JP2014027561A - Information processing apparatus, method of controlling information processing apparatus, control program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve user convenience by enhancing the operability of an input interface.SOLUTION: An information processing apparatus includes: a locus determination section 11 for, when a user operation 4a is detected in an arbitrary position on an input screen 41, determining whether or not a locus 1 connecting a specified position 7a detected by the input screen 41 and a specified position 7b further detected as the user operation moves along the input screen satisfies a predetermined condition; an accuracy distribution decision section 12 for deciding a distribution 2 of accuracy with which the user operation 4a specifies the position on the input screen 41; and an interface setting section 13 for setting an input interface 3 with differently sized keys 5.

Description

  The present invention relates to an information processing apparatus that includes an input surface capable of detecting a position designated by a user operation and is capable of inputting information based on the designated position.

  In recent years, the operation of electronic devices is not a hardware operation via buttons, but a software operation via touch panels. This is because if the input interface is realized by the software key, the interface can be designed flexibly because the manufacturing cost and the weight of the device do not increase even if the key is increased.

  On the other hand, the input of characters to the electronic device places a heavy burden on the user, so attempts to reduce this are widely made. For example, Patent Document 1 below discloses a portable terminal that can be operated without difficulty even if the right and left hands hold the casing.

  Further, in Patent Document 2 below, there is a keyboard in which a plurality of icons are displayed on a touch-sensitive display, and the display of the icons is changed to indicate the correspondence between the touch on the touch-sensitive display and the symbols. It is disclosed.

  Further, Patent Document 3 below discloses a selection input system that improves a character input operation using a software keyboard such as a portable information terminal. Patent Document 4 below discloses a character input device that allows a character to be easily input only by a regular movement operation of the pointer position.

JP 2009-169820 A (released on July 30, 2009) JP 2009-522697 A (released on June 11, 2009) JP 2005-018318 A (published January 20, 2005) JP 2004-280531 A (released on October 07, 2004)

  The accuracy with which the user specifies the position on the touch panel is usually different depending on the position of the touch panel. For example, when a user inputs a character by holding the electronic device with the right hand and touching a software key with the thumb of the right hand, the lower right corner of the touch panel closer to the right hand has a higher accuracy in specifying the position. The accuracy is lower in the upper left corner of the touch panel far from the palm.

  The closer to the lower right corner, the more the user folds the thumb and puts the thumb so that it is substantially perpendicular to the touch panel, and the fingertip specifies the position, while the farther from the lower right corner, the more the user This is because the position is designated by the belly.

  The above Patent Documents 1 to 4 do not disclose that an input interface is designed in consideration that the accuracy differs depending on the position of the touch panel. For example, Patent Document 1 discloses a technique for determining whether a right-handed one-handed operation or a left-handed one-handed operation and changing the arrangement of operation buttons displayed on the monitor so that the one-handed operation can be easily performed. Has been. However, this technique does not change the design of the input interface taking into account the difference in accuracy.

  The present invention has been made in view of the above problems, and its purpose is to change the design of the input interface according to the accuracy with which the user designates the position on the input surface, thereby operating the input interface. It is to provide an information processing apparatus and the like that can improve the convenience and improve the convenience of the user.

In order to solve the above problems, an information processing apparatus according to the present invention provides:
(1) An information processing apparatus including an input surface capable of detecting a position designated by a user operation and capable of inputting information based on the designated position,
(2) When a user operation is detected at an arbitrary position on the input surface, the first designated position detected by the input surface and the user operation further move along the input surface. Determination means for determining whether or not the locus connecting the detected second designated position satisfies a predetermined condition;
(3) A determining unit that determines a distribution of accuracy in which a position on the input surface is designated by the user's operation according to a result determined by the determining unit;
(4) It is characterized by comprising setting means for setting an input interface in which the size of the area where the information to be inputted can be specified is varied according to the accuracy distribution determined by the determining means.

In addition, in order to solve the above-described problem, the control method of the information processing apparatus of the present invention
(1) A method of controlling an information processing apparatus that includes an input surface capable of detecting a position designated by a user operation and is capable of inputting information based on the designated position,
(2) When a user operation is detected at an arbitrary position on the input surface, the first designated position detected by the input surface and the user operation further move along the input surface. A determination step of determining whether or not a locus connecting the detected second designated position satisfies a predetermined condition;
(3) A determination step of determining a distribution of accuracy with which a position on the input surface is designated by an operation of the user according to a result determined in the determination step;
(4) including a setting step of setting an input interface in which the size of an area in which information to be input can be specified is different according to the accuracy distribution determined in the determination step.

  According to said structure (1)-(4), as for the information processing apparatus of this invention, and the control method of the said apparatus, the locus | trajectory which connects a 1st specified position and a 2nd specified position satisfies predetermined conditions. In accordance with the result of the determination, the distribution of accuracy with which the position on the input surface is designated by the user's operation is determined.

  The prior art described in the above prior art documents and the like is for the purpose of executing a process according to the use situation of the user in order to determine whether the operation is a one-hand operation with the right hand or a one-hand operation with the left hand. Use sensors on the side of the body. However, providing a new sensor only for the determination may not be preferable from the viewpoint of cost effectiveness.

  The information processing apparatus or the like having the above configuration does not include a new sensor, and merely determines whether or not the locus input by the user to the input surface satisfies a predetermined condition. A process according to the determination of determining the distribution can be executed.

  Then, the information processing apparatus or the like sets an input interface in which the size of an area in which information to be input can be specified is changed according to the accuracy distribution. For example, the information processing apparatus or the like has a small area displayed at a position corresponding to the position of the input surface with high accuracy for specifying the position, and is displayed at a position corresponding to the position of the input surface with high accuracy. An input interface with a large area can be set.

  In other words, the information processing apparatus and the like described above can change the design of the input interface according to the accuracy with which the user designates the position on the input surface. Therefore, the information processing apparatus and the control method for the apparatus of the present invention can improve the operability of the input interface and improve the convenience for the user.

In the information processing apparatus of the present invention,
(1) The determining unit determines the accuracy distribution so that the accuracy changes stepwise in a predetermined direction according to the result determined by the determining unit.

  According to the configuration (1), the information processing apparatus can determine the accuracy distribution so that the accuracy changes stepwise in a predetermined direction according to the determination result. In other words, in the accuracy distribution, the accuracy changes stepwise in a direction corresponding to a result of determining whether or not the trajectory satisfies a predetermined condition.

  For example, when the trajectory satisfies a predetermined condition that is determined that the trajectory is input by the user's right hand, the information processing apparatus increases stepwise in the direction toward the right hand, The accuracy distribution can be determined.

  That is, the information processing apparatus described above can change the design of the input interface according to the accuracy with which the user designates the position on the input surface. Therefore, the information processing apparatus of the present invention can further improve the operability of the input interface and further improve the convenience for the user.

In the information processing apparatus of the present invention,
(1) The determining unit determines the accuracy distribution so that the accuracy increases in inverse proportion to a distance from a predetermined position on the input surface to a position designated by the user's operation. It is said.

  According to the configuration (1), the information processing apparatus is configured so that the accuracy is in inverse proportion to a distance from a predetermined position (for example, the lower right corner or the lower left corner) on the input surface to a position specified by a user operation. Can be high.

  For example, the information processing apparatus can set the lower right corner of the input surface as the predetermined position, and the accuracy is lower as the distance from the predetermined position to the specified position is longer, and the accuracy is higher as the distance is shorter.

  Therefore, the information processing apparatus of the present invention can further improve the operability of the input interface and further improve the convenience for the user.

In the information processing apparatus of the present invention,
(1) The setting means sets the input interface so that the area becomes smaller in proportion to the accuracy.

  According to said structure (1), the said information processing apparatus makes the said area | region small in proportion to the said precision in the said input interface. This is because if the accuracy is high, the user can specify information to be input accurately even if the area is small. Conversely, the information processing apparatus enlarges the region at the position where the accuracy is low.

  Thereby, the information processing apparatus of this invention can prevent a user's misoperation. Therefore, the information processing apparatus can further improve the operability of the input interface and further improve the convenience for the user.

In the information processing apparatus of the present invention,
(1) The setting means sets a software keyboard in which a key combining vowels and consonants is used as the area and the keys are arranged in a predetermined direction as the input interface.

  As shown in the configuration (1), the input interface in the information processing apparatus is a software keyboard in which keys combining vowels and consonants are arranged in a predetermined direction.

  When the information processing apparatus sets the software keyboard with the arrangement, the information processing apparatus can make the user easily grasp the position of the vowel. In addition, as long as the user learns a combination of consonants and vowels on the software keyboard, the information processing apparatus can easily allow the user to input characters. Therefore, the information processing apparatus of the present invention can further improve user convenience.

In the information processing apparatus of the present invention,
(1) The determination means determines, as one of the predetermined conditions, whether or not a trajectory connecting the first designated position and the second designated position matches a substantially arc. .

  As shown in the configuration (1), the information processing apparatus can set one of the predetermined conditions as to whether or not the trajectory and the substantially arc match. For example, the user can easily input the approximate arc with the thumb of a hand holding the information processing apparatus.

  Therefore, the information processing apparatus according to the present invention allows the user to call the input interface easily, so that the operability of the input interface can be further improved and the convenience of the user can be further improved.

In the information processing apparatus of the present invention,
(1) The determination means determines whether the area of a rectangle having the first designated position and the second designated position as diagonal vertices exceeds a predetermined threshold value. It is characterized by determining as one.

  As shown in the configuration (1), the information processing apparatus determines whether a rectangular area having the first designated position and the second designated position as diagonal vertices exceeds a predetermined threshold value. Can be one of the predetermined conditions.

  Therefore, the information processing apparatus according to the present invention allows the user to call the input interface easily, so that the operability of the input interface can be further improved and the convenience of the user can be further improved.

  The information processing apparatus may be realized by a computer. In this case, a control program for causing the information processing apparatus to be realized by the computer by operating the computer as each unit of the information processing apparatus, and a computer-readable recording medium on which the control program is recorded fall within the scope of the present invention. .

  As described above, when a user operation is detected at an arbitrary position on the input surface, the information processing apparatus of the present invention is configured so that the first designated position detected by the input surface and the user operation are A determination unit that determines whether or not a trajectory connecting the second designated position detected by moving along the input surface satisfies a predetermined condition; and a result determined by the determination unit Determining means for determining an accuracy distribution in which a position on the input surface is designated by the user's operation, and a size of an area in which information to be input can be designated according to the accuracy distribution determined by the determining means And setting means for setting an input interface with different values.

  In addition, when a user operation is detected at an arbitrary position on the input surface, the control method for the information processing apparatus according to the present invention is configured such that the first designated position detected by the input surface and the user operation are A determination step for determining whether or not a trajectory connecting the second designated position detected by moving along the input surface satisfies a predetermined condition, and depending on the result determined in the determination step A determination step of determining an accuracy distribution in which a position on the input surface is specified by the user's operation, and a size of an area in which information to be input can be specified according to the accuracy distribution determined in the determination step And a setting step for setting an input interface with different values.

  Therefore, the information processing apparatus and the control method for the apparatus according to the present invention have the effect of improving the operability of the input interface and improving the convenience for the user.

It is a block diagram which shows the principal part structure of the smart phone which concerns on one embodiment of this invention. (A) is the schematic diagram showing the external appearance example of the said smart phone, (b) is the schematic diagram showing the operation example of the said smart phone by a user. It is a schematic diagram showing the accuracy distribution in which the user designates the position on the input surface, (a) shows the accuracy distribution when the user holds the smartphone in the right hand and designates the position with the thumb of the right hand, b) shows the accuracy distribution when the user holds the smartphone with the left hand and designates the position with the thumb of the left hand. FIG. 4 is a schematic diagram illustrating a software keyboard as an example of an input interface set by the smartphone, where (a) illustrates a right-hand software keyboard that is set when a user operates with the thumb of the right hand, and (b) illustrates The left-hand side software keyboard set when the user operates with the thumb of the left hand is shown. It is a schematic diagram which shows the locus | trajectory which connects the 1st designated position detected by the input surface, and the 2nd designated position further detected when user operation moved along the said input surface, (a). When the user holds the smartphone with the right hand and operates with the thumb of the right hand, an example of a locus drawn by the operation of the thumb is shown, (b) shows the left hand with the user holding the smartphone with the left hand. An example of a locus drawn by the operation of the thumb when operating with the thumb is shown. It is a schematic diagram which shows the structure of a software keyboard, (a) shows what arranged only the vowel (AIUEO) in the predetermined direction in the upper two lines, (b) shows only the consonant in the upper two lines. (C) shows the software keyboard which arranged the key which combined the vowel and the consonant in the predetermined direction. FIG. 7 is a schematic diagram showing a change of the software keyboard displayed by the smartphone when the user touches the key shown in (c) of FIG. 6, and (a) shows only vowels arranged in a predetermined direction in the upper two rows. (B) shows an arrangement in which only consonants are arranged in a predetermined direction in the upper two rows, and (c) is a software keyboard displayed by the user touching a key, A software keyboard in which keys combined with consonants are arranged in a predetermined direction is shown. FIG. 7 is a schematic diagram showing a change of a software keyboard displayed by the smartphone when the user inputs a hiragana “ji”, and (a) is displayed when the user touches a key shown in (c) of FIG. 6. FIG. 8B shows a state where the user has moved his / her finger from the state of FIG. 8A to the key with “ji” displayed on the key top, and FIG. FIG. 8B shows a display when the user lifts his / her finger from the input surface from the state of FIG. 8B, and FIG. 8D shows a display when the character input of “ji” is confirmed. FIG. 7 is a schematic diagram showing a change of a software keyboard displayed by the smartphone when a user inputs a hiragana character “P”, and (a) is displayed when the user touches a key shown in FIG. 6C. (B) shows a state where the user has moved his / her finger from the state of FIG. 9 (a) to the key with “Pe” displayed on the key top, and (c) FIG. 9B shows a display when the user lifts his / her finger from the input surface from the state of FIG. 9B, and FIG. 9D shows a display when the character input of “P” is confirmed. FIG. 10 is a schematic diagram illustrating a change in the software keyboard displayed by the smartphone when the user performs an exceptional operation and when the user returns from the operation, and FIG. FIG. 10 shows a state in which the thumb is moved outside the frame of the software keyboard or in the lower two rows of the software keyboard while the touched thumb is in contact with the input surface after touching the key. From the state of (a), a state is shown in which the thumb is again moved into the frame of the software keyboard while keeping the thumb touched by the user in contact with the input surface. FIG. 7 is a schematic diagram showing a change of a software keyboard displayed by the smartphone when a user inputs a hiragana “pe”, and (a) is a display when the user taps the key shown in (c) of FIG. 6. (B) shows a display when the user repeats tapping further from the state of FIG. 11 (a), and (c) shows the user tapping the key from the state of FIG. 11 (b). The display of the case is shown. It is a flowchart which shows an example of the process which the said smart phone performs when displaying a software keyboard. It is a flowchart which shows an example of the process which the said smart phone performs when there exists key input from a user.

  Based on FIGS. 1-13, embodiment of this invention is described in detail.

  In the following, in order to clearly indicate that there are a plurality of members, the members may be indicated by adding an alphabet to the same member number. For example, “key 5a”, “key 5b”, “key 5c”, “key 5d”, “key 5e”, “key 5f”, and “key 5g” are indicated. Moreover, the said alphabet may be abbreviate | omitted and the said member may be named generically. For example, the keys 5a to 5g and any combination thereof may be collectively referred to as “key 5”.

  In the following description and the above-mentioned drawings, description will be made assuming that the user holds the smartphone 100 (see FIG. 1) with the right hand and brings the thumb of the right hand into contact with the input surface. However, the hand that holds the smartphone 100 may be the right hand or the left hand, and the finger that contacts the input surface may be a finger other than the thumb.

  Further, in the following description and the above drawings, the description will be given as “the user touches the input surface with a finger”. However, when the input surface 41 (see FIG. 1) is, for example, a touch panel that can detect the proximity of a finger, the smartphone 100 also detects the proximity of the user's finger to the input surface 41 and is similar to the case of contact. It is possible to operate.

  Furthermore, the user can use an indicator such as a stylus instead of a finger to operate the smartphone 100. That is, in the following description, “user's (parent) finger” includes “indicator such as stylus”. However, in order to ensure the conciseness of description, only “user's (parent) finger” is described below.

[Outline of smartphone 100]
An outline of the smartphone 100 will be described based on FIG. FIG. 1 is a block diagram illustrating a main configuration of the smartphone 100.

  The smartphone (information processing apparatus) 100 includes an input surface 41 capable of detecting a position designated by a user operation (user operation) 4a, and is an information processing apparatus capable of inputting information based on the designated position. is there.

  An example of the appearance and operation of the smartphone 100 will be described based on FIG. 2A is a schematic diagram illustrating an appearance example of the smartphone 100, and FIG. 2B is a schematic diagram illustrating an operation example of the smartphone 100 by the user.

  As shown in FIG. 2A, the smartphone 100 includes an input surface 41, a display surface 72, and a power switch 43.

  In addition, in order to clarify the function which each structure has, FIG. 1 shows the input surface 41 and the display surface 72 separately. For example, when the input surface 41 is a touch panel and the display surface 72 is a liquid crystal display, As shown to (a) of FIG. 2, both may be comprised as integral. Thereby, since the contact position of the user's finger with respect to the input surface 41 and the display position of the figure or the like displayed on the display surface 72 according to the contact match, the user can obtain a natural input feeling.

  As shown in FIG. 2B, the user touches the input surface 41 and designates a position on the input surface (giving coordinates on the input surface) to the smartphone 100, thereby selecting an icon, etc. Can be given to the smartphone 100.

  As described above, the smartphone 100 is a portable information terminal. In addition, a function equivalent to that of the smartphone 100 can be realized by a mobile phone, a personal computer (particularly a portable notebook personal computer), a tablet terminal, or the like. That is, the terminal may not be a smartphone as long as it is an electronic device that can input and output necessary information.

  Based on FIG. 3, the accuracy distribution (accuracy distribution 2) by which the user designates the position on the input surface 41 will be described. FIG. 3 is a schematic diagram showing the accuracy distribution 2 in which the user specifies the position on the input surface 41.

  3A shows the accuracy distribution 2 when the user holds the smartphone 100 with the right hand and designates the position with the thumb of the right hand, and FIG. 3B shows the accuracy distribution 2 when the user holds the smartphone 100 with the left hand. The accuracy distribution 2 when the position is designated with the thumb of the left hand is shown. Note that the accuracy distribution 2 shown in FIG. 3 indicates that the darker the color, the higher the accuracy with which the user specifies the position on the input surface 41.

  As shown in FIG. 3A, the accuracy with which the user designates the position on the input surface 41 deteriorates in proportion to the distance between the lower right corner (predetermined position) of the input surface and the position. As described above, the closer to the lower right corner of the input surface 41 (the right palm that holds the smartphone 100), the user folds the thumb, puts the thumb so as to be substantially perpendicular to the input surface 41, and the above-mentioned position with the fingertip This is because the user extends the thumb as the distance from the lower right corner increases, and designates the position using the belly.

  As shown in FIG. 3B, when the user holds the smartphone 100 with the left hand, the accuracy with which the user designates the position on the input surface 41 is the lower left corner (predetermined position) of the input surface and the above position. It gets worse in proportion to the distance.

  Therefore, the smartphone 100 determines the accuracy distribution 2 so that the accuracy changes stepwise in a predetermined direction (for example, a direction toward the palm of the user holding the smartphone 100 such as the lower right corner or the lower left corner of the input surface 41). To do.

  Based on FIG. 4, the input interface 3 which the smart phone 100 sets is demonstrated. FIG. 4 is a schematic diagram showing a software keyboard 6 as an example of the input interface 3 set by the smartphone 100. FIG. 4A is a software keyboard 6 for the right hand that is set when the user operates with the thumb of the right hand. (B) shows the software keyboard 6 for the left hand set when the user operates with the thumb of the left hand.

  As illustrated in FIG. 4A, the smartphone 100 sets the software keyboard 6 in which the sizes of the keys (areas in which information to be input can be designated) 5 are different according to the accuracy distribution 2. Specifically, the smartphone 100 displays a small key (for example, the keys 5d and 5e in FIG. 4A) arranged at the position of the display surface 72 corresponding to the lower right corner of the input surface 41. As described above, the lower right corner of the input surface 41 is more accurate in specifying the position, and even if the key is small, the user can touch the key accurately.

  On the other hand, the smartphone 100 displays a large key (for example, the keys 5a, 5b, and 5c in FIG. 4A) arranged at the position of the display surface 72 corresponding to the upper left corner of the input surface 41. This is because the accuracy of specifying the position in the upper left corner of the input surface 41 is low and the user cannot touch the key accurately unless the key is large.

  As illustrated in FIG. 4B, when the user holds the smartphone 100 with the left hand, the smartphone 100 displays a small key arranged at the position of the display surface 72 corresponding to the lower left corner of the input surface 41. On the other hand, the smartphone 100 displays a large key arranged at the position of the display surface 72 corresponding to the upper right corner of the input surface 41.

  Based on FIG. 5, the calling operation of the software keyboard 6 will be described. FIG. 5 is a schematic diagram showing a locus 1 connecting the designated position 7a detected by the input surface 41 and the designated position 7b further detected by the user operation 4a moving along the input surface.

  FIG. 5A shows an example of the locus 1 drawn by the operation of the thumb when the user grips the smartphone 100 with the right hand and operates it with the thumb of the right hand. FIG. Shows an example of the locus 1 drawn by the operation of the thumb when the smartphone 100 is held with the left hand and operated with the thumb of the left hand.

  As shown in FIG. 5A, when the user moves the thumb of the right hand from the upper right to the lower left of the input surface 41 so as to draw a substantially arc (not necessarily an arc) (so-called “swipe”). The smartphone 100 identifies that the user is operating the smartphone with the right hand, and displays the software keyboard 6 for the right hand (see FIG. 4A) on the display surface 72. To do.

  As shown in FIG. 5B, when the user moves the thumb of the left hand so as to draw a substantially arc from the upper left of the input surface 41 to the lower right, the smartphone 100 operates the smartphone with the left hand. The software keyboard 6 for the left hand (see FIG. 4B) is displayed on the display surface 72.

  That is, when the user holds the smartphone 100 with the right hand, the user inputs a substantially arc as shown in FIG. 5A, and when the user holds the smartphone 100 with the left hand, as shown in FIG. 5B. By inputting an approximate arc, the right-hand / left-hand software keyboard 6 can be called up, respectively. The conditions that the call operation should satisfy will be described in detail later.

Summarizing the above outline, the smartphone 100 operates in the following steps (1) to (3). That is, the smartphone 100
(1) Detecting a call operation of the software keyboard 6 corresponding to the user's hand (right hand or left hand) holding the smartphone (see FIG. 5)
(2) Determine the accuracy distribution 2 corresponding to the right hand or the left hand identified by the calling operation (see FIG. 3),
(3) The software keyboard 6 corresponding to the accuracy distribution 2 is set (see FIG. 4).

  Thereby, the smartphone 100 can change the design of the input interface 3 according to the accuracy with which the user designates the position on the input surface 41. Therefore, the smartphone 100 can improve the operability of the input interface 3 and improve the convenience for the user.

[Configuration of Smartphone 100]
Based on FIG. 1, the structure of the smart phone 100 is demonstrated. Note that, from the viewpoint of ensuring the simplicity of the description, portions not directly related to the present embodiment are omitted from the description of the configuration and the block diagram. However, the smartphone 100 may include the omitted configuration in accordance with the actual situation.

  Hereinafter, the input unit 40 (input surface 41, input control unit 42), control unit 10 (trajectory determination unit 11, accuracy distribution determination unit 12, interface setting unit 13), display unit 70 (display control unit 71, display surface 72). The functions of the components in the order of the storage unit 30 will be described.

  The input unit (input unit) 40 receives an operation (user operation 4a) from the user. The input unit 40 includes an input surface 41 and an input control unit 42.

  The input surface 41 outputs two-dimensional coordinate information 4b on the input surface of the user's finger that has touched the input surface to the input control unit 42. Note that the input surface 41 is not limited to a touch panel as long as it is an input device that can detect a contact position by a user operation.

  The input control unit (input control means) 42 detects the locus 1 of the user operation 4a with respect to the input surface 41. For example, the input control unit 42 acquires the coordinate information 4b from the input surface 41 at predetermined time intervals, and outputs the series of coordinate data to the locus determination unit 11 as the locus 1.

  The control unit (control unit) 10 comprehensively controls various functions of the smartphone 100.

  Specifically, the control unit 10 (1) specifies the touched key when the input surface 41 detects a touch from the user, and (2) continues to touch the specified key for a predetermined time. (3) It is determined whether or not the finger touching the specified key has been dragged by a predetermined distance. (4) It is determined whether or not the touch is separated from the input surface 41. Process such as.

  Each function of the control unit 10 may be realized by a CPU (Central Processing Unit) executing a program stored in a storage element such as a RAM (Random Access Memory) or a flash memory. The control unit 10 includes a locus determination unit 11, an accuracy distribution determination unit 12, and an interface setting unit 13.

  When the user operation 4a is detected at an arbitrary position on the input surface 41, the trajectory determination unit (determination unit) 11 performs the specified position (first specified position) 7a detected by the input surface and the user operation. It is determined whether or not the locus 1 connecting the designated position (second designated position) 7b further detected by moving along the input surface satisfies a predetermined condition.

  Specifically, when the trajectory 1 is input from the input control unit 42, the trajectory determination unit 11 determines whether or not the trajectory satisfies a predetermined condition, and the determination result 4 c is sent to the accuracy distribution determination unit 12. Output.

  Here, the determination result 4c is information indicating a result of determining whether or not the trajectory 1 satisfies the predetermined condition. More specifically, when the trajectory 1 is input by the user's right hand, the determination is made when the trajectory satisfies a predetermined condition (the right hand condition, see FIG. 5A) identified by the trajectory determination unit 11. The result 4c indicates that “the locus 1 satisfies the condition for the right hand”.

  On the other hand, when the trajectory 1 is input by the user's left hand, when the trajectory satisfies a predetermined condition (the left hand condition, see FIG. 5B) identified by the trajectory determination unit 11, the determination result 4c is “ Trajectory 1 satisfies the condition for the left hand ". Then, the locus determination unit 11 outputs the determination result 4 c to the accuracy distribution determination unit 12.

  In other words, in other words, when the user operation 4a is detected at an arbitrary position on the input surface 41, the trajectory determination unit 11 includes the designated position 7a detected by the input surface, The user operates the smartphone 100 with the right hand by determining whether or not the locus 1 connecting the designated position 7b further detected by the user operation moving along the input surface satisfies a predetermined condition. To identify (determine) whether it is operating with the left hand.

  The trajectory determination unit 11 may determine whether or not the trajectory 1 connecting the designated position 7a and the designated position 7b coincides with a substantially circular arc as one of the predetermined conditions. It may be determined as one of the predetermined conditions whether or not the area of a rectangle having the designated position 7b as a diagonal vertex exceeds a predetermined threshold value. The right-handed condition and the left-handed condition (conditions that should be satisfied by the locus 1 drawn by an operation performed by the user to call the input interface 3) will be described in detail later.

  Further, the difference (difference between two x-coordinates and y-coordinates) between the designated position 7a and the designated position 7b is extracted (calculated), and the distance (the square) is calculated. And the locus | trajectory determination part 11 determines whether the said distance is less than a predetermined threshold value. If it is determined by the trajectory determination unit 11 that the right hand or the left hand cannot be identified, the interface setting unit 13 (described later) displays a general input interface (for example, software for both hands that is normally used). A command may be output to the display control unit 71 so as to display a keyboard (not shown).

  The accuracy distribution determination unit (determination means) 12 determines the accuracy distribution 2 in which the position on the input surface 41 is designated by the user operation 4a according to the result determined by the trajectory determination unit 11.

  Specifically, when the determination result 4c indicating that the trajectory 1 satisfies the right-hand condition is input from the trajectory determination unit 11, the accuracy distribution determination unit 12 determines that the right side of the input surface 41, for example, the right The accuracy distribution 2 is determined so that the accuracy increases stepwise toward the palm (see FIG. 3A).

  On the other hand, when the determination result 4c indicating that the trajectory 1 satisfies the condition for the left hand is input from the trajectory determination unit 11, the accuracy distribution determination unit 12 moves toward the left palm such as the lower left corner of the input surface 41, for example. The accuracy distribution 2 is determined so that the accuracy increases stepwise in the direction (see FIG. 3B).

  That is, the accuracy distribution determination unit 12 is in inverse proportion to the distance from a predetermined position on the input surface 41 (for example, the lower right corner or the lower left corner of the input surface 41) to the position specified by the user operation 4a. It can be said that the accuracy distribution 2 is determined so that the accuracy with which the position is specified is increased. The accuracy distribution determination unit 12 outputs the determined accuracy distribution 2 to the interface setting unit 13.

  The interface setting unit (setting unit) 13 sets the input interface 3 in which the size of the key 5 is changed according to the accuracy distribution 2 determined by the accuracy distribution determining unit 12. Specifically, when the accuracy distribution 2 is input from the accuracy distribution determining unit 12, the interface setting unit 13 is arranged at the position of the display surface 72 corresponding to the position of the input surface 41 with high accuracy for specifying the position. The key 5 is small and the key 5 arranged at the position of the display surface 72 corresponding to the position of the input surface 41 with low accuracy is displayed large (so that the key becomes smaller in proportion to the accuracy). The input interface 3 is output to the display control unit 71 (see FIG. 4).

  Here, the interface may be, for example, a software keyboard 6 (which will be described in detail later) in which keys 5 in which vowels and consonants are combined are arranged in a predetermined direction, or instructs the smartphone 100 to execute predetermined processing. It may be an icon or the like.

  The display unit (display unit) 70 displays information on the result processed in the control unit 10 to the user.

  Specifically, the display unit 70 (1) displays a character input area on the display surface 72, (2) displays the input interface 3 (software keyboard 6) set by the interface setting unit 13, (3 ) Change the color of the key top of the key touched by the user, (4) Restore the key top color of the key, (5) Switch the display of the software keyboard 6 according to the instruction from the control unit 10 ( 6) Perform processing such as displaying input characters in the input area. The display unit 70 includes a display control unit 71 and a display surface 72.

  The display control unit (display control means) 71 outputs the display data 4 d to the display surface 72 so that the input interface 3 can be displayed on the display surface 72. The display data 4d may be, for example, an image in a bitmap format, an image according to another format, or another data format suitable for display. The display control unit 71 only needs to include content that can be converted into display data 4d.

  The display surface 72 is a device that displays the display data 4 d input from the display control unit 71. In this embodiment, a liquid crystal display (LCD) is mainly assumed. However, the type of hardware is not limited as long as the device has a display function (particularly, a flat panel display). For example, an apparatus including a display element such as a plasma display panel (PDP) or an EL (Electroluminescence) display, and a driver circuit that drives the display element based on display data 4d input from the display control unit 71 Thus, the display surface 72 can be configured.

  As described above, when the input surface 41 is realized by a touch panel and the display surface 72 is realized by a liquid crystal display, both may be configured as one body. In this case, the input surface 41 is made of a transparent transmissive member such as glass formed in a rectangular plate shape, and may be integrally formed so as to cover the display surface 72. Thereby, since the contact position of the user's finger with respect to the input surface 41 and the display position of the figure or the like displayed on the display surface 72 according to the contact match, the user can obtain a natural input feeling.

  The storage unit (storage unit) 30 is a storage device that can store various types of information processed by the smartphone 100. The storage unit 30 can be constituted by, for example, a hard disk, a semiconductor memory, a DVD, or the like. In addition, in this Embodiment, although the memory | storage part 30 is shown in FIG. 1 as an apparatus incorporated in the smart phone 100, the external storage device connected to the exterior of the smart phone 100 so that communication was possible may be sufficient.

[Calling operation of the software keyboard 6]
Based on FIG. 5, conditions to be satisfied by the call operation of the software keyboard 6 will be described in detail. In the two-dimensional coordinates having the lower left corner of the input surface 41 as the origin, the coordinates of the designated position 7a and the designated position 7b are expressed as (x, y) and (x ′, y ′), respectively.

  The locus determination unit 11 calculates the curvature of the locus 1 to determine whether or not the locus coincides with a substantially arc. Or the locus | trajectory determination part 11 may determine whether both are matched by collating the locus | trajectory 1 and a predetermined pattern (for example, arc for right hand / left hand).

  When it is determined that they match, the trajectory determination unit 11 is equivalent to the absolute value of S calculated by the following expression (1) (the area of a rectangle having the designated position 7a and the designated position 7b as diagonal vertices). ) Exceeds a predetermined threshold value λ.

S = X × Y = (xx ′) × (y−y ′) (1)
When it determines with having exceeded, the locus | trajectory determination part 11 identifies whether the user is holding the smart phone 100 with the right hand or the left hand based on the sign of S.

  That is, when the sign of (xx ′) is positive and the sign of S is also positive (note that (yy−y ′) is always positive), the trajectory determination unit 11 The smart phone 100 is identified as being held with the right hand, and the determination result 4c indicating that the locus 1 satisfies the right hand condition is output to the accuracy distribution determination unit 12.

  On the other hand, when the sign of (xx ′) is negative and the sign of S is also negative, the locus determination unit 11 identifies that the user is holding the smartphone 100 with the left hand, and the locus 1 is the left hand. The determination result 4c indicating that the condition for use is satisfied is output to the accuracy distribution determination unit 12.

[Key layout of software keyboard 6]
Based on FIG. 6, the key arrangement of the software keyboard 6 set by the smartphone 100 will be described. FIG. 6 is a schematic diagram showing the configuration of the software keyboard 6.

  FIG. 6A shows an arrangement in which only vowels (AIUEO) are arranged in a predetermined direction (left to right direction in the example of FIG. 6) in the upper two rows, and FIG. A row in which only consonants are arranged in a predetermined direction is shown. FIG. 6C shows the software keyboard 6 in which keys combining vowels (FIG. 6A) and consonants (FIG. 6B) are arranged in a predetermined direction. 6 to 11, the right-hand software keyboard will be described as an example, but the left-hand software keyboard can also be described in the same manner.

  As shown in FIG. 6A, the smartphone 100 determines in advance the arrangement of vowels on the software keyboard 6 (in the example of FIG. 6, “AIUEO” is arranged from left to right). Further, as shown in FIG. 6B, the smartphone 100 also determines in advance the arrangement of consonants in each row (A row, Ka row, Sa row ...) on the software keyboard 6.

  As shown in FIG. 6C, the smartphone 100 configures the software keyboard 6 by combining the vowel arrangement shown in FIG. 6A and the consonant arrangement shown in FIG. That is, the key top of the key 5a of the software keyboard 6 has “A” (A + “A line”), the key top of the key 5b has “KI” (I + “KA line”), and the key 5c has a key top. “S” (U + “Sa line”) is displayed. Note that the software keyboard 6 actually displayed by the smartphone 100 is not shown in FIG. 6A or 6B but shown in FIG. 6C.

  Based on FIG. 7, an operation example of the smartphone 100 when the user touches the key 5c (a key with “su” displayed on the key top) illustrated in FIG. 6C will be described. FIG. 7 is a schematic diagram showing a change of the software keyboard 6 displayed on the smartphone 100 when the user touches the key 5c shown in FIG. 6C. Hereinafter, a state in which any key is touched by the user (a state in FIG. 7C) may be referred to as a “focused state”.

  FIG. 7A shows an arrangement in which only the vowels (AIUEO) are arranged in a predetermined direction in the upper two rows, and FIG. 7B shows only the consonant (“sa row” in the upper two rows “ S "and" Z "representing" clap ") are arranged in a predetermined direction. (C) of FIG. 7 is a software keyboard 6 displayed when the user touches the key 5c, and is a combination of vowels ((a) of FIG. 7) and consonants ((b) of FIG. 7). A software keyboard 6 in which keys are arranged in a predetermined direction is shown.

  As shown in (c) of FIG. 7, when the user touches the key 5 c shown in (c) of FIG. 6, the smartphone 100 displays “conform” consonant and “conform” consonant on the key top. The software keyboard 6 in which the keys are arranged in a predetermined direction is displayed.

  When the user touches any key 5, the smartphone 100 changes the color of the key top of the key (for example, the color of the key not touched by the user is white, and the color of the touched key is light blue) Such). In other words, when a key (an area in which information to be input can be specified) is specified by a user operation, the display unit 70 (display unit) changes the color of the key. Thereby, the smartphone 100 can clearly indicate to the user which key the user is touching.

  As shown in FIG. 7C, the smartphone 100 configures the software keyboard 6 by combining the vowel arrangement shown in FIG. 7A and the consonant arrangement shown in FIG. 7B. That is, "Z" (A + "Zag") is on the key top of the key 5a of the software keyboard 6, "Ji" (I + "Zag") is on the key top of the key 5b, and the key top of the key 5c. “S” (U + “Sa line”) is displayed. Note that the software keyboard 6 actually displayed by the smartphone 100 is not shown in FIG. 7A or 7B but shown in FIG. 7C.

  As shown in (a) of FIG. 6 and (a) of FIG. 7, the smartphone 100 always fixes the arrangement of vowels in the software keyboard 6. Therefore, the smartphone 100 can make the user easily grasp the position of the vowel.

  As shown in FIGS. 6C and 7C, when the user is not operating the software keyboard 6, the user can grasp the consonant arrangement at a glance. Therefore, as long as the user learns the combination of consonants and vowels on the software keyboard 6, the smartphone 100 can easily cause the user to input characters.

  As shown in FIG. 7B, the consonants of “zapping” (Z) are keys arranged on the top row of the software keyboard 6 shown in FIG. Is displayed. Thus, for example, when the user touches “su”, the “zap” key is not hidden by the touched finger. Therefore, the smart phone 100 can make a user grasp | ascertain the arrangement | sequence of a key reliably.

  In addition, although only the consonant of the muddy sound was demonstrated above, the smart phone 100 can display a semi-turbid sound and the consonant of a stuttering sound similarly to the said description. In the above description, the consonant of the muddy sound has been described as being displayed “in the top row” of the software keyboard 6. Furthermore, the example in which vowels are arranged from left to right has been described above, but may be from right to left, from top to bottom, or from bottom to top.

  That is, the above-described key arrangement in the software keyboard 6 is merely an example, and other arrangements are arbitrarily conceivable. For example, the smartphone 100 may display a key that is frequently touched by the user at a position on the display surface 72 corresponding to the position of the input surface 41 with high accuracy for specifying the position.

  In other words, the accuracy distribution determination unit 12 (determination means) determines the accuracy distribution 2 (accuracy of accuracy) so that the accuracy of specifying the position on the input surface 41 is increased in proportion to the frequency of the user operation 4a (user operation). The interface setting unit 13 (setting unit) determines the key 5 (information to be input) in proportion to the accuracy of the accuracy distribution 2 (accuracy distribution) determined by the accuracy distribution determining unit 12 (determination unit). The input interface 3 is set so that the area that can be specified becomes smaller.

[How to operate the software keyboard 6]
Based on FIG. 8, the operation method of the software keyboard 6 is demonstrated. FIG. 8 is a schematic diagram showing a change of the software keyboard 6 displayed on the smartphone 100 when the user inputs the hiragana “ji”.

  FIG. 8A shows the software keyboard 6 displayed when the user touches the key 5c shown in FIG. 6C, as in FIG. 7C, and FIG. Indicates a state in which the user has moved his / her finger from the state of FIG. 8A to the key 5e (a key having “ji” displayed on the key top). FIG. 8C shows a display when the user lifts his / her finger from the input surface 41 from the state of FIG. 8B, and FIG. 8D confirms the character input of “ji”. The display is shown when

  As shown in FIGS. 8A and 8B, the user touches the key 5c shown in FIG. 6C, and touches the key top while keeping the touched thumb in contact with the input surface 41. The thumb is moved to a key displaying “” (an operation called “drag”).

  Then, when the user removes his / her thumb from the input surface (an operation called “touch-up”), as shown in FIG. 8C, the kana-kanji conversion has not been confirmed (the input character is underlined). “Ji” is displayed in the character input area. When the user touches the “confirm” key in this state, the input of “ji” is confirmed as shown in FIG. 8D (state where the underline is not added).

  As described above, the smartphone 100 allows the user to easily grasp the position of the vowel. That is, as shown in FIG. 8, when the user inputs “ji”, if the “ji” common to “ji” and “sa line” is touched, the target “ji” is displayed second from the left. The user can expect to be done. This is because the smartphone 100 always displays the vowel arrangement on the software keyboard 6 in a fixed manner.

  Note that, as illustrated in FIGS. 8A to 8B, the smartphone 100 continuously changes the color of the key top following the movement of the touch position. Thereby, the smartphone 100 can clearly indicate to the user which key the user is touching. In other words, the interface setting unit 13 (setting unit) follows the movement of the position specified by the user operation 4a (user operation), and the color of the key of the input interface 3 (the area where information to be input can be specified). Is continuously changed.

  Based on FIG. 9, the operation method of the software keyboard 6 is further demonstrated. FIG. 9 is a schematic diagram showing a change of the software keyboard 6 displayed on the smartphone 100 when the user inputs hiragana “pe”.

  FIG. 9A shows the software keyboard 6 displayed when the user touches the key 5d shown in FIG. 6C (the key having “ha” displayed on the key top). FIG. 9B shows a state where the user has moved his / her finger from the state of FIG. 9A to the key 5f (a key having “pe” displayed on the key top). FIG. 9C shows a display when the user lifts his / her finger from the input surface 41 from the state of FIG. 9B, and FIG. 9D confirms the character input of “P”. The display is shown when

  As shown in FIGS. 9A to 9B, the user touches the key 5d shown in FIG. 6C, and with the touched thumb being in contact with the input surface 41, the key top is set to “PET”. When the thumb is moved to the key displaying “” and the thumb is released from the input surface, as shown in FIG. 9C, the kana-kanji conversion is in an unconfirmed state (the input character is underlined) ) Is displayed in the character input area. When the user touches the “confirm” key in this state, the input of “pe” is confirmed as shown in FIG.

  Based on FIG. 10, an operation example of the smartphone 100 when the user performs an exceptional operation and when the user returns from the operation will be described. FIG. 10 is a schematic diagram illustrating changes in the software keyboard 6 displayed on the smartphone 100 when the user performs an exceptional operation and when the user returns from the operation.

  FIG. 10A shows that after the user touches the key 5d shown in FIG. 9A, the touched thumb is kept in contact with the input surface 41 and the outside of the software keyboard 6 or the software keyboard. The bottom two lines show the state where the thumb is moved. FIG. 10B shows the state of FIG. 10A, with the thumb touched by the user in contact with the input surface 41 and again with the thumb in the frame of the software keyboard 6 (key 5f in the figure). Indicates the moved state.

  As shown in FIG. 10 (a), after the user touches the key 5d shown in FIG. 9 (a), the touched thumb is kept in contact with the input surface 41, or outside the frame of the software keyboard 6 or When the thumb is moved to the lower two lines of the software keyboard, the smartphone 100 removes the focus. Accordingly, in FIG. 10A, the color of any key is not changed.

  As shown in FIG. 10B, from the state of FIG. 10A, when the thumb touched by the user is kept in contact with the input surface 41 and moved again into the frame of the software keyboard 6, The smartphone 100 returns the focus. Therefore, in FIG. 10B, the color of the key 5f is changed.

  When the user lifts his / her thumb from the input surface 41 in the state of FIG. 10A, the smartphone 100 returns to the display state (the initial display state of the software keyboard 6) shown in FIG. Note that.

  Based on FIG. 11, a different operation method of the software keyboard 6 will be described. FIG. 11 is a schematic diagram showing a change of the software keyboard 6 displayed on the smartphone 100 when the user inputs the hiragana “pe”.

  FIG. 11A shows a display when the user taps the key 5d shown in FIG. 6C (refers to an operation in which the thumb is brought into contact with the input surface 41 and immediately released). FIG. 11B shows a display when the user repeats tapping from the state of FIG. 11A, and FIG. 11C shows the key 5g (key top) from the state of FIG. Shows the display when tapping the key with “゛”.

  As shown in FIGS. 11A to 11C, the user can also input characters by tapping the software keyboard 6. When the user touches the “confirm” key in the state shown in FIG. 11C, the input of “pe” is confirmed as shown in FIG. 9D.

[Processes executed by the smartphone 100]
Based on FIG. 12, the flow of processing executed by the smartphone 100 will be described. FIG. 12 is a flowchart illustrating an example of processing executed by the smartphone 100 when the software keyboard 6 is displayed. In the following description, parenthesized “˜step” represents each step of the control method.

  First, the display unit 70 displays a character input area on the display surface 72 (step 1: abbreviated as S1). Next, the input surface 41 detects the designated position 7a (first designated position) (S2), and further detects the designated position 7b (second designated position) (S3). The trajectory determination unit 11 extracts the difference between the two specified positions (S4) and calculates the distance (the square). And the locus | trajectory determination part 11 determines whether the said distance is less than a predetermined threshold value (S5). If it is determined that the number is lower (YES in S5), the interface setting unit 13 displays a cursor in the input area and sets a software keyboard for both hands (S6).

  On the other hand, when it is determined that it is not lower (NO in S5), the trajectory determination unit 11 determines whether or not the trajectory 1 matches a substantially arc (S7, determination step). When it is determined that they match (YES in S7), it is determined whether or not the absolute value of S calculated by the above-described equation (1) exceeds a predetermined threshold (S8, determination step). When it determines with exceeding (in S8 YES), the locus | trajectory determination part 11 determines whether the code | symbol of S is positive (S9, determination step).

  When the sign of S is positive (YES in S9), the accuracy distribution determination unit 12 determines the accuracy distribution 2 so that the accuracy increases stepwise toward the right palm (S10a, determination step). Then, the interface setting unit 13 displays a small key disposed at the position of the display surface 72 corresponding to the lower right corner of the input surface 41 and displays a large key disposed at the position of the display surface 72 corresponding to the upper left corner. Such a right-hand software keyboard 6 is set (S11, setting step).

  On the other hand, when the sign of S is negative (NO in S9), the accuracy distribution determination unit 12 has the accuracy of specifying the position on the input surface 41 so that the accuracy increases stepwise toward the left palm. The accuracy distribution 2 is determined so as to be higher (S10b, determination step). Then, the interface setting unit 13 displays a small key disposed at the position of the display surface 72 corresponding to the lower left corner of the input surface 41 and displays a large key disposed at the position of the display surface 72 corresponding to the upper right corner. Such a left-hand software keyboard 6 is set (S12, setting step).

  Based on FIG. 13, the flow of different processes executed by the smartphone 100 will be described. FIG. 13 is a flowchart illustrating an example of processing executed by the smartphone 100 when a key is input from the user.

  The display unit 70 displays the input interface 3 (software keyboard 6) set by the interface setting unit 13 (S20). When the input surface 41 detects a touch from the user (YES in S21), the control unit 10 specifies the touched key (S22), and the display unit 70 changes the color of the key top of the specified key. (S23).

  The control unit 10 determines whether or not the specified key has been touched for a predetermined time (S24). When it is determined that the touch is not continued (NO in S24), the control unit 10 determines whether or not the finger touching the identified key has been dragged by a predetermined distance (S25). When it is determined that the key is not dragged (NO in S25), the display unit 70 restores the key top color of the identified key (S26).

  On the other hand, when it is determined that the touch has been continued (YES in S24) or when it is determined that it has been dragged (YES in S25), display unit 70 displays the display of software keyboard 6 as consonant + vowel, muddy, semi The display is switched to the display of muddy / stuttering (S29, for example, see FIG. 7C). Moreover, the control part 10 determines whether the touch left | separated from the input surface 41 (S30).

  When it is determined that the touch is away from the input surface 41 (YES in S30), the display unit 70 displays characters corresponding to the specified key in the input area (S27), and changes the key top color of the key. Return to the original (S28).

[Effects of smartphone 100]
The smartphone 100 has an effect that the operability of the input interface 3 (particularly the software keyboard 6) can be improved and the convenience of the user can be improved.

[Combination of configurations (technical means) included in each embodiment]
Note that the configurations included in the above-described embodiments can be combined as appropriate. In other words, all the configurations described in the above embodiments can be used in combination with all or a part of the configurations in the other embodiments as well as the embodiment according to the above description. Embodiments are also included in the technical scope of the present invention.

[Example of software implementation]
Finally, each block of the smartphone 100, in particular, the control unit 10 (the trajectory determination unit 11, the accuracy distribution determination unit 12, and the interface setting unit 13) is implemented in hardware by a logic circuit formed on an integrated circuit (IC chip). It may be realized or may be realized by software using a CPU.

  In the latter case, the smartphone 100 includes a CPU that executes instructions of a program that realizes each function, a ROM (Read Only Memory) that stores the program, a RAM that expands the program, a memory that stores the program and various data, and the like Storage device (recording medium). An object of the present invention is to provide a recording medium in which a program code (execution format program, intermediate code program, source program) of a control program of the smartphone 100 that is software that realizes the above-described functions is recorded in a computer-readable manner. This can also be achieved by supplying to the smartphone 100 and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).

  Examples of the recording medium include non-transitory tangible medium, such as magnetic tape and cassette tape, magnetic disk such as floppy (registered trademark) disk / hard disk, and CD-ROM / MO. Discs including optical discs such as / MD / DVD / CD-R, cards such as IC cards (including memory cards) / optical cards, semiconductor memories such as mask ROM / EPROM / EEPROM (registered trademark) / flash ROM Alternatively, logic circuits such as PLD (Programmable Logic Device) and FPGA (Field Programmable Gate Array) can be used.

  Further, the smartphone 100 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited as long as it can transmit the program code. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, and the like can be used. The transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type. For example, even with wired lines such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), IEEE 802.11 wireless, HDR ( It can also be used by radio such as High Data Rate (NFC), Near Field Communication (NFC), Digital Living Network Alliance (DLNA), mobile phone network, satellite line, and digital terrestrial network. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  As described above, in this specification, the means does not necessarily mean a physical means, and includes the case where the function of each means is realized by software. Further, the function of one means may be realized by two or more physical means, and the function of two or more means may be realized by one physical means.

  The present invention can be widely applied to information processing apparatuses such as smartphones and tablet terminals that include an input surface capable of detecting a position designated by a user operation and capable of inputting information based on the designated position.

1 Trajectory
2 Accuracy distribution (accuracy distribution)
3 Input interface (input interface)
4a User operation (user operation)
5a-g key (key)
6 Software keyboard (Software keyboard)
7a Designated position (first designated position)
7b Designated position (second designated position)
11 Trajectory determination unit (determination means)
12 Accuracy distribution determination unit (determination means)
13 Interface setting part (setting means)
41 Input side (input side)
100 Smartphone (information processing device)

Claims (10)

An information processing apparatus comprising an input surface capable of detecting a position designated by a user operation and capable of inputting information based on the designated position,
When a user operation is detected at an arbitrary position on the input surface, the first designated position detected by the input surface and further detected by moving the user operation along the input surface. Determination means for determining whether or not a trajectory connecting the second designated position satisfies a predetermined condition;
A determination unit that determines a distribution of accuracy in which a position on the input surface is designated by an operation of the user according to a result determined by the determination unit;
An information processing apparatus comprising: setting means for setting an input interface in which the size of an area in which information to be input can be specified is changed according to the accuracy distribution determined by the determining means.   2. The determination unit according to claim 1, wherein the determination unit determines the accuracy distribution so that the accuracy changes stepwise in a predetermined direction according to a result determined by the determination unit. Information processing device.   The determination means determines the accuracy distribution so that the accuracy increases in inverse proportion to a distance from a predetermined position on the input surface to a position specified by the user's operation. Item 3. The information processing device according to item 1 or 2.   The information processing apparatus according to claim 1, wherein the setting unit sets the input interface so that the area becomes smaller in proportion to the accuracy.   5. The setting unit according to claim 1, wherein a key combining a vowel and a consonant is set as the area, and a software keyboard having the keys arranged in a predetermined direction is set as the input interface. The information processing apparatus according to item 1.   The determination means determines whether one of the predetermined conditions is whether or not a trajectory connecting the first designated position and the second designated position coincides with a substantially circular arc. 6. The information processing apparatus according to any one of items 1 to 5.   The determination means determines whether one of the predetermined conditions is whether a rectangular area having the first designated position and the second designated position as diagonal vertices exceeds a predetermined threshold value. The information processing apparatus according to claim 1, wherein the information processing apparatus is determined. An information processing apparatus control method comprising an input surface capable of detecting a position designated by a user operation and capable of inputting information based on the designated position,
When a user operation is detected at an arbitrary position on the input surface, the first designated position detected by the input surface and further detected by moving the user operation along the input surface. A determination step of determining whether or not a trajectory connecting the second designated position satisfies a predetermined condition;
A determination step for determining a distribution of accuracy in which a position on the input surface is designated by an operation of the user according to a result determined in the determination step;
And a setting step for setting an input interface in which the size of the area where the information to be input can be specified is changed according to the accuracy distribution determined in the determination step. .   A control program for operating the information processing apparatus according to any one of claims 1 to 7, wherein the control program causes a computer to function as each of the means.   A computer-readable recording medium on which the control program according to claim 9 is recorded.

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