WO2013186841A1 - Electronic device and vibration provision method - Google Patents

Electronic device and vibration provision method Download PDF

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WO2013186841A1
WO2013186841A1 PCT/JP2012/064941 JP2012064941W WO2013186841A1 WO 2013186841 A1 WO2013186841 A1 WO 2013186841A1 JP 2012064941 W JP2012064941 W JP 2012064941W WO 2013186841 A1 WO2013186841 A1 WO 2013186841A1
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Prior art keywords
vibration
actuator
f0
drive signal
electronic device
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PCT/JP2012/064941
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French (fr)
Japanese (ja)
Inventor
遠藤 康浩
谷中 聖志
裕一 鎌田
矢吹 彰彦
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富士通株式会社
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/1613Constructional details or arrangements for portable computers
    • G06F1/1626Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016Input arrangements with force or tactile feedback as computer generated output to the user
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416Control and interface arrangements for touch screen

Abstract

An electronic device having a touch panel and comprising: an actuator that vibrates the touch panel; a memory that stores link information associating functions of the electronic device and a plurality of vibration patterns having different timing for the generation of a drive signal applied to the actuator; and a drive control unit that, when any function of the electronic device is selected, browses the link information and applies the drive signal to the actuator, using the corresponding vibration pattern. The drive signal is any among: a first drive signal that repeats a sine wave of f0 × m/n (m and n being natural numbers and m ≠ n) m times, when the resonance frequency of the actuator is f0; a second drive signal being a sine wave of the resonance frequency f0 of the actuator and which terminates at a point other than the center of the amplitude of the sine wave; and a third drive signal being a vibration repeating m times a waveform having a phase deviated by π/2 from the sine wave of f0 × m/n (m and n being natural numbers and m ≠ n), when the resonance frequency of the actuator is f0, and terminating at a point other than the center of the amplitude of said vibration.

Description

Electronic devices and vibration provides a method

The present invention relates to an electronic device and the vibration provides methods.

Conventionally, there is a portable device to the input means a flat panel. For example, smart phones and tablet-type personal computer, mobile phone or the like is provided with an interface by touch panel. These electronic devices include, but are accepted as input operation contact on the touch panel, touch can not be obtained, such as key click when touching the touch panel.

On the other hand, LRA (Linear Resonant Actuator) utilizing vibration caused by, causing multiple vibrotactile haptic effect, a method of providing a tactile corresponding to the operation have been proposed (e.g., see Patent Document 1). This method, after exciting the LRA at a resonance frequency, and suppressing vibration by vibrating in antiphase.

However, the vibration using the LRA, lower driving frequency than the mechanical click operation, the vibration acceleration is also small. Further, in the vibration using the LRA, without immediately oscillation stop Stopping input, smaller even suppression effect using a known method, it is difficult to produce a sharp touch.

JP-T 2008-521597 JP

The vibration is generated in a conventional manner, when used by functions and operations and links of the electronic device, since inadequate sharpness of vibration itself, it is difficult to produce a variety of patterns by changing the timing of generation of vibration . Also simply be generated continuously conventional vibration can not be obtained touch that can satisfactory to the user.

Therefore, electrons which can be the type of application, the e-mail importance and subject matter, characters used, incoming call, outgoing call, etc., corresponding to the electronic device having function to provide various tactile the realization of the equipment and the vibration provides a method and an object.

In one embodiment, an electronic device having a touch panel,
An actuator for vibrating the touch panel,
A memory for storing a function of the electronic device has the link information associating the plurality of vibration patterns having different generation timing of the drive signal applied to the actuator,
Said when any function is selected in the electronic device, by referring to the link information, and applies the drive signal to the actuator in a corresponding vibration pattern drive control unit,
Wherein the drive signal,
The resonance frequency of the actuator when the f0, sine wave f0 × m / n (m, n are natural numbers and m ≠ n) a first drive signal that repeats m times,
A sine wave of the resonance frequency f0 of the actuator, and a second drive signal that terminates at a point other than the center of the amplitude of the sine wave, and the resonance frequency of the actuator when the f0, f0 × m / n sine wave (m, n are natural numbers and m ≠ n) third drive for terminating the phase [pi / 2 shifted waveforms a vibrating repeated m times, and at a point other than the center point of the amplitude of the vibration signal,
Characterized in that either.

In response to functions implemented by the electronic device, it is possible to provide various tactile.

The waveform of the vibration acceleration caused by depression of the key switch is a diagram showing a waveform of a vibration acceleration generated at the contact of the touch panel. Is a diagram illustrating the sensitivity of the acceleration organs of human. It is a diagram for explaining an electronic device of the embodiment. As an example of the vibration generating device, it is a diagram showing the LRA. It is a schematic configuration diagram of a driving apparatus of the embodiment. It is a flow chart of the operation of driving the LRA by the driving device of FIG. It is a schematic diagram of LRA used in the embodiment. Is a diagram showing an example of the first input waveform applied to the LRA. It is a view of a vibration waveform obtained by providing a first input drive waveform diagrams showing free vibration component and LRA forced vibration component, the composite wave. LRA of displacement of the vibration when the first input drive wave is applied is a diagram showing the speed, and the acceleration waveform. And LRA of acceleration response simulation when an input drive signal a sine wave of LRA of natural frequency f0, which is a diagram illustrating the acceleration measurement results of an actual electronic device. It is a diagram illustrating the acceleration of vibration of the LRA in applying an anti-phase voltage of vibration generated LRA after driving signal termination due to the natural frequency of the sine wave of LRA as a vibration suppression signal. LRA of the acceleration response simulation when an input drive signal a signal which does not satisfy the conditions of the embodiment, showing the acceleration measurements of the actual electronic device. And LRA of acceleration response simulation when an input drive signal satisfying the condition signal of embodiment, showing an acceleration measurement result of an actual electronic device. A second input drive waveform used in the embodiment, showing the vibration acceleration waveform obtained thereby. It is a diagram showing an acceleration waveform of the panel surface only shortened the LRA drive time as a comparative example. The modification of the second input drive waveform diagrams showing the vibration acceleration waveform obtained thereby. And satisfies third input driving waveform embodiment, a diagram of a vibration acceleration waveform obtained thereby. As an example of the third input drive waveform diagrams showing the input drive waveform when the m = 3, n = 2 in the conditions of the embodiment. It is a view of a vibration waveform obtained by applying the input drive waveform of FIG. 19, the free vibration component and LRA forced vibration component diagrams showing composite wave. When given input drive waveform of FIG. 19 is a diagram showing LRA displacement, velocity, and acceleration waveforms. LRA is a schematic view of an electronic device provided on the housing. It is a schematic block diagram of an electronic device that provides a vibration pattern using the first through third one of vibration waveform. Is a diagram showing the types and examples that links the vibration pattern of the application of the electronic device. Is a diagram showing an example in which link the importance or the subject and the vibration pattern of the electronic mail. Is a diagram showing an example in which link the pictogram and the vibration pattern used in the email body. It is a diagram showing a storage example of the link information. Is a diagram illustrating an example of setting or change the link functional elements and the vibration pattern of the electronic device. Is a diagram showing an operation example of using the set vibration pattern. Is a diagram showing an operation example of using the set vibration pattern. Is a diagram showing an operation example of using the set vibration pattern.

The embodiments with reference to the drawings in the following be described. In the embodiment, the information with different generation timing of the signal of a specific vibration waveform produces a variety of vibration patterns, by attaching linking a function of the vibration pattern and the electronic device is provided, by touch via the touch panel of the electronic device to achieve the transfer.

Figures 1 to 22 are diagrams for explaining the generation of a vibration waveform to be used in the embodiment. Figure 1 is a waveform 11 of the vibration acceleration generated when the user presses the key switch 2 of the metal dome with a finger (graph A), a linear resonant actuator (LRA: Linear Resonant Actuator) has touched the touch panel 3 attached It shows the vibration acceleration waveform (graph B) generated when. Vibration acceleration are those measured by the accelerometer 1 which is attached to the finger.

Vibration when you select the key switch 2 (waveform 11) is rapidly attenuated in one to several cycles. Vibration when you touch the touch panel 3 with respect to this (waveform 12), even after stopping the input of the drive signal continues until the free vibration by the natural frequency of the LRA is attenuated. The vibration after the acceleration stop called "residual vibration". As a first method of issuing a sharp tactile sensation in LRA, suppressing residual vibrations.

As shown in FIG. 2, when the vibration frequency is 200 Hz, the human finger can not be sensed and vibration acceleration of vibration is below 0.02 G. The vibration frequency is a frequency of 1 sec. The acceleration of vibration, shows the velocity variation of the vibration per unit time. The receptors of the human major mechanical stimulation, Merkel cells (displacement), Meissner corpuscles (speed), there are three types of Pacinian corpuscles (acceleration), the displacement receiver is 100μm or more, the rate receiver is above 30μm acceleration receptor are said to be stimulated with an amplitude greater than 0.1 ~ 1 [mu] m. On the other hand, since the amplitude of the vibration device of the present situation is on the order of a few μm, human feel is only acceleration. In this sense, it is the acceleration of the stimulus to provide vibration device.

The waveform 11 in FIG. 1 (A), the acceleration of vibration within 0.01 seconds is below 0.02 G, finger senses sharp vibrations of the moment. In the waveform 12 relative to this, the acceleration of the vibration takes 0.1 seconds to less than 0.02 G, the finger continues to sense vibrations until after 0.1 seconds. A vibration represented by waveform 11, in the vibration represented by the waveform 12, becomes heterogeneous as tactile human senses.

In embodiments, the vibration waveform obtained by driving the LRA, by a sharp waveform as shown in waveform 11, to provide various tactile by changing the generation timing of the vibration waveform. In particular, to provide a sharp tactile by converging the vibration waveform generated by the LRA for example within 0.01 seconds. Also it provides a sharp tactile by converging and amplifying the amplitude peaks of the vibration generated by the touch panel for example within 0.02 seconds. Further, to provide a sharp tactile combination of these two approaches.

Figure 3 shows an example of an electronic apparatus to which an embodiment is applied. Electronic device 100, for example a smartphone, a tablet computer, a portable information terminal, such as ATM (Automatic Teller Machine), is any device having a touch panel as an input interface.

Electronic device 100 includes a housing 110, a touch panel 120, double-sided tape 130, LRA140, the substrate 150. The touch panel 120 is fixed to the housing 110 by means of a double-sided tape 130. In the example of FIG. 3, LRA140 is attached to the rear surface of the touch panel 120. LRA140 is a vibrating device which the oscillating system and the actuator are combined with pre-designed resonant frequency, the vibration amount changes according to applied drive signals.

Substrate 150 is disposed in the housing 110. The substrate 150, a driver IC (Integrated Circuit) for outputting a drive signal to the CPU, LRA140 for controlling the driving of LRA140, memory, etc. are mounted. As described below, LRA140, CPU, driver IC and the like, constituting the drive device. When the user's finger touches the touch panel 120, the contact is sensed, LRA140 is driven. Vibration of LRA140 propagates the touch panel 120.

Note was vibrating devices LRA140 in this embodiment, but not limited to LRA if a structure in which an actuator for the vibration resonator.

Figure 4 is a schematic diagram of LRA140. FIG. 4 (A) was used voice coil motor LRA30, FIG. 4 (B) shows the LRA40 using a piezoelectric element 43. Figure 4 LRA30 of (A) has a spring 31, a magnet 32, a coil 33. The spring constant of the spring 31 is k, the mass of the magnet 32 ​​is m, the natural frequency f0 of LRA30 is represented by formula (1).

Figure JPOXMLDOC01-appb-M000001
Figure 4 LRA40 (B) in the weight 41, beams 42, a piezoelectric element 43. When the mass of the weight 41 m, E the Young's modulus of the beam 42, the moment of inertia of the beam 42 I, the longitudinal length of the beam 42 is L, the natural frequency f0 of LRA40, formula (2) in shown.

Figure JPOXMLDOC01-appb-M000002
LRA140 in Figure 3 may be applied LRA30 of the voice coil motor, it may be applied LRA40 using a piezoelectric element 43.

Figure 5 is a schematic configuration diagram of a drive device of the electronic device 100. Drive device 200 includes a CPU (Central Processing Unit) 210, a memory 220. CPU210, by reading and executing a drive control program 230 stored in the memory 220, controls the driving of which will be described later LRA140. The memory 220, a storage area which the drive control program 230 is stored, a storage area, a storage area API (Application Programming Interface) 250 is stored is provided with waveform data 240 is stored.

Drive control program 230 to perform the drive control of LRA140 the CPU 210. Waveform data 240 is data representing the input drive waveform for driving the LRA140. Waveform data 240 is generated in advance and stored. As a feature of the embodiment, so that it can provide a sharp tactile touch panel, at least one of the first to third input driving waveform to be described later is stored. API250 is activated by the drive control program 230 performs various processes for providing a tactile sensation. API250 In Figure 5 it is assumed to be stored in the memory 220, may be stored in another memory mounted on the substrate 150.

Figure 6 is a flowchart showing a driving operation of LRA140 by the drive unit 200 of FIG. 5. Drive device 200, when detecting a touch event on the touch panel 120 (step S601), starts the API 250 (step S602). API250 reads waveform data 240 stored in the memory 220, and outputs a drive command corresponding to the waveform data 240 to the driver IC 260 (step S603). Driver IC260 receives a drive command waveform data 240 D / A (Digital to Analog) conversion (step S604), and amplified by an amplifier or the like (step S605). Driver IC260 outputs the amplified signal to LRA140 (step S606).

Hereinafter, a description will be given first to third input drive waveform used as the waveform data 240. Figure 8 shows an example of the first input waveform applied to the LRA140 7 (drive signal). The first input drive waveform, free vibration by the natural frequency of LRA140 followed after application stop of the driving signal, i.e. a drive waveform that can be sharply suppressed residual vibration.

The first input drive waveform, the natural frequency of LRA140 (i.e. resonance frequency) when the f0, f1 = (m / n) × f0 (m, n are natural numbers and m ≠ n) and becomes frequency f1 the LRA140 the signal is a signal for vibrating m times.

The natural frequency f0 of LRA140 and 175 Hz, when the m = 2, n = 1, the frequency f1 = (2/1) × 175 = 350Hz drive signal. Input sine wave F based on the frequency f1 is the waveform shown in FIG. 8,
F = 0.01sin2πf1t
In represented.

When the input sine wave F is applied to the LRA140, it occurs the vibration of the natural frequency (resonance frequency) f0 of LRA140 the LRA140. That is, the LRA140, an input sine wave F frequency f1, occurs composite wave with the natural vibration f0 of LRA140, LRA140 is displaced according to the composite wave.

Figure 9 is a response waveform LRA140 when the input sine wave F as the first drive signal is applied to LRA140. In FIG. 9 (A), the waveform shown by the dotted line, indicates the forced vibration component y1 of the vibration displacement caused when the input sine wave F is applied to LRA140, the waveform shown by the solid line, shows a free vibration component y2 . Response displacement y3 when the driving signal F is applied to LRA140 is a composite wave of y1 and y2 as shown in FIG. 9 (B). At a timing T that an input sine wave F is m times (2 times) vibration to zero, the combined displacement y3 also 0. At a timing T that displacement y3 is 0, the speed of displacement of LRA140 also becomes 0, the vibration of LRA140 stops.

Figure 10 is a diagram showing an example of displacement, velocity and acceleration of LRA140. Figure 10 (A) is a diagram showing a waveform of a composite wave y3, FIG. 10 (B) is a diagram showing the rate of waveform y3 'obtained by differentiating the displacement of the composite wave y3, FIG 10 (C) is a diagram showing a waveform y3 "of acceleration obtained by differentiating the displacement of the two composite wave y3.

As can be seen from FIG. 10, the wave speed y3 'and waveform y3 "acceleration, becomes zero at the timing when the composite wave y3 is 0, the vibration of LRA140 stops at timing T.

Waveform y3 "acceleration at this time is less 0.02G in two periods within 0.01 seconds. The acceleration response is response when the user presses the key buttons 2 of the metal dome (FIG. 1 (A)) it is possible to reproduce very close, the click feeling with.

11 to 14 are diagrams for explaining the effect of the first method. Figure 11 (A) shows a waveform of the natural frequency of the drive signal applied to the LRA140. FIG. 11 (B) shows the acceleration response simulation when the drive signal of the natural frequency is applied. FIG. 11 (C) is a diagram showing the acceleration measurements of the actual electronic device.

Figure 11 (B) and as can be seen from FIG. 11 (C), the case of applying a sine wave of natural frequency f0 as a drive signal, the residual vibration appears over 0.1 seconds. In FIG. 11, 175 Hz the natural frequency f0 of LRA140, the weight of the weight 1.5g, the spring constant for supporting the weight set to 1813.5N / m, measured at the smartphone as the actual electronic device.

Figure 12 applies a driving signal of the natural frequency to LRA140, illustrating a conventional method of applying a signal waveform of the residual vibration in opposite phase. Figure 12 (A) shows a driving signal of natural frequency f0 = 175 Hz. FIG. 12 (B) in actual equipped with LRA140, a sine wave as the drive signal of FIG. 12 (A), the and, at the time of applying a reverse phase of the voltage of the vibration generated LRA140 after stop of the supply of the drive signal the measurement results of the response acceleration of the actual electronic devices. For Figure 12, the residual vibration becomes smaller than 11, such 0.05 seconds or more before the acceleration is below 0.02G human sense lower limit.

Figure 13 is a diagram showing the LRA of the acceleration response when a drive signal a signal which does not satisfy the conditions of the embodiment. FIG. 13 (A) shows the sine wave of a frequency 300Hz that do not meet certain criteria. FIG. 13 (B) shows the acceleration response at the time of simulation as a drive signal a sine wave of FIG. 13 (A). FIG. 13 (C) shows the acceleration measurement results when the sine wave shown in FIG. 13 (A) and the drive signal in an actual electronic device equipped with LRA140 of natural frequency f0 = 175 Hz.

Figure 13 (B), as can be seen from FIG. 13 (C), if the sine wave of a frequency which does not satisfy the specific condition and the drive signal, the residual vibration appears over 0.04 seconds.

Figure 14 shows the response characteristic of LRA140 when the driving signal satisfying the condition signal examples. FIG. 14 (A) shows the sine wave of satisfying the above (m = 2, the case of n = 1) Frequency 350 Hz. FIG. 14 (B) shows the response simulation at the time of applying a sine wave of FIG. 14 (A) as a drive signal. FIG. 14 (C) in the actual electronic device equipped with LRA140 of natural frequency f0 = 175 Hz, showing the measurement results of the acceleration when the driving signal a sine wave of FIG. 14 (A).

FIG. 14 (B), the as can be seen from FIG. 14 (C), 0.02 seconds after the acceleration of the residual vibration becomes less 0.02G sensing limit, the waveform of the vibration becomes a short waveform.

From the above, the waveform of vibration caused by LRA140, when the natural frequency of the LRA140 was f0, f1 = m / n × f0 (m, n are natural numbers and m ≠ n) signals at LRA140 the frequency f1 becomes m times if the drive signal a signal for vibrating, the acceleration waveform of the vibration becomes a short waveform rapidly attenuates in one to several cycles, it is possible to eliminate the residual vibration.

Natural frequency f0 may be a natural frequency of the LRA140 after incorporated into the electronic device 100 a LRA140. Drive frequency f1 is preferably error with respect to m / n × f0 is set to be 1% or less. Thus setting the frequency f1, the application of the drive signal as the residual vibration after stopping occurs, the acceleration of the vibration is not sensed human becomes less a sensing limit of the human 0.02 G, a click feeling there is no compromising.

Next, with reference to FIGS. 15 and 16, it describes a second method for reproducing the click feeling by controlling the pattern of LRA vibration.

In the second method, to note that the touch panel 120 itself, which is fixed to the housing 110 is also a vibrating member which vibrates at high frequency. In the second method, the LRA140, oscillate LRA resonance frequency f0, and supplies a drive signal that terminates at a point distant from the center of the amplitude (zero) (second driving signal). By stopping the vibration at a remote point P1 from zero, the high-frequency vibrations having a touch panel itself at the end P1 is excited. The touch panel, peak and the peak of the high-frequency vibrations of the drive signal is generated peaks superimposed, decay rapidly at the immediately one to several cycles. This sharp sense of touch, such as the click is reproduced by.

Figure 15 is a diagram illustrating the excitation of the vibration due to the resonance frequency of the touch panel. FIG. 15 (A) shows the sinusoidal waveform of the drive signal applied to LRA140, FIG 15 (B) shows the acceleration of a waveform of vibration occurring on the touch panel. In the example of FIG. 15, and 225Hz resonance frequency of LRA140, the resonant frequency having the touch panel 120 itself was 1 kHz. Figure 15 a drive signal having a waveform (A) by applying the LRA140, the low frequency vibration due LRA140, high-frequency vibration of the touch panel 120 is superimposed. Resonant frequency of the touch panel 120 here is the resonant frequency in the state in which four sides of the touch panel 120 is fixed to the housing 110.

The where to excite the high-frequency vibration of the touch panel and terminating P1 of the driving waveform, during driving will vibration of the resonance system is amplified progressively, vibration amount becomes maximum at the end of the driving waveform, the acceleration peak of the high frequency vibrations This is because the maximum of the superimposed effect is obtained.

A drive waveform input to LRA140 a 225Hz sine wave, the end of the drive waveform so that the peak of the amplitude, the driving time is 7/4 period. Immediately after the driving waveform is finished, the voltage causes a sharp change to zero from its peak. Thus, as shown in FIG. 15 (B), the top panel surface, substantially overlaps the peak position of the acceleration amplitude of the low frequency vibrations by LRA drive, the peak of the acceleration amplitude of the high frequency vibration due to the high-order vibration of the top panel Occur.

Reason for the low frequency signal and the peak of the high frequency vibration is substantially overlap, Datosuruto low frequency vibration frequency vibration at 225 Hz is 1 kHz, 225 Hz because of the resonance frequency, the acceleration waveform with respect to the driving waveform [pi / 2 phase difference occurs cage, the peak of the drive waveform at the termination is zero point of the acceleration waveform. Therefore, the peak of the low frequency vibrations should peaking at quarter cycle after the end driving waveforms. If this is converted to time it becomes after about 1.11ms.

On the other hand, high-frequency vibration of the touch panel is rising from zero at the end of the driving waveform (at the end P1), it should greet same direction of the peak and the low-frequency vibrations in the 3/4 cycles. If this is converted to the time the after 0.75ms. Therefore, the peak of the high frequency vibration of the driving signal and the touch panel is generated by the time difference 0.36Ms. The peak of high frequency vibrations, the intensity of the peak of the low frequency vibration overlaps a position of about 87%.

Figure 16 shows an acceleration waveform when applying the driving signal to shorten the as comparative examples, simply LRA of vibration time. Vibration of the touch panel 120, the time and rise for amplifying the vibration amount by shortening the driving time of LRA140, acceleration of the amplified vibrations requires time to decay below 0.02 G, the vibration continue for several cycles. In the example of FIG. 16, it takes time of about 25msec before decay from rising, the vibration is continued for about four cycles. Therefore not be obtained sharp tactile feel such as click feeling.

In FIG. 15 (B) In contrast, the vibration frequency 1kHz has risen sharply, the vibration is also reduced dark at about 2 cycles. It is possible to stop the vibration in a short time from the sharp peak.

Figure 17 shows a variation of the driving signal of Figure 15. In the example of FIG. 17, shifting the end of the drive signals, i.e. the point at which to excite the high-frequency vibrations from P1. FIG. 17 (A) shows the sinusoidal waveform of the drive signal applied to LRA140, FIG 17 (B) shows an acceleration waveform of vibration occurring on the touch panel.

In FIG. 17 (A), since the end P2 of the drive signal is shifted from the peak of the amplitude, the driving time is 7/4 period + 0.36msec. In P2, causing an abrupt change from 87% strength to zero with respect to the peak of the drive waveform. Thus, as shown in FIG. 17 (B), since the discontinuous variation of the end of the drive waveform is small, the amplitude peaks of the high frequency is slightly smaller than 15, the peak of the low frequency signal and the high frequency signal There overlap snugly.

Figure 18 is a diagram for explaining a third driving signal applied to LRA140. As a third method utilizes both satisfy the drive signals of the first and second methods described above. FIG. 18 (A) the voltage waveform of the third driving signal, FIG. 18 (B) is an acceleration waveform of vibration occurring in the touch panel by the application of the third drive signal.

Drive signal G in FIG. 18 (A) the frequency f1 = (m / n) × f0 (m, n are natural numbers and m ≠ n) a signal obtained by shifting the [pi / 2 phase from the sine wave and becomes frequency f1 m a signal to times vibrate, and is a signal that terminates at a point other than the center of the amplitude (zero). In the example of FIG. 18, an m = 3, n = 2, and terminates the P3 point having the maximum amplitude value.

To drive signals G a m period and amplitude peaks of is a signal that terminates and cosine wave shifted from sinusoidal wave + [pi / 2 phase drive signals G. Again, the peak of the high frequency vibration excited on the touch panel at the peak of the low frequency of the drive signal is superimposed. In this example, the resonant frequency of the touch panel 120 (high frequency vibrations) is set to the resonance frequency in the state in which four sides of the touch panel 120 is fixed to the housing 110. In the case where LRA140 is disposed in the housing 110, the resonant frequency of the touch panel 120, a resonance frequency in a state where the touch panel 120 is incorporated in a housing 110. Data representing the waveform of the drive signal G shown in FIG. 18 (A) is stored in the memory. Waveform data, the frequency f1 of the drive signal G, the amplitude, phase, may be information such as a period (value of m), it may be a waveform itself of the drive signal G.

As shown in FIG. 18 (B), the top panel surface, substantially overlaps the peak position of the acceleration amplitude of the low frequency vibrations by LRA driving, acceleration peak amplitude of the high frequency vibration due to the high-order vibration of the top panel is generated. Reason for the low frequency signal and the peak of the high frequency vibration is almost overlap, the low-frequency vibration 337.5Hz (f1 = 225Hz × 3/2), Datosuruto frequency vibration is 1 kHz, higher than the resonant frequency, to take into account the attenuation , acceleration waveform is phase difference π occurs with respect to the driving waveform, the peak of the drive waveform at the termination is also a peak in an acceleration waveform. Therefore, high-frequency rises from the peak of the low frequency. When high-frequency vibrations is to 1 kHz, it should peak in the low-frequency 0.25ms peak (1/4 cycle) delay high cycle occurs.

Figure 19 shows an example of an input waveform of the third driving signal applied to LRA140. More precisely, the waveform shown in FIG. 19, by applying a driving signal G to LRA140, it shows the force applied to LRA140.

The natural frequency f0 of LRA140 and 225 Hz, when the m = 3, n = 2, the frequency f1 of the drive signal G becomes f1 = (3/2) × 225Hz = 337.5Hz. Waveform of FIG. 19 is an input cosine wave G1 of the phase of the sinusoidal F frequency f1 [pi / 2 shifted by. Sine wave F is expressed by F = 0.01sin2πf1t.

When the input cosine wave G1 is applied to LRA140, LRA140 starts vibrating at the natural frequency f0 of LRA140 (i.e. resonance frequency). LRA140 includes an input cosine wave G1 of the frequency f1, displaced according to the synthesized wave of the vibration due to the natural frequency f0 of LRA140.

Figure 20 shows the LRA displacement response when input drive signal of FIG. 19 is applied to LRA140. In FIG. 20 (A), the waveform shown by the dotted line shows the structure vibration component y11 of vibration displacement which occurs when the input cosine wave G1 is applied to LRA140, waveform shown by a solid line shows a free vibration components y12. Response displacement y13 when cosine wave G1 is applied to LRA140 is a composite wave of y11 and y12.

FIG. 20 (B) is a diagram showing an example of a displacement of the composite wave y13 of the waveform y11 and waveform y12. Composite wave y13 is seen that the input cosine wave G1 becomes 0 at 0. The timing T1.

At timing T1 at which the composite wave y13 is 0, to become 0 even speed of displacement of LRA140, vibration of LRA140 stops.

Figure 21 is a diagram showing an example of a third acceleration LRA displacement speed and displacement methods. Figure 21 (A) is a diagram showing the waveform of a composite wave y13, FIG 21 (B) shows the wave speed y13 'obtained by differentiating the displacement of the composite wave y13 is FIG 21 (C) is synthesized wave y13 it is a diagram of a waveform y13 "of the resulting acceleration by differentiating the displacement twice.

As can be seen from FIG. 21, the wave speed y13 'and waveform y13 "acceleration, the composite wave y13 becomes zero at 0. The timing T1. That vibration of LRA140 stops at timing T1.

Waveform y13 "in this case acceleration is stopped at three periods within 0.01 sec. Therefore, in the third method, the acceleration of the vibration within 0.01 sec becomes less 0.02 G, click on the button 2 of the metal dome type tactile, such as can be expressed.

In Figure 19-21, the amplitude of the input cosine wave G1 is assumed to stop the vibration in that the peak is not limited to this. End of the driving signal, for example, the waveform indicative of acceleration of the vibration of the touch panel 120, a click feeling may be any that can produce a sharp peak representing. End of the driving signal may be any other than 0 is the center point of the amplitude, the end of the drive signal is preferably as a point close to the peak amplitude.

Further, in the electronic device 100 of this embodiment, it is assumed that LRA140 is attached to the surface of the housing side of the touch panel 120 is not limited to this. LRA140 may for example be arranged in the vicinity of the housing 110 substrate 150 disposed therein.

Figure 22 is a diagram LRA is an example of electronic equipment provided in the housing. In the electronic device 100A shown in FIG. 22, LRA140 is disposed in the vicinity of the substrate 150 provided in the housing 110.

Figure 23 is a schematic configuration diagram of an electronic device 300 for generating various vibration patterns by utilizing the drive signal described above. By applying the first to third drive signals described above in LRA140, it is possible to generate a sharp vibrations short on the touch panel. By utilizing this, it is possible to generate a variety of vibration patterns by varying the timing of generating the basic waveform. Various vibration patterns, various functions realized by the electronic device, for example application, e-mail of the subject matter displayed when an electronic mail opening, by linking the character or pictogram or the like used in an electronic mail, various users feel it is possible to provide a such.

Electronic device 300 includes CPU 210, memory 320, driver IC 260, LRA140, display 301, touch sensor 302, input unit 303, the signal processing unit 304, a communication unit 305. In the control unit 210 and the driver IC 260, constituting the drive control unit 270 that drives and controls the LRA140. A display 301 such as a liquid crystal, constituting an input unit 303 such as a touch pad, a touch sensor 302, the touch panel 120 of electronic device 300 (see FIG. 3).

CPU210 includes a vibration pattern link unit 215, the analysis unit 216. Vibration pattern link unit 215 has a function of the electronic device 300, in correspondence with the vibration pattern using the drive signal to LRA140, generates link information.

Character case, it is not only the type of applications that are installed, the importance and the subject is displayed at the time of the e-mail opening, is used in the e-mail referred to as a "function" of the electronic device 300 in a range of examples and claims also intended to include or emoticons like.

Analysis unit 216, for example, if it contains a mark or word indicating the specific content or subject to an e-mail, to analyze whether such a specific character in the body of the e-mail, pictograms are used.

Memory 320 includes a drive control program storage area 230, the waveform data storage area 240, API 250, the vibration pattern storage area 321, a link information storage area 322. The link information storage area, the vibration pattern link unit 215 generated link information is stored. Vibration pattern storage area 321 stores a variety of vibration patterns having different generation timing of the driving waveforms applied to the LRA140 (or LRA of the vibration waveform).

CPU210, when any of the functions of the electronic device 300 has been selected, by referring to the link information of the link information storage area 322, reads the corresponding vibration pattern, generates a driving signal for LRA140 in generation timing determined by the vibration pattern to instruct the driver IC260 so as to. Driver IC260 applies a driving signal to LRA140 at the specified generation timing. Drive signal applied herein may be any of the first to third drive signals described with reference to FIGS. 1 to 22.

Figure 24 shows an example of the link information. Link information in FIG. 24, Web browser, e-mail, camera, and is linked with the application of the electronic device 300 of the calculator, such as, and a vibration pattern. Vibration pattern is a one waveform vibration waveform caused by the application of the basic driving waveform or driving waveforms. It waveforms of driving signals applied to LRA140 may be basic waveform, the acceleration waveform occurring on the touch panel may be basic waveform by application of a drive signal.

In Figure 24, from the top, a vibration pattern is generated by the single (pattern 1), a vibration pattern is generated two consecutive (pattern 2), the second from the spaced 1 waveform component timing after generating the first waveform vibration pattern for generating a waveform (pattern 3), the vibration pattern to generate a second waveform from leave two waveforms minute timing after generating 1 waveform (pattern 4), are each application and linked .

Vibration pattern 1 is the link function and the vibration pattern 1 of the Web browser, vibration pattern 2 is the camera function and the link. Vibration pattern 3 is the e-mail function and the link, vibration pattern 4 is the calculator function and the link. Such link information may be set in the electronic device 300 by default, are set by the input operation of the user, it may be stored.

FIG. 25 is an example in which the degree of importance was (important e-mail, urgent mail, etc.) or e-mail subject (happy mail, sad e-mail, etc.) to link and the vibration pattern of e-mail. One of the vibration waveform underlying uses the same waveform as FIG. 24. Happy mail is linked with the vibration pattern to generate a third waveform from at a single waveform component timing after generating two waveform (pattern 5).

Figure 26 is an example in which link and pictograms and emoticons and vibration pattern for email.

Figure 27 is a diagram showing a storage example of the link information. Link information, the link information storage area 322 of the memory 320 of the electronic device 300 may be stored in the form of a link information table 331, 332, 333. Vibration pattern stored in the memory 320, the frequency, amplitude, phase, and the basic waveform information identified in a cycle, for example, may be represented by the generated timing information represented by on / off.

Figure 28 is an input operation of the user, an example of setting or changing link information. In Figure 28 (A), the user calls the setting change screen on the display screen of the electronic device 300 selects the "vibration pattern setting" or "vibration pattern Change". When you select one, in Figure 28 (B), as set / change the subject item, "application", "when the e-mail opening", items such as "e-mail text character" is displayed. Selecting one of the items, in FIG. 28 (C), the vibration patterns stored in the vibration pattern storage area 321 (see FIG. 23) is read out and displayed. Here vibration pattern displayed in is desirably a picture that the user can recognize visually vibration pattern as shown in FIGS. 24 to 26. The user selects a desired vibration pattern and selects the setting button, the link information associating the vibration pattern and the selected function item is generated. Further display the necessity of the inquiry screen save the next screen (not shown), when the user selects the Save, the link information is stored in the vibration pattern storage area 321.

Figure 29 shows an example of the use of time that links the function and the vibration waveform of the electronic device (e.g., smart phone) 300. In Fig. 29 (A), the application selection screen is displayed on the smartphone 300. Which of these Selecting "E-mail" icon with a finger, change the color of the icon as shown in FIG. 29 (B), as shown in FIG. 29 (C), occurs vibration at the set waveform smartphone 300 or touch panel is vibrated. According to an example of the link information in Fig. 24, a short sharp vibration as a click is generated twice at an interval of 1 waveform minute. Although not shown, after this, the e-mail application is started.

Because you have set different vibration patterns depending on the type of application, the user can confirm that the application as intended was selected tactilely. Also, when using the first to third one of the drive signal, one of the oscillation is less than 0.02 seconds, in order to rapidly stop within more preferably 0.01 seconds, clearly a user's finger vibration it is possible to recognize the pattern.

Figure 30 is the contents of the received mail (importance or subject) shows an example of using when attached link vibration pattern. In Figure 30 (A), are displayed received mail list screen to the smartphone 300. Among these, for example, in the mail from the third of C's from the top has been added vibration mark [~]. This, for example, is referred to as a "vibe mail". When the user selects the mail Mr. C is a Vibe mail with a finger changes the third color mail as shown in FIG. 30 (B), as shown in FIG. 30 (C), smartphones vibration pattern set 300 or touch panel to vibrate. According to an example of the link information in Fig. 25, after the short sharp vibration as a click is twice consecutively, the vibration of the third occurs at a first waveform interval. Although not shown, after this, the e-mail you have selected is opened.

In the example of FIG. 30, that the sender C's are attached vibe mail function in the e-mail is indicated by Vibe mark [-]. By varying the type of vibrator mark, "important mail" indicates such as "emergency mail", it may link the different vibration patterns for each. Alternatively Start analysis unit 216 by the detection Vibe mark, "happy", "important", to extract a word such as "urgent", may read previously linked vibration pattern based on the link information.

By setting the vibration pattern corresponding to the importance and the subject of the e-mail, it is possible that the sender obtain vibrations according to the content of the attached Vibrate mail function in the e-mail, visual, in addition to hearing a method called touch in it is possible to transfer the contents of the e-mail.

Figure 31 shows an example of the use of when attached link pictograms and emoticons and vibration pattern which is used in e-mail. FIG. 31 (A) shows the e-mail text screen of the smartphone 300. Sentence in the face character "(^ _ ^)" is described. Emoticons in this example are displayed in italics. This indicates that is linked vibration pattern to emoticons. When emoticons portion selects a finger, changes color emoticons parts as in FIG. 31 (B), as shown in FIG. 31 (C), a smart phone 300 or the touch panel is vibrated by the vibration pattern set. Since the set vibration waveform corresponding to the emoticon or pictograms, making it possible to present a representation in a way that touch other than visual.

By a possible new information transmitted by the touch panel input, it is possible to further promote the user communication, can provide a new value as information devices. Link information, such as by infrared short range communication, in a specific group can be shared within a family.

100, 100A, 300 electronic device 110 housing 120 touch panel 140 LRA
200 drive unit 210 CPU
215 vibration pattern link unit 216 analyzing section 230 drive control program 240 waveform data storage area 260 driver IC
270 drive control section 320 memory 321 vibration pattern storage area 322 the link information storage area

Claims (13)

  1. An electronic device having a touch panel,
    An actuator for vibrating the touch panel,
    A memory for storing a function of the electronic device has the link information associating the plurality of vibration patterns having different generation timing of the drive signal applied to the actuator,
    Said when any function is selected in the electronic device, by referring to the link information, and applies the drive signal to the actuator in a corresponding vibration pattern drive control unit,
    Wherein the drive signal,
    The resonance frequency of the actuator when the f0, sine wave f0 × m / n (m, n are natural numbers and m ≠ n) a first drive signal that repeats m times,
    A sine wave of the resonance frequency f0 of the actuator, and a second drive signal that terminates at a point other than the center of the amplitude of the sine wave, and the resonance frequency of the actuator when the f0, f0 × m / n sine wave (m, n are natural numbers and m ≠ n) third drive for terminating the phase [pi / 2 shifted waveforms a vibrating repeated m times, and at a point other than the center point of the amplitude of the vibration signal,
    An electronic apparatus, characterized in that either.
  2. The memory has a storage area for storing waveform information representing at least one of the first to third drive signals,
    The drive control unit is applied when the function of the electronic device is selected, reading out the waveform information from said memory, said driving signal represented by the waveform information, to the actuator at a generation timing determined by the vibration pattern the electronic device according to claim 1, characterized in that.
  3. Depending on the user's input operation, and one function of the electronic apparatus, associating the link portion and the desired vibration pattern selected from the plurality of vibration patterns,
    The electronic device according to claim 1, further comprising a.
  4. By the application of the first drive signal, the touch panel is vibrated by the composite waveform of the vibration in the resonance frequency f0 of the first driving signal and the actuator, after m time vibration of the first drive signal the electronic device according to claim 1, characterized in that vibration is stopped.
  5. By the application of the second driving signal, the touch panel, the attenuation immediately after the superimposed peaks overlapped the peak of vibration at a frequency higher than the f0 having the peak with the touch panel itself oscillation at the resonant frequency f0 the electronic device according to claim 1, characterized in that.
  6. The actuator electronic device according to claim 1, characterized in that it is arranged on a surface opposite to the display surface of the housing or the touch panel of the electronic apparatus.
  7. A function of the electronic apparatus, the link information associating the plurality of vibration patterns having different generation timing of the vibration waveform of the drive signal stored in the first memory area,
    Wherein when any function is selected in the electronic device, by referring to the link information, and applies the drive signal to the actuator of the electronic device in the generation timing of the corresponding vibration pattern,
    By the drive of said actuator, to vibrate the touch panel of the electronic device in the vibration pattern,
    The driving waveform,
    The resonance frequency of the actuator when the f0, sine wave f0 × m / n (m, n are natural numbers and m ≠ n) a first drive signal that repeats m times,
    A sine wave of the resonance frequency f0 of the actuator, and a second drive signal to stop the vibration in terms other than the center of the amplitude of the sine wave, and the resonance frequency of the actuator when the f0, f0 × sinusoidal m / n (m, n are natural numbers and m ≠ n) the terminating the phase [pi / 2 shifted waveforms a vibrating repeated m times, and at a point other than the center point of the amplitude of the vibration 3 of the drive signal,
    Vibration providing method characterized in that it is selected from.
  8. Stores waveform information representing at least one of the first to third driving signal to the second memory area,
    When the function of the electronic device is selected, reading out the waveform information from said second memory region,
    Vibration method of claim 7, wherein applying said driving signal specified by the read out waveform data, to the actuator at a generation timing of the vibration pattern.
  9. Depending on the user's input operation, and one function of the electronic apparatus, and a desired vibration pattern in the plurality of vibration patterns correspondence,
    Vibration method of claim 7, wherein the storing the correlated link information in the first memory area.
  10. The step of changing the link information the link information in accordance with the set to the electronic device by default, the input operation of the user,
    Vibration method of claim 7, further comprising a.
  11. By applying the first drive signal to the actuator, the touch panel is vibrated by the composite waveform of the resonant oscillation of the first driving signal and the actuator, the vibration after m time vibration of the first drive signal vibration method of claim 7, wherein the stopping.
  12. By applying the second drive signal to the actuator, the vibration of the touch panel, the peak of vibration at a frequency higher than the f0 included in the touch panel itself and the peak of the vibration of the resonance frequency f0 is superimposed vibration method of claim 7, wherein the attenuating immediately after the superimposed peaks.
  13. On the computer,
    When any of the functions of the electronic device is selected, a process of the link information stored in the memory is read a vibration pattern corresponding to the selected function,
    In generation timing determined by the vibration pattern, by applying a drive signal to the actuator of the electronic device, a process for vibrating the touch panel of the electronic device in the vibration pattern,
    The vibrating providing program for executing,
    As the drive signal,
    The resonance frequency of the actuator when the f0, sine wave f0 × m / n (m, n are natural numbers and m ≠ n) a first drive signal that repeats m times,
    A sine wave of the resonance frequency f0 of the actuator, and a second drive signal to stop the vibration in terms other than the center of the amplitude of the sine wave, and the resonance frequency of the actuator when the f0, f0 × sinusoidal m / n (m, n are natural numbers and m ≠ n) the terminating the phase [pi / 2 shifted waveforms a vibrating repeated m times, and at a point other than the center point of the amplitude of the vibration third drive signal a third driving signal,
    Vibration providing program characterized by applying a either.
PCT/JP2012/064941 2012-06-11 2012-06-11 Electronic device and vibration provision method WO2013186841A1 (en)

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EP3070578A1 (en) 2015-03-18 2016-09-21 Alps Electric Co., Ltd. Electronic apparatus and vibration control method

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EP3070578A1 (en) 2015-03-18 2016-09-21 Alps Electric Co., Ltd. Electronic apparatus and vibration control method
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