JP2005258653A - Character input system using touch panel and mobile terminal device having the system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal device that ensures the input of characters while using a touch panel provided on a small screen. <P>SOLUTION: A character input system includes a display part 40; a touch panel 50; a key input part 60; a panel control part 22 that recognizes and outputs characters selected according to position information coming from the touch panel 50; and a character processing part 24. The character processing part 24 divides input characters into a plurality of groups of classified characters, with a group of representative characters created in which characters representing the respective groups of classified characters serve as representative characters, then displays the group of representative characters on the display part 40 in response to the input of character input operation start information. When the character inputted from the panel control part 22 is determined to be one of the representative characters, the character processing part displays on the display part 40 the group of classified characters to which that representative character belongs. When the character inputted from the panel control part 22 is determined to be one of the classified characters, the character processing part displays the group of representative characters on the display part, repeats the character input operation, and outputs the classified character selected as the determined character. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a character input system using a touch panel and a portable terminal device including the system.

  In recent years, there has been a remarkable progress in the technical progress of mobile terminal devices, especially mobile phones. Starting with voice calls as phones, the numeric keys for phone calls on mobile phones are also used for character input, and an expanded display screen By displaying an image including characters, for example, it is possible to transmit and receive an image including the Internet that has been widely used as the I mode. Recently, even mobile phones that have built-in cameras and can send captured images have appeared.

  When the phone call key of the mobile phone is also used for character input, the number keys for the phone call are 10 from 0 to 9, so usually the kana is 10 keys and the alphabet is 8 The number, kana, and alphabet are selected by switching the mode. In addition, a symbol is assigned to the “#” key, and a control function is assigned to the “*” key.

  FIG. 11 is a schematic external view showing an example of a conventional mobile phone, in which 600 is a mobile phone, 611 is an upper housing, 612 is a lower housing, 620 is a key input unit, 621 is a numeric keypad, and 622 is 4 A direction key or a jog dial, 623 is a control key, and 660 is an image display unit.

  For kana input, kana are assigned to the numeric keys in the order of each row by the arrangement of known kana 50 syllables, and are arranged in the well-known ABC order for input of the English alphabet. An alphabet is assigned to each numeric key. However, since there are ten numeric keys, a plurality of kana characters or alphabets are overlapped on one key. Therefore, since it is necessary to input a plurality of types of characters separately from one key, in the conventional method, different characters assigned to the line are selected and input according to the number of consecutive keystrokes of the same key. Is done. For example, in the case of kana character input, the [2] key to which the “ka” line is assigned is pressed five times continuously, and the [4] key to which the “ta” line is assigned is pressed once, which is a control key. When the [→] key is pressed, the [4] key assigned to the “ta” line is continuously pressed three times, and the confirmation key is pressed, the character string [Kotatsu] is input. Here, it is considered that the continuous keystroke of the same key is once stopped by the keystroke of the [→] key, and the character is determined in the same manner as when the keystroke of another key is shifted. In the case of the English alphabet, a maximum of four different alphabets are assigned to the same key, but as in the case of the kana character, the type of each character is distinguished by the number of consecutive keystrokes. Various symbols are input according to the number of consecutive keystrokes of the symbol key [#] (see Patent Document 1 and Patent Document 2).

  In this way, the current mobile phone character input is performed by combining a plurality of keys and the number of keystrokes in a limited space, so it requires some familiarity and is not necessarily used by the user. It's not easy.

Recently, in order to facilitate character input, a method of providing a touch panel on the image display unit 660 and inputting from the touch panel has been adopted. Since the image display unit 660 is narrow, when a large number of characters are displayed, an adjacent character is often touched when selecting by touching, and a method of inputting correctly in that case is also disclosed (Patent Document 3). In addition, when inputting kana characters using a display with a touch panel, a part of the Japanese syllabary diagram is displayed as a search key for the part of the screen that is necessary for the input operation, and the touch panel is touched for selection. A kana character input method is disclosed in which a kana character is input by displaying a corresponding character group on the screen using the selected character as a key and selecting a character from the character group (Patent Document 4).
JP-A-6-152711 JP-A-8-79360 JP-A-6-250788 JP 7-28581 A

  In a conventional method of using a numeric key for calling a telephone in a portable terminal device for character input, a method of selecting a number by pressing a plurality of characters assigned to one numeric key is generally used. For example, in the case of a kana character, when selecting a character arranged in the fifth row such as “ko”, the number of times of pressing is increased so that five times of pressing is necessary, and the number of times of pressing by the user is set. Since it is necessary to memorize and recognize a character, there is a problem that an intended character may not be selected.

  In the method of providing an image display unit with a touch panel and inputting from the touch panel, for example, all the kana characters 46 are displayed, and thus there is a problem that erroneous input may occur when selecting by touch. In the apparatus and method described in Patent Document 3, erroneous input can be prevented, but there are conditions, and software for that purpose must be provided. The method of Patent Literature 4 can reduce the number of characters displayed on the screen, but does not disclose a specific configuration when applied to a mobile terminal device.

  The objective of this invention is providing the portable terminal device which can input a character easily and reliably, using the touchscreen provided in the small screen.

A character input system using the touch panel of the present invention,
In the first aspect, a display unit that can display character groups in a predetermined arrangement, a touch panel that is arranged on the display unit so that the display of the display unit can be seen through, and outputs position information of a pressed position; Key input means that can output character type selection, panel control means for recognizing and outputting the character selected by position information from the touch panel, and dividing a plurality of characters to be input into a plurality of divided character groups, When the character input operation start information is input in accordance with a standard set in advance so that the representative character group is configured using the representative character group as a representative character, the representative character group is displayed on the display unit and panel control is performed. When the character entered from the part is determined to be the representative character selected from the representative character group, the character group entered from the panel control unit is displayed on the display unit with the grouped character group to which the representative character belongs. When it is determined that the selected character from the divided character groups causes a display section to display the representative character group, and a character processing means for outputting to the outside a selected from classified character group character as determined character. The key input means may output character type selection information, and the character processing means may select the character type of the character to be output when the character type selection from the key input means is input.

  A display unit that displays information such as input characters, and a transparent panel that is placed so as to overlap the display unit. The information displayed on the screen of the display unit is transmitted and pressed to be displayed. A touch panel that can select desired information from the information displayed on the screen, a key input unit having a control key and a data key, and processing key input information from the key input unit to input character type information and character input instructions. A key control unit that outputs as a signal, a display control unit that controls display content on the display unit using an X-axis screen control signal and a Y-axis screen control signal, an X-coordinate identification signal and a Y-coordinate identification signal from the touch panel, Generates a key input signal based on the information of the character display position signal received in advance and outputs it as a panel input signal, and a character type switching signal based on the character type information from the key control unit The input control unit that outputs the representative character group output signal in response to the character input instruction from the key control unit, generates and outputs the input character information by the panel input signal from the panel control unit, and the character type from the input control unit The character type of the character to be output is set based on the character type information input by the switching signal, and the representative character group is output to the display control unit as the screen display signal and the panel control is performed as the character display position signal by the representative character group output signal from the input control unit. If the input character information from the input control unit is a character of the representative character group, the segmented character group is output to the display control unit as a screen display signal and the panel control unit 22 as a character display position signal, If the input character information from the input control unit is a character of a segmented character group, the representative character group is displayed as a screen display signal on the display control unit, and the character display position signal is displayed on the panel. And output to the control unit may comprise a character processing unit for outputting to the outside a fixed character simultaneously.

  In the second aspect, a display unit that can display character groups in a predetermined arrangement, a touch panel that is disposed on the display unit so that the display of the display unit can be seen through, and outputs position information of a pressed position; From the touch panel, a key input unit that can output character type selection, character input operation start information, and characters representative of each segmented character group when a plurality of characters to be input are divided into a plurality of segmented character groups After the character input operation start information is input from the key input means, the panel control means for recognizing and outputting the character selected by the position information, and the character type of the character to be output when the character type selection is input from the key input means When a character that represents a segmented character group is input, the segmented character group to which the representative character belongs is displayed on the display unit, and the character input from the panel control unit is displayed as a confirmed character externally. And a character processing means for force.

  It may have screen brightness control means for recognizing the pressed position of the touch panel and changing the brightness in the vicinity of the character corresponding to the pressed position of the display unit. The character group is arranged in a matrix on the display unit. It may be displayed, and the input character may be a kana character.

The portable terminal device of the present invention is
A character input system using the touch panel described above may be provided, and the device may be a mobile phone.

Since the present invention is configured as described above, the following effects are obtained. That is,
The first effect is that the number of input operations can be reduced as compared with the conventional method of pressing a numeric input key and selecting a plurality of characters assigned to the key. The reason for this is that, conventionally, the input character is selected by the number of times the same key is pressed. However, the representative character is selected by selecting the representative character from the representative character group that is displayed first by adopting the input method using the touch panel. This is because the grouped character group is displayed and a desired character is selected from the displayed grouped character group, so that the input character can be determined with two selections.

  The second effect is that the input character can be judged more visually / intuitively. The reason is that the representative character group and the segmented character group are displayed separately on the screen information, so that it is possible to input while confirming on the display screen the input character status that the user previously determined by the number of times of pressing. is there.

  Next, embodiments of the present invention will be described with reference to the drawings. First, the configuration and function of the character input system using the touch panel in the mobile terminal device and the mobile terminal device according to the first embodiment of the present invention will be described. FIG. 1 is a block diagram showing the configuration of the mobile terminal device according to the first embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of a character input system using a touch panel in the mobile terminal device of FIG. FIG. 3 is a block diagram showing a configuration and functions of a character input system using a touch panel in the mobile terminal device of FIG.

  As illustrated in FIG. 1, the mobile terminal device 1 outputs a control device 10, a display unit 40 that displays output information processed by the control device 10, and position information that is superimposed and pressed on the display unit 40. The controller 10 includes a transparent touch panel 50 and a key input unit 60 having control keys and data keys. The control device 10 includes a control unit 20 and a storage unit 30.

  The control unit 20 processes the key input from the key input unit 60 and outputs it to the input control unit 23, the display control unit 21 for controlling the output to the display unit 40, and the input from the touch panel. The panel control unit 22 to be controlled, the input control unit 23 that processes input from the panel control unit 22 and the key control unit 25, and the character display control signal 241 to the display control unit 21 in response to the output from the input control unit 23 The character processing unit 24 outputs the character display position signal 242 to the panel control unit 22 and outputs the confirmed character input to the sentence assembling unit 26, and the character string input in response to the confirmed character input is stored in the storage unit 30. The kana-kanji conversion dictionary 36 and a sentence assembly unit 26 for inputting the converted kanji.

  In the present invention, in the character input for creating a sentence in the mobile terminal device 1, the touch panel 50 is mounted on the screen of the display unit 40, so that a plurality of numeric input buttons of the key input unit 60 of the mobile terminal device 1 are conventionally provided. There is provided a character input system 5 that realizes a character input operation that has been performed by pressing the button once and fewer times and more visually. Here, the target characters are divided into a plurality of character groups, the characters representing each character group are defined as representative characters, and the characters constituting each character group are defined as segmented characters including representative characters. I will explain. First, one representative character is selected from a plurality of representative character groups by the touch panel 50, and then a desired character is selected by the touch panel 50 from the divided character group to which the selected representative character belongs. Can be confirmed.

  2 and 3, the basic configuration of the character input system 5 using the touch panel 50 includes a display control unit 21, a panel control unit 22, an input control unit 23, a character processing unit 24, a key control unit 25, a display. The unit 40, the touch panel 50, and the key input unit 60 are configured. Details of each component will be described below.

  Display control unit 21: The display control unit 21 has a function of controlling display contents on the display unit 40 by an X-axis screen control signal 211 and a Y-axis screen control signal 212.

  Panel control unit 22: Input from the key control unit 25 by keying in the key input unit 60 based on the X coordinate identification signal 501 and Y coordinate identification signal 502 from the touch panel 50 and the character display position signal 242 received from the character processing unit 24. The same key input signal as that in the case of the input is output to the input control unit 23 as the panel input signal 221.

  Input control unit 23: Character type switching signal 231 from the character type information of the key control unit 25, representative character group output signal 232 from the character input instruction of the key control unit 25, and input character information from the panel input signal 221 of the panel control unit 22 234 is generated and transmitted to the character processing unit 24. In addition, when character processing is activated, it also has a function of transmitting a panel input switching signal 233 to the panel control unit 22.

  Character processing unit 24: has a function of performing display character group and character reading position conversion processing, and accompanying screen control. Based on the character type information input by the character type switching signal 231 from the input control unit 23, the character matrix composed of the representative character group is displayed on the display control unit 21 as the screen display signal 241 by the representative character group output signal 232, and the character display position signal 242 is displayed. As an example, the character selected on the touch panel 50 that is input as the input character information 234 is represented by the update notification of the character group displayed on the screen of the display unit 40 and the update notification of the character reading position. If it is a character of the character group, a character matrix composed of the divided character group is transmitted as the screen display signal 241 to the display control unit 21 and as the character display position signal 242 to the panel control unit 22 and displayed on the screen of the display unit 40. An update notification of the character group and an update notification of the character reading position are made, and the touch panel 50 If the selected character is classified character group character that character as confirmation input, performs the same process as was done with respect to confirmation input character inputted from the conventional key input unit 60.

  Here, the character type information includes kana characters, alphabets, hiragana, katakana, uppercase letters, lowercase letters, etc., and is selected and input by the key input unit 60 in the same manner as the character input using the conventional keys, and the next change input is made. Will continue until. Alternatively, it may be displayed in a blank portion of the matrix in the character display area of the display unit 40 and selected by pressing the touch panel 50. In addition, the representative character group is a character on the first line of a normal kana 50 syllable in the case of a kana, and is the first character assigned to a numeric key in the case of an alphabet, but is not limited thereto. Any character can be used as long as it is a representative character of the group character group to be displayed next. The group character group is a character assigned to each character including a representative character. In the case of Kana, it is a character in a line including the selected representative character of the normal Kana 50 syllable. In the case of an alphabet, the selected alphabet is assigned. The character assigned to the assigned numeric key.

  Key control unit 25: has a function of processing key input information from the key input unit 60 and transmitting character type information and a character input instruction to the input control unit 23 as a key input signal 251.

  Display unit 40: has a function of displaying information such as input characters and converted characters. In the case of a display unit that does not emit light autonomously, a light emitting unit such as a backlight is also included.

  Touch panel 50: a transparent panel that is arranged to overlap the display unit 40, transmits information displayed on the screen of the display unit 40, and is displayed on the display unit 40 by pressing from the touch panel 50. The desired information can be selected.

  With the above configuration, since the touch panel function is implemented in the mobile terminal device, more simple and visual character input is realized.

  Next, a character input operation by the character input system using the touch panel according to the first embodiment of the present invention will be described. FIG. 4 is a flowchart of a character input operation by the character input system using the touch panel according to the first embodiment of the present invention, and FIG. 5 is a schematic diagram showing a state in which a representative character group is displayed on the display unit by a key input signal. FIG. 6 is a schematic diagram showing a state where the representative character selected by the panel control unit by pressing the touch panel is identified, and FIG. 7 is a schematic diagram showing a state where the identified representative character is output to the input control unit. FIG. 8 is a schematic diagram showing a state in which the selected representative character is output from the input control unit to the character processing unit, and FIG. 9 is a divided character corresponding to the representative character selected by inputting the selected representative character. It is a schematic diagram which shows the state which displayed the group on the display part. Here, hiragana input will be described as an example of input characters, but the same applies to katakana and alphabets.

  When the process is started, the key control unit 25 waits for key input (step S11N), there is a key input (step S11Y), and if it is not a character type designation key, the process proceeds to step S14 (step S12N). If there is (step S12Y), the input signal 251 specifying the key character type is input to the input control unit 23, the input control unit 23 outputs the character type switching signal 231 to the character processing unit 24, and the character processing unit 24 is displayed on the display unit 40. The designated character type is selected as the character to be displayed, and the process proceeds to step S14 (step S13). If the input is from a predetermined character input start key, the process proceeds to step S15 (step S14Y). Returning to step S14, the key input is waited for (step S14N).

  In step S15, the input control unit 23 outputs a representative character group output signal 232 to the character processing unit 24, transmits a panel input switching signal 233 to the panel control unit 22, and the character processing unit 24 designates the display control unit 21. The image display signal 241 of a predetermined representative character group with the character type of the character is output, and the character display position signal 242 is output to the panel control unit 22, and the display control unit 21 outputs the X-axis image control signal 211 and the Y-axis image control signal. A predetermined representative character group is displayed on the display unit 40 with the designated character type. FIG. 5 is a block diagram showing the flow so far, and the preparation for input from the touch panel 50 is completed by the processing so far.

  Subsequent character input is performed according to the procedure of steps S16 to S21. The panel control unit 22 waits for input from the touch panel 50 (step S16N). When the touch panel 50 is pressed, an X coordinate identification signal 501 and a Y coordinate identification signal 502 are transmitted to the panel control unit 22 (step S16Y), and the panel The control unit 22 identifies the selected representative character based on these signals and the character display position information input as the character display position signal 242 from the character processing unit 24, and proceeds to step S18 (step S17). FIG. 6 is a block diagram showing the flow so far.

  In step S18, the panel control unit 22 emulates the identified representative character as a signal when the key is input from the key, and transmits it to the input control unit 23 as a panel input signal 221 (FIG. 7). The input control unit 23 performs panel input. The character information obtained from the signal 221 is transmitted as input character information 234 to the character processing unit 24 (FIG. 8), and the character processing unit 24 receives the input character information 234 to confirm that the representative character has been input. The image display signal 241 of the divided character group corresponding to the representative character is output to the display control unit 21 and the character display position signal 242 is output to the panel control unit 22, and the display control unit 21 outputs the X-axis image control signal. A predetermined segmented character group with a designated character type is displayed on the display unit 40 by the 211 and the Y-axis image control signal 212 (step S18). FIG. 9 is a block diagram showing the flow so far.

  The panel control unit 22 waits for input from the touch panel 50 (step S19N), and when the touch panel 50 is pressed, an X coordinate identification signal 501 and a Y coordinate identification signal 502 are transmitted to the panel control unit 22 (step S19Y). The control unit 22 identifies the selected segmented character based on these signals and the character display position information input as the character display position signal 242 from the character processing unit 24, and proceeds to step S21 (step S20).

  In step S <b> 21, the panel control unit 22 emulates the identified segment character as a signal when input from the key, and transmits it as a panel input signal 221 to the input control unit 23. The input control unit 23 obtains from the panel input signal 221. Character information to be transmitted to the character processing unit 24 as input character information 234, and the character processing unit 24 determines that a segmented character has been input by receiving the input character information 234, and has entered a character confirmation key. As in the case, the segmented characters are output to the text assembling unit 26, and the text is created as in the conventional example (step S21). If the processing is not completed, the process returns to step S15 and the display unit 40 displays the representative characters. The group is displayed and the steps are repeated (step S22N). If the process is completed (step S22Y), the process is terminated. Although the above has described the kana character input, the alphabet can be input in the same manner.

  Next, a character input operation of the character input system using the touch panel according to the second embodiment of the present invention will be described with reference to FIG. 9 of the first embodiment. In the first embodiment, kana characters assigned to ten numeric keys as shown in FIG. 11 or the first letters of the alphabet are displayed on the display unit as representative character groups, and are selected by a touch panel. Although all kana characters assigned to the same numeric key corresponding to the selected representative character are displayed as a grouped character group as shown in FIG. 9 and set as a confirmed character by selection from the touch panel 50, the second implementation In this form, selection from the representative character group is performed by pressing a character input key to which the representative character is assigned.

  In FIG. 9, when a key input signal to which a representative character is assigned from the key control unit 25 is input to the input control unit 23 as the key input signal 251, the input from the panel control unit 22 in the first embodiment. It is processed in the same manner as the panel input signal 221, and is output to the character processing unit 24 as input character information 234. The character processing unit 24 determines that a representative character has been input by receiving the input character information 234, The image display signal 241 of the divided character group corresponding to the representative character is output to the display control unit 21 and the character display position signal 242 is output to the panel control unit 22. The display control unit 21 outputs the X-axis image control signal 211 and the Y-axis image control signal 211. In accordance with the axis image control signal 212, a predetermined segment character group with a designated character type is displayed on the display unit 40. Since the steps after the selection of the segmented characters by the touch panel 50 are the same as those after the step S18 of the first embodiment, the description thereof is omitted. That is, when a numeric key is pressed, all characters assigned to the numeric key are displayed on the display unit 40, and the character is confirmed by pressing the touch panel 50.

  Next, a character input operation of the character input system using the touch panel according to the third embodiment of the present invention will be described with reference to FIG. FIG. 10 is a block diagram showing a configuration and functions of a third embodiment of a character input system using a touch panel in the mobile terminal device of FIG. The third embodiment shown in FIG. 10 is the same as the first embodiment except that the display brightness of the character portion of the display unit 40 selected on the touch panel 50 is changed. The same reference numerals as those of the first embodiment are used to omit the description.

  In the third embodiment, the panel selection region 51 selected on the touch panel 50 in the states of FIGS. 6 and 9 is fed back from the panel control unit 22 to the display control unit 21, so that the panel selection region of the display unit 40 is displayed. By changing the luminance of the screen corresponding to 51 as the display unit luminance change area 41, it is easier to understand whether or not the mobile terminal device 1 has correctly determined the user's input. It is also possible to use sound or the like instead of the luminance change. Alternatively, a display unit that does not hinder visual recognition when the panel is pressed may be provided, and the luminance may be changed or the display may be changed.

  The character input system portable terminal device using the touch panel described above is mainly intended for mobile phones with a large demand for miniaturization, but is not limited to this. Display screens such as PHS and PDA It can be widely applied to electronic devices having a small number of keys for character input.

It is a block block diagram which shows the structure of the portable terminal device of the 1st Embodiment of this invention. It is a block block diagram which shows the structure of the character input system using the touch panel in the portable terminal device of FIG. It is a block block diagram which shows the structure and function of a character input system using the touch panel in the portable terminal device of FIG. It is a flowchart of the character input operation | movement by the character input system using the touch panel of the 1st Embodiment of this invention. It is a schematic diagram which shows the state which displayed the representative character group on the display part by the key input signal. It is a schematic diagram which shows the state which identified the representative character with which the panel control part was selected by the press of a touch panel. It is a schematic diagram which shows the state which output the identified representative character to the input control part. It is a schematic diagram which shows the state which selected the representative character was output from the input control part to the character processing part. It is the schematic diagram which shows the state which displayed the division character group corresponding to the representative character selected by the input of the selected representative character on the display part, and is quoted also in 2nd Embodiment. It is a block block diagram which shows the structure and function of 3rd Embodiment of the character input system using the touch panel in the portable terminal device of FIG. It is a typical external view which shows an example of the mobile phone of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile terminal device 5 Character input system 10 Control apparatus 20 Control part 21 Display control part 22 Panel control part 23 Input control part 24 Character processing part 25 Key control part 26 Text assembly part 30 Storage part 36 Kana / Kanji conversion dictionary 40 Display part 41 Display brightness change area 50 Touch panel 51 Panel selection area 60 Key input section 211 X-axis screen control signal 212 Y-axis screen control signal 221 Panel input signal 231 Character type switching signal 232 Representative character group output signal 233 Panel input switching signal 234 Input character information 241 Image display signal 242 Character display position signal 251 Key input signal 501 X coordinate identification signal 502 Y coordinate identification signal 600 Cellular phone 611 Upper housing 612 Lower housing 620 Key input unit 621 Numeric keypad 622 Four-way key or jog dial 623 Control key 60 image display unit S11~S22 step

Claims (9)

A display unit capable of displaying a character group in a predetermined arrangement;
A touch panel that is arranged on the display unit so that the display of the display unit can be seen through, and outputs position information of a pressed position;
Key input means that can output character input operation start information;
Panel control means for recognizing and outputting a character selected by position information from the touch panel;
Character input operation according to preset criteria to divide a plurality of characters to be input into a plurality of segmented character groups and to form a representative character group with the characters representing each segmented character group as representative characters When the start information is input, the representative character group is displayed on the display unit, and when the character input from the panel control unit is determined to be a representative character selected from the representative character group, the classification to which the representative character belongs When the character group is displayed on the display unit and the character input from the panel control unit is determined to be a character selected from the segmented character group, the representative character group is displayed on the display unit, and the segmented character group A character input system using a touch panel, comprising: character processing means for outputting a character selected from the above as a confirmed character.   2. The character input system using a touch panel according to claim 1, wherein the key input unit can output character type selection information, and the character processing unit selects a character type of an output character when a character type selection from the key input unit is input. . A display unit that displays information such as entered characters;
It is a transparent panel and is arranged so as to overlap the display unit, transmits information displayed on the screen of the display unit, and receives desired information from the information displayed on the display unit by being pressed. Touch panel that can be selected,
A key input unit having a control key and a data key;
A key control unit that processes key input information from the key input unit and outputs character type information and a character input instruction as a key input signal;
A display control unit that controls display content on the display unit by an X-axis screen control signal and a Y-axis screen control signal;
A panel control unit that generates a key input signal based on the information of the X coordinate identification signal and the Y coordinate identification signal from the touch panel and the character display position signal received in advance, and outputs it as a panel input signal;
A character type switching signal is output according to character type information from the key control unit, a representative character group output signal is output according to the character input instruction from the key control unit, and input character information is output according to the panel input signal from the panel control unit. An input control unit for generating and outputting
Set the character type of the character to be output based on the character type information input by the character type switching signal from the input control unit, divide a plurality of characters to be input into a plurality of divided character groups, each divided character group The representative character group is displayed on the display control unit as a screen display signal by the representative character group output signal from the input control unit in accordance with a standard set in advance so that the representative character group is configured with the character representing the character as the representative character. The character display position signal is output to the panel control unit, and if the input character information from the input control unit is a character of a representative character group, a segmented character group is used as a screen display signal to the display control unit. A character display position signal is output to the panel control unit, and if the input character information from the input control unit is a character of a segmented character group, a representative character group is selected. The character processing part which outputs to the said display control part as said surface display signal to the said panel control part as said character display position signal, respectively, and was simultaneously output to the exterior as a fixed character is provided. Character input system using a touch panel. A display unit capable of displaying a character group in a predetermined arrangement;
A touch panel that is arranged on the display unit so that the display of the display unit can be seen through, and outputs position information of a pressed position;
Key input means capable of outputting character type selection, character input operation start information, and characters representing each segmented character group when a plurality of characters to be input are divided into a plurality of segmented character groups,
Panel control means for recognizing and outputting a character selected by position information from the touch panel;
When a character type selection is input from the key input unit, a character type of a character to be output is selected, and when a character representing the segmented character group is input after the character input operation start information is input from the key input unit, the representative character A character input system using a touch panel, comprising: character processing means for displaying the divided character group belonging to the display unit and outputting the character input from the panel control unit as a confirmed character to the outside.   5. The apparatus according to claim 1, further comprising a screen brightness control unit that recognizes a pressed position of the touch panel and changes a brightness near a character corresponding to the pressed position of the display unit. Character input system using the touch panel described in 1.   The character input system using the touch panel according to claim 1, wherein the character group is displayed in a matrix on the display unit.   The character input system using the touch panel according to any one of claims 1 to 6, wherein the input character is a kana character.   The portable terminal device provided with the character input system using the touch panel of any one of Claims 1-7.   The mobile terminal device according to claim 8, wherein the device is a mobile phone.

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