JP2005252539

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DESCRIPTION JP2005252539
PROBLEM TO BE SOLVED: To provide a portable terminal capable of transitioning to a state in
which a display panel is folded outward and requiring screen display and stereo audio output
without requiring an operation of switching the terminal. A first case 2 having a display panel 5
and provided with three speakers A1 to A3 for stereo audio output, a second case 3 having an
operation panel 6, and a first case 2 A first terminal state in which the first case 2 and the second
case 3 are expanded, and the display panel 5. The connection portion 4 connects the case 2 and
the second case 3 in a foldable manner. Is a mobile phone 1 capable of transitioning to a second
terminal state folded outwards, the state detection control unit 28 detecting which terminal state
the terminal is in, and based on the detection result of the terminal state A speaker drive control
unit 24 drives the speakers A1 to A3. [Selected figure] Figure 5
Mobile terminal
[0001]
The present invention relates to a portable terminal, and more particularly to an improvement of
a portable terminal such as a foldable portable telephone provided with three speakers for stereo
audio output.
[0002]
In recent years, mobile phones that receive TV (television) broadcasts and display images have
been commercialized and become a hot topic.
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In such a mobile phone, if audio output can be performed in stereo in accordance with image
display such as a TV program, it is convenient because the user can enjoy stereo sound as well as
video. Examples of conventional portable terminals capable of stereo audio output include those
described in Patent Documents 1 and 2. The portable terminals described in these documents
perform control to switch the left and right channels of stereo sound to the orientation of the
screen display and a plurality of speakers depending on whether the display screen is in the
portrait state or the landscape state. There is. JP 2003-78601 A JP JP 2003-244786 A
[0003]
In the case of the conventional portable terminal as described above, in the case of a portable
terminal capable of folding the display panel outward, the display panel is folded outward from
the state in which the operation panel and the display panel are expanded toward the front.
When transitioning to a state of viewer (referred to as a viewer style state), the screen display
becomes upside down (inverted state), and there is a problem that stereo sound is not output
correctly. That is, since the orientations of the display panels differ from each other by 180 °,
the expanded state and the viewer style state can not be determined by identifying whether the
display screen is in the vertically long state or in the horizontally long state. Therefore, it is
inconvenient because it is not possible to correctly switch the screen display direction or to
switch the left and right channels for each speaker, and to change the portable terminal each
time the transition is made from the expanded state to the viewer style state.
[0004]
The present invention has been made in view of the above circumstances, and is a portable
terminal capable of transitioning to a state in which the display panel is folded outward, which
does not require an operation for changing the portable terminal, screen display and stereo
audio. An object of the present invention is to provide a portable terminal capable of
appropriately performing output. In particular, it is an object of the present invention to provide
a portable terminal capable of correctly switching left and right channels to each speaker even
when transitioning from the expanded state to the viewer style state.
[0005]
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Another object of the present invention is to provide a portable terminal capable of appropriately
performing screen display and stereo audio output, and improving operability at the time of call
reception. In particular, it is an object of the present invention to provide a portable terminal
capable of making a call while holding an incoming call in a viewer style state without an
increase in the number of speakers.
[0006]
A portable terminal according to the present invention has a display panel, and a first case
provided with three speakers for stereo audio output, a second case having an operation panel,
and the first case and A connecting portion that foldably connects the second housing, a first
terminal state in which the first housing and the second housing are expanded, and a first folding
state in which the display panel is directed outward A portable terminal capable of transitioning
to the two terminal states, a state detection unit that detects which of the above-described
terminal states the mobile terminal is in, and a speaker that drives each of the speakers based on
the detection result of the terminal state And driving means.
[0007]
According to such a configuration, each speaker is driven based on the detection result as to
which of the first and second terminal states the portable terminal is in, so stereo audio output is
performed for each terminal state. It can be done properly.
In particular, even when the display panel is shifted outward from the unfolded state, the right
and left channels can be switched correctly for each speaker, so that the operation for changing
the portable terminal is unnecessary and the convenience is improved. be able to.
[0008]
In the portable terminal according to the present invention, in addition to the above
configuration, the second housing has a microphone for transmission provided at an end
opposite to the connecting portion, and each of the speakers is a first housing. The body is
disposed at the end opposite to the connecting portion and at the end on the connecting portion
side with respect to the end across the display panel, and both are used as a speaker for
receiving voice.
[0009]
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According to such a configuration, since each speaker is also used for reception, the speaker
disposed at the end opposite to the connection portion can be used for reception in the first
terminal state, and the connection portion A speaker located at the end of the side can be used
for listening in the second terminal state.
In other words, even in the unfolded state and in the terminal state in which the display panel is
folded outward, reception can be performed using the speaker far from the microphone, so
operability at the time of an incoming call is improved. It can be done. In particular, even when
there is an incoming call in the second terminal state, a call can be made while holding the
terminal state. In addition, it is possible to output stereo sound and make a call according to the
terminal state without increasing the number of speakers.
[0010]
Further, in addition to the above configuration, the portable terminal according to the present
invention is configured to include display direction control means for switching the orientation of
screen display on the display panel based on the detection result of the terminal state. According
to such a configuration, since the orientation of the screen display can be switched based on the
detection result as to which of the first and second terminal states the mobile terminal is in, it is
necessary to carry out an operation to switch the portable terminal. Instead, screen display can
be appropriately performed for each terminal state.
[0011]
According to the mobile terminal of the present invention, screen display and stereo audio output
can be appropriately performed for each terminal state. In particular, even when the display
panel is shifted outward from the unfolded state, the right and left channels can be switched
correctly for each speaker, so that the operation for changing the portable terminal is
unnecessary and the convenience is improved. be able to.
[0012]
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In addition, even in the unfolded state and in any of the terminal states in the state where the
display panel is folded outward, reception can be performed using the speaker far from the
microphone, so screen display according to the terminal state , Stereo audio output and calls can
be made properly. In particular, even if there is an incoming call in the second terminal state
without an increase in the number of speakers, it is possible to make a call while holding the
terminal state, thereby improving operability at the time of incoming call. be able to.
[0013]
Embodiment 1 FIGS. 1A and 1B are plan views showing an example of a schematic configuration
of a portable terminal according to a first embodiment of the present invention, in which a
foldable portable telephone 1 is shown. FIG. 1A shows the operation surface side in the unfolded
state, and FIG. 1B shows the back surface side. The portable telephone 1 according to the present
embodiment is a portable small electronic device, and outputs stereo sound in accordance with
image display such as a TV program in the unfolded state and the state where the display screen
is folded outward. I have control.
[0014]
The mobile phone 1 includes a case (first case) 2 provided with a display panel 5, a case (second
case) 3 provided with an operation panel 6, and the case 2 and the like. 3 and a connecting
portion 4 for connecting foldably.
[0015]
The display panel 5 is formed of a rectangular display screen, and for example, a vertically long
liquid crystal display is used.
Here, with the longitudinal direction of the display screen as the longitudinal direction of the
display panel 5 and the housing 2 and the housing 3 expanded and the display panel 5 and the
operation panel 6 both facing forward, the vertical direction of the operation panel 6 and It shall
match. Further, a direction perpendicular to the vertical direction (vertical direction) is taken as
the left-right direction of the display panel 5 and the operation panel 6. The housing 2 is
provided with three speakers A1 to A3 for stereo sound output. Each of the speakers A1 to A3 is
disposed at an end portion of the housing 2 opposite to the connecting portion 4 and at an end
portion on the connecting portion 4 side with the display panel 5 interposed therebetween.
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[0016]
Here, one speaker is disposed at the end opposite to the connecting portion 4, and this speaker is
referred to as a first speaker A1. Further, two other speakers are disposed on the left and right
sides at the end of the connecting portion 4, and among these, the left speaker is the second
speaker A2 and the right speaker is the third speaker A3 toward the display panel 5. I assume.
[0017]
A magnet 9 for detecting a terminal state is embedded at an end of the housing 2 opposite to the
connecting portion 4. The magnet 9 is disposed on the left side of the first speaker A1 toward the
display panel 5.
[0018]
The operation panel 6 includes a plurality of keys for executing various functions based on the
operation input by the user. For example, a key for switching the direction of screen display, a
numeric keypad used for number input at the time of transmission and character input at the
time of mail transmission, a transmission key (off hook key), an end key (on hook key), and a
direction key are provided. .
[0019]
The housing 3 is provided with two Hall elements 10 and 11 for terminal state detection, a
microphone 12 for transmission, and an antenna 13 for wireless communication. The Hall
elements 10 and 11 and the microphone 12 are disposed at the end opposite to the connecting
portion 4. The Hall elements 10 and 11 are magnetic sensors utilizing the Hall effect, and current
flows (is turned on) based on the change of the magnetic field.
[0020]
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Here, the Hall elements 10 and 11 are disposed to the left and right toward the operation panel
6, and among them, the Hall element on the left side of the microphone 12 is the first Hall
element 10, and the Hall element on the right side is the second Hall element 11. I assume. Each
Hall element 10 and 11 is embedded in the housing 3. The antenna 13 is provided on the side
surface of the housing 3 on the side of the connection portion 4.
[0021]
The connecting portion 4 rotatably connects the housing 2 around two rotation shafts 7 and 8
orthogonal to the housing 3. That is, the housings 2 and 3 are connected by the rotating shaft 7
which allows the display panel 5 to rotate toward the operation panel 6 and the rotating shaft 8
parallel to the longitudinal direction of the display panel 5. By using such a connecting portion 4,
the state in which the display panel 5 is folded inward (the stored state), the state in which the
casings 2 and 3 are expanded (the first terminal state), and the display panel 5 Can be
transitioned to the outside (the second terminal state).
[0022]
2 (a), (b), FIG. 3, FIG. 4 (a) and (b) are external perspective views showing an example of state
transition in the mobile phone of FIG. FIG. 2 (a) shows a storage state in which the housings 2
and 3 are folded with the display panel 5 and the operation panel 6 facing inwards, and FIG. 2 (b)
shows the display panel 5 and the operation panel 6 , And the first terminal state in which the
housings 2 and 3 are expanded in the same direction.
[0023]
The stored state is suitable for being carried because it can prevent an erroneous operation and
can protect the display panel 5. In the stored state, control for turning off the liquid crystal
display and the speakers A1 to A3 is performed. Such a storage state is detected when the first
Hall element 10 is turned on. That is, when the magnet 9 approaches the first Hall element 10
during storage, the magnetic field in the first Hall element 10 changes. The first Hall element 10
is turned on based on the change of the magnetic field, and it is detected that the first Hall
element 10 is in the stored state.
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[0024]
The first terminal state is suitable for the operation input since the display panel 5 and the
operation panel 6 face in the same direction. That is, the user can view the screen display on the
display panel 5 while operating the keys on the operation panel 6.
[0025]
In the first terminal state, output of stereo sound is performed using the speakers A2 and A3 or
the speakers A1 and A3. The transition from the storage state to the first terminal state is
detected by the first Hall element 10 changing from the on state to the off state. That is, when
the magnet 9 is moved away from the first Hall element 10 at the time of expansion, the
magnetic field in the first Hall element 10 changes. Based on the change of the magnetic field, it
is detected that the first Hall element 10 is in the off state and is in the expanded state.
[0026]
FIG. 3 shows that the housing 2 is rotated around the rotation axis 8 parallel to the housing 3 in
the longitudinal direction of the display panel 5. The housing 2 can be rotated 180 degrees or
more around the rotation axis 8 with respect to the housing 3. That is, by rotating the housing 2,
the front and back of the housing 2 can be reversed with respect to the housing 3.
[0027]
FIG. 4A shows a state in which the front and back of the housing 2 are reversed with respect to
the housing 3, and FIG. 4B shows that the back surface of the housing 2 is opposed to the
operation panel 6 and folded. , And a second terminal state in which the display panel 5 faces
outward.
[0028]
In the second terminal state, output of stereo sound is performed using the speakers A2 and A3
or the speakers A1 and A3.
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Such a first terminal state is detected by turning on the second Hall element 11. That is, when the
magnet 9 approaches the second Hall element 11 at the time of folding, the magnetic field in the
second Hall element 11 changes. Based on the change of the magnetic field, the second Hall
element 11 is turned on, and it is detected that the second terminal state is reached. By using the
Hall elements 10 and 11, the terminal state can be detected in a non-contact manner, so that the
durability is superior to that in the contact manner.
[0029]
In place of the Hall elements 10 and 11, an MR (Magneto Resistive) element may be used to
detect the terminal state. The MR element is a magnetic sensor that utilizes the magnetoresistive
effect, and can detect the terminal state in a non-contact manner as in the case of the Hall
elements 10 and 11.
[0030]
FIG. 5 is a block diagram showing an exemplary configuration in the mobile phone of FIG. The
mobile phone 1 includes an antenna 13, speakers A1 to A3, a microphone 12, hall elements 10
and 11, a wireless unit 21, a communication control unit 22, a main control unit 23, a speaker
drive control unit 24, a transmission control unit 25, a display The control unit 26 includes an
operation input unit 27 and a state detection control unit 28.
[0031]
The wireless unit 21 performs transmission and reception processing of communication data
exchanged with the base station via the antenna 13. The wireless unit 21 can receive a TV
broadcast including stereo sound data. The communication control unit 22 controls various
communications. For example, reception control of TV broadcasting, transmission / reception
control for downloading an application program on a website from a web server, call control at
call origination, call control, call reception control at call arrival, transmission / reception control
of electronic mail are performed. .
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[0032]
The operation input unit 27 performs input processing based on key operations on the operation
panel 6. The transmission control unit 25 performs input control of an audio signal input from
the microphone 12 at the time of a call.
[0033]
The state detection control unit 28 is a state detection unit that detects which terminal state the
mobile phone 1 is in. That is, based on the on / off of Hall elements 10 and 11, it is determined
whether the housings 2 and 3 are in the stored state, in the first terminal state, or in the second
terminal state. Be done. As a result, since the terminal state is automatically detected, it is
possible to automatically switch between stereo audio output and image display.
[0034]
The display control unit 26 performs control to switch the screen display direction on the display
panel 5. The switching of the direction in the screen display is performed based on the detection
result of the terminal state by the state detection control unit 28 and the operation input by the
user. For example, direction switching control (display direction control) is performed such that
the direction of screen display is the same in the first terminal state and the second terminal
state toward the operation panel 6. That is, in either the unfolded state or the state where the
display panel 5 is folded outward, the screen display is automatically switched so as to be in the
upright state. Usually, the user holds the case 3 having the operation panel 6 and performs
terminal operation. Therefore, by making the screen display orientation on the operation panel 6
the same in each terminal state, the user can view the display screen without changing the
terminal when the terminal state is changed. it can.
[0035]
Further, in the first terminal state or the second terminal state, control (display direction
switching) is performed to switch the screen display orientation to a predetermined orientation
based on the operation input. Here, it is assumed that switching to rotate the screen display by
90 ° is performed by the user's operation input. Thereby, the user can switch the screen display
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to a desired direction as needed. That is, it is possible to freely switch between the direction in
which the screen display is erected in the vertical direction of the display panel 5 and the
direction in which the screen display is erected in the direction (horizontal direction)
perpendicular to the vertical direction.
[0036]
The speaker drive control unit 24 controls to drive the speakers A1 to A3 at the time of stereo
sound output. The driving of the speakers A1 to A3 is performed based on the detection result of
the terminal state by the state detection control unit 28 and the direction of the screen display,
and the left and right channels in the stereo sound are switched.
[0037]
For example, control of switching the left and right channels in the first terminal state and the
second terminal state and driving the speakers A1 to A3 is performed. This switching control is
performed so that the left and right of the stereo sound are the same in each terminal state
toward the operation panel 6. That is, in both the unfolded state and the state in which the
display panel 5 is folded outward, switching is performed so that the right and left sides of the
operation panel 6 are correct. Thereby, the user can appropriately view the display screen and
the stereo sound without switching the terminal when changing the terminal state.
[0038]
Further, in the first terminal state or the second terminal state, control is performed to switch the
left and right channels according to the direction of the screen display switched by the user's
operation input to drive the speakers A1 to A3. That is, when switching is performed to rotate the
direction of the screen display by 90 ° in the unfolded state or the state where the display panel
5 is folded outward, according to the switching of the direction, the direction of the screen
display is The left and right channels are switched so that the left and right are correct. Thereby,
the user can switch the screen display to a desired direction as needed, and can obtain stereo
audio output according to the direction of the screen display.
[0039]
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6 (a) and 6 (b) are diagrams showing an example of the operation state of the mobile phone of
FIG. 1, and FIG. 6 (a) shows that the screen display in the expanded state is positive in the vertical
direction of the display panel 5. A state of stereo sound output in the standing state is shown,
and a state of stereo sound output in the case where the screen display is erected in the lateral
direction of the display panel 5 is shown in FIG. 6 (b).
[0040]
In the unfolded state, when the screen display is vertically oriented, that is, in the longitudinal
direction of the display screen on the display panel 5, the screen display orientation is the same
as the direction of the operation panel 6, Even if there is an advantage, there is an advantage that
it is easy to perform operation input.
In this case, output of stereo sound is performed using the second speaker A2 and the third
speaker A3. That is, control is performed in which the second speaker A2 on the left side of the
display screen is assigned to the left channel, and the third speaker A3 on the right side is
assigned to the right channel. Thereby, the user can enjoy the stereo sound together with the
video at the time of TV broadcast reception and the like.
[0041]
On the other hand, in the unfolded state, when the screen display is erected in the horizontal
direction, that is, in the direction perpendicular to the longitudinal direction of the display screen,
the screen display is performed in the case of a horizontally long image such as a TV program
video. It can be done effectively.
[0042]
Assuming that the user holds the terminal with the right hand, the screen display may be erected
rightward toward the display screen.
In this case, output of stereo sound is performed using the first speaker A1 and the third speaker
A3. That is, in a state where the screen display is erected, control is performed in which the first
speaker A1 on the left side is allocated to the left channel and the third speaker A3 on the right
side is allocated to the right channel. Thereby, the user can appropriately view the stereo sound
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together with the video at the time of TV broadcast reception or the like. In the expanded state,
the direction of the screen display can be freely switched by the user's key operation, and the
speakers A1 to A3 to be driven are automatically switched according to the direction of the
screen display.
[0043]
Here, when the screen display is in the vertical direction at the time of stereo audio output, that
is, when the screen display is erected in the vertical direction of the display panel 5, control is
performed to turn off the drive for the first speaker A1. When the screen display is in the
horizontal direction, control is performed to turn off the drive for either the second speaker A2
or the third speaker A3. Thus, power consumption can be reduced.
[0044]
Further, when the screen display on the display panel 5 is turned to the right during stereo audio
output, that is, when the screen display is erected to the right toward the display screen, the third
speaker A3 is allocated to the right channel. The speakers to be allocated to the right channel can
be made common in the case where the screen display is in the vertical direction. Thereby,
control of speaker allocation can be simplified.
[0045]
FIGS. 7A and 7B are diagrams showing an example of the operation state of the mobile phone
shown in FIG. 1. In FIG. 7A, the screen display in the second terminal state is in the vertical
direction. FIG. 6 (b) shows the state of stereo audio output when the screen display is in the
horizontal direction.
[0046]
In the second terminal state, that is, in the state where the display panel 5 is folded outward
(viewer style state), if the screen display is erected in the vertical direction and displayed, the
direction of the screen display is Since the direction is the same as that of the orientation, even
when the transition is made from the expanded state to the viewer style state, browsing of the
screen can be continued without changing hands.
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In this case, output of stereo sound is performed using the second speaker A2 and the third
speaker A3. That is, in a state where the screen display is erected, control is performed to assign
the third speaker A3 on the left side toward the left and to assign the second speaker A2 on the
right to the right channel. Thereby, the user can enjoy the stereo sound together with the video
at the time of TV broadcast reception and the like.
[0047]
On the other hand, if the screen display is erected in the horizontal direction, that is, in the
direction perpendicular to the longitudinal direction of the display screen on the display panel 5
in the viewer style state, In this case, screen display can be performed effectively.
[0048]
Also here, assuming that the user holds the terminal with the right hand, there may be a case
where the screen display is erected rightward toward the display screen in the viewer style state.
In this case, output of stereo sound is performed using the first speaker A1 and the third speaker
A3. That is, control is performed to assign the third speaker A3 on the left side to the left channel
and assign the first speaker A1 on the right side to the right channel while the screen display is
erected. Thereby, the user can appropriately view the stereo sound together with the video at the
time of TV broadcast reception or the like.
[0049]
In addition, in the viewer style state, when the screen display is in the vertical direction at the
time of stereo audio output, control for turning off the drive to the first speaker A1 is performed.
When the screen display is in the horizontal direction, control is performed to turn off the drive
for either the second speaker A2 or the third speaker A3. Thus, power consumption can be
reduced.
[0050]
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In addition, when the direction of screen display turns to the right toward the display screen at
the time of stereo audio output, by allocating the third speaker A3 to the left channel, it is
allocated to the left channel in the case where the screen display becomes vertical The speakers
can be shared. Thereby, control of speaker allocation can be simplified.
[0051]
FIG. 8 is a diagram showing another example of the operating state of the mobile phone of FIG. 1,
and shows the state of stereo audio output when the screen display is in the horizontal direction
in the expanded state. Assuming that the user holds the terminal with the left hand, in the
unfolded state, the screen display may be erected to the left toward the display screen. In this
case, output of stereo sound is performed using the first speaker A1 and the second speaker A2.
That is, control is performed in which the second speaker A2 on the left side is allocated to the
left channel and the first speaker A1 on the right side is allocated to the right channel in a state
where the screen display is erected. Thereby, the user can appropriately view the stereo sound
together with the video at the time of TV broadcast reception or the like.
[0052]
Steps S101 to S124 in FIG. 9 to FIG. 11 are flowcharts showing an example of the stereo voice
output operation in the mobile phone of FIG. First, the state detection control unit 28 starts
detection of the terminal state when the terminal is expanded from the storage state or an
operation input is performed to switch the orientation of the screen display in the expanded state
(steps S101 and S102).
[0053]
At this time, if the first Hall element 10 is in the on state, it is determined that the terminal is in
the storage state. In addition, when the first Hall element 10 is in the OFF state and the second
Hall element 11 is in the ON state, it is determined that the terminal is in the viewer style state.
When both the first Hall element 10 and the second Hall element 11 are in the off state, it is
determined that the terminal is in the expanded state.
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[0054]
When the terminal is in the storage state, the display control unit 26 performs control to turn off
the driving of the liquid crystal display, and the speaker drive control unit 24 performs control to
turn off the driving of each of the speakers A1 to A3 (steps S103 to S103). S105).
[0055]
On the other hand, when the terminal is in the viewer style state, control is performed depending
on whether the screen display is in the horizontal direction (steps S106 and S107).
If the screen display is in the horizontal direction, the display control unit 26 turns on the driving
of the liquid crystal display and performs control to rotate the direction of the screen display by
90 ° (step S108). At this time, the speaker drive control unit 24 assigns the first speaker A1 to
the right channel, turns off the second speaker A2, and assigns the third speaker A3 to the left
channel (steps S109 to S111). ).
[0056]
If the screen display is not in the horizontal direction, the display control unit 26 performs
control to rotate the screen display on the liquid crystal display by 180 ° (step S112). At this
time, control is performed such that the first speaker A1 is turned off by the speaker drive
control unit 24, the second speaker A2 is allocated to the right channel, and the third speaker A3
is allocated to the left channel (steps S113 to S115). ).
[0057]
If the terminal is in the unfolded state, control is performed according to whether the screen
display is in the horizontal direction (steps S106 and S116). If the screen display is in the
horizontal direction, the display control unit 26 turns on the driving of the liquid crystal display
and performs control to rotate the direction of the screen display by 270 ° (step S117). At this
time, the speaker drive control unit 24 assigns the first speaker A1 to the left channel, turns off
the second speaker A2, and assigns the third speaker A3 to the right channel (steps S118 to
S120). ).
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[0058]
If the screen display is not in the horizontal direction, the display control unit 26 controls the
screen display on the liquid crystal display to be in the upright state (non-rotational state) (step
S121). At this time, control is performed such that the first speaker A1 is turned off by the
speaker drive control unit 24, the second speaker A2 is allocated to the left channel, and the
third speaker A3 is allocated to the right channel (steps S122 to S124). ).
[0059]
According to the present embodiment, since each of the speakers A1 to A3 is driven based on the
detection result as to which of the terminal state: the storage state, the expanded state, and the
viewer style state, the terminals are appropriately selected for each terminal state. Stereo audio
output can be performed automatically. In particular, even when transitioning from the unfolded
state to the viewer-style state, the switching of the left and right channels to the speakers A1 to
A3 can be correctly performed, so that the operation of changing the terminal is unnecessary and
convenience can be improved.
[0060]
In the present embodiment, an example has been described in which the third speaker A3 is
allocated to the right channel as the direction of screen display turns to the right in the expanded
state, but the present invention is limited to this. Instead, the second speaker A2 may be divided
into the right channel and shaken.
[0061]
FIG. 12 is a diagram showing another example of the operation state of the mobile phone shown
in FIG. 1, showing the state of stereo audio output when the screen display direction is right.
In the unfolded state, when the screen display is displayed erecting rightward toward the display
screen and displayed, control is performed to assign the first speaker A1 to the left channel and
assign the second speaker A2 to the right channel. Such a configuration also allows the user to
properly view the stereo sound as well as the video at the time of video reproduction such as TV
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broadcasting.
[0062]
Further, in the present embodiment, an example in which the direction of screen display is
switched by a user's operation input has been described, but the present invention is not limited
to this. For example, the speakers A1 to A3 may be driven based on the direction of screen
display switched by the control program. That is, a program execution unit is provided which
executes a control program for switching the direction of screen display on the display panel 5 to
generate an image, and the speaker drive control unit 24 controls the left and right channels
according to the direction of the image switched Allocate
[0063]
For example, even when the direction of screen display is switched by an application program
(content) downloaded from a website, switching of the left and right channels is automatically
performed, so stereo audio output according to the video is performed. Can.
[0064]
In the present embodiment, the example of the portable terminal capable of folding the case 2
with the display panel 5 facing the operation panel 6 with respect to the case 3 has been
described, but the present invention is not limited to this. Absent.
For example, by rotating the housing 2 around a rotation axis perpendicular to the operation
panel 6, the present invention can also be applied to a portable terminal in which the expanded
state and the viewer style state can be transited to each other.
[0065]
Second Embodiment FIG. 13 is a perspective view showing an example of a schematic
configuration of a portable terminal according to Embodiment 2 of the present invention, and
shows a portable telephone 30 capable of answering an incoming call in the second terminal
state. The mobile phone 30 according to the present embodiment, as compared with the mobile
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phone 1 (first embodiment) of FIG. 1, performs off-hook processing while holding the terminal
state when there is an incoming call in the second terminal state. Differs in that a side key 31 is
provided to execute the program.
[0066]
In the mobile phone 30, the speakers A1 to A3 are also used as speakers for receiving voice. That
is, the speaker drive control unit 24 performs drive control of each of the speakers A1 to A3
during a call. In the first terminal state, that is, in the unfolded state, control is performed to drive
the first speaker A1 located farthest from the microphone 12 and to turn off the driving of the
other two speakers A2 and A3. The audio output level at the time of a call is set lower than at the
time of stereo audio output.
[0067]
Further, in the second terminal state, that is, in the viewer style state, either one of the second
speaker A2 or the third speaker A3 at the farthest position from the microphone 12 is driven to
drive the other two speakers. Control to turn off is performed. Here, it is assumed that the third
speaker A3 that is on the left side is driven with the screen display erected. The audio output
level at the time of a call is set lower than at the time of stereo audio output.
[0068]
By making the speaker used at the time of a call only at a position far from the microphone 12,
the operability can be improved and howling can be suppressed.
[0069]
Steps S201 to S216 in FIGS. 14 and 15 are flowcharts showing an example of the speaker driving
operation at the time of an incoming call in the mobile phone of FIG.
First, when an off-hook process is executed based on an operation input of a key on the operation
panel 6 or the side key 31 when there is an incoming call, the state detection control unit 28
starts detection of the terminal state (step S201, S202).
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[0070]
At this time, if the first Hall element 10 is in the on state, it is determined that the terminal is in
the storage state. In addition, when the first Hall element 10 is in the OFF state and the second
Hall element 11 is in the ON state, it is determined that the terminal is in the viewer style state.
When both the first Hall element 10 and the second Hall element 11 are in the off state, it is
determined that the terminal is in the expanded state.
[0071]
When the terminal is in the stored state, the on-hook process is performed, and the speaker drive
control unit 24 performs control to turn off the driving of the speakers A1 to A3 (steps S203 to
S205).
[0072]
On the other hand, when the terminal is in the viewer style state, the display control unit 26
turns on the driving of the liquid crystal display and performs control to rotate the screen display
direction by 180 ° (steps S206 and S207).
At this time, the speaker drive control unit 24 turns off the first speaker A1 and the second
speaker A2, controls the third speaker A3 to be driven at a low output level, and starts the call
process (see FIG. Steps S208 to S211).
[0073]
When the terminal is in the unfolded state, the display control unit 26 turns on the driving of the
liquid crystal display and performs control to set the screen display to the upright state (nonrotational state) (step S212). At this time, the speaker drive control unit 24 drives the first
speaker A1 at a low output level, performs control to turn off the second speaker A2 and the
third speaker A3, and the call processing is started ( Steps S213 to S216).
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[0074]
According to the present embodiment, since each of the speakers A1 to A3 is also used for
reception, the speaker A1 disposed at the end opposite to the connecting portion 4 can be used
for reception in the unfolded state, The speaker A2 or A3 disposed at the end on the connection
portion 4 side can be used for reception in the viewer style state. That is, since it is possible to
receive a call using a speaker far from the microphone 12 in any of the terminal states in the
expanded state and the viewer style state, the operability at the time of an incoming call can be
improved. In particular, even when there is an incoming call in the viewer style state, it is
possible to make a call while maintaining the terminal state. In addition, it is possible to output
stereo sound and make a call according to the terminal state without increasing the number of
speakers.
[0075]
It is the top view which showed an example of schematic structure of the portable terminal by
Embodiment 1 of this invention. It is the external appearance perspective view which showed an
example of the state transition in the mobile telephone of FIG. It is the external appearance
perspective view which showed an example of the state transition in the mobile telephone of FIG.
It is the external appearance perspective view which showed an example of the state transition in
the mobile telephone of FIG. It is the block diagram which showed one structural example in the
mobile telephone of FIG. It is the figure which showed an example of the operation state in the
mobile telephone of FIG. It is the figure which showed an example of the operation state in the
mobile telephone of FIG. It is the figure which showed the other example of the operation state in
the mobile telephone of FIG. It is the flowchart which showed an example of the output operation
of the stereo sound in the mobile telephone of FIG. It is the flowchart which showed an example
of the output operation of the stereo sound in the mobile telephone of FIG. It is the flowchart
which showed an example of the output operation of the stereo sound in the mobile telephone of
FIG. It is the figure which showed the other example of the operation state in the mobile
telephone of FIG. It is the perspective view which showed an example of schematic structure of
the portable terminal by Embodiment 2 of this invention. 14 is a flowchart showing an example
of an operation of driving a speaker at the time of an incoming call in the mobile phone of FIG.
13; 14 is a flowchart showing an example of an operation of driving a speaker at the time of an
incoming call in the mobile phone of FIG. 13;
Explanation of sign
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[0076]
1, 30 mobile phone 2 first case 3 second case 4 connecting part 5 display panel 6 operation
panel 7, 8 rotary shaft 9 magnet 10, 11 hall element 12 microphone 13 antenna 21 radio unit
22 communication control unit 23 Main control unit 24 Speaker drive control unit 25
Transmission control unit 26 Display control unit 27 Operation input unit 28 Condition detection
control unit 31 Side key A1 to A3 Speaker
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