WO2020255215A1

WO2020255215A1 - I/o device

Info

Publication number: WO2020255215A1
Application number: PCT/JP2019/023930
Authority: WO
Inventors: 陽介由井
Original assignee: 三菱電機株式会社
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-12-24

Abstract

An I/O device according to the present invention comprises: a touch operation screen (12a) for accepting touch operations; a load detector (13) for detecting a load (F) inputted to the touch operation screen (12a) by a touch operation performed on the touch operation screen (12a); and a vibration source (14) for generating first vibration in the touch operation screen (12a) when the load (F) detected by the load detector (13) becomes a threshold (F0) or higher, and generating second vibration in the touch operation screen (12a) when the load (F) detected by the load detector (13) becomes less than the threshold (F0). The vibration source (14) imparts opposite phases to the waveform (V1) of the first vibration and the waveform (V2) of the second vibration.

Description

Input / output device

The present invention relates to an input / output device.

Conventionally, an input / output device has been provided that gives a user a tactile sensation due to vibration to recognize that the user has received a touch operation on the touch operation surface. Such an input / output device is disclosed in, for example, Patent Document 1.

Japanese Unexamined Patent Publication No. 2011-54025

The input / output device disclosed in Patent Document 1 gives the user a tactile sensation as if he / she operated a mechanical push button by vibrating from the touch operation surface when the user presses the touch operation surface. .. However, the input / output device disclosed in Patent Document 1 changes the amplitude of the vibration waveform or the generation time of the vibration to give a tactile sensation as if the mechanical push button was operated, and the mechanical push button is actually used. It is difficult to reproduce the tactile sensation that is transmitted to the user when the is operated.

The present invention has been made to solve the above-mentioned problems, and provides an input / output device capable of reproducing a tactile sensation equivalent to the tactile sensation transmitted to a user when a mechanical push button is operated. With the goal.

The input / output device according to the present invention is detected by a touch operation surface that accepts touch operations, a load detection unit that detects a load input to the touch operation surface by a touch operation on the touch operation surface, and a load detection unit. When the applied load exceeds the threshold value, the first vibration is generated toward the touch operation surface, and when the load detected by the load detection unit becomes less than the threshold value, the second vibration is generated toward the touch operation surface. The vibration source is provided with a vibration source for generating the above-mentioned vibration source, so that the waveforms of the first vibration and the waveforms of the second vibration are in opposite phases to each other.

According to the present invention, it is possible to reproduce the tactile sensation equivalent to the tactile sensation transmitted to the user when the mechanical push button is operated.

It is an external perspective view which shows the structure of the input / output device which concerns on Embodiment 1. FIG. It is a flowchart which shows the operation of the input / output device which concerns on Embodiment 1. FIG. It is a figure which shows the waveform of the vibration given by the input / output device which concerns on Embodiment 1. FIG. It is a figure which showed the measurement data of the vibration waveform at the time of pressing a mechanical push button. It is a figure which shows the waveform of the vibration given by the input / output device which concerns on Embodiment 2. It is a figure which shows the waveform of the vibration given by the input / output device which concerns on Embodiment 3. It is an external perspective view which shows the structure of the input / output device which concerns on Embodiment 4. FIG. It is a figure which shows the waveform of the vibration given by the input / output device which concerns on Embodiment 4. It is a figure which shows the waveform of the vibration given by the input / output device which concerns on Embodiment 5.

Hereinafter, in order to explain the present invention in more detail, a mode for carrying out the present invention will be described with reference to the accompanying drawings.

Embodiment 1.
The input / output device according to the first embodiment will be described with reference to FIGS. 1 to 4.

FIG. 1 is an external perspective view showing the configuration of the input / output device according to the first embodiment. When the input / output device shown in FIG. 1 receives a touch operation from a user, the input / output device gives the user a tactile sensation as if he / she operated a mechanical push button by vibration. This input / output device is provided in, for example, an electronic device such as a navigation device mounted on a vehicle.

The input / output device includes a housing 11, a screen operation unit 12, a load detection unit 13, and a vibration source 14.

The housing 11 supports the screen operation unit 12 via the load detection unit 13.

The screen operation unit 12 has a touch operation surface 12a. The touch operation surface 12a forms the surface of the screen operation unit 12 and receives a touch operation from the user. The screen operation unit 12 is, for example, a touch panel, a glass or resin cover panel that protects the touch panel, and a liquid crystal display panel that are overlapped and integrated.

The load detection unit 13 detects the load input to the touch operation surface by the touch operation on the touch operation surface 12a. Further, the load detection unit 13 outputs a detection signal indicating the detected load. The load detection unit 13 is provided between the housing 11 and the screen operation unit 12.

The vibration source 14 is provided on the back surface of the screen operation unit 12. The vibration source 14 vibrates the screen operation unit 12 in response to a touch operation on the user's touch operation surface 12a. The vibration direction generated by the vibration source 14 is the thickness direction of the screen operation unit 12. The vibration source 14 is, for example, an eccentric motor, a voice coil and solenoid, a piezo element, an actuator driven by electrostatic force, and the like.

Specifically, the vibration source 14 generates the first vibration toward the touch operation surface 12a when the load F detected by the load detection unit 13 becomes the threshold value F0 or more. Further, when the load F detected by the load detecting unit 13 becomes less than the threshold value F0, the vibration source 14 generates a second vibration toward the touch operation surface 12a. Then, the vibration source 14 makes the waveform V1 of the first vibration and the waveform V2 of the second vibration have opposite phases to each other.

Next, the operation of the input / output device according to the first embodiment will be described with reference to FIGS. 2 and 3. FIG. 2 is a flowchart showing the operation of the input / output device according to the first embodiment. FIG. 3 is a diagram showing waveforms V1 and V2 of vibrations given by the input / output device according to the first embodiment. The horizontal axis of FIG. 3 indicates time. The vertical axis of FIG. 3 shows the load F and the acceleration of vibration.

In step ST11, the touch operation surface 12a of the screen operation unit 12 receives a touch operation from the user.

In step ST12, the load detection unit 13 detects the load F when the user presses the touch operation surface 12a as a button.

In step ST13, the input / output device determines whether or not the load F detected by the load detection unit 13 is equal to or greater than the threshold value F0. Here, when the input / output device determines that the load F is equal to or greater than the threshold value F0, the operation of the input / output device proceeds to step ST14. On the other hand, when the input / output device determines that the load F is not equal to or greater than the threshold value F0, the input / output operation repeats step ST13.

In step ST14, the vibration source 14 generates the first vibration. Then, the touch operation surface 12a vibrates by the first vibration generated from the vibration source 14, and this first vibration is transmitted to the user from the touch operation surface 12a. The waveform V1 of the first vibration is generated when the load F exceeds the threshold value F0 from a value lower than the threshold value F0 and becomes the threshold value F0 or more.

In step ST15, the input / output device determines whether or not the load F detected by the load detection unit 13 is less than the threshold value F0. Here, when the input / output device determines that the load F is less than the threshold value F0, the operation of the input / output device proceeds to step ST16. On the other hand, when the input / output device determines that the load F is not less than the threshold value F0, the operation of the input / output device repeats step ST15.

In step ST16, the vibration source 14 generates the second vibration. Then, the touch operation surface 12a vibrates due to the second vibration generated from the vibration source 14, and this second vibration is transmitted to the user from the touch operation surface 12a. The waveform V2 of the second vibration is generated when the load F falls below the threshold value F0 from a value larger than the threshold value F0 and becomes less than the threshold value F0.

At this time, the vibration source 14 makes the waveform V1 of the first vibration and the waveform V2 of the second vibration out of phase with each other. In other words, the waveform V1 of the first vibration and the waveform V2 of the second vibration are started so that their phases are opposite to each other.

As described above, the input / output device generates the first vibration from the vibration source 14 when the touch operation (button pressing operation) is started, and when the touch operation (operation away from the button) is completed, the first vibration is generated. 2 Vibration is generated from the vibration source 14. Therefore, the input / output device can give the user a tactile sensation as if he / she actually operated a mechanical push button by vibration. As a result, when the user operates the touch operation surface 12a, he / she can feel that the touch operation is surely performed.

Here, the vibration waveform when the mechanical push button is pressed will be described with reference to FIG. FIG. 4 is a diagram showing measurement data of a vibration waveform when a mechanical push button is pressed. The horizontal axis of FIG. 4 indicates time, and the vertical axis of FIG. 4 indicates the acceleration of vibration. Further, the positive direction of acceleration is the direction in which the mechanical push button is pressed, and the negative direction of acceleration is the method in which the mechanical push button returns.

As shown in FIG. 4, the waveforms of vibration transmitted to the user's finger when the mechanical push button is pressed include the waveform V1'when the button is pressed with a finger or the like and when the finger or the like is released from the button. Waveform V2'and is generated. The waveform V1'and the waveform V2' are out of phase with each other.
The waveform V1 of the first vibration corresponds to the waveform V1', and the waveform V2 of the second vibration corresponds to the waveform V2'. The waveform V1 and the waveform V1'are out of phase with each other, and the waveform V2 and the waveform V2'are out of phase with each other. As a result, the input / output device can reproduce the same tactile sensation as when the mechanical push button is operated.

From the above, the input / output device according to the first embodiment is a load detection that detects a load F input to the touch operation surface 12a by a touch operation surface 12a that receives a touch operation and a touch operation on the touch operation surface 12a. When the load F detected by the unit 13 and the load detection unit 13 becomes equal to or higher than the threshold value F0, the first vibration is generated toward the touch operation surface 12a, and the load F detected by the load detection unit 13 is the threshold value. A vibration source 14 that generates a second vibration toward the touch operation surface 12a when the value becomes less than F0 is provided. The vibration source 14 causes the waveform V1 of the first vibration and the waveform V2 of the second vibration to be in opposite phases to each other. As a result, the input / output device can reproduce the tactile sensation equivalent to the tactile sensation transmitted to the user when the mechanical push button is operated.

Embodiment 2.
The input / output device according to the second embodiment will be described with reference to FIG. FIG. 5 is a diagram showing waveforms V1 and V2 of vibrations given by the input / output device according to the second embodiment.

In the input / output device according to the first embodiment, the threshold value F0 for generating the first vibration and the threshold value F0 for generating the second vibration are set to the same value. On the other hand, in the input / output device according to the second embodiment, the threshold value F1 for generating the first vibration and the threshold value F2 for generating the second vibration are set to different values.

When the threshold value F1 and the threshold value f2 are the same value, if the load detected by the load detection unit 13 becomes unstable in the vicinity of the threshold values F1 and F2, the vibration source 14 makes the first vibration and the second vibration how many times. There is a risk of chattering that may cause In the input device according to the second embodiment, the threshold value F1 and the threshold value F2 are set to different values in order to prevent such chattering of the vibration source 14. In the example of FIG. 5, the threshold value F1 is larger than the threshold value F2, but may be smaller than the threshold value F2.

Further, the vibration source 14 can individually set the frequency and amplitude of the first vibration waveform V1 and the second vibration waveform V2, and the waveforms V1 and V2 can be set to a square wave or a sawtooth wave other than a sine wave. May be.

From the above, in the input / output device according to the second embodiment, the threshold value F1 for generating the first vibration and the threshold value F2 for generating the second vibration are set to different values. As a result, the input / output device can prevent chattering of the vibration source 14.

Embodiment 3.
The input / output device according to the third embodiment will be described with reference to FIG. FIG. 6 is a diagram showing waveforms V1 and V2 of vibrations given by the input / output device according to the third embodiment.

The vibration source 14 according to the third embodiment does not set the frequency in the waveform V1 of the first vibration and the frequency in the waveform V2 of the second vibration to constant frequencies.

Specifically, the vibration source 14 sets the frequency at the rising 1/4 wavelength V1a and the frequency at the next 3/4 wavelength V1b to different frequencies in the waveform V1. Similarly, in the waveform V2, the vibration source 14 sets the frequency at the falling 1/4 wavelength V2a and the frequency at the next 3/4 wavelength V2b to different frequencies.

For example, the frequencies of the above 1/4 wavelengths V1a and V2a are frequencies other than the frequency range of 80 to 200 Hz, which is a frequency easily perceived by human fingers. Further, the frequencies of the next 3/4 wavelengths V1b and V2b shall be frequencies within the range of 80 to 200 Hz, which are frequencies that are easily perceived by human fingers.

From the above, the vibration source 14 of the input / output device according to the third embodiment does not set the frequency in the waveform V1 of the first vibration and the frequency in the waveform V2 of the second vibration to constant frequencies. As a result, the input / output device can convey only the vibration component that is easy to feel to the user without transmitting the vibration component whose initial motion is slow to the user, so that the user can be given a good tactile sensation.

Embodiment 4.
The input / output device according to the fourth embodiment will be described with reference to FIGS. 7 and 8. FIG. 7 is an external perspective view showing the configuration of the input / output device according to the fourth embodiment. FIG. 8 is a diagram showing waveforms V1, V2, S1, S2 of vibrations given by the input / output according to the fourth embodiment.

As shown in FIG. 7, the input / output device according to the fourth embodiment has a configuration in which the sound source 15 is added to the input / output device according to the first embodiment. The sound source 15 outputs, for example, a sound corresponding to a click operation or a user interface operation.

Specifically, the sound source 15 generates the first sound immediately after the vibration source 14 generates the first vibration, and generates the second sound immediately after the vibration source 14 generates the second vibration. .. As a result, the vibration waveform S1 in the first sound is continuously synthesized after the first vibration waveform V1, and the vibration waveform S2 in the second sound is continuously synthesized after the first vibration waveform V2. To.

From the above, in the input / output device according to the fourth embodiment, after the vibration source 14 generates the first vibration, the first sound is generated, and after the vibration source 14 generates the second vibration, the second is generated. The sound source 15 to generate is provided. The sound source 15 continuously synthesizes the vibration waveform S1 in the first sound after the first vibration waveform V1, and continuously synthesizes the vibration waveform S2 in the second sound after the second vibration waveform V2. To do. As a result, the input / output device can give the user a tactile operation feeling and an auditory operation feeling, so that a good tactile feeling can be given to the user.

Embodiment 5.
The input / output device according to the fifth embodiment will be described with reference to FIG. FIG. 9 is a diagram showing waveforms V1 and V2 of vibrations given by the input / output device according to the fifth embodiment.

The vibration source 14 according to the fifth embodiment changes the magnitude of the first vibration or the second vibration corresponding to the detected load F according to the rate of change of the load F detected by the load detection unit 13. ..

Specifically, as shown in FIG. 9, the vibration source 14 increases the amplitude of the first vibration waveform V1 when the user presses the touch operation surface 12a quickly, and the user slowly presses the touch operation surface 12a. When pressed, the amplitude in the waveform V1 of the first vibration is reduced. In FIG. 9, the load curve and vibration waveform when the user presses the touch operation surface 12a quickly are shown by solid lines, and the load curve and vibration waveform when the user slowly presses the touch operation surface 12a are shown by a two-dot chain line. It shows.

In the example of FIG. 9, the vibration source 14 changes the magnitude of the first vibration, but the magnitude of the second vibration can also be changed. That is, the vibration source 14 increases the amplitude in the waveform V2 of the second vibration when the user quickly releases the finger from the touch operation surface 12a, and when the user slowly releases the finger from the touch operation surface 12a, the vibration source 14 becomes the first. 2 Decrease the amplitude in the vibration waveform V2.

From the above, the vibration source 14 of the input / output device according to the fifth embodiment is the first vibration or the second vibration corresponding to the detected load F according to the rate of change of the load F detected by the load detection unit 13. Change the magnitude of vibration. As a result, the input / output device can change the magnitudes of the first vibration and the second vibration according to the touch operation speed of the user, so that the user can be given a good tactile sensation.

In the present invention, within the scope of the invention, any combination of embodiments, modification of any component in each embodiment, or omission of any component in each embodiment can be omitted. It is possible.

In the input / output device according to the present invention, when the vibration source operates a mechanical push button so that the waveforms of the first vibration and the waveforms of the second vibration are in opposite phases to each other. It can reproduce the same tactile sensation as the tactile sensation transmitted to the user, and is suitable for use in an input / output device or the like that gives a tactile sensation by vibration.

11 housing, 12 screen operation unit, 12a touch operation surface, 13 load detection unit, 14 vibration source, 15 sound source, F load, F0, F1, F2 threshold value, V1, V2, V1', V2', V1a, V1b, V2a, V2b, S1, S2 Vibration waveform.

Claims

The touch operation surface that accepts touch operations and
A load detection unit that detects the load input to the touch operation surface by the touch operation on the touch operation surface, and
When the load detected by the load detection unit exceeds the threshold value, the first vibration is generated toward the touch operation surface, and when the load detected by the load detection unit becomes less than the threshold value, the first vibration is generated. A vibration source that generates a second vibration toward the touch operation surface is provided.
The vibration source is an input / output device characterized in that the waveform of the first vibration and the waveform of the second vibration are in opposite phases to each other.
The input / output device according to claim 1, wherein the threshold value for generating the first vibration and the threshold value for generating the second vibration have different values.
The vibration source is
The input / output device according to claim 1, wherein the frequency in the waveform of the first vibration and the frequency in the waveform of the second vibration are not set to constant frequencies, respectively.
The sound source includes a sound source that generates a first sound after the vibration source generates the first vibration, and generates a second sound after the vibration source generates the second vibration.
The sound source is
The vibration waveform in the first sound is continuously synthesized after the first vibration waveform.
The input / output device according to claim 1, wherein the vibration waveform in the second sound is continuously synthesized after the second vibration waveform.
The vibration source is
The input according to claim 1, wherein the magnitude of the first vibration or the second vibration corresponding to the detected load is changed according to the rate of change of the load detected by the load detecting unit. Output device.