JP6515000B2 - Information terminal device - Google Patents

Description

  The present invention relates to an information terminal device provided with a handwriting input device.

  Among information terminal devices such as tablet terminals, those capable of pen input and touch input with a finger or the like are known. In such an information terminal device, a configuration may be adopted to prevent an erroneous touch input by the hand holding the pen when the input by the pen is performed. For example, in the information terminal device described in Patent Document 1, when there is pen input by a dedicated pen and touch input by a finger or the like at the same time, touch input is invalidated. The invalidation of the touch input is continued until the touch input disappears.

Unexamined-Japanese-Patent No. 2010-020658

  In the information terminal device described in Patent Document 1, by detecting a situation in which it is considered that a pen input is being performed, touch input is automatically invalidated while the situation continues.

  On the other hand, it is also possible to adopt a configuration in which the user switches the input mode from the multi mode for enabling pen input and touch input to the pen mode for enabling pen input and disabling touch input by performing a predetermined switching operation. it can. While this pen mode is set, touch input is disabled. In such a configuration, it is desirable that the switching operation to the pen mode can be performed as well as possible when the user inputs characters and the like using the pen.

  Then, an object of this invention is to provide the information terminal device which can switch to the input mode which nullifies touch input by natural operation using a writing instrument.

  An information terminal apparatus according to a main aspect of the present invention includes an input receiving unit including a first receiving unit that receives a touch input through an input receiving surface, and a second receiving unit that receives an input by a writing instrument through the input receiving surface. And a control unit. Here, based on the fact that the input accepting unit receives an input satisfying the first switching condition when the first mode for enabling the input by the writing instrument and the touch input is set. Switching from the first mode to a second mode in which the input by the writing instrument is enabled and the touch input is disabled. In this case, the first switching condition includes a condition that the touch on the input receiving surface by the writing instrument continues for a first predetermined time or more in a state in which the change in the position of the touch remains within a first predetermined range. .

  According to the above configuration, when the user starts inputting the characters and the like with the writing instrument, the input mode is set to the touch input invalid by the natural operation of stopping the tip of the writing instrument on the input receiving surface. You can switch to the mode.

  In the information terminal device according to this aspect, the first switching condition is a state in which the touch input is performed during at least a part of a period during which the touch on the input reception surface by the writing instrument continues for the first predetermined time or more. (1) It may include the condition of being accepted by the accepting unit.

  According to the above configuration, the user switches the input mode to the second mode by placing the tip of the writing instrument on the input accepting surface while holding the hand holding the writing instrument on the input accepting surface. Thus, by placing the hand holding the writing instrument on the input receiving surface in addition to the switching condition to the second mode, it is possible to suppress the switching of the input mode due to an erroneous operation not intended by the user. Moreover, when the user intentionally brings the tip of the writing instrument into contact with the input acceptance surface, the hand holding the writing instrument naturally tends to be placed on the input acceptance surface. Therefore, also in the case of the above configuration, the user can switch the input mode to the second mode by a natural operation.

  In the case of the above configuration, the first switching condition may further include a condition that a touch area in the touch input received by the first reception unit during the at least one part is equal to or larger than a predetermined area.

  When the user places the hand holding the writing instrument on the input reception surface, a relatively large area of the input reception surface can be touched by the hand. With the above configuration, the touch area in the touch input is added to the switching condition to the second mode, and the received touch input is due to the hand holding the writing instrument being placed on the input reception surface Since it can be determined with high accuracy, it is possible to further suppress the switching of the input mode due to an erroneous operation not intended by the user.

  In the case of the above configuration, the first switching condition further includes the condition that the change degree of the touch area in the touch input received by the first reception unit during the at least one part is equal to or less than a predetermined degree. May be included.

  When the user places the hand holding the writing instrument on the input acceptance surface and brings the tip of the writing instrument into contact with the input acceptance surface, the placed hand tends to stand still and the area of the area of the input acceptance surface touched by the hand is It is hard to change. With the above configuration, the degree of change of the touch area in the touch input is added to the switching condition to the second mode, and the received touch input is due to the hand holding the writing instrument being placed on the input receiving surface Since it can be determined with high accuracy whether or not the input mode is switched, it is possible to further suppress the switching of the input mode due to an erroneous operation not intended by the user.

  In the case of the above configuration, the first switching condition further includes the position of the touch on the input reception surface by the writing instrument, and the position of the touch input received by the first reception unit during the at least part of the period. It may include the condition that the distance between and is less than or equal to a predetermined distance.

  When the user places the hand holding the writing tool on the input receiving surface and brings the tip of the writing tool into contact with the input receiving surface, the position of the touch by the writing tool and the area of the placed hand, that is, the position of the touch input The distance is roughly determined. With the above configuration, when the distance between the position of the touch by the writing tool and the position of the touch input is added to the switching condition to the second input mode, the hand holding the writing tool with the accepted touch input receives the input acceptance surface Since it can be determined with high accuracy whether or not it is due to being placed on the switch, it is possible to further suppress the switching of the input mode due to the user's unintended erroneous operation.

  In the information terminal device according to the present aspect, when the second mode is set, the control unit is configured to, based on the fact that an input satisfying the second switching condition is accepted by the input acceptance unit. The mode may be switched to the first mode. In this case, the second switching condition may include a condition that the touch on the input receiving surface by the writing instrument continues for a second predetermined time or more in a state in which the fluctuation of the position of the touch remains within a second predetermined range. .

  According to the above configuration, the user makes the input mode valid and the touch input effective by the natural operation of stopping the tip of the writing instrument on the input acceptance surface when finishing the input of the characters and the like with the writing instrument. You can switch to the mode.

  In the case of the above configuration, the second switching condition may be set so that the touch input is performed during at least a part of a period during which the touch on the input receiving surface by the writing instrument continues for the second predetermined time or more. (1) It may include the condition of being accepted by the accepting unit.

  According to the above configuration, the user switches the input mode to the first mode by placing the tip of the writing tool on the input receiving surface while the hand holding the writing tool is placed on the input receiving surface. As described above, placing the hand holding the writing instrument on the input reception surface adds to the switching condition to the first mode, and as in the case of the switching operation to the second mode, while maintaining the natural operation, It is possible to suppress switching of the input mode due to an erroneous operation unintended by the user.

  In the case of the above configuration, the second switching condition further includes a condition that the duration of the touch on the input receiving surface by the writing instrument does not exceed a third predetermined time which is longer than the second predetermined time. obtain.

  With the above configuration, since the upper limit is provided for the duration of touch, for example, while the user is using a writing instrument to input characters and the like, the tip of the writing instrument is kept in contact with the input acceptance surface When a situation arises in which an idea occurs, it is unlikely that the second mode will switch to the first mode and touch input will become effective.

  The information terminal device according to the present aspect may further include a display unit, and the control unit may be configured to cause the display unit to display an image according to switching between the first mode and the second mode. .

  According to the above configuration, the user can easily grasp the state of whether the touch input is valid or invalid.

  As described above, according to the present invention, it is possible to provide an information terminal device capable of switching to an input mode in which touch input is invalidated by a natural operation using a writing instrument.

  The effects and significances of the present invention will become more apparent from the description of the embodiments shown below. However, the embodiment shown below is merely an example when implementing the present invention, and the present invention is not limited to the one described in the following embodiment.

Fig.1 (a) is a front view of the information terminal device based on embodiment, FIG.1 (b) is a figure which shows the cross section of the information terminal device based on embodiment. FIG. 2 is a block diagram showing the configuration of the information terminal device according to the embodiment. Fig.3 (a) is a figure which shows a mode that the user performs switching operation of the input mode using a digitizer pen based on embodiment, FIG.3 (b) is a user according to embodiment. It is a figure which shows a mode that handwriting input operation is performed using the pen. FIG. 4 is a flowchart showing input mode switching processing according to the embodiment. FIG. 5 is a flowchart showing an input mode switching process according to the embodiment. Fig.6 (a) is a figure which shows the example of a screen display of a touch panel when the information terminal device is set to multi mode based on embodiment, FIG.6 (b) is an information terminal based on embodiment. It is a figure which shows the example of a screen display of a touch panel when the apparatus is set to multi mode. FIG. 7 is a flowchart showing an input mode switching process according to the first modification. Fig.8 (a) is a flowchart which shows the input mode switching process based on the example 2 of a change, FIG.8 (b) is based on the example 2 of a change, and the user performs input mode switching operation using a digitizer pen. It is a figure which shows a mode that it is. FIG. 9 is a flowchart showing an input mode switching process according to the third modification. Fig.10 (a) is a flowchart which shows the input mode switching process based on the example 4 of a change, FIG.10 (b) is based on the example 4 of a change, and the user performs input mode switching operation using a digitizer pen. It is a figure which shows a mode that it is. FIG. 11 is a flowchart illustrating an input mode switching process according to the fifth modification.

  In the present embodiment, the present invention is applied to a tablet terminal which is a type of information terminal device. The information terminal device of the present embodiment is assumed to be used for education. The present invention is not limited to tablet terminals, and may be applied to other types of information terminal devices such as mobile phones and notebook computers.

  FIG. 1A is a front view of the information terminal device 1, and FIG. 1B is a view showing a cross section of the information terminal device 1. In FIGS. 1A and 1B, XYZ axes orthogonal to each other are shown for convenience. The X-axis direction is the direction in which the short side of the input reception surface 31a described later extends, the Y-axis direction is the direction in which the long side of the input reception surface 31a extends, and the Z-axis direction is perpendicular to the input reception surface 31a It is a direction.

  As shown in FIGS. 1A and 1B, the information terminal device 1 includes a housing 10, a digitizer pen 20, and a touch panel 30. The housing 10 is provided with a housing portion 11 for housing the digitizer pen 20. A winding coil and a capacitor are disposed at the pen tip (tip) 21 of the digitizer pen 20. The touch panel 30 has a configuration in which a cover 31, a liquid crystal display unit 32, a touch pad 33, and a digitizer sensor 34 are overlapped in the Z-axis direction.

  The cover 31 is transparent and covers the housing 10. The front side surface (surface on the Z axis positive side) of the cover 31 is a flat surface. Input to the touch pad 33 and the digitizer sensor 34 is performed via the input receiving surface 31 a of the cover 31. The input receiving surface 31 a is a rectangular surface located at the center of the front surface of the cover 31 and corresponds to an area in the touch pad 33 and the digitizer sensor 34 that can receive an input. The input acceptance surface 31a is configured to have different lengths in the vertical and horizontal directions.

  The liquid crystal display unit 32 includes a liquid crystal panel and an LED backlight for illuminating the liquid crystal panel, and displays various images. Note that, in the information terminal device 1, a display unit other than the liquid crystal display unit 32, for example, an organic EL type display unit may be used.

  The touch pad 33 is transparent, is disposed on the display surface of the liquid crystal display unit 32, and receives an input by a finger or the like (hereinafter referred to as "touch input") through the input receiving surface 31a. The touch pad 33 is a capacitive touch pad. When the touch input is performed, the touch pad 33 detects the touch input based on the change in capacitance, and the coordinate position indicating the touched position, ie, the position of the touch input, and the area of the touched area, ie, And an area signal indicating a touch area. The coordinate signal and the area signal are transmitted to the control unit 40 described later by a hardware interrupt. For example, the gravity center of the area of the touched area is set as the position of the touch input. When the touch pad 33 is a touch pad compatible with so-called multi-touch capable of simultaneously detecting a plurality of touches, the touch pad 33 outputs coordinate signals and area signals as described above by the number of touches.

  The digitizer sensor 34 is disposed below the display surface of the liquid crystal display unit 32, and receives an input (hereinafter referred to as "pen input") by the digitizer pen 20 through the input receiving surface 31a. The digitizer sensor 34, together with the digitizer pen 20, constitutes an electromagnetic digitizer. In the digitizer sensor 34, a sensor coil is disposed at each coordinate position. The digitizer sensor 34 applies an alternating current to each sensor coil at a constant cycle.

  When the pen tip 21 of the digitizer pen 20 approaches the digitizer sensor 34, an alternating current flowing in each sensor coil of the digitizer sensor 34 generates an induced electromotive force in the winding coil of the digitizer pen 20. In the digitizer pen 20, the induced electromotive force causes a current to flow in an LC resonant circuit composed of a winding coil and a capacitor. Thus, when current flows in the winding coil, an induced electromotive force is generated in the sensor coil near the digitizer pen 20 among the sensor coils on the digitizer sensor 34 side. The digitizer sensor 34 identifies the sensor coil in which the largest induced electromotive force has occurred, and outputs a coordinate signal indicating the coordinate position of the sensor coil.

  The digitizer pen 20 is configured such that the winding coil disposed inside the digitizer pen 20 is contracted when the pen tip 21 is pressed against the input receiving surface 31 a. When the digitizer pen 20 is pressed against the input receiving surface 31 a and the winding coil is contracted, the amount of current flowing through the sensor coil of the digitizer sensor 34 changes. The digitizer sensor 34 outputs a touch signal indicating that the digitizer pen 20 has touched in response to the change in the amount of current. When the digitizer pen 20 is separated from the input receiving surface 31a, the contraction of the winding coil is eliminated, so the amount of current flowing through the sensor coil of the digitizer sensor 34 changes. The digitizer sensor 34 outputs a separation signal indicating that the digitizer pen 20 has separated in response to the change in the amount of current.

  FIG. 2 is a block diagram showing the configuration of the information terminal device 1.

  The information terminal device 1 includes a control unit 40 and a storage unit 50 in addition to the liquid crystal display unit 32, the touch pad 33, the digitizer sensor 34, and the digitizer pen 20 shown in FIGS. 1 (a) and 1 (b). The control unit 40 and the storage unit 50 are housed in a housing 10 shown in FIG.

  The control unit 40 includes a CPU, a timer, and the like, and the storage unit 50 includes a ROM, a RAM, a flash memory, and the like. The storage unit 50 stores various programs including a program for input mode switching processing described later. The control unit 40 receives a signal from each unit of the information terminal device 1, and controls each unit of the information terminal device 1 according to a program stored in the storage unit 50.

  The control unit 40 executes an input mode switching process, and switches the input mode of the information terminal device 1 between the multi-input mode and the pen mode based on the switching operation by the user. More specifically, when the control unit 40 is set to the multi mode, the control unit 40 switches from the multi mode to the pen mode based on the fact that the touch panel 30 receives an input satisfying the first switching condition. In addition, when the multi-mode is set, the control unit 40 switches from the pen mode to the multi-mode based on the fact that the touch panel 30 receives an input satisfying the second switching condition. In the present embodiment, the first switching condition and the second switching condition are defined in such a state that the touch of the digitizer pen 20 on the input receiving surface 31 a remains in the defined range R with fluctuations in the position (coordinate position) of the touch. Including the condition of continuing T1 or more.

  When the input mode is set to the multi mode, the pen input and the touch input by the user become effective, and the control unit 40 executes the processing according to the pen input accepted by the digitizer sensor 34 or the touch input accepted by the touch pad 33 Do. On the other hand, when the input mode is set to the pen mode, the pen input is enabled but the touch input is disabled, and the control unit 40 executes processing according to the pen input accepted by the digitizer sensor 34, but the touch pad Ignore the touch input accepted by 33.

  FIG. 3A is a view showing the user performing the switching operation of the input mode using the digitizer pen 20, and FIG. 3B is a diagram showing the handwriting input operation using the digitizer pen 20 by the user. It is a figure which shows a mode that it is going.

  As shown in FIG. 3A, the user switches the input mode from the multi mode to the pen mode when inputting characters and the like to the input receiving surface 31 a with the digitizer pen 20. In this case, before starting to draw characters and the like with the digitizer pen 20, the pen tip 21 of the digitizer pen 20 is once applied to the input reception surface 31a, and the pen tip 21 is kept stationary for a while. Is released from the input acceptance surface 31a. The first switching condition described above is satisfied, and the input mode is switched from the multi mode to the pen mode. Further, in the state where the pen mode is set, if the user performs the same operation, the second switching condition described above is satisfied, and the input mode is switched from the pen mode to the multi mode. The prescribed range R is a value that can be regarded as a stationary state even if a slight shaking occurs, in consideration of the shaking of the pen tip 21 that may occur when the user tries to hold the digitizer pen 20 in a stationary state. For example, it is set to a value of about 5 to 10 dots. In addition, the specified time T1 is a time in which it can be determined that the user intentionally pressed the input receiving surface 31a with the digitizer pen 20, instead of the pen tip 21 of the digitizer pen 20 instantaneously touching the input receiving surface 31a. For example, it is set to a time of about 1 to 2 seconds.

  On the other hand, as shown in FIG. 3B, when the user inputs characters and the like to the input receiving surface 31a with the digitizer pen 20, the pen tip 21 does not stay within the specified range R for the specified time T1. , Take action according to the characters to be drawn. For this reason, when the user performs a handwriting operation of drawing a character or the like, the above-described first switching condition and second switching condition are not satisfied, and the input mode is not switched.

  4 and 5 are flowcharts showing input mode switching processing.

  When the digitizer sensor 34 receives a pen input (S11: YES), the control unit 40 determines the type of the accepted pen input (S12). When the received pen input indicates that the digitizer pen 20 is touched on the input reception surface 31a (S12: touch), the control unit 40 sets the coordinate position of the digitizer pen 20 at that time to the start coordinate. It sets to (S13). Then, the control unit 40 operates a timer in order to measure the time during which the digitizer pen 20 is touched to the input receiving surface 31a (S14).

  In S12, if the accepted pen input indicates that the digitizer pen 20 is in the process of being touched by the input acceptance surface 31a (S12: in touch), if the start coordinates have already been set (S15: YES), the control unit 40 acquires the distance between the current coordinate position of the digitizer pen 20 and the start coordinate, that is, the variation R0 of the coordinate position of the digitizer pen 20 from the start coordinate (S16). Then, the control unit 40 determines whether or not the acquired variation amount R0 is within the defined range R (S17).

  If the variation amount R0 is within the defined range R (S17: YES), the setting of the start coordinates is maintained and the operation of the timer is maintained. On the other hand, when the fluctuation amount R0 is not within the defined range R (S17: YES), the control unit 40 erases the start coordinates (S18), and stops and resets the timer (S19).

  In S12, when the accepted pen input indicates that the digitizer pen 20 is released from the input receiving surface 31a (S12: release), if the start coordinates are already set (S15: YES), The control unit 40 determines whether or not the measurement time T0 of the tarmer is equal to or longer than the specified time T1 (S21). If the measurement time T0 is equal to or longer than the specified time T1 (S21: YES), the control unit 40 determines whether the current input mode is set to the multi mode or the pen mode (S22). When the multi mode is set (S22: multi), the control unit 40 switches from the multi mode to the pen mode (S23). On the other hand, when the pen mode is set (S22: pen), the control unit 40 switches from the pen mode to the multi mode (S24). Thereafter, the control unit 40 erases the start coordinates (S25), and stops and resets the timer (S26).

  When the user touches the input acceptance surface 31a with the digitizer pen 20 in order to switch to the pen mode while the multi mode is set, it is determined in S12 that the touch is determined, and the processes in S13 and S14 are executed. Subsequently, when the user touches the digitizer pen 20 while touching the input reception surface 31a and maintains the stationary state, it is determined in S12 that a touch is in progress, and the processing from S15 to S17 is repeated. Thereafter, when the user releases the digitizer pen 20 from the input receiving surface 31a, it is determined in S12 that the release is performed, and the processes of S20 to S23, S25, and S26 are executed. Thus, the input mode switches from the multi mode to the pen mode.

  Similarly, when the user touches the input reception surface 31a with the digitizer pen 20 in order to switch to the multi mode in the state where the pen mode is set, determination as touch is made in S12, and the processes of S13 and S14 are executed. Be done. Subsequently, when the user touches the digitizer pen 20 while touching the input reception surface 31a and maintains the stationary state, it is determined in S12 that a touch is in progress, and the processing from S15 to S17 is repeated. Thereafter, when the user releases the digitizer pen 20 from the input receiving surface 31a, it is determined in S12 that the release is performed, and the processes of S20 to S22 and S24 to S26 are executed. Thus, the input mode switches from the pen mode to the multi mode.

  When the user inputs characters and the like with the digitizer pen 20, the digitizer pen 20 is moved in a state of being touched to the input acceptance surface 31a, so the processing of S18 and S19 is executed by the determination of NO in S17. After that, when the digitizer pen 20 is released from the input receiving surface 31a, the processing after S21 is not executed, and the input mode is not switched.

  FIG. 6A is a diagram showing an example of a screen display of the touch panel 30 when the information terminal device 1 is set to the multi mode, and FIG. 6B shows that the information terminal device 1 is set to the multi mode It is a figure which shows the example of a screen display of the touch panel 30 in case of.

  As shown in FIG. 6A, while the multi mode is set, the control unit 40 causes the touch panel 30, that is, the liquid crystal display unit 32, to display the multi mode notification icon C1. For example, the multi-mode notification icon C1 is configured by an image of a hand stretching an index finger for touch. The multi mode notification icon C1 notifies that the multi mode is set and the touch input is valid.

  On the other hand, as shown in FIG. 6B, while the pen mode is set, the control unit 40 causes the liquid crystal display unit 32 to display a pen mode notification icon C2. For example, the pen mode notification icon C2 is configured by an image in which a cross is placed in the vicinity of the hand that extends the forefinger for a touch. The pen mode notification icon C2 notifies that the pen mode is set and touch input is invalid.

<Effect of the embodiment>
As mentioned above, according to this embodiment, the following effects are produced.

  When the user starts inputting characters and the like with the digitizer pen 20, the pen mode makes the input mode invalid and the touch input by a natural operation of stopping the pen tip 21 of the digitizer pen 20 on the input receiving surface 31a. You can switch to

  In addition, the user makes touch input effective in the input mode by a natural operation of stopping the pen tip 21 of the digitizer pen 20 on the input receiving surface 31a when finishing inputting characters and the like with the digitizer pen 20. It can switch to multi mode.

  Furthermore, the user can easily confirm whether the touch input is valid or invalid by confirming the multi-mode notification icon C1 or the pen mode notification icon C2 displayed on the touch panel 30 (liquid crystal display unit 32). I can understand.

  As mentioned above, although embodiment of this invention was described, this invention is not restrict | limited at all by the said embodiment, Moreover, the embodiment of this invention can also be variously modified in addition to the above. Hereinafter, various modifications will be described.

<Modification 1>
In the above embodiment, the first switching condition and the second switching condition for switching the input mode are such that the touch of the digitizer pen 20 on the input receiving surface 31a is within the defined range R where the variation of the position (coordinate position) of the touch is The condition of continuing for at least the specified time T1 in the state of staying at is included.

  On the other hand, in this modification, the first switching condition and the second switching condition are in addition to the conditions in the above embodiment, in a period in which the digitizer pen 20 continues touching the input receiving surface 31a for a prescribed time T1 or more. A condition that touch input is accepted by the touch pad 33 is included.

  FIG. 7 is a flowchart showing an input mode switching process according to this modification. In the input mode switching process of the present modified example, the processes of S31 to S33 are added as compared with the input mode switching process of the above-described embodiment shown in FIGS. 4 and 5.

  That is, in the present modification, when the digitizer sensor 34 receives a pen input (S11: YES), the control unit 40 determines whether the touch pad 33 receives a touch input (S31). If the touch input is accepted (S31: YES), the control unit 40 determines the type of pen input (S12). On the other hand, if the touch input is not received (S31: NO), the control unit 40 does not perform the processing of S12 and subsequent steps, and the start coordinates are set. S32) The timer is stopped and reset (S33).

  In this modification, when the input mode is switched from the multi mode to the pen mode or from the pen mode to the multi mode, the user places the hand holding the digitizer pen 20 on the input reception surface 31a, After touching the input acceptance surface 31a with the pen tip 21 of 20 and keeping the pen tip 21 stationary for a while, the pen tip 21 is released from the input acceptance surface 31a.

  When the hand holding the digitizer pen 20 is placed on the input acceptance surface 31a, it is determined that the touch input is in progress in S31, so when the user touches the input acceptance surface 31a with the digitizer pen 20, S13 and When the process of S14 is executed and then the user maintains the stationary state while touching the digitizer pen 20 to the input receiving surface 31a, the processes of S15 to S17 are repeated, and then the user performs the digitizer pen 20. When released from the input acceptance surface 31a, the processes of S20 to S26 are executed. Thereby, the input mode is switched from the multi mode to the pen mode or from the pen mode to the multi mode.

  On the other hand, digitizer pen 20 is touched on input acceptance surface 31a while touch input is not accepted on touch pad 33, such as digitizer pen 20 held by hand accidentally touching input acceptance surface 31a. In the case where the digitizer pen 20 is released from the input acceptance surface 31a after the specified time T1 has passed since the process does not proceed to the process after S12, the input mode does not switch.

  As described above, according to the configuration of the present modification, placing the hand holding the digitizer pen 20 on the input receiving surface 31a adds to the switching condition of the input mode, thereby suppressing switching of the input mode due to an unintended operation by the user. . In addition, when the user intentionally touches the input acceptance surface 31a with the digitizer pen 20, the hand holding the digitizer pen 20 naturally tends to be placed on the input acceptance surface 31a. Therefore, also in the case of the configuration of the present modified example, the user can switch the input mode by natural operation.

<Modification 2>
In this modification, the first switching condition and the second switching condition include the condition that the touch area S of the touch input accepted by the touch pad 33 is equal to or larger than the defined area RS in addition to the conditions in the first modification.

  FIG. 8A is a flowchart showing an input mode switching process according to the present modification, and FIG. 8B is a user according to the present modification using the digitizer pen 20 to perform an input mode switching operation. It is a figure which shows a mode that it is going. In the input mode switching process of this modified example, the processes of S31 to S34 are added as compared with the input mode switching process of the above-described embodiment shown in FIGS. 4 and 5. In addition, only the process before S34 is shown by Fig.8 (a).

  That is, in this modified example, when it is determined that the touch pad 33 receives a touch input (S31: YES), the control unit 40 determines that the touch area S of the received touch input is equal to or larger than the specified area RS. It is determined whether or not (S34). When the hand holding the digitizer pen 20 is placed on the input receiving surface 31a, the size of the defined area RS is set such that the touch area S at that time is equal to or larger than the defined area RS.

  If the touch area S is equal to or larger than the specified area RS (S34: YES), the control unit 40 determines the type of pen input (S12). On the other hand, when the touch input is not received (S31: NO), or when the touch area S of the received touch input is less than the specified area RS (S34: NO), the control unit 40 performs S12 or later. If processing is not performed, start coordinates are set, and the timer is activated, the start coordinates are erased (S32), and the timer is stopped and reset (S33).

  In this modification, as in the first modification, when the input mode is switched from the multi mode to the pen mode or from the pen mode to the multi mode, the user places the hand holding the digitizer pen 20 on the input reception surface 31a. In this state, the input acceptance surface 31a of the digitizer pen 20 is touched on the input acceptance surface 31a, and after the pen tip 21 is kept stationary for a while, the pen tip 21 is released from the input acceptance surface 31a.

  In the state where the hand holding the digitizer pen 20 is placed on the input receiving surface 31a, it is determined in S31 that touch input is in progress, and in S34, it is determined that the touch area S is greater than or equal to the specified area RS. When the user touches the input acceptance surface 31a with the digitizer pen 20, the processing of S13 and S14 is executed, and subsequently, when the user keeps the stationary state while touching the digitizer pen 20 on the input acceptance surface 31a, , S15 to S17 are repeated, and thereafter, when the user releases the digitizer pen 20 from the input receiving surface 31a, the processes of S20 to S26 are executed. Thereby, the input mode is switched from the multi mode to the pen mode or from the pen mode to the multi mode.

  On the other hand, when the touch input is not received on the touch pad 33, or when the touch input is received, the touch area S is smaller than the specified area RS and is not regarded as the touch input by the hand holding the digitizer pen 20. Even if the digitizer pen 20 is touched on the input acceptance surface 31a, the process does not proceed to the process of S12 and thereafter. Therefore, even if the digitizer pen 20 is released from the input receiving surface 31a after the specified time T1 has elapsed, the input mode is not switched.

  As described above, according to the configuration of the present modified example, when the touch area S in touch input is added to the switching condition of the input mode, the hand holding the digitizer pen 20 of the received touch input is placed on the input reception surface 31a. Since it can be determined with high accuracy whether or not the error is caused by switching, it is possible to further suppress the switching of the input mode due to an erroneous operation not intended by the user.

<Modification 3>
In this modification, if the first switching condition and the second switching condition are in addition to the conditions in the first modification, the change degree C of the touch area S of the touch input received by the touch pad 33 becomes equal to or less than the defined degree RC. Including the conditions of

  FIG. 9 is a flowchart showing an input mode switching process according to this modification. In the input mode switching process of this modified example, the processes of S31 to S33 and S35 are added as compared with the input mode switching process of the above-described embodiment shown in FIGS. 4 and 5. Note that FIG. 9 shows only the process before S35.

  That is, in the present modified example, when it is determined that the touch pad 33 receives a touch input (S31: YES), the control unit 40 determines that the change degree C of the touch area S of the received touch input is It is determined whether it is less than the prescribed degree RC (S35). When the user holds the hand holding the digitizer pen 20 on the input reception surface 31a and brings the tip of the digitizer pen 20 into contact with the input reception surface 31a, the placed hand is likely to stand still and the input reception touched by the hand The area of the area of the surface 31a is unlikely to change. Therefore, when the hand holding the digitizer pen 20 is placed on the input reception surface 31a, the size of the defined degree RC such that the change degree C from the initial stage of the touch area S at that time becomes equal to or less than the defined degree RC. Is set.

  If the change degree C of the touch area S is less than or equal to the specified degree RC (S35: YES), the control unit 40 determines the type of pen input (S12). On the other hand, when the touch input is not received (S31: NO), or when the change degree C of the touch area S of the received touch input exceeds the defined degree RC (S35: NO), the control unit 40 If the start coordinates are set and the timer is activated without performing the process after S12, the start coordinates are erased (S32), and the timer is stopped and reset (S33).

  In this modification, as in the first modification, when the input mode is switched from the multi mode to the pen mode or from the pen mode to the multi mode, the user places the hand holding the digitizer pen 20 on the input reception surface 31a. In this state, the input acceptance surface 31a of the digitizer pen 20 is touched on the input acceptance surface 31a, and after the pen tip 21 is kept stationary for a while, the pen tip 21 is released from the input acceptance surface 31a.

  When the hand holding the digitizer pen 20 is placed on the input acceptance surface 31a, it is determined in S31 that touch input is in progress, and it is determined in S35 that the change degree C of the touch area S is less than the specified degree RC. Therefore, when the user touches the input acceptance surface 31a with the digitizer pen 20, the processing of S13 and S14 is executed, and then the user maintains the stationary state while touching the digitizer pen 20 to the input acceptance surface 31a. When this is done, the processes of S15 to S17 are repeated, and then, when the user releases the digitizer pen 20 from the input acceptance surface 31a, the processes of S20 to S26 are executed. Thereby, the input mode is switched from the multi mode to the pen mode or from the pen mode to the multi mode.

  On the other hand, when the touch input is not received by the touch pad 33 or when the touch input is received, the change degree C of the touch area S is larger than the defined degree RC, and the touch input by the hand holding the digitizer pen 20 is regarded as If the digitizer pen 20 is touched to the input receiving surface 31a when it is not deceived, the process does not proceed to the processing of S12 and thereafter. Therefore, even if the digitizer pen 20 is released from the input receiving surface 31a after the specified time T1 has elapsed, the input mode is not switched.

  As described above, according to the configuration of this modification, the degree of change C of the touch area S in the touch input is added to the switching condition of the input mode, so that the hand holding the digitizer pen 20 receives the input. Since it can be determined with high accuracy whether it is due to being placed in 31a, it is possible to further suppress the switching of the input mode due to an erroneous operation not intended by the user.

<Modification 4>
In this modification, the first switching condition and the second switching condition are in addition to the conditions in the first modification, and the touch position (coordinate position) P1 on the input acceptance surface 31a by the digitizer pen 20 accepted by the digitizer sensor 34 And the condition that the distance L between the position of the touch input accepted by the touch pad 33 (the area gravity center of the touch area S) P2 is equal to or less than the prescribed distance RL,
FIG. 10A is a flowchart showing an input mode switching process according to the present modification, and FIG. 10B is a user according to the present modification using the digitizer pen 20 to perform an input mode switching operation. It is a figure which shows a mode that it is going. In the input mode switching process of this modified example, the processes of S31 to S33, S36, and S37 are added as compared with the input mode switching process of the above-described embodiment shown in FIGS. 4 and 5. In FIG. 10A, only the process before S37 is shown.

  That is, in this modified example, when it is determined that the touch pad 33 receives a touch input (S31: YES), the control unit 40 determines between the coordinate position P1 of the digitizer pen 20 and the position P2 of the touch input. The distance L is acquired (S36). Then, the control unit 40 determines whether the acquired distance L is equal to or less than the prescribed distance RL (S37). The distance L between the coordinate position P1 of the digitizer pen 20 and the position P2 of the touch input when the user places the hand holding the digitizer pen 20 on the input acceptance surface 31a and brings the digitizer pen 20 into contact with the input acceptance surface 31a The size is roughly fixed. Therefore, when the hand holding the digitizer pen 20 is placed on the input reception surface 31a, the distance L between the coordinate position P1 of the digitizer pen 20 and the position P2 of the touch input at that time is equal to or less than the prescribed distance RL. The size of the prescribed distance RL is set.

  If the distance L is less than or equal to the prescribed distance RL (S37: YES), the control unit 40 determines the type of pen input (S12). On the other hand, when the touch input is not received (S31: NO), or when the distance L exceeds the prescribed distance RL (S37: NO), the control unit 40 does not perform the processing after S12 and sets the start coordinates. If the timer is activated, the start coordinates are erased (S32), and the timer is stopped and reset (S33).

  In this modification, as in the first modification, when the input mode is switched from the multi mode to the pen mode or from the pen mode to the multi mode, the user places the hand holding the digitizer pen 20 on the input reception surface 31a. In this state, the input acceptance surface 31a of the digitizer pen 20 is touched on the input acceptance surface 31a, and after the pen tip 21 is kept stationary for a while, the pen tip 21 is released from the input acceptance surface 31a.

  When the hand holding the digitizer pen 20 is placed on the input receiving surface 31a, it is determined in S31 that touch input is in progress, and in S37, the coordinate position P1 of the digitizer pen 20 and the position P2 of the touch input Since it is determined that the distance L is equal to or less than the prescribed distance RL, when the user touches the input reception surface 31a with the digitizer pen 20, the processing of S13 and S14 is executed, and then the user receives the input of the digitizer pen 20 When the stationary state is maintained while touching the surface 31a, the processing of S15 to S17 is repeated, and then, when the user releases the digitizer pen 20 from the input acceptance surface 31a, the processing of S20 to S26 is executed. . Thereby, the input mode is switched from the multi mode to the pen mode or from the pen mode to the multi mode.

  On the other hand, when the touch input is not received by the touch pad 33, or even when the touch input is received, the distance L between the coordinate position P1 of the digitizer pen 20 and the position P2 of the touch input is larger than the prescribed distance RL. If the digitizer pen 20 is not touched as a touch input by the hand holding the icon 20 and the digitizer pen 20 is touched on the input reception surface 31a, the process does not proceed to the processing of S12 and thereafter. Therefore, even if the digitizer pen 20 is released from the input receiving surface 31a after the specified time T1 has elapsed, the input mode is not switched.

  As described above, according to the configuration of the present modification, the touch input received by adding the distance L between the coordinate position P1 of the digitizer pen 20 and the position P2 of the touch input to the switching condition of the input mode causes the digitizer pen 20 to Since it can be determined with high accuracy whether or not the griped hand is placed on the input receiving surface 31a, it is possible to further suppress the switching of the input mode due to an erroneous operation unintended by the user.

<Modification 5>
In the above embodiment, the second switching condition for switching the input mode from the pen mode to the multi mode, the touch on the input receiving surface 31 a by the digitizer pen 20, the range R in which the fluctuation of the position (coordinate position) of the touch is specified It includes the condition of continuing within the specified time T1 while staying within.

  On the other hand, in this modification, the second switching condition includes the condition that the duration of the touch on the input reception surface 31a by the digitizer pen 20 does not exceed the time limit T2 in addition to the conditions in the above embodiment. .

  FIG. 11 is a flowchart showing an input mode switching process according to the present modification. In the input mode switching process of this modified example, the process of S38 is added as compared with the input mode switching process of the above-described embodiment shown in FIGS. 4 and 5.

  That is, in this modified example, when the timer measurement time T0 is equal to or longer than the specified time T1 (S21: YES) and the current input mode is set to the pen mode (S22: pen), the control unit 40 It is determined whether the measurement time T0 is within the time limit T2 (S38). The time limit T2 is set to an upper limit time which can be determined that the user intentionally pressed the input reception surface 31a with the digitizer pen 20 for a long time, for example, about 5 seconds.

  If the measurement time T0 is within the time limit T2 (S38: YES), the control unit 40 switches from the pen mode to the multi mode (S24). On the other hand, if the measurement time T0 exceeds the time limit T2 (S38: NO), the control unit 40 does not switch the input mode.

  In the state where the pen mode is set, a situation in which the user thinks while keeping the pen tip 21 of the digitizer pen 20 in contact with the input acceptance surface 31 a while the user is inputting characters and the like using the digitizer pen 20 Since the duration time of the touch becomes long when a occurs, it is determined in S38 that the measurement time T0 has exceeded the time limit T2. Therefore, even if such a situation occurs, the input mode does not switch from the pen mode to the multi mode.

  As described above, according to the configuration of the present modification, by adding the time limit T2 to the switching condition (second switching condition) from the pen mode to the multi mode, the pen mode to the multi mode is mistakenly made, not the user's intention. It is possible to prevent switching.

Other Modifications
In the above embodiment, the input using the pen is performed by the electromagnetic digitizer pen 20 and the digitizer sensor 34, but may be performed by a handwriting input device of another type. Further, in the above embodiment, the touch pad 33 is a capacitive touch pad, but may be a touch pad of another type such as a pressure sensitive type or a light detection type.

  In the above embodiment, when the touch pad 33 detects a touch input, the coordinate signal and the area signal are transmitted from the touch pad 33 to the control unit 40 by a hardware interrupt. However, the present invention is not limited to this, and the coordinate signal and the area signal may be transmitted from the touch pad 33 to the control unit 40 by the control unit 40 inquiring the touch pad 33 at regular intervals.

  Furthermore, in the above embodiment, when the pen mode is set, the control unit 40 invalidates the touch input by ignoring the touch input received by the touch pad 33. However, the control unit 40 may disable touch input by stopping the touch pad 33 so that the touch pad 33 does not receive touch input.

  Furthermore, in the above embodiment, the defined range R, which is the same range (threshold), is used as the first predetermined range included in the first switching condition and the second predetermined range included in the second switching condition. Further, as the first predetermined time included in the first switching condition and the second predetermined time included in the second switching condition, the defined time T1 which is the same time (threshold) is used. However, different ranges may be used for the first predetermined range and the second predetermined range, and different times may be used for the first predetermined time and the second predetermined time.

  Furthermore, the above-described modifications 2 to 4 can be combined as appropriate. Further, the fifth modification may be combined with the first to fourth modifications.

  Furthermore, in the fifth modification, the time limit T2 is added to the second switching condition, but the time limit T2 may be added to the first switching condition. In this case, it may be determined in S21 whether or not the timer measurement time T0 is equal to or longer than the specified time T1 and is within the time limit T2.

  Furthermore, in the first to fourth modifications, the touch input is received on the touch pad 33 in all periods from when the digitizer pen 20 is touched to the input receiving surface 31a to when the digitizer pen 20 is released from the input receiving surface 31a. Conditions are included in the first switching condition and the second switching condition. However, when digitizer pen 20 is touched on input acceptance surface 31a or released from input acceptance surface 31a, the digitizer pen 20 continues to touch input acceptance surface 31a at least at a part while the specified time T1 or more continues. The condition that the touch input is accepted by the touch pad 33 in the period of 1 may be included in the first switching condition and the second switching condition.

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

1 information terminal device 20 digitizer pen (writing instrument)
30 Touch panel (input reception unit)
31a input acceptance surface 32 liquid crystal display (display)
33 Touch Pad (1st Reception Section)
34 Digitizer Sensor (2nd Reception)
40 Control unit R Specified range (1st predetermined range, 2nd predetermined range)
T1 specified time (1st predetermined time, 2nd predetermined time)
RS specified area (predetermined area)
RC prescribed degree (predetermined degree)
RL specified distance (predetermined distance)
T2 time limit (3rd predetermined time)
C1 Multi mode notification icon (image)
C2 pen mode notification icon (image)

Claims (9)

An input receiving unit including a first receiving unit that receives a touch input via an input receiving surface; and a second receiving unit that receives an input by a writing instrument via the input receiving surface;
And a control unit,
The control unit is configured such that when the input by the writing tool and the first mode for validating the touch input are set, the input receiving unit receives the input satisfying the first switching condition. While switching from the first mode to a second mode in which the input by the writing instrument is enabled and the touch input is disabled,
The first switching condition includes a condition that a touch on the input receiving surface by the writing instrument continues for a first predetermined time or more in a state in which a change in the position of the touch remains within a first predetermined range.
An information terminal device characterized by In the information terminal device according to claim 1,
The first switching condition is a condition that the first reception unit receives the touch input during at least a part of a period during which the touch on the input reception surface by the writing instrument continues for the first predetermined time or more. including,
An information terminal device characterized by In the information terminal device according to claim 2,
The first switching condition includes a condition that a touch area in the touch input received by the first reception unit during the at least one portion is equal to or larger than a predetermined area.
An information terminal device characterized by In the information terminal device according to claim 2 or 3,
The first switching condition includes a condition that the change degree of the touch area in the touch input received by the first reception unit during the at least one part is equal to or less than a predetermined degree.
An information terminal device characterized by In the information terminal device according to any one of claims 2 to 4,
The first switching condition is such that the distance between the position of the touch on the input reception surface by the writing instrument and the position of the touch input received by the first reception unit during the at least one part is equal to or less than a predetermined distance Including conditions with
An information terminal device characterized by In the information terminal device according to any one of claims 1 to 5,
When the second mode is set, the control unit switches from the second mode to the first mode based on the input receiving unit receiving an input satisfying the second switching condition. ,
The second switching condition includes a condition that a touch on the input receiving surface by the writing instrument continues for a second predetermined time or more in a state in which a change in the position of the touch remains within a second predetermined range.
An information terminal device characterized by In the information terminal device according to claim 6,
The second switching condition is a condition that the first reception unit receives the touch input in at least a part of a period while the touch on the input reception surface by the writing instrument continues for the second predetermined time or more. including,
An information terminal device characterized by In the information terminal device according to claim 6 or 7,
The second switching condition includes a condition that a duration of a touch on the input receiving surface by the writing instrument does not exceed a third predetermined time which is longer than the second predetermined time.
An information terminal device characterized by The information terminal device according to any one of claims 1 to 8.
Further comprising a display unit,
The control unit causes the display unit to display an image according to switching between the first mode and the second mode.
An information terminal device characterized by

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