JP2014023080A - Portable terminal device, program and input correction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal device that conveniently implements a shortened operation time required to correct a character.SOLUTION: A mobile phone 1 includes a control section 11 for displaying an operation section for character input (hiragana keyboard 111, predictive conversion window 411) on a display screen 3, and displaying a character depending on a touch operation on the operation section on the display screen 3. The operation section includes a delete key 113. When a touch operation is made on the delete key 113, the control section 11 displays characters 512, 522 as corrective candidates on the display screen 3 such that correspondences of the corrective candidate characters 512, 522 to directions of a flick operation from the delete key 113 can be recognized, and in response to a flick operation from the position of the delete key 113, 123, replaces the character to be deleted with the corrective candidate character 512, 522 corresponding to the direction of the flick operation.

Description

  The present invention relates to a mobile terminal device such as a mobile phone, a PDA (Personal Digital Assistant), a tablet PC (Tablet PC), and an electronic book terminal. The present invention also relates to a program suitable for use in such a portable terminal device and an input correction method.

  Conventionally, a portable terminal device provided with a touch panel is known. In such a portable terminal device, a keyboard is displayed on the touch panel. The user can input a character by pressing (touching) a character input key provided on the keyboard (see, for example, Patent Document 1).

  A delete key is provided on the keyboard. When correcting the input character, the user erases the erroneous character using the delete key and then inputs the correct character using the character input key.

JP 2010-263433 A

  When correcting characters as described above, if the correction operation can be performed in a shorter time, the user can create a document such as an e-mail in a shorter time. Convenient for the user.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a mobile terminal device, a program, and an input correction method that can shorten the operation time required for character correction and are excellent in operability.

  The portable terminal device according to the first aspect of the present invention displays a display surface, a reception unit that receives a touch operation on the display surface, and an operation unit for character input on the display surface, and the reception unit A display control unit that displays on the display surface characters corresponding to the accepted touch operation on the operation unit. Here, the operation unit includes a delete key for deleting a character displayed on the display surface. Further, when the touch operation on the delete key is accepted by the accepting unit, the display control unit displays the correction candidate character and the movement direction of the touch position from the delete key in the touch operation involving the movement of the touch position. A touch operation involving movement of the touch position from the delete key is displayed on the display surface in a manner in which the correspondence with the correction candidate character can be recognized, and the correction candidate character is displayed on the display surface. When received by the receiving unit, the character to be deleted is replaced with the correction candidate character corresponding to the touch operation.

  In the mobile terminal device according to this aspect, the operation unit may be configured to include a character input key corresponding to each character. In this case, the display control unit displays the correction candidate character corresponding to the character input by the character input key before the touch operation on the delete key on the display surface.

In the case of such a configuration, the display control unit further sets, as the correction candidate character, a character that can be easily replaced with the character to be deleted when an error in touch operation on the character input key occurs. , It can be configured to display on the display surface.

  In addition, the display control unit may use, as the correction candidate character, a character corresponding to another character input key adjacent to the character input key that has been touched immediately before the touch operation on the delete key, as the correction candidate character. It can be set as the structure displayed on.

  Furthermore, when the character input immediately before the touch operation on the delete key is determined according to the number of touch operations continuously performed on the predetermined character input key, the display control unit The character corresponding to the number of times may be displayed on the display surface as the correction candidate character.

  Further, the display control unit may select one of a plurality of input candidates that can be selected when a character input immediately before the touch operation on the delete key is touched on a predetermined character input key. In such a case, the input candidate character may be displayed on the display surface as the correction candidate character.

  In the mobile terminal device according to this aspect, the operation unit is arranged for selecting candidate characters to be converted from the input characters and selecting candidates to be applied to the input characters from the arranged candidates. The configuration may include a selection unit. In this case, the display control unit displays the correction candidate characters corresponding to the candidate selected from the selection unit on the display surface before the touch operation on the delete key.

  In such a configuration, the display control unit further displays, on the display surface, a candidate adjacent to the candidate selected from the selection unit in the selection unit as the correction candidate character.

  In the mobile terminal device according to this aspect, the display control unit is configured to display the correction candidate characters on the display surface in a manner in which the correction candidate characters are arranged around the deletion key. obtain.

  In the mobile terminal device according to this aspect, when the touch operation with the movement of the touch position is accepted by the accepting unit from a state where the delete key is touched, the display control unit displays the character to be deleted, If the release operation from the delete key is accepted by the accepting unit before the touch operation with the movement of the touch position is performed, the character is deleted when it is replaced with the correction candidate character corresponding to the touch operation. The power character may be deleted from the display surface.

  A program according to a second aspect of the present invention provides a computer of a mobile terminal device that displays an operation unit for character input on a display surface and displays characters on the display surface according to a touch operation on the operation unit. When a touch operation is performed on the delete key included in the operation unit in order to delete the character displayed on the display surface, the correction candidate character is moved from the delete key in the touch operation involving the movement of the touch position. A function of displaying on the display surface in a manner in which the correspondence between the movement direction of the touch position and the correction candidate character can be recognized, and the position of the deletion key after the correction candidate character is displayed on the display surface When a touch operation involving the movement of the touch position from is performed, a function of replacing a character to be deleted with the correction candidate character corresponding to the touch operation is added. To.

A third aspect of the present invention relates to an input correction method for correcting a character input by a touch operation on an operation unit displayed on a display surface and displayed on the display surface. In the input correction method according to this aspect, when a touch operation is performed on the delete key included in the operation unit to delete the character displayed on the display surface, the correction candidate character is moved to the touch position. A step of displaying on the display surface in a manner in which the correspondence between the moving direction of the touch position from the delete key in the accompanying touch operation and the correction candidate character can be recognized, and the correction candidate character is displayed on the display surface. Then, when a touch operation involving the movement of the touch position from the position of the delete key is performed, a character to be deleted is replaced with the correction candidate character corresponding to the touch operation. .

  According to the present invention, it is possible to provide a mobile terminal device, a program, and an input correction method that can shorten the operation time required for character correction and have excellent operability.

  The effects and significance of the present invention will become more apparent from the following description of embodiments. However, the following embodiment is merely an example when the present invention is implemented, and the present invention is not limited to what is described in the following embodiment.

It is a figure which shows the structure of the mobile telephone based on embodiment. It is a block diagram which shows the whole structure of the mobile telephone based on Embodiment. It is a figure which shows the state by which the document input screen containing a keyboard based on embodiment was displayed on the display surface. It is a figure for demonstrating the character input based on embodiment. It is a flowchart which shows the process sequence of the character correction process based on Embodiment. It is a figure which shows the correction candidate image displayed on a display surface when the delete key based on embodiment is touched. It is a figure which shows the specific example in case the character input by flick mode is corrected using the hiragana keyboard based on embodiment. It is a figure which shows the specific example in case the character input by continuous tap mode is corrected using the hiragana keyboard based on embodiment. It is a figure which shows the specific example in case the character input using the QWERTY keyboard based on embodiment is corrected. It is a figure which shows the specific example in case the character converted by selection operation with respect to the prediction conversion window based on embodiment is corrected. It is a figure for demonstrating the correction candidate image based on the example of a change. It is a figure for demonstrating the correction candidate image based on the example of a change.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of the mobile phone 1. FIGS. 1A and 1B are a front view and a rear view of the mobile phone 1, respectively.

  Hereinafter, for convenience of explanation, as shown in FIG. 1, the longitudinal direction of the cabinet 2 is defined as the up-down direction, and the short direction of the cabinet 2 is defined as the left-right direction.

  The mobile phone 1 includes a cabinet 2, a display surface 3, a microphone 4, a call speaker 5, a key operation unit 6, and an external speaker 7.

The cabinet 2 has a substantially rectangular shape when viewed from the front. A display surface 3 of a display unit 13 to be described later is arranged on the front surface of the cabinet 2. Various images (screens) are displayed on the display surface 3.

  Inside the cabinet 2, a microphone 4 is disposed at the lower end, and a call speaker 5 is disposed at the upper end. Audio is input to the microphone 4 through a microphone hole 4 a formed in the front of the cabinet 2. The microphone 4 generates an electrical signal corresponding to the input sound. Voice is output from the call speaker 5. The output sound is emitted to the outside through an output hole 5a formed in the front of the cabinet 2.

  A key operation unit 6 is provided on the front surface of the cabinet 2. The key operation unit 6 includes a plurality of operation keys. Each operation key is assigned various functions for operating the program being executed.

  An external speaker 7 is disposed inside the cabinet 2. An output hole 7 a corresponding to the external speaker 7 is formed on the back surface of the cabinet 2. Sound (sound, notification sound, etc.) output from the external speaker 7 is emitted to the outside through the output hole 7a.

  FIG. 2 is a block diagram showing the overall configuration of the mobile phone 1. The mobile phone 1 includes a control unit 11, a storage unit 12, a display unit 13, a touch detection unit 14, a voice input unit 15, a voice output unit 16, a voice processing unit 17, a key input unit 18, And a communication unit 19.

  The storage unit 12 includes a ROM, a RAM, an external memory, and the like. The storage unit 12 stores various programs. The program stored in the storage unit 12 includes various applications (for example, telephone, e-mail, map, game, schedule management, etc.) in addition to a control program for controlling each unit of the mobile phone 1. The program is stored in the storage unit 12 by the manufacturer when the mobile phone 1 is manufactured, and is also stored in the storage unit 12 by the user via a communication network or a storage medium.

  The storage unit 12 also includes a working area that stores data that is temporarily used or generated when the program is executed.

  The control unit 11 includes a CPU and the like. In accordance with the program, the control unit 11 is configured according to each program (storage unit 12, display unit 13, touch detection unit 14, voice input unit 15, voice output unit 16, voice processing unit 17, key input unit 18, communication unit, communication). Part 19 etc.).

  The display unit 13 includes a liquid crystal display or the like. The display unit 13 displays an image (screen) on the display surface 3 based on the control signal and the image signal from the control unit 11. The display unit 13 is not limited to a liquid crystal display, and may be composed of other display devices such as an organic EL display.

  The touch detection unit 14 includes a touch panel that detects contact of a finger with the display surface 3. The touch panel is formed in a transparent sheet shape, covers the display surface 3, and is disposed in front of the cabinet 2. The touch panel may be a touch panel of various types such as a capacitance type, an ultrasonic type, a pressure sensitive type, a resistance film type, and a light detection type.

  The touch detection unit 14 receives a touch operation by the user on the display surface 3. That is, the touch detection unit 14 detects a position on the display surface 3 touched by the finger as a touch position, and outputs a position signal corresponding to the detected touch position to the control unit 11.

The user can perform various touch operations by touching the display surface 3 with a finger. Examples of the touch operation include a tap operation, a flick operation, and a slide operation. The tap operation is an operation in which a finger is brought into contact with the display surface 3 and then released within a short time. The flick operation is an operation of flipping the display surface 3 with a finger in an arbitrary direction. The slide operation is an operation for moving the display screen 3 in an arbitrary direction while keeping a finger in contact with the display surface 3. The flick operation and the slide operation are touch operations that involve movement of the touch position.

  The touch operation will be described more specifically. For example, when the touch position is not detected within a predetermined first time after the touch position on the display surface 3 is detected by the touch detection unit 14, it is determined that the tap operation has been performed by the control unit 11. When the touch position is not detected after the touch position on the display surface 3 is detected by the touch detection unit 14 and the touch position is moved beyond the predetermined first distance within the predetermined second time, the control unit 11 It is determined that a flick operation has been performed. After the touch position on the display surface 3 is detected by the touch detection unit 14, when the touch position moves by a predetermined second distance or more, the control unit 11 determines that a slide operation has been performed.

  The voice input unit 15 includes a microphone 4 and the like. The voice input unit 15 outputs an electrical signal from the microphone 4 to the voice processing unit 17.

  The audio output unit 16 includes a call speaker 5, an external speaker 7, and the like. The sound output unit 16 receives an electrical signal from the sound processing unit 17 and outputs sound (sound, notification sound, etc.) from the call speaker 5 or the external speaker 7.

  The audio processing unit 17 performs A / D conversion or the like on the electrical signal from the audio input unit 15 and outputs the converted digital audio signal to the control unit 11. The audio processing unit 17 performs decoding processing, D / A conversion, and the like on the digital audio signal from the control unit 11, and outputs the converted electric signal to the audio output unit 16.

  The key input unit 18 outputs a signal corresponding to the pressed operation key to the control unit 11 when each operation key of the key operation unit 6 is pressed.

  The communication unit 19 includes a circuit for converting a signal, an antenna for transmitting and receiving radio waves, and the like for performing communication and communication. The communication unit 19 converts a call or communication signal input from the control unit 11 into a radio signal, and transmits the converted radio signal to a communication destination such as a base station or another communication device via an antenna. To do. Further, the communication unit 19 converts the radio signal received via the antenna into a signal in a format that can be processed by the control unit 11, and outputs the converted signal to the control unit 11.

  In the mobile phone 1, a keyboard is arranged on a screen for inputting characters (hereinafter referred to as a “character input screen”), such as an e-mail text creation screen. The user can input a desired document by operating the keyboard. In addition, the user can select a keyboard corresponding to the input format from a plurality of keyboards such as a hiragana keyboard and a QWERTY keyboard and place it on the character input screen.

  FIG. 3 is a diagram illustrating a state in which a document input screen including the keyboards 111 and 121 is displayed on the display surface 3.

  FIG. 3A shows a document input screen including the hiragana keyboard 111. The hiragana keyboard 111 is composed of a character input key 112 for inputting hiragana, a delete key 113 for deleting characters, and other various keys relating to document creation.

FIG. 3B shows a document input screen including the QWERTY keyboard 121. The QWERTY keyboard 121 is composed of a character input key 122 for inputting alphabets, a delete key 123 for deleting characters, and other various keys related to document creation.

  Characters input by touch operations on the keyboards 111 and 121 are displayed in the display area 211.

  When hiragana is input using the hiragana keyboard 111, characters corresponding to the number of tap operations (number of taps) for the character input key 112 corresponding to each row are continuously input as a mode for inputting characters in each row of each row. A tap mode and a flick mode in which characters according to the direction of the flick operation following the touch on the character input key 112 corresponding to each line are input are provided. The user can select a desired mode by a predetermined operation.

  FIG. 4 is a diagram for explaining character input. FIG. 4 shows an example of inputting characters using the hiragana keyboard 111 in the flick mode.

  As illustrated in FIG. 4A, when the character input key 112 corresponding to each line is touched, the control unit 11 pops up the input candidate image 311 on the display surface 3. The input candidate image 311 is composed of a plurality of input candidate characters 312 arranged around the character input key 112. The input candidate characters 312 include characters from “I” to “O” in the row corresponding to the character input key 112 (in the case of “NA”, “NI”, “N”, “N”, “NO” )) Is assigned. When the user performs a flick operation while the input candidate image 311 is displayed, input candidate characters 312 positioned in the direction of the flick operation are input. The control unit 11 displays the input characters in the display area 211. The character input by the character input key 112 is an undetermined character, and the displayed character is underlined indicating that it is undetermined.

  Each time the character input with the character input key 112 is finished, the control unit 11 performs a predictive conversion process and pops up a predictive conversion window 411 in the display area 211 as shown in FIG. The predictive conversion window 411 includes characters (character strings) 412 that are conversion candidates, such as kanji and katakana that can be converted from the input unconfirmed characters.

  When the user performs a tap operation on one of the conversion candidate characters 412 in the prediction conversion window 411 and selects the conversion candidate character 412, the control unit 11 does not perform the operation as shown in FIG. The fixed character is replaced with the conversion candidate character 412. The converted character becomes a confirmed character, and the confirmed character displayed in the display area 211 is not underlined.

  When characters are input using the hiragana keyboard 111 in the continuous tap mode and when characters are input using the QWERTY keyboard 121, when the characters are input using the character input keys 112 and 122, the predictive conversion window 411 is displayed. It is displayed in the display area 211. By selecting one conversion candidate character 412 in the predictive conversion window 411, the unconfirmed character is converted into the conversion candidate character 412 and determined.

  When an incorrect character is input through the character input keys 112 and 122 or the predictive conversion window 411 and an incorrect character (unconfirmed character or fixed character) is displayed in the display area 211, the user uses the delete keys 113 and 123. Erroneous characters can be erased.

  Furthermore, in the present embodiment, the user can replace an incorrect character with a correct character by a flick operation following touching the delete keys 113 and 123. In order to realize such a character correction function, the control unit 11 executes a character correction process described below.

FIG. 5 is a flowchart showing the processing procedure of the character correction processing. FIG. 6 is a diagram showing correction candidate images 511 and 521 displayed on the display surface 3 when the delete key 113 is touched. The character correction process will be described with reference to FIGS.

  The control unit 11 monitors whether or not the delete keys 113 and 123 are touched while character input using the keyboards 111 and 121 is performed (S101). If the control unit 11 determines that the delete keys 113 and 123 are touched (S101: YES), the operation before the delete keys 113 and 123 are touched is a touch operation on the keyboards 111 and 121, or the prediction conversion window 411. It is determined which of the touch operations is for (S102).

  As described above, the characters input by the keyboards 111 and 121 are in an unconfirmed state, and the characters converted by the predictive conversion window 411 are in a confirmed state. For example, the control unit 11 determines an operation before the delete keys 113 and 123 are touched depending on whether the last input character is in an unconfirmed state or a confirmed state. In this case, if the last character is in an unconfirmed state, the control unit 11 determines that the previous operation is a touch operation on the keyboards 111 and 121. If the last character is in a confirmed state, the previous operation is performed. It is determined that the operation is a touch operation on the prediction conversion window 411.

  When the control unit 11 determines that the previous operation is a touch operation on the keyboards 111 and 121 (S102: keyboard), the control unit 11 responds to the last character as shown in FIGS. 6 (a), 6 (b), and 6 (c). A correction candidate image 511 is generated and displayed in a pop-up on the display surface 3 (S103).

  The correction candidate image 511 shown in FIG. 6A is displayed on the display surface 3 when the user inputs characters in the flick mode using the hiragana keyboard 111. The correction candidate image 511 shown in FIG. 6B is displayed on the display surface 3 when the user inputs characters in the continuous tap mode using the hiragana keyboard 111. A correction candidate image 511 shown in FIG. 6C is displayed on the display surface 3 when the user inputs characters using the QWERTY keyboard 121.

  The correction candidate image 511 includes a plurality of correction candidate characters 512 arranged around the delete keys 113 and 123. In the present embodiment, since delete keys 113 and 123 are arranged at the right end of display surface 3, correction candidate characters 512 are arranged above, below and to the left of delete keys 113 and 123.

  In the case of the correction candidate image 511 (Hiragana keyboard 111, flick mode) in FIG. 6A, the characters “A” to “O” in the same row as the last character are assigned to the correction candidate character 512. . For example, when the last character is “ni”, the characters “na”, “ni”, “nu”, “ne”, and “no” are assigned to the correction candidate character 512.

  In the case of the correction candidate image 511 in FIG. 6B (Hiragana keyboard 111, continuous tap mode), the correction candidate character 512 is the character immediately before and after the last character on the same line as the last character. In addition, the character input with the same number of taps as the last character in the character input key 112 adjacent to the character input key 112 of the last character is assigned. For example, when the last character is “Nu”, the correction candidate characters 512 include the characters “Ni” and “Ne” that are immediately before and after “Nu”, and “N”. In the character input key 112 adjacent to the character input key 112 of the line, the character “ku” having the same number of taps as “nu” in the character input key 112 of the “ka” line, “ta” line, “ya” line, and “ha” line, The letters “tsu”, “yo” and “fu” are assigned.

As the correction candidate character 512, a character adjacent to the character input key 112 of the last character may be assigned instead of the character input with the same number of taps as the last character. For example, when the last character is “nu”, the characters “ni”, “ne”, “ka”, “ta”, “ya”, and “ha” may be assigned.

  In the case of the correction candidate image 511 (QWERTY keyboard 121) of FIG. 6C, the character of the character input key 122 adjacent to the character input key 122 of the last character is assigned to the character 512 of the correction candidate. For example, when the last character is “f”, the characters “r”, “g”, “d”, “x”, and “c” are assigned to the correction candidate character 512.

  The correction candidate character 512 is a character that can be easily replaced with the last character, that is, the character to be deleted, when a touch operation error on the character input keys 112 and 122 occurs, and can be replaced by correction. It is a highly character.

  As shown in FIGS. 6A, 6 </ b> B, and 6 </ b> C, the direction of each correction candidate character 512 from the delete keys 113 and 123 is a flick operation for selecting the correction candidate character 512. Direction (see arrows in the figure).

  On the other hand, in the process of step S102, when the control unit 11 determines that the previous operation is a touch operation on the prediction conversion window 411 (S102: prediction conversion window), the layout of the prediction conversion window 411, that is, the prediction conversion window 411. The conversion candidate character 412 and the arrangement order of these conversion candidate characters 412 are acquired from the storage unit 12 (S104). The layout of the prediction window 411 is stored in the storage unit 12 by the control unit 11 when the prediction conversion window 411 is displayed in the display area 211. Each time the content of the prediction conversion window 411 is updated and the layout is changed, a new layout is stored in the storage unit 12.

  The control unit 11 refers to the acquired layout, and generates a correction candidate image 521 corresponding to the conversion candidate character 412 selected before the operation to the delete keys 113 and 123, as shown in FIG. Then, a pop-up is displayed on the display surface 3 (S105).

  Similar to the correction candidate image 511, the correction candidate image 521 includes a plurality of correction candidate characters 522 arranged around the delete keys 113 and 123.

  The correction candidate character 522 is assigned the conversion candidate character 412 adjacent to the selected conversion candidate character 412 on the predictive conversion window 411. For example, as shown in FIG. 4B, when the conversion candidate characters 412 are arranged in a horizontal row in the predictive conversion window 411, the right and left adjacent conversion candidate characters 412 are the correction candidate characters. Assigned to character 522.

  Any of the correction candidate characters 512 is a character that can be easily replaced with the selected conversion candidate character 412, that is, the character to be deleted, when a touch operation error on the prediction conversion window 411 occurs. Characters that are likely to be replaced.

  As shown in FIG. 6D, the direction of each correction candidate character 522 from the delete keys 113 and 123 is the direction of the flick operation for selecting the correction candidate character 522 (see the arrow in the figure). Represents.

When the correction candidate image 511 or the correction candidate image 521 is displayed, the control unit 11 has a preset time limit (for example, set to a time of about 1 second to several seconds) after the delete keys 113 and 123 are touched. It is determined whether or not it has elapsed (S105). If the time limit has not elapsed (S105: NO), the controller 11 determines whether or not the user's finger has been released from the delete keys 113 and 123 (S106). Further, the control unit 11 determines whether or not a flick operation has been performed from the state where the delete keys 113 and 123 are touched (S107).

  If the control unit 11 determines that the flick operation has been performed from the state where the delete keys 113 and 123 are touched before the time limit has elapsed (S107: YES), the character to be erased displayed in the display area 211 is displayed. The last character, the character converted by the predictive conversion process, is replaced with the correction candidate characters 512 and 522 corresponding to the direction of the flick operation (S108).

  On the other hand, if the time limit elapses without the flick operation being performed (S105: YES), or if the release operation from the delete keys 113 and 123 is performed (S106: YES), the control unit 11 enters the display area 211. The displayed character to be erased is erased (S109).

  The control unit 11 deletes the correction candidate images 511 and 521 from the display surface 3 when the time limit elapses or a release operation or a flick operation is performed.

  FIG. 7 is a diagram illustrating a specific example in the case where a character input in the flick mode is corrected using the hiragana keyboard 111.

  As shown in FIG. 7A, the intention is to input the character “NO” following the character “I”, but the character “NI” was input by an incorrect flick operation on the input candidate character 312. In this case, the user touches the delete key 113 as shown in FIG.

  As shown in FIG. 7B, a correction candidate image 511 including correction candidate characters 512 of “NA”, “NI”, “NU”, “NE”, “NO” is displayed around the delete key 113. The

  As shown in FIG. 7C, the user performs a flick operation from the state in which the delete key 113 is touched in the direction of the correction candidate character 512 of “NO”. As a result, the characters “ni” displayed in the display area 211 are replaced with the characters “no”.

  If there is no character to be replaced among the displayed correction candidate characters 512, the user releases the finger from the delete key 113 without performing a flick operation, as shown in FIG. As a result, the character “ni” displayed in the display area 211 is deleted, and a cursor is displayed next to the character “I”.

  FIG. 8 is a diagram illustrating a specific example when characters input in the continuous tap mode are corrected using the hiragana keyboard 111.

  As shown in Fig. 8 (a), when you intend to enter the character "Ni" after the character "I", but accidentally tap once and enter the character "Nu" As shown in FIG. 8B, the user touches the delete key 113.

  As shown in FIG. 8B, a correction candidate image 511 including correction candidate characters 512 of “ni”, “ku”, “tsu”, “yo”, “fu”, and “ne” is a delete key 113. It is displayed around.

  As shown in FIG. 8C, the user performs a flick operation from the state in which the delete key 113 is touched in the direction of the correction candidate character 512 of “Ni”. As a result, the character “nu” displayed in the display area 211 is replaced with the character “ni”.

  As shown in FIG. 8D, when the flick operation is not performed and the finger is released from the delete key 113, the characters “Nu” displayed in the display area 211 are erased and the characters “I” are displayed. A cursor appears next to.

  FIG. 9 is a diagram illustrating a specific example in the case where characters input using the QWERTY keyboard 121 are corrected.

  As shown in FIG. 9A, the user intends to input the character “d” following the character string “abc”, but accidentally performs a tap operation on the character input key 122 adjacent to the right and returns “f”. ”Is input, the user touches the delete key 123 as shown in FIG.

  As shown in FIG. 9B, a correction candidate image 511 including correction candidate characters 512 of “r”, “g”, “d”, “x”, and “c” is displayed around the delete key 123. The

  As shown in FIG. 9C, the user performs a flick operation from the state in which the delete key 123 is touched in the direction of the correction candidate character 512 of “d”. Thereby, the character “f” displayed in the display area 211 is replaced with the character “d”.

  As shown in FIG. 9D, when the flick operation is not performed and the finger is released from the delete key 123, the character “f” displayed in the display area 211 is erased and the character “c” is displayed. A cursor appears next to.

  FIG. 10 is a diagram illustrating a specific example in the case where the character converted by the selection operation on the prediction conversion window 411 is corrected.

  As shown in FIG. 10A, the character string “I” is intended to be converted into the character “I”, but the tap operation is performed on the adjacent conversion candidate character 412 and the character “pass” is displayed. In the case of being converted to, the user touches the delete key 113 as shown in FIG.

  As illustrated in FIG. 10B, the correction candidate image 521 in which “I” and “I” characters adjacent to the left and right of the “pass” character are assigned to the correction candidate character 522 in the prediction conversion window 411. Is displayed around the delete key 113.

  As illustrated in FIG. 10C, the user performs a flick operation from the state in which the delete key 113 is touched in the direction of the correction candidate character 522 of “I”. As a result, the character “pass” displayed in the display area 211 is replaced with the character “I”.

  As shown in FIG. 10D, when the flick operation is not performed and the finger is released from the delete key 113, the character string “I” displayed in the display area 211 is deleted.

  As described above, according to the present embodiment, when the delete keys 113 and 123 are touched, the correction candidate characters 512 and 522 change the direction of the flick operation for selecting the correction candidate characters 512 and 522. When the flick operation is performed following the touch on the delete keys 113 and 123, the characters to be deleted by the delete keys 113 and 123 are displayed as correction candidate characters corresponding to the direction of the flick operation. Replaced with 512, 522. Therefore, the user can quickly correct the erroneously input character to the correct character.

  Furthermore, according to the present embodiment, the correction candidate character 512 is set according to the character that was last input (converted) before the delete key 113 was operated. For example, when a touch operation error on the character input keys 112 and 122 occurs, such as a character of the character input keys 112 and 122 adjacent to the character input keys 112 and 122 of the last character, a character that can be easily replaced with the last character. Is assigned to the correction candidate character 512. In addition, a conversion candidate character 412 that is likely to be erroneously converted when selecting a correct conversion candidate character 412 such as a conversion candidate character 412 adjacent to the conversion candidate character 412 selected in the predictive conversion window 411 is displayed. It is assigned to the correction candidate character 522.

  Therefore, characters that are likely to be replaced with the deleted characters can be displayed on the display surface 3 as the correction candidate characters 512 and 522, so that the frequency of using the character correction function can be increased.

  Furthermore, according to the present embodiment, when there is no correction candidate character 512 or 522 to be replaced, the user replaces the character by releasing the finger from the delete keys 113 and 123 without performing the flick operation. You can only delete characters without doing it.

<Others>
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications other than those described above can be made to the embodiments of the present invention. .

  For example, in the above embodiment, when the delete key 113 (123) is touched, the correction candidate image 511 (521) composed of the correction candidate characters 512 (522) arranged around the delete key 113 is displayed. Displayed on surface 3. However, the present invention is not limited thereto, and the correction candidate image 531 shown in FIG. 11 and the correction candidate image 541 shown in FIG. 12 may be displayed.

  That is, as shown in FIG. 11A, a correction candidate image 531 composed of an image 533 indicating a delete key and correction candidate characters 532 arranged around the image 533 is a delete key 113 (123. ) May be displayed at a distant position. In this case, the direction from the image 533 showing the delete key to each correction candidate character 532 is the direction of the flick operation for selecting each correction candidate character 532. As shown in FIG. 11B, when a flick operation is performed following the touch of the delete key 113 (123), the character to be deleted is replaced with a correction candidate character 532 corresponding to the direction of the flick operation. .

  Further, as shown in FIG. 12A, a correction candidate image 541 composed of an arrow 543 indicating the direction of the flick operation from the delete key 113 (123) and a correction candidate character 542 corresponding to the arrow 543 is obtained. The delete key 113 (123) may be displayed at a position distant from the delete key 113 (123). As shown in FIG. 12B, when a flick operation is performed after touching the delete key 113 (123), the character to be deleted is a correction candidate character corresponding to the direction of the flick operation (arrow 543). 542 is replaced.

  As described above, not only the correction candidate image 511 (521) of the above embodiment, but also the correction candidate character corresponding to the direction of the flick operation from the delete key (touch position movement direction) and the correction candidate character. It suffices if a correction candidate image that is displayed in a manner in which the attachment can be recognized is displayed on the display surface 3.

Furthermore, according to the above embodiment, when the flick operation is performed on the delete key 113 (123), the character to be deleted is the correction candidate character 512 (depending on the direction of the flick operation).
522). However, when a slide operation is performed instead of or in addition to the flick operation, a character to be deleted is replaced with a correction candidate character 512 (522) corresponding to the direction of the slide operation. May be.

  Furthermore, in the above embodiment, the present invention is applied to input using the hiragana keyboard 111 and the QWERTY keyboard 121. However, the present invention may be applied to input using other keyboards, for example, keyboards for inputting numbers. That is, the “character” in the present invention is not limited to the “character” in a narrow sense, but is interpreted as a “character” in a broad sense including numbers, symbols, and the like.

  Furthermore, in the above embodiment, since the delete key 113 (123) is displayed at the right end of the display surface 3, there is no display space on the right side of the delete key 113 (123), and the correction candidate character 512 is on the right side. Not arranged. However, if there are display spaces in all of the upper, lower, left and right directions of the delete key 113 (123), the correction candidate characters 512 may be arranged in all the upper, lower, left and right directions.

  Furthermore, the number of correction candidate characters 512 (522) included in the correction candidate image 511 (521) is not limited to the number shown in the above embodiment, and may be changed as appropriate.

  Further, in the above-described embodiment, a time limit is provided, and a time limit is set for the time when the flick operation is effective after the delete key 113 (123) is touched. However, the time limit is not necessarily provided.

  The present invention is not limited to a mobile phone, and can be applied to various mobile terminal devices such as a PDA (Personal Digital Assistant), a tablet PC (Tablet PC), and an electronic book terminal.

  In addition, the embodiment of the present invention can be variously modified as appropriate within the scope of the technical idea shown in the claims.

3 Display surface
11 Control unit (display control unit)
14 Touch detection unit (reception unit)
111 Hiragana keyboard (operation unit)
112 Character input key
123 Delete key (delete key)
121 QWERTY keyboard (operation unit)
121 Character input key
123 Delete key
311 Input candidate images
312 Input candidate characters
411 Prediction conversion window (operation part, selection part)
412 Conversion candidate characters (candidates)
511 Correction candidate image
512 Correction candidate characters
521 Correction candidate image
522 Candidate for correction

Claims (12)

A display surface;
A reception unit that receives a touch operation on the display surface;
A display control unit that displays an operation unit for character input on the display surface, and displays characters on the display surface according to a touch operation on the operation unit received by the reception unit;
With
The operation unit includes a delete key for deleting a character displayed on the display surface,
The display control unit
When the touch operation on the delete key is received by the receiving unit, the correction candidate character is associated with the movement direction of the touch position from the delete key in the touch operation involving the movement of the touch position and the correction candidate character. Is displayed on the display surface in a manner that can be recognized,
After the correction candidate character is displayed on the display surface, when a touch operation involving the movement of the touch position from the delete key is received by the reception unit, the character to be deleted corresponds to the touch operation. Replace with the correction candidate character
A portable terminal device. The mobile terminal device according to claim 1,
The operation unit includes a character input key corresponding to each character,
The display control unit displays the correction candidate characters according to the characters input by the character input key on the display surface before the touch operation on the delete key.
A portable terminal device. The mobile terminal device according to claim 2,
The display control unit displays, on the display surface, a character that can be easily replaced with the character to be deleted as the correction candidate character when a touch operation error on the character input key occurs.
A portable terminal device. The mobile terminal device according to claim 2,
The display control unit displays, on the display surface, a character corresponding to another character input key adjacent to the character input key that has been touched immediately before the touch operation on the delete key as the correction candidate character. To
A portable terminal device. The mobile terminal device according to claim 2,
When the character input immediately before the touch operation on the delete key is determined according to the number of touch operations performed continuously on the predetermined character input key, the display control unit determines the number of times before and after the number of times. A character corresponding to, is displayed on the display surface as the correction candidate character,
A portable terminal device. The mobile terminal device according to claim 2,
The display control unit is one of a plurality of input candidates that can be selected when a character input immediately before a touch operation on the delete key is performed on a predetermined character input key. When there is, the character of the input candidate is displayed on the display surface as the correction candidate character.
A portable terminal device. The mobile terminal device according to any one of claims 1 to 6,
The operation unit includes a selection unit for selecting candidate characters to be converted from input characters and selecting candidates to be applied to the input characters from the arranged candidates.
The display control unit displays characters of the correction candidate corresponding to the candidate selected from the selection unit on the display surface before the touch operation on the delete key.
A portable terminal device. In the portable terminal device according to claim 7,
The display control unit displays a candidate adjacent to the candidate selected from the selection unit in the selection unit on the display surface as the correction candidate character.
A portable terminal device. In the portable terminal device according to any one of claims 1 to 8,
The display control unit displays the correction candidate characters on the display surface according to a mode in which the correction candidate characters are arranged around the deletion key.
A portable terminal device. The mobile terminal device according to any one of claims 1 to 9,
The display control unit
When a touch operation involving movement of the touch position is accepted from the state where the delete key is touched, the character to be deleted is replaced with the correction candidate character corresponding to the touch operation,
When a release operation from the delete key is accepted by the accepting unit before a touch operation involving movement of the touch position is performed, the characters to be deleted are erased from the display surface.
A portable terminal device. In the computer of the mobile terminal device that displays an operation unit for character input on the display surface and displays characters on the display surface according to a touch operation on the operation unit,
When a touch operation is performed on the delete key included in the operation unit in order to delete the character displayed on the display surface, the correction candidate character is changed from the delete key in the touch operation involving the movement of the touch position. A function of displaying on the display surface in a manner in which the correspondence between the movement direction of the touch position and the correction candidate character can be recognized;
After the correction candidate character is displayed on the display surface, when a touch operation involving the movement of the touch position from the position of the deletion key is performed, the character to be deleted corresponds to the touch operation. The ability to replace with correction candidates,
A program that grants. An input correction method for correcting a character input by a touch operation on an operation unit displayed on a display surface and displayed on the display surface,
When a touch operation is performed on the delete key included in the operation unit in order to delete the character displayed on the display surface, the correction candidate character is changed from the delete key in the touch operation involving the movement of the touch position. Displaying on the display surface in a manner in which the correspondence between the moving direction of the touch position and the correction candidate character can be recognized;
After the correction candidate character is displayed on the display surface, when a touch operation involving the movement of the touch position from the position of the deletion key is performed, the character to be deleted corresponds to the touch operation. Substituting with correction candidate characters;
Input correction method including

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