JP2017117014A - Input program, input device, and input method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an input program for improving accuracy of inputting a symbol using a touch panel, an input device, and an input method.SOLUTION: An input device 101 outputs a character corresponding to a combination of a press-input position and a press-input moving direction, when a press-input moving distance on a touch panel 102 is equal to or larger than a first threshold 111. When a user performs deletion operation due to a false determination, the input device 101 receives the deletion of the output character, and records a history 121. The input device 101 receives a new press input on the touch panel 102, and determines whether to correct the first threshold 111, on the basis of the history 121, and a position, moving distance, and moving direction of the new press input. The input device 101 corrects the first threshold 111, on the basis of the history 121, when the first threshold 111 is determined to be corrected.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an input program, an input device, and an input method.

  Conventionally, there is a technique for inputting a symbol such as a character corresponding to an accepted operation by accepting a tap operation that is an operation of tapping the touch panel once or a flick operation that slides while touching the touch panel. As a related prior art, for example, a CPU (Central Processing Unit) that receives position information indicating a position pressed from a touch panel and transmits one character specified by calculation as character information has one pressing operation. There is a technique for specifying one character from position information obtained from the start to the end. In addition, it is determined whether the hand holding the terminal housing is the left hand or the right hand, the flick determination threshold is determined based on the detection position of the touch operation and the determination result of the hand, and the movement distance and threshold of the finger during the touch operation There is a technique for determining whether or not the touch operation is a flick operation based on the comparison result. In addition, the type of touch operation on the touch panel is determined using the touch operation determination information table, it is determined whether or not the determined type of touch operation is incorrect. Some record that it is recognition. In addition, a key press was detected with a value obtained by using a ratio between a value obtained based on a plurality of previous press intervals and a value based on a press interval including a press interval other than the previous press intervals. There is a technique for updating a predetermined time used for determining a character by comparing with an elapsed time.

JP 2008-282380 A JP 2014-170498 A JP2013-191175A JP 2011-28429 A

  However, according to the prior art, there are cases where the input accuracy when performing symbol input using the touch panel cannot be ensured. For example, if the user has a habit of shortening the moving distance of the flick operation, the flick operation is erroneously determined as a tap operation, and the input accuracy is deteriorated. In addition, even if the user tries to improve the input accuracy by correcting the threshold value for distinguishing the flick operation from the tap operation, the user notices the erroneous determination, deletes the input symbol, and re-inputs. It cannot be distinguished from a case of retyping due to a simple input mistake or rework. Therefore, the trigger for correcting the threshold value cannot be specified, and the threshold value suitable for a certain user cannot be corrected.

  In one aspect, an object of the present invention is to provide an input program, an input device, and an input method that can improve the accuracy of symbol input using a touch panel.

  According to one aspect of the present invention, if the movement distance of the pressing input on the touch panel is equal to or greater than a predetermined threshold, a symbol corresponding to the combination of the position of the pressing input and the moving direction of the pressing input is output. If it is less than the threshold value, a symbol corresponding to the position is output, and when deletion of the output symbol is accepted, at least one of position, moving distance and moving direction is included in association with the symbol In response to receiving a new pressing input on the touch panel after recording the history, the recorded history and information corresponding to the information contained in the history of the position, moving distance, and moving direction of the new pressing input An input program that corrects the predetermined threshold based on the history when it is determined whether or not the predetermined threshold should be corrected based on the history, and an input device; Force method is proposed.

  According to one embodiment of the present invention, there is an effect that accuracy of symbol input using a touch panel can be improved.

FIG. 1 is an explanatory diagram illustrating an operation example of the input device 101 according to the present embodiment. FIG. 2 is an explanatory diagram illustrating a hardware configuration example of the tablet terminal 200. FIG. 3 is an explanatory diagram illustrating a functional configuration example of the tablet terminal 200. FIG. 4 is an explanatory diagram illustrating an example of touch panel area division. FIG. 5 is a flowchart (part 1) illustrating an example of the operation processing procedure. FIG. 6 is a flowchart (part 2) illustrating an example of the operation processing procedure. FIG. 7 is a flowchart illustrating an example of a character identification processing procedure. FIG. 8 is a flowchart illustrating an example of a statistical value update processing procedure. FIG. 9 is a flowchart illustrating another example of the statistical value update processing procedure. FIG. 10 is a flowchart illustrating an example of a character recording processing procedure. FIG. 11 is an explanatory diagram showing an example of the contents stored in the input character recording unit 311. FIG. 12 is a flowchart illustrating an example of a character display processing procedure. FIG. 13 is an explanatory diagram illustrating a display example of the touch panel 102. FIG. 14 is a flowchart illustrating an example of a character deletion processing procedure. FIG. 15 is a flowchart illustrating an example of a cursor movement processing procedure. FIG. 16 is a flowchart illustrating an example of the confirmation processing procedure. FIG. 17 is a flowchart illustrating an example of the determination correction processing procedure. FIG. 18 is an explanatory diagram showing conditions A, B, and C. FIG. 19 is an explanatory diagram (part 1) illustrating a series of operation examples of character correction. FIG. 20 is an explanatory diagram (part 2) of a series of operation examples of character correction. FIG. 21 is an explanatory diagram (part 3) of a series of operation examples for character correction. FIG. 22 is an explanatory diagram (part 4) illustrating a series of operation examples of character correction. FIG. 23 is an explanatory diagram (part 5) illustrating a series of operation examples of character correction. FIG. 24 is a graph showing an example of the moving distance of the pressed position of a certain user. FIG. 25 is a graph showing an example of the moving distance of the pressed position of another user.

  Exemplary embodiments of an input program, an input device, and an input method will be described in detail below with reference to the drawings.

  FIG. 1 is an explanatory diagram illustrating an operation example of the input device 101 according to the present embodiment. An input device 101 illustrated in FIG. 1 is a computer that inputs a symbol based on a tap operation that is an operation of tapping the touch panel 102 once or a flick operation that allows the user to slide while touching the touch panel 102. Any symbol can be input, for example, a character that is a symbol for writing a language, a punctuation mark indicating a character delimiter, a delimiter symbol such as a punctuation mark, a symbol indicating a unit, a “+” indicating subtraction, and a subtraction Mathematical symbols such as “−”, pictograms, and the like. In the following description, it is assumed that the input symbol is a character.

  In addition, the input device 101 may include the touch panel 102 or may receive a start point and an end point of a pressed position pressed on the touch panel 102 from a computer having the touch panel 102. In the present embodiment, the input device 101 is assumed to have a touch panel 102. Examples of the computer having the touch panel 102 include a tablet terminal and a smartphone.

  Whether the operation is a tap operation or a flick operation can be determined by determining whether the moving distance from the start point to the end point of the pressed position on the touch panel 102 is equal to or greater than a predetermined threshold. Hereinafter, the predetermined threshold is referred to as a first threshold 111. For example, the first threshold value 111 is determined based on the degree of deviation of the finger position when the finger is pressed and raised.

  However, the above-described degree varies depending on the user who operates the touch panel 102 and the environment in which the touch panel 102 is used. Therefore, the initial setting may be a value that is not appropriate for each user. For example, depending on the user, there are more false determinations that the user moves his / her finger with the intention of a tap operation and that it is determined as a flick operation, and conversely that the intention of the flick operation is determined as a tap operation.

  As a method for dynamically changing the threshold value for discriminating between the flick operation and the tap operation, for example, a method for determining the threshold value based on the discrimination result of the holding hand is conceivable. However, since it is impossible to determine whether re-correction corrects a misjudgment or a user's mistyping, the threshold cannot be dynamically corrected for each individual.

  In addition, with regard to toggle input for sequentially changing characters to be input at each tap, a method of monitoring a user's keystroke operation and setting a threshold value for each user can be considered. However, in the case of input by flick operation, there are cases where the user corrects and inputs characters, not only when the tap and flick are recognized incorrectly, but also when the user himself / herself makes a mistake. Since these two cases cannot be distinguished from each other, the threshold value cannot be dynamically corrected for each individual regarding the input by the flick operation. Further, the user may not only correct immediately after the erroneous determination, but also may notice and correct the error after continuously inputting several characters. In this case, with the method of monitoring the user's keystroke operation for toggle input that sequentially changes the characters to be input at each tap and setting a threshold value for each user, it is not possible to detect a pattern to be corrected collectively after inputting several characters. .

  Therefore, in this embodiment, when it is determined that the first threshold value 111 should be corrected from the history at the time of input and re-input when the input character by flick operation or tap operation is deleted and re-input, A method of correcting the threshold value 111 will be described.

  An operation example of the input device 101 will be described with reference to FIG. In the example of FIG. 1, a pattern in which the user u notices an erroneous determination when one character is input and is corrected will be described. A pattern to be corrected collectively after inputting several characters will be described with reference to FIGS. As shown in FIG. 1, the input device 101 displays a software keyboard display area 103 and an output character display area 104 on the touch panel 102. The software keyboard display area 103 is divided into a plurality of areas. As described above, the input device 101 can input more types of characters by dividing the image into a plurality of areas as compared to a case where the image is not divided. However, when the external application software that uses the input characters restricts the types of characters that can be input in advance, the input device 101 does not divide the area and responds to the touch operation and the flick operation. A format that outputs characters may also be used.

  As indicated by (1) in the left diagram of FIG. 1, the input device 101 determines the position of the press input and the direction of movement of the press input if the movement distance of the press input on the touch panel 102 is equal to or greater than the first threshold 111. Output the character corresponding to the combination. Further, if the moving distance is less than the first threshold 111, the input device 101 outputs a character corresponding to the position of the pressing input. In the example of FIG. 1, it is assumed that the first threshold 111 is 15 [number of pixels]. In the example of FIG. 1, the input device 101 outputs “ki” when a left flick operation is accepted in the “ka” area in the software keyboard display area 103, and performs a tap operation in the “ka” area. If "" is received, "ka" is output. Further, in the example shown in (1) of FIG. 1, the user u intends to perform a flick operation in the left direction, but the moving distance is 10 [number of pixels], which is smaller than the first threshold 111. An example determined to be a tap operation is shown.

  Next, when the user u notices an erroneous determination and performs a deletion operation, the input device 101 accepts the deletion of the output character, as indicated by (2) in the center diagram of FIG. The method for accepting the deletion of characters may be a tap operation on an area on the touch panel 102 or a switch or button of the input device 101 may be pressed.

  Then, as indicated by (3) in the center diagram of FIG. 1, in response to receiving the deletion of the output character, the input device 101 associates the output character with the position of the press input, the moving distance, A history 121 including information on at least one of the moving directions is recorded. In the example of (3) in FIG. 1, the input device 101 records in the history 121 all the positions of the press input, the moving distance, and the moving direction. In the example of (3) in FIG. 1, the input device 101 records the character “ka” corresponding to the position of the pressing input as the position of the pressing input.

  Next, as indicated by (4) in the right diagram of FIG. 1, the input device 101 accepts a new pressing input on the touch panel 102. In (4) of FIG. 1, the input device 101 accepts a left-side pressing input with a moving distance longer than the first threshold 111 by the user u.

  Then, as indicated by (5) in the right diagram of FIG. 1, the input device 101 determines that the history 121 and the position, moving distance, and moving direction of the new pressing input are received in response to receiving the new pressing input. Based on the above, it is determined whether or not the first threshold value 111 should be corrected. Specifically, the input device 101 corrects the first threshold value 111 based on the history 121 and information corresponding to information included in the history 121 among the position, movement distance, and movement direction of a new pressing input. It is determined whether or not. In the example of FIG. 1, a determination method in the case where the history 121 has all positions, movement distances, and movement directions will be described. 3 will be described.

  For example, the input device 101 determines that the first threshold value 111 should be corrected when all of the following four conditions are satisfied. The first condition is that the position of the history 121 and the position of a new pressing input are the same. The second condition is that the movement direction of the history 121 matches the movement direction of the new press input. The third condition is that the movement distance of the history 121 is less than the first threshold value 111. The fourth condition is that the moving distance of the new pressing input is the first threshold 111 or more. The case where all of these four conditions are satisfied is a case where the user u intends to perform the flick operation, but there is a possibility that the performed flick operation is too short and is determined to be a tap operation. In the example of (5) in FIG. 1, all four conditions are satisfied, and the input apparatus 101 determines that the first threshold value 111 should be corrected.

  Next, as indicated by (6) in the right diagram of FIG. 1, when the input device 101 determines that the first threshold value 111 should be corrected, the input device 101 corrects the first threshold value 111 based on the history 121. To do. For example, the input device 101 calculates the second threshold 112 as a candidate value for correcting the first threshold 111 based on the movement distance of the pressing input, and the first threshold is the second threshold 112. The first threshold 111 may be corrected by updating 111. A specific calculation example of the second threshold value 112 will be described with reference to FIGS. 3, 8, 9, and the like. In the example of FIG. 1, the movement distance of the pressing input that the user u intended to perform the flick operation is performed. Therefore, the input device 101 calculates 9 as a value obtained by subtracting 1 from 10 as a predetermined value. In the example of (6) in FIG. 1, the second threshold 112 is calculated as 9, and the input apparatus 101 corrects the first threshold 111 to 9. Thereby, the input apparatus 101 can correct | amend a threshold value appropriately, when the user u notices the misjudgment of operation.

  In the above description, an example in which the input device 101 includes the touch panel 102 has been described, but the present invention is not limited to this. For example, in a thin client environment including a server and a tablet terminal, the input device 101 is a server, and the server receives the start point and end point of the pressed position from the tablet terminal, performs the processing described in FIG. May be sent to the tablet terminal. Next, a hardware configuration when the input device 101 is a tablet terminal will be described with reference to FIG.

(Hardware configuration example of tablet terminal 200)
FIG. 2 is an explanatory diagram illustrating a hardware configuration example of the tablet terminal 200. In FIG. 2, the tablet terminal 200 includes a CPU 201, a ROM (Read Only Memory) 202, a RAM (Random Access Memory) 203, a disk drive 204, a disk 205, a communication interface 206, and a touch panel 102. . Further, the CPU 201 to the disk drive 204, the communication interface 206, and the touch panel 102 are connected to each other by a bus 207.

  Here, the CPU 201 is an arithmetic processing device that controls the entire tablet terminal 200. The ROM 202 is a non-volatile memory that stores programs such as a boot program. A RAM 203 is a volatile memory used as a work area for the CPU 201. The disk drive 204 is a control device that controls reading and writing of data with respect to the disk 205 in accordance with the control of the CPU 201. The disk 205 stores data written under the control of the disk drive 204. As the disk drive 204, for example, a magnetic disk drive, a solid state drive, or the like can be adopted. For example, when the disk drive 204 is a magnetic disk drive, the disk 205 can be a magnetic disk. When the disk drive 204 is a solid state drive, a semiconductor memory formed by a semiconductor element, that is, a so-called semiconductor disk can be used as the disk 205.

  The communication interface 206 controls a network and an internal interface, and is a control device that controls input / output of data from other devices. Specifically, the communication interface 206 is connected to another device via a network through a communication line.

  The touch panel 102 is a device that combines a sensor that detects a tap operation or a flick operation by the user u and a display that displays data such as a document, an image, and function information including a cursor, an icon, or a tool box. Specifically, the sensor is arranged on the display. The sensor is a sensor that employs, for example, a resistance film method, a surface type or a projection type capacitance method. As the display, for example, a TFT (Thin Film Transistor) liquid crystal display can be adopted.

(Example of functional configuration of tablet terminal 200)
FIG. 3 is an explanatory diagram illustrating a functional configuration example of the tablet terminal 200. The tablet terminal 200 has a control unit 300. The control unit 300 includes an operation processing unit 301, a calculation unit 302, and a determination correction unit 303. The operation processing unit 301 includes an output unit 304 and a recording unit 305. In addition, the determination correction unit 303 includes a determination unit 306 and a correction unit 307. The control unit 300 realizes the functions of the respective units when the CPU 201 executes a program stored in the storage device. Specifically, the storage device is, for example, the ROM 202, the RAM 203, the disk 205, etc. shown in FIG. The processing results of each unit are stored in the register of the CPU 201, the cache memory of the CPU 201, the RAM 203, and the like.

  The tablet terminal 200 can access the first threshold value 111, the second threshold value 112, the input character recording unit 311, and the deleted character recording unit 312. The first threshold value 111, the second threshold value 112, the input character recording unit 311, and the deleted character recording unit 312 are stored in a storage device such as the RAM 203 and the disk 205. The input character recording unit 311 stores information related to the input character. The deleted character recording unit 312 stores information regarding the deleted character. The record recorded in the deleted character recording unit 312 corresponds to the history 121 shown in FIG.

  The operation processing unit 301 performs a flick operation, a tap operation determination, and a character specification using the first threshold value 111. Further, the operation processing unit 301 updates the input character recording unit 311 and records in the deleted character recording unit 312 according to the deletion operation.

  Next, the output unit 304 and the recording unit 305 that are functions of a part of the operation processing unit 301 will be described. In the following description, a function when the user u notices an erroneous determination in a state where one character is input will be described. The output unit 304 outputs a character corresponding to the combination of the position of the pressing input and the moving direction of the pressing input if the moving distance of the pressing input on the touch panel 102 is the first threshold 111 or more. If it is less than the threshold 111, the character corresponding to the position is output.

  In response to receiving the deletion of the output character, the recording unit 305 deletes the record including at least one of the information of the position of the press input, the moving distance, and the moving direction in association with the character. Recorded in the unit 312.

  Further, in response to receiving the deletion of the output character, the recording unit 305 may record a record including the following information in the deleted character recording unit 312 in association with the output character. The record includes an area corresponding to the position among a plurality of areas obtained by dividing the touch panel 102, a comparison result of the first threshold value 111 and the movement distance, and a movement direction. The comparison result of the movement distances included in the first threshold 111 and the deleted character recording unit 312 is referred to as “flick determination of the deleted character recording unit 312”. If the moving distance is greater than or equal to the first threshold 111, the flick determination of the deleted character recording unit 312 is true. If the moving distance is less than the first threshold 111, the flick determination of the deleted character recording unit 312 is false. Suppose that

  Further, the recording unit 305 may further record a record including the moving distance in the deleted character recording unit 312 in response to receiving the deletion of the output character.

  Further, in response to accepting the deletion of the character, the recording unit 305 further records a record including the comparison result of the second threshold value 112 and the movement distance calculated by the calculation unit 302 in the deleted character recording unit 312. May be. The comparison result of the movement distances included in the second threshold 112 and the deleted character recording unit 312 is referred to as “new flick determination of the deleted character recording unit 312”. If the moving distance is greater than or equal to the second threshold 112, the new flick determination of the deleted character recording unit 312 is true. If the moving distance is less than the second threshold 112, the new flick determination of the deleted character recording unit 312 is determined. Is false.

  The calculation unit 302 calculates a statistic and sequentially updates the second threshold value 112. Specifically, the calculation unit 302 calculates the second threshold 112 based on the movement distance of the pressing input.

  In addition, when a plurality of pressing inputs on the touch panel 102 are performed, the calculation unit 302 is based on the average value and the standard deviation of the moving distances that are equal to or more than the first threshold 111 among the moving distances of the plurality of pressing inputs. A first value is calculated. Further, the calculation unit 302 may calculate the second value based on the average value and the standard deviation of the movement distances that are less than the first threshold 111 among the movement distances of the plurality of pressing inputs. Then, the calculation unit 302 calculates the second threshold 112 based on the first value and the second value. For example, the calculation unit 302 calculates an average value of the first value and the second value as the second threshold value 112. Here, the standard deviation may be a sample standard deviation or a population standard deviation. The calculation unit 302 may use the median instead of the average value, or may use the quartile deviation instead of the standard deviation.

  The determination correction unit 303 executes determination correction processing. The determination unit 306 and the correction unit 307 that are part of the function of the determination correction unit 303 will be described. For example, it is assumed that the tablet terminal 200 receives a new pressing input on the touch panel 102. In response to accepting a new pressing input, the determination unit 306 is based on the recorded deleted character recording unit 312 and information corresponding to the information included in the deleted character recording unit 312 of the input character recording unit 311. It is determined whether or not the first threshold value 111 should be corrected. The input character recording unit 311 records the position of the new press input, the moving distance, and the moving direction. Further, the determination unit 306 may determine before outputting a character by a new pressing input, or may determine after outputting.

  Here, an example of a determination method in the case where the information included in the deleted character recording unit 312 is any one of the position of pressing input, the moving distance, and the moving direction and the deleted character will be described. First, the case of the position of pressing input and the deleted character will be described. In this case, the determination unit 306 matches the position of the pressing input included in the deleted character recording unit 312 with the position of the new pressing input, and the deleted character and the character output by the new pressing input. Are different, it is determined that the first threshold value 111 should be corrected. Such a process is effective, for example, when the movement direction of the flick operation is limited to only one direction.

  Next, the case of the movement distance and the deleted character will be described. In this case, the determination unit 306 determines whether the moving distance included in the deleted character recording unit 312 is greater than or equal to the first threshold 111 and whether the new pressing input moving distance is greater than or equal to the first threshold 111. When the true / false value is different, it is determined that the first threshold value 111 should be corrected. Such a process is effective, for example, when there is only one area.

  Next, the case of the movement distance and the deleted character will be described. In this case, the determination unit 306 differs between the deleted character and the character output by the new pressing input, and the moving direction included in the deleted character recording unit 312 matches the moving direction of the new pressing input. In this case, it is determined that the first threshold value 111 should be corrected. Such a process is effective, for example, when there is only one area.

  In addition, the determination unit 306 includes the deleted character recording unit 312 and the region corresponding to the position of the new pressing input among the plurality of regions, the comparison result of the first threshold value 111 and the moving distance of the new pressing input, and the new It may be determined whether or not correction is to be made based on the movement direction of the pressing input. Here, the comparison result of the movement distance of the new pressing input included in the first threshold 111 and the input character recording unit 311 is referred to as “flick determination of the input character recording unit 311”. If the moving distance is greater than or equal to the first threshold 111, the flick determination of the input character recording unit 311 is true. If the moving distance is less than the first threshold 111, the flick determination of the input character recording unit 311 is false. Suppose that

  The determination unit 306 also includes the deleted character recording unit 312 and a region corresponding to the position of the new pressing input among the plurality of regions, the flick determination of the input character recording unit 311, the moving direction of the new pressing input, Based on the above, it may be determined whether or not the first threshold value 111 should be corrected.

  The determination unit 306 corrects the first threshold value 111 when the area included in the deleted character recording unit 312 is the same as the area corresponding to the position of the new pressing input and the condition A is satisfied. It may be determined that it should be. The contents of condition A will be described with reference to FIG.

  The determination unit 306 corrects the first threshold value 111 when the area included in the deleted character recording unit 312 is the same as the area corresponding to the position of the new pressing input and the condition B is satisfied. It may be determined that it should be. The contents of condition B will be described with reference to FIG.

  When it is determined that the first threshold value 111 should be corrected, the correction unit 307 corrects the first threshold value 111 based on the deleted character recording unit 312. Here, a description will be given of a correction method in the case where the information included in the deleted character recording unit 312 is any one of the position of pressing input, the moving distance, and the moving direction, and the deleted character. First, the case of the position of the press input and the deleted character, and the case of the movement direction and the deleted character will be described. Here, based on the deleted character, it can be determined whether the deleted character is a character corresponding to a tap operation or a character corresponding to a flick operation. If the deleted character is a character corresponding to the tap operation, since the operation was intended to be performed by the user u, the correction unit 307 corrects the first threshold value 111 in the direction of decreasing. . Similarly, if the deleted character is a character corresponding to the flick operation, the operation is intended to be performed by the user u, and the correction unit 307 increases the first threshold value 111. To correct.

  Further, when it is determined that the first threshold value 111 should be corrected, the correction unit 307 may correct the first threshold value 111 based on the moving distance included in the deleted character recording unit 312. For example, if the deleted character is a character corresponding to the tap operation, since the operation was intended to be performed by the user u, the correction unit 307 includes the movement distance included in the deleted character recording unit 312. A smaller value is corrected as the first threshold 111. Similarly, if the deleted character is a character corresponding to the flick operation, since the operation was intended to be performed by the user u, the correction unit 307 includes the movement included in the deleted character recording unit 312. A value larger than the distance is corrected as the first threshold 111.

  Further, when it is determined that the first threshold value 111 should be corrected, the correction unit 307 may correct the first threshold value 111 by updating the first threshold value 111 with the second threshold value 112.

  Next, in the following description, a function when the user u notices an erroneous determination in a state where several characters are input will be described. In this case, when a plurality of pressing inputs on the touch panel 102 are performed, the output unit 304 outputs a character corresponding to each pressing input of the plurality of pressing inputs.

  In response to receiving the deletion of the character corresponding to each pressing input, the recording unit 305 associates the character corresponding to each pressing input with the position of each pressing input, the moving distance of each pressing input, Records including the moving direction of each pressing input are recorded in the deleted character recording unit 312.

  In response to receiving a plurality of new pressing inputs on touch panel 102, determination unit 306 receives a character corresponding to each pressing input associated with recorded deleted character recording unit 312 and a plurality of new pressing inputs. It is determined whether there is a character that is different from the character output by. If there is a different character, the determination unit 306 compares the deleted character recording unit 312 and the region corresponding to the positions of the plurality of new pressing inputs, the comparison result of the first threshold 111 and the movement distances of the plurality of new pressing inputs. Based on the movement directions of a plurality of new pressing inputs, it is determined whether or not correction is to be performed.

  Also, the determination unit 306 determines whether there is a different character between the character corresponding to each pressing input of the deleted character recording unit 312 and the character output by a plurality of new pressing inputs. If there is a different character, the determination unit 306 corresponds to each pressing input of the deleted character recording unit 312 out of an area corresponding to the position of each pressing input of the deleted character recording unit 312 and a plurality of new pressing inputs. It is determined whether all the areas corresponding to the position of the new pressing input are the same. If all are the same, the determination unit 306 should correct the first threshold 111 if any one of the condition A, the condition B, or the condition C is satisfied for each pressing input of the deleted character recording unit 312. judge. The contents of the condition C will be described with reference to FIG.

  The correction unit 307 will not be described because the process does not change between the case where the user u notices an erroneous determination when one character is input and the case where the user u notices an erroneous determination while several characters are input.

  FIG. 4 is an explanatory diagram illustrating an example of touch panel area division. FIG. 4 shows an example in which the display area of the touch panel 102 is divided into 4 × 4 16 areas. In the example of FIG. 4, 10 of the 16 divided areas are character input key areas for Japanese 50 sounds.

  The tablet terminal 200 identifies a line of 50 sounds at the start of pressing a Japanese 50-sound character input key area. Then, the tablet terminal 200 specifies the characters in the “a” row by the tap operation, and specifies the characters in the “i” row to the “o” row by the flick operation. Specifically, the tablet terminal 200 identifies a character “I” by flicking leftward, identifies a character “U” by flicking upward, and flicks rightward. The character of the “e” row is specified with, and the character of the “o” row is specified by flicking downward. Area division and character assignment are examples, and other area division and assignment methods are possible. For example, characters other than Japanese 50 sounds may be assigned to the character input area.

  Further, in FIG. 4, in the divided 16 areas, in addition to the character input key area of Japanese 50 syllabary, the delete key area indicated as “delete” and the cursor movement key area indicated as “→” and “←” , A confirmation key area labeled “confirm” is assigned. By performing a tap operation to the deletion key area, the cursor movement key area, and the confirmation key area, a character deletion process, a cursor movement process, and an input character string confirmation process are executed. The assignment of the deletion process, the cursor movement process, and the confirmation process is an example, and there may be other assignment methods. Further, the operation for starting these processes may be implemented using an external switch, a button, or the like included in the tablet terminal 200 instead of an operation on the touch panel.

  FIG. 5 is a flowchart (part 1) illustrating an example of the operation processing procedure. FIG. 6 is a flowchart (part 2) illustrating an example of the operation processing procedure. The operation processing unit 301 acquires a pressing start position and a pressing end position (step S501). Next, the operation processing unit 301 identifies an area to which the pressing start position belongs (step S502). Then, the operation processing unit 301 determines whether or not the identified area is a character input key area (step S503). When the specified area is a character input key area (step S503: Yes), the operation processing unit 301 executes a character specifying process (step S504). Next, the operation processing unit 301 performs a statistical value update process (step S505). Then, the operation processing unit 301 executes a character recording process (step S506). Next, the operation processing unit 301 performs a character display process (step S507). Then, the operation processing unit 301 executes determination correction processing (step S508). After the process of step S508 ends, the operation processing unit 301 ends the operation process.

  On the other hand, when the specified area is not a character input key area (step S503: No), the operation processing unit 301 determines whether the specified area is a deletion key area (step S601). If the identified area is a deletion key area (step S601: Yes), the operation processing unit 301 executes a character deletion process (step S602).

  On the other hand, when the specified area is not the delete key area (step S601: No), the operation processing unit 301 determines whether the specified area is a cursor movement key area (step S603). When the specified area is a cursor movement key area (step S603: Yes), the operation processing unit 301 executes a cursor movement process (step S604).

  On the other hand, when the specified area is not the cursor movement key area (step S603: No), the operation processing unit 301 determines whether or not the specified area is the confirmation key area (step S605). When the identified area is the confirmation key area (step S605: Yes), the operation processing unit 301 executes the confirmation process (step S606).

  After completion of any one of step S602, step S604, and step S606, or when the specified area is not a fixed key area (step S605: No), the operation processing unit 301 ends the operation process.

  FIG. 7 is a flowchart illustrating an example of a character identification processing procedure. The character specifying process is a process for specifying an input character. The operation processing unit 301 calculates a movement distance and a movement direction of up / down / left / right from the pressing start position and the pressing end position (step S701). Here, in the present embodiment, the moving direction is four directions, but is not limited to this, and may be eight directions including an oblique direction, for example.

  Next, the operation processing unit 301 determines whether or not the movement distance is equal to or greater than the first threshold 111 (step S702). When the movement distance is greater than or equal to the first threshold 111 (step S702: Yes), the operation processing unit 301 determines that the operation of the user u is a flick operation (step S703). Then, the operation processing unit 301 identifies the character assigned to each moving direction of the flick operation in the corresponding character input area (step S704).

  On the other hand, when the movement distance is less than the first threshold 111 (step S702: No), the operation processing unit 301 determines that the operation of the user u is a tap operation (step S705). Then, the operation processing unit 301 identifies the character assigned to the tap operation in the corresponding character input key area (step S706).

  After the process of step S704 or step S706 ends, the operation processing unit 301 ends the character identification process. In the processing of step S702, step S703, and step S705, the operation processing unit 301 determines that the flick operation is performed when the movement distance is greater than the first threshold 111, and the movement distance is equal to or less than the first threshold 111. Alternatively, it may be determined as a tap operation.

  Next, two examples of statistical value update processing will be described with reference to FIGS.

  FIG. 8 is a flowchart illustrating an example of a statistical value update processing procedure. The calculating unit 302 determines whether or not the operation of the user u is a tap operation (step S801). When the operation of the user u is a tap operation (step S801: Yes), the calculation unit 302 calculates the average value of the movement distance of the tap operation in a past fixed period (step S802). Next, the calculation unit 302 calculates the variance and standard deviation of the movement distance of the tap operation in the past certain period (step S803).

  Then, the calculating unit 302 stores the average value + 3 × standard deviation as the second threshold value 112 (step S804). Here, in the example of FIG. 8, a value sufficiently larger than the finger displacement in the normal tap operation of the user u is stored as the second threshold value 112. In addition, the calculation unit 302 may calculate the second threshold 112 using a statistic regarding the set of flick operations. An example of using statistics regarding a set of flick operations will be described with reference to FIG.

  After the process of step S804 is completed, or when the operation of the user u is not a tap operation (step S801: No), the calculation unit 302 ends the statistical value update process.

  FIG. 9 is a flowchart illustrating another example of the statistical value update processing procedure. The calculation unit 302 determines whether or not the operation of the user u is a tap operation (step S901). When the operation of the user u is a tap operation (step S901: Yes), the calculation unit 302 calculates an average value of the movement distance of the tap operation in a past fixed period (step S902). Next, the calculation unit 302 calculates the variance and standard deviation of the movement distance of the tap operation in the past fixed period (step S903).

  When the operation of the user u is not a tap operation (step S901: No), the calculation unit 302 determines whether the operation of the user u is a flick operation (step S904). When the operation of the user u is a flick operation (step S904: Yes), the calculation unit 302 calculates an average value of the movement distance of the flick operation in a past fixed period (step S905). Next, the calculation unit 302 calculates the variance and standard deviation of the movement distance of the flick operation in a past fixed period (step S906).

  After the process of step S903 is completed or after the process of step S906 is completed, the calculation unit 302 calculates the average value of the tap operation + 3 × the standard deviation of the tap operation (step S907). The value calculated in step S907 corresponds to the second value described with reference to FIG.

  Further, the calculation unit 302 calculates the average value of the flick operation−3 × the standard deviation of the flick operation (step S908). The value calculated in step S908 corresponds to the first value described in FIG.

  In addition, regarding the processing of step S907 and step S908, the calculation unit 302 may calculate the average value of the tap operation + 2 × the standard deviation of the tap operation and the average value of the flick operation−2 × the standard deviation of the flick operation. . Then, the calculation unit 302 stores the average value of both values as the second threshold value 112 (step S909).

  After the process of step S909 ends, or when the operation of the user u is not a flick operation (step S904: No), the calculation unit 302 ends the statistical value update process.

  In addition, regarding the statistical value update processing shown in FIGS. 8 and 9, the tap operation and the flick operation when the user u inputs a character deleted later is excluded from the target of calculating the moving distance statistical value. desirable.

  FIG. 10 is a flowchart illustrating an example of a character recording processing procedure. The operation processing unit 301 acquires the cursor position of the input character recording unit 311 (step S1001). Next, the operation processing unit 301 creates data having a set of five items “input character, region ID (Identify), moving distance, moving direction, and flick determination” for the specified character (step S1002). Each item will be described with reference to FIG.

  Then, the operation processing unit 301 inserts or adds the created data immediately after the cursor position (step S1003). Next, the operation processing unit 301 moves the cursor position one place later (step S1004). After the process of step S1004 is completed, the operation processing unit 301 ends the character recording process.

  FIG. 11 is an explanatory diagram showing an example of the contents stored in the input character recording unit 311. FIG. 11 shows an example of the stored contents of the input character recording unit 311 divided into (a) to (c) of FIG. The input character recording unit 311 stores the five items created in step S1002 as one record. Further, one record in the input character recording unit 311 indicates an input character for one flick operation or tap operation.

  The five items will be specifically described. The input character item is an item in which an input character is stored. The area ID item stores information for identifying the pressed area. The moving distance item stores a value indicating the pressed moving distance in units of pixels. The movement direction item stores information indicating the direction from the start point of the pressed position to the end point of the pressed position. The flick determination item stores a true / false value of “movement distance ≧ first threshold 111”. If the flick determination is true, it indicates that it is determined that the tablet terminal 200 is a flick operation. On the other hand, if the flick determination is false, it indicates that the tablet terminal 200 has determined that it is a tap operation.

  An input character recording unit 311 shown in FIG. 11A has a record 1101_1. Further, (a) of FIG. 11 indicates that the cursor is on the right side of the input character indicated by the record 1101_1. The record 1101_1 indicates that the tap operation has been performed on the area having the area ID “ka” and the input character is identified as “ka”.

  FIG. 11B shows the stored contents and cursor position of the input character recording unit 311 when the character “ka” is specified by the tap operation from the state of FIG. Specifically, in FIG. 11B, the input character recording unit 311 adds the record 1101_2 related to the input character “ka” as the next to the record 1101_1 and the input character “ka” indicated by the record 1101_2. Indicates that the cursor is on the right side of.

  FIG. 11C shows the stored contents and cursor position of the input character recording unit 311 when the character “I” is specified by the flick operation from the state of FIG. 11B. Specifically, in FIG. 11C, the input character recording unit 311 adds the record 1101_3 related to the input character “I” as the next to the record 1101_2 and the input character “I” indicated by the record 1101_3. Indicates that the cursor is on the right side of.

  FIG. 12 is a flowchart illustrating an example of a character display processing procedure. The operation processing unit 301 displays a character string obtained by combining the input characters recorded in the input character recording unit 311 on the touch panel 102 (step S1201). Next, the operation processing unit 301 displays a symbol representing the cursor at the cursor position on the touch panel 102 (step S1202). After the process of step S1202, the operation processing unit 301 ends the character display process.

  FIG. 13 is an explanatory diagram illustrating a display example of the touch panel 102. In the example of FIG. 13, the touch panel 102 displays a character string “Kikai” in the display frame 1301, and further, as a symbol representing the cursor after the character “I” corresponding to the cursor position, A beam pointer 1302 is displayed.

  FIG. 14 is a flowchart illustrating an example of a character deletion processing procedure. The operation processing unit 301 determines whether there is data before the cursor position (step S1401). If there is data before the cursor position (step S1401: Yes), the operation processing unit 301 deletes the data immediately before the cursor position in the input character recording unit 311 (step S1402). Next, the operation processing unit 301 sets a determination result obtained by comparing the movement distance related to the deleted character and the second threshold value 112 as a new flick determination (step S1403). Then, the operation processing unit 301 creates a data set in which a new flick determination is added to the data set related to the deleted character (step S1404).

  Next, the operation processing unit 301 inserts the created data at the head of the deleted character recording unit 312 (step S1405). Then, the operation processing unit 301 corrects the cursor position (step S1406). Next, the operation processing unit 301 performs a character display process (step S1407). After the process of step S1407 is completed, or when there is no data before the cursor position (step S1401: No), the operation processing unit 301 ends the character deletion process.

  Here, in the present embodiment, the operation processing unit 301 performs one character deletion of the Backspace key type that deletes the character preceding the cursor position as the character deletion processing, but deletes the next character after the cursor position. Delete key type single character deletion may be used. In addition, the operation processing unit 301 may perform deletion such that the deletion operation selects and deletes a plurality of consecutive characters.

  FIG. 15 is a flowchart illustrating an example of a cursor movement processing procedure. The operation processing unit 301 confirms the direction of the cursor movement operation (step S1501). When the cursor movement operation is in the left direction (step S1501: left direction), the operation processing unit 301 determines whether or not the current cursor position is the leftmost end (step S1502). When the current cursor position is not the leftmost position (step S1502: No), the operation processing unit 301 moves the cursor position to the previous position (step S1503).

  On the other hand, when the cursor movement operation is in the right direction (step S1501: right direction), the operation processing unit 301 determines whether or not the current cursor position is the rightmost end (step S1504). When the current cursor position is not the rightmost end (step S1504: No), the operation processing unit 301 moves the cursor position one place later (step S1505).

  After the processing of step S1503 or step S1505 is completed, the operation processing unit 301 deletes the data in the deleted character recording unit 312 (step S1506). The operation processing unit 301 executes a character display process (step S1507).

  After the processing in step S1507 is completed, or when the current cursor position is the leftmost end (step S1502: Yes), or when the current cursor position is the rightmost end (step S1504: Yes), the operation processing unit 301 The cursor movement process is terminated.

  FIG. 16 is a flowchart illustrating an example of the confirmation processing procedure. The operation processing unit 301 transmits the data recorded in the input character recording unit 311 to an external application (step S1601). Next, the operation processing unit 301 deletes the data recorded in the input character recording unit 311 (step S1602). Then, the operation processing unit 301 deletes the data recorded in the deleted character recording unit 312 (step S1603). Next, the operation processing unit 301 performs a character display process (step S1604). After the process of step S1604 ends, the operation processing unit 301 ends the confirmation process.

  FIG. 17 is a flowchart illustrating an example of the determination correction processing procedure. The determination correction unit 303 determines whether there is information on one or more characters in the deleted character recording unit 312 (step S1701). If there is information of one or more characters in the deleted character recording unit 312 (step S1701: Yes), the determination correction unit 303 acquires the number of characters added to the input character recording unit 311 after the deletion operation (step S1702). Next, the determination correction unit 303 determines whether or not the acquired number of characters matches the number of characters in the deleted character recording unit 312 (step S1703).

  If the acquired number of characters matches the number of characters in the deleted character recording unit 312 (step S1703: YES), the determination correction unit 303 determines whether there is a different portion in the input character (step S1704). If there is a different part in the input character (step S1704: YES), the determination correction unit 303 determines whether or not all the area IDs match (step S1705). If all region IDs match (step S1705: YES), the determination correction unit 303 determines whether any one of the conditions A, B, and C is satisfied for all characters (step S1706). Specific contents of the conditions A, B, and C will be described with reference to FIG.

  When any one of the conditions A, B, and C is satisfied (step S1706: Yes), it is considered that the user u has noticed and corrected the erroneous determination, and the determination correction unit 303 sets the first threshold value 112 as the first. The threshold value 111 is updated (step S1707). Then, the determination correction unit 303 deletes the data recorded in the deleted character recording unit 312 (step S1708). After the process of step S1708 ends, the determination correction unit 303 ends the determination correction process.

  On the other hand, when there is no different part in the input character (step S1704: No), when there is an input character whose area ID does not match (step S1705: No), or when none of the conditions A, B, and C are satisfied (step S1706: No), it is considered that the user u has made a simple input error or retouching, and the determination correction unit 303 executes the process of step S1708.

  If there is no information of one or more characters in the deleted character recording unit 312 (step S1701: No), or if the number of acquired characters does not match the number of characters in the deleted character recording unit 312 (step S1703: No), the determination correction unit 303 The determination correction process is terminated.

  FIG. 18 is an explanatory diagram showing conditions A, B, and C. In FIG. 18, conditions A, B, and C are collectively displayed in a table 1801. Specifically, the record 1801_A indicates the content of the condition A, the record 1801_B indicates the content of the condition B, and the record 1801_C indicates the content of the condition C.

  Regarding the condition A, the tablet terminal 200 determines that the condition A is satisfied if all the four conditions are satisfied, as indicated by the record 1801_A. The first condition is that the moving direction of the input character recording unit 311 and the moving direction of the deleted character recording unit 312 match. The second condition is that the flick determination of the input character recording unit 311 is true. The third condition is that the flick determination of the deleted character recording unit 312 is false. The fourth condition is that the new flick determination of the deleted character recording unit 312 is true. When the condition A is satisfied, the user u intended to perform the flick operation, but it may be determined that the performed flick operation is too short and the tap operation is performed, and the second threshold 112 is used. In this case, the flick operation can be correctly determined.

  Regarding the condition B, as indicated by the record 1801_B, the tablet terminal 200 determines that the condition B is satisfied if all three conditions are satisfied. The first condition is that the flick determination of the input character recording unit 311 is false. The second condition is that the flick determination of the deleted character recording unit 312 is true. The third condition is that the new flick determination of the deleted character recording unit 312 is false. When the condition B is satisfied, the user u intends to perform the tap operation, but the performed tap operation may be deviated and determined to be a flick operation, and the second threshold 112 is used. In this case, it can be determined that the tap operation is correct.

  Regarding the condition C, as indicated by the record 1801_C, the tablet terminal 200 determines that the condition C is satisfied if all the two conditions are satisfied. The first condition is that the input character of the input character recording unit 311 and the input character of the deleted character recording unit 312 match. The second condition is that the flick determination of the deleted character recording unit 312 and the new flick determination of the deleted character recording unit 312 match. The case where the condition C is satisfied is a case where determination of characters that do not need to be corrected is not affected even if the second threshold 112 is used.

  Next, a series of operation examples for character correction will be described with reference to FIGS.

  FIG. 19 is an explanatory diagram (part 1) illustrating a series of operation examples of character correction. It is assumed that the first threshold 111 is 25 and the second threshold 112 is 15 at the start of state 1 shown in FIG. In state 1, three input characters “ka”, “ka”, and “i” are specified, and records 1101_1 to 1101-3 corresponding to the input characters are recorded in the input character recording unit 311. The user u was supposed to input “ki”, “ka”, and “i”, but the length of the flick, that is, the moving distance from the start to the end of pressing is shorter than the first threshold value 111. It has been determined.

  In the state 2 shown in FIG. 19, from the state 1, the user u notices an erroneous determination and deletes one character. When the character deletion is performed, the tablet terminal 200 deletes the record 1101_3 corresponding to “I” in the input character recording unit 311 from the input character recording unit 311 and the record 1901_1 obtained by duplicating the deleted record 1101_3. 312 is added. Here, the tablet terminal 200 adds each data of the record 1101_3 and a new flick determination indicating a truth value of “movement distance ≧ second threshold 112” to the deleted character recording unit 312 as a record 1901_1.

  FIG. 20 is an explanatory diagram (part 2) of a series of operation examples of character correction. State 3 shown in FIG. 20 shows the result of further two-character deletion operations from state 2. There are no records in the input character recording unit 311, and records 1901 </ b> _ <b> 1-3 for three input characters are added to the deleted character recording unit 312.

  FIG. 21 is an explanatory diagram (part 3) of a series of operation examples for character correction. In state 4 shown in FIG. 21, from state 3, records 2101 </ b> _ <b> 1 to 3 </ b> 1 to 3 characters are added to the input character recording unit 311 by the user u retouching. When there is a record of one or more characters in the deleted character recording unit 312, the tablet terminal 200 compares the number of added characters with the number of characters in the deleted character recording unit 312, and compares them in more detail if they match. In state 4, since the number of added characters is 3 and the number of characters in the deleted character recording unit 312 is 3, the number of characters matches, so the tablet terminal 200 compares in more detail.

  FIG. 22 is an explanatory diagram (part 4) illustrating a series of operation examples of character correction. The state 5 shown in FIG. 22 is a state after determining from the state 4 that the number of characters added to the tablet terminal 200 matches the number of characters in the deleted character recording unit 312.

  For the input character shown in step S1704, the input character recording unit 311 is “Kikai” and the deleted character recording unit 312 is “Kikai”, so that the condition that there are different portions in the input character is satisfied.

  Next, the area ID shown in step S1705 is the same in the input character recording unit 311 and the deleted character recording unit 312 and satisfies the condition.

  With regard to the conditions A, B, and C shown in step S1706, regarding the records 2101_1 and 1901_1 that are the first character, the condition A is satisfied, and an erroneous determination that the flick operation is determined to be a tap operation is a second threshold value. It can be seen that it can be corrected at 112. For the records 2101_2 and 3 and the records 1901_2 and 3 which are the second and third characters, it can be seen that the condition C is satisfied, and the second threshold 112 can be determined as well as the first threshold 111.

  FIG. 23 is an explanatory diagram (part 5) illustrating a series of operation examples of character correction. State 6 shown in FIG. 23 is a state after determining from state 5 that all record pairs of input character recording unit 311 and deleted character recording unit 312 satisfy any one of comparison conditions A, B, and C. It is. The tablet terminal 200 updates the first threshold value 111 with the second threshold value 112. In addition, the tablet terminal 200 deletes the data in the deleted character recording unit 312 regardless of the determination results in steps S1704 to S1706.

  Next, using the movement distances of the pressing positions of two users, a certain user and another user, the relationship between the movement distance of the pressing position and the first threshold value 111 and the second threshold value 112 is shown in FIGS. I will explain it.

  FIG. 24 is a graph showing an example of the moving distance of the pressed position of a certain user. The graph 2401 shown in the example of FIG. 24 shows the moving distance of the pressing position of a certain user, the first threshold 111 is set to 60 [number of pixels], and the second threshold 112 is calculated by the method shown in FIG. An example is shown. Here, it is assumed that a certain user recognizes an operation with a movement distance of 0 to 39 pixels as a tap operation, and recognizes an operation with a movement distance of 40 or more pixels as a tap operation.

  The tablet terminal 200 calculates an average value and a standard deviation of the movement distance determined to be a tap operation. In the example of the graph 2401, the movement distances of 16 tap operations from 0 to 9 pixels are all regarded as 4.5. Similarly, the movement distance of eight tap operations from 10 to 19 pixels is regarded as 14.5, and the movement distance of a tap operation from 20 to 29 pixels is regarded as a movement distance of 24.5. The moving distance of the tap operation from 50 to 59 pixels is regarded as the moving distance of 54.5. Then, the tablet terminal 200 calculates the second threshold 112 as 41.6 [number of pixels]. As described above, the second threshold 112 is closer to the threshold recognized by a certain user than the first threshold 111, and is a threshold corresponding to a certain user's operation habit.

  FIG. 25 is a graph showing an example of the moving distance of the pressed position of another user. A graph 2501 shown in the example of FIG. 25 shows an example in which the movement distance of the pressed position of another user is shown, and the first threshold 111 is set to 50 [number of pixels]. Further, the graph 2501 sets the second threshold value 112 as the second threshold value 112 by calculating the average value of the two values “average value + 2 × standard deviation” in the tap operation and “average value−2 × standard deviation” in the flick operation. An example calculated as follows is shown. Here, it is assumed that another user recognizes an operation of a moving distance from 0 to 59 pixels as a tap operation, and recognizes an operation of a moving distance of 60 or more pixels as a tap operation. Further, it is assumed that each moving distance shown in the graph 2501 is calculated by the same method as the method shown in FIG.

  The tablet terminal 200 calculates “average value + 2 × standard deviation” in the tap operation as 43.8 [number of pixels], and sets “average value−2 × standard deviation” in the flick operation to 77.3 [number of pixels]. And calculate. Then, the tablet terminal 200 calculates 60.6 [number of pixels]. Thus, the second threshold value 112 is closer to the threshold value recognized by other users than the first threshold value 111, and is a threshold value corresponding to the habit of other user operations.

  As described above, when the tablet terminal 200 determines that the first threshold value 111 should be corrected from the history at the time of input and the time of re-input when the input character by the flick operation or the tap operation is deleted and re-input is performed. The first threshold value 111 is corrected. Thereby, the tablet terminal 200 can correct | amend a threshold value appropriately, when the user u notices the misjudgment of operation. And the tablet terminal 200 can improve input accuracy by correct | amending a threshold value appropriately.

  In addition, the tablet terminal 200 compares the area corresponding to the position among the plurality of areas obtained by dividing the touch panel 102 recorded in the deleted character recording unit 312, the first threshold value 111, the comparison result of the movement distance, the movement direction, and the new press Based on the input, it may be determined whether to correct. Accordingly, the tablet terminal 200 can accurately determine whether or not the user u has noticed an erroneous operation determination.

  In addition, the tablet terminal 200 may correct the first threshold 111 based on the movement distance of the pressing input. Thereby, since it can correct | amend to the value based on the moving distance where the user's u habit when the user u noticed the misjudgment of operation appeared, the 1st threshold value 111 suitable for the user u can be set.

  In addition, the tablet terminal 200 corrects the first threshold value 111 based on the area ID, flick determination, movement direction, and new flick determination of the deleted character recording unit 312 of the input character recording unit 311 and the deleted character recording unit 312. It may be determined whether or not to do so. Accordingly, the tablet terminal 200 can accurately determine whether or not the user u has noticed the erroneous determination of the operation, and can ensure that the determination can be correctly performed using the second threshold 112.

  The tablet terminal 200 may determine that the first threshold 111 should be corrected if the condition A is satisfied for the deleted character and the re-input character. As a result, the tablet terminal 200 may have been determined to be a tap operation because the user u intended to perform a flick operation but the performed flick operation is too short, and the second threshold 112 is used. Therefore, it can be correctly determined as a flick operation.

  The tablet terminal 200 may determine that the first threshold value 111 should be corrected if the condition B is satisfied for the deleted character and the re-input character. As a result, the tablet terminal 200 may have been determined to be a flick operation because the user u intends to perform a tap operation, but the performed tap operation has shifted, and the second threshold 112 is used. Therefore, it can be correctly determined as a tap operation.

  If there is a difference between the deleted character string and the re-input character string in the deleted character string and the re-input character string, the tablet terminal 200 records the input character recording unit 311 and the deleted character record. The unit 312 may be used to determine whether or not to correct. If the deleted character string and the re-input character string are the same, it is not necessary to correct the first threshold value 111. Accordingly, the tablet terminal 200 determines whether or not the first threshold value 111 should be corrected. The load applied to the determination can be suppressed.

  In addition, the tablet terminal 200 should correct the first threshold 111 when any one of the conditions A, B, and C is satisfied with respect to a pair of a deleted character string and a re-input character string. May be determined. As a result, the tablet terminal 200 can correctly determine an operation that the user u notices an erroneous determination of the operation, and corrects the first threshold value 111 to correct the character that need not be corrected. It can be ensured that the determination is not affected.

  In addition, the tablet terminal 200 calculates a first value from the average value and standard deviation determined as the tap operation, calculates a second value from the average value and standard deviation determined as the flick operation, and the first value The second threshold 112 may be calculated from the value and the second value. Thereby, since the second threshold value 112 is intermediate between the movement distance of the tap operation and the movement distance of the flick operation, the tablet terminal 200 can be corrected to the first threshold value 111 suitable for the user u.

  The input method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This input program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM (Compact Disc-Read Only Memory), a DVD (Digital Versatile Disk), etc., and is read from the recording medium by the computer. Executed. The input program may be distributed through a network such as the Internet.

  The following additional notes are disclosed with respect to the embodiment described above.

(Supplementary note 1)
If the movement distance of the press input on the touch panel is greater than or equal to a predetermined threshold, a symbol corresponding to the combination of the position of the press input and the movement direction of the press input is output, and if the movement distance is less than the predetermined threshold Outputs a symbol corresponding to the position,
In response to receiving the deletion of the output symbol, record a history including at least one of the position, the moving distance, and the moving direction in association with the symbol,
Based on the recorded history and information corresponding to information contained in the history of the position, moving distance, and moving direction of the new pressing input in response to receiving a new pressing input on the touch panel. To determine whether or not to correct the predetermined threshold,
If it is determined that the predetermined threshold should be corrected, the predetermined threshold is corrected based on the history;
An input program characterized by causing a process to be executed.

(Appendix 2) The recording process is as follows.
In response to accepting deletion of the symbol, a region corresponding to the position among a plurality of regions obtained by dividing the touch panel in association with the symbol, a comparison result of the predetermined threshold and the movement distance, Record the history including the moving direction;
The determination process is as follows:
In response to receiving a new pressing input on the touch panel, the recorded history, an area corresponding to a position of the new pressing input among the plurality of areas, the predetermined threshold value, and the new It is determined whether or not the predetermined threshold should be corrected based on the comparison result of the movement distance of the pressing input and the moving direction of the new pressing input.
The input program according to Supplementary Note 1, wherein

(Appendix 3) The recording process is as follows.
In response to accepting the deletion of the symbol, further record the history including the movement distance,
The correction process is as follows:
If it is determined that the predetermined threshold should be corrected, the predetermined threshold is corrected based on the movement distance included in the history;
The input program according to Supplementary Note 2, wherein

(Supplementary note 4)
Calculating a candidate value for correcting the predetermined threshold based on the movement distance of the pressing input,
The recording process is as follows:
In response to accepting the deletion of the symbol, further record the history including the calculated candidate value and the comparison result of the movement distance,
The determination process is as follows:
In response to receiving a new pressing input on the touch panel, the recorded history, an area corresponding to a position of the new pressing input among the plurality of areas, the predetermined threshold value, and the new Based on the comparison result of the movement distance of the pressing input and the moving direction of the new pressing input, it is determined whether or not the predetermined threshold should be corrected,
The correction process is as follows:
If it is determined that the predetermined threshold should be corrected, the predetermined threshold is corrected by updating the predetermined threshold with the candidate value;
The input program according to appendix 2 or 3, characterized by the above.

(Supplementary Note 5) The determination process is as follows.
In response to receiving a new pressing input on the touch panel, the area included in the recorded history is the same as the area corresponding to the position of the new pressing input, and the movement included in the history The direction and the moving direction of the new pressing input match, the moving distance of the new pressing input is equal to or greater than the predetermined threshold, and the predetermined threshold and the moving distance included in the history are compared. When the result indicates that the movement distance is less than the predetermined threshold, and the comparison result between the candidate value and the movement distance included in the history indicates that the movement distance is greater than or equal to the candidate value Determining that the predetermined threshold should be corrected,
The input program according to supplementary note 4, characterized in that:

(Appendix 6) The determination process is as follows.
In response to receiving a new pressing input on the touch panel, the area included in the recorded history and the area corresponding to the position of the new pressing input are the same, and the moving distance of the new pressing input Is less than the predetermined threshold value, and the comparison result of the predetermined threshold value and the moving distance included in the history indicates that the moving distance is greater than or equal to the predetermined threshold and is included in the history When the comparison result of the candidate value and the movement distance indicates that the movement distance is less than the candidate value, it is determined that the predetermined threshold should be corrected.
The input program according to appendix 4 or 5, characterized in that:

(Supplementary note 7) The output process is
When a plurality of pressing inputs on the touch panel are performed, a symbol corresponding to each pressing input of the plurality of pressing inputs is output,
The process to delete is
In response to receiving the deletion of the symbol corresponding to each of the pressed inputs, the position of each of the pressed inputs and the movement distance of each of the pressed inputs in association with the symbol corresponding to each of the pressed inputs , Record a history including the moving direction of each of the pressing inputs,
The determination process is as follows:
In response to receiving a plurality of new pressing inputs on the touch panel, a symbol corresponding to each pressing input associated with the recorded history and a symbol output by the plurality of new pressing inputs, When there is a different symbol, the recorded history and an area corresponding to the positions of the plurality of new pressing inputs among the plurality of areas, the predetermined threshold value, and the movement distances of the plurality of new pressing inputs Determining whether or not to correct the predetermined threshold based on the comparison result and the movement direction of the plurality of new pressing inputs,
The input program according to any one of supplementary notes 4 to 6, characterized in that:

(Supplementary note 8)
In response to receiving a plurality of new pressing inputs on the touch panel, a symbol corresponding to each pressing input associated with the recorded history and a symbol output by the plurality of new pressing inputs, When there is a different symbol, the area corresponding to the recorded position of each pressing input and the area corresponding to the position of the new pressing input corresponding to each pressing input among the plurality of new pressing inputs Are the same, and
The moving direction of each of the pressing inputs matches the moving direction of the new pressing input, the moving distance of the new pressing input is equal to or greater than the predetermined threshold, and the predetermined included in the history The comparison result of the threshold value and the movement distance of each of the pressing inputs indicates that the movement distance is less than the predetermined threshold value, and the candidate value included in the history and the movement distance of each of the pressing inputs The comparison result indicates that the moving distance is greater than or equal to the candidate value.
Alternatively, the moving distance of the new pressing input is less than the predetermined threshold, and the moving distance is calculated based on a comparison result of the predetermined threshold and the moving distance of each pressing input included in the history. A comparison result of the candidate value included in the history and the movement distance of each pressing input indicates that the movement distance is less than the candidate value.
Alternatively, the symbol corresponding to each of the press inputs associated with the history is the same as the symbol output by the new press input, and the predetermined threshold value included in the history and the respective Indicated by the comparison result of the true / false value indicating whether or not the moving distance is equal to or greater than the predetermined threshold, the candidate value included in the history, and the moving distance of the respective pressing inputs The true / false value of whether or not the moving distance is equal to or greater than the candidate value,
If it is determined that the predetermined threshold should be corrected,
The input program according to appendix 7, characterized by:

(Supplementary note 9)
When a plurality of pressing inputs on the touch panel are performed, a first value is calculated based on an average value and a standard deviation of the moving distances that are equal to or more than the predetermined threshold among the moving distances of the plurality of pressing inputs. , Calculating a second value based on an average value and a standard deviation of the movement distances that are less than the predetermined threshold among the movement distances of the plurality of pressing inputs,
The process of calculating the candidate value includes
Calculating the candidate value based on the calculated first value and the second value;
The input program according to any one of appendices 4 to 8, characterized in that:

(Additional remark 10) The said computer has the said touch panel, The input program as described in any one of additional marks 1-9 characterized by the above-mentioned.

(Supplementary Note 11) If the movement distance of the pressing input on the touch panel is equal to or greater than a predetermined threshold, a symbol corresponding to a combination of the position of the pressing input and the moving direction of the pressing input is output, and the movement distance is the predetermined threshold If less than, output the symbol corresponding to the position,
In response to receiving the deletion of the output symbol, record a history including at least one of the position, the moving distance, and the moving direction in association with the symbol,
Based on the recorded history and information corresponding to information contained in the history of the position, moving distance, and moving direction of the new pressing input in response to receiving a new pressing input on the touch panel. To determine whether or not to correct the predetermined threshold,
If it is determined that the predetermined threshold should be corrected, the predetermined threshold is corrected based on the history;
An input device comprising a control unit.

(Supplementary note 12)
If the movement distance of the press input on the touch panel is greater than or equal to a predetermined threshold, a symbol corresponding to the combination of the position of the press input and the movement direction of the press input is output, and if the movement distance is less than the predetermined threshold Outputs a symbol corresponding to the position,
In response to receiving the deletion of the output symbol, record a history including at least one of the position, the moving distance, and the moving direction in association with the symbol,
Based on the recorded history and information corresponding to information contained in the history of the position, moving distance, and moving direction of the new pressing input in response to receiving a new pressing input on the touch panel. To determine whether or not to correct the predetermined threshold,
If it is determined that the predetermined threshold should be corrected, the predetermined threshold is corrected based on the history;
An input method characterized by executing processing.

DESCRIPTION OF SYMBOLS 101 Input device 102 Touch panel 111 1st threshold value 112 2nd threshold value 300 Control part 301 Operation processing part 302 Calculation part 303 Determination correction part 304 Output part 305 Recording part 306 Determination part 307 Correction part 311 Input character recording part 312 Deleted character recording Part

Claims (11)

On the computer,
If the movement distance of the press input on the touch panel is greater than or equal to a predetermined threshold, a symbol corresponding to the combination of the position of the press input and the movement direction of the press input is output, and if the movement distance is less than the predetermined threshold Outputs a symbol corresponding to the position,
In response to receiving the deletion of the output symbol, record a history including at least one of the position, the moving distance, and the moving direction in association with the symbol,
Based on the recorded history and information corresponding to information contained in the history of the position, moving distance, and moving direction of the new pressing input in response to receiving a new pressing input on the touch panel. To determine whether or not to correct the predetermined threshold,
If it is determined that the predetermined threshold should be corrected, the predetermined threshold is corrected based on the history;
An input program characterized by causing a process to be executed. The recording process is as follows:
In response to accepting deletion of the symbol, a region corresponding to the position among a plurality of regions obtained by dividing the touch panel in association with the symbol, a comparison result of the predetermined threshold and the movement distance, Record the history including the moving direction;
The determination process is as follows:
In response to receiving a new pressing input on the touch panel, the recorded history, an area corresponding to a position of the new pressing input among the plurality of areas, the predetermined threshold value, and the new It is determined whether or not the predetermined threshold should be corrected based on the comparison result of the movement distance of the pressing input and the moving direction of the new pressing input.
The input program according to claim 1. The recording process is as follows:
In response to accepting the deletion of the symbol, further record the history including the movement distance,
The correction process is as follows:
If it is determined that the predetermined threshold should be corrected, the predetermined threshold is corrected based on the movement distance included in the history;
The input program according to claim 2, wherein: In the computer,
Calculating a candidate value for correcting the predetermined threshold based on the movement distance of the pressing input,
The recording process is as follows:
In response to accepting the deletion of the symbol, further record the history including the calculated candidate value and the comparison result of the movement distance,
The determination process is as follows:
In response to receiving a new pressing input on the touch panel, the recorded history, an area corresponding to a position of the new pressing input among the plurality of areas, the predetermined threshold value, and the new Based on the comparison result of the movement distance of the pressing input and the moving direction of the new pressing input, it is determined whether or not the predetermined threshold should be corrected,
The correction process is as follows:
If it is determined that the predetermined threshold should be corrected, the predetermined threshold is corrected by updating the predetermined threshold with the candidate value;
The input program according to claim 2 or 3, characterized in that The determination process is as follows:
In response to receiving a new pressing input on the touch panel, the area included in the recorded history is the same as the area corresponding to the position of the new pressing input, and the movement included in the history The direction and the moving direction of the new pressing input match, the moving distance of the new pressing input is equal to or greater than the predetermined threshold, and the predetermined threshold and the moving distance included in the history are compared. When the result indicates that the movement distance is less than the predetermined threshold, and the comparison result between the candidate value and the movement distance included in the history indicates that the movement distance is greater than or equal to the candidate value Determining that the predetermined threshold should be corrected,
The input program according to claim 4. The determination process is as follows:
In response to receiving a new pressing input on the touch panel, the area included in the recorded history and the area corresponding to the position of the new pressing input are the same, and the moving distance of the new pressing input Is less than the predetermined threshold value, and the comparison result of the predetermined threshold value and the moving distance included in the history indicates that the moving distance is greater than or equal to the predetermined threshold and is included in the history When the comparison result of the candidate value and the movement distance indicates that the movement distance is less than the candidate value, it is determined that the predetermined threshold should be corrected.
The input program according to claim 4 or 5, characterized in that The output process is as follows:
When a plurality of pressing inputs on the touch panel are performed, a symbol corresponding to each pressing input of the plurality of pressing inputs is output,
The process to delete is
In response to receiving the deletion of the symbol corresponding to each of the pressed inputs, the position of each of the pressed inputs and the movement distance of each of the pressed inputs in association with the symbol corresponding to each of the pressed inputs , Record a history including the moving direction of each of the pressing inputs,
The determination process is as follows:
In response to receiving a plurality of new pressing inputs on the touch panel, a symbol corresponding to each pressing input associated with the recorded history and a symbol output by the plurality of new pressing inputs, When there is a different symbol, the recorded history and an area corresponding to the positions of the plurality of new pressing inputs among the plurality of areas, the predetermined threshold value, and the movement distances of the plurality of new pressing inputs Determining whether or not to correct the predetermined threshold based on the comparison result and the movement direction of the plurality of new pressing inputs,
The input program according to any one of claims 4 to 6, wherein: The determination process is as follows:
In response to receiving a plurality of new pressing inputs on the touch panel, a symbol corresponding to each pressing input associated with the recorded history and a symbol output by the plurality of new pressing inputs, When there is a different symbol, the area corresponding to the recorded position of each pressing input and the area corresponding to the position of the new pressing input corresponding to each pressing input among the plurality of new pressing inputs Are the same, and
The moving direction of each of the pressing inputs matches the moving direction of the new pressing input, the moving distance of the new pressing input is equal to or greater than the predetermined threshold, and the predetermined included in the history The comparison result of the threshold value and the movement distance of each of the pressing inputs indicates that the movement distance is less than the predetermined threshold value, and the candidate value included in the history and the movement distance of each of the pressing inputs The comparison result indicates that the moving distance is greater than or equal to the candidate value.
Alternatively, the moving distance of the new pressing input is less than the predetermined threshold, and the moving distance is calculated based on a comparison result of the predetermined threshold and the moving distance of each pressing input included in the history. A comparison result of the candidate value included in the history and the movement distance of each pressing input indicates that the movement distance is less than the candidate value.
Alternatively, the symbol corresponding to each of the press inputs associated with the history is the same as the symbol output by the new press input, and the predetermined threshold value included in the history and the respective Indicated by the comparison result of the true / false value indicating whether or not the moving distance is equal to or greater than the predetermined threshold, the candidate value included in the history, and the moving distance of the respective pressing inputs The true / false value of whether or not the moving distance is equal to or greater than the candidate value,
If it is determined that the predetermined threshold should be corrected,
The input program according to claim 7. In the computer,
When a plurality of pressing inputs on the touch panel are performed, a first value is calculated based on an average value and a standard deviation of the moving distances that are equal to or more than the predetermined threshold among the moving distances of the plurality of pressing inputs. , Calculating a second value based on an average value and a standard deviation of the movement distances that are less than the predetermined threshold among the movement distances of the plurality of pressing inputs,
The process of calculating the candidate value includes
Calculating the candidate value based on the calculated first value and the second value;
The input program according to any one of claims 4 to 8. If the movement distance of the press input on the touch panel is greater than or equal to a predetermined threshold, a symbol corresponding to the combination of the position of the press input and the movement direction of the press input is output, and if the movement distance is less than the predetermined threshold Outputs a symbol corresponding to the position,
In response to receiving the deletion of the output symbol, record a history including at least one of the position, the moving distance, and the moving direction in association with the symbol,
Based on the recorded history and information corresponding to information contained in the history of the position, moving distance, and moving direction of the new pressing input in response to receiving a new pressing input on the touch panel. To determine whether or not to correct the predetermined threshold,
If it is determined that the predetermined threshold should be corrected, the predetermined threshold is corrected based on the history;
An input device comprising a control unit. Computer
If the movement distance of the press input on the touch panel is greater than or equal to a predetermined threshold, a symbol corresponding to the combination of the position of the press input and the movement direction of the press input is output, and if the movement distance is less than the predetermined threshold Outputs a symbol corresponding to the position,
In response to receiving the deletion of the output symbol, record a history including at least one of the position, the moving distance, and the moving direction in association with the symbol,
Based on the recorded history and information corresponding to information contained in the history of the position, moving distance, and moving direction of the new pressing input in response to receiving a new pressing input on the touch panel. To determine whether or not to correct the predetermined threshold,
If it is determined that the predetermined threshold should be corrected, the predetermined threshold is corrected based on the history;
An input method characterized by executing processing.

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