WO2002082789A1 - Apparatus for inputting character data - Google Patents

Apparatus for inputting character data Download PDF

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Publication number
WO2002082789A1
WO2002082789A1 PCT/KR2002/000573 KR0200573W WO02082789A1 WO 2002082789 A1 WO2002082789 A1 WO 2002082789A1 KR 0200573 W KR0200573 W KR 0200573W WO 02082789 A1 WO02082789 A1 WO 02082789A1
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WO
WIPO (PCT)
Prior art keywords
forming
input key
key
letters
characters assigned
Prior art date
Application number
PCT/KR2002/000573
Other languages
French (fr)
Inventor
Byung-Hoon Kim
Sang-Keun Kim
Original Assignee
Amasasoft Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR10-2001-0017761A priority Critical patent/KR100392353B1/en
Priority to KR2001/17761 priority
Application filed by Amasasoft Co., Ltd. filed Critical Amasasoft Co., Ltd.
Publication of WO2002082789A1 publication Critical patent/WO2002082789A1/en

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/023Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
    • G06F3/0233Character input methods
    • G06F3/0235Character input methods using chord techniques

Abstract

An apparatus for inputting character data on the basis of a compact keypad. The apparatus comprises the keypad (10) including a plurality of input keys and keys '*' and '#', each input key having characters assigned thereto, the characters having a character belonging to a reference group, a character belonging to a first group arranged on the left side of the reference group character, a character belonging to a second group arranged on the right side of the reference group, and a character belonging to a third group arranged below the reference group character; a key-code storage unit (20) for storing character-unit key codes; and a key-code processor (30) for extracting and outputting the key code form the key-code storage unit (20).

Description

APPARATUS FOR INPUTTING CHARACTER DATA_
Technical Field
The present invention relates to an apparatus for inputting character data, and more particularly to an apparatus for inputting character data, which can easily and rapidly input the character data using a compact keypad having 12 keys.
Background Art
Radio communication terminals having compact keypads are widely used according to the development of radio communications. Here, the radio communication terminals, including a portable telephone, a personal digital assistant (PDA), various remote-control devices, etc., all represent apparatuses for transmitting and receiving data or transferring a signal.
Conventionally, a size of a radio communication terminal is compact so that a user can conveniently carry it. Similarly, a size of a keypad provided in the radio communication terminal is compact. As described above, the compact keypad of the radio communication terminal represents the keypad having 12 keys, which are used to input a plurality of numbers and letters.
The compact keypad may further include a number of keys to be added to the 12 keys. Basically, the compact keypad includes the 12 keys for inputting numbers in the radio communication terminal. The compact keypad may be employed in an electronic device irrespective of communications and a wired terminal such as a wired telephone.
The compact keypad is mainly used to input numbers. However, according to the development of communication techniques, the user can input various types of data. Now, the compact keypad is used for radio Internet as well as character message transmission.
In an environment that portable terminals are universally used, a user uses a conventional data input method as it is. Because there is a problem in that the user cannot efficiently and conveniently input character data using the conventional data input method, it will be difficult to maintain the conventional data input method in the future.
A method for inputting an English letter using the compact keypad is almost the same in all parts of the world. In other words, all parts of the world employ a conventional multi-stroke data input method in order to input the English letter using the compact keypad. In the conventional multi-stroke data input method, a user inputs the letter by repeatedly stroking one key the number of times corresponding to a letter's position printed on the key, on which three to four letters are printed in sequence.
For example, using a key with a number "7" on which four letters "p, q, r, s" are printed, the user inputs a first letter "p" by stroking the key once, inputs a second letter λΛq" by stroking the key twice, inputs a third letter "r" by stroking the key three times, and inputs a fourth letter "s" by stroking the key four times. This conventional multi-stroke data input method is based on a simplest input rule.
However, there are various problems in the conventional multi-stroke data input method. For example, the conventional multi-stroke data input method is inefficient in that the letter ΛΛs" is frequently used but the user should successively stroke the key four times to input the letter "s" being frequently used. Because an error in stroking the key may be caused where the user successively strokes the key four times, the user should concentrate on stroking the key to prevent such error. At this time, the user may experience frustration.
If the user inputs the letters "ABC" arranged on a key with a number λ2" in the compact keypad using the conventional multi-stroke data input method, the user should stroke the key "2" once to input the letter "A", stroke the key twice to input the letter "B" and stroke the key three times to input the letter "C". Where the user inputs the letters "AA" in the conventional multi-stroke data input method, the user should successively stroke the key "2" twice. Similarly, where the user inputs the letter "B", the user should successively stroke the key "2" twice. As a result, there is a problem that procedures of inputting the letters "AA" and "B", being different from each other, are the same. To address the problem in the conventional multi-stroke data input method, the following two ways are used.
Where the user inputs the letters "AA", the user first strokes the key "2" once. Then, if a cursor moves to a right direction after the user waits two beats, the user re-strokes the key "2". Meanwhile, to input the letter "B", the user successively strokes the key "2" twice.
If the user inputs the letters "CAB" using the conventional multi-stroke data input method, the user should successively stroke the key "2" six times. Here, it takes two beats to distinguish the letters "C" and "A", and it takes two beats to distinguish the letters "A" and "B". Accordingly, it takes ten beats to input the letters "CAB". In the conventional multi-stroke data input method, the user should stroke the key once, twice, three times or four times to input a first, second, third or fourth letter printed on a key. Further, because the conventional multi- stroke data input method needs an additional process to fix an inputted letter, there is a disadvantage in that an input speed is slow and a letter input procedure is not rational in the conventional multi-stroke data input method.
Disclosure of the Invention
Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a method for inputting character data, which can efficiently input the character data using a compact keypad and improve an input speed by reducing the number of strokes needed for inputting the character data.
It is another object of the present invention to provide a method for inputting character data, which can remove inconveniencies caused in a conventional input method and easily input the character data such as a variety of general and special characters, etc. on the basis of the same input rule.
In accordance with an aspect of the present invention, the above and other objects can be accomplished by the provision of an apparatus for inputting character data on the basis of a compact keypad, comprising: the keypad including a plurality of input keys and keys "*" and "#", each input key having characters assigned thereto, the characters having a character belonging to a reference group, a character belonging to a first group arranged on the left side of the reference group character, a character belonging to a second group arranged on the right side of the reference group, and a character belonging to a third group arranged below the reference group character; a key-code storage unit for storing character-unit key codes; and a key-code processor for extracting and outputting a key code from the key-code storage unit, the key code including: a key code corresponding to the reference group character if the input key is independently inputted, a key code corresponding to the first group character if a combination of the key "*" and the input key is inputted, a key code corresponding to the second group character if a combination of the key "#" and the input key is inputted, and a key code corresponding to the third group character if a combination of the keys "#" and "*" and the input key is inputted. Preferably, the key-code processor may extract and output the key code from the key-code storage unit when two keys adjacent to each other among the keys "#" and "*" and the input keys are combined, the key code including: the key code corresponding to the first group character if two keys vertically adjacent to each other are combined and the key code corresponding to the second group character if two keys horizontally adjacent to each other are combined, or the key code corresponding to the second group character if two keys vertically adjacent to each other are combined and the key code corresponding to the first group character if two keys horizontally adjacent to each other are combined.
Brief Description of the Drawings
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
Fig. 1 is a block diagram showing a system for inputting character data in accordance with the present invention;
Fig. 2 is a view schematically showing a compact keypad for English in accordance with a first embodiment of the present invention; Fig. 3 is a view schematically showing a compact keypad for German in accordance with a second embodiment of the present invention;
Fig. 4 is a view schematically showing a compact keypad for French in accordance with a third embodiment of the present invention;
Fig. 5 is a view schematically showing a compact keypad for Spanish in accordance with a fourth embodiment of the present invention; Fig. 6 is a view schematically showing a compact keypad for Portuguese in accordance with a fifth embodiment of the present invention;
Fig. 7 is a view schematically showing a compact keypad for Italian in accordance with a sixth embodiment of the present invention;
Fig. 8 is a view schematically showing a compact keypad for Dutch in accordance with a seventh embodiment of the present invention;
Fig. 9 is a view schematically showing a compact keypad for Danish in accordance with an eighth embodiment of the present invention;
Fig. 10 is a view schematically showing a compact keypad for Finnish in accordance with a ninth embodiment of the present invention; Fig. 11 is a view schematically showing a compact keypad for Polish in accordance with a tenth embodiment of the present invention;
Fig. 12 is a view schematically showing a compact keypad for Vietnamese in accordance with an eleventh embodiment of the present invention;
Fig. 13 is a view schematically showing a compact keypad for Greek in accordance with a twelfth embodiment of the present invention;
Fig. 14 is a view schematically showing a compact keypad for Hebrew in accordance with a thirteenth embodiment of the present invention;
Fig. 15 is a view schematically showing a compact keypad for Arabic in accordance with a fourteenth embodiment of the present invention; and Fig. 16 is a view schematically showing a compact keypad for Chinese in accordance with a fifteenth embodiment of the present invention.
Best Mode for Carrying Out the Invention
Preferred embodiments of the present invention will be described in detail with reference to the annexed drawings so that the present invention can be readily understood and reproduced.
Fig. 1 is a block diagram showing a system for inputting character data in accordance with the present invention. As shown in Fig. 1, the system comprises a keypad 10, a key-code storage unit 20 and a key-code processor 30. The keypad 10 is a compact keypad basically having
12 keys. Numbers and letters are inputted through the keypad 10. In this embodiment, it is assumed that the 12 keys include 10 number keys, a key "*" and a key "#". Alternatively, the keypad 10 can further include a plurality of keys for supplementary functions, in addition to the 12 keys.
As described above, the keypad 10 can include any input unit, which has the 12 keys, i.e., keys with numbers "0" to "9", the key "*" and the key "#". In accordance with the present invention, this keypad 10 can be employed in all apparatuses having the keypad 10. Further, data to be inputted through the keypad 10 is not limited to numbers and letters, but a variety of data such as general and special characters including numbers, letters, symbols, etc. can be inputted through the keypad 10.
Characters are assigned respectively to keys of the keypad 10 to form first, reference, second and third groups. A character belonging to the reference group is referred to as a reference group character. A character belonging to the first group is arranged on the left side of the reference group character and referred to as a first group character. A character belonging to the second group is arranged on the right side of the reference group character and referred to as a second group character. A character belonging to the third group is arranged below the reference group key and referred to as a third group character. The reference, first, second and third group characters are assigned to an input key of the 12 keys included in the keypad 10 and printed on the input key. That is, at least four characters can be assigned to one input key. In the present embodiment, it is assumed that four characters are assigned to the one input key. The characters assigned to the input key correspond to a unique key code, respectively, and unique key codes are stored character by character in the key- code storage unit 20.
In accordance with a characteristic of the present invention, the reference group character described above is preferably assigned as a character being used more frequently than the first, second and third group characters. The characters assigned to the input key are variably arranged according to field of use, efficiency, language of use, input data type, etc. In accordance with another characteristic of the present invention, the first or second group character is preferably inputted when the key "*" or "#" and an input key are simultaneously stroked. Alternatively, the key "*" or "#" and the input key can be sequentially stroked one by one.
Because it is impossible that the key "*" or "#" and the input key are actually simultaneously stroked, a predetermined limitation period is set as a time interval between inputs of the key "*" or "#" and the input key. If one of the key "*" or "#" and the input key is stroked and then the other key is stroked within the predetermined limitation period, the key "*" or "#" and the input key are preferably processed as simultaneously inputted keys. The predetermined limitation period described above is preferably set as a very short time to reduce a period of time for character-data input. In more detail, for example, the predetermined limitation period can be preferably set as a period between 10ms and 100ms, and more preferably to 41ms.
In other words, if a first key is inputted and then a second key is inputted within a limitation period of 41ms, the first and second keys are processed as simultaneously inputted keys. In accordance with a further characteristic of the present invention, if one of the key "*" or "#" and the input key is stroked and then the other key is stroked within the predetermined limitation period, the key "*" or "#" and the input key are preferably processed as simultaneously inputted keys. The key-code storage unit 20 stores character-unit key codes. In other words, the key-code storage unit 20 stores a plurality of group characters assigned to input keys corresponding to the keys . with the 10 numbers. Preferably, the group characters are stored group by group.
When a user simultaneously strokes two keys adjacent to each other among the keys "*" and "#" and the input keys, a first or second group character to be recognized is stored in the key-code storage unit 20. As described above, when the user inputs the first or second group character, the predetermined limitation period is preferably set as the time interval between two inputs.
The group characters described above are stored as the key codes in the key-code storage unit 20. The key codes corresponding to the group characters can be classified and stored in a key-code table. Alternatively, the key codes can be stored in different key-code tables.
The key-code processor 30 recognizes a key input from the keypad 10, and the key-code processor 30 extracts a key code corresponding to the key input from the key-code storage unit 20 and outputs the extracted key code. The key-code processor 30 can include a key scanner (not shown) for scanning inputs of keys arranged on the keypad 10. Further, the key-code storage unit 20 can include a character table (not shown) in which the characters are stored on the basis of key scan values. Alternatively, the key-code storage unit 20 can include a plurality of character tables. The key-code processor 30 senses the key input from the keypad 10 and the key-code processor 30 extracts a key code corresponding to the sensed key input from the character table and outputs the extracted key code.
The key-code processor 30 can include other means being conventionally employed in an apparatus for inputting data using the keypad. Because the other means described above is well known to those in the art, the description of the other means is omitted.
When the user independently inputs one of keys, the key-code processor 30 extracts a key code corresponding to the reference group character from the key-code storage unit 20 and outputs the extracted key code.
When the user simultaneously or sequentially inputs the key "*" and one of the input keys, the key-code processor 30 extracts a key code corresponding to the first group character from the key-code storage unit 20 and outputs the extracted key code.
When the user simultaneously or sequentially inputs the key "#" and one of input keys, the key-code processor 30 extracts a key code corresponding to the second group character from the key-code storage unit 20 and outputs the extracted key code.
When the user simultaneously or sequentially inputs the key "*", the key "#" and one of the input keys, the key-code processor 30 extracts a key code corresponding to a third group character from the key-code storage unit
20 and outputs the extracted key code.
When the user simultaneously inputs two keys adjacent to each other among the keys "*" and "#" and the input keys, the key-code processor 30 extracts a key code corresponding to a first or second group character from the key-code storage unit 20 and outputs the extracted key code .
The key-code processor 30 extracts a key code corresponding to a key input from the key-code storage unit 20 and a character corresponding to the key code is displayed on a display unit (not shown) .
In accordance with another characteristic of the present invention, the key-code processor 30 can preferably change key codes corresponding to reference, first, second and third group characters on the basis of general and special characters including desired letters, symbols, etc.
Fig. 2 is a view schematically showing a compact keypad for use in inputting English character data in accordance with a first embodiment of the present invention. As shown in Fig. 2, the compact keypad in this embodiment comprises 10 input keys corresponding to the keys with 10 numbers, the key "*" and the key "#". Three or four characters are assigned to each of the input keys with 10 numbers "0" to "9". The characters assigned to each input key are printed thereon. The user can easily identify corresponding groups of the characters assigned to an input key because the characters are printed and arranged on a group basis.
The key "*" is inputted before an input key when a left-printed character on the input key is desired to be inputted. Further, the key "*" and the input key can be simultaneously inputted. Similarly, the key "#" is inputted before the input key when a right-printed character on the input key is desired to be inputted. Further, the key "#" and the input key can be simultaneously inputted.
In this embodiment, symbols "," and ":" and letters "a", "d", "g", "j", "m", "p", "t" and "w" are assigned respectively to "0" - "9" keys to form a first group. Here, the symbols and letters of the first group are referred to as first group characters. Symbols "." and "@" and letters "b", "e", "h", "k", "n", "r", "u" and "x" are assigned respectively to the "0" - "9" keys to form a reference group. Here, the symbols and letters of the reference group are referred to as reference group characters. Symbols "'" and "/" and letters "c", "f", "i", "1", "o", "s", "v" and "y" are assigned respectively to the "0" - "9" keys to form a second group. Here, the symbols and letters of the second group are referred to as second group characters. A symbol "?" and letters "q" and z" are assigned respectively to tne "1", "7" and "9" keys to form a third group. Here, the symbol and letters of the third group are referred to as third group characters.
If the user desires to input a reference group character as described above, the user strokes an input key on which the reference group character is printed, whereby the reference group character is inputted. Further, if the user desires to input a first group character, the user simultaneously or sequentially strokes the key "*" and an input key on which the first group character is printed, whereby the first group character is inputted. Furthermore, if the user desires to input a second group character, the user simultaneously or sequentially strokes the key "#" and an input key on which the second group character is printed, whereby the second group character is inputted.
If the user desires to input the letter "a", the user should simultaneously or sequentially input the key "*" and the key "2". Further, if the user desires to input the letter "c", the user should simultaneously or sequentially input the key "#" and the key "2". Where the key "*" and the key "2" are stroked, the letter "a" is preferably inputted irrespectively of order of key inputs if a time interval between two inputs is within the predetermined limitation period. Where the key "#" and the key "2" are stroked, the letter "c" is preferably inputted irrespectively of order of key inputs if a time interval between two inputs is within the predetermined limitation period. Accordingly, the user can input a reference group character at one stroke and input a first group character left-printed or a second group character right-printed within one beat. Fourth characters (being general and special characters including symbols, an accent mark and letters) of the third group characters are printed on the 10 number keys . A third group character can be inputted when the user simultaneously or sequentially inputs the key "*" and the key "#" and then inputs one of the other keys. The key "*" and the key "#" can be inputted irrespectively of order of key inputs because result values are the same. In order words, whether the key "*" or the key "#" is first inputted, the result values are the same. For example, if the user desires to input an English letter "q", the user should simultaneously or sequentially stroke the key "*" and the key "#" and stroke a key "7". A result value of a case where the user inputs the key "*", the key "#" and the key "7" in this order is equal to that of a case where the user inputs the key "#", the key "*" and the key "7" in this order.
In accordance with another characteristic of the present invention, if two vertically adjacent keys or two horizontally adjacent keys are simultaneously stroked, a first or second group character is preferably inputted.
In accordance with another characteristic of the present invention, the symbol "/" is inputted if the keys "1" and "2" are simultaneously stroked. The symbol ":" is inputted if the keys "1" and "4" are simultaneously stroked. The letter "c" is inputted if the keys "2" and "3" are simultaneously stroked. The letter "a" is inputted if the keys "2" and "5" are simultaneously stroked. The letter "d" is inputted if the keys "3" and "6" are simultaneously stroked. The letter "i" is inputted if the keys "4" and "5" are simultaneously stroked. The letter "g" is inputted if the keys "4" and "7" are simultaneously stroked. The letter "1" is inputted if the keys "5" and "6" are simultaneously stroked. The letter "j" is inputted if the keys "5" and "8" are simultaneously stroked. The letter "m" is inputted if the keys "6" and "9" are simultaneously stroked. The letter "s" is inputted if the keys "7" and "8" are simultaneously stroked. The letter "v" is inputted if the keys "8" and "9" are simultaneously stroked. The letter "t" is inputted if the keys "8" and "0" are simultaneously stroked. The letter "p" is inputted if the key "*" and the key "7" are simultaneously stroked. The symbol "," is inputted if the key "*" and the key "0" are simultaneously stroked. The letter "y" is inputted if the key "#" and the key "9" are simultaneously stroked. The symbol "'" is inputted if the key "#" and the key "0" are simultaneously stroked. According to this input method, the reference group character is inputted at one stroke and the first or second group character is inputted within one beat.
Where the user inputs a character having an accent mark "'" in the French language, the user can input the character having the accent mark using the input method described above. For example, if the user inputs a letter' "e" by stroking a key "3" and then inputs an accent mark "'" being a reference group character by stroking a key "1", a letter "e" is inputted. As shown in Fig. 4, the accent mark "'" corresponds to the reference group character on the key "1". First and second group characters are arranged on the left and right sides of the reference group characters, respectively. A third group character is arranged below the reference group character. Accordingly, the user can input the characters using the input method described above. Fig. 2 is a view schematically showing a compact keypad in accordance with a first embodiment of the present invention. As shown in Fig. 2, English character data can be inputted by the input method described above in accordance with the first embodiment of the present invention.
Fig. 3 is a view schematically showing a compact keypad in accordance with a second embodiment of the present invention. As shown in Fig. 3, German character data can be inputted by the input method described above in accordance with the second embodiment of the present invention.
Fig. 4 is a view schematically showing a compact keypad in accordance with a third embodiment of the present invention. As shown in Fig. 4, French character data can be inputted by the input method described above in accordance with the third embodiment of the present invention.
Fig. 5 is a view schematically showing a compact keypad in accordance with a fourth embodiment of the present invention. As shown in Fig. 5, Spanish character data can be inputted by the input method described above in accordance with the fourth embodiment of the present invention.
Fig. 6 is a view schematically showing a compact keypad in accordance with a fifth embodiment of the present invention. As shown in Fig. 6, Portuguese character data can be inputted by the input method described above in accordance with the fifth embodiment of the present invention. Fig. 7 is a view schematically showing a compact keypad in accordance with a sixth embodiment of the present invention. As shown in Fig. 7, Italian character data can be inputted by the input method described above in accordance with the sixth embodiment of the present invention.
Fig. 8 is a view schematically showing a compact keypad in accordance with a seventh embodiment of the present invention. As shown in Fig. 8, Dutch character data can be inputted by the input method described above in accordance with the seventh embodiment of the present invention.
Fig. 9 is a view schematically showing a compact keypad in accordance with an eighth embodiment of the present invention. As shown in Fig. 9, Danish character data can be inputted by the input method described above in accordance with the eighth embodiment of the present invention.
Fig. 10 is a view schematically showing a compact keypad in accordance with a ninth embodiment of the present invention. As shown in Fig. 10, Finnish character data can be inputted by the input method described above in accordance with the ninth embodiment of the present invention.
Fig. 11 is a view schematically showing a compact keypad in accordance with a tenth embodiment of the present invention. As shown in Fig. 11, Polish character data can be inputted by the input method described above in accordance with the tenth embodiment of the present invention. Fig. 12 is a view schematically showing a compact keypad in accordance with an eleventh embodiment of the present invention. As shown in Fig. 12, Vietnamese character data can be inputted by the input method described above in accordance with the eleventh embodiment of the present invention. Fig. 13 is a view schematically showing a compact keypad in accordance with a twelfth embodiment of the present invention. As shown in Fig. 13, Greek character data can be inputted by the input method described above in accordance with the twelfth embodiment of the present invention.
Fig. 14 is a view schematically showing a compact keypad in accordance with a thirteenth embodiment of the present invention. As shown in Fig. 14, Hebrew character data can be inputted by the input method described above in accordance with the thirteenth embodiment of the present invention.
Fig. 15 is a view schematically showing a compact keypad in accordance with a fourteenth embodiment of the present invention. As shown in Fig. 15, Arabic character data can be inputted by the input method described above in accordance with the fourteenth embodiment of the present invention.
Fig-. 16 is a view schematically showing a compact keypad in accordance with a fifteenth embodiment of the present invention. As shown in Fig. 16, Chinese character data can be inputted by the input method described above in accordance with the fifteenth embodiment of the present invention. Industrial Applicability
As apparent from the above description, the present invention provides a method capable of easily and rapidly inputting character data using 12 input keys. In other words, the method in accordance with the present invention can improve input efficiency because all general and special characters, etc. arranged on the keys can be inputted within one beat or two beats, respectively. Further, the method in accordance with the present invention can effectively reduce the number of wrong inputs because of its simplicity.
Furthermore, when character data is inputted by the method in accordance with the present invention, an illogical character-data input can be completely excluded so that the user does not experience confusion. Any general or special character can be easily inputted by the method in accordance with the present invention.
Although the present invention has been described in connection with specific preferred embodiments, those skilled in the art will appreciate that various modifications, additions, and substitutions to the specific elements are possible, without departing from the scope and spirit of the present invention as disclosed in the accompanying claims.

Claims

Claims :
1. An apparatus for inputting character data on the basis of a compact keypad, comprising: the keypad including a plurality of input keys and keys "*" and "#", each input key having characters assigned thereto, the characters having a character belonging to a reference group, a character belonging to a first group arranged on the left side of the reference group character, a character belonging to a second group arranged on the right side of the reference group, and a character belonging to a third group arranged below the reference group character; a key-code storage unit for storing character-unit key codes; and a key-code processor for extracting and outputting a key code from the key-code storage unit, the key code including: a key code corresponding to the reference group character if the input key is independently inputted, a key code corresponding to the first group character if a combination of the key "*" and the input key is inputted, a key code corresponding to the second group character if a combination of the key "#" and the input key is inputted, and a key code corresponding to the third group character if a combination of the keys "#" and "*" and the input key is inputted.
2. The method as set forth in claim 1, wherein the key-code processor extracts and outputs the key code from the key-code storage unit when two keys adjacent to each other among the keys "#" and "*" and the input keys are combined, the key code including: the key code corresponding to the first group character if two keys vertically adjacent to each other are combined and the key code corresponding to the second group character if two keys horizontally adjacent to each other are combined, or the key code corresponding to the second group character if two keys vertically adjacent to each other are combined and the key code corresponding to the first group character if two keys horizontally adjacent to each other are combined.
3. The method as set forth in claim 1, wherein the keypad includes: symbols ":", "@", "/" forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c" forming the first, reference and second group characters assigned to an input key "2"; letters "d", "e", "f" forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters "m", "n", "o" forming the first, reference and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned to an input key "7"; letters "t", "u", "v" forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", y", "z" forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", "•", ""'" forming the first, reference and second group characters assigned to an input key "0".
4. The method as set forth in claim 2, wherein the key-code processor extracts and outputs the key code from the key-code storage unit, the key code including: a key code corresponding to a symbol "/" if a combination of input keys "1" and "2" is inputted; a key code corresponding to a symbol ":" if a combination of the input key "1" and an input key "4" is inputted; a key code corresponding to a letter "c" if a combination of the input key "2" and an input key "3" is inputted; a key code corresponding to a letter "a" if a combination of the input key "2" and an input key "5" is inputted; a key code corresponding to a letter "d" if a combination of the input key "3" and an input key "6" is inputted; a key code corresponding to a letter "i" if a combination of the input keys "4" and "5" is inputted; a key code corresponding to a letter "g" if a combination of the input key "4" and an input key "7" is inputted; a key code corresponding to a letter "1" if a combination of the input keys "5" and "6" is inputted; a key code corresponding to a letter "j" if a combination of the input key "5" and an input key "8" is inputted; a key code corresponding to a letter "m" if a combination of the key "6" and an input key "9" is inputted; a key code corresponding to a letter combination of the input keys "7" and "8" is inputted; a key code corresponding to a letter "v" if a combination of the input keys "8" and "9" is inputted; a key code corresponding to a letter "t" if a combination of the input key "8" and an input key "0" is inputted; a key code corresponding to a letter "p" if a combination of the key "*" and the input key "7" is inputted;- a key code corresponding to a symbol "," if a combination of the key "*" and the input key "0" is inputted; a key code corresponding to a letter "y" if a combination of the key "#" and the input key "9" is inputted; and a key code corresponding to a symbol "'" if a combination of the ■ key "#" and the input key "0" is inputted.
5. The method as set forth in claim 1, wherein the keypad includes: symbols "ϋ", "a", "δ", "β" forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c" forming the first, reference and second group characters assigned to an input key "2"; letters "d", "e", "f" forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters "m", "n", "o" forming the first, reference and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned to an input key "7"; letters "t", "u", "v" forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", "y", "z" forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", ".", "'" forming the first, reference and second group characters assigned to an input key "0".
6. The method as set forth in claim 1, wherein the keypad includes: symbols " ", "' ", "Λ", "" " forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c", "ς" forming the first, reference and second group characters assigned to an input key "2"; letters "d", "e", "f" forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters "m", "n", "o" forming the first, reference and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned to an input key "7"; letters "t", "u", "v" forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", "y", "z" forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", ".", "'" forming the first, reference and second group characters assigned to an input key "0".
7. The method as set forth in claim 1, wherein the keypad includes : symbols "ft", "'", "ϋ", "j " forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c", " i" forming the first, reference and second group characters assigned to an input key "2"; letters "d", "e", "f" forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters "m", "n", "o" forming the first, reference and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned to an input key "7"; letters "t", "u", "v" forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", "y", "z" forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", ".", "'" forming the first, reference and second group characters assigned to an input key "0".
8. The method as set forth in claim 1, wherein the keypad includes: symbols "~", "'", "A", λ ' forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c", "ς" forming the first, reference and second group characters assigned to an input key "2"; letters "d", "e", "f" forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters "m", "n", "o" forming the first, reference and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned to an input key "7"; letters "t", "u", "v" forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", "y", "z" forming the first, reference, second and third group characters assigned to an input key "9"; and symbols " , ", ".", "'" forming the first, reference and second group characters assigned to an input key "0".
9. The method as set forth in claim 1, wherein the keypad includes: symbols "@", " " ", "'", "?" forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c" forming the first, reference and second group characters assigned to an input key "2"; letters "d", "e", "f" forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters "m", "n", "o" forming the first, reference and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned to an input key "7"; letters "t", "u", "v" forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", "y", "z" forming the first, reference, second and third group characters assigned to an input key "9" ; and symbols ",", "•", "'" forming the first, reference and second group characters assigned to an input key "0".
10. The method as set forth in claim 1, wherein- the keypad includes: symbols """, "' ", " ", " " forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c" forming the first, reference and second group characters assigned to an input key "2"; letters "d", "e", "f" forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters "m", "n", "o" forming the first, reference and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned to an input key "7"; letters "t", "u", "v" forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", "y", "z" forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", ".", "'" forming the first, reference and second group characters assigned to an input key "0".
11. The method as set forth in claim 1, wherein the keypad includes : symbols "ø", "a", "as", "@" forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c" forming the first, reference and second group characters assigned to an input key "2"; letters "d", "e", "f" forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters " ", "n", "o" forming the first, reference and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned to an input key "7"; letters "t", "u", "v" forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", "y", "z" forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", ".", "'" forming the first, reference and second group characters assigned to an input key "0".
12. The method as set forth in claim 1, wherein" the keypad includes: symbols "δ", "a", "a", "@" forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c" forming the first, reference and second group characters assigned to an input key "2"; letters "d", "e", "f" forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters "m", "n", "o" forming the first, reference - and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned- to an input key "7"; letters "t", "u", "v" forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", "y", "z" forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", "" . ", "'" forming the first, reference and second group characters assigned to an input key "0".
13. The method as set forth in claim 1, wherein the keypad includes : symbols "1 ", "' ", "z ", "@" forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c", "a. " forming the first, reference and second group characters assigned to an input key "2"; letters "d", "e", "f", "Q " forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters "m", "n", "o" forming the first, reference and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned to an input key "7"; letters "t", "u", "v" forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", "y", "z" forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", ".", "'" forming the first, reference and second group characters assigned to an input key "0".
14. The method as set forth in claim 1, wherein the keypad includes: symbols "δ", "a", "e", "a " forming the first, reference and second group characters assigned to an input key "1"; letters "a", "b", "c", "@" forming the first, reference and second group characters assigned to an input key "2"; letters ", "e", "f", "<ϊ " forming the first, reference and second group characters assigned to an input key "3"; letters "g", "h", "i" forming the first, reference and second group characters assigned to an input key "4"; letters "j", "k", "1" forming the first, reference and second group characters assigned to an input key "5"; letters "m", "n", "o", "o'" forming the first, reference and second group characters assigned to an input key "6"; letters "p", "r", "s", "q" forming the first, reference, second and third group characters assigned to an input key "7"; letters "t", "u", "v", "u"' forming the first, reference and second group characters assigned to an input key "8"; letters "w", "x", Λy", xz" forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", ".", "'" forming the first, reference and second group characters assigned to an input key "0".
15. The method as set forth in claim 1, wherein the keypad includes: symbols "" ", "'", "ς '', "@" forming the first, reference and second group characters assigned to an input key "1"; letters "α ", "β ", " " forming the first, reference and second group characters assigned to an input key "2"; letters "δ ", "ε ", "ζ " forming the first, reference and second group characters assigned to an input key "3"; letters "η, ", "θ ", "ι " forming the first, reference and second group characters assigned to an input key "4"; letters " ", "λ ", "μ " forming the first, reference and second group characters assigned to an input key "5"; letters "v ", "ξ ", "o " forming the first, reference and second group characters assigned to an input key "6"; letters "π ", "p ", "σ " forming the first, reference, second and third group characters assigned to an input key "7"; letters "τ ", "u ", "φ " forming the first, reference and second group characters assigned to an input key "8"; letters "x ", "ψ ", "ω " forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", ".", "'" forming the first, reference and second group characters assigned to an input key "0".
16. The method as set forth in claim 1, wherein the keypad includes: symbols > "* > ® forming the first, reference and second group characters assigned to an input key "1"; letters ^ > ^ > ** forming the first, reference and second group characters assigned to an input key "2"; letters n » ** > * forming the first, reference and second group characters assigned to an input key "3"; letters *"ϊ > °> 3 forming the first, reference and second group characters assigned to an input key "4"; letters a » ' » B forming the first, reference and second group characters assigned to an input key "5"; letters '» > forming the first, reference and second group characters assigned to an input key "6"; letters V'" > 1 » !2 forming the first, reference, second and third group characters assigned to an input key "7"; letters > » forming the first, reference and second group characters assigned to an input key "8"; letters "> ' » forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ",", "•", λV" forming the first, reference and second group characters assigned to an input key "0".
17. The method as set forth in claim 1, wherein the keypad includes: symbols J» J> <•> s forming the first, reference and second group characters assigned to an input key "1"; letters C» c» £ forming the first, reference and second group characters assigned to an input key "2"; letters ^ ^ ^ forming the first, reference and second group characters assigned to an input key "3"; letters ^ <-ya' ύ forming the first, reference and second group characters assigned to an input key "4"; letters °"> °*> <* forming the first, reference and second group characters assigned to an input key "5"; letters ->> ->> ^* forming the first, reference and second group characters assigned to an input key "6"; letters p> '» <J forming the first, reference, second and third group characters assigned to an input key "7"; letters £•> £.» Λ> β forming the first, reference and second group characters assigned to an input key "8"; letters > » J> J forming the first, reference, second and third group characters assigned to an input key "9"; and symbols tf» > > tf forming the first, reference and second group characters assigned to an input key "0".
18. The method as set forth in claim 1, wherein the keypad includes: symbols *~7> Λz » π > rL_~ forming the first, reference and second group characters assigned to an input key "1"; letters / > ^ » ^ ' ^ forming the first, reference and second group characters assigned to an input key "2"; letters
Figure imgf000045_0001
forming the first, reference and second group characters assigned to an input key "3"; letters J » > ^ ' ^ forming the first, reference and second group characters assigned to an input key "4"; letters " > ^> -1 • ^ forming the first, reference and second group characters assigned to an input key "5";
-+- / γ letters > > ' ' forming the first, reference and second group characters assigned to an input key "6"; letters > ' forming the first, reference, second and third group characters assigned to an input key "7"; letters ^- > ' > ' > ^ forming the first, reference and second group characters assigned to an input key "8"; letters ^ > ' > ' forming the first, reference, second and third group characters assigned to an input key "9"; and symbols ' > ^ , ^ forming the first, reference and second group characters assigned to an input key "0".
PCT/KR2002/000573 2000-12-27 2002-04-02 Apparatus for inputting character data WO2002082789A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2837940A1 (en) * 2002-03-29 2003-10-03 Andre Marie Georges Baverel Keyboard for portable devices allowing text entry from limited number of keys, uses distribution of text characters over numeric keys determined by association of characters with phonemes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000039577A (en) * 1998-12-15 2000-07-05 박원영 Dial button code system for telephone hangul keyboard
KR20000044457A (en) * 1998-12-30 2000-07-15 윤종용 Method for operating keys of wireless terminal
KR20000049639A (en) * 2000-04-19 2000-08-05 김명수 Hangul Character Representation Using Phone Number Plate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000039577A (en) * 1998-12-15 2000-07-05 박원영 Dial button code system for telephone hangul keyboard
KR20000044457A (en) * 1998-12-30 2000-07-15 윤종용 Method for operating keys of wireless terminal
KR20000049639A (en) * 2000-04-19 2000-08-05 김명수 Hangul Character Representation Using Phone Number Plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2837940A1 (en) * 2002-03-29 2003-10-03 Andre Marie Georges Baverel Keyboard for portable devices allowing text entry from limited number of keys, uses distribution of text characters over numeric keys determined by association of characters with phonemes

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