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JP2013162167

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JP2013162167
Abstract: A terminal device is provided in which a panel surface is used as a speaker (receiver) in
a terminal device, and distortion (pressure force) can be detected to reduce the size of the
terminal device. A switching unit for inputting an input electrical signal or outputting an output
electrical signal, a vibration panel, and a vibration device for converting the input electric signal
into vibration and transmitting the converted vibration to the vibration panel And a vibration
device which converts the pressure transmitted from the vibration panel into an electric signal
and outputs the converted electric signal as the output electric signal to the switching unit.
[Selected figure] Figure 1
I / O device, I / O method, and I / O program
[0001]
The present invention relates to an input / output device, an input / output method, and an input
/ output program.
[0002]
In recent years, small-sized terminal devices such as mobile phones have become widespread.
Some terminal devices have various functions in addition to telephone calls and text input /
output. In order to realize diversification of functions, a terminal device equipped with a panel
speaker that vibrates a panel to generate sound, and a terminal device equipped with a pressure
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1
sensor (pressure sensor) that detects an operation input by the user It is being developed.
[0003]
For example, Patent Document 1 discloses a vibration panel which is supported on a mobile
phone body having a liquid crystal display device by floating via a gasket and generates a sound
wave, and is mounted on and bonded to the vibration panel to convert an electrical voice signal
into acoustic vibration. And a vibrating element for converting, characterized in that the
thickness of the vibrating panel is gradually reduced as it proceeds from the vibrating element to
the peripheral portion of the vibrating panel, and the entire panel is vibrated uniformly. It
describes about a panel speaker. In Patent Document 2, the touch panel portion, the display
panel portion, and the pressure sensor portion are accommodated between the main plate
portion of the first housing portion and the main plate portion of the first portion of the second
housing portion. The electronic device is described in which the elastic portion of the pressure
sensor portion is pre-compressed to suppress the variation in sensitivity to the pressing force.
[0004]
JP 2007-82009 JP 2011-86191 JP
[0005]
However, the vibration element (piezoelectric element) in Patent Document 1 is used only to
realize the function of converting an electrical sound signal into acoustic vibration.
Further, the pressure sensor in Patent Document 2 is used only to realize the function of
determining the pressure applied by the user as a change in capacitance.
[0006]
Therefore, when simultaneously mounting the functions of the panel speaker and the pressing
force sensor, it is necessary to mount both of the corresponding devices, which is an obstacle to
miniaturization.
[0007]
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2
(1) The present invention has been made to solve the above-described problems, and one aspect
of the present invention is to provide a switching unit that receives an input electrical signal or
outputs an output electrical signal, a vibration panel, and the vibration. The vibration device
includes a vibration device attached to a panel, and the vibration device converts the input
electric signal input through the switching unit into vibration and transmits the converted
vibration to the vibration panel, and the vibration device It is an input / output device
characterized by converting distortion transmitted from the vibration panel into the output
electric signal and outputting it as a pressing signal through the switching unit.
[0008]
(2) Another aspect of the present invention is the input / output device described above, wherein
the switching unit transmits the vibration converted from the input electric signal to vibration to
the vibration panel, or the vibration panel Switching between inputting the input electrical signal
and outputting the output electrical signal based on a switching signal instructing whether to
convert the distortion transmitted from the output electrical signal into the output electrical
signal.
[0009]
(3) Another aspect of the present invention is the input / output device described above, wherein
the vibration device converts the input electric signal into vibration and transmits the converted
vibration to the vibration panel. And a second vibration element that converts the distortion
transmitted from the vibration panel into the output electric signal and outputs the electric
signal.
[0010]
(4) Another aspect of the present invention is the input / output device described above, wherein
the second vibrating element converts the input electric signal into vibration and transmits the
converted vibration to the vibrating panel. The switching unit is connected to the second
vibrating element, and the input electric signal is input to the second vibrating element based on
the switching signal or the second vibrating element is connected to the second vibrating
element. It is characterized by switching whether to output an output electrical signal.
[0011]
(5) Another aspect of the present invention is the above-described input / output device, which is
a position detection unit that detects position information representing a position touched by the
vibration panel, and distortion transmitted from the vibration panel. A pressure detection unit for
converting the output electrical signal and detecting the magnitude of distortion applied to the
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vibrating device from the magnitude of the output electrical signal; distortion at a position
contacting the vibrating panel; And a pressure correction unit that is calculated based on the
magnitude of distortion detected by the pressure detection unit.
[0012]
(6) Another aspect of the present invention is the input / output device described above, wherein
the vibration panel is a panel or a protective plate of a display unit for displaying an image.
[0013]
(7) Another aspect of the present invention is the input / output device described above, wherein
the vibration panel is a panel surface that covers the position detection unit.
[0014]
(8) Another aspect of the present invention is the input / output device described above, wherein
the frequency band of the output electrical signal includes a component of a band in which
vibration can be perceived.
[0015]
(9) Another aspect of the present invention is a vibration panel and a vibration device attached to
the vibration panel, wherein the strain received by the vibration panel is converted into an output
electric signal, and an input electric signal is converted into vibration. An input / output method
in an input / output device including a vibration device for transmitting the vibration to the
vibration panel, wherein the input / output device outputs an output electric signal as a
distortion signal or the input electric signal And an output method.
[0016]
(10) Another aspect of the present invention is a vibration panel and a vibration device attached
to the vibration panel, wherein the strain received by the vibration panel is converted into an
output electric signal, and an input electric signal is converted into vibration. Causes the
computer of the input / output device including the vibration device to transmit the vibration to
the vibration panel to execute a procedure to switch whether the output electric signal is output
as a distortion signal or whether the input electric signal is output to the vibration panel Input
and output program.
[0017]
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According to the present invention, miniaturization can be achieved by using a device
corresponding to a panel speaker as a device corresponding to a pressure sensor.
[0018]
It is a surface figure showing the appearance of the terminal unit concerning a 1st embodiment
of the present invention.
It is a sectional view showing the section of the terminal unit concerning this embodiment.
It is a block diagram which shows the internal structure of the terminal device which concerns on
this embodiment.
It is a perspective view showing the structure of the vibration device concerning this
embodiment.
It is a sectional view showing one section of a vibrating device concerning this embodiment.
It is a sectional view showing other section of a vibrating device concerning this embodiment.
It is a sectional view showing other section of the terminal unit concerning this embodiment.
The flowchart showing the input-output process which concerns on this embodiment is
represented.
It is a surface figure showing the appearance of other examples of composition of a terminal unit
concerning this embodiment.
It is sectional drawing showing the cross section of the other structural example of the terminal
device which concerns on this embodiment.
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It is a block diagram which shows the internal structure of the terminal device which concerns on
the 2nd Embodiment of this invention.
It is a perspective view showing the structure of the vibration device concerning this
embodiment.
It is a sectional view showing one section of a vibrating device concerning this embodiment. It is
a sectional view showing other section of a vibrating device concerning this embodiment. It is a
flow chart showing amendment processing of a press value concerning a 3rd embodiment of the
present invention. It is a figure showing an example of the relation between the operation input
position concerning this embodiment, and the position of a vibrating device. It is a figure
showing an example of press amendment information concerning this embodiment. It is a figure
showing the other example of the press correction information which concerns on this
embodiment. It is a block diagram showing the internal configuration of the modification of the
terminal unit concerning the above-mentioned embodiment. It is a block diagram showing the
internal configuration of the other modification of the terminal device which concerns on the
above-mentioned embodiment.
[0019]
First Embodiment Hereinafter, a first embodiment of the present invention will be described with
reference to the drawings. FIG. 1 is a surface view showing an appearance of a terminal device 1
(input / output device) according to the present embodiment. The terminal device 1 is configured
to include a housing 10, a vibrating device 16, and a vibrating panel 18. The housing 10
accommodates each component of the terminal device 1. The vibrating device 16 has an
elongated shape and is disposed near a portion of the front or back surface of the vibrating panel
18, for example, the upper end of the back surface of the vibrating panel 16 of FIG. The vibrating
device 16 generates a vibration based on the input electric signal, transmits the generated
vibration to the vibrating panel 18, and vibrates the vibrating panel 18. The vibration device 16
can constitute, for example, a speaker or a receiver by vibrating the vibration panel 18, or a bone
conduction receiver which vibrates a bone (for example, a skull) and directly transmits it to an
auditory nerve. It is an electroacoustic transducer. The vibrating device 16 also converts the
strain transmitted from the vibrating panel 18 into an electrical signal. This distortion is provided
by depressing a partial area of the vibrating panel 18. Thus, the signal value of the converted
electrical signal represents the pressure.
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[0020]
FIG. 2 is a cross-sectional view showing a cross section taken along line A-A 'of the terminal
device 1 of FIG. The terminal device 1 shown in FIG. 2 further includes a position detection unit
19. For example, a part of the housing 10 of the input / output device may be applied to the
vibration panel 18. The vibration panel 18 transmits the distortion due to the received operation
input to the vibration device 16. The position detection unit 19 is provided on the back surface of
the vibration panel 18. The position detection unit 19 detects a position at which the vibration
panel 18 receives an operation input (for example, a position at which the user's finger is in
contact). The position detection unit 19 is, for example, a touch pad used in a notebook computer
or the like. Thereby, the presence or absence of contact to the vibration panel 18 and the
position where the contact is made can be detected. The position detection unit 19 outputs
position information indicating the position at which the operation input is received to a position
input unit 116 and a pressure correction unit 114 described later. The position detection unit 19
outputs, as the above-described position information, information representing the position at
which the sensor is disposed, for example, by providing a plurality of sensors that detect
fluctuations in capacitance when the finger is in contact.
[0021]
FIG. 3 is a block diagram showing the configuration of the terminal device 1 in more detail. As
shown in FIG. 3, the terminal device 1 includes an input / output unit 11, a control unit 12, an
antenna unit 13, a communication unit 14, and a decoding unit 15. The input / output unit 11
includes a vibration device 16, a switching unit 112, an audio output unit 113, a pressure
correction unit 114, a pressure input unit 115, a position detection unit 19, and a position input
unit 116.
[0022]
The switching unit 112 is, as an example, a two-pole double-throw switch, and includes contacts
A and B and a movable segment C. Based on the switching signal input from the switching
control unit 122, the input electrical signal input from the audio output unit 113 is output to the
vibrating device 16 through the contact point A and the movable segment C, or the electrical
input from the vibrating device 16 A signal is output to the pressure correction unit 114 via the
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movable segment C and the contact point B. The switching unit 112 turns the movable segment
C to the contact point A when the input switching signal indicates that the input electrical signal
from the audio output unit 113 is output to the vibrating device 16. At this time, the switching
unit 112 outputs the input electrical signal from the audio output unit 113 to the vibrating
device 16. The switching unit 112 turns the movable segment C to the contact point B when the
input switching signal indicates that the output electrical signal from the vibration device 16 is
input to the pressure correction unit 114. At this time, the switching unit 112 outputs the output
electrical signal from the vibrating device 16 to the pressure correction unit 114.
[0023]
The audio output unit 113 generates the decoded audio signal input from the decoding unit 15
as an output electrical signal and outputs the generated electrical signal to the switching unit
112. The pressure correction unit 114 calculates the magnitude of strain (pressure) applied to
the vibrating device 16 from the output electrical signal from the switching unit 112, and
represents the position at which the vibration panel 18 from the position detection unit 19
receives an operation input. Correction is performed based on the position information, and is
output to the press input unit 115.
[0024]
The pressure input unit 115 outputs, to the terminal state control unit 123, distortion (pressure
force) at a position where the vibration panel 18 obtained from the pressure correction unit 114
receives an operation input. The position input unit 116 outputs the position information input
from the position detection unit 19 to the terminal state control unit 123.
[0025]
The control unit 12 includes a communication control unit 121, a switching control unit 122,
and a terminal state control unit 123. The communication control unit 121 is a communication
state (for example, communication start request, during communication, communication)
performed between the terminal device 1 and another device (for example, base station device)
under the control of the terminal state control unit 123. Managing and controlling the type of
data to be transmitted / received (eg, voice, text, etc.) The communication control unit 121
outputs control information / state indicating the communication state and the type of data to
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the communication unit 14 and the terminal state control unit 123.
[0026]
The switching control unit 122 instructs the switching unit 112 to switch whether the terminal
device 1 performs voice reproduction or distortion (pressure) input based on the instruction
notified from the terminal state control unit 123. The instruction notified to the switching control
unit 122 is that the terminal state control unit 123 determines the control information / state or
the like input from the communication control unit 121. For example, when the terminal control
unit 123 is notified that the state of the communication control unit 121 is a voice
communication state, the switching control unit 122 transmits from the switching unit 112 to
the switching unit 112 according to an instruction from the terminal state control unit 123. A
switching signal is output to output an output electrical signal to the vibration device 16. On the
other hand, when it is desired to input distortion (pressing force) from the vibration panel in the
terminal state control unit 123 other than the above-described voice communication state, the
switching control unit 122 sends the distortion to the switching unit 112 A switching signal is
generated so as to output the output electrical signal from the vibration device 16 to the
pressure correction unit 114.
[0027]
The terminal state control unit 123 controls the operation of the terminal device 1 based on the
operation input signal input from the position input unit 116 or the press input unit 115. For
example, the case where the display unit of the terminal (not shown) here displays a list of a
plurality of character strings representing the function names to be selected to the user will be
described. That is, the position where the character is displayed is selected in the position input
unit 116 by the position input signal, and in the press input unit 115, the press input signal
indicates a press exceeding a predetermined threshold. At this time, the terminal state control
unit 123 determines that the function name corresponding to the character string is selected,
and activates the function for the selected function name.
[0028]
The antenna unit 13 inputs a radio band signal received from another device (for example, a base
station device) to the communication unit 14. The communication unit 14 downconverts the
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radio band signal input from the antenna unit 13 to generate a base band signal. If the control
information input from the communication control unit 121 indicates that the communication
state is in communication and the type of data is voice, the communication unit 14 demodulates
the generated baseband signal and demodulates it. Generate an audio signal. The communication
unit 14 outputs the voice signal after demodulation to the decoding unit 15. The decoding unit
15 decodes the voice signal after demodulation input from the communication unit 14 using a
decoding method corresponding to the coding method used in encoding, and generates a voice
signal after decoding. . The decoding unit 15 outputs the decoded audio signal to the audio
output unit 113.
[0029]
Next, the configuration of the vibration device 16 according to the present embodiment will be
described. FIG. 4 is a perspective view showing an example of the vibrating device 16. The
vibrating device 16 includes one vibrating element 16-1 and a mold 163. As an example of a
vibration element, it is comprised by the piezoelectric element 161 and the piezoelectric
electrodes 162-1 and 162-2. The piezoelectric element 161 is, for example, a piezoelectric
bimorph type actuator which adheres a piezoelectric ceramic plate to a metal plate and applies
an electric field to the metal plate to generate a minute displacement (see, for example, JP-A-8293631). Therefore, when an AC electrical signal is input, the piezoelectric element 161
generates distortion of displacement according to the signal value as vibration.
[0030]
FIG. 5 is a cross-sectional view of the terminal device 1 of FIG. 1 along the line B-B '. The
vibrating element 16-1 is covered with a mold 163 having elasticity at its periphery, and an
electric signal (output electric signal) having a voltage value corresponding to the strain (pressing
force) transmitted from the mold 163 is a piezoelectric element 161. , And output to the
switching unit 112 via the electrodes 162-1 and 162-2. The electrodes 162-1 and 162-2 are
respectively disposed on the front surface and the back surface of the right end of the
piezoelectric element 161. The electrodes 162-1 and 162-2 output the potential difference
generated by the vibration of the piezoelectric element 161 to the switching unit 112 as an
electric signal.
[0031]
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10
In addition, the piezoelectric element 161 generates vibration in accordance with a change in
voltage value of the input electric signal (input electric signal). The electrodes 162-1 and 162-2
supply the potential difference of the input electric signal input from the switching unit 112 to
the front and back surfaces of the piezoelectric element 161. The piezoelectric element 161 is
deformed by this input electric signal to generate vibration.
[0032]
6 is a cross-sectional view showing a cross section perpendicular to the front and back direction
of the vibrating device 16 of FIG. The piezoelectric element 161 has a flat shape and is disposed
so as to be surrounded by the mold 163. The electrode 162-1 is disposed on the right end
surface of the piezoelectric element 161. The electrode 162-2 is disposed on the right end back
surface of the piezoelectric element 161. The electrode 162-2 does not appear in FIG. 5 because
it is directly behind the electrode 162-1.
[0033]
FIG. 7 is a cross sectional view showing another cross section of the terminal device 1. This crosssectional view shows a cross section passing through line B-B 'in FIG. In FIG. 6, the horizontal
direction represents the left and right direction, and the vertical direction represents the front
and back direction. The terminal device 1 further includes an elastic adhesive 117 (for example,
may be a double-sided adhesive tape). The surface of the mold 163 of the vibrating device 16
and the back surface of the position detection unit 19 are in close contact with each other by the
adhesive 117. That is, the position detection unit 19 is disposed between the front surface of the
mold 163 and the back surface of the vibration panel 18. Thus, strain (pressure) applied to the
surface of the vibration panel 18 with a simple configuration is efficiently transmitted to the
vibration element 16-1 (piezoelectric element 161) via the position detection unit 19, the
adhesive 117 and the mold 163. can do. Similarly, the vibration of the vibration element 16-1
(piezoelectric element 161) can also be efficiently transmitted to the vibration panel 18.
[0034]
Next, input / output processing performed by the input / output unit 11 will be described. FIG. 8
shows a flowchart representing input / output processing according to the present embodiment.
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11
(Step S101) The switching unit 112 receives a switching signal from the switching control unit
122. Thereafter, the process proceeds to step S102. (Step S102) The switching unit 112 indicates
that the input switching signal indicates that the input electrical signal from the audio output unit
113 is to be output to the vibration device 16, or the output correction signal from the vibration
device 16 is a pressure correction unit 114 Switch the switching segment C according to whether
it represents to input. If it indicates that the input electrical signal from the voice output unit 113
is to be output to the vibrating device 16 (step S102 Y), the process proceeds to step S103, and
the segment C is connected to the contact point A. If it indicates that the output electrical signal
from the vibration device 16 is input to the pressure correction unit 114 (Step S102 N), the
process proceeds to Step S106, and the section C is connected to the contact point B.
[0035]
(Step S103) The switching unit 112 switches so that the movable piece C contacts the contact
point A. Thereafter, the process proceeds to step S104. (Step S104) The switching unit 112
outputs the input electrical signal input from the audio output unit 113 to the vibration device
16. Thereafter, the process proceeds to step S105. (Step S105) The vibration device 16 generates
a vibration based on the input electric signal (electric signal in the voice band) input from the
switching unit 112. Thereby, the vibrating device 16 transmits the generated vibration to the
vibrating panel 18 to vibrate the vibrating panel 18. Thus, a sound wave based on the input
electrical signal is regenerated. Thereafter, the process ends.
[0036]
(Step S106) The switching unit 112 switches so that the movable segment C contacts the contact
point B. Thereafter, the process proceeds to step S107. (Step S107) The vibration device 16
converts the strain (pressure force) transmitted from the vibration panel 18 into an electric
signal, and outputs the electric signal to the pressure correction unit 114 via the switching unit
112 as an output electric signal. Thereafter, the process proceeds to step S108. (Step S108) The
pressure correction unit 114 indicates the position information input from the position detection
unit 19 and the distortion (pressure force) transmitted to the vibration device 16 output from the
vibration device 16 via the switching unit 112. The strain (pressure) at the operated position is
output to the pressing input unit 115 based on the output electrical signal. Thereafter, the
process proceeds to step S109. (Step S109) The terminal state control unit 123 causes the
position information input from the position detection unit 19 via the position input unit 116,
and distortion (pressure) at the operated position input from the press input unit 115. The
operation of the terminal device 1 is controlled based on For example, the processing related to
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function selection and character input is performed. Thereafter, the process ends.
[0037]
As described above, in the present embodiment, the vibration device 16 that transmits the
vibration obtained by converting the input electric signal to the vibration panel 18 (diaphragm)
and converts the pressing force transmitted from the vibration panel 18 into the output electric
signal is provided. Further, in the present embodiment, whether to receive an input electrical
signal or to output an output electrical signal is switched based on a switching signal that
instructs whether to perform audio reproduction. As a result, the input / output unit 11
according to the present embodiment can selectively use sound reproduction or pressure
detection with one vibration device 16, so that the terminal device 1 can be made smaller and
lighter. Further, since the input / output unit 11 according to the present embodiment has a
simple configuration as described above, it can be easily manufactured. Alternatively, the
vibration panel 18 may be constituted by a part of the outer surface of the housing 10 of the
input / output device, and the vibration device 16 may be bonded thereto. As a result, the
vibration is transmitted to the vibration panel 18 and it becomes possible to provide the user
with sound reproduction. On the other hand, the vibration device 16 can detect distortion
(pressure force) applied to a part of the housing 10. In particular, a panel surface that covers the
position detection unit 19 that can perform position detection, such as a touch pad or an input
tablet, may also be used as the vibration panel 18. As a result, the size and weight can be reduced
as described above.
[0038]
FIG. 9 is a surface view showing the appearance of another configuration example of the terminal
device 1 according to the present embodiment. The terminal device 1 is configured to include a
housing 10, a vibrating device 16, a display unit 17, and a vibrating panel 18. The feature of the
difference from FIG. 1 is that the vibration panel 18 and the position detection unit 19 (not
shown) are transparent, and the display unit 17 is disposed inside the housing at the center on
the back side of the vibration panel. is there. The display unit 17 is, for example, a liquid crystal
display. Alternatively, the display unit 17 may be an organic EL display or the like, and the user
can visually recognize the image through the transparent vibration panel 18 by optically
displaying the image. The vibrating panel 18 is, for example, a transparent protective plate that
covers a touch panel liquid crystal surface on which an image is displayed. The vibrating panel
18 is disposed in contact with the vibrating device 16 and covers most of the surface of the
terminal device 1. When the vibration generated by the vibration device 16 is received, the
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vibration panel 18 vibrates in its entirety to emit an acoustic wave. The vibrating panel 18
transmits the strain due to the applied pressing force to the vibrating device 16 when the
pressing force is applied to the surface thereof.
[0039]
FIG. 10 is a cross-sectional view of the terminal device 1 of FIG. 9 along the line A-A '. As shown
in FIG. 10, the terminal device 1 includes the display unit 17. Although the transparent position
detection unit 19 is provided on the back surface of the vibration panel 18 as in the terminal
device 1 of FIG. 2, the area is limited to the same area as the surface of the display unit 17 as
shown in FIG. 10. Also good. The position detection unit 19 detects the position where the finger
is in contact with the vibration panel 18. The combination of the transparent vibration panel 18,
the transparent position detection unit 19, and the display unit 17 is, for example, a touch panel
liquid crystal surface of a portable terminal. As a result, in accordance with the position of the
image content displayed on the display unit 17, it is possible to detect the presence or absence of
the touch on the vibration panel 18 and the position where the touch is made. Other
configurations, block diagrams, and input / output processing flow may be the same as those
constituting the terminal device 1 of FIG. 1.
[0040]
As described above, in the present embodiment, the vibration obtained by converting the input
electrical signal is transmitted to the vibration panel 18 (touch panel liquid crystal surface), and
the vibration device 16 is provided to convert the pressing force transmitted from the vibration
panel 18 into the output electric signal. . In this embodiment, the vibration device 16 is disposed
near the position of the receiver of a general cellular phone, so that the vibration panel 18
vibrates with a larger amplitude near the ear at the time of sound reproduction, so that the sound
can be efficiently generated. It can be played back. In addition, since the receiver position of the
mobile phone is usually disposed above the touch panel liquid crystal surface, the transparent
protective plate covering the touch panel liquid crystal surface can be used efficiently as the
vibration panel 18. Further, in the present embodiment, whether to receive an input electrical
signal or to output an output electrical signal is switched based on a switching signal that
instructs whether to perform audio reproduction. As a result, the input / output unit 11
according to the present embodiment can selectively use voice reproduction or press detection
with one vibration device 16, and further, since the vibration panel 18 also serves as a liquid
crystal touch panel unit, the terminal device 1 can be miniaturized. And weight saving. In
addition, since the input / output unit 11 according to the present embodiment has the simple
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configuration as described above, the manufacture is easy.
[0041]
Second Embodiment The terminal device 2 according to the present embodiment has the same
appearance as the terminal device 1. FIG. 11 is a block diagram showing an internal
configuration of the terminal device 2 according to the present embodiment. The terminal device
2 includes an input / output unit 21 instead of the input / output unit 11 of the terminal device
1. The input / output unit 21 includes an audio output unit 213 instead of the audio output unit
113 of the input / output unit 11, and includes a vibration device 26 instead of the vibration
device 16. The other configurations of the input / output unit 11, that is, the configurations of
the position detection unit 19, the switching unit 112, the pressure correction unit 114, the
pressure input unit 115, and the position input unit 116 are the same as corresponding ones in
FIG. Further, the configurations of the control unit 12, the antenna unit 13, the communication
unit 14, and the decoding unit 15 are the same as corresponding ones in FIG.
[0042]
The audio output unit 213 generates an audio signal after decoding input from the decoding unit
15 as an output electrical signal. The audio output unit 213 outputs the output electrical signal
to the switching unit 112 and the vibrating element 26-1 of the vibrating device 26.
[0043]
Next, the configuration of the vibrating device 26 will be described. FIG. 12 is a perspective view
of the vibration device 26 according to the present embodiment. FIG. 13 is a cross-sectional view
of the vibration device 26 according to the present embodiment and is a cross-sectional view
showing a cross section passing through a line corresponding to the B-B ′ line in FIG. FIG. 14 is
a cross-sectional view of the vibration device 26 according to the present embodiment, showing a
cross section perpendicular to the front and back direction of the vibration device 26 of FIG. The
piezoelectric element 261-2 and the electrodes 262-2-1 and 262-2-2 are directly above the
piezoelectric element 261-1 and the electrodes 262-1-1 and 262-1-2 respectively as shown in
FIG. Does not appear.
11-05-2019
15
[0044]
The vibrating device 26 includes a vibrating element 26-1 (first vibrating element), a vibrating
element 26-2 (second vibrating element), and a mold 163. The vibrating elements 26-1 and 26-2
are covered by a mold 163. Like the vibrating element 16-1 in the first embodiment, the
vibrating elements 26-1 and 26-2 respectively include the piezoelectric element 261-1 and the
electrodes 262-1-1, 262-1-2, and the piezoelectric element 261-2. And electrodes 262-2-1, 2622-2. The piezoelectric element 261-1 and the piezoelectric element 261-2 are arranged side by
side in the vertical direction, but are separated by a mold 163. The material of the mold 163 is
the same as the material of the mold 163 in the first embodiment.
[0045]
The electrodes 262-1-1 and 262-1-2 are respectively mounted on the front and back surfaces of
the right end of the piezoelectric element 261-1. The electrodes 262-1-1 and 262-1-2 supply the
potential difference of the input electric signal input from the audio output unit 213 to the front
and back surfaces of the piezoelectric element 261-1. Thereby, the piezoelectric element 262-1
generates a vibration.
[0046]
The electrodes 262-2-1 and 262-2-2 are respectively mounted on the front and back surfaces of
the right end of the piezoelectric element 261-2. The electrodes 262-2-1 and 262-2-2 supply the
potential difference of the input electric signal input from the switching unit 112 to the front and
back surfaces of the piezoelectric element 261-2. Thereby, the piezoelectric element 262-2
generates a vibration. The electrodes 262-2-1 and 262-2-2 output the potential difference
generated by the vibration of the piezoelectric element 261-2 to the switching unit 112 as an
output electric signal.
[0047]
Here, when the switching signal input to the switching unit 112 indicates that the input electrical
signal from the audio output unit 113 is output to the vibrating element 26-2, both of the
vibrating elements 26-1 and 26-2 vibrate. The vibration is generated to vibrate the vibration
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panel 18. At this time, since the vibration generated by the vibration element 26-1 and the
vibration generated by the vibration element 26-2 are synchronized with each other, the
vibrations of both are superimposed, and as a result, the vibration is emphasized. On the other
hand, when the switching signal input to the switching unit 112 indicates that the output
electrical signal from the vibration element 26-2 is input to the pressure correction unit 114, the
vibration element 26-2 is added to the vibration element 26-2. An output electrical signal based
on the pressing force is output to the switching unit 112. The pressure correction unit 114
calculates the magnitude of strain (pressure force) applied to the vibrating element 16-2 from the
output electrical signal input from the switching unit 112, and the position where the vibration
panel 18 from the position detection unit 19 is touched. The correction is performed based on
the position information representing H, and the correction is output to the press input unit 115.
[0048]
As described above, in the present embodiment, the vibration device 26 transmits the vibration
obtained by converting the input electric signal to the vibration panel 18, and the strain
(pressure force) transmitted from the vibration panel 18 as the output. The vibration element 262 converts the electric signal. Thus, voice reproduction and operation input can be realized
simultaneously. The switching unit 112 switches whether to receive an input electrical signal
from the vibrating element 26-2 or output an output electrical signal to the vibrating element 262 based on the switching signal. Thereby, the user can use properly the audio reproduction by
both of the vibration elements 26-1 and 26-2 and the combined use of the audio reproduction
and the distortion (pressure) input. When reproducing at a large volume, it is possible to increase
the volume because the vibration of the vibration panel 18 is emphasized by switching the
switching section 112 as in the former case. On the other hand, when it is desired to reproduce
at low volume, the switching unit 112 is switched as in the latter case, so that only the vibration
element 26-1 (a vibration element of half the size) is driven for sound reproduction to reproduce
efficiently. Power consumption can be reduced.
[0049]
Third Embodiment Next, a third embodiment of the present invention will be described. The
present embodiment detects the position information representing the position in contact with
the vibration panel 18, and detects the magnitude of the strain (pressure force) applied to the
vibration device 16 that can be detected from the output electric signal of the vibration device
16. The correction is performed based on the position information, and distortion (pressure
force) information of a portion in contact with the vibration panel 18 is calculated.
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[0050]
The terminal device 3 according to the present embodiment has the same appearance as the
terminal device 1 shown in FIGS. 1 and 2. The internal configuration of the terminal device 3 is
also the same as the internal configuration of the terminal device 1 shown in FIG.
[0051]
The pressure correction unit 114 calculates the magnitude of strain (pressure force) applied to
the vibrating device 16 from the output electrical signal input from the switching unit 112, and
the position at which the vibration panel 18 from the position detection unit 19 receives an
operation input. The correction is performed based on the position information representing H,
and the correction is output to the press input unit 115. The pressure input unit 115 outputs, to
the terminal state control unit 123, distortion (pressure force) at a position where the vibration
panel 18 obtained from the pressure correction unit 114 receives an operation input.
[0052]
Next, correction processing of the pressure value performed by the pressure correction unit 114
will be described. FIG. 15 is a flowchart showing a correction process of the pressure value
performed by the pressure correction unit 114 according to the present embodiment. (Step
S201) The pressure correction unit 114 calculates the magnitude of strain (pressure force)
applied to the vibrating device 16 from the electric signal input from the switching unit 112.
Thereafter, the process proceeds to step S202. (Step S 202) Position information is input to the
pressure detection unit 114 from the position detection unit 19. Thereafter, the process proceeds
to step S203. (Step S203) The pressure detection unit 114 calculates the distance between the
position represented by the position information input from the position detection unit 19 and
the position of the vibrating device 16. In order to calculate the distance, the pressure correction
unit 114 stores in advance a distance value for the position information value indicated by the
position detection unit 19 from the position indicating the center position of the vibrating device
16. Thereafter, the process proceeds to step S204.
[0053]
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18
(Step S204) The pressure correction unit 114 determines the correction amount L (r) based on
the calculated distance r. For example, the correction amount L (r) is calculated as a × r <2>.
Here, a is a preset real number. This makes it possible to correct the amplitude attenuation that is
inversely proportional to the square of the distance r. As another example, the pressure
correction unit 114 may read the correction amount L (x, y) corresponding to the position
information (x, y) input from the position detection unit from the storage unit included in the
own unit. . The storage unit stores in advance correction amounts L (x, y) actually measured in
the terminal device for each of the position information (x, y) input from the position detection
unit 19. An example of the pressure correction information representing the correspondence
between the position information (x, y) and the correction amount L (x, y) will be described later.
Thereafter, the process proceeds to step S205.
[0054]
(Step S205) The pressure correction unit 114 calculates the corrected pressure value by
multiplying the magnitude of the strain (pressure force) applied to the vibration device 16 from
the electric signal input from the switching unit 112, using the determined correction amount L. .
Thereafter, the process ends. Thereby, even if the distance from the vibration device 16 becomes
long, the magnitude of distortion (pressure) at the position where the vibration panel 18 is
touched can be known. Therefore, the terminal device 1 can acquire the clue which controls an
operation mode not only by the presence or absence of operation but by the magnitude | size of
a press.
[0055]
Next, an example of the pressure correction information will be described. FIG. 16 is a diagram
illustrating an example of the relationship between coordinates (x, y) at which the vibration panel
18 receives an operation input and a distance r from the position to the center of the vibration
device 16. Moreover, FIG. 17 and FIG. 18 are figures which show the example of the press
correction information memorize | stored in the memory | storage part, respectively. In FIG. 17,
the left column represents the distance r, and the right column represents the correction amount
L. For example, in the case of coordinate 1, the correction amount L is 400 for the distance r =
200, and in the case of coordinate 2, the correction amount L is 1600 for the distance r = 40. In
FIG. 18, the left column represents position information (x, y), and the right column represents
the correction amount L. For example, in the case of the coordinate 1, the correction amount L is
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19
400 for the position information (x1, y1), and in the case of the coordinate 2, the correction
amount L is 1600 for the position information (x2, y2).
[0056]
As described above, in the present embodiment, the pressing information that has made contact
with the vibration panel 18 is calculated based on the output electrical signal and the position
information. Thereby, the difference by the position which the user operated can be excluded and
the press value produced by operation can be acquired correctly.
[0057]
In the above description, the terminal device 1, 2 or 3 is an input / output device having a
communication function, and the case of reproducing received speech has been described as an
example, but the present embodiment is not limited to this. In the present embodiment, the
terminal device 1, 2 or 3 may be an electronic device having an audio reproduction function and
an operation input function.
[0058]
In the input / output device having the communication function described above, the terminal
state control unit 123 determines whether the terminal device 1, 2 or 3 performs voice
reproduction or operation input based on the information from the communication control unit
121. Switching the switching signal indicating that the switching unit 112 outputs the output
electrical signal from the sound output unit 113 to the vibrating device 16 or the switching
signal indicating that the input electrical signal from the vibrating device 16 is input to the
pressing correction unit 114 The example which the control part 122 produces | generates was
demonstrated. In the electronic device having the audio reproduction function and the operation
input function of the above-described embodiment, the terminal state control unit 123
determines whether the terminal device 1, 2 or 3 performs the audio reproduction, and performs
the audio reproduction. The switching control unit 122 may generate a switching signal
indicating that the switching unit 112 outputs the output electrical signal from the audio output
unit 113 to the vibrating device 16 when it determines. In that case, the switching unit 112 may
control whether the movable segment C falls to A or B depending on whether or not the input
switching signal indicates audio reproduction.
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[0059]
FIG. 19 is a block diagram showing the configuration of the terminal device 4 according to one
embodiment. The terminal device 4 according to this embodiment further includes an audio
reproduction unit 31, an audio data storage unit 32, and an audio reproduction control unit 125.
The voice data storage unit 32 is a portion for storing voice data incorporated in advance in the
terminal device 4, voice data collected through a wireless communication means, an external
storage medium, a microphone attached to the terminal, or the like. When the terminal state
control unit 123 instructs reproduction of various audio data in response to the user's operation
input, the instruction is transmitted to the audio reproduction unit 31 via the audio reproduction
control unit 125. The audio reproduction unit 31 reads out the instructed audio data from the
audio data stored in the audio data storage unit 32. The sound reproduction unit 31 outputs the
read sound data to the sound output unit 113 to reproduce sound.
[0060]
Also, although the terminal device 4 shown in FIG. 19 is configured to vibrate the vibration
device 16 and the vibration panel 18 using audio data as an output electric signal, the frequency
of the output electric signal is a frequency at which human perceives vibration (for example, 520 Hz). Therefore, in the above configuration, for example, by storing data of a vibration pattern
including the frequency band in the voice data storage unit 22 instead of the voice data, the user
is notified of that by the vibration of the vibration panel 18 Things are possible. This vibration
pattern is used, for example, for an incoming vibrator of a mobile phone or force feedback for
informing the user that an operation has been received at the time of operation of the touch pad
/ touch panel. As a result, the input / output unit 11 according to the present embodiment can
selectively use the vibration notification or the press detection with one vibration device 16, and
can make the terminal device 4 smaller and lighter. Further, since the input / output unit 11
according to the present embodiment has a simple configuration as described above, it can be
easily manufactured.
[0061]
In the terminal device 2 or 3 described above, the input / output unit 21 includes the switching
unit 112 that controls the input / output of the vibration element 26-2 and the pressure
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21
correction unit 114 or the sound output unit 213. The present embodiment is not limited to this.
In the present embodiment, the input / output unit 21 may include the switching unit 112 that
controls input / output between the vibration element 26-1 and the pressure correction unit 114
or the sound output unit 213.
[0062]
Although the case where the vibrating device 26 includes the two vibrating elements 26-1 and
26-2 has been described above as an example, the present embodiment is not limited thereto. In
the present embodiment, the vibration device 26 may include three or more vibration elements.
Among the plurality of vibration elements, at least one or more vibration elements may include a
switching unit 112 that controls input / output with the pressure correction unit 114 or the
sound output unit 213.
[0063]
The input / output unit 21 described above may subtract an interference component from the
output electrical signal input from the switching unit 112 to generate an input removal signal,
and the pressure correction unit 114 may be configured to receive the generated input removal
signal. . The wraparound component is a component that contributes to the output electric signal
generated by the vibration element 26-2 from the vibration generated based on the input electric
signal and transmitted to the vibration panel 18. The input / output unit 21 may further include,
for example, a second switching unit 512, a wraparound combining unit 513, and a subtraction
unit 514, as shown in the terminal device 5 of FIG.
[0064]
Similar to the switching unit 112, the second switching unit 512 receives a switching signal from
the switching control unit 122, and receives an input electrical signal from the audio output unit
213. However, when the input switching signal indicates that the output electrical signal from
the audio output unit 213 is to be output to the vibrating element 26-2, the second switching
unit 512 wraps the input electrical signal to the combining unit 513. Output. When the input
switching signal indicates that the input electrical signal from the vibration element 26-2 is input
to the pressing output unit 114, the second switching unit 512 cuts off the input electrical signal.
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[0065]
The wraparound combining unit 513 combines the wraparound component signals based on the
input electrical signal input from the second switching unit 512. Here, for example, a
wraparound characteristic coefficient is calculated in advance based on a wraparound
component obtained as an output electrical signal in a state where no operation input is made,
and the input electrical signal. The calculated wraparound characteristic coefficient is set in the
wraparound combining unit 513. The turnaround combining unit 513 generates a turnaround
component signal by filtering the input electrical signal that has been input with the set
turnaround characteristic coefficient. The wraparound combining unit 513 outputs the combined
wraparound component signal to the subtracting unit 514. The subtractor unit 514 subtracts the
wraparound component signal input from the wraparound combining unit 513 from the output
electrical signal input from the switching unit 112 to generate a wraparound removal signal. The
subtraction unit outputs the generated wraparound removal signal to the pressure correction
unit 114.
[0066]
In addition, in the present embodiment, the switching unit 112 and the pressure amplification
unit 114 may be provided with a filter for removing the component (for example, 200 Hz to 4.0
kHz) of the voice band. Thereby, in the present embodiment, when sound reproduction and
operation input are performed simultaneously, it is avoided that a component due to vibration
based on the reproduced sound is erroneously acquired as a press.
[0067]
In addition, a part of the terminal device 1, 2, 3, 4 or 5 in the embodiment described above, for
example, the switching unit 112, the decoding unit 15, the pressing correction unit 114, the
position input unit 116, the communication control unit 121, the switching control unit The
terminal state control unit 123, the voice reproduction control unit 125, the second switching
unit 512, the loop combining unit 513, and the subtraction unit 514 may be realized by a
computer. In that case, a program for realizing the control function may be recorded in a
computer readable recording medium, and the computer system may read and execute the
program recorded in the recording medium. Here, the “computer system” is a computer
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system built in the terminal device 1, 2, 3, 4 or 5, and includes an OS and hardware such as
peripheral devices. The term "computer-readable recording medium" refers to a storage medium
such as a flexible disk, a magneto-optical disk, a ROM, a portable medium such as a ROM or a CDROM, or a hard disk built in a computer system. Furthermore, the “computer-readable recording
medium” is one that holds a program dynamically for a short time, like a communication line in
the case of transmitting a program via a network such as the Internet or a communication line
such as a telephone line. In such a case, a volatile memory in a computer system serving as a
server or a client may be included, which holds a program for a predetermined time. The
program may be for realizing a part of the functions described above, or may be realized in
combination with the program already recorded in the computer system. In addition, some or all
of the terminal devices 1, 2, 3, 4 and 5 in the above-described embodiment may be realized as an
integrated circuit such as LSI (Large Scale Integration). Each functional block of the terminal
devices 1, 2, 3, 4 and 5 may be individually processorized, or part or all may be integrated and
processorized. Further, the method of circuit integration is not limited to LSI's, and
implementation using dedicated circuitry or general purpose processors is also possible. In the
case where an integrated circuit technology comes out to replace LSI's as a result of the
advancement of semiconductor technology, integrated circuits based on such technology may
also be used.
[0068]
As mentioned above, although one embodiment of this invention was described in detail with
reference to drawings, a specific structure is not restricted to the above-mentioned thing, Various
design changes etc. in the range which does not deviate from the summary of this invention It is
possible to
[0069]
1, 2, 3, 4, 5, ... terminal device, 10 ... housing, 11, 21 ... input / output unit, 112 ... switching unit,
113, 213 ... voice output unit, 114 ... pressing correction unit, 115 ... pressing input unit 116:
position input unit 117: adhesive 12: control unit 121: communication control unit 122:
switching control unit 123: terminal state control unit 125: audio reproduction control unit 13:
antenna unit 14: communication Unit 15 Decoding unit 16, 26 Vibrating device 16-1, 26-1, 26-2
Vibrating element 161 261-1 261-1 Piezoelectric element 162-1, 162-2, 262-1-1, 262-1-2, 2622-1, 262-2-2 ... electrode, 163 ... mold, 17 ... display unit, 18 ... vibration panel, 19 ... position
detection unit 31 ... audio reproduction unit 32: voice data storage unit 512: second switching
unit 513 ... sneak synthesis unit, 514 ... subtraction unit
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