JP2014086018A - Input device, angle input device, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a user to fast input characters without viewing a screen by using simple touch operations easy to remember.SOLUTION: An input device 100 includes: a touch screen 2 for input/output of information; a storage unit 3 in which a character conversion table 31 having a plurality of input values corresponding to respective combinations of a first angular range and a second angular range is stored; and a character input processing unit 12 which performs first detection of detecting a first angle formed between a line from a first start point to a first end point of a drag operation and a first coordinate system in response to input of a first operation on the touch screen 2 and second detection of detecting a second angle formed between a line from a second start point to a second end point of a drag operation in response to input of a second operation with the first end point as the start point, following the first operation, and determines an input value on the basis of the character conversion table 31 in accordance with the combination between the first angular range corresponding to the first angle and the second angular range corresponding to the second angle.

Description

  The present invention relates to an input device for inputting information on a touch screen, an angle input device, and a program.

  In recent years, portable terminals having a multi-touch screen, such as smartphones and tablets, are becoming popular. Since the market size of these terminals is large, the introduction of the latest functions and applications is fast, and it is becoming a convenient communication terminal. In this situation, it is preferable that visually impaired persons can enjoy the benefits of the terminal, and there is a demand from them for using the terminal used by healthy persons.

  The touch operation of the multi-touch screen realizes an intuitive and simple operation for a healthy person, but it is difficult for a visually handicapped person because there is no tactile sensation. In particular, a character input operation for using a mail or Internet search function is frequently used, and an easy-to-use operation method is required.

  Therefore, Non-Patent Document 1 proposes a character input method using a soft keyboard using voice assistance by Voiceover as a character input method using a multi-touch screen touch operation for visually impaired persons. In this method, the user touches a button touched by a user on a keyboard on the screen. Then, after reaching the position of the target button, the button can be selected by double-tapping on the button.

  Non-Patent Document 2 proposes a character input method by drawing characters due to the appearance of a terminal equipped with a multi-touch screen.

"Apple-Accessibility-iPad-For people with visual disabilities.", [Online], [Search September 24, 2012], Internet <URL: http://www.apple.com/accessibility/ ipad / vision.html> "CELL REGZA Remote Control Touchpad Stroke Recognition Technology", Toshiba Review vol.65, No.4, pp31-34, (April 2010 issue)

  However, the technique of Non-Patent Document 1 is difficult to use in the following respects as compared with the conventional character input by pressing a physical button. First, rather than grasping the position of a button touched by unevenness like a conventional physical button, it takes time to grasp the touched button by voice. In other words, character input with a soft keyboard using voice assistance by Voiceover takes operation time compared with character input with a conventional physical button. Secondly, it was a double tap that only pushed the button when determining the button, and the work increased. Third, since the finger is released from the screen when double-tapping, there is a possibility that the wrong button is pressed when the button is pressed again. Fourth, it is difficult to use because the keyboard size changes depending on the orientation of the terminal. Based on the above points, even if voice assistance is provided by Voiceover, character input operations using the keyboard are not suitable for visually impaired people.

  In the technique according to Non-Patent Document 2, it takes time to input one character by keyboard input, or a character drawn for a visually impaired person cannot be confirmed visually. I cannot determine how to fix it. In addition, since there is only a means of knowing the shape of characters used for input by voice, it takes time to learn finger movements necessary for input.

  The present invention has been made paying attention to the above circumstances, and an object thereof is to provide an input device, an angle input device, and a program capable of inputting characters at high speed without looking at the screen using a touch operation that is simple and easy to remember. Is to provide.

  To achieve the above object, according to a first aspect of the present invention, there is provided a touch screen for inputting / outputting information, and a conversion having a plurality of input values corresponding to each combination of the first angle range and the second angle range. When a first operation is input on the touch screen and a storage unit that stores a table, the first coordinate system is formed by a straight line from the first start point to the first end point and the first coordinate system. The first detection means for detecting the angle and the second dragged from the second starting point when the second operation starting from the first end point is input continuously to the first operation. Second detection means for detecting a second angle formed by a straight line to the end point of the second coordinate system and the second coordinate system, a first angle range corresponding to the first angle, and a second angle corresponding to the second angle. From the combination with the angle range of 2, the input value is calculated based on the conversion table. Those comprising an input determination means for constant.

  According to the first aspect, it is possible to input characters by a simple operation with only two drag operations, and a technique such as cited reference 1 that determines whether a button is desired to be input by listening to a voice reading a button. In addition, it is possible to input characters at high speed as compared to the technique of the cited document 2 in which characters are input by handwriting.

According to a second aspect of the present invention, in the second detection unit according to the first aspect, a distance between the first end point and a current position is greater than a predetermined distance, and the current position and the first end point. When the difference between the angle formed by the straight line passing through the first coordinate system and the first angle is larger than a predetermined angle, the second starting point is updated to the current position.
According to the second aspect, it is possible to eliminate the angle detection error due to the overshoot of the movement distance of the finger that occurs when the second drag operation is started after the first drag operation, and the input accuracy is improved. be able to.

According to a third aspect of the present invention, the first end point at which the finger is separated in the first detection means of the first aspect is greater than a predetermined first distance from the first starting point and the first A first flick input detection area smaller than a predetermined second distance from the starting point of the first angle formed by the straight line from the first starting point to the first end point and the first coordinate system And the input determining means is executed with the second angle as the first angle.
According to the third aspect, when the first drag operation tends to be a flick operation, it is possible to cope with a decrease in the detected distance (the finger leaves the touch screen early after the drag starts). Thus, it becomes possible to input at higher speed than the first and second aspects.

According to a fourth aspect of the present invention, the second end point where the finger is separated in the second detection means of the first aspect is greater than the first distance from the second starting point and the second When the second flick input detection area is smaller than the second distance from the start point, a second angle formed by the second coordinate system and the straight line from the second start point to the second end point is detected. To do.
According to the fourth aspect, when the second drag operation tends to be a flick operation, it is possible to cope with a decrease in the detected distance (the finger leaves the touch screen early after the drag starts). Thus, it becomes possible to input at higher speed than the first and second aspects.

According to a fifth aspect of the present invention, there is provided a touch screen for inputting / outputting information, and an angle formed by a predetermined coordinate system and a straight line from a starting point to a dragged end point when an operation is input on the touch screen. A detecting means for detecting the angle, a notifying means for notifying the angle range corresponding to the angle by voice, and after the voice notification by the notifying means, the counterclockwise direction or the clockwise direction centering on the starting point. When a movement is detected, a correction means for correcting the angle range detected by the detection means to an angle range adjacent to the direction is provided.
According to the fifth aspect, in preparation for a case where the input direction is mistaken at the time of operation, the selected angle range is fed back by voice and the angle range is adjusted by moving the finger in the counterclockwise direction or the clockwise direction. The selection can be corrected, further improving convenience.

According to a sixth aspect of the present invention, there is provided a touch screen for inputting and outputting information, a predetermined point in a predetermined display area of the touch screen, and a plurality of angle ranges in a plurality of directions from the center. Display processing means for displaying the center and the angle range on the screen, and detection for detecting an angle formed by a predetermined coordinate system and a straight line from the starting point to the dragged end point when an operation is input on the touch screen The display processing means changes the display mode of the center when the starting point is detected, and changes the display mode of the angle range corresponding to the angle when the end point is detected. Is.
According to the sixth aspect, it is possible to obtain an effect of visual feedback for a healthy person by displaying the angle range on the screen of the touch screen.

According to a seventh aspect of the present invention, in the sixth aspect, the display area is provided in an area different from the operation input area.
If the display area and the operation input area are combined, the user may be aware of the position of the finger, which may be a burden, but in the seventh aspect, by providing both in different areas, the degree of freedom of operation is increased. Higher and easier to use input interface.

  That is, according to the present invention, it is possible to provide an input device, an angle input device, and a program that can input characters at high speed without looking at the screen using a simple and easy-to-remember touch operation.

The block diagram which shows the function structure of the input device which concerns on one Embodiment of this invention. The figure which shows the operation area on a touch screen. The figure which shows an example of the character conversion table of a right hand operation area. The figure which shows an example of the character conversion table of a left hand operation area. 3 is a flowchart illustrating a processing outline of a control unit according to the first embodiment. 5 is a flowchart illustrating a processing outline of a character input processing unit according to the first embodiment. 5 is a flowchart illustrating a reference point determination process for creating a first area according to the first exemplary embodiment. The flowchart which shows the movement direction identification process of the finger | toe with respect to the position which the finger | toe of Example 1 touched. 5 is a flowchart illustrating a reference point determination process for creating a second region in the first embodiment. 7 is a flowchart illustrating a second finger movement direction identification process with respect to a first finger movement direction according to the first embodiment. 5 is a flowchart illustrating input character determination processing according to the first embodiment. FIG. 6 is a diagram for explaining area creation and area selection according to the first embodiment. 9 is a flowchart illustrating a processing outline of a character input processing unit according to the second embodiment. 10 is a flowchart illustrating reference point update and region re-creation processing for second region creation according to the second embodiment. FIG. 10 is a diagram for explaining reference point update and region recreation in the second region creation in the second embodiment. 10 is a flowchart illustrating flick input detection processing according to the third embodiment. 10 is a flowchart illustrating finger movement direction identification processing for a position touched by a finger according to the third embodiment. 10 is a flowchart illustrating second finger movement direction identification processing with respect to the first finger movement direction according to the third embodiment. FIG. 10 is a diagram for explaining area creation according to the third embodiment. 10 is a flowchart illustrating region selection correction processing according to the fourth embodiment. The figure which shows the example of a display of the visual feedback before the finger | toe of Example 5 touches. The figure which shows the example of a display of the visual feedback when the finger | toe of Example 5 touches. FIG. 16 is a diagram illustrating a display example of visual feedback after the first area selection according to the fifth embodiment.

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a functional configuration of an input device according to an embodiment of the present invention. The input device 100 includes a control unit 1, a touch screen 2, and a storage unit 3. The touch screen 2 includes an operation input unit 21 that inputs operation information by a touch operation, and a display unit 22 that displays characters, images, and the like according to display control by the control unit 1. The control unit 1 includes an operation determination unit 11 that determines character input processing and other processing based on operation information input by the operation input unit 21, a character input processing unit 12 that performs character input processing, and a character type. A character type conversion / ENTER input unit 13 for performing conversion and ENTER input, and a display processing unit 14 for performing display control on the display unit 22. In the storage unit 3, a character conversion table 31 used in the character input processing unit 12 is stored in advance.

  In this embodiment, a left hand operation area and a right hand operation area are provided on the touch screen as shown in FIG. 2, characters are input using both hands, and a character conversion table 31 as shown in FIGS. 3 and 4 is used. Provide a character input method in which characters that can be input by the right hand and the left hand are different. FIGS. 3 and 4 show hiragana input as an example, and the input character is determined by a combination of area selection A1 (consonant) and area selection A2 (vowel) in each of the right hand operation area and the left hand operation area. Hereinafter, the operation of the input device 100 configured as described above will be described according to each embodiment.

Example 1
The character input operation according to the first embodiment is performed by detecting the region selection A1 and the region selection A2 by drawing a straight line twice without releasing the finger from the touch screen. Specifically, for example, by moving the touched finger in one of eight directions (upper, upper right, right, lower right, lower, lower left, left, upper left) from the position where the finger touched the touch screen. Select the consonant corresponding to the area (angle range) indicated by the moved direction, move the finger, and then move the finger in eight directions (upper, upper right, right, lower right, lower, lower left) , Left, upper left), select a vowel corresponding to the area (angle range) indicated by the direction of movement or flipping by moving your finger Is realized.

  Embodiment 1 will be described with reference to the flowcharts of FIGS. FIG. 5 is a flowchart showing an outline of processing of the control unit 1. The control unit 1 touches an event that occurs when the finger touches the screen, moves on the screen, or moves away from the screen according to operation information input from the operation input unit 21 of the touch screen 2. It detects as an event (process 110).

  When there is a touch event, the operation determination unit 11 acquires the number of fingers touching the screen and the current position of each finger on the screen (processing 111). When the number of fingers touched by the user on the touch screen is 3 or more, no processing is performed. Further, when the number of touched fingers is two and there are two fingers in the left hand operation area (FIG. 2) (Process 113), or there are two fingers in the right hand operation area (FIG. 2). In the case (process 114), no process is performed. On the other hand, if there are two fingers in the left-hand operation area and the right-hand operation area, respectively, and the touch timing is the same, it is determined that there has been an operation input other than the character input operation (process 115), and the character type conversion / The ENTER input unit 13 performs a process of changing the character type or an ENTER input process (process 116). For example, after pinching out, the character type can be changed from “Hiragana” ⇒ “Alphabet” ⇒ “Numeric input” ⇒ “Hiragana”. Also, when pinching in, the ENTER input is enabled.

  In the process 115, when the operation start timing of each finger is different, it is determined that the character input of the other finger is performed while the character input of one finger is being performed, and the character input processing unit 12 Character input processing (processing 116) in the right hand operation area and character input processing (processing 117) in the left hand operation area are performed. In processing 111, when the number of fingers touching the touch screen is one, it is determined whether the touched finger exists in the left hand operation area or the right hand operation area (processing 112), and the right hand operation area is determined according to the determined area. Character input processing (processing 118) or right-hand operation area character input processing (processing 119) is performed.

  FIG. 6 is a flowchart showing an outline of processing of the character input processing unit 12. Character input processing is performed for each finger, but since the processing content is the same, FIG. 6 shows the processing content when one finger touches. The only difference between the left hand and the right hand is that the characters that can be input are different (FIGS. 3 and 4). A state where the finger is not touching the touch screen is defined as P0.

[Process 210: Reference Point Determination Process for First Area Creation]
When the finger touches the touch screen, the character input processing unit 12 identifies the state P0 (process 201), and performs a reference point determination process for the first area creation (process 210). Details of the processing 210 are shown in FIG. In FIG. 7, the position B0 where the finger first touched the touch screen is memorized (process 230), and the position B0 is set as the origin, and as shown in FIG. Eight regions R0 to R7 constituted by straight lines are created (processing 231). After the process 210, the process transits to the state P1 (process 220).

[Process 211: Finger Movement Direction Identification Process for the Position Touched by the Finger]
In state P1, a finger movement direction identification process is performed for the position touched by the finger (process 211). Details of the processing 211 are shown in FIG. When the finger is released from the touch screen in the state P1, the state is returned to the state P0 (process 240). When the finger is not moved away from the touch screen and the current position of the finger is moved from the point B0 to a position away from Tr1 as shown in FIG. 12B (step 241), steps 242 to 243 are performed. Specifically, a coordinate system whose origin is the straight point B0 passing through the current position of the finger and the point B0 (a coordinate system in which the horizontal direction passing through the origin is the x-axis and the vertical direction passing through the origin is the y-axis) The angle with respect to (angle TA1 in FIG. 12B) is measured and stored (process 242). Then, one of the regions R0 to R7 is selected based on the measured angle and stored in the region selection A1 (processing 243). Note that the angle TA1 may be an angle with respect to an absolute coordinate system having the origin at the upper left point of the touch screen.

[Process 212: Process for Determining Reference Point for Second Area Creation]
After the first area selection process of process 243, a process of determining a reference point for creating the second area is performed (process 212). Details of the processing 212 are shown in FIG. Specifically, the finger position coordinates are stored as B1 (process 250), and the position B1 is set as the origin, and a circle area centered on the origin as shown in FIG. 12C and a straight line passing through the origin are formed. Regions R0 to R7 are created (process 251). After the process 212, the process transits to the state P3 (process 222).

[Process 213: Second finger movement direction identification process with respect to first finger movement direction]
In state P3, a second finger movement direction identification process is performed with respect to the first finger movement direction (process 213). Details of the process 213 are shown in FIG. When the finger is released from the touch screen in the state P3, the state is returned to the state P0 (processing 260). If the finger does not move away from the touch screen and the current position of the finger moves from the point B1 to a position away from Tr2 as shown in FIG. 12D, processes 262 to 263 are performed. Specifically, a coordinate system whose origin is the straight point B1 passing through the current position of the finger and the point B1 (a coordinate system in which the horizontal direction passing through the origin is the x axis and the vertical direction passing through the origin is the y axis) Is measured and stored (processing 262). Then, one of the regions R0 to R7 is selected based on the measured angle and stored in the region selection A2 (processing 263). After the process 213, the state transitions to the state P4 (process 224). The angle TA2 may be an angle with respect to an absolute coordinate system having the origin at the upper left point of the touch screen.

[Process 214: Input Character Determination Process]
In state P4, an input character determination process is performed (process 214). Details of the processing 212 are shown in FIG. When the finger is removed from the touch screen in the state P4 (process 270), character input is performed (process 271). The input character is determined by a combination of the values of area selection A1 and area selection A2 using character conversion data as shown in FIGS.

As described above, in the first embodiment, the angle of two consecutive drag operations on the touch screen (drag operation that can be considered that the end point of the first drag operation and the start point of the second drag operation are the same) is set. Each is detected, and the vertical range and horizontal axis of the input table are associated with the angular range of the first operation angle and the second operation angle range, respectively, and the characters or commands of the table elements are input. .
Therefore, according to the first embodiment, it is possible to realize an operation method that allows a visually impaired person to input characters using a touch operation that is simple and easy to remember. In addition, for a healthy person, it is possible to realize an operation method in which characters can be input without looking at a screen or a remote controller.

(Example 2)
FIG. 13 shows a flowchart of the processing outline of the character input processing unit of the second embodiment. The character input operation of the first embodiment is an operation of drawing a straight line twice without releasing the finger from the touch screen. At this time, when the second straight line is drawn after drawing the first straight line, the second straight line is drawn after stopping the finger once. When the user draws the first straight line without seeing the eye, the point that the user stopped before drawing the second straight line is ahead of the point at which the first area selection (process 243 in FIG. 8) is detected. There is a tendency to overshoot, and the degree of overshoot also tends to vary from person to person. For this reason, the angle TA2 of the second straight line drawn by the user is different from the angle that the user thinks moved, and there is a problem of erroneously selecting the second region. Therefore, in the second embodiment, in order to solve this problem, a second reference point update and region re-creation process (process 213 in FIG. 13) is added.

13 differs from FIG. 6 of the first embodiment in that processes 300 to 302 are added and the process 222 is changed to a process 303. The change from the process 222 to the process 303 is that the process 300 is changed to the state P2 in order to perform the process 300.
[Process 300: Reference Point Update and Area Recreation Processing for Second Area Creation]
FIG. 14 shows details of the reference point update and region recreation processing for the second region creation in the second embodiment. When the character input processing unit 12 overshoots from the point B1 to the point b1 as shown in FIG. 15A, the distance between the current position b1 of the finger and B1 is larger than the threshold value Tk as shown in FIG. 15B. In the case (processing 312), processing 313 is performed. In the process 313, a coordinate system having a straight line passing through the current positions b1 and B1 of the finger and a point B1 as an origin (a coordinate system having a horizontal direction passing through the origin as an x-axis and a vertical direction passing through the origin as a y-axis) The absolute value of the difference from the angle TA1 measured when the finger is moved for the first time is taken. If the difference is larger than the predetermined threshold Th, it is determined that the second straight line has started to be drawn, and the state P3 (processing 302) ).

  On the other hand, if the difference is smaller than Th in process 313, it is determined that overshoot has occurred, the value of B1 is updated to the current position b1 of the finger (process S314), and the area is recreated (FIG. 15 (c)). I do. The reason why the threshold value Tk is used in the processing 312 is that the touch screen is a sensitive sensor, so that the position of the finger is likely to be displaced. That is, even if the finger is moved in the direction of the angle α, there is a possibility that the angle is recognized as −α. This leads to misrecognition of the process 313, so the process 312 is added.

  Here, in the second area selection, the area selection in the same direction as TA1 cannot be performed. However, in the same direction as TA1, in FIG. 14, when the finger is separated from the touch screen at the position of the point b1 (process 310), it may be determined that the area is selected in the same direction as TA1 (process 311). ). That is, the area selection A2 is the same as the area selection A1.

  As described above, in the second embodiment, by adding the reference point update and the region re-creation process for the second region creation, the finger generated when the second drag operation is started after the first drag operation is performed. The angle detection error due to the overshoot of the movement distance can be eliminated, and the input accuracy can be improved as compared with the first embodiment.

(Example 3)
When you get used to the above character input method, the user does not move the finger and then release it (hereinafter drag operation), but moves the finger while moving the finger (hereinafter referred to as flick operation). Call). In the case of a flick operation in which a finger is moved and then released, the movement distance of the finger may be shorter than the drag operation. Therefore, the flick input detection process shown in FIG. 16 is added to the finger movement direction identification process 211 for the position touched by the finger and the second finger movement direction identification process 213 for the first finger movement direction. Specifically, as shown in the flowcharts of FIGS. 17 and 18, a flick input detection process (process 280) is added. With the addition of the flick input detection process, the area to be created is changed from FIG. 12 (a) to FIG. 19 (a) and from FIG. 12 (c) to FIG. 19 (c).

[Process 280: Flick input detection process]
In process 400 of FIG. 16, state P1 or state P3 is determined. In the state P1, two circular areas having different sizes with B0 as the origin are set as shown in FIG. The radius of the small circle is Td, and the radius of the large circle is Tr1. As shown in FIG. 19B, when the finger is separated from the touch screen between the small circle and the large circle and the finger speed is fast, it can be determined that the input is a flick. A process 401 detects that the finger is separated between the small circle and the large circle. When a flick is detected, the angle TA1 between the position b2 where the finger is separated and the point B0 is measured (process 402), an area is selected based on the measured angle TA1 (process 403), and characters are input (process 404). In the character input process of process 404, A2 is also selected as the same area as A1.

  In the case of the state P3 in the process 400, two circular areas having different sizes with the origin B1 as shown in FIG. 19C are set, and in the processes 405 to 408, the area selection A2 is selected by flick input. Determine the character. That is, similarly to the process 401, as shown in FIG. 19D, the distance between the current position b3 of the finger and B1 is larger than Td, and the distance between the current position b3 of the finger and B1 is Tr2 ( If it is smaller than FIG. 19 (c)) (process 405), it is determined that the input is a flick. Then, the angle TA2 of the straight line between the current positions b3 and B1 of the finger is measured and stored (process 406), a second area selection A2 is performed based on the measured angle TA2 (process 407), and a character is input (process 407). Processing 408).

  As described above, according to the third embodiment, when the first drag operation or the second drag operation tends to be a flick operation, the detected distance becomes short (after the drag starts, the finger leaves the touch screen at an early stage). This makes it possible to input data at a higher speed than in the first and second embodiments.

(Example 4)
In the fourth embodiment, it is assumed that a voice is output when each area is selected, and voice notification means (not shown) for notifying the user which area has been selected is provided. This function is performed simultaneously with the selection of area selection A1 and area selection A2. Before getting used to the character input method, there is a tendency that the second region selection is performed by a drag operation. In addition, the input direction may be mistaken before getting used. However, the mistaken range is a region adjacent to the target region. Therefore, when the area information selected in the second area selection is heard by voice, if it is different from the area to be selected, the finger is moved in the counterclockwise direction or the clockwise direction from B1 as the origin. This makes it possible to select adjacent areas. This enables even beginners to input characters with high accuracy. In the fourth embodiment, as shown in FIG. 20, an area selection correction process (process 290) is added to the input character determination process (process 214).

[Process 290: Area selection correction process]
In the process 270 of FIG. 20, when the finger is not separated from the touch screen and the angle −TA2 with respect to the coordinate system with the origin of the straight line passing through the current position of the finger and B1 and the point B1 is smaller than −Tm ( Process 500), an area adjacent to A2 counterclockwise is selected (process 501). On the other hand, when the angle −TA2 of the coordinate system having the straight line passing through the current position of the finger and B1 and the point B1 as the origin is larger than −Tm (process 500), a region adjacent to A2 in the clockwise direction is selected (step 500). Process 503).

  Therefore, according to the fifth embodiment, in preparation for the case where the input direction is mistaken at the time of operation, the selected region is fed back by voice notification, and the region is moved by moving the finger in the counterclockwise direction or the clockwise direction. The selection can be corrected, and the convenience can be further improved.

(Example 5)
As an assist before getting used to the character input method, the visually impaired person may notify the user of which area is selected by voice when selecting the area. On the other hand, since a healthy person can utilize vision, operation assistance can be performed using screen display by the display unit 22. In the fifth embodiment, a screen display performed by the display processing unit 14 serving as input assistance in this character input method will be described.

  First, visual feedback when a finger is not touching is shown in FIG. This indicates that there are areas that can be selected in eight directions with respect to the origin. In this character input method, the area is selected according to the direction of finger movement. If the display area and the operation input area are combined, the user is conscious of the position of the finger, which is a burden. Feedback is displayed in different places.

  When the finger touches the operation input area, for example, as shown in FIG. 22, the display mode (for example, color) of the center circle is changed to indicate that the origin is determined. When the first area selection A1 (for example, “TA” is selected), the display mode of the area selected by A1 is changed as shown in FIG. 23, “Tachi, Tetsu, Teto” is displayed in five directions). It is easy to understand that a selectable area widens from the area selected when displaying in eight directions. This is a character input method having such visual feedback. The display mode is not limited to the color, and may be an enlarged display, a thick line display, a blinking display, or the like of a circle.

  As described above, according to the fifth embodiment, it is possible to obtain an effect of visual feedback for a healthy person by displaying the angle range on the screen of the touch screen. In addition, by providing the display area and the operation input area in different areas, the user does not need to be aware of the position of the finger, so that the degree of freedom of operation can be increased and an easy-to-use input interface can be realized.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  DESCRIPTION OF SYMBOLS 100 ... Input device, 1 ... Control part, 2 ... Touch screen, 3 ... Memory | storage part, 31 ... Character conversion table, 11 ... Operation discrimination | determination part, 12 ... Character input process part, 13 ... Character type conversion / ENTER input part, 14 ... display processing unit, 21 ... operation input unit, 22 ... display unit.

Claims (8)

A touch screen that inputs and outputs information;
A storage unit for storing a conversion table having a plurality of input values corresponding to each combination of the first angle range and the second angle range;
First detection for detecting a first angle formed by a first coordinate system and a straight line from a first starting point to a first end point when a first operation is input on the touch screen. Means,
When a second operation starting from the first end point is input continuously to the first operation, a straight line from the second start point to the second end point and the second coordinate system Second detection means for detecting a second angle formed by:
Input determining means for determining an input value based on the conversion table from a combination of a first angle range corresponding to the first angle and a second angle range corresponding to the second angle; An input device characterized by that.   In the second detection means, a distance between the first end point and the current position is greater than a predetermined distance, and a straight line passing through the current position and the first end point forms the first coordinate system. The input device according to claim 1, further comprising: updating the second starting point to the current position when a difference between the angle and the first angle is larger than a predetermined angle.   A first flick having a first end point at which the finger is separated in the first detection means is larger than a predetermined first distance from the first starting point and smaller than a predetermined second distance from the first starting point. When in the input detection area, the first angle formed by the first coordinate system and the straight line from the first start point to the first end point is detected, and the second angle is set as the first angle. The input device according to claim 1, further comprising: executing the input determination unit.   Second flick input detection in which the second end point at which the finger is separated in the second detection means is greater than the first distance from the second start point and less than the second distance from the second start point. 2. The input device according to claim 1, further comprising: a second angle formed by the second coordinate system and a straight line from the second starting point to the second ending point when in the area. . A touch screen that inputs and outputs information;
Detecting means for detecting an angle formed by a predetermined coordinate system and a straight line from the starting point to the end point dragged when an operation is input on the touch screen;
A notification means for notifying the angle range corresponding to the angle by voice;
After the voice notification by the notification means, when movement of the finger is detected in the counterclockwise direction or the clockwise direction around the starting point, the angle range detected by the detection means is adjacent to the direction. An angle input device comprising correction means for correcting the angle range. A touch screen that inputs and outputs information;
Display processing means for providing a plurality of angle ranges in a plurality of directions from the center around a predetermined point in a predetermined display area of the touch screen, and displaying the center and the angle range on a screen;
A detection means for detecting an angle formed by a predetermined coordinate system and a straight line from the start point to the end point dragged when an operation is input on the touch screen;
The display processing means changes the display mode of the center when the starting point is detected, and changes the display mode of the angle range corresponding to the angle when the end point is detected. Input device.   The angle input device according to claim 6, wherein the display area is provided in an area different from the input area for the operation.   The program which makes a computer function as each means which comprises the input device of any one of Claims 1 thru | or 4.

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