JP2019087108A - Drive control device, electronic apparatus, and drive control method - Google Patents

Abstract

To provide a drive control device that can provide an excellent tactile sensation.SOLUTION: A drive control device comprises: a display unit; a position detection unit that detects a position of an operation input which is performed on an operation surface of a top panel; a cursor control unit that is the drive control device driving first and second vibration elements of an electronic apparatus which includes the first and second vibration elements causing the operation surface to generate vibration and that moves a display position of a cursor according to movement of the position of the operation input; a first drive control unit that is the first drive control unit which drives the first vibration element using a first drive signal generating proper vibration in an ultrasonic wave band on the operation surface, and that drives the first vibration element using the first drive signal in which intensity of the proper vibration decreases when the operation input is started at a first point, and moves from the first point to a second point existing at a position having a predetermined distance from the first point; and a second drive control unit that drives the second vibration element using a second drive signal generating vibration in a frequency band being able to be sensed by a human sensory organ on the operation surface when the position of the operation input arrive at the second point.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a drive control device, an electronic device, and a drive control method.

  2. Description of the Related Art A portable terminal is conventionally provided with a touch panel and the touch panel, and has a display unit for displaying a cursor moving in response to a touch operation, the touch position being changed when the touch position changes. There is a portable terminal provided with a calculation unit that calculates a display position of a cursor.

  A storage unit for storing the display position calculated by the calculation unit, an update unit for updating the display of the cursor based on the display position calculated by the calculation unit, storage by the storage unit when the touch position changes It further comprises a distance determination unit that determines whether the distance between the previous display position and the current display position is greater than a threshold.

  The object display unit further includes an object display unit that displays an object indicating the previous position of the cursor at the previous display position when it is determined that the distance between the previous display position and the current display position is larger than the threshold. When it is not determined that the distance to the current display position is larger than the threshold, the object is not displayed (for example, see Patent Document 1).

JP, 2014-123243, A

  By the way, the conventional portable terminal does not provide a sense of touch in accordance with the movement of the touch position (position of the operation input).

  Therefore, it is an object of the present invention to provide a drive control device, an electronic device, and a drive control method that can provide good tactile sensation in accordance with the movement of the position of the operation input.

  A drive control device according to an embodiment of the present invention includes a display unit, a top panel having an operation surface disposed on the display surface side of the display unit, and a position for detecting a position of an operation input performed on the operation surface. Driving the first vibrating element and the second vibrating element of an electronic device including a detection unit, a first vibrating element generating a vibration on the operating surface, and a second vibrating element generating a vibration on the operating surface A drive control apparatus, comprising: a cursor control unit that displays a cursor on the display unit according to a position of an operation input performed on the operation surface, wherein the cursor is moved according to movement of the position of the operation input A cursor control unit for moving a position to be displayed, and a first drive control unit for driving the first vibrating element by a first drive signal for generating an intrinsic vibration of an ultrasonic band on the operation surface, to the operation surface Operation input starts at the first point A first drive control unit for driving the first vibrating element by the first drive signal whose intensity of the natural vibration decreases as moving to a second point located at a predetermined distance from the first point; A second drive control unit that drives the second vibration element with a second drive signal that generates on the operation surface a vibration of a frequency band that can be sensed by a human sense organ when the position of the operation input reaches the second point; And.

  It is possible to provide a drive control device, an electronic device, and a drive control method capable of providing a good touch according to the movement of the position of the operation input.

It is a perspective view showing electronic device 100 of an embodiment. It is a top view which shows the electronic device 100 of embodiment. It is a figure which shows the AA arrow cross section of the electronic device 100 shown in FIG. It is a figure which shows the wave front of the standing wave which arises in the top panel 120 by the intrinsic vibration of an ultrasonic wave band. It is a figure explaining a mode that the dynamic friction force concerning a finger tip changes. FIG. 6 is a diagram showing an example of display of the electronic device 100. It is a figure which shows the structure of the electronic device 100 of embodiment. It is a figure which shows the relationship between operation of the cursor 160A by the operation tool 160B, and the vibration intensity by the drive of the vibration element 140 and LRA180. It is a figure explaining the tactile sense provided to a user's fingertip by vibration of vibration element 140 and LRA180. 7 is a flowchart showing processing executed by the drive control device 300. It is a figure which shows the amplitude data by the modification of embodiment. It is a figure which shows the operation tool 160B by the modification of embodiment.

  Hereinafter, an embodiment to which a drive control device, an electronic device, and a drive control method of the present invention are applied will be described.

Embodiment
FIG. 1 is a perspective view showing an electronic device 100 according to the embodiment.

  The electronic device 100 is, for example, a smart phone terminal, a tablet computer, a game machine, or the like that uses a touch panel as an input operation unit. The electronic device 100 may be any device having a touch panel as an input operation unit, and thus is a device installed and used at a specific place such as a portable information terminal or an ATM (Automatic Teller Machine), for example. May be Also, the electronic device 100 may be an on-vehicle input device.

  In the input operation unit 101 of the electronic device 100, a display panel is disposed under the touch panel, and various buttons 102A, a slider 102B, and the like (hereinafter referred to as a GUI operation unit 102) are displayed on the display panel. Will be displayed.

  Generally, the user of the electronic device 100 touches the input operation unit 101 with a fingertip in order to operate the GUI operation unit 102. Further, the electronic device 100 has a speaker 103. The speaker 103 is an example of an audio output unit.

  Next, a specific configuration of the electronic device 100 will be described with reference to FIG.

  FIG. 2 is a plan view showing the electronic device 100 according to the embodiment, and FIG. 3 is a view showing a cross section of the electronic device 100 shown in FIG. 2 and 3, an XYZ coordinate system, which is an orthogonal coordinate system, is defined as illustrated.

  The electronic device 100 includes a housing 110, a top panel 120, a double-sided tape 130, a vibrating element 140, a touch panel 150, a display panel 160, a substrate 170, and an LRA (Linear Resonant Actuator) 180.

  The housing 110 is made of, for example, resin, and as shown in FIG. 3, the LRA 180, the substrate 170, the display panel 160, and the touch panel 150 are disposed in the recess 110A, and the top panel 120 is adhered by the double-sided tape 130. ing.

  The top panel 120 is a thin flat plate member having a rectangular shape in a plan view, and is made of transparent glass or plastic such as polycarbonate. The surface 120A (surface on the Z-axis positive direction side) of the top panel 120 is an example of an operation surface on which the user of the electronic device 100 performs an operation input.

  In the top panel 120, the vibrating element 140 is bonded to the surface on the Z-axis negative direction side, and the four sides in a plan view are bonded to the housing 110 by the double-sided adhesive tape 130. The double-sided adhesive tape 130 is not limited to a rectangular ring as shown in FIG. 3 as long as the four sides of the top panel 120 can be bonded to the housing 110.

  A touch panel 150 is disposed on the Z-axis negative direction side of the top panel 120. The top panel 120 is provided to protect the surface of the touch panel 150. Further, another panel or a protective film may be provided on the surface of the top panel 120.

  The top panel 120 vibrates by driving the vibrating element 140 in a state where the vibrating element 140 is bonded to the surface on the Z-axis negative direction side. In the embodiment, the top panel 120 is vibrated at the natural vibration frequency of the top panel 120 to generate a standing wave in the top panel 120. However, since the vibrating element 140 is bonded to the top panel 120, it is preferable in practice to determine the natural vibration frequency in consideration of the weight of the vibrating element 140 and the like.

  The vibrating element 140 is bonded along the short side extending in the X-axis direction on the Y-axis positive direction side on the surface on the Z-axis negative direction side of the top panel 120. The vibrating element 140 may be any element as long as it can generate vibration in the ultrasonic band, and for example, one including a piezoelectric element such as a piezoelectric element can be used. The vibrating element 140 is an example of a first vibrating element.

  The vibrating element 140 is driven by a drive signal (first drive signal) output from a drive control device described later. The amplitude (intensity) and frequency of the vibration generated by the vibration element 140 are set by the drive signal (first drive signal). Further, on / off of the vibrating element 140 is controlled by a drive signal (first drive signal).

  The ultrasonic band refers to, for example, a frequency band of about 20 kHz or more. In the electronic device 100 according to the embodiment, since the frequency at which the vibrating element 140 vibrates is equal to the frequency of the top panel 120, the driving element 140 vibrates at the natural frequency of the top panel 120 (the Drive signal).

  The touch panel 150 is disposed above the display panel 160 (Z-axis positive direction side) and below the top panel 120 (Z-axis negative direction side). The touch panel 150 is an example of a coordinate detection unit that detects a position at which the user of the electronic device 100 touches the top panel 120 (hereinafter referred to as a position of an operation input).

  On the display panel 160 below the touch panel 150, various buttons (hereinafter referred to as a GUI operation unit) by GUI are displayed. Therefore, the user of the electronic device 100 usually touches the top panel 120 with a fingertip to operate the GUI operation unit.

  The touch panel 150 may be a coordinate detection unit that can detect the position of the operation input to the top panel 120 of the user, and may be, for example, a capacitance detection unit or a resistance film type coordinate detection unit. Here, an embodiment in which the touch panel 150 is a capacitance type coordinate detection unit will be described. Even if there is a gap between the touch panel 150 and the top panel 120, the capacitive touch panel 150 can detect an operation input to the top panel 120.

  Further, although a mode in which the top panel 120 is disposed on the input surface side of the touch panel 150 will be described here, the top panel 120 may be integral with the touch panel 150. In this case, the surface of the touch panel 150 is the surface of the top panel 120 shown in FIGS. 2 and 3 to construct an operation surface. Moreover, the structure which abbreviate | omitted the top panel 120 shown to FIG.2 and FIG.3 may be sufficient. Also in this case, the surface of the touch panel 150 constructs an operation surface. In this case, the member having the operation surface may be vibrated by the natural vibration of the member.

  When the touch panel 150 is a resistive film type, the touch panel 150 may be disposed on the top panel 120. Also in this case, the surface of the touch panel 150 constructs an operation surface. Moreover, the structure which abbreviate | omitted the top panel 120 shown to FIG.2 and FIG.3 may be sufficient. Also in this case, the surface of the touch panel 150 constructs an operation surface. In this case, the member having the operation surface may be vibrated by the natural vibration of the member.

  The display panel 160 may be, for example, a display unit capable of displaying an image such as a liquid crystal display panel or an organic electroluminescence (EL) panel. The display panel 160 is installed on the substrate 170 (in the positive Z-axis direction) by a holder or the like (not shown) inside the recess 110A of the housing 110.

  The display panel 160 is driven and controlled by a driver IC (Integrated Circuit) to be described later, and displays a GUI operation unit, an image, characters, symbols, figures, and the like according to the operation state of the electronic device 100.

  The substrate 170 is disposed inside the recess 110A of the housing 110. The display panel 160 and the touch panel 150 are disposed on the substrate 170. The display panel 160 and the touch panel 150 are fixed to the substrate 170 and the housing 110 by a holder or the like (not shown).

  In addition to a drive control device described later, various circuits and the like necessary for driving the electronic device 100 are mounted on the substrate 170.

  The LRA 180 is, for example, disposed in the recess 110A of the housing 110. The position of the LRA 180 in a plan view is approximately equal to that of the vibrating element 140 as an example. LRA 180 generates vibrations in a frequency band that can be sensed by human sense organs. The LRA 180 is an example of a second vibrating element.

  The LRA 180 is driven by a drive signal (second drive signal) output from a drive control device described later. The amplitude (intensity) and frequency of the vibration generated by the LRA 180 are set by the drive signal (second drive signal). Further, on / off of the LRA 180 is controlled by a drive signal (second drive signal).

  The frequency band that can be sensed by human sense organs is a frequency band of 150 Hz to 400 Hz. Humans can also sense vibrations in frequency bands lower than the 150 Hz to 400 Hz frequency band and higher than the 150 Hz to 400 Hz frequency band, compared to the 150 Hz to 400 Hz frequency band, It will be difficult to sense if the vibration intensity is not large. That is, the frequency band of 150 Hz to 400 Hz represents the frequency band of vibration that human beings can easily detect.

  Here, the LRA 180 is driven with a drive signal of 350 Hz as an example of vibration of a frequency band that can be sensed by human sense organs. It is preferable that such LRA 180 can generate a displacement of about 100 μm to about 1 mm, for example.

  When the LRA 180 is driven, the vibration is transmitted from the housing 110 to the top panel 120, and the user's finger touching the surface 120A of the top panel 120 can be provided with vibration of a frequency band that human sense organs can sense.

  Here, although the LRA 180 is disposed in the recess 110A of the housing 110, since the entire electronic device 100 vibrates when the LRA 180 is driven, the LRA 180 may be provided anywhere in the electronic device 100. Good. In addition, although an embodiment in which the LRA 180 is used as a vibration element that generates vibration in a frequency band that can be sensed by human sense organs is described here, a vibration element that can generate vibration in a frequency band that can be sensed by human sense organs ( As long as it is an actuator, it may be something other than LRA180.

  In the electronic device 100 configured as described above, when the finger of the user contacts the top panel 120 and the movement of the fingertip is detected, the drive control unit mounted on the substrate 170 drives the vibration element 140, and the top panel 120 Vibrate at the frequency of the ultrasonic band. The frequency of the ultrasonic band is a resonant frequency of a resonant system including the top panel 120 and the vibrating element 140, and causes the top panel 120 to generate a standing wave. Also, in a predetermined case, the LRA 180 is vibrated to generate a vibration of a frequency band that can be sensed by a human sense organ in the top panel 120.

  The electronic device 100 provides the user with a tactile sensation through the top panel 120 by generating a standing wave of an ultrasonic band.

  Next, a standing wave generated in the top panel 120 will be described with reference to FIG.

  FIG. 4 is a view showing a wave front formed in parallel to the short side of the top panel 120 among the standing waves generated in the top panel 120 due to the natural vibration of the ultrasonic band, and FIG. 4 (A) is a side view , (B) is a perspective view. In (A) and (B) of FIG. 4, XYZ coordinates similar to those of FIGS. 2 and 3 are defined. In addition, in (A) and (B) of FIG. 4, the amplitude of the standing wave is exaggerated and shown for ease of understanding. Moreover, the vibrating element 140 is abbreviate | omitted in (A) and (B) of FIG.

  Using the Young's modulus E, density 、, Poisson's ratio δ, long side dimension l, thickness t of the top panel 120, and the number k of standing waves existing in the long side direction, the natural frequency of the top panel 120 The (resonance frequency) f is expressed by the following equations (1) and (2). Since the standing wave has the same waveform in units of half a cycle, the number of cycles k takes 0.5 values and becomes 0.5, 1, 1.5, 2...

なお、式（２）の係数αは、式（１）におけるｋ^２以外の係数をまとめて表したものである。

Incidentally, the coefficient α of the formula (2) is a representation collectively coefficients other than k ² in the formula (1).

  The standing wave shown in (A) and (B) of FIG. 4 is a waveform in the case where the cycle number k is 10, as an example. For example, when using Gorilla (registered trademark) glass having a long side length of 140 mm, a short side length of 80 mm, and a thickness t of 0.7 mm as the top panel 120, the number k of cycles is 10 In this case, the natural frequency f is 33.5 kHz. In this case, a drive signal with a frequency of 33.5 kHz may be used.

  Although the top panel 120 is a flat member, when the vibration element 140 (see FIG. 2 and FIG. 3) is driven to generate the natural vibration of the ultrasonic band, the top panel 120 is shown in (A) and (B) of FIG. By bending as shown, a standing wave of bending vibration is generated.

  Here, a mode is described in which one vibrating element 140 is bonded along the short side extending in the X-axis direction on the Y-axis positive direction side in the surface on the Z-axis negative direction side of the top panel 120. The two vibration elements 140 may be used. When two vibrating elements 140 are used, another vibrating element 140 is bonded along the short side extending in the X-axis direction on the Y-axis negative direction side of the top panel 120 in the Z-axis negative direction side. Just do it. In this case, the two vibration elements 140 may be disposed so as to be axially symmetrical with respect to a central line parallel to the two short sides of the top panel 120 as an axis of symmetry.

  Further, in the case of driving the two vibration elements 140, when the cycle number k is an integer, since it is a symmetrical mode since it is a symmetric mode, the cycle number k may be a decimal (a integer part and a decimal part 0. In the case of the number including 5), since it is an antisymmetric mode, it may be driven in opposite phase.

  FIG. 5 is a view for explaining how the dynamic friction force applied to the fingertip performing the operation input changes due to the natural vibration of the ultrasonic wave band generated in the top panel 120 of the electronic device 100. In (A) and (B) of FIG. 5, while the user touches the top panel 120 with a fingertip, an operation input is performed to move the finger from the back side of the top panel 120 to the front side along the arrow. The vibration on / off is performed by turning on / off the vibrating element 140 (see FIGS. 2 and 3).

  Further, in FIGS. 5A and 5B, in the depth direction of the top panel 120, the range touched by the finger while the vibration is off is shown in gray, and the range touched by the finger is shown white while the vibration is on. .

  The natural vibration of the ultrasonic band occurs in the entire top panel 120 as shown in FIG. 4, but in FIGS. 5A and 5B, the user's finger is from the back side to the front side of the top panel 120. Shows an operation pattern for switching vibration on / off while moving to

  Therefore, in (A) and (B) in FIG. 5, the range touched by the finger while the vibration is off is shown in gray in the depth direction of the top panel 120, and the range touched by the finger is white while the vibration is on. Show.

  In the operation pattern shown in FIG. 5A, the vibration is off when the user's finger is on the back side of the top panel 120, and the vibration is on while the finger is moved to the near side.

  On the other hand, in the operation pattern shown in FIG. 5B, the vibration is on when the user's finger is on the back side of the top panel 120, and the vibration is off while moving the finger to the front side. There is.

  Here, when the natural vibration of the ultrasonic band is generated in the top panel 120, an air layer by the squeeze effect intervenes between the surface of the top panel 120 and the finger, and the surface of the top panel 120 is traced with the finger. Dynamic coefficient of friction decreases.

  Therefore, in FIG. 5A, in the range shown in gray on the back side of the top panel 120, the dynamic friction force applied to the fingertip is large, and in the range shown white on the front side of the top panel 120, the dynamic friction force applied to the fingertip is small. Become.

  Therefore, as shown in FIG. 5A, the user performing the operation input to the top panel 120 senses the reduction of the dynamic friction force applied to the fingertip when the vibration is turned on, and perceives the slipperiness of the fingertip. It will be. At this time, the user feels that a recess is present on the surface of the top panel 120 when the dynamic friction force is reduced by making the surface of the top panel 120 smoother.

  On the other hand, in FIG. 5B, in the range shown in white behind the top panel 120, the dynamic friction force applied to the fingertip is small, and in the range shown in gray on the front side of the top panel 120, the kinetic friction force applied to the fingertip is large. Become.

  For this reason, as shown in FIG. 5B, the user performing the operation input to the top panel 120 senses an increase in the dynamic frictional force applied to the fingertip when the vibration is turned off, and the slippage of the fingertip or You will perceive the feeling of getting stuck. And when a dynamic friction force becomes high because a finger tip becomes difficult to slip, it is felt that a convex part exists in the surface of top panel 120.

  As mentioned above, in the case of (A) and (B) of FIG. 5, the user can sense unevenness with a fingertip. In this way, human perception of unevenness is, for example, "printed material transfer method for tactile design and Sticky-band Illusion" (Proceedings of the 11th SICE System Integration Division Conference (SI 2010, Sendai) ____ 174 -177, 2010-12). It is also described in "Fishbone Tactile Illusion" (The Proceedings of the 10th Annual Meeting of the Virtual Reality Society of Japan (September 2005)).

  In addition, although the change of the dynamic friction force in the case of switching vibration on / off was demonstrated here, this is also the same as when the amplitude (intensity | strength) of the vibration element 140 is changed.

  FIG. 6 is a view showing an example of display of the electronic device 100. As shown in FIG. In FIG. 6, the outline of the top panel 120, the touch panel 150, and the display panel 160, and the display of the display panel 160 are shown.

  On the display panel 160, text data, an image of the cursor 160A, and an image of the operation tool 160B are displayed.

  The cursor 160A is always displayed on the display panel 160 as an example. Note that, for example, the cursor 160A may be selected from a mode that is constantly displayed on the display panel 160 and a mode that is displayed when the user performs an operation input on the top panel 120 with a fingertip or the like. . However, here, when no operation input is performed, it is assumed that a position on the Y-axis positive direction side (a position shown in FIG. 6) slightly from the center of the display panel 160 is displayed as the initial position.

  Such a cursor 160A is moved within the display area of the display panel 160 by the user touching the operation tool 160B with a finger or the like to operate the operation tool 160B. The display area of the display panel 160 is the entire inside of the outline of the display panel 160 shown in FIG.

  The operation tool 160B is an operation unit realized by a GUI, and is a circular operation unit having a home area 160B1 and an operation area 160B2. The operation tool 160 </ b> B is semitransparent (transparency is high to some extent), and the display content of the display panel 160 can be seen through.

  The home area 160B1 is a circular area located at the center of the operation tool 160B, and has a size corresponding to the human fingertip. Home area 160B1 is an example of a first area representing a reference position at which an operation input to surface 120A of top panel 120 is started.

  The operation area 160B2 is an annular area surrounding the home area 160B1 and has a width such that a human fingertip can move in the radial direction of the operation tool 160B. The operation area 160B2 indicates the direction in which the cursor 160A can be moved.

  Here, as an example, a mode is shown in which four arrows are displayed in the operation area 160B2 as the movable direction of the cursor 160A. Four arrows indicate a reference direction in which the cursor 160A can be moved, and are directed in the positive X-axis direction, the negative X-axis direction, the positive Y-axis direction, and the negative Y-axis direction. These four arrows indicate that the cursor 160A can be moved in any direction of 360 degrees.

  The operation tool 160B is not displayed on the display panel 160 before the user touches the top panel 120 with a fingertip or the like (when the user performs an operation input) while the power of the electronic device 100 is on, and the user does not When the top panel 120 is touched with (etc., operation input), it is displayed at the touched position. In addition, when the user releases the fingertip or the like from the top panel 120 (when the operation input is stopped), the operation tool 160B is not displayed on the display panel 160.

  More specifically, the operation tool 160B is displayed such that the home area 160B1 is located at a position where the user touches the top panel 120 with a fingertip or the like. When the user performs an operation input near the cursor 160A when the cursor 160A is at the initial position shown in FIG. 6, the cursor 160A is moved to a position not overlapping the operation tool 160B.

  If the user moves the fingertip while performing operation input on the top panel 120 and the operation tool 160B is displayed, the operation tool 160B does not move, so the fingertip moves from the home area 160B1 to the inside of the operation area 160B2. When the user moves the fingertip in the operation area 160B2, the cursor 160A is moved in the movement direction of the fingertip.

  At this time, the electronic device 100 drives the vibration element 140 to generate an air layer by the squeeze effect between the user's fingertip and the top panel 120, thereby reducing the dynamic friction force applied to the fingertip. Then, when the user's fingertip reaches the outer periphery of the operation area 160B2, the electronic device 100 stops driving the vibrating element 140 and drives the LRA 180. This provides the user's fingertip with a predetermined tactile sensation. The predetermined tactile sensation provided to the user's fingertip will be described later with reference to FIGS. 8 and 9.

  The operation area 160B2 is an example of the second area. Further, when the fingertip moves in the radial direction inside the operation area 160B2, the point on the inner circumference of the annular operation area 160B2 is an example of the first point, and the point on the outer circumference is the second This is an example of a point, and the radial width of the operation area 160B is an example of a predetermined distance between the first point and the second point.

  Next, the configuration of the electronic device 100 according to the embodiment will be described with reference to FIG.

  FIG. 7 is a diagram showing the configuration of the electronic device 100 according to the embodiment.

  The electronic device 100 includes a vibration element 140, an amplifier 141, a touch panel 150, a driver IC (Integrated Circuit) 151, a display panel 160, a driver IC 161, an LRA 180, an amplifier 181, a control unit 200, a sine wave generator 310, and an amplitude modulator 320. including.

  The control unit 200 includes an application processor 220, a drive control unit 240A, a drive control unit 240B, and a memory 250. The control unit 200 is realized by, for example, an IC chip.

  The application processor 220, the drive control unit 240 A, the drive control unit 240 B, the sine wave generator 310, and the amplitude modulator 320 construct the drive control apparatus 300. Although an application processor 220, a drive control unit 240A, a drive control unit 240B, and a memory 250 are realized by one control unit 200 here, the drive control unit 240A and / or the drive control unit will be described. The 240 B may be provided outside the control unit 200 as another IC chip or processor. In this case, among the data stored in the memory 250, data necessary for drive control of the drive control unit 240A and / or the drive control unit 240B is stored in a memory different from the memory 250, It may be provided inside the drive control device 300.

  Further, the drive control device 300 may be handled as one including only the cursor control unit 220A and the image control unit 220B in the application processor 220. Further, the cursor control unit 220A and the image control unit 220B may be provided outside the application processor 220.

  In FIG. 7, the housing 110, the top panel 120, the double-sided tape 130, and the substrate 170 (see FIG. 2) are omitted. Here, the amplifier 141, the driver IC 151, the driver IC 161, the LRA 180, the amplifier 181, the drive control unit 240A, the drive control unit 240B, the memory 250, the sine wave generator 310, and the amplitude modulator 320 will be described.

  The amplifier 141 is disposed between the drive control device 300 and the vibrating element 140, and amplifies the drive signal (first drive signal) output from the drive control device 300 to drive the vibrating element 140.

  The driver IC 151 is connected to the touch panel 150, detects position data representing a position at which an operation input to the touch panel 150 has been made, and outputs the position data to the control unit 200. As a result, the position data is input to the application processor 220 and the drive control unit 240A. Note that inputting position data to the drive control unit 240A is equivalent to inputting position data to the drive control device 300.

  The driver IC 161 is connected to the display panel 160, inputs drawing data output from the drive control device 300 to the display panel 160, and causes the display panel 160 to display an image based on the drawing data. As a result, on the display panel 160, a GUI operation unit or an image or the like based on the drawing data is displayed.

  The amplifier 181 is disposed between the drive control device 300 and the LRA 180, and amplifies the drive signal (second drive signal) output from the drive control device 300 to drive the LRA 180.

  The application processor 220 outputs, to the driver IC 161, drawing data representing a GUI operation unit, an image, characters, a symbol, a figure, and the like necessary for the user of the electronic device 100 to operate. The application processor 220 also includes a cursor control unit 220A and an image control unit 220B. The cursor control unit 220A performs display control of the cursor 160A described with reference to FIG. 6, and the image control unit 220B performs display control of the operation tool 160B.

  The communication processor 230 executes processing necessary for the electronic device 100 to perform communication such as WiFi, Bluetooth (registered trademark), or noncontact short distance communication. When the electronic device 100 does not particularly perform communication, the electronic device 100 may not include the communication processor 230.

  When the user moves the fingertip with the operation tool 160B displayed on the display panel 160, the drive control unit 240A outputs amplitude data representing the amplitude to the amplitude modulator 320. Thus, the top panel 120 vibrates by the natural vibration of the ultrasonic band. The amplitude data is data representing an amplitude value for adjusting the strength of the drive signal used to drive the vibration element 140. The amplitude data representing the amplitude may be stored in the memory 250.

  The drive control unit 240A vibrates the vibration element 140 when the user's fingertip starts moving and the moving speed becomes equal to or higher than a predetermined threshold speed. The movement speed may be calculated by the drive control unit 240A as the temporal change degree of the position data.

  Therefore, the amplitude value represented by the amplitude data output by the drive control unit 240A is zero when the moving speed is less than the predetermined threshold speed, and is predetermined according to the moving speed when the moving speed is equal to or higher than the predetermined threshold speed. Is set to the amplitude value of When the moving speed is equal to or higher than a predetermined threshold speed, the amplitude value is set smaller as the moving speed is higher, and the amplitude value is set larger as the moving speed is lower.

  Further, when the user's fingertip reaches the outer periphery of the operation area 160B2, the drive control unit 240A stops the drive of the vibration element 140. The drive control unit 240A is an example of a first drive control unit.

  When the user's fingertip reaches the outer periphery of the operation area 160B2, the drive control unit 240B drives the LRA 180 with a drive signal on the order of several tens of Hz. The drive control unit 240B drives the LRA 180 for several milliseconds. For this reason, when the LRA 180 is driven by the drive control unit 240B, a momentary strong vibration with a feeling of sticking is generated in the top panel 120. The drive control unit 240B is an example of a second drive control unit.

  The memory 250 stores data in which coordinate data representing a GUI operation unit or the like on which an operation input is performed is associated with pattern data representing amplitude data. The memory 250 also includes an image of the operation tool 160B (home area 160B1 and operation area 160B2), amplitude data used by the drive control unit 240A to drive the vibrating element 140, and a drive signal used by the drive control unit 240B to drive the LRA 180. Store the data of

  The sine wave generator 310 generates a sine wave necessary to generate a drive signal for vibrating the top panel 120 at a natural frequency. For example, when the top panel 120 is vibrated at a natural frequency f of 33.5 kHz, the frequency of the sine wave is 33.5 kHz. The sine wave generator 310 inputs a sine wave signal in the ultrasonic band to the amplitude modulator 320.

  The amplitude modulator 320 modulates the amplitude of the sine wave signal input from the sine wave generator 310 using the amplitude data input from the drive control unit 240A to generate a drive signal. As a basic operation, the amplitude modulator 320 modulates the amplitude of the sine wave signal of the ultrasonic band input from the sine wave generator 310, and generates a drive signal without modulating the frequency and phase.

  For this reason, the drive signal output from the amplitude modulator 320 is a sine wave signal of an ultrasonic wave band in which only the amplitude of the sine wave signal of the ultrasonic wave band input from the sine wave generator 310 is modulated. When the amplitude data is zero, the amplitude of the drive signal is zero. This is equivalent to the fact that the amplitude modulator 320 does not output the drive signal.

  FIG. 8 is a view showing the relationship between the operation of the cursor 160A by the operation tool 160B and the vibration intensity by the drive of the vibration element 140 and the LRA 180. FIG. 9 is a view for explaining the tactile sensation provided to the user's fingertip by the vibration of the vibration element 140 and the LRA 180. As shown in FIG.

  At time t1, as shown in FIG. 8A, when the user touches the top panel 120 with a fingertip, as shown in FIG. 8D, the vibrating element 140 is driven and the vibration intensity becomes A1. This is the vibration intensity obtained by maximizing the amplitude data used to drive the vibration element 140.

  Thereafter, as shown in FIG. 8B, when the user moves the fingertip rightward inside the operation area 160B2, as shown in FIG. 8D, the amplitude data is linearly reduced. Thus, the vibration intensity decreases linearly, and at time t2, the vibration intensity becomes about half of A1.

  Then, as shown in FIG. 8C, when the user further moves the fingertip rightward inside the operation area 160B2, as shown in FIG. 8D, the amplitude data continues to be linearly reduced. The vibration intensity decreases linearly, and at time t3, the fingertip reaches the outer periphery of the operation area 160B2. When the fingertip reaches the outer periphery of the operation area 160B2, the amplitude data becomes zero and the vibration intensity becomes zero, and the LRA 180 is driven so that the vibration intensity becomes A2 (> A1).

  When the vibrating element 140 and the LRA 180 are driven in this manner, the dynamic friction force linearly increases from time t1 to t3 and finally a large instantaneous vibration occurs, so that the tactile sensation provided to the user's fingertips As shown in FIGS. 9A, 9B, and 9C, the tactile sensation is as if the rocker switch 500 had been inverted.

  That is, when the user touches the top panel 120 with a fingertip at time t1, as shown in FIG. 9A, one side of the rocker switch 500 is touched, and the fingertip is moved in the right direction from there. Before and after time t2, the dynamic friction force applied to the fingertip linearly increases. In this state, as shown in FIG. 9B, the finger is provided with a tactile sense of resistance as if the rocker switch 500 is being reversed.

  Then, when the fingertip reaches the outer periphery of the operation area 160B2 at time t3, a momentary large clicking vibration is generated by the LRA 180, so the rocker switch 500 is reversed as shown in FIG. 9C. It can provide a sense of state.

  Here, as an example, an embodiment will be described in which the LRA 180 is driven as the fingertip reaches the outer periphery of the operation area 160B2 when the movement distance of the fingertip becomes equal to the radial width of the operation area 160B2. That is, an embodiment will be described in which the radial width of the operation area 160B2 as an image and the movement distance of the fingertip from the start of driving of the vibration element 140 to the driving of the LRA 180 are equal.

  However, the radial width of the operation area 160B2 as an image may not be equal to the movement distance of the fingertip until the LRA 180 is driven after the vibration element 140 starts to be driven.

  The data of the image of the operation tool 160 B as described above, the data representing the size of the image, the amplitude data used when driving the vibration element 140 when the operation is performed inside the operation area 160 B 2, LRA 180 Data of drive signals used for drive may be stored in the memory 250.

  FIG. 10 is a flowchart showing a process performed by the drive control device 300.

  When the power of the electronic device 100 is turned on, the drive control device 300 starts processing (start).

  The drive control device 300 determines whether an operation input is performed (step S1). The process of step S1 is a process in which the image control unit 220B determines whether position data is output from the touch panel 150. In this state, the cursor 160A is displayed on the display panel 160.

  If the drive control device 300 determines that an operation input is performed (S1: YES), the drive control device 300 displays the operation tool 160B on the display panel 160 (step S2). More specifically, the process of step S2 is performed by the image control unit 220B. When it is determined that the operation input is being performed (S1: YES) while the operation tool 160B is displayed, the operation tool 160B is held in the displayed state.

  The drive control device 300 determines whether the moving speed of the position data is equal to or higher than a threshold speed (step S3). The process of step S3 is performed by the drive control unit 240A.

  When it is determined that the moving speed is equal to or higher than the threshold speed (S3: YES), the drive control device 300 drives the vibrating element 140 (step S4). More specifically, the drive control unit 240A drives the vibration element 140 with a drive signal in which the amplitude data decreases according to the movement distance. At this time, the cursor control unit 220A moves the cursor 160A in accordance with the movement of the position of the operation input.

  The drive control device 300 determines whether the position data has reached the outer periphery (end) of the operation area 160B2 (step S5). The drive control unit 240A may determine whether the movement distance of the operation input has reached the width of the operation area 160B2 based on the position data output from the touch panel 150 and the data representing the width of the operation area 160B2. . Alternatively, whether or not the movement distance of the operation input has reached the width of the operation area 160B2 by comparing the displayed coordinates of the operation area 160B2 with the position data output from the touch panel 150. It may be determined by

  If the drive control device 300 determines that the position data has reached the outer periphery of the operation area 160B2 (S5: YES), the drive control device 300 drives the LRA 180 (step S6). More specifically, the drive control unit 240B drives the LRA 180 for several milliseconds based on the determination result of step S5.

  The drive control device 300 determines whether the position data is stopped at the outer periphery of the operation area 160B2 (step S7). More specifically, the image control unit 220B may determine whether the position data output from the touch panel 150 has moved after it is determined in step S5 that the position data has reached the outer periphery of the operation area 160B2. Alternatively, the image control unit 220B may determine whether the position data output from the touch panel 150 is equal to the coordinates of the outer periphery of the operation area 160B2 and has not moved.

  If the drive control device 300 determines that the position data is stopped at the outer periphery of the operation area 160B2 (S7: YES), the drive control device 300 moves the cursor 160A (step S8). The direction in which the cursor 160A is moved is the direction in which the position of the operation input has moved inside the operation area 160B2. That is, when the position of the operation input is stopped at the outer periphery of the operation area 160B2, the cursor 160A is moved on the extension of the trajectory of the movement so far. More specifically, the process of step S8 is performed by moving the cursor 160A to the cursor control unit 220A when the image control unit 220B determines that the position data is stopped at the outer periphery of the operation area 160B2. .

  The drive control device 300 determines whether an operation input is performed (step S9). More specifically, the image control unit 220B determines whether position data is not output from the touch panel 150. This is because if the operation input is not performed, the cursor control unit 220A stops the movement of the cursor 160A.

  If the drive control device 300 determines that the operation input is not performed (S9: YES), the drive control device 300 stops the cursor 160A (step S10). More specifically, the process of step S10 is performed by the image control unit 220B causing the cursor control unit 220A to stop the movement of the cursor 160A.

  The drive control device 300 determines whether to end the process (step S11). The processing is ended, for example, when the power of the electronic device 100 is turned off.

  If the drive control device 300 determines that the process is to be ended (S11: YES), the drive control device 300 ends the series of processes (END).

  When it is determined that the operation input is not performed (S1: NO) in step S1, the drive control device 300 hides the operation tool 160B (step S12). The process of step S12 is performed by the image control unit 220B.

  When it is determined that the operation input is not performed (S1: NO) while the operation tool 160B is in the non-display state, the operation tool 160B is held in the non-display state. When the process of step S12 is completed, the drive control device 300 returns the flow to step S1.

  Further, when it is determined in step S3 that the moving speed is not the threshold speed or more (S3: NO), the drive control device 300 returns the flow to step S1. When the moving speed is not equal to or higher than the threshold speed, the position of the operation input is stopped, and the vibration element 140 is not driven, so that the process returns to step S1.

  If the drive control device 300 determines in step S5 that the position data has not reached the outer periphery of the operation area 160B2 (S5: NO), the flow returns to step S1. If the position data does not reach the outer periphery of the operation area 160B2, the vibration element 140 is to be driven continuously, so that the process returns to step S1.

  If the drive control device 300 determines in step S7 that the position data is not stopped at the outer periphery of the operation area 160B2 (S7: NO), the flow returns to step S1. In order to prepare for the next operation input, the process is returned to step S1.

  If the drive control device 300 determines in step S9 that an operation input has been performed (S9: NO), the flow returns to step S7. Since the user continues to move the cursor 160A, the process returns to step S7.

  If the drive control device 300 determines in step S11 that the process is not completed (S11: NO), the flow returns to step S1. In order to prepare for the next operation input, the process is returned to step S1.

  As described above, according to the embodiment, when the user of the electronic device 100 operates the cursor 160A displayed on the display panel 160 with the operation tool 160B, when the fingertip moves the operation area 160B2, the vibration element 140 is moved to the ultrasonic wave band Driving with the drive signal of, to gradually increase the dynamic friction force applied to the fingertip.

  Then, when the user's fingertip reaches the outer periphery of the operation area 160B2, the electronic device 100 stops driving the vibrating element 140 and drives the LRA 180.

  As a result, the dynamic friction force linearly increases as the fingertip moves in the operation area 160 B 2, and a large instantaneous momentary vibration occurs at the end, so that the tactile sensation provided to the user's fingertip is smooth. While sliding, friction gradually increases, and it feels like a hook at the end. That is, the tactile sensation is as if the rocker switch 500 (see FIGS. 9A, 9B, and 9C) is inverted. Such tactile sensation is provided from the surface 120A of the top panel 120 to the fingertips of the user.

  Therefore, the drive control apparatus 300, the electronic device 100, and the drive control method which can provide a favorable tactile sense can be provided.

  In addition, pseudo tactile sensation can be provided without providing the real rocker switch 500 in the electronic device 100. When the locker switch 500 is actually attached to the electronic device 100, portability may be sacrificed because the installation space is limited particularly in the case of the portable electronic device 100. The embodiment can provide the drive control device 300, the electronic device 100, and the drive control method which do not sacrifice portability.

  Although the above description has been given of the mode of providing the tactile sensation as if the rocker switch 500 was turned over, it may be a tactile sensation such as a toggle switch.

  In the above, although the LRA 180 is driven by the drive signal of the frequency band that can be sensed by human sense organs, the electronic device 100 does not include the LRA 180, and the frequency band can sense the human sense organs. The vibration element 140 may be driven by the drive signal of

  In the above, as shown in FIG. 8D, the embodiment using amplitude data in which the amplitude is linearly reduced as the fingertip moves in the operation area 160B2 has been described. However, the amplitude data as shown in FIG. May be used.

  FIG. 11 is a diagram showing amplitude data according to a modification of the embodiment. As shown in FIG. 11, amplitude data may be used in which the amplitude is reduced nonlinearly as the fingertip moves in the operation area 160B2.

  Also, the image of the operation tool 160B may be highlighted as the fingertip moves in the operation area 160B2. FIG. 12 is a view showing an operation tool 160B according to a modification of the embodiment. FIGS. 12A and 12C show an operation tool similar to the operation tool 160B shown in FIGS. 8A to 8C. FIG. 12B shows an operation tool 160B obtained by darkening the operation tool 160B shown in FIGS. 12A and 12C.

  For example, as shown in FIG. 12A, as the fingertip moves in the operation area 160B2, from the operation tool 160B in the non-dark state shown in FIG. 12A, the operation tool in the dark state shown in FIG. When the display is switched to 160B and the fingertip is further moved, the display may be switched to the non-dark state operation tool 160B shown in FIG. 12C again.

  Further, although the embodiment has been described here in which the non-darkened image and the darkened image are switched as the highlighting, the highlighting may be performed, for example, by changing the color or luminance of the operation tool 160B.

Although the drive control device, the electronic device, and the drive control method of the exemplary embodiment of the present invention have been described above, the present invention is not limited to the specifically disclosed embodiment, Various modifications and changes are possible without departing from the scope of the claims.
Further, the following appendices will be disclosed regarding the above embodiment.
(Supplementary Note 1)
A display unit, a top panel provided on the display surface side of the display unit and having an operation surface, a position detection unit for detecting a position of an operation input performed on the operation surface, and vibration on the operation surface A drive control device for driving the vibration element of an electronic device including the vibration element;
A cursor control unit that displays a cursor on the display unit according to the position of the operation input performed on the operation surface, the cursor moving the position to display the cursor according to the movement of the position of the operation input A control unit,
A first drive control unit that drives the vibration element with a first drive signal that generates an intrinsic vibration of an ultrasonic band on the operation surface, the operation input to the operation surface being started at a first point, and A first drive control unit configured to drive the vibration element with the first drive signal whose intensity of the natural vibration decreases as moving from a point to a second point located at a predetermined distance from the first point;
A second drive control unit for driving the vibration element with a second drive signal that causes the operation surface to generate a vibration in a frequency band that can be sensed by a human sense organ when the position of the operation input reaches the second point; Drive control device including.
(Supplementary Note 2)
A display unit, a top panel provided on the display surface side of the display unit and having an operation surface, a position detection unit for detecting a position of an operation input performed on the operation surface, and vibration on the operation surface A drive control apparatus for driving the first vibrating element and the second vibrating element of an electronic device including a first vibrating element and a second vibrating element that generates vibration on the operation surface,
A cursor control unit that displays a cursor on the display unit according to the position of the operation input performed on the operation surface, the cursor moving the position to display the cursor according to the movement of the position of the operation input A control unit,
A first drive control unit configured to drive the first vibrating element with a first drive signal that generates an intrinsic vibration of an ultrasonic band on the operation surface, the operation input to the operation surface being started at a first point; A first drive control unit configured to drive the first vibrating element with the first drive signal whose intensity of the natural vibration decreases as moving to a second point located at a predetermined distance from the first point;
A second drive control for driving the second vibration element with a second drive signal that causes the operation surface to generate a vibration in a frequency band that can be sensed by a human sense organ when the position of the operation input reaches the second point Drive control device, including:
(Supplementary Note 3)
The drive control apparatus according to claim 1 or 2, wherein the strength of the first drive signal decreases linearly or non-linearly as the position of the operation input moves from the first point to the second point.
(Supplementary Note 4)
When an operation input to the operation surface is started at the first point, a first area representing a reference position and a periphery of the first area are surrounded at a position corresponding to the first point in the display unit, The apparatus further includes an image control unit displaying an image having a second area indicating a direction in which the cursor can move from the first area.
The drive control apparatus according to any one of appendices 1 to 3, wherein the cursor control unit displays the cursor outside the first area and the second area.
(Supplementary Note 5)
The drive control apparatus according to Appendix 4, wherein the outline of the second area is a circle centered on the first point and having a radius of the predetermined distance.
(Supplementary Note 6)
The drive control apparatus according to Appendix 4 or 5, wherein the image control unit emphasizes the image when the position of the operation input reaches the second point.
(Appendix 7)
A display unit,
A top panel disposed on the display surface side of the display unit and having an operation surface;
A position detection unit that detects a position of an operation input performed on the operation surface;
A vibrating element that generates vibration on the operation surface;
A cursor control unit that displays a cursor on the display unit according to the position of the operation input performed on the operation surface, the cursor moving the position to display the cursor according to the movement of the position of the operation input A control unit,
A first drive control unit that drives the vibration element with a first drive signal that generates an intrinsic vibration of an ultrasonic band on the operation surface, the operation input to the operation surface being started at a first point, and A first drive control unit configured to drive the vibration element with the first drive signal whose intensity of the natural vibration decreases as moving from a point to a second point located at a predetermined distance from the first point;
A second drive control unit for driving the vibration element with a second drive signal that causes the operation surface to generate a vibration in a frequency band that can be sensed by a human sense organ when the position of the operation input reaches the second point; Including electronic equipment.
(Supplementary Note 8)
A display unit, a top panel provided on the display surface side of the display unit and having an operation surface, a position detection unit for detecting a position of an operation input performed on the operation surface, and vibration on the operation surface A drive control method for driving the vibrating element of an electronic device including the vibrating element,
A cursor is displayed on the display unit according to the position of the operation input performed on the operation surface, and the position at which the cursor is displayed is moved according to the movement of the position of the operation input.
When driving the vibrating element with the first drive signal that generates the natural vibration of the ultrasonic band on the operation surface, the operation input to the operation surface is started at a first point and a predetermined distance from the first point is Driving the vibrating element with the first drive signal whose intensity of the natural vibration decreases as it moves to a second point in position,
The drive control method, wherein when the position of the operation input reaches the second point, the vibration element is driven by a second drive signal that causes the operation surface to generate a vibration of a frequency band that can be sensed by a human sense organ.

100 electronic equipment 120 top panel 140 vibration element 150 touch panel 160 display panel 160A cursor 160B operation tool 160B1 home area 160B2 operation area 180 LRA
200 control unit 220 application processor 220A cursor control unit 220B image control unit 240A, 240B drive control unit 250 memory 300 drive control device 310 sine wave generator 320 amplitude modulator

Claims (8)

A display unit, a top panel provided on the display surface side of the display unit and having an operation surface, a position detection unit for detecting a position of an operation input performed on the operation surface, and vibration on the operation surface A drive control device for driving the vibration element of an electronic device including the vibration element;
A cursor control unit that displays a cursor on the display unit according to the position of the operation input performed on the operation surface, the cursor moving the position to display the cursor according to the movement of the position of the operation input A control unit,
A first drive control unit that drives the vibration element with a first drive signal that generates an intrinsic vibration of an ultrasonic band on the operation surface, the operation input to the operation surface being started at a first point, and A first drive control unit configured to drive the vibration element with the first drive signal whose intensity of the natural vibration decreases as moving from a point to a second point located at a predetermined distance from the first point;
A second drive control unit for driving the vibration element with a second drive signal that causes the operation surface to generate a vibration in a frequency band that can be sensed by a human sense organ when the position of the operation input reaches the second point; Drive control device including. A display unit, a top panel provided on the display surface side of the display unit and having an operation surface, a position detection unit for detecting a position of an operation input performed on the operation surface, and vibration on the operation surface A drive control apparatus for driving the first vibrating element and the second vibrating element of an electronic device including a first vibrating element and a second vibrating element that generates vibration on the operation surface,
A cursor control unit that displays a cursor on the display unit according to the position of the operation input performed on the operation surface, the cursor moving the position to display the cursor according to the movement of the position of the operation input A control unit,
A first drive control unit configured to drive the first vibrating element with a first drive signal that generates an intrinsic vibration of an ultrasonic band on the operation surface, the operation input to the operation surface being started at a first point; A first drive control unit configured to drive the first vibrating element with the first drive signal whose intensity of the natural vibration decreases as moving to a second point located at a predetermined distance from the first point;
A second drive control for driving the second vibration element with a second drive signal that causes the operation surface to generate a vibration in a frequency band that can be sensed by a human sense organ when the position of the operation input reaches the second point Drive control device, including:   The drive control device according to claim 1, wherein the strength of the first drive signal decreases linearly or non-linearly as the position of the operation input moves from the first point to the second point. When an operation input to the operation surface is started at the first point, a first area representing a reference position and a periphery of the first area are surrounded at a position corresponding to the first point in the display unit, The apparatus further includes an image control unit displaying an image having a second area indicating a direction in which the cursor can move from the first area.
The drive control device according to any one of claims 1 to 3, wherein the cursor control unit displays the cursor outside the first area and the second area.   The drive control apparatus according to claim 4, wherein the outline of the second area is a circle whose center is the first point and whose radius is the predetermined distance.   The drive control device according to claim 4, wherein the image control unit emphasizes the image when the position of the operation input reaches the second point. A display unit,
A top panel disposed on the display surface side of the display unit and having an operation surface;
A position detection unit that detects a position of an operation input performed on the operation surface;
A vibrating element that generates vibration on the operation surface;
A cursor control unit that displays a cursor on the display unit according to the position of the operation input performed on the operation surface, the cursor moving the position to display the cursor according to the movement of the position of the operation input A control unit,
A first drive control unit that drives the vibration element with a first drive signal that generates an intrinsic vibration of an ultrasonic band on the operation surface, the operation input to the operation surface being started at a first point, and A first drive control unit configured to drive the vibration element with the first drive signal whose intensity of the natural vibration decreases as moving from a point to a second point located at a predetermined distance from the first point;
A second drive control unit for driving the vibration element with a second drive signal that causes the operation surface to generate a vibration in a frequency band that can be sensed by a human sense organ when the position of the operation input reaches the second point; Including electronic equipment. A display unit, a top panel provided on the display surface side of the display unit and having an operation surface, a position detection unit for detecting a position of an operation input performed on the operation surface, and vibration on the operation surface A drive control method for driving the vibrating element of an electronic device including the vibrating element,
A cursor is displayed on the display unit according to the position of the operation input performed on the operation surface, and the position at which the cursor is displayed is moved according to the movement of the position of the operation input.
When driving the vibrating element with the first drive signal that generates the natural vibration of the ultrasonic band on the operation surface, the operation input to the operation surface is started at a first point and a predetermined distance from the first point is Driving the vibrating element with the first drive signal whose intensity of the natural vibration decreases as it moves to a second point in position,
The drive control method, wherein when the position of the operation input reaches the second point, the vibration element is driven by a second drive signal that causes the operation surface to generate a vibration of a frequency band that can be sensed by a human sense organ.

Images