JP2011095925A - Input device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an input device capable of diverting an existing application program configuring a user interface, and improving an operational feeling to be given to an operator. <P>SOLUTION: The input device 1 includes: a touch sensor 40; a load detection part 60 for detecting a pressing load to the touch face of the touch sensor 40; a display part 30; a display change detection part 16 for detecting the change of the display image of the display part 30; a tactile sensation presentation part 50 for vibrating the touch face of the touch sensor 40; and a control part 10 for, when the pressing load satisfying a load reference presenting a tactile sensation is detected by the load detection part 60 in a state where the change of the display image due to input to the touch face is detected by the display change detection part 16, controlling the tactile sensation presentation part 50 to present a tactile sensation to a pressurization object pressing the touch face. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an input device including a touch sensor.

  2. Description of the Related Art In recent years, in portable terminals such as mobile phones, there are some devices that employ an input device including a touch sensor such as a touch panel or a touch switch as an input device such as an operation unit or a switch that receives an operation input by a user. In addition to portable terminals, input devices equipped with touch sensors are widely used in information devices such as calculators and ticket machines, household appliances such as microwave ovens, televisions, and lighting equipment, and industrial equipment (FA devices). .

  As such a touch sensor, various systems such as a resistive film system, a capacitance system, and an optical system are known. However, any type of touch sensor accepts a touch input by a finger or a stylus pen, and the touch sensor itself is not physically displaced like a push button switch even when touched.

  As described above, even if the touch sensor is touched, the touch sensor itself is not physically displaced. Therefore, even if the touch input is accepted, the operator cannot obtain feedback for the input. For this reason, the operator cannot obtain an operational feeling when performing the operation input, and is likely to repeatedly input such as touching the same position many times, which may give stress to the operator.

  As a device for preventing such unnecessary repeated input, for example, a device that receives a touch input and makes a sound is known. In addition, for example, a display mode is changed by changing the display color of an input object such as an input button displayed as an image on a display unit corresponding to the input position. If such a thing is used, the operator can confirm input operation by hearing or vision.

  However, the feedback method that works on hearing is difficult to confirm in a noisy environment and cannot be used when the device in use is in a mute state such as the manner mode. In addition, in the case of a feedback method that works visually, if the size of the input object displayed on the display unit is small, the input object is hidden under the finger and changes the display mode, especially when inputting with the finger. May not be confirmed.

  Therefore, a feedback method has also been proposed in which when the touch sensor accepts an input regardless of hearing or vision, the touch sensor is vibrated to present a tactile sensation to the fingertip of the operator (for example, Patent Document 1 and Patent Document 2).

JP 2003-288158 A JP 2008-130055 A

  According to the techniques disclosed in Patent Literature 1 and Patent Literature 2, when an operation input to the touch sensor is received, a tactile sensation due to vibration can be presented to the fingertip of the operator. Therefore, an operator who performs input using such an input device can recognize by touch that the operation input performed on the touch sensor has been properly received by the input device.

  However, in order to present a tactile sensation when an operation input is received using such an input device, a process of presenting a tactile sensation according to a predetermined condition is preliminarily described as an application program (hereinafter simply referred to as “application”). ) Must be included. In other words, in the above-described input device, if an application developed in advance for generating vibration is used, a tactile sensation can be presented according to a predetermined condition. However, even if an application that is not supposed to generate vibration is applied as it is to the above-described input device, the tactile sensation cannot be presented appropriately.

  Therefore, in order to present a tactile sensation appropriately according to a predetermined condition in the input device as described above, a new application is developed or a process for presenting a tactile sensation is added to an existing application. Need to be modified.

  Specifically, a process for the input device to present a predetermined tactile sensation when an input is made to a touch sensor corresponding to the position of an object such as a key or button displayed on the display unit of the input device. Need to be added. It is also necessary to prevent the input device from presenting a tactile sensation even when an input is made to a touch sensor corresponding to a position where an object such as a key or button is not displayed on the display unit. By controlling the presence or absence of the tactile sensation in this way, when an operation input is received by a user interface using a touch sensor and a GUI (Graphical User Interface) for input / output, the tactile sensation due to vibration is applied to the fingertip of the operator. Can be presented. That is, an input to an object such as an image-displayed key or button can be notified by presenting a tactile sensation that the input has been accepted. On the other hand, it is possible to prevent feedback even if an input is made to a position where there is no object such as a key or button.

  When performing such control, the input device cooperates with an application that manages the state of the GUI when an input is made to the touch sensor, that is, the state of an object such as a key or button displayed on the display unit. It becomes necessary to do.

  Hereinafter, a process assumed when presenting a tactile sensation will be described. FIG. 7 is a block diagram showing a schematic configuration of an assumed input device. As illustrated in FIG. 7, the input device 100 includes a control unit 110, an application execution unit 120, a display unit 130, a touch sensor 140, and a tactile sensation providing unit 150. The control unit 110 includes a display control unit 112 and a tactile sensation control unit 114.

  The control unit 110 controls the entire input device 100 including each functional unit of the input device 100. The application execution unit 120 reads various applications from a storage unit (not shown) and executes processing based on the applications. In the following description, the application executed by the application execution unit 120 presents a predetermined tactile sensation when an input is made to the touch sensor 140 corresponding to the position of the input object displayed on the display unit 130. It is assumed that the processing to be performed is added in advance.

  The display unit 130 is configured by a liquid crystal display, an organic EL display, or the like, and displays an image of an object such as a key or button for inputting. The touch sensor 140 is normally disposed on the front surface of the display unit 130 and receives touch input by an operator's finger or the like on the object displayed on the display unit 130 from the touch surface of the corresponding touch sensor 140. The touch sensor 140 notifies the application execution unit 120 of the position of the touch input received through the touch surface via the control unit 110. The tactile sensation providing unit 150 is configured by a small eccentric motor, a piezoelectric element, or the like, and presents a tactile sensation to a touch target such as an operator's finger by vibrating the touch surface of the touch sensor 140.

  Based on the display data supplied from the application execution unit 120, the display control unit 112 of the control unit 110 displays an image such as an object on the display unit 130, or changes the display mode of the image. Control the display. The tactile sensation control unit 114 supplies a vibration pattern based on a predetermined condition to the tactile sensation presentation unit 150 based on an instruction from the application execution unit 120.

  FIG. 8 is a flowchart schematically illustrating an example of an operation for controlling the presentation of tactile sensation by the input device 100.

  When a touch input to the touch surface of the touch sensor 140 is detected, an operation for controlling presentation of tactile sensation by the input device 100 is started. When this operation starts, first, the touch sensor 140 notifies the application execution unit 120 of the position of the touch input on the touch surface (step S100). Upon receiving this notification, the application execution unit 120 determines whether or not the input position corresponds to a position where an image such as a key or a button is displayed on the display unit 130 (step S102). In step S102, when the input position does not correspond to the position where an image of an object such as a key or a button is displayed on the display unit 130, the application execution unit 120 ends the operation without giving an instruction regarding display or touch.

  On the other hand, in step S102, when the input position corresponds to a position where an image of an object such as a key or button is displayed, the application execution unit 120 displays to the display control unit 112 that the input has been accepted. Provide display data to perform The display indicating that the input has been accepted can be visually recognized by the operator, for example, by highlighting an object such as a key or a button for a moment or displaying an image showing a state where a key or a button is pressed. It is to display like this. When receiving such display data, the display control unit 112 changes the image displayed on the display unit 130 based on the display data (step S104).

  Subsequently, the application execution unit 120 instructs the tactile sensation control unit 114 to present a predetermined tactile sensation in order to notify the operator that the input has been accepted. The presentation of a predetermined tactile sensation here means providing feedback that can be recognized by the tactile sense of the operator, such as vibrating the touch surface of the touch sensor 140 for a moment. Upon receiving such a tactile sensation presentation instruction, the tactile sensation control unit 114 controls the tactile sensation presentation unit 150 to present a predetermined vibration pattern in accordance with the instruction. Accordingly, the tactile sensation providing unit 150 presents a tactile sensation with a predetermined vibration pattern to the touch target touching the touch surface of the touch sensor 140 (step S106). By performing such processing, the input device 100 can present a tactile sensation only when an operation input for an object that accepts an input is received by a user interface that employs a touch sensor and a GUI when inputting. .

  Hereinafter, another example of the operation when presenting the tactile sensation in the assumed input device will be described.

  In the example described above, every time there is an input to the touch sensor 140, the application execution unit 120 determines whether or not the input is an input corresponding to the position of the object. In the following example, before the input reception is started (that is, as a premise of the operation in FIG. 8), the application execution unit 120 presets an operation for presenting a tactile sensation according to a predetermined condition to the tactile sensation control unit 114. Keep it. For example, various conditions such as presenting a tactile sensation in response to an input to a touch sensor corresponding to a position where an object such as a button is displayed, or presenting a tactile sensation in a different form depending on the type of the object, may It is set in the control unit 114. Also, such settings can be updated as the GUI changes. That is, after the input to the button object, the tactile sensation to be presented when the input is further received or the tactile sensation to be presented after changing to another user interface can be defined in advance.

  With this setting, the application execution unit 120 determines whether or not the input corresponds to the position of the object each time the touch sensor 140 receives an input in the operations of Step S100 and Step S102 described above. There is no need to judge. In this case, in step S100, the touch sensor 140 notifies the tactile sensation control unit 114 of the input position. In step 102, the tactile sensation control unit 114 determines whether the input is an input corresponding to the position of the object. ,judge. Other operations can be performed in the same manner as in the above-described example. With such an operation, it is possible to reduce the processing load on the application execution unit 120 regarding whether or not a tactile sensation is presented.

  Hereinafter, still another example of the operation when presenting the tactile sensation in the assumed input device will be described.

  In the example described above, the application execution unit 120 makes a determination regarding the presentation of tactile sensation for each input by presetting the tactile sensation control unit 114 with an operation that presents a predetermined tactile sensation according to a predetermined condition. I didn't have to. However, in order to change the image of the object displayed on the display unit 130 by the display control unit 112 in step S104 of FIG. 8, whether or not the position of the touch input corresponds to the position of the object is also executed by the application. It is necessary for the unit 120 to determine. Therefore, before the input reception is started (that is, as a premise of the operation in FIG. 8), the application execution unit 120 also sets in advance an operation for changing the display of the object according to a predetermined condition with respect to the display control unit 112. It is possible to keep it.

  In this case, when an input to the touch sensor 140 is detected in the operation of step S100 described above, the touch sensor 140 notifies the tactile sensation control unit 114 of the input position and also the display control unit 112. When the input is an input corresponding to the position of the object, the display control unit 112 controls the display unit 130 to change the display of the object. Other processing can be performed in the same manner as in the above-described example. With such an operation, not only the tactile sensation but also the display can reduce the processing load on the application execution unit 120.

  As described above, even when the application execution unit instructs processing corresponding to each input, or when an operation corresponding to the input is set in another function unit in advance, the application presents a tactile sensation. The above-described operation can be performed without problems. In other words, if the application incorporates a process for presenting a tactile sensation in advance, a predetermined tactile sensation can be appropriately presented by the above-described operation.

  However, in the input device 100 described above, when an application that does not support tactile sensation is applied, even if the object changes based on the input, the tactile sensation cannot be appropriately presented in the state as it is. Therefore, in order to effectively use various application resources developed so far without wasting them in the input device 100, a process of modifying each application and presenting a tactile sensation according to a predetermined condition Must be added. Such modification to add processing must be performed for each of various applications, and there is a concern that it takes enormous effort and cost.

  Under such circumstances, it may become a factor that hinders vendors from entering the development of applications for input devices that present tactile sensations, and delays in the spread of platforms that use touch sensors and GUIs. Can be.

  For example, the techniques disclosed in Patent Document 1 and Patent Document 2 merely vibrate the touch sensor according to the input when the touch sensor accepts the input. For this reason, in the technologies disclosed in Patent Document 1 and Patent Document 2, even if an application corresponding to the tactile sensation is applied, the tactile sensation cannot be properly presented only when necessary in the state as it is. Is also envisaged. In particular, when a button switch such as a mechanical push button switch (push button switch) is drawn on the top of the touch sensor, a finger touches the touch sensor lightly when the threshold for accepting input from the touch sensor is low. A tactile sensation is presented just by touching. For this reason, since it reacts to the operation | movement (touch) lightly touched before an operator pushes a touch sensor, unlike the reaction of a drawing image (push button), there exists a possibility of inducing a misoperation. In addition, even if the operator does not intend to push the drawn button switch (even if no force is applied), a tactile sensation is presented according to the light touching operation (touch) before pushing the touch sensor. As a result, the operator feels uncomfortable. Here, the threshold value for accepting an input by touch of the touch sensor is a threshold value at which the touch sensor reacts. In the method, it is a detection threshold value of an electrical signal by contact.

  Furthermore, even if a conventional input device adopts a user interface based on an application in which processing for presenting a tactile sensation by a touch sensor is adopted in advance, an operation feeling like a mechanical push button switch is accepted when an input is received. Could not provide. That is, the tactile sensation presented by the conventional input device is only to notify the operator that the input has been accepted, and merely performs an operation such as vibrating the touch surface. Therefore, the tactile sensation presented by the conventional input device does not provide the operator with the operational feeling as when operating a mechanical push button switch.

  However, in a user interface that employs a touch sensor and a GUI, an image of an object following a mechanical push button switch or the like is often displayed. Therefore, when an input to such an object is received, it is more preferable as an operational feeling given to the operator to present a tactile sensation following the mechanical push button switch. When a pressing input is received for the displayed object, if feedback can be returned as if an actual key or button was clicked, the operational feeling given to the operator can be improved.

  In the case of a mechanical push button switch, an operator obtains a tactile sensation (hereinafter referred to as a click tactile sensation) when the switch is depressed and a metal dome switch or the like is buckled by applying a certain amount of pressing force. Can do. Similarly, in the case of a mechanical push button switch, the operator feels that the metal dome switch or the like returns to the original unpressed state by reducing the pressing force applied to the pressed switch to a certain extent (hereinafter referred to as the “down”). Release feel). In the case of a mechanical push button switch, even if the operator touches the pressed position with a very weak pressing force (even if touched), no click feeling is presented, and no click feeling is presented. , The release feel is not presented. In an input device that employs a conventional touch sensor and GUI, it has not been possible to present the click feel and release feel as described above.

  Accordingly, an object of the present invention made in view of such circumstances is to provide an input device capable of diverting an existing application constituting a user interface and improving the operational feeling given to an operator. It is in.

The invention of the input device according to the first aspect to achieve the above object is as follows:
A touch sensor;
A load detection unit for detecting a pressing load on the touch surface of the touch sensor;
A display unit;
A display change detection unit for detecting a change in a display image of the display unit;
A tactile sensation providing unit that vibrates the touch surface of the touch sensor;
In a state where the display change detection unit detects a change in a display image due to an input to the touch surface, when the load detection unit detects a pressing load that satisfies a load standard for presenting tactile sensation, the touch surface is pressed. A control unit for controlling the tactile sensation providing unit so as to present a tactile sensation with respect to the pressed object;
It is characterized by providing.

The invention according to a second aspect is the input device according to the first aspect,
The control unit is configured to control the tactile sensation providing unit so as to present a tactile sensation to the pressing target when the display change detection unit detects a change in a display image within a predetermined range from the input.

The invention according to a third aspect is the input device according to the first or second aspect,
The control unit is configured to control the tactile sensation providing unit so as to present a tactile sensation to the pressing target when the display change detecting unit detects a change in a display image within a predetermined time from the input.

The invention according to a fourth aspect is the input device according to any one of the first to third aspects,
The said control part controls the said tactile sensation presentation part so that the tactile sensation based on the change of the said display image is shown with respect to the said press target.

An invention according to a fifth aspect is the input device according to the fourth aspect,
The said control part controls the said tactile sensation presentation part so that the tactile sensation based on the change of the color of the said display image is shown with respect to the said press target.

The invention according to a sixth aspect is the input device according to the fourth aspect,
The said control part controls the said tactile sensation presentation part so that the tactile sensation based on the change speed of the said display image is shown with respect to the said press target.

  According to the present invention, an appropriate tactile sensation can be presented according to a predetermined condition even if an application that does not assume a process of presenting a tactile sensation in advance is used without modification. Therefore, according to the present invention, an existing application can be used without being wasted, and a user interface with excellent operability can be provided using such an application. In addition, according to the present invention, when an input to the touch sensor is received, a tactile sensation like a mechanical push button switch can be presented. Therefore, according to the present invention, the operational feeling given to the operator can be improved.

It is a block diagram which shows schematic structure of the input device which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the mounting structure of the input device shown in FIG. It is a flowchart which shows operation | movement of the input device shown in FIG. It is a flowchart which shows operation | movement of the input device which concerns on 2nd Embodiment of this invention. It is a flowchart which shows operation | movement of the input device which concerns on 3rd Embodiment of this invention. It is a block diagram which shows schematic structure of the input device which concerns on the modification of this invention. It is a block diagram which shows schematic structure of the input device by a prior art. It is a flowchart which shows operation | movement of the input device by a prior art.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the present invention, when there is a change in an image (object) displayed on the display unit by a touch input to the touch sensor, based on the change in the image (that is, assuming that an input to the object has been made) It presents a tactile sensation. In addition, when presenting a tactile sensation, the present invention does not present a tactile sensation to a pressure that touches (touches) the touch sensor lightly, and the operator intentionally presses the touch sensor. Present a tactile sensation to the (push) action.

(First embodiment)
FIG. 1 is a block diagram showing a schematic configuration of an input device according to the first embodiment of the present invention.

  As illustrated in FIG. 1, the input device 1 includes a control unit 10, an application execution unit 20, a display unit 30, a touch sensor 40, a tactile sensation providing unit 50, and a load detection unit 60. The control unit 10 includes a display control unit 12, a tactile sensation control unit 14, and a display change detection unit 16.

  The control unit 10 controls the entire input device 1 including each functional unit of the input device 1. In the present embodiment, the control unit 10 is described as performing control mainly related to the tactile sensation. To do. The application execution unit 20 reads various applications from a storage unit (not shown) and executes processing based on the applications. In the present embodiment, a case will be described in which application execution unit 20 executes an application that does not support tactile sensation.

  The display unit 30 displays an input object such as a push button switch (push button switch) as an image. Note that the push button switch is an input button, a key, or the like (hereinafter simply referred to as “key or the like”). The display unit 30 is configured using, for example, a liquid crystal display panel, an organic EL display panel, or the like.

  The touch sensor 40 is usually arranged on the front surface of the display unit 30, and a touch input by the operator's finger or the like (press target) on the object displayed on the display unit 30 is touched by the corresponding touch sensor 40. Accept by surface. The touch sensor 40 detects the position of the touch input with respect to the touch surface, and notifies the application execution unit 20 or the like of the detected input position via the control unit 10 (display change detection unit 16). The touch sensor 40 is configured by a known method such as a resistive film method, a capacitance method, and an optical method.

  The tactile sensation providing unit 50 is configured using a piezoelectric vibrator or the like, and generates vibration on the touch surface of the touch sensor 40. The tactile sensation providing unit 50 presents a tactile sensation to the pressing target pressing the touch surface by generating vibration on the touch surface of the touch sensor 40. The load detection unit 60 detects a pressing load on the touch surface of the touch sensor 40, and is configured using an element that reacts linearly with a load such as a strain gauge sensor or a piezoelectric element, for example. In addition, the load detection unit 60 notifies the tactile sensation control unit 14 of the detected pressing load on the touch surface of the touch sensor 40.

  Based on the display data supplied from the application execution unit 20, the display control unit 12 of the control unit 10 displays an object or the like on the display unit 30 or changes the image display. Take control. The tactile sensation control unit 14 determines whether or not the pressing load detected by the load detection unit 60 satisfies a load standard for presenting a tactile sensation. In addition, when the tactile sensation control unit 14 detects an instruction from the display change detection unit 16 and a pressing load that satisfies the load standard for presenting the tactile sensation described above, the tactile sensation control unit 14 generates a predetermined pattern of vibration based on a predetermined condition. The presenter 50 is controlled.

  The display change detection unit 16 analyzes an image displayed on the display unit 30 and detects a change in the image. As the display change detection unit 16 itself, for example, those based on various existing image analysis techniques such as comparing images at predetermined time intervals to detect changes with time can be used. Further, the parameters related to the change can be various existing parameters such as presence / absence of display in a specific region or pixel (pixel) at a specific point, a change in color, a change in luminance and brightness, and the like.

  2A and 2B show an example of the mounting structure of the input device 1 shown in FIG. 1, FIG. 2A is a cross-sectional view of the main part, and FIG. 2B is a plan view of the main part. The display unit 30 is housed and held in the housing 61. The touch sensor 40 is held on the display unit 30 via an insulator 62 made of an elastic member. In the input device 1 according to the present embodiment, the display unit 30 and the touch sensor 40 are rectangular in plan view. In addition, the input device 1 holds the touch sensor 40 on the display unit 30 via the insulators 62 disposed at the four corners deviated from the display area A of the display unit 30 indicated by virtual lines in FIG. .

  The casing 61 is provided with an upper cover 63 so as to cover the surface area of the touch sensor 40 that is out of the display area of the display unit 30, and is made of an elastic member between the upper cover 63 and the touch sensor 40. An insulator 64 is provided. In the touch sensor 40 shown in FIG. 2, the surface member having the touch surface 40a is made of, for example, a transparent film or glass, and the back member is made of glass or acrylic. The touch sensor 40 has a structure in which, when the touch surface 40a is pressed, the pressed portion is slightly bent (distorted) in accordance with the pressing force, or the structure itself is bent slightly.

  On the surface of the touch sensor 40, a strain gauge sensor 51 for detecting a load (pressing force) applied to the touch sensor 40 is provided in the vicinity of each side covered with the upper cover 63 by adhesion or the like. Further, on the back surface of the touch sensor 40, piezoelectric vibrators 52 for vibrating the touch sensor 40 are provided by adhesion or the like in the vicinity of two opposing sides. That is, in the input device 1 shown in FIG. 2, the load detection unit 60 shown in FIG. 1 is configured using four strain gauge sensors 51, and the tactile sensation providing unit 50 is configured using two piezoelectric vibrators 52. ing. The touch surface 40a is vibrated by vibrating the touch sensor 40 by the tactile sensation providing unit 50. In FIG. 2B, the casing 61, the upper cover 63, and the insulator 64 shown in FIG. 2A are not shown.

  Next, the operation of the input device according to this embodiment will be described.

  The input device 1 according to the present embodiment has a tactile sensation when an input pressing load on the touch sensor 40 satisfies a predetermined standard in a state where an image displayed on the display unit 30 is changed by an input to the touch sensor 40. Is presented. This is because when an input is made to the touch sensor 40 corresponding to the position of the image of the object displayed on the display unit 30 to make the operator visually recognize that the touch input is accepted by the object, Based on changing and displaying the object image. Such an image that changes the image of the object can be displayed by changing the color or brightness of the object depending on the application. Embodiments are possible. Also, when the input pressing load on the touch sensor 40 satisfies a predetermined standard, the tactile sensation is presented in such a case where the operator intentionally presses (pushes) the touch sensor. Based on what can be seen.

  FIG. 3 is a flowchart showing the operation of the input apparatus 1 according to the present embodiment. The operation of the input device 1 according to the present embodiment can be separated into an operation involving the application execution unit 20 and an operation not involving the application execution unit 20. 3, FIG. 3 (A) shows an operation involving the application execution unit 20, and FIG. 3 (B) shows an operation not involving the application execution unit 20.

  In performing the operation of the input apparatus 1 according to the present embodiment, it is assumed that an image of an object such as a key is displayed on the display unit 30 in advance in order to accept an input with an operator's finger or the like. At this time, the application execution unit 20 supplies display data of each object constituting the GUI to the display control unit 12 via the display change detection unit 16. Then, the display control unit 12 controls the display unit 30 to display (draw) an image of each object based on the display data of the object supplied from the application execution unit 20. As described above, the application used for the operation of the input device 1 according to the present embodiment is an existing application that configures a GUI using a touch sensor and does not support presentation of tactile sensation. The case of using will be described. It is assumed that this application displays the object image with some change when a touch input is made to the touch sensor 40 corresponding to the position of the object image displayed on the display unit 30.

  When starting the operation of the input device 1 according to the present embodiment, first, the control unit 10 monitors the presence or absence of touch input to the touch sensor 40. At the same time, the control unit 10 controls the display change detection unit 16 to monitor a change in an image (display image) displayed on the display unit 30.

  The operation of the input device 1 according to the present embodiment starts from the point in time when the touch input of the touch sensor 40 by the operator's finger or the like is made in the state where the preparation as described above is completed.

  First, as shown in FIG. 3A, when the operation of the input device 1 according to the present embodiment starts, the touch sensor 40 notifies the control unit 10 of the position of the touch input with respect to the touch surface (step S10). . The control unit 10 notifies the application execution unit 20 via the display change detection unit 16 of the input position thus detected.

  When the position of the touch input in the touch sensor 40 is notified, the application execution unit 20 determines whether or not the position of the input corresponds to a position where an image of an object such as a key is displayed in the current GUI ( Step S12). In step S12, when the input position corresponds to the position where the object image is displayed, the application execution unit 20 sends display data for changing the object image to the display control unit 12 according to the setting based on the application. . When receiving the display data, the display control unit 12 controls the display unit 30 to change the image of the displayed object (step S14). That is, when there is a touch input to an object such as a key, the display image of the object is changed. When changing the display image of an object, for example, the operator makes a display as if the object is selected, or changes the color or brightness of the object, so that the operator touches (touches) a key or the like. It is preferable to make it visible.

  On the other hand, if the input position does not correspond to the position where the object image is displayed in step S12, the application execution unit 20 ends the process without giving an instruction to change the object image. That is, when there is no touch input for an object such as a key, or when the touch input is not for an object such as a key, the application execution unit 20 ends the process without changing the display image of the object. In this case, the image (display image) displayed on the display unit 30 does not change.

  FIG. 3B is a flowchart illustrating an operation subsequent to FIG. After the operation shown in FIG. 3A is completed, the display change detection unit 16 analyzes the image (display image) displayed on the display unit 30 as shown in FIG. The presence or absence of change is detected (step S20). Alternatively, at this time, the display change detection unit 16 may determine whether the display image has changed based on the display data supplied from the application execution unit 20 to the display control unit 12 via the display change detection unit 16. Good.

  When a change in the display image is detected in step S20 (that is, when there is a touch input to an object such as a key), the process proceeds to step S22. In step S <b> 22, the tactile sensation control unit 14 determines whether or not the pressing load detected by the load detection unit 60 satisfies a predetermined criterion while increasing due to the pressing of the touch sensor 40 against the touch surface. For example, the load detection unit 60 detects the load from the average value of the outputs of the four strain gauge sensors 51. Here, the load satisfying the predetermined standard is set in advance to a value such as 1N (Newton) based on the pressing load when the operator performs a normal pressing operation, and the setting can be changed thereafter. Is preferred. In addition, the predetermined standard is set so as not to set an excessively low standard in consideration of a pressing load at the time of pressing input based on the operator's intention (for example, an average value). This is to prevent an operation when the operator touches lightly unintentionally as a push (push) input, and to give the operator a pressure sensation for realistic tactile sensation described later. It is.

  When the pressing load satisfies a predetermined standard in step S22, the tactile sensation control unit 14 generates a predetermined vibration on the touch surface of the touch sensor 40 under the control of the control unit 10 so as to present a tactile sensation. The unit 50 is controlled (step S24). In other words, the control unit 10 detects a pressing load that satisfies a load standard that the load detection unit 60 presents a tactile sensation in a state where the display change detection unit 16 detects a change in the display image due to an input to the touch surface of the touch panel 40. Then, the tactile sensation providing unit 50 is controlled so as to present a tactile sensation with respect to the pressing target pressing the touch surface. By this control, the tactile sensation providing unit 50 presents a tactile sensation to the pressing target pressing the touch surface of the touch sensor 40.

  In the present embodiment, the tactile sensation presented by the tactile sensation providing unit 50 to the pressed object in step S24 can be the click sensation described above. In order to present a realistic click tactile sensation to the operator, the input device 1 stimulates the tactile sense in a state where the operator's pressure sense is stimulated. That is, the input device 1 stimulates the pressure sense until the load applied to the touch sensor 40 satisfies a reference (for example, 1N) that provides tactile sensation. The touch surface 40a is vibrated by being driven by the drive signal to stimulate the sense of touch. Thereby, the input device 1 can present to the operator a click feeling similar to that obtained when a button switch such as a push button switch (push button switch) is pressed. Therefore, even if the push button switch is drawn on the upper part of the touch sensor, the operator can perform an input operation on the touch sensor 40 while obtaining a realistic click feeling similar to that when the push button switch is operated. Can not feel uncomfortable. Further, since the input operation can be performed in conjunction with the consciousness of “pressing” the touch sensor 40, an input error due to simple pressing can be prevented.

  The drive signal when presenting the click sensation described above, that is, the constant frequency, period (wavelength), waveform, and amplitude for stimulating the sense of touch can be set as appropriate according to the click sensation presented. For example, when a tactile sensation represented by a metal dome switch used in a portable terminal is presented, for example, the tactile sensation providing unit 50 is driven by a drive signal for one cycle including a sine wave having a constant frequency of 170 Hz. The tactile sensation providing unit 50 is driven by such a drive signal, and the touch surface 40a is vibrated by about 15 μm in a state where a reference pressing load is applied. Thereby, it is possible to present the operator with a realistic click feeling as if the user had clicked on an actual key.

  When the pressing load does not satisfy the predetermined standard in step S22, the tactile sensation control unit 14 has zero pressing load detected by the load detection unit 60 due to weakening of the touch sensor 40 against the touch surface. It is determined whether or not (step S26). If the pressure load detected by the load detection unit 60 is not yet zero in step S26, the touch input to the touch sensor 40 by the operator has not been released (released), and the process returns to step S22. On the other hand, when the pressing load detected by the load detection unit 60 in step S26 becomes zero, it can be determined that the operator has released (released) the touch input to the touch sensor 40. finish. Note that the operation in step S26 is an operation for determining whether or not an input to the touch panel 40 is still detected, instead of an operation for determining whether or not the pressing load detected by the load detection unit 60 has become zero. You can also

  On the other hand, when a change in the display image is not detected in step S20 (that is, when there is no touch input to an object such as a key), the display change detection unit 16 does not give an instruction to the tactile sensation control unit 14 to present tactile sensation. The process ends. As described above, the input device 1 according to the present embodiment provides the operator with no tactile sensation indicating that no pressing input to the object is accepted even if there is an input to a position other than the object such as a key. Can be recognized. In addition, even if a change in the display image is detected in step S20, the operation according to the present embodiment is performed even when the pressing load detected by the load detection unit 60 does not satisfy the load standard for presenting a tactile sensation in step S22. Do not do.

  As described above, according to the present embodiment, the operation from detection of input to the touch sensor to presence / absence of tactile sensation can be considered separately in two stages. An operation that does not involve the execution unit can be performed. Therefore, even when the running application does not support the operation related to the tactile sensation, the control unit 10 presents the tactile sensation based on the press input in the touch sensor 40 corresponding to the object displayed on the display unit 30. The presence or absence of can be controlled appropriately. Therefore, according to the input device 1 according to the present embodiment, it is possible to present a tactile sensation when accepting an input to the touch sensor, and it is possible to divert an existing application program constituting the user interface without modification. it can. In addition, the input device 1 according to the present embodiment allows the operator to recognize that an input to the object has been accepted by an input of pressing (pushing) the object such as a key by a real click tactile sense. Can do.

  In the above-described embodiment, only the touch feeling when the touch sensor is pressed has been described. However, the release touch feeling is presented in the middle of the release (release) of the pressed touch sensor. You can also In this case, the tactile sensation control unit 14 controls the tactile sensation providing unit 50 to present a release tactile sensation when the pressing load detected by the load detection unit 60 satisfies a predetermined standard after presenting the click tactile sensation. Here, “the pressing load satisfies a predetermined criterion” means that, at the time of release, the pressing load falls below the predetermined criterion from a state where it exceeds the predetermined criterion.

  Here, the load standard for presenting the release tactile sensation can be set the same as the above-described load standard for presenting the click tactile sensation at the time of pressing, but preferably 50% to the load standard for presenting the click tactile sensation at the time of pressing. Set to 80% lower value. In this way, when the same position (input object) is continuously input (sequentially hit), the sequential input and the tactile sensation presentation timing match, and a realistic click tactile sensation without discomfort can be presented. In other words, by making the standard load that presents a tactile sensation at the time of release smaller than the standard load that presents a tactile sensation at the time of pressing, the reference load that presents a tactile sensation at the time of release is pressed. Occasionally, the operability during continuous input can be significantly improved by setting the load to be approximately 50% or more of the reference load that sometimes presents tactile sensation. In addition, by making the reference load that presents a tactile sensation at the time of release approximately 80% or less of the reference load that presents a tactile sensation when pressed, it is possible to cope with minute load changes in the hold state during continuous input.

  In this way, it is possible to present a more realistic click tactile sensation that can be felt as “cut” when pressed and “click” when released. Of course, the release tactile sensation can use the same drive signal as the click tactile sensation, but does not necessarily have to be the same drive signal as the click tactile sensation.

(Second Embodiment)
In the first embodiment described above, when the pressing load on the touch surface satisfies a predetermined standard while the display image of the display unit 30 is changed by the touch input to the touch surface of the touch sensor 40, the touch surface is pressed. A tactile sensation was presented to the pressed object. However, when the presence / absence of the tactile sensation is determined based on only the change in the display image on the display unit 30 and the pressing load on the touch surface, the change in the display image detected by the display change detection unit 16 is actually There may be a case where the change is not based on an input by the operator.

  That is, in step S12 in FIG. 3A, if no input to the position of the object is detected, the process in step S14 is not performed, so the display image of the object on the display unit 30 does not change. However, when an input to a position other than the input object is detected, it is also assumed that the display image other than the input object changes on the display unit 30 regardless of the input. For example, it is assumed that the image of the time display happens to change after an input to a position other than the input object is detected. In addition, when an animation of an image or a broadcast playback moving image is displayed at a location other than the position where the input object is displayed on the display unit 30, these images usually change constantly. it seems to do.

  Even in such a case, if the display change detection unit 16 determines that a change has occurred in the display image, it is not possible to appropriately control whether or not the tactile sensation is presented when an input to the touch sensor is received. Therefore, in the second embodiment, the display change detection unit 16 can detect the change in the display image due to the touch input to the object more accurately.

  The input device according to the second embodiment can be implemented with the same configuration as the input device 1 described in the first embodiment, and the operation in the first embodiment is partially changed. Therefore, the description of the same content as the first embodiment is omitted as appropriate.

  In the input device 1 according to the second embodiment, the display change detection unit 16 analyzes the display image on the display unit 30 and detects whether there is a change in the display image, as in the first embodiment. However, in the second embodiment, the display change detection unit 16 detects whether there is a change in the display image on the display unit 30 within a predetermined range from an input to the touch surface of the touch sensor 40. Therefore, in the present embodiment, the pressure applied to the touch surface does not exist within a predetermined range from the input to the touch surface of the touch sensor 40, for example, the display image at a position away from the input changes, and the pressure load on the touch surface satisfies a predetermined reference. Even if satisfy | filling, the input device 1 does not present a tactile sensation. This is because it can be determined that the change in the display image in such a case is not a change due to an input by the operator.

  FIG. 4 is a flowchart for explaining an operation not involving the application execution unit 20 corresponding to the operation of FIG. 3B described in the first embodiment, among the operations of the input device according to the second embodiment. is there. In the second embodiment, operations involving the application execution unit 20 are performed in the same manner as described with reference to FIG. That is, when the touch sensor 40 detects the position of the touch input on the touch surface, the touch sensor 40 notifies the application execution unit 20 of the input position via the display change detection unit 16 (step S10). The application execution unit 20 determines whether or not the input position corresponds to a position where an image of an object such as a key is displayed in the current GUI (step S12). When the input position corresponds to the position where the object image is displayed, the display control unit 12 changes the display image of the displayed object (step S14). That is, when there is a touch input to an object such as a key, the display image of the object is changed. When changing the display image of an object, for example, the operator makes a display as if the object is selected, or changes the color or brightness of the object, so that the operator touches (touches) a key or the like. It is preferable to make it visible.

  On the other hand, if the input position does not correspond to the position where the object image is displayed in step S12, the application execution unit 20 ends the process without giving an instruction to change the object image. That is, when there is no touch input for an object such as a key, or when the touch input is not for an object such as a key, the application execution unit 20 ends the process without changing the display image of the object. In this case, the image (display image) displayed on the display unit 30 does not change.

  FIG. 4 is a flowchart for explaining the operation following FIG. After the operation shown in FIG. 3A is completed, as shown in FIG. 4, the display change detection unit 16 changes the display image on the display unit 30 within a predetermined range from the input to the touch surface of the touch sensor 40. Is detected (step S30). At this time, the display change detection unit 16 analyzes the image displayed on the display unit 30 and detects a change in the display image, as in the first embodiment.

  The “predetermined range” from the input to the touch surface of the touch sensor 40 is a suitable value depending on the input mode, such as “from the input position to the surrounding 5 mm”, and the input position detection mode. Set appropriately. The “input position” in this case can also be detected in various ways. When the touch input on the touch surface of the touch sensor 40 is detected in a state having an area, for example, the entire area can be set as the “input position”. Further, when a touch input is detected by a point, a value obtained by calculating, for example, the center of gravity of the area can be set as an “input position”. By such setting of the predetermined range, it is possible to detect only a change in the image existing around the input position.

  When a change in the display image is detected in step S30 (that is, when there is a touch input to an object such as a key), the process proceeds to step S32. In step S <b> 32, the tactile sensation control unit 14 determines whether or not the pressing load detected by the load detection unit 60 satisfies a predetermined criterion while increasing due to the pressing of the touch sensor 40 against the touch surface.

  When the pressing load satisfies a predetermined standard in step S32, the tactile sensation control unit 14 generates a predetermined vibration on the touch surface of the touch sensor 40 under the control of the control unit 10 so as to present the tactile sensation. The unit 50 is controlled (step S34). That is, the control unit 10 satisfies the load criterion that the load detection unit 60 presents a tactile sensation in a state where the display change detection unit 16 detects a change in a display image within a predetermined range from an input to the touch surface of the touch panel 40. When the pressing load is detected, the tactile sensation providing unit 50 is controlled so that a tactile sensation is presented to the pressing target pressing the touch surface. By this control, the tactile sensation providing unit 50 presents a tactile sensation to the pressing target pressing the touch surface of the touch sensor 40. As described above, when the input device 1 according to the present embodiment detects a pressing load satisfying the reference in a state where the image near the position of the input is changed by a touch input to the object such as a key, the object A tactile sensation indicating that a pressing input to is accepted is presented.

  Further, when the pressing load does not satisfy the predetermined standard in step S32, the tactile sensation control unit 14 has zero pressing load detected by the load detecting unit 60 due to weakening of the touch sensor 40 against the touch surface. It is determined whether or not (step S36). If the pressing load detected by the load detection unit 60 in step S36 is not yet zero, the process returns to step S32. On the other hand, when the pressing load detected by the load detection unit 60 becomes zero in step S36, the operation according to the present embodiment is terminated. Note that the operation in step S36 is also an operation for determining whether or not an input to the touch panel 40 is still detected, instead of an operation for determining whether or not the pressing load detected by the load detection unit 60 has become zero. You can also

  On the other hand, when a change in the display image on the display unit 30 is not detected in step S30, the display change detection unit 16 ends the process without giving an instruction to the tactile sensation control unit 14 to present tactile sensation. Even if a change in the display image of the display unit 30 is detected in step S30, the process is performed without giving an instruction to present a tactile sensation even when the change is not a change in the display image within a predetermined range from the input. finish. Furthermore, even if a change in the display image is detected in step S30, no tactile sensation is exhibited even if the pressing load detected by the load detection unit 60 does not satisfy the load standard for presenting tactile sensation in step S32.

  As described above, in the input device 1 according to the present embodiment, even if the display image on the display unit 30 is changed, if the change is not in the vicinity of the input position (within a predetermined range), the input is performed by the operator. Since it is difficult to assume a change, no tactile sensation is presented.

(Third embodiment)
In the third embodiment, similarly to the second embodiment described above, the display change detection unit 16 can more accurately determine the change in the display image due to the touch input to the object.

  In the first and second embodiments described above, the time from when the touch input to the touch surface of the touch sensor 40 is performed until the image displayed on the display unit 30 is changed by the input is particularly considered. Not. However, if the presence or absence of the tactile sensation is determined without considering the time from the detection of the input to the change in the display image due to the input, the change in the display image detected by the display change detection unit 16 is actually the operator. It is also possible that the change is not based on the input by.

  That is, for example, as described in the first and second embodiments, when the operation shown in FIG. 3B is performed following the operation shown in FIG. 3A, the input is detected (step S10). ) Immediately after the change of the display image on the display unit 30 is detected (step S20). For this reason, it can be estimated that the change in the display image detected in step S20 is based on the input detected in step S10. However, for example, in the case where the operation of FIG. 3B is made independent, as in the case of processing with FIGS. 3A and 3B coexisting, a change in the display image is detected. The change needs to be based on input detection.

  For example, the point in time when the display change detection unit 16 detects a change in the display image on the display unit 30 in step S20 in FIG. 3B is different from the point in time when the input position is detected in step S10 in FIG. If present, the timing for presenting the tactile sensation may become unnatural. In addition, when time has elapsed from step S10 in FIG. 3A to step S20 in FIG. 3B, even if a change in the display image not caused by an operator input occurs during that time, the tactile sensation will occur. Inconvenience that presents. Such a tactile sensation is not based on the operator's input, so that the operator receives a tactile sensation even though the input is not performed, resulting in an uncomfortable operation.

  Even in such a case, if the display change detection unit 16 detects a change in the display image on the display unit 30, the presence or absence of the tactile sensation presented when the input to the touch surface of the touch sensor 40 is received is appropriately controlled. I can't do it. Therefore, also in the third embodiment, the display change detection unit 16 can detect the change in the display image due to the touch input to the object more accurately.

  Similarly to the second embodiment, the input device according to the third embodiment can be implemented by the same configuration as the input device 1 described in the first embodiment, and the operation in the first embodiment can be performed. Some changes. Therefore, the description of the same content as the first and second embodiments will be omitted as appropriate.

  In the input device 1 according to the third embodiment, the display change detection unit 16 analyzes the display image on the display unit 30 and detects the presence or absence of a change in the display image, as in the first embodiment. However, in the third embodiment, the display change detection unit 16 detects whether there is a change in the display image within a predetermined time after the input to the touch surface of the touch sensor 40 is detected. That is, when the pressing load on the touch surface satisfies a predetermined standard while the display change detection unit 16 detects the change in the display image of the display unit 30 within a predetermined time from the touch input to the touch surface of the touch sensor 40, The tactile sensation control unit 14 controls the tactile sensation providing unit 50 to present a tactile sensation under the control of the control unit 10. Therefore, in the present embodiment, the tactile sensation providing unit 50 satisfies the predetermined standard of the pressing load on the touch surface while the display image of the display unit 30 is changed after a predetermined time has elapsed from the input to the touch sensor 40. However, the input device 1 does not present a tactile sensation. Here, the above-mentioned “predetermined time” is to set a short time such as 0.2 seconds so that a change in the display image of the display unit 30 can be detected as a change due to a touch input to the touch sensor 40. Is preferred.

  FIG. 5 is a flowchart for explaining an operation not involving the application execution unit 20 corresponding to the operation of FIG. 3B described in the first embodiment, among the operations of the input device according to the third embodiment. is there. In the second embodiment, operations involving the application execution unit 20 are performed in the same manner as described with reference to FIG.

  In the third embodiment, the operation shown in FIG. 5 is performed after the operation shown in FIG. 3A or separately from the operation shown in FIG. That is, as shown in FIG. 5, the display change detection unit 16 detects whether or not the display image of the display unit 30 has changed within a predetermined time after the input to the touch surface of the touch sensor 40 is detected ( Step S40). At this time, the display change detection unit 16 analyzes the display image of the display unit 30 and detects the change of the display image, as in the first embodiment. Further, the predetermined time can be measured using a timer (not shown) built in the control unit 10.

  When a change in the display image is detected in step S40 (that is, when there is a touch input to an object such as a key), the process proceeds to step S42. In step S <b> 42, the tactile sensation control unit 14 determines whether or not the pressing load detected by the load detection unit 60 satisfies a predetermined criterion while increasing due to the pressing of the touch sensor 40 against the touch surface.

  When the pressing load satisfies a predetermined standard in step S42, the tactile sensation control unit 14 generates a predetermined vibration on the touch surface of the touch sensor 40 under the control of the control unit 10 so as to present the tactile sensation. The unit 50 is controlled (step S44). That is, the control unit 10 satisfies the load standard that the load detection unit 60 presents a tactile sensation in a state where the display change detection unit 16 detects a change in the display image within a predetermined time from an input to the touch surface of the touch panel 40. When the pressing load is detected, the tactile sensation providing unit 50 is controlled so that a tactile sensation is presented to the pressing target pressing the touch surface. By this control, the tactile sensation providing unit 50 presents a tactile sensation to the pressing target pressing the touch surface of the touch sensor 40. As described above, the input device 1 according to the present embodiment detects a pressing load that satisfies the reference in a state where the image of the display unit 30 has changed within a predetermined time from the input by touch input to an object such as a key. In this case, a tactile sensation that a touch input to the object has been accepted is presented.

  Further, when the pressing load does not satisfy the predetermined standard in step S42, the tactile sensation control unit 14 has zero pressing load detected by the load detection unit 60 due to weakening of the touch sensor 40 against the touch surface. It is determined whether or not (step S46). If the pressing load detected by the load detection unit 60 in step S46 is not yet zero, the process returns to step S42. On the other hand, when the pressing load detected by the load detection unit 60 becomes zero in step S36, the operation according to the present embodiment is terminated. Note that the operation in step S46 is also an operation for determining whether or not an input to the touch panel 40 is still detected, instead of an operation for determining whether or not the pressing load detected by the load detection unit 60 has become zero. You can also

  On the other hand, when a change in the display image on the display unit 30 is not detected in step S40, the display change detection unit 16 ends the process without giving an instruction to the tactile sensation control unit 14 to present tactile sensation. In addition, even if a change in the display image of the display unit 30 is detected in step S40, an instruction to present a tactile sensation is given even if the change is a change after a predetermined time has elapsed since the detection of the touch input. The process ends without issuing. Furthermore, even if a change in the display image is detected in step S40, no tactile sensation is presented even if the pressing load detected by the load detection unit 60 does not satisfy the load standard for presenting tactile sensation in step S42.

  As described above, in the input device 1 according to the present embodiment, even if the display image on the display unit 30 changes, if the change is a change after a predetermined time has elapsed since the detection of the touch input, the input by the operator Since it is difficult to assume a change based on, the tactile sensation is not presented.

  Note that step S40 may be configured in combination with step S30.

(Fourth embodiment)
In the first to third embodiments described above, the fourth embodiment changes the tactile sensation to be presented according to the detected change in the display image.

  In the first to third embodiments described above, when the display change detection unit 16 detects a change in the display image on the display unit 30, the tactile sensation presented by the tactile sensation presentation unit 50 is, for example, a predetermined short-time vibration. Etc., all can be the same vibration. However, for example, when an input is made on an object, the display that changes the image of the object on the display unit 30 is assumed to have various different display modes depending on the type of the object on which the input is made. . Therefore, in the fourth embodiment, when the manner of change of the display image when an input is made differs depending on the object, a difference is also caused in the manner of tactile sensation presented when the input is made.

  The input device according to the fourth embodiment can also be implemented with the same configuration as the input device 1 described in the first embodiment, and the operation in the first embodiment is partially changed. Therefore, the description which becomes the same content as 1st-3rd embodiment is abbreviate | omitted suitably.

  In the input device 1 according to the fourth embodiment, the display change detection unit 16 analyzes the image displayed on the display unit 30 and detects a change in the display image, as in the first embodiment ( Step S20 in FIG. 3B). However, in the fourth embodiment, when the display change detection unit 16 detects that the display image of the display unit 30 has changed due to an input to the touch surface, the display change detection unit 16 also detects the change mode of the display image. Here, the “change mode of the display image” includes various changes such as the amount of change when the color of the display image of the display unit 30 changes and the speed of change when the display image of the display unit 30 changes. The following embodiments are possible.

  When a pressing load that satisfies the criterion is detected based on the result thus detected, the tactile sensation control unit 14 presents a tactile sensation according to the change mode of the display image under the control of the control unit 10. The tactile sensation providing unit 50 is controlled (step S24 in FIG. 3B, etc.). In other words, the control unit 10 detects a pressing load that satisfies a load standard that the load detection unit 60 presents a tactile sensation in a state where the display change detection unit 16 detects a change in the display image due to an input to the touch surface of the touch panel 40. Then, the tactile sensation providing unit 50 is controlled so that the tactile sensation based on the change in the display image on the display unit 30 is presented to the pressing target pressing the touch surface. For example, the control unit 10 controls the tactile sensation providing unit 50 so as to present a tactile sensation based on the color change of the display image to the pressed object. Further, for example, the control unit 10 controls the tactile sensation providing unit 50 so as to present a tactile sensation based on the change speed of the display image to the pressed object. Thus, in order to present a tactile sensation according to the mode of change of the display image, the tactile sensation control unit 14 stores a plurality of vibration patterns in advance.

  In the GUI configured by the image displayed on the display unit 30, the display image of the object that has received the input is displayed in various ways, such as displaying the object as selected or changing the color or brightness of the object. The following embodiments are possible. Alternatively, many conventional applications do not distinguish between an input that touches (touches) a touch sensor and an input that occurs by pressing (pushing). In such an application, when a touch input is received, even before an input by pressing (pushing) is received, for example, a display in which a key or the like is pressed (dented) is also possible. Conceivable.

  Therefore, for example, when an image such as an object such as a key is displayed to be greatly depressed due to a touch input, when a pressing load satisfying the standard is detected, a large tactile sensation is applied according to the input. It is possible to present. Alternatively, when the input (input) is displayed in such a manner that the color (color difference) or brightness of an object such as a key changes greatly, when a pressing load that satisfies the standard is detected, a large tactile sensation is provided according to the input. It can also be presented. In addition, when an image of an object such as a key is displayed in a mode that changes slowly as a result of input, a tactile sensation in a mode that implies a gradual change when detecting a pressing load that satisfies a standard (for example, It is also conceivable to present weak vibrations at predetermined time intervals. On the other hand, when an image of an object such as a key is displayed in such a manner that it changes suddenly, it may be possible to generate a strong tactile sensation that implies a drastic change when a pressing load that satisfies the criteria is detected.

  Other operations can be performed similarly to the operations described in the first to third embodiments.

  As described above, when the input device 1 according to the present embodiment detects a pressing load that satisfies the reference in a state where the display image of the display unit 30 remains changed by an input to the touch surface, the change of the display image is performed. The tactile sensation according to the aspect is presented. Therefore, the input device 1 according to the present embodiment can provide the operator with a feeling of operation closer to a user interface configured with actual keys and the like by appropriately setting the tactile sensation. Moreover, since the input device 1 can variously change the manner of tactile sensation that is presented when an input is made in accordance with the object that receives the input, it is possible to provide a more comfortable operation feeling.

  In addition, this invention is not limited only to the said embodiment, Many deformation | transformation or a change is possible. For example, in the above-described embodiments, the configuration in which the display change detection unit 16 is included in the control unit 10 has been described. However, the input device according to the present invention is not limited to such a configuration, and various configurations can be adopted in accordance with a design requirement. For example, as illustrated in FIG. 6, the control unit 10 may include a display change detection unit 70 on the application execution unit 20 side without including the display change detection unit 16. Thus, the structural relationship between the display change detection unit and the control unit can be changed and designed as appropriate.

  Moreover, in the said embodiment, although the touch input with respect to the touch surface of the said touch panel was detected using the touch sensor 40, when the reference | standard of a predetermined pressing load was satisfy | filled using the load sensor (load detection part). It can also be determined that an input has been made. Such a load detection unit can be configured by using an arbitrary number of strain gauge sensors and the like, similarly to the load detection unit of each embodiment described above.

  Moreover, in each embodiment mentioned above, a load detection part can be comprised according to the input detection system in a touch sensor. For example, in the case of the resistance film method, if a load can be detected from a change in an output signal based on a change in resistance due to a contact area, it can be configured without using a strain gauge sensor. Alternatively, in the case of the electrostatic capacity method, even when the load can be detected from the change in the output signal based on the change in the electrostatic capacity, it can be configured without using the strain gauge sensor.

  In addition, the tactile sensation providing unit may be configured using an arbitrary number of piezoelectric vibrators, or may be configured by providing a transparent piezoelectric element on the entire surface of the touch sensor, or can express vibration that presents tactile sensation. Can be configured to rotate once in one cycle of the drive signal. Furthermore, when the load detection unit and the tactile sensation providing unit are configured using a piezoelectric element, the load detection unit and the tactile sensation providing unit can be configured by sharing the piezoelectric element.

  In each of the above-described embodiments, the description has been made assuming the configuration in which the touch sensor is disposed so as to overlap the upper surface of the display unit. However, the input device according to the present invention does not necessarily have such a configuration, and the touch sensor and the display unit may be separated.

  The present invention can also be effectively applied to an input device that functions as a touch switch in which a touch sensor performs an on / off operation.

  Further, the input device according to the present invention drives the piezoelectric element when the pressing load detected based on the output of the piezoelectric element satisfies a load standard for presenting a tactile sensation. Here, the case where the pressing load detected based on the output of the piezoelectric element satisfies the load standard for presenting a tactile sensation may be when the detected pressing load reaches a reference value for presenting a tactile sensation. Then, it may be when the detected pressing load exceeds a reference value for presenting tactile sensation, or when a reference value for presenting tactile sensation is detected based on the output of the piezoelectric element.

DESCRIPTION OF SYMBOLS 1 Input device 10 Control part 12 Display control part 14 Touch control part 16 Display change detection part 20 Application execution part 30 Display part 40 Touch sensor 40a Touch surface 50 Touch display part 60 Load detection part 52 Piezoelectric vibrator 61 Case 62 Insulator 63 Upper cover 64 insulator

Claims (6)

A touch sensor;
A load detection unit for detecting a pressing load on the touch surface of the touch sensor;
A display unit;
A display change detection unit for detecting a change in a display image of the display unit;
A tactile sensation providing unit that vibrates the touch surface of the touch sensor;
In a state where the display change detection unit detects a change in a display image due to an input to the touch surface, when the load detection unit detects a pressing load that satisfies a load standard for presenting tactile sensation, the touch surface is pressed. A control unit for controlling the tactile sensation providing unit so as to present a tactile sensation with respect to the pressed object;
An input device comprising:   The said control part controls the said tactile sensation presentation part so that a tactile sensation may be shown with respect to the said press target, if the said display change detection part detects the change of the display image within the predetermined range from the said input. The input device described.   The control unit controls the tactile sensation providing unit to present a tactile sensation to the pressing target when the display change detection unit detects a change in a display image within a predetermined time from the input. The input device according to 2.   The input device according to any one of claims 1 to 3, wherein the control unit controls the tactile sensation providing unit to present a tactile sensation based on a change in the display image to the pressing target.   The input device according to claim 4, wherein the control unit controls the tactile sensation providing unit to present a tactile sensation based on a change in color of the display image to the pressing target.   The input device according to claim 4, wherein the control unit controls the tactile sensation providing unit to present a tactile sensation based on a speed of change of the display image to the pressing target.

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