WO2012014488A1 - 入力装置 - Google Patents
入力装置 Download PDFInfo
- Publication number
- WO2012014488A1 WO2012014488A1 PCT/JP2011/004294 JP2011004294W WO2012014488A1 WO 2012014488 A1 WO2012014488 A1 WO 2012014488A1 JP 2011004294 W JP2011004294 W JP 2011004294W WO 2012014488 A1 WO2012014488 A1 WO 2012014488A1
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- WIPO (PCT)
- Prior art keywords
- load
- detection unit
- input
- touch sensor
- input device
- Prior art date
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof
Definitions
- the present invention relates to an input device that detects contact with a touch sensor.
- 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 detects an operation by an operator.
- 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). .
- any type of touch sensor detects contact with a finger or a stylus pen, and the touch sensor itself does not physically move like a mechanical push button switch even when touched. .
- the display mode may be changed by changing the display color of an input object such as an input button (hereinafter simply referred to as “object”) displayed on the display unit corresponding to the position where contact is detected.
- object an input object
- Patent Document 1 and Patent Document 2 when a finger or the like touches the touch sensor lightly, it is accepted as an input, and vibration is transmitted to the fingertip of the operator. That is, an operator who operates such an input device can recognize by vibration that the operation on the touch sensor has been accepted by the input device.
- contact is detected at the position of the touch sensor corresponding to the position of an object such as a button displayed on the display unit based on position information from the touch sensor that detected the contact. It is also possible to generate vibration only when That is, an object such as a key or a button is displayed on the display unit, and the touch sensor does not vibrate even when contact is detected at the position of the touch sensor corresponding to the position where the key does not exist. If contact is detected at the position of the touch sensor corresponding to the existing position, vibration can be generated.
- Patent Document 1 and Patent Document 2 merely vibrate the touch sensor according to the detection of the contact when the touch sensor detects the contact. For this reason, in particular, when a button switch such as a mechanical push button switch (push button switch) is drawn on the upper part of the touch sensor, a tactile sensation is presented only by lightly touching the touch sensor with a finger or the like. . Therefore, since the operator reacts only by performing a light touch operation (touch) before pressing (pushing) the touch sensor with a certain amount of pressing force, there is a risk of causing an erroneous operation. In addition, even if the operator does not intend to push the drawn button switch (even if force is not applied), a tactile sensation is presented in response to a light touch operation (touch) before pushing the touch sensor. As a result, the operator feels uncomfortable.
- a button switch such as a mechanical push button switch (push button switch)
- a tactile sensation hereinafter referred to as a click tactile sensation
- the operator feels that the pressed switch returns to the original unpressed state in the process of weakening the applied pressing force (hereinafter referred to as the release touch feeling). ) Is expected to be presented.
- the operator In the case of a mechanical push button switch, the operator expects that no click feeling or release tactile sensation will be presented even if the pressing position is touched or traced with a very weak pressing force.
- the applicant of the present invention invented an input device capable of presenting a tactile sensation as if operating a key or the like constituted by a mechanical switch when performing a slide operation using a touch sensor.
- a patent application has already been filed with the Japan Patent Office (Japanese Patent Application No. 2009-197318).
- the input device presents a tactile sensation in a state where a pressing operation by a pressing load that satisfies a predetermined load standard is detected by adding a load detection unit that detects a pressing load on the touch surface of the touch sensor. Therefore, this input device can prevent an input from being received even if the touch sensor detects a light contact not intended by the operator. Furthermore, since this input device presents a tactile sensation in a state where pressure is given to the operator, a realistic tactile sensation as presented when operating an actual push button switch, which could not be presented by a conventional device. Can be presented.
- the input device provided with such a touch sensor, it is possible to accept input in a plurality of stages according to the pressing load of the operator when the operation is performed, for example, imitating a shutter button of a camera. That is, some push button switches can detect a “half-press” operation by the operator and can turn on the function of adjusting the AF (autofocus) by accepting the first-stage input. There is. In addition, such a switch can receive the second-stage input and release the shutter by detecting the “full press” operation by the operator after receiving the first-stage input. is there.
- the input device described above includes a load detection unit that detects a pressing load on the touch panel, a plurality of inputs such as first-stage input, second-stage input, and further-stage input are performed. It is also possible to sequentially accept and execute different processes assigned to each. By performing an operation using such an input device, the operator can distinguish and execute a plurality of different processes as desired.
- Japanese Patent Office Japanese Patent Application No. 2009-106749.
- this input device provides comfortable operability when functioning normally, but once a malfunction occurs in the load detection unit, the touch panel is operating normally. However, there is a concern that the function as an input device may not be performed. Further, when the input device is operated in the input mode that accepts the input of a plurality of stages as described above, if a failure occurs in the load detection unit and the pressing load cannot be detected, which stage of the plurality of stages is detected. Can no longer accept input.
- an object of the present invention made in view of such circumstances is an input device that detects contact with a touch sensor and detects a pressing load on the touch sensor, and can handle even when a failure occurs in the detection of the pressing load. Is to provide a simple input device.
- the invention of the input device is as follows: A touch sensor; A load detector for detecting a pressing load on the touch sensor; A failure detection unit for detecting a failure of the load detection unit; A first input mode in which a predetermined process is executed when the touch sensor detects a contact, or when the load detection unit detects a pressing load that satisfies a predetermined load standard in a state in which the touch sensor detects a contact. A second input mode that executes a predetermined process, and a control unit that controls the second input mode to be switchable, The control unit performs control so as to prevent a process of switching to the second input mode when the failure detection unit detects a failure of the load detection unit.
- the invention according to a second aspect is the input device according to the first aspect, When the control unit receives an input for switching to the second input mode and the failure detection unit detects a failure of the load detection unit, the control unit prevents the process of switching to the second input mode. It is something to control.
- the invention according to a third aspect is the input device according to the first aspect,
- the control unit performs control so as to prevent a process of switching to the second input mode when the failure detection unit detects a failure of the load detection unit at the start of processing of the control unit.
- An invention according to a fourth aspect is the input device according to the third aspect,
- the control unit controls to start processing in the first input mode when the failure detection unit detects a failure of the load detection unit when the input device is activated.
- the invention according to a fifth aspect is the input device according to any one of the first to fourth aspects.
- a tactile sensation providing unit that vibrates the touch surface of the touch sensor;
- the control unit presents a tactile sensation to the pressing target pressing the touch surface when the load detection unit detects a pressing load that satisfies a predetermined load standard while the touch sensor is detecting contact. In this way, the tactile sensation providing unit is controlled.
- the input device that detects contact with the touch sensor and detects a pressing load on the touch sensor, it is possible to cope with a problem in detecting the pressing load.
- FIG. 1 is a functional block diagram showing a schematic configuration of an input device according to the first embodiment of the present invention.
- the input device according to the present embodiment is a touch sensor such as an input device used when inputting characters or numbers on a portable terminal, an ATM installed in a bank, or an input device used in a ticket vending machine installed in a station. Any input device can be applied as long as it accepts the operation of the operator.
- the input device 1 includes a touch sensor 11, a load detection unit 12, a tactile sensation providing unit 13, a display unit 14, a control unit 15, and a defect detection unit 16.
- the touch sensor 11 is usually arranged on the front surface of the display unit 14 to handle contact with an object such as a key or button (hereinafter simply referred to as “keys”) displayed on the display unit 14 by an operator's finger. Is received by the touch surface of the touch sensor 11.
- the touch sensor 11 is configured by a system such as a resistive film system, a capacitance system, and an optical system, for example.
- the load detection unit 12 detects a pressing load on the touch surface of the touch sensor 11 and is preferably configured using an element that reacts linearly to the pressing load, such as a strain gauge sensor or a piezoelectric element. .
- the tactile sensation providing unit 13 vibrates the touch sensor 11 and is configured using, for example, a piezoelectric vibrator.
- the display unit 14 displays an object such as an input button such as a push button switch (push button switch), and is configured using, for example, a liquid crystal display panel or an organic EL display panel.
- the control unit 15 performs processing to control and manage the operation of the entire input device 1.
- the failure detection unit 16 monitors the load detection unit 12 to detect whether or not a failure has occurred in the load detection unit 12. Specifically, the failure detection unit 16 detects whether or not the pressure load on the touch sensor 11 can no longer be detected because a failure or the like has occurred in the load detection unit 12. In this way, when a failure of the load detection unit 12 is detected, the failure detection unit 16 notifies the control unit 15 of the detection result. When it is notified by the detection result that a failure has occurred in the load detection unit 12, the control unit 15 sets a failure flag, so that the failure detection unit 16 does not detect the failure and the load is detected. It can be known that a defect has occurred in the detection unit 12. Processing in this case will be described later.
- FIG. 2 shows an example of the mounting structure of the input device 1 shown in FIG. 1, FIG. 2 (a) is a sectional view of the principal part, and FIG. 2 (b) is a plan view of the principal part.
- the display unit 14 is housed and held in the housing 21.
- the touch sensor 11 is held on the display unit 14 via an insulator 22 made of an elastic member.
- the display unit 14 and the touch sensor 11 are rectangular in plan view. Further, in the present embodiment, the touch sensor 11 is held on the display unit 14 via the insulators 22 arranged at the four corners deviated from the display area A of the display unit 14 indicated by virtual lines in FIG. Is done.
- the casing 21 is provided with an upper cover 23 so as to cover the surface area of the touch sensor 11 deviated from the display area of the display unit 14, and an elastic member is provided between the upper cover 23 and the touch sensor 11.
- An insulator 24 is provided.
- the front surface member having the touch surface 11a is made of, for example, a transparent film or glass, and the back surface member is made of glass or acrylic.
- the touch sensor 11 has a structure in which when the touch surface 11a is pressed, the pressed portion is slightly bent (distorted) according to the pressing force, or the structure itself is bent slightly.
- a strain gauge sensor 31 for detecting a load (pressing force) applied to the touch sensor 11 is provided in the vicinity of each side covered with the upper cover 23 by adhesion or the like. Further, on the back surface of the touch sensor 11, a piezoelectric vibrator 32 for vibrating the touch sensor 11 is provided by adhesion or the like in the vicinity of two opposing sides. That is, in the input device shown in FIG. 2, the load detecting unit 12 shown in FIG. 1 is configured using four strain gauge sensors 31, and the tactile sensation providing unit 13 is configured using two piezoelectric vibrators 32. . The tactile sensation providing unit 13 vibrates the touch surface 11 a by vibrating the touch sensor 11. In FIG. 2B, the casing 21, the upper cover 23, and the insulator 24 shown in FIG. 2A are not shown.
- a conventional input mode that receives an input by detecting contact using only the touch panel 11 is referred to as a “touch panel input mode”.
- haptic input an input mode for receiving an input by detecting a contact and detecting a pressing load that satisfies a predetermined load standard is referred to as “haptic input”. “Mode”.
- FIG. 3 is a flowchart for explaining processing when accepting an input in the above-described “touch panel input mode”.
- the touch sensor 11 detects a contact in the input device 1, if the position of the contact is a position corresponding to a key or the like, a tactile sensation is presented by receiving an input, It shows that processing is performed.
- objects such as keys are displayed on the display unit 14 of the input device 1 before accepting an operator's operation on the touch surface of the touch sensor 11.
- the object in the present embodiment can be an image that suggests to the operator the part to be touched in order to cause the input device to perform a predetermined process. For example, an image representing a state in which numbers or characters are drawn on the key top is displayed on the display unit 14 as an image of the object.
- the control unit 15 monitors contact with the touch sensor 11.
- the process shown in FIG. 3 starts from the point in time when contact by the operator's operation is detected on the touch surface of the touch panel 11.
- step S11 in a predetermined area on the touch sensor 11 corresponding to the area where the object is displayed on the display unit 14, the touch sensor 11 detects contact by a pressing target (pressed object) such as an operator's finger or stylus pen.
- the control unit 15 performs the processing from step S12 onward.
- the “predetermined area” is an area in the touch sensor 11 corresponding to a position where an object such as a key or a button is displayed on the display unit 14. Since this “predetermined area” is an area corresponding to a key or the like, hereinafter, it is simply referred to as “key area” as appropriate.
- step S11 when the position of the contact is within the key area, the control unit 15 changes the display mode of the object corresponding to the position where the contact is detected and displays it on the display unit 14 (step S12).
- the change in the display mode of the object performed in step S12 is, for example, an object drawing in which a key is depressed when a mechanical push button switch is pressed by an operator (hereinafter referred to as “key press display”). And the like.
- key press display an object drawing in which a key is depressed when a mechanical push button switch is pressed by an operator
- a mode that emphasizes that the contact of the operator is detected may be displayed by instantaneously changing the color or brightness of the object. .
- the control unit 15 drives the tactile sensation providing unit 13 with a predetermined drive signal, and vibrates the touch sensor 11 with a predetermined vibration pattern set in advance to present the tactile sensation (Ste S13).
- the tactile sensation providing unit 13 drives the two piezoelectric vibrators 32 in the same phase, for example. By this vibration, the operator can recognize that the input by his / her contact has been normally received.
- the control part 15 performs a predetermined process according to the procedure set beforehand (step S14).
- the “predetermined process” in step S14 means a predetermined process assigned to the object corresponding to the position where the contact is detected. For example, when the object corresponding to the position where contact is detected is a character key, the control unit 15 performs a process of outputting (displaying) the character. When the object corresponding to the position where the contact is detected is an execution key for some function, the control unit 15 performs processing for starting execution of the function.
- the “predetermined process” includes a process of switching the input mode of the input device 1 to the “haptic input mode” described above.
- the processing in the touch panel input mode described above is performed by detecting contact by an operator's operation in an input device having a normal touch sensor, and notifying the operator of the contact by display or vibration. This can be performed in the same manner as the conventional process that performs the process according to the detection of the contact.
- FIG. 4 is a flowchart for explaining processing when accepting an input in the above-described “haptic input mode”.
- the input device 1 when the touch sensor 11 detects contact, the input is not yet received, and the position of the contact is a position corresponding to a key or the like and satisfies a predetermined load standard.
- a pressing load When a pressing load is detected, an input is received to present a tactile sensation and to perform a predetermined process.
- objects such as keys are displayed on the display unit 14 of the input device 1 before accepting the operation of the operator on the touch surface of the touch sensor 11.
- the control unit 15 monitors the contact with the touch sensor 11 and also monitors the pressing load detected by the load detection unit 12. .
- the process shown in FIG. 4 also starts from the point in time when contact by the operator's operation is detected on the touch surface of the touch panel 11.
- step S21 when the touch sensor 11 detects a contact by a pressing target (pressed object) such as an operator's finger or stylus pen in the key area, the control unit 15 performs the processing in step S22 and subsequent steps.
- a pressing target pressed object
- the control unit 15 performs the processing in step S22 and subsequent steps.
- step S22 the control unit 15 determines whether or not the pressing load detected by the load detection unit 12 satisfies a predetermined load standard while increasing due to the pressing of the touch sensor 11 by the operator.
- the load detection part 12 detects a load from the average value of the output of the four strain gauge sensors 31, for example.
- the pressing load satisfying a predetermined load standard is set to a value such as 1N (Newton) in advance based on the pressing load when the operator performs a normal pressing operation, and the setting can be changed thereafter. It is preferable to do this.
- this predetermined load standard is to prevent the operator from accepting an operation when the operator unintentionally touches lightly as an input, and to give the operator a pressure sensation for realistic tactile sensation described later.
- a pressing load at the time of an operation based on the operator's intention is taken into consideration (for example, an average value or the like), and an excessively low load standard is not set. Even if contact with the key area of the touch sensor 11 is detected in step S21, if the pressing load detected by the load detection unit 12 does not satisfy the predetermined load standard in step S22, the control unit 15 performs step S21. Return to and continue processing.
- step S22 When a pressing load satisfying a predetermined load standard is detected in step S22, the control unit 15 changes the display mode of the object corresponding to the position where the contact is detected and displays it on the display unit 14 (step S23).
- the change of the object display mode performed in step S23 can be performed in the same manner as in step S12 described above.
- the control unit 15 drives the tactile sensation providing unit 13 with a predetermined drive signal, and vibrates the touch sensor 11 with a predetermined vibration pattern set in advance to present the tactile sensation (Ste S24).
- the tactile sensation providing unit 13 drives the two piezoelectric vibrators 32 in the same phase, for example. In this way, in the “haptic input mode”, the input device 1 accepts an input by an operation based on the operator's intention.
- the tactile sensation that the tactile sensation providing unit 13 presents to the object to be pressed in step S24 is preferably the click tactile sensation described above.
- the input device 1 performs the following operation to stimulate the tactile sense while stimulating the pressure sense of the operator. That is, the input device 1 stimulates the pressure sense until the pressing load applied to the touch sensor 11 satisfies a load standard (eg, 1N) that provides tactile sensation.
- the child 32 is driven by a predetermined drive signal to vibrate the touch surface 11a to stimulate the sense of touch.
- 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.
- the operator operates the touch sensor 11 while obtaining a realistic click feeling similar to that when the actual push button switch is operated even if the push button switch of the object drawn on the touch sensor is used. So you do n’t feel uncomfortable.
- the operation can be performed in conjunction with the consciousness that the touch sensor 11 is “pressed”, an operation error due to simple contact can be prevented.
- the driving 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 appropriately set according to the click sensation presented.
- the tactile sensation providing unit 13 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 13 is driven by such a drive signal, and the touch surface 11a is vibrated by about 15 ⁇ m in a state where a pressing load Pth satisfying the load standard 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.
- step S25 the control unit 15 executes a predetermined process according to a preset procedure.
- the “predetermined process” in step S25 is the same as the predetermined process described in step S14.
- the “predetermined process” includes a process of switching the input mode of the input device 1 to the “touch panel input mode”.
- the processing in the haptic input mode described above is different from the case of an input device having a normal touch sensor, as if the push button switch was pressed when an input based on an operator's pressing operation was received. Presenting a unique tactile sensation.
- FIG. 5 is a flowchart for explaining processing in a case where the operation is started in the haptic input mode when the input device 1 is started up such as when the power is turned on. This process starts when the input device 1 is activated, for example, when the power is turned on. When this process is started by turning on the power switch of the input device 1 or the like, the control unit 15 determines whether or not a failure flag is set (step S31).
- step S31 the failure flag of the load detection unit 12 was detected and the failure flag was set when the power supply was turned on and started up before the start of the startup. Assume the case.
- the control unit 15 determines whether or not the failure detection unit 16 has detected a failure of the load detection unit 12 (step S32).
- the control unit 15 performs control so that the input mode is switched to the “haptic input mode” described above (step S36). Thereafter, the haptic input mode processing described in FIG. 4 is performed.
- the control unit 15 sets a failure flag (step S33). In this way, by setting the failure flag in step S33, the control unit 15 subsequently causes a failure without the failure detection unit 16 detecting whether or not a failure has actually occurred in the load detection unit 12. You can recognize that you are doing. It is preferable to store the defect flag in the control unit 15 or the like so that the fact that the defect flag is set is not erased even when the input device 1 is turned off. In this way, even if the power is turned off after setting the malfunction flag, the controller 15 does not detect the malfunction in step S31 when the power is turned on and activated next time. It is possible to know that a problem has occurred in the load detection unit 12.
- step S33 When a failure flag is set in step S33, the control unit 15 displays a message indicating that a failure is detected in the load detection unit 12 on the display unit 14 (step S34). Control to switch to “mode” is performed (step S35). Thereafter, the touch panel input mode processing described in FIG. 3 is performed.
- the “message indicating that a failure has been detected in the load detection unit 12” displayed on the display unit 14 indicates that “the pressure sensor has failed” and “set to touch panel input mode” because of the failure. It is preferable to use a display for notifying the operator of the fact that it has been done. At this time, if an indication that “input is accepted at the time of contact without pressing the touch panel” is also displayed, an effect of reducing the subsequent erroneous operation of the operator can be expected.
- control part 15 displays the message to the effect that the malfunction was detected by the load detection part 12 on the display part 14 (step S34), Control to switch the input mode to the above-described “touch panel input mode” is performed (step S35). Thereafter, the touch panel input mode processing described in FIG. 3 is performed.
- the operation is started in the haptic input mode when the failure of the load detection unit 12 is not detected, and the operation is performed in the touch panel input mode when the failure of the load detection unit 12 is detected. Be started. Therefore, the operation is started in the haptic input mode despite the malfunction of the load detection unit 12, and thereafter, the operator cannot perform an operation because the load detection unit 12 cannot detect the pressing load. This inconvenience is eliminated.
- the processing at the time of starting up the input device 1 such as when the power is turned on is described.
- the processing described with reference to FIG. 5 may be performed as the processing in the case of starting the operation in the haptic input mode when the control unit 15 starts processing.
- FIG. 6 is a flowchart for explaining processing when switching to the haptic input mode after starting the operation in the touch panel input mode. This process starts when the operator performs an operation to switch to the haptic input mode while the input device 1 starts operating in the touch panel input mode and is operating in the touch panel input mode. It can be assumed that the switching is performed, for example, by accepting an input by an operation such as selecting an item of “haptic input mode” on a menu selection screen or the like.
- Step S41 When the processing is started by the operator performing an operation for switching to the haptic input mode, that is, when an input for switching to the haptic input mode is received, the control unit 15 determines whether or not the above-described defect flag is set. (Step S41).
- the control unit 15 determines whether or not the failure detection unit 16 has detected a failure of the load detection unit 12 (step S42). When the failure detection unit 16 does not detect the failure of the load detection unit 12 in step S42, the control unit 15 performs control to switch the input mode to the “haptic input mode” described above (step S45). Thereafter, the haptic input mode processing described in FIG. 4 is performed.
- the control unit 15 sets a failure flag (step S43). In this manner, by setting the failure flag in step S43, the control unit 15 subsequently causes a failure without the failure detection unit 16 detecting whether or not a failure has actually occurred in the load detection unit 12. You can recognize that you are doing.
- step S43 the control unit 15 displays a message indicating that a failure has been detected in the load detection unit 12 on the display unit 14 (step S44), and ends the process.
- the control unit 15 continues processing in the touch panel input mode after this processing by terminating the processing here.
- the “message indicating that a failure has been detected in the load detection unit 12” displayed on the display unit 14 indicates that “the pressure sensor has failed” and “set to the haptic input mode” because of the failure. It is preferable to use a display for notifying the operator that “not possible”.
- control part 15 displays the message to the effect that the malfunction was detected by the load detection part 12 on the display part 14 (step S44), The process ends.
- the mode is switched to the haptic input mode, and the failure of the load detection unit 12 is detected.
- the operation is continued in the touch panel input mode without being switched to the haptic input mode. Therefore, the operator performs an operation to switch to the haptic input mode even though the load detection unit 12 is defective, and thereafter the operator performs an operation because the load detection unit 12 cannot detect the pressing load. The inconvenience of not being able to do is eliminated.
- the input device 2 according to the second embodiment can be implemented with the same configuration as the input device 1 described in the first embodiment, and the processing of the control unit 15 described in the first embodiment is partially changed. To do. Therefore, the same description as in the first embodiment is omitted as appropriate.
- the second embodiment is applied to the case where the input device 1 according to the first embodiment receives a multi-stage input according to a pressing load, such as the shutter button of the camera described above.
- the input device 2 according to the second embodiment has a plurality of stages by changing the processes performed in the “haptic input mode” and the “touch panel input mode” in FIGS. 5 and 6 described in the first embodiment. Is to be able to accept the input.
- FIG. 7 is a flowchart for explaining the flow of the input reception process when the load detection unit 12 can normally detect the pressing load in the input device 2 according to the present embodiment.
- the operator of the input device 2 when performing an operation using the input device 2, is an input device that receives an input of a plurality of steps of at least two steps according to the pressing load. Assume that there is. Further, in the following description, a case will be described in which contact by an operator's operation is detected in a predetermined key area on the touch sensor 11. Therefore, the description about the determination whether or not the contact by the operation of the operator is detected in the predetermined key area on the touch sensor 11 is omitted.
- the control unit 15 monitors whether or not the touch sensor 11 has detected contact by an operator's operation on the touch surface of the touch sensor 11.
- the input reception process by the input device 2 illustrated in FIG. 7 starts from the point in time when the touch sensor 11 detects contact with the touch surface.
- the control unit 15 causes the load detecting unit 12 to receive the first-stage input by increasing the pressing load due to the pressing operation of the operator. It is determined whether or not a pressing load that satisfies the load standard is detected (step S51).
- the first load reference that receives the input of the first stage is a threshold value of a predetermined pressing load that serves as a reference.
- the control unit 15 processes that the first-stage input defined in the input device 2 has been received.
- the first load reference for receiving the first-stage input uses a predetermined pressing load set in advance as a threshold value, but may be changed later according to the preference of the operator.
- step S51 when a pressing load that satisfies the first load criterion for accepting the input of the first stage is not detected, a waiting state is entered.
- the control unit 15 drives the tactile sensation providing unit 13 with a predetermined drive signal to set a predetermined predetermined value.
- the touch sensor 11 is vibrated with this vibration pattern to present a tactile sensation (step S52).
- the tactile sensation presented in step S53 is different from the tactile sensation indicating that the second-stage input described later has been accepted in order to indicate that the first-stage input has been accepted. Is preferred. Thereby, the operator can recognize that the input of the first stage has been normally received by the input device 2 when the tactile sensation is presented.
- control unit 15 controls to perform processing corresponding to the first-stage input defined in the input device 2 in response to receiving the first-stage input (Step S1).
- S53 For example, when the input device 2 is applied to a shutter button of a camera, the process of step S53 is a process when the input device 2 is “half-pressed”, that is, a process of turning on a function for adjusting AF or the like. Equivalent to.
- the operator who recognizes that the first-stage input has been normally received due to the occurrence of vibration is conscious of trying not to perform the second-stage input at once, so the pressing force for performing the input is maintained.
- An operation that is, suppressing an increase in pressing force
- any operator can recognize that the first-stage input has been normally received by the occurrence of vibration.
- the pressing force for maintaining the pressing force for performing the operation at that time varies considerably depending on the operator.
- the second-stage input is received on the basis of the pressing load at the time when the operator maintains the pressing force for the operation.
- a second load reference is set (step S54). That is, every time the load detection unit 12 detects a pressing load that satisfies the first load criterion for receiving the first-stage input, the control unit 15 detects the load detection unit 12 after the first load criterion is satisfied. Based on the pressing load to be performed, a second load reference for receiving the second stage input is set. At this time, the second load reference for receiving the second-stage input is set to a value larger than the first load reference for receiving the first-stage input.
- the control unit 15 determines the pressing load at the time when the pressing force for the operation by the operator is maintained. For example, the control unit 15 calculates the temporal change rate of the pressing load detected by the load detection unit 12, so that the rate of change of the pressing load is initially reduced to a predetermined value or less after step 51 (that is, the operation). The pressing load when the person can determine that the person is maintaining the pressing is determined as the pressing load.
- the control unit 15 receives the second-stage input by adding the value of the predetermined addition width to the pressing load. 2 is set as a load reference (step S54). If the second load standard is set in this manner, even if the same added width value is added, the second load standard differs depending on the pressing load at the time when the pressing force at which the operator operates is maintained. Can be set.
- the control unit 15 determines whether or not the load detecting unit 12 has detected a pressing load that satisfies the second load criterion for receiving the second-stage input due to an increase in the pressing load due to the pressing operation by the operator. Determination is made (step S55).
- the 2nd load standard which receives the input of the 2nd step is a threshold of the predetermined press load set up by the above-mentioned processing. After the second load reference is set in this way, when the load detection unit 12 detects a pressing load exceeding this threshold, the control unit 15 receives the second-stage input defined in the input device 2.
- step S55 when a pressing load that satisfies the second load criterion for accepting the second-stage input is not detected, a waiting state is entered.
- the control unit 15 drives the tactile sensation providing unit 13 with a predetermined drive signal to set a predetermined predetermined value.
- the touch sensor 11 is vibrated with this vibration pattern to present a tactile sensation (step S56).
- the tactile sensation presented in step S56 is preferably different from the tactile sensation indicating that the first-stage input has been accepted in order to indicate that the second-stage input has been accepted. It is. Thereby, the operator can recognize that the input of the second stage has been normally received by the input device 2 when the tactile sensation is presented.
- control unit 15 controls to perform processing corresponding to the second-stage input defined in the input device 2 in response to accepting the second-stage input (Step S1).
- Step S57 For example, when the input device 2 is applied to the shutter button of the camera, the processing in step S57 is processing when the input device 2 is “fully pressed”, that is, processing for releasing the shutter after the AF function is appropriately processed. It corresponds to.
- the second load standard that accepts the second-stage input is set based on the pressing load after the first load standard is satisfied. Therefore, even when the operator operates the input device 2 for the first time, there is no risk of suddenly “full pressing” without knowing the amount of pressing force. Even if a plurality of different operators use the same input device 2, the input device 2 adjusts the pressing force at the time of each operator's operation, and sets an appropriate second load reference for the pressing load. . Therefore, it is not necessary for each operator to perform an operation in accordance with the pressing load required by the input device 2.
- the above-described processing of FIG. 7 is performed in the “haptic input mode (step S36 of FIG. 5 or step S45 of FIG. 6) when the failure detection unit 16 does not detect the failure of the load detection unit 12. ) ”. That is, in the input device 2 according to the present embodiment, when the failure detection unit 16 does not detect the failure of the load detection unit 12 in FIG. 5 or 6, the haptic described in FIG. 7 is performed in step S36 or step S45. Depending on the input mode, it accepts multiple stages of input and performs corresponding processing.
- the failure detection unit 16 detects a failure of the load detection unit 12 in FIG. 5 or 6, that is, the load detection unit 12 applies a pressing load to the touch sensor 11.
- the “touch panel input mode” performed when normal detection cannot be performed will be described.
- FIG. 8 is a flowchart for explaining the flow of the input reception process when the pressing load cannot be normally detected in the input device 2 according to the present embodiment.
- a case where contact is made by an operator's operation within a predetermined key area on the touch sensor 11 will be described. Therefore, the description about the determination whether the contact by the operation of the operator is received in the predetermined key area on the touch sensor 11 is omitted.
- the control unit 15 monitors whether or not the touch sensor 11 has detected contact by an operator's operation on the touch surface of the touch sensor 11.
- the input reception process according to the present embodiment starts when the operation of the input device 2 starts in the “touch panel input mode”.
- the control unit 15 determines whether or not a contact by an operation of the operator with respect to the touch surface of the touch sensor 11 is detected (step S61).
- step S61 if no contact is detected, the process waits.
- the control unit 15 drives the tactile sensation providing unit 13 with a predetermined drive signal, and vibrates the touch sensor 11 with a predetermined vibration pattern set in advance to present the tactile sensation.
- Step S62 the process performed in step S62 corresponds to the process of S52 described with reference to FIG. Thereby, the operator can recognize that the input of the first stage has been normally received by the input device 2 when the tactile sensation is presented.
- control unit 15 performs processing corresponding to the first-stage input defined in the input device 2 in response to receiving the first-stage input (Ste S63).
- the process performed in step S63 corresponds to the process in S53 described with reference to FIG.
- step S63 When the processing corresponding to the first-stage input is performed in step S63, the control unit 15 detects the contact by the touch sensor 11 when the contact by the operator's operation on the touch surface of the touch sensor 11 is released. It is determined whether or not it has disappeared (step S64). In step S64, when the contact is not released, a waiting state is entered.
- step S65 the control unit 15 sets a predetermined time T (step S65).
- the predetermined time T is a time value counted down until the next contact is detected after the contact with the touch sensor 11 is released.
- the control unit 15 processes the input after the second stage in the case of a multi-stage pressing operation.
- the control unit 15 satisfies the second load criterion in the haptic input mode. Considering this as a second stage input when a pressing load is detected, the corresponding processing is performed. Further, when the next contact is detected within a predetermined time T after the release of the next contact, the control unit 15 sets the third load standard in the haptic input mode. A corresponding process is performed by regarding the input as a third step performed when a pressing load to be satisfied is detected.
- the input device 2 substitutes for a multi-step pressing operation by receiving a contact. be able to.
- step S65 the control unit 15 determines whether or not the operator's contact is detected again with respect to the touch surface of the touch sensor 11 (step S66).
- step S66 the control unit 15 drives the tactile sensation providing unit 13 with a predetermined drive signal and vibrates the touch sensor 11 with a predetermined vibration pattern set in advance to present a tactile sensation (step S66).
- step S67 the process performed in step S67 corresponds to the process in S56 described with reference to FIG. Thereby, the operator can recognize that the input of the second stage has been normally received by the input device 2 when the tactile sensation is presented.
- control unit 15 performs processing corresponding to the second-stage input defined in the input device 2 in response to receiving the second-stage input. (Step S68), this process is terminated. Note that the processing performed in step S68 corresponds to the processing of S57 described in FIG.
- step S66 when no contact is detected in step S66, the control unit 15 counts down a predetermined time T (step S69). The control unit 15 determines whether or not the predetermined time T counted down in this manner has become zero (step S70), and if not yet zero, the control unit 15 returns to step S66 to continue the processing, When it becomes zero, this process is terminated.
- the failure detection unit 16 detects a failure of the load detection unit 12, that is, the load detection unit 12 cannot normally detect the pressing load on the touch sensor 11. Even in this case, multi-stage input can be accepted by the “touch panel input mode”. Therefore, although the load detection unit 12 has a defect, the operator performs an operation to switch to the haptic input mode, and thereafter the load detection unit 12 cannot detect the pressing load. The inconvenience that the operation for input cannot be performed is eliminated.
- the message is preferably partially different. That is, in the present embodiment, the “message indicating that the load detection unit 12 has detected a failure” displayed on the display unit 14 indicates that “the pressure sensor has failed” and “ A display for notifying the operator that “the touch panel input mode has been set” or the like can be used. This display can be the same as in the first embodiment. However, in the present embodiment, if a message such as “the first-stage input makes one contact and the second-stage input makes two contacts quickly” is also displayed. In addition, it is possible to expect the effect of reducing the occurrence of subsequent erroneous operations by the operator.
- FIG. 9 is a diagram for explaining a specific example of processing when the input device 2 substitutes for a multi-step pressing operation by detecting contact in the present embodiment.
- the horizontal axis indicates the passage of time from left to right.
- a downward arrow ( ⁇ ) indicates that contact is detected at that time (touch), and an upward arrow ( ⁇ ) indicates that the contact detected at that time is released. (Release).
- FIG. 9A shows that after the touch sensor 11 detects a contact due to the operation of the operator, the input device 2 presents a tactile sensation and performs the first stage process by detecting the release of the contact. It shows that.
- FIG. 9B shows that after the touch sensor 11 detects the release of the contact and the contact is detected again before the predetermined time T becomes zero, the input device 2 presents a tactile sensation and the second It shows that the processing of the stage has been performed.
- FIG. 9 (c) shows that, in each contact operation, there is a little time from when the touch sensor 11 detects the contact until the release of the contact is detected. Since the contact is detected again before becomes zero, it shows that the same result as in FIG. 9B is obtained.
- FIG. 9D shows that, after the state shown in FIG. 9C, after the touch sensor 11 detects the release of the contact, the contact is detected again before the predetermined time T becomes zero.
- the input device 2 presents tactile sensation and indicates that the third stage processing has been performed.
- the touch sensor 11 detects the contact again after detecting the release of the contact. However, since the contact is detected again after the predetermined time T becomes zero, the input device 2 is detected. Indicates a tactile sensation and indicates that the first stage process is performed instead of the second stage process.
- the operator can adjust the timing of the contact operation to make multiple steps. Can be distinguished from each other.
- the present invention is not limited to the above embodiment, and many variations or modifications are possible.
- a click feeling is presented, and the release feeling is not particularly mentioned.
- a release feeling can be presented.
- these click sensations and release sensations are different from each other, a tactile sensation closer to a real push button switch can be presented, but these click sensations and release sensations can be made the same.
- the operability of the input device 1 can be further improved and the occurrence of erroneous operations can be further reduced.
- the input device 1 presents a tactile sensation when detecting contact (touch panel input mode) or when detecting a pressing load that satisfies a predetermined load standard (haptic input mode).
- a tactile sensation when detecting contact (touch panel input mode) or when detecting a pressing load that satisfies a predetermined load standard (haptic input mode).
- presentation of tactile sensation and / or execution of a predetermined process is not performed at the time of detection of contact or at the time of detection of a pressing load that satisfies a predetermined load criterion. You may be made to perform when not satisfy
- the failure detection unit 16 starts up the input device 1 such as when the power is turned on, or starts processing in the touch panel input mode and then switches to processing in the haptic input mode.
- the case where the malfunction of the load detection unit 12 is detected has been described.
- the failure detection unit 16 can detect the failure of the load detection unit 12 constantly or periodically. If it does in this way, if the malfunction of the load detection part 12 is detected in the haptic input mode, the input device 1 can also be forced to switch to the touch panel input mode at that time.
- the load detection unit 12 in each of the above-described embodiments can be configured using an arbitrary number of strain gauge sensors.
- the load detection unit 12 can detect the strain gauge sensor if the pressing load can be detected from the change in the output signal based on the resistance change due to the contact area. It can be configured without using it.
- the electrostatic capacity method if the pressing 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.
- the tactile sensation providing unit 13 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 a tactile sensation.
- the motor may be configured to rotate once in one cycle of the drive signal.
- the load detection unit 12 and the tactile sensation providing unit 13 can also be configured by sharing the piezoelectric elements.
- the input devices 1 and 2 drive the tactile sensation providing unit 13 when the pressing load detected by the load detecting unit 12 satisfies the load standard.
- the time when the pressure load detected by the load detection unit 12 satisfies the load standard may be the time when the pressure load detected by the load detection unit 12 reaches the standard value of the load. It may be when the pressing load detected by the detection unit 12 exceeds the reference value of the load. Further, the case where the pressing load detected by the load detection unit 12 satisfies the load standard may be a time when the reference value of the load is detected by the load detection unit 12.
- control unit 15 of the input devices 1 and 2 prevents the process of switching to the second input mode (haptic input mode) when the failure detection unit 16 detects a failure of the load detection unit 12.
- the control unit 15 of the input devices 1 and 2 is configured to perform the second operation when the failure detection unit 16 detects a failure of the load detection unit 12 while processing in the first input mode (touch panel input mode). It is also possible to perform control so as to switch to the input mode.
- the defect detection unit 16 of the present invention detects whether or not the pressure load on the touch sensor 11 can no longer be detected because a failure has occurred in the load detection unit 12, but the defect detection unit 16 does not detect the touch sensor 11. Any known technique can be applied to the method of detecting whether or not it is impossible to detect the pressing load on the. For example, when the failure detection unit 16 supplies a constant current to the load detection unit 12 and measures the voltage applied to the load detection unit 12 at that time, and the measured voltage is significantly different from the normal voltage, the failure detection unit 16 However, it may be detected that the pressing load on the touch sensor cannot be detected.
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Abstract
Description
タッチセンサと、
前記タッチセンサに対する押圧荷重を検出する荷重検出部と、
前記荷重検出部の不具合を検知する不具合検知部と、
前記タッチセンサが接触を検出すると所定の処理を実行する第1の入力モード、または前記タッチセンサが接触を検出している状態で前記荷重検出部が所定の荷重基準を満たす押圧荷重を検出すると前記所定の処理を実行する第2の入力モード、を切換可能に制御する制御部と、を備え、
前記制御部は、前記不具合検知部が前記荷重検出部の不具合を検知した場合、前記第2の入力モードに切り換える処理を阻止するように制御することを特徴とするものである。
前記制御部は、前記第2の入力モードに切り換える入力を受け付けた際に、前記不具合検知部が前記荷重検出部の不具合を検知した場合、当該第2の入力モードに切り換える処理を阻止するように制御するものである。
前記制御部は、当該制御部の処理開始時に、前記不具合検知部が前記荷重検出部の不具合を検知した場合、前記第2の入力モードに切り換える処理を阻止するように制御するものである。
前記制御部は、前記入力装置の起動時に、前記不具合検知部が前記荷重検出部の不具合を検知した場合、前記第1の入力モードで処理を開始するように制御するものである。
前記タッチセンサのタッチ面を振動させる触感呈示部をさらに備え、
前記制御部は、前記タッチセンサが接触を検出している状態で前記荷重検出部が所定の荷重基準を満たす押圧荷重を検出すると、前記タッチ面を押圧している押圧対象に対して触感を呈示するように前記触感呈示部を制御するものである。
図1は、本発明の第1実施の形態に係る入力装置の概略構成を示す機能ブロック図である。本実施の形態に係る入力装置は、例えば携帯端末で文字または数字を入力する際に用いる入力装置や、銀行に設置されるATM、駅に設置される券売機に用いる入力装置など、タッチセンサにより操作者の操作を受け付けるものであれば、任意の入力装置に適用することができる。
次に、本発明の第2実施の形態に係る入力装置を説明する。第2実施の形態に係る入力装置2は、第1実施の形態において説明した入力装置1と同じ構成により実施することができ、第1実施の形態において説明した制御部15の処理を一部変更するものである。したがって、第1実施の形態と同じ説明は、適宜省略する。
11a タッチ面
12 荷重検出部
13 触感呈示部
14 表示部
15 制御部
16 不具合検知部
21 筐体
22 インシュレータ
23 アッパカバー
24 インシュレータ
31 歪みゲージセンサ
32 圧電振動子
Claims (5)
- タッチセンサと、
前記タッチセンサに対する押圧荷重を検出する荷重検出部と、
前記荷重検出部の不具合を検知する不具合検知部と、
前記タッチセンサが接触を検出すると所定の処理を実行する第1の入力モード、または前記タッチセンサが接触を検出している状態で前記荷重検出部が所定の荷重基準を満たす押圧荷重を検出すると前記所定の処理を実行する第2の入力モード、を切換可能に制御する制御部と、を備え、
前記制御部は、前記不具合検知部が前記荷重検出部の不具合を検知した場合、前記第2の入力モードに切り換える処理を阻止するように制御することを特徴とする入力装置。 - 前記制御部は、前記第2の入力モードに切り換える入力を受け付けた際に、前記不具合検知部が前記荷重検出部の不具合を検知した場合、当該第2の入力モードに切り換える処理を阻止するように制御する、請求項1に記載の入力装置。
- 前記制御部は、当該制御部の処理開始時に、前記不具合検知部が前記荷重検出部の不具合を検知した場合、前記第2の入力モードに切り換える処理を阻止するように制御する、請求項1に記載の入力装置。
- 前記制御部は、前記入力装置の起動時に、前記不具合検知部が前記荷重検出部の不具合を検知した場合、前記第1の入力モードで処理を開始するように制御する、請求項3に記載の入力装置。
- 前記タッチセンサのタッチ面を振動させる触感呈示部をさらに備え、
前記制御部は、前記タッチセンサが接触を検出している状態で前記荷重検出部が所定の荷重基準を満たす押圧荷重を検出すると、前記タッチ面を押圧している押圧対象に対して触感を呈示するように前記触感呈示部を制御する、請求項1ないし4の何れか1項に記載の入力装置。
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EP11812086.4A EP2600227B1 (en) | 2010-07-28 | 2011-07-28 | Input device |
US13/812,447 US8947388B2 (en) | 2010-07-28 | 2011-07-28 | Input apparatus |
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US20130120306A1 (en) | 2013-05-16 |
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EP2600227A4 (en) | 2014-06-25 |
JP2012032891A (ja) | 2012-02-16 |
CN103038732B (zh) | 2015-11-25 |
EP2600227B1 (en) | 2017-09-27 |
JP5529663B2 (ja) | 2014-06-25 |
CN103038732A (zh) | 2013-04-10 |
KR20130041983A (ko) | 2013-04-25 |
US8947388B2 (en) | 2015-02-03 |
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