parameters that determine its form and style.

17. The method of claim 11, wherein said at least one predefined replacement character comprises a graphic figure.

18. The method of claim 11, wherein said at least one predefined replacement character includes formatting stored in a binary file format that supports a rich text format and includes any object, formatting and style data which are applied to the replacement character.

19. The method of claim 11, wherein a case associated with said at least one predefined character, a position of the current word in a sentence, and the case of at least one character of the current word determine the case of said at least one predefined replacement character in the document.

20. The method of claim 11, further comprising the steps of:

determining whether a user has entered a command to undo the replacement of said current word with said at least one predefined replacement character, and if so;

(a) replacing said at least one predefined replacement character with said current word; and

(b) positioning an entry point after the delimiter character, thereby enabling the user to override the replacement of the current word.

21. A method for automatically correcting an error in text entered in a word processing document in real time, as said document is being created, comprising the steps of:

determining if a word of the text just entered in the document includes a first and a second initial character that are upper case and have been entered at a rate that exceeds a predefined value, followed by at least a third character that is lower case; and

if so,

automatically replacing the second initial character of the word that is upper case with a corresponding lower case character as the word processing document is being created.

22. The method of claim 21, further comprising the step of providing a user with an option to disable the automatic replacement of the second initial character of any word with the corresponding lower case character.

23. A word processing system that selectively automatically replaces an entry made by a user in a word processing document with a replacement, comprising:

(a) a computer that includes;

(i) a central processing unit;

(ii) a memory in which program instructions are stored for controlling the central processing unit, causing the computer to function as a word processing system;

(iii) a display that is coupled to the central processing unit, for displaying text entered by the user into the word processing system;

(iv) a user interface that is coupled to the central processing unit to enable text and commands to be entered into the word processing system to create a document; and

(v) a non-volatile storage unit in which the document is stored; and

(b) said program instructions causing the computer to;

(i) enable the user to indicate the entry that will be automatically replaced and thereafter, storing said indication;

(ii) enable the user to identify the replacement that will automatically replace the entry and thereafter, storing the identification of the replacement in relationship to said entry; and

(iii) scan characters typed by the user to detect if;

(1) the user has typed the characters comprising the entry, and

(2) the user has typed a delimiter character after the entry; and

if so,

(iv) to automatically replace said entry with the replacement.

24. The word processing system of claim 23, wherein the replacement comprises a plurality of characters that are not limited to a single word.

25. The word processing system of claim 23, wherein the replacement comprises a graphic representation.

26. The word processing system of claim 23, wherein said program instructions cause the central processing unit to store a plurality of entries in a list, each entry in said list corresponding to a different replacement that automatically replaces the entry when the delimiter character is typed and the entry is detected in the characters typed by the user immediately before the delimiter character.

27. The word processing system of claim 23, wherein the entry comprises a first and a second character in any word that are both upper case and are followed by at least one lower case character, said replacement comprising a corresponding first and second character, with the second character being in lower case, for correcting a typographical error in which a word is mistakenly entered by the user with two initial upper case characters.

28. The word processing system of claim 23, wherein the entry comprises a lower case character as an initial character of a first word in a sentence, said replacement comprising a corresponding upper case character for the initial character of the first word.

29. The word processing system of claim 23, wherein the replacement is stored in a binary file format that supports a rich text format and includes any object, formatting, and style data, which are applied to the replacement.

30. The word processing system of claim 23, wherein the entry comprises a word, and wherein a case used for characters comprising said word at least in part determines the case of the characters comprising the replacement that are inserted into the document.

31. A method for automatically replacing an entry made by a user in a computer display with a replacement, said method comprising the steps of:

(a) determining a time interval between a plurality of predefined keyboard events as a user types on a computer keyboard; and

(b) automatically replacing at least one character of a current word with the replacement if said time interval between said predefined keyboard events occurring during typing of the current word is less than a predetermined value, said predetermined value having been selected as being indicative that the user has typed a typographical error, said replacement being entered to correct the typographical error.

32. The method of claim 31, wherein the current word typed by the user includes two adjacent upper case characters, and the replacement changes a second of the two upper case characters to be a corresponding lower case character.

33. The method of claim 32, wherein the keyboard events include, in order, a shift key depression, a first key depression, a second key depression, and a shift key release, said second upper case character being changed to the corresponding lower case character when the shift key release occurs less than a predetermined interval after the second key depression.

34. The method of claim 31, wherein the current word typed by the user includes two characters that are transposed, said replacement reversing a sequential order of the two characters that were transposed to provide a correct order of said characters.

35. The method of claim 34, further comprising the step of providing a lookup table in which a plurality of entries corresponding to typographical errors are stored, each entry being associated with a corresponding replacement in which transposed characters in the entry are corrected.

36. The method of claim 34, further comprising the step of determining a likelihood that the current word includes a transposition error, said likelihood being a function of a time between a first key depression and a second key depression.

37. The method of claim 36, wherein the likelihood of a transposition error having occurred in the current word is greater if the time between the first and the second key depressions is less than a predetermined value.

38. The method of claim of 37, further comprising the step of enabling the user to change the predetermined value.

39. The method of claim 37, further comprising the step of enabling the user to override the replacement, and to reenter the entry.