JP2015090575A - Electronic apparatus, method of selecting candidates and program for selecting candidates of operation button - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus, a method of selecting candidates and a program for selecting candidates of an operation button that can easily select an objective operation button from a plurality of operation buttons.SOLUTION: An electronic apparatus includes a touch panel as an input interface, and has display means for displaying a plurality of operation buttons that can make input operation on the touch panel, determination means for determining whether or not a touch operation is a long press operation, and selection means for automatically selecting a candidate operation button from the plurality of operation buttons when determined that the touch operation is a long press operation. After the long press operation is finished, the input to the operation button, which has been selected by the selection means, is performed.

Description

  The present invention relates to a display device using a touch panel capable of displaying operation buttons and the like that can be input by a user, and more particularly to a method for selecting candidate operation buttons from a plurality of operation buttons.

  Currently, various electronic devices such as a personal computer, a smartphone, a tablet terminal, and an in-vehicle device are equipped with a touch panel, and various instructions are input by a touch operation on the touch panel (contact or approach of an object such as a finger). The touch operation is widely used by ordinary people who do not have IT skills because the operation buttons displayed on the display can be intuitively recognized. Touch operations include, for example, a tap operation or a double tap operation that presses an arbitrary position, a long tap operation that keeps pressing for a certain period of time, a slide operation or a flick operation that moves a finger in the pressed state, and two fingers that move closer or away There are various operation methods such as pinch operation, and smartphones and in-vehicle devices utilize these operation methods to improve operability and convenience, enabling various operation inputs such as menu display and various settings. Yes.

  For example, in Patent Document 1, a specific area for displaying a menu for selecting a function is set in advance on the inner periphery of the touch panel, so that the display of the touch panel can be effectively used without narrowing the display of icons. A display device that can be used is disclosed.

  Patent Document 2 discloses a technique related to a car navigation apparatus that improves the operability of scrolling and scale change for setting a destination and improving convenience. Using a pop-up menu that is displayed only by pointing on the map for a certain period of time, a map image with a desired magnification is displayed in the center of the screen, and the operations of scrolling and changing the scale are simplified.

JP 2010-26834 A JP 10-141974 A

  An electronic device using a touch panel as a user interface as described above has the following problems. When the user touches the operation button, the touch position may deviate from the target operation button, and the touch operation may not be performed correctly. In particular, an in-vehicle device used in a vehicle may not be able to accurately touch a certain position due to vibration during traveling. Furthermore, it is more remarkable when the operation button is small or the distance to extend the arm to the touch panel is long. In such a case, it is necessary to correct an erroneous touch operation or to redo the touch operation accurately. If the displacement of the touch position is due to an error between the touch position and its detection accuracy, the detection position by the touch operation can be calibrated. However, the detection accuracy is calibrated for the displacement of the touch position due to vibrations during traveling. Is not enough.

  The present invention solves such a conventional problem, and an electronic device capable of easily selecting a target operation button from among a plurality of operation buttons, a candidate selection method for operation buttons, and candidate selection The purpose is to provide a program.

  An electronic apparatus according to the present invention includes a touch panel as an input interface, and displays a plurality of operation buttons that can be input on the touch panel, and position detection that detects a touch-operated position. Means, measuring means for measuring the operation time of the touch operation, determination means for determining whether the operation time measured by the measurement means has exceeded a certain time, and the operation time has exceeded a certain time And selecting means for selecting a candidate operation button from the plurality of operation buttons based on the touch-operated position.

  Preferably, the electronic device further includes execution means for executing processing corresponding to the operation button selected by the selection means when the touch operation is completed. Preferably, the selection unit sets an operation button within a certain range from the touched position as a candidate. Preferably, the selection means uses an operation button in a predetermined area to which the touched position belongs as a candidate. Preferably, the selection unit uses an operation button belonging to the same category as the operation button closest to the touched position. Preferably, the selection means includes change means for sequentially changing the candidate operation buttons. Preferably, the changing means changes the operation buttons in order from the position where the touch operation is performed. Preferably, the selection means guides the candidate operation buttons by voice. Preferably, the selection unit highlights the candidate operation buttons. Preferably, the selection unit moves the candidate operation button to the touched position.

  The candidate selection method for selecting operation button candidates according to the present invention is executed by an electronic device having a touch panel as an input interface, and displays a plurality of operation buttons capable of input operation on the touch panel. A step of detecting a touch-operated position; a step of measuring the operation time of the touch operation; a step of determining whether or not the operation time exceeds a predetermined time; and the operation time of a predetermined time Selecting a candidate operation button from the plurality of operation buttons based on the touch-operated position.

  Preferably, the candidate selection method further includes a step of executing a process corresponding to the operation button selected by the selecting step when the touch operation is finished. Preferably, the selecting step includes a step of sequentially changing the candidate operation buttons. Preferably, in the step of changing, the operation buttons are changed in the order from the touched position. Preferably, in the selecting step, the candidate operation buttons are guided by voice. Preferably, the selecting step highlights the candidate operation buttons. Preferably, the selecting step moves the candidate operation button to the touch-operated position.

  A candidate selection program for selecting operation button candidates according to the present invention is executed by an electronic device having a touch panel as an input interface, and displays a plurality of operation buttons capable of input operation on the touch panel. A step of detecting a touch-operated position; a step of measuring the operation time of the touch operation; a step of determining whether or not the operation time exceeds a predetermined time; and the operation time of a predetermined time Selecting a candidate operation button from the plurality of operation buttons based on the touch-operated position.

  Preferably, the candidate selection program further includes a step of executing processing corresponding to the operation button selected by the selecting step when the touch operation is finished. Preferably, the selecting step includes a step of sequentially changing the candidate operation buttons. Preferably, in the selecting step, the candidate operation buttons are guided by voice. Preferably, the selecting step moves the candidate operation button to the touch-operated position.

  According to the present invention, when the operation time of the touch operation exceeds a certain time, the candidate operation button is selected from the plurality of operation buttons based on the touch position, so that the user can perform the operation Even in a situation where it is impossible to touch the button accurately, it becomes possible to easily perform input from the candidate operation buttons to the target operation button.

It is a block diagram which shows the structure of the vehicle-mounted apparatus which concerns on the Example of this invention. It is a block diagram which shows the functional structure of the candidate selection program of an operation button. It is a figure which illustrates the radio reproduction screen displayed on a display. It is a figure which illustrates the candidate object which concerns on a present Example, and demonstrates the operation button used as a candidate. It is a figure which shows the operation button used as the candidate which concerns on a present Example. It is a flowchart explaining the input mode which concerns on a present Example. It is a flowchart explaining the operation button candidate selection operation | movement by a present Example. It is a figure explaining the selection order of the operation button used as the candidate of a present Example. It is a figure explaining the other selection order of the operation button used as the candidate of a present Example.

  Embodiments of the present invention will be described in detail with reference to the drawings. The electronic device of the present invention includes a touch panel as an input interface, and may be, for example, a notebook PC, a tablet PC, a personal computer, an in-vehicle device, a game machine, a facility guide display device, or any other display device capable of touch input. it can. As a preferred mode, in touch input, unlike an operation time of a normal touch operation, an input mode is changed by pressing and holding an arbitrary position on the touch panel for a predetermined time or longer, and at least one of a plurality of operation buttons is selected. One operation button is selected as a candidate and presented to the user.

  Thereby, even when the target operation button cannot be pressed accurately during the touch operation, it is possible to input the presented candidate operation button. In particular, in the case of an in-vehicle device, the display screen cannot be viewed from the front, so that a visual shift occurs, and the touch position often deviates from the operation buttons because the vibration and operation instructions during travel are rushed. Even in such a case, a desired operation button can be selected without repeating the touch operation many times.

  Next, an in-vehicle device will be described with reference to the drawings as an example of an electronic device according to an embodiment of the present invention. FIG. 1 is a block diagram illustrating a configuration example of an in-vehicle device. The in-vehicle device 10 displays a multimedia playback unit 20 that plays back audio data and video data obtained from a CD, DVD, Blu-ray disc, hard disk device, and the like, and displays a road map around the vehicle position, The navigation unit 40 that guides the guidance route, the TV / radio receiver 60 that receives digital TV broadcasting, one-segment TV broadcasting, AM / FM radio broadcasting, and the like, and the smartphone that is brought into the vehicle are used as external access points. A display image including a communication unit 80 that enables communication with a network, an input unit 100 that receives an instruction from a user such as a switch and a touch panel, and an input interface such as a media playback image, a navigation image, a menu screen, and various setting screens On the display By executing the display control unit 120 to be displayed, the voice output unit 140 that outputs route guidance to the destination, road traffic information and warnings by voice, the storage unit 160 that stores programs and data, and the like A control unit 180 that controls each unit is included.

  The input unit 100 includes a touch panel superimposed on a display as an input interface. As is well known, the touch panel can detect, as XY coordinate data, a position where an object such as a finger contacts or approaches, or a position away from the position.

  In addition to displaying the media source, the display control unit 120 displays a plurality of operation buttons that can be input by the user on the menu screen and various setting screens. The plurality of operation buttons are displayed at predetermined positions in a predetermined manner. For example, on the destination setting screen on which the navigation function is executed, operation buttons for searching by category, searching by telephone number, searching by facility name, and the like are displayed. When the radio broadcast function is executed, operation buttons for selecting presets registered in advance by the broadcast station are displayed.

  The storage unit 160 can store music data necessary for media reproduction, road map data necessary for navigation, and the like in addition to programs essential for system operation. The storage unit 160 also stores information set by the user, for example, information such as the frequency of the broadcasting station registered in the radio broadcast preset button as described above.

  In a preferred embodiment, the control unit 180 includes a microcontroller or a microprocessor that includes a ROM, a RAM, and the like, and the ROM or the RAM can store various programs for controlling the operation of each unit of the in-vehicle device. . Further, in this embodiment, a program for controlling the interface of the touch panel is included. The program shifts to a special input mode different from the normal input mode when a touch operation is held down on the screen on which the operation buttons are displayed, and selects input candidates from a plurality of operation buttons according to a predetermined rule. One or more operation buttons are automatically selected and provided to the user to assist in user input.

  Next, FIG. 2 shows a functional configuration of an operation button candidate selection program for executing a special input mode according to the present embodiment. The operation button candidate selection program 200 includes an operation button display unit 202 that displays a plurality of operation buttons that can be input by a user on a display, a position detection unit 204 that detects a touch-operated position, and an operation that has been touch-operated. An operation time measuring means 206 for measuring time, a long press operation determining means 208 for determining whether or not the measured operation time exceeds a certain time and the touch operation is a long press operation (long tap operation), When it is determined that the touch operation is a long press operation, the candidate selection unit 210 that selects any one of a plurality of operation buttons as a candidate based on the position where the touch operation is performed, and when the touch operation ends, An execution unit 212 for executing processing corresponding to the candidate operation button.

  The operation button display unit 202 displays an operation button for receiving a user operation instruction on a menu screen, various setting screens, a multimedia playback screen, a navigation screen, and a radio playback screen. Various functions are associated with the operation buttons, and when a touch operation is performed, corresponding processing is executed by the execution unit 212.

  FIG. 3 is a diagram illustrating a radio broadcast playback screen displayed on the display. On the radio playback screen 220, for example, the reception frequency of the currently received radio and its broadcast station are displayed in the center. A plurality of operation buttons 230 are displayed on both sides for executing various functions. For example, in the left area of the radio playback screen 220, “Source” for switching media sources such as CD, DVD, terrestrial digital, and 1Seg, “Tune Down” for lowering the reception frequency, and “Seek DownUp” for searching for a frequency with high reception sensitivity. "Is displayed as the operation button 230. On the other hand, “Band” for switching the frequency band according to FM / AM is displayed in the right area, and “Tune Up” and “Seek Up” are displayed as operation buttons 230 so as to correspond to the left area.

  In addition to the above operation buttons, a plurality of “Preset” operation buttons for setting a radio reception frequency registered in advance by the user are prepared in the lower area of the radio playback screen 220. By touching one operation button 230, the radio reception frequency can be adjusted to a desired channel (broadcast station). The operation button display unit 202 displays the operation buttons at predetermined positions. In a preferred embodiment, the plurality of operation buttons are classified and displayed in the same or similar category. For example, in the example of FIG. 3, “Preset 1” to “Preset 6” are displayed as a group or grouped operation buttons 230 belonging to the preset function category. The function button position information, the operation button input name, and the function information including the operation button category displayed by the operation button display unit 202 are provided to the candidate selection unit 210 that selects operation button candidates.

  The position detection unit 204 detects a touch-operated position such as a position touched by a finger or a position away from the touch panel on the touch panel as coordinate data (X, Y). The position detection by the position detection unit 204 is provided to the operation time measurement unit 206, the operation time measurement unit 206, the long press operation determination unit 208, the candidate selection unit 210, and the execution unit 212. The detected coordinate data can be used as a touch position by a candidate selection unit 210 described later, or can be used for measuring an operation time, completing an operation, or the like.

  The operation time measuring means 206 can measure the time that the finger is touching on the touch panel, that is, the operation time by the touch operation. The operation time measuring means 206 can be executed by a known means. For example, the operation time measuring means 206 uses a counter that counts from the start to the end of position detection by the position detection means 204, or a timepiece built in the in-vehicle device 10. Using the function, the operation time is measured based on the time data when the finger touches.

  The long press operation determination unit 208 can determine whether the touch operation is a long press operation (long tap operation) based on the operation time measured by the operation time measurement unit 206. Preferably, the long press operation determination unit 208 determines that the long press operation is performed when the operation time exceeds a certain time, for example, 1 second. The time used as the determination condition can be appropriately set by the user.

  When it is determined that the touch operation is a long press operation, the candidate selection unit 210 selects an operation button to be a candidate target from the display screen based on the touched position. In a preferred embodiment, the candidate selection unit 210 selects one operation button as a candidate object with a time shift, and presents identification information by an image or sound so that the selected operation button is identified. For example, the display color of the operation button is switched so as to be highlighted, and when a certain time has elapsed, the highlighting is terminated and the display color of the next operation button is highlighted. Alternatively, the input name of the operation button is read out by voice, and when the predetermined time elapses, the input name of the next operation button is read out. In this way, the selection of operation buttons is sequentially switched. The selection result of the candidate selection unit 210 is provided to the operation button display unit 202 and the audio output unit 140. The operation button display unit 202 executes operation button highlighting and display switching based on the selection result of the candidate selection unit 210. The voice output unit 140 also reads out the names of the operation buttons based on the selection result of the candidate selection unit 210.

  FIG. 4 is a diagram exemplifying operation buttons to be candidates. When it is determined that the touch operation is a long press operation, the candidate selection unit 210 is within a range R1 of a certain distance from the touched position (touch position) T, for example, as shown in FIG. The operation button 230 can be selected as a candidate target. The candidate object is not limited to this, as shown in FIG. 4B, the radio playback screen 220 is touched in a predetermined area such as an upper left area, an upper right area, a lower left area, and a lower right area. The operation button 230 in the lower right region R2 corresponding to T may be a candidate target. In this embodiment, the operation button 230 on the boundary and the candidate target will be described. However, the present invention is not limited to this, and the operation button 230 on the boundary may be excluded from the candidate target.

  The candidate selection unit 210 can preferentially select the operation button 230 close to the touch position T from the candidate targets, and can sequentially change the selection to another operation button 230 after a predetermined time has elapsed. When the operation button 230 is selected as a candidate, it is highlighted and the input name of the operation button is read out by voice. For example, in the example of FIG. 4A, “Preset2”, “Preset3”, “Preset5”, “Preset6”, “SeekUp”, and “TuneUp” are candidate targets, and these selections are sequentially switched. As a modification of this aspect, an operation button in the same category as the operation button closest to the touch position T may be selected as a candidate target. In the example of FIG. 4A, “Preset 1” to “Preset 6”, which are the same category as the preset function, are selected as candidates.

  In another aspect, the candidate selection unit 210 may sequentially move the candidate operation buttons to the touch position T as shown in FIG. In this example, the operation button “Preset2” is moved to the touch position T, and then the operation button “Preset3” is moved to the touch position T.

  When the touch operation is completed, that is, when the finger is released from the touch panel, the execution unit 212 considers that there is an input to the selected candidate operation button, and executes processing corresponding to the operation button. . For example, as shown in FIG. 4A, when “Preset2” is selected as a candidate, that is, in a highlighted state, when the user's finger leaves the touch panel, the execution unit 212 sets “Preset2”. It is determined that there is an input to the operation button, and processing for changing to a reception frequency corresponding to “Preset2” is performed.

  FIG. 5A is a flowchart for explaining the operation in the input mode of the candidate selection program of this embodiment. The candidate selection program 200 determines that there has been a touch operation on the touch panel when a plurality of operation buttons are displayed by the operation button display means 202 and the position touched by the position detection means 204 is detected (S10). If it is determined that there is a touch operation, it is next determined whether or not it is a long press operation based on the results of the operation time measuring means 206 and the long press operation determining means 208 (S12). When it is determined that the operation is a long press operation, a special input mode for selecting a candidate operation button is performed (S14), and when it is determined that the operation button is not a long press operation, a normal input mode is performed (S16). ).

  Next, operation button candidate selection operations in the in-vehicle apparatus of this embodiment will be described with reference to the flowchart of FIG. For example, in order to listen to road traffic information, the radio function of the in-vehicle device 10 is activated. The in-vehicle device 10 displays a radio reproduction screen on the display according to the user instruction (S100). At this time, the operation button display means 202 displays a plurality of operation buttons 230 on a radio reproduction screen 230 as shown in FIG.

  When the user presses the touch panel with a finger to perform a touch operation on a desired operation button, the position detection unit 204 detects the touch position T on the touch panel (S102). When the touch position is shifted due to vibrations during driving and the desired operation button cannot be touched accurately, the user can perform a long press operation (long tap operation) to enter the normal input mode. To a special input mode.

  When the touch position T is detected, the operation time measuring means 206 measures the time from the time when the finger touches the touch panel, that is, the operation time of the touch operation (S104). The long press operation determination unit 208 determines whether or not the touch operation is a long press operation based on the operation time measured by the operation time measurement unit 206 (S106).

  When it is determined that the touch operation is a long press operation, a special input mode is performed. That is, based on the touch position T, the candidate selection unit 210 specifies one or a plurality of operation buttons from among the plurality of operation buttons displayed on the screen as a candidate target (S108). As a candidate object, for example, as shown in FIG. 4A, an operation button in a range R1 at a certain distance from the touch position T is specified, or corresponds to the touch position T as shown in FIG. An operation button in the lower right region R2 or the like is specified.

  The candidate selection unit 210 selects an operation button having the closest touch position T from among a plurality of operation buttons that are candidate targets (S110). In order to notify that it has been selected, the operation button is highlighted by highlighting, or the input name of the operation button is read out by voice. As a result, the user can recognize the selected operation button. The execution unit 212 determines whether or not the touch operation has been completed based on the detection result of the position detection unit 204, that is, whether or not the finger has been removed from the touch panel (S112). Then, it is considered that there is an input to the operation button selected when the touch operation is completed, and processing corresponding to the operation button is executed (S114). If the touch operation is continued without ending, the candidate selection unit 210 selects the next operation button from the identified candidate targets (S110). The candidate operation buttons are sequentially switched at regular intervals, and input to the selected operation button is executed when the finger is removed from the touch panel.

  FIG. 7 is a diagram for explaining switching of selection of candidate operation buttons. First, as shown in FIG. 7A, the candidate selection unit 210 selects “Preset 6” that is closest to the touch position T, highlights it, and reads out the operation button name. After a certain period of time has elapsed, as shown in FIG. 7B, the candidate operation button is switched to “Preset 3” at a position closest to “Preset 6”. Further, when a certain time has elapsed, as shown in FIG. 7C, the candidate operation button is switched to “Seek Up”. The candidate selection unit 210 preferentially selects an operation button close to the touch position T so that a desired operation button to be touched is selected in a relatively short time. If “Preset3” in FIG. 7B is selected and the finger is released from the touch panel, it is determined that there is an input to “Preset3”, and “Preset3” is executed.

  FIG. 8 shows an example of switching operation button selection corresponding to FIG. In FIG. 8A, “Preset2” is moved to the touch position T, in FIG. 8B, “Preset5” to be selected next is moved to the touch position T, and in FIG. The selected “Preset3” is moved. Thus, the operation button is moved as if the user himself selected the operation button. In this example, it is possible to easily recognize which operation button is selected by moving the operation button to the touch position T, but the operation button can be moved without moving the operation button. It may be displayed below the touch position T. That is, in the example of FIG. 8A, “Preset2” is displayed as it is, and “Preset2” is also displayed below the touch position T. Further, the display of the selected operation button can be changed and the input name can be read aloud.

  On the other hand, when it is determined that the touch operation is not a long press (S106), the normal input mode is performed, and it is determined whether or not the touched position matches the operation button (S120). If there is a matching operation button, the process corresponding to the operation button is executed (S114), and if there is no operation button, the process ends.

  As described above, according to this embodiment, when a long press operation is performed in a situation where the operation buttons cannot be touched accurately, the operation buttons around the touch position are automatically selected sequentially and the touch operation is released. It is possible to execute an input to the operation button selected in. As a result, the user can easily input the operation button even in an environment where there is vibration such as in the vehicle without repeating the touch operation.

  In the above embodiment, the operation buttons that are candidate targets are narrowed down from a plurality of operation buttons. However, it is not always necessary to narrow down candidate objects. For example, all the operation buttons displayed on the screen may be candidates, and in this case, the operation buttons may be sequentially selected based on the touch position. In addition, the number of operation buttons specified as candidate targets may be set in advance. Thereby, candidate objects are limited and a desired operation button is selected more efficiently.

  Furthermore, in the above-described embodiment, the operation button is highlighted so that the selected operation button can be identified. However, only the voice may be read out without highlighting. The user ends the touch operation when the target operation button is read out. Thereby, the user can complete the input to the operation button without looking at the screen.

  Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to specific embodiments, and various modifications and changes can be made within the scope of the gist of the invention described in the claims. Is possible.

DESCRIPTION OF SYMBOLS 10: In-vehicle apparatus 20: Multimedia reproduction part 40: Navigation part 60: Television / radio reception part 80: Communication part 100: Input part 120: Display control part 140: Audio | voice output part 160: Storage part 180: Control part 200: Candidate Selection program 202: Operation button display means 204: Position detection means 206: Operation time measurement means 208: Long press operation determination means 210: Candidate selection means 212: Execution means

Claims (22)

An electronic device having a touch panel as an input interface,
Display means for displaying a plurality of operation buttons capable of input operation on the touch panel;
Position detecting means for detecting a touch-operated position;
Measuring means for measuring the touch-operated operation time;
Determining means for determining whether or not the operation time measured by the measuring means exceeds a certain time;
A selection means for selecting a candidate operation button from the plurality of operation buttons based on the touch-operated position when it is determined that the operation time exceeds a predetermined time;
An electronic device. The electronic device according to claim 1, further comprising execution means for executing processing corresponding to the operation button selected by the selection means when the touch operation is completed. The electronic device according to claim 1, wherein the selection unit uses an operation button within a certain range from the touched position as a candidate. The electronic device according to any one of claims 1 to 3, wherein the selection unit uses an operation button in a predetermined area to which the touched position belongs as a candidate. 4. The electronic device according to claim 1, wherein the selection unit uses an operation button belonging to the same category as the operation button located closest to the touch-operated position. 5. 6. The electronic apparatus according to claim 1, wherein the selection unit includes a changing unit that sequentially changes the candidate operation buttons. The electronic device according to claim 1, wherein the changing unit changes the operation button in an order from a position closer to the touched position. The electronic device according to claim 1, wherein the selection unit guides the candidate operation buttons by voice. The electronic device according to claim 1, wherein the selection unit highlights the candidate operation buttons. The electronic device according to claim 1, wherein the selection unit moves the candidate operation button to the touch-operated position. A candidate selection method for selecting candidate operation buttons executed by an electronic device having a touch panel as an input interface,
Displaying a plurality of operation buttons capable of input operation on the touch panel;
Detecting a touch-operated position;
Measuring the operation time of the touch operation;
Determining whether the operation time exceeds a certain time;
Selecting a candidate operation button from the plurality of operation buttons based on the touch-operated position when it is determined that the operation time exceeds a certain time; and
A method for selecting candidate operation buttons. The candidate selection method according to claim 11, further comprising executing a process corresponding to the operation button selected by the selecting step when the touch operation is completed. The operation button candidate selection method according to claim 11 or 12, wherein the selecting step includes a step of sequentially changing the candidate operation buttons. The candidate selection method according to claim 13, wherein in the changing step, the operation buttons are changed in an order from a position closer to the touch-operated position. The candidate selection method according to claim 11, wherein in the selecting step, the candidate operation buttons are guided by voice. The candidate selection method according to claim 11, wherein the selecting step highlights the candidate operation button. The candidate selection method according to claim 11, wherein the selecting step moves the candidate operation button to the touch-operated position. A candidate selection program for selecting candidate operation buttons executed by an electronic device having a touch panel as an input interface,
Displaying a plurality of operation buttons capable of input operation on the touch panel;
Detecting a touch-operated position;
Measuring the operation time of the touch operation;
Determining whether the operation time exceeds a certain time;
Selecting a candidate operation button from the plurality of operation buttons based on the touch-operated position when it is determined that the operation time exceeds a certain time; and
A candidate selection program for operation buttons. The candidate selection program according to claim 18, further comprising a step of executing a process corresponding to the operation button selected by the selecting step when the touch operation is completed. 20. The operation button candidate selection program according to claim 18, wherein the selecting step includes a step of sequentially changing the candidate operation buttons. 21. The candidate selection program according to claim 18, wherein the selecting step guides the candidate operation buttons by voice. The candidate selecting program according to any one of claims 18 to 21, wherein the selecting step moves the candidate operation button to the touch-operated position.

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