JP2004185373A - Character correction method and character input device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a character correction method and a character input device, capable of correcting erroneous input by depressing wrong keys at key input, and further correcting the erroneous input by the depressing wrong keys to a character string included in a separately prepared text in the device. <P>SOLUTION: This character input device has a plurality of keys respectively allotted with a plurality of characters, and decides an input character by the number of depressing times of the key. When correcting an erroneous input character of the character string inputted by the key, a character physically close to the key allotted with the erroneously inputted character, having the same number of the depressing times is selected as a candidate of a right input character. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
[0002]
The present invention relates to a character correction method and a character input device using the character correction method.
[Prior art]
[0003]
In a key input device of a small electronic device such as a portable information terminal or a mobile phone, many characters, numbers and symbols are assigned to one key in order to input characters with about ten keys. Different characters can be input and selected according to the number of times the key is pressed.
[0004]
Taking the method described in Japanese Patent Application Laid-Open No. 61-195047 as an example, a method of allocating characters such as Japanese syllabary to each key is disclosed. That is, "1", "2", "3",. . . , "8", "9", and "0" are assigned to "A line", "KA line", "SA line",. . . , "Ya line", "Ra line", and "Waon" are assigned, and when the "1" key is pressed once, "a" is inputted and selected, and when the "1" key is pressed once, """, That is, characters can be input and selected according to the number of times of pressing. With respect to other numeric keys, the corresponding characters can be input and selected by the number of times of pressing.
[0005]
However, in this character input method, erroneous input occurs such that the key to be pressed is correct but the number of presses is wrong, or the number of presses is correct but the key to be pressed is wrong.
[0006]
Therefore, in order to prevent the above-described erroneous input, an erroneous input correction method such as a reduced keyboard ambiguity removal system disclosed in JP-T-2001-509290 has been proposed.
[0007]
Japanese Unexamined Patent Application Publication No. 2001-509290 discloses a method of correcting an erroneous input which is performed when the key to be pressed is correct but the number of times of pressing is wrong among the erroneous input types described above. ing.
[0008]
In other words, when inputting characters, pay attention to the order in which the keys are pressed, prepare a dictionary in which the order and the corresponding words are recorded in advance, store the order when inputting the characters, and adopt the word whose order information matches. I do. In addition, when there are a plurality of matching words, character input correction is performed by displaying and selecting an input selection candidate list.
[0009]
[Patent Document 1]
JP-A-61-195047 [Patent Document 2]
JP 2001-509290 A
[Problems to be solved by the invention]
However, in the conventional input correction method described above, it is possible to correct the character input when the key pressed is incorrect in the number of times the key is pressed. It is impossible to correct.
[0011]
Therefore, an object of the present invention is to provide a character correction method and a character input device that can correct an erroneous input due to an error in a pressed key at the time of key input.
[0012]
Another object of the present invention is to provide a character correction method and a character input device capable of correcting an erroneous input due to a press key error with respect to a character string included in a separately created sentence.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a plurality of characters are assigned, a key input unit that performs character input selection according to the number of presses, a storage unit in which correct character string information is recorded in advance, and A memory unit for temporarily storing input characters, and a process of comparing the character string input from the input unit with character string information recorded in the storage unit to determine correctness of the character string Unit, and a character replacement unit that determines whether the character string stored in the memory unit is correct or not, and replaces one character in the character string. When correcting an input character, a character which is physically close to the key to which the erroneously input character is assigned as a candidate for a normal input character and has the same number of presses is selected.
[0014]
According to this configuration, even when a key different from the key to which the correct input character is erroneously assigned at the time of key input is selected, a character that is physically close to the different key and has the same number of times of pressing is selected as a correction candidate. It is possible to correct erroneous input more quickly and effectively.
[0015]
As a result, the time for correcting the erroneous input at the time of erroneous input can be reduced, and as a result, the input by the key can be performed quickly.
[0016]
Also, the present invention can temporarily store a correction candidate character string obtained by replacing an erroneously input character with a normal input candidate character in the memory unit having the above configuration, and list the correction candidate character string on the display unit. For example, a character string that can be displayed and selected from the correction candidate character strings in the list display with the key can be exemplified.
[0017]
According to this configuration, there are a plurality of correct input candidate characters, and a character that matches the correct candidate character string obtained by replacing the plurality of correct candidate characters and the erroneous input character in the character string information recorded in the storage unit. When there are a plurality of strings, the user can arbitrarily select a correct input character string from the correction candidate character strings.
[0018]
Further, the present invention records the relationship between the key to which the erroneously input character is assigned and the key to which the correct input character is assigned as a database, and, based on the recorded and stored database, correctable candidate characters. May be used.
[0019]
According to this configuration, the relationship between the key to which the incorrectly input character is assigned and the key to which the correct input character is assigned is stored in the database, and priorities are given to the correction candidate characters based on the information in the database. , The erroneous input can be corrected.
[0020]
Thereby, the time required for correcting an erroneous input can be reduced. Further, the data in the database increases each time a correction is made, and a more accurate correction process is possible.
[0021]
Further, the present invention has means for separating separately created data in units of character strings, capable of temporarily storing the separated character strings and processing the respective character strings. Can be exemplified.
[0022]
According to this configuration, it is possible to correct a character string in a separately input sentence by the above-described method.
[0023]
The e-mail received as the separately created text can be exemplified.
[0024]
Further, the above-described correction processing may be automatically performed simultaneously with the key input. In this case, automatic correction and manual correction may be arbitrarily selectable.
[0025]
According to this configuration, the erroneous input is corrected at the same time as the character input, so that the text can be quickly created.
[0026]
Further, when the key is not pressed for a predetermined time, an example in which the input is determined to be completed can be exemplified.
[0027]
In addition, when selecting a correction candidate character having the above-described configuration, a case where a character is input and the correction candidate is canceled and input of characters to the character string is continued can be exemplified.
[0028]
According to this configuration, when a part of the character string is similar to the character string recorded in the storage unit and no erroneous input occurs, the input can be continued without unnecessary correction, and , The accuracy of character input can be improved.
[0029]
The present invention can be widely applied to character strings created by key input. For example, words included in languages such as English and Japanese, and character strings such as telephone numbers and e-mail addresses can be used.
[0030]
For example, in the case of Japanese input, the division into character strings may be performed at the time of kanji conversion.
[0031]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0032]
1 is a front view of a mobile phone as an example of a character input device according to the present invention.
[0033]
The mobile phone A shown in FIG. 1 displays a transmitting section 1 for inputting voice, a receiving section 2 for generating received voice, an input key 3 for performing various inputs, and various information. , And an antenna unit 5 for receiving radio waves.
[0034]
The input keys 3 include a numeric keypad 31 having “1”, “2”,..., “9”, “0” keys, and “*” and “#” keys, an enter key 32, and an incoming / outgoing key 33. , A disconnect key 34 and a mode key 35 for switching the input mode.
[0035]
In addition, alphabets and hiragana are assigned to each numeric keypad 31 in addition to numbers. For example, in the case of the "2" key 312, in addition to the numeral 2, alphabetic "A", "B", "C" and hiragana lines are assigned. Each input of numbers, alphabets, and hiragana is switched by pressing the mode key 35.
[0036]
Taking the “2” key 312 as an example, in the numeric input mode, the number “2” is input as many times as the number of times the “2” key 312 is pressed. In the alphabet input mode, input selection characters change in the order of “A”, “B”, “C”, “a”, “b”, and “c” according to the number of times of pressing. In the hiragana input mode, the order changes in the order of "ka", "ki", ..., "ko", and returns to "ka".
[0037]
With respect to other keys, numbers, alphabets, and hiragana can be input by the same operation.
[0038]
FIG. 2 shows a block diagram of the mobile phone A shown in FIG.
[0039]
The mobile phone A is provided with a key input unit 3 to which a plurality of characters are assigned and for inputting characters according to the number of times of pressing, a display unit 4 for displaying the characters input from the key input unit 3, and correct character string information in advance. A storage unit 92 in which a character is input, a memory unit 93 for temporarily storing characters input from the input unit 3, a character string input from the input unit 3, and a character string stored in the storage unit 92 A processing unit 91 that compares information to determine correctness of a character string; a character replacement unit 95 that determines correctness of a character string stored in a memory unit 93 and replaces one character in the character string; And a CPU including a character replacement unit 95 for controlling the mobile phone.
(Example 1)
Next, an operation when a character is input with the mobile phone A shown in FIG. 1 will be described with reference to the drawings.
FIG. 3A is an enlarged view of the numeric keypad 31 of the mobile phone shown in FIG. FIG. 3B is a diagram illustrating an example in which characters are input using the mobile phone illustrated in FIG. 1. FIG. 4 is a flowchart showing the operation of the mobile phone shown in FIG. That is, FIGS. 3A and 3B are examples of selection of correction candidate characters when "TESJ" is erroneously input when "TEST" is input as an example of the present invention.
[0041]
When the correct input “TEST” 66 is erroneously input as “TESJ” 61, that is, when the “8” key 318 is pressed and “T” is selected, the “5” key 315 is erroneously pressed to select “T”. "Will be described as an example. In this case, "J" is input by pressing the "2" key 312 to press "A", pressing the "4" key 314 to press "G", pressing the "6" key 316 to press "M" and "M". This is considered to be an erroneous input when the “8” key 318 is pressed to select “T”. In other words, “J” is selected by pressing the “5” key 3151 times, and is originally physically close to the “5” key 315, in other words, adjacent to the up, down, left, and right. One of the keys 312, “4” key 314, “6” key 316, and “8” key 318 is depressed and input selection is considered (see FIG. 3A).
[0042]
Assuming that the above physically close key is the positive input key, in the case of “TESJ” in FIG. 3B, the “8” key 318 is pressed once and the “T” is pressed once with the “5” key 315 The "J" and "7" keys 317 are pressed once, and the "P" key and the "9" key 319 are pressed once "W" and "JPW" 62 as replacement character candidates. Similarly, for "E", "B" and "N", "BN" 63, for "S", "G" and "T", "GT" 64, for "J", "A", “G”, “M”, “T”, and “AGMT” 65 are respectively selected as replacement character candidates (see FIG. 3B). Similar replacement target characters are set for other characters.
[0043]
Next, a procedure for correcting an erroneous input using the above-described setting of the character to be replaced will be described with reference to FIGS.
[0044]
First, a character string input from the key is compared with a character string in a dictionary prepared in advance in the mobile phone A (step S11). If there is a match among the character strings stored in the dictionary, the process ends as there is no erroneous input. If there is no matching character string in the dictionary, a search is made for a character to be replaced in the character string (step S12). After the search, the searched replacement target character and the correction candidate character are replaced (step S13).
[0045]
The character string obtained by replacing the character to be replaced with the correction candidate character is compared again with the character string stored in the dictionary (step S14). If there is a matching character string in the dictionary, the processing is terminated assuming that the erroneous input has been corrected. If there is no matching character string, the character replacement process in step S13 is monitored, and it is determined whether or not a correction candidate character of the character to be replaced remains (step S15).
[0046]
If there are any remaining correction candidate characters, the process returns to step S13 to perform the processing. If no characters remain, it is determined whether or not the character to be replaced is the last character of the character string in the input character string (step S16). If it is not the last character, the replacement target character is changed (step S17), and the process returns to step S13 to perform a correction process. If the replacement target character is the last character, the process ends.
[0047]
(Example 2)
FIG. 5 is a flowchart showing another character correction method of the character input device according to the present invention.
First, a character string input by a key is compared with a character string stored in a dictionary prepared in advance in the mobile phone (step S21). If there is a character string that matches the input character string in the dictionary, it is determined that there is no erroneous input, and the process ends. If there is no character string that matches the character string stored in the dictionary, the input character string is searched for a character to be replaced (step S22). The replacement target character is replaced with the correction candidate character (step S23).
[0048]
The replaced character string is compared again with the character string stored in the dictionary (step S24). If there is a matching character string as a result of the comparison, the input character string is stored in the memory as being corrected by erroneous input correction (step S25). After storing in the memory and when there is no matching character string, it is determined whether or not a correction candidate character remains in the replacement target character (step S26).
[0049]
If there are any remaining correction candidate characters, the process returns to step S23 to perform the processing. If there are no remaining correction candidate characters, it is determined whether or not the character currently undergoing the replacement process in the input character string is the last character to be replaced in the character string (step S27). If it is not the last character, the replacement target character is changed (step S28), and the process returns to step S23 to perform the processing. If it is the last character, a list of the correct input word candidates stored in the memory in step S25 is displayed on the display unit as correction candidate options (step S29). After that, the process ends.
[0050]
(Example 3)
FIG. 6 is a diagram showing correction candidates for the input “J”. FIG. 6A is a schematic enlarged view of the numeric keypad, and FIG. 6B is a diagram showing a procedure for correcting the input “J”.
The numeric keypad 31 shown in FIG. 6A is the same as that shown in FIG. 3A, and substantially the same parts are denoted by the same reference numerals.
[0051]
As shown in FIG. 6B, “AGMT” 71 is a correction candidate character for input “J” 70. The number of times the erroneous input “J” has been corrected by the mobile phone A in the past is converted into a positive input in consideration of what is left as the database 72. According to the database 72 shown here, "A" had 5 errors, "G" had 2 errors, "M" had 1 error, and "T" had 8 errors.
[0052]
When the data of the database 72 is reflected and the characters of the correction candidates are rearranged by priorities, "TAGM" 73 is obtained. The replacement target characters in the input character string are replaced with correction candidate characters in order of priority. That is, the replacement of the input “J” is switched in the order of “T”, “A”, “G”, and “M”. Then, when the character string stored in the dictionary is compared with the character string stored in the dictionary and the character string matches the character string stored in the dictionary, the replaced character is stored as a correct input character in the database 72 as a correction candidate for the input “J”.
[0053]
In this way, the correction candidate character is set based on the tendency of erroneous input for each character, so that the character can be quickly replaced with the correct input character.
[0054]
(Example 4)
FIG. 7 is a flowchart showing the operation of correcting the character string in the e-mail received by the mobile phone shown in FIG.
First, the text in the received e-mail is divided into character strings (step S31). Thereafter, the divided character string is recognized (step S32). After that, erroneous input characters are replaced according to the procedure described in the first or second embodiment (here, performed according to the procedure described in the first embodiment) (step S33).
[0055]
Then, it is determined whether or not the replacement character string is the last character string in the received sentence (step S34). If it is the last character string, the process ends. If it is not the last character string, the correction target character string is changed to the next character string (step S35), and the process returns to step S32 to execute the processing again.
[0056]
In the above embodiment, the input of English words has been described as an example.However, the present invention is not limited to this. Can be.
[0057]
Further, in the above-described embodiment, the ten-key pad has been described as an example of the input unit. However, the present invention is not limited to this, and the present invention is applied to an input device having a key in which a plurality of characters are assigned to one key. can do.
[0058]
Each of the above-described embodiments illustrates a mobile phone as a character input device according to the present invention. However, the present invention is not limited to this. A plurality of characters are assigned to each key, and characters are input by the number of key presses. The choice can be widely adopted.
[0059]
【The invention's effect】
According to the present invention, it is an object of the present invention to provide a character input device capable of easily and quickly correcting an erroneous input due to an incorrectly pressed key at the time of key input.
[0060]
Another object of the present invention is to provide a character input device capable of easily and quickly correcting an erroneous input due to a wrong press key for a character string included in a separately created text.
[Brief description of the drawings]
FIG. 1 is a front view of a mobile phone as an example of a character input device according to the present invention.
FIG. 2 is a block diagram of the mobile phone shown in FIG.
3A is an enlarged view of a numeric keypad of the mobile phone shown in FIG. 1, and FIG. 3B is a schematic view showing correction of a key input “TESJ”.
FIG. 4 is a flowchart showing an operation of the character input device shown in FIG. 1;
FIG. 5 is a flowchart showing the operation of another example of the character input device according to the present invention.
6A is an enlarged view of a numeric keypad of the mobile phone shown in FIG. 1, and FIG. 6B is a schematic view showing a method of prioritizing correction candidate characters for an input “J”.
FIG. 7 is a flowchart showing the operation of still another example of the character input device according to the present invention.
[Explanation of symbols]
A Mobile phone 1 Receiver 2 Transmitter 3 Key input unit 31 Numeric keypad 32 Enter key 33 Send / receive key 34 End key 35 Mode key 4 Display unit 5 Antenna unit

Claims (14)

In a character input device having a plurality of keys, a plurality of characters are assigned to each key, and an input character is determined by the number of times the key is pressed,
When correcting an erroneous input character in a character string input by a key, select a candidate that is physically close to the key to which the erroneously input character is assigned as a candidate for a correct input character and has the same number of presses. A character correction method characterized by: Correction candidate character strings obtained by replacing erroneous input characters with correction candidate characters can be temporarily stored,
The display unit can display a list of the correction candidate character strings,
2. The character correction method according to claim 1, wherein the key can be selected from correction candidate character strings in the list display. Request as a database to record the relationship between keys to which incorrectly input characters are assigned and keys to which correct input characters are assigned, and to set priorities for correction candidate characters based on the recorded and accumulated database The character correction method according to claim 1 or 2. It has a means to separate separately input data in units of character strings,
3. The character correction method according to claim 1, wherein each of the separated character strings is temporarily stored, and each of the character strings can be operated. 5. The character correction method according to claim 1, wherein processing from the key input to the correction of the erroneous input is automatically performed. 4. The character correction method according to claim 2, wherein it is determined that the character input has been completed if the key is not pressed for a predetermined time. 7. The character correction method according to claim 2, wherein when selecting a correction character candidate, if the character input continues thereafter, the candidate is canceled. A key input unit to which a plurality of characters are assigned and which performs character input selection according to the number of presses;
A storage unit in which correct character string information is recorded in advance,
A memory unit for temporarily storing characters input from the input unit,
A processing unit that compares the character string input from the input unit and character string information stored in a dictionary prepared in advance in the storage unit and determines whether the character string is correct or not;
For a character group stored in the memory unit, the character input device having a character replacement unit that determines whether the character group is correct or incorrect and replaces one character in the character group,
The processing unit physically corrects a key of the key input unit to which the erroneously input character is assigned as a candidate for a correct input character when correcting the erroneous input character with respect to the input character string. A character input device for selecting an object that is close and has the same number of presses. The memory unit can temporarily store a correction candidate character string obtained by replacing an erroneously input character with a correction candidate character,
The display unit can display a list of the correction candidate character strings,
9. The character input device according to claim 8, wherein the key can be selected from correction candidate character strings in the list display. Request as a database to record the relationship between keys to which incorrectly input characters are assigned and keys to which correct input characters are assigned, and to set priorities for correction candidate characters based on the recorded and accumulated database The character input device according to claim 8 or 9. It has means to separate separately created data in character string units,
10. The character input device according to claim 8, wherein each of the separated character strings is temporarily stored, and each of the character strings can be operated. The character input device according to any one of claims 8 to 11, wherein a process from the key input to the correction of the erroneous input is automatically performed. 11. The character input device according to claim 9, wherein it is determined that the character input has been completed if the key is not pressed for a predetermined time. 14. The character input device according to claim 9, wherein when selecting a correction character candidate, if the character input continues thereafter, the candidate is canceled.

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