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JP2005086739

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DESCRIPTION JP2005086739
A portable telephone 10 includes an open / close detection unit 38. The open / close detection
unit 38 detects an open / close state of a lid case and a main body case, and sends an open /
close state signal to a control unit 40. The control unit 40 controls the connection of the switch
circuit 48 according to the open / close state signal, and switches the left and right channels of
the stereo signal output from the speakers 18 and 20. In the closed state, L0 and L1, R0 and R1
are connected, the left channel and the right channel are given to the speakers 18 and 20,
respectively, and in the open state, L0 and L2, and R0 and R2 are connected, the speaker 18 And
20 are provided with right and left channels respectively. [Effect] You can listen to the correct
stereo sound according to the state of opening and closing. [Selected figure] Figure 2
Mobile phone
[0001]
The present invention relates to a mobile phone, and more particularly to a mobile phone in
which upper and lower two cases are openably connected and a stereo audio signal can be
reproduced by two stereo speakers.
[0002]
In recent years, also in a mobile phone, audio data distributed via the Internet etc. may be
received, the audio data may be stored in a memory built in the mobile phone main body, a
removable memory card, etc., and an audio signal may be reproduced. It is possible.
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When the audio signal is a stereo signal, stereo sound can be listened to by providing a plurality
of speakers.
[0003]
In the mobile phone disclosed in Patent Document 1, two speakers are disposed in the vicinity of
the diagonal of the display of the mobile phone, and the orientation of the display with respect to
the user is determined from the detection result by the sensor that detects inclination. By
switching the channel output from the speaker, stereo sound is correctly reproduced regardless
of the orientation of the display unit. Japanese Patent Application Laid-Open No. 2003-78601
[H04M1 / 21, 1/00, 1/02, 1/725, H04R5 / 02]
[0004]
In the mobile phone of Patent Document 1, stereo audio can be well listened to in either vertical
or horizontal direction on the display screen, but only stereo reproduction is intended when the
upper case and the lower case are opened, and the upper and lower cases are displayed. There is
no awareness at all about voice output in the closed state.
[0005]
On the other hand, as described above, the use of the cellular phone as an audio player has
already been performed, and in this case, the upper and lower cases are used with the case
closed.
Therefore, it is desirable to reproduce stereo sound in the correct channel even when the upper
and lower cases are closed, but in the prior art of Patent Document 1, when the upper and lower
cases are closed, the channels are reversed, so stereo reproduction is performed correctly.
Absent.
[0006]
Therefore, the main object of the present invention is to provide a portable telephone capable of
correctly reproducing stereo sound regardless of the open / close state.
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[0007]
According to the invention of claim 1, the main body case and the lid case are connected
openably and closably, the left and right speakers are provided in the lid case, and channel
switching for switching channels of stereo audio signals to be output to the two speakers In the
mobile phone provided with the means, there is provided an open / close detection means for
detecting the opening / closing of the main body case and the lid case, and the channel switching
means is controlled according to the signal from the open / close detection means. It is a
telephone.
[0008]
According to the invention of claim 1, the open / close state is detected by the open / close
detection means consisting of, for example, a pressure sensitive switch provided on the main
body case and a pressure pin provided on the lid case side. The channel switching means
switches the left and right channels of the stereo signal output to the two speakers provided in
the lid case.
That is, although the arrangement of the speaker for the user is reversed in the closed state and
the open state of the mobile phone, the user can perform stereo in any use state by inverting the
left and right stereo audio signals output to the speaker. It becomes possible to listen.
[0009]
The invention according to claim 2 is the portable telephone according to claim 1, further
comprising means for turning on / off the display according to a signal provided from the cover
case and the open / close detection means.
[0010]
In the invention of claim 2, when the open state of the two cases of the mobile telephone is
detected by the open / close detection means, the power supply of the display is turned on.
Conversely, when the two cases of the portable telephone are closed, the power supply of the
display is turned off in response to the closed state signal from the open / close detection means.
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[0011]
The invention according to claim 3 further comprises a display provided in the lid case and
operation means for reversing the direction of the image displayed by the display, and the
channel switching means is provided in accordance with the operation of the operation means. It
is a mobile telephone according to claim 1, which is controlled.
[0012]
According to the invention of claim 3, when it is desired to show the image on the display to the
other person who faces the user, if the display is directed to the other person as it is, the image is
reversed with respect to the other person.
Therefore, the user can provide the image and sound in the correct direction for the other person
by inverting the upper and lower sides of the image by operating the operation means and
switching the channel accordingly.
[0013]
According to the present invention, since the stereo audio channel is switched according to the
opening and closing of the lid case, stereo audio can be correctly reproduced in either the open
state or the closed state.
[0014]
The above object, other objects, features and advantages of the present invention will become
more apparent from the following detailed description of the embodiments with reference to the
drawings.
[0015]
The mobile phone 10 of the embodiment shown in FIG. 1 includes a lid case 12 and a main body
case 14. The lid case 12 and the main body case 14 are connected to each other by a hinge
mechanism 16, and can be opened and closed. There is.
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An antenna 26 is provided in a protruding manner in the lid case 12.
[0016]
The lid case 12 is a rectangular first display consisting of a liquid crystal display panel for
displaying information on the inner surface (front portion) when the two cases shown in FIG. 1A
are closed. 22 (referred to as a main display), a power button 32 for turning on / off the power of
the mobile phone on the inner surface of the main body case 14 or a call button 34 for starting a
call state And an operation key unit 36 having a plurality of operation buttons including a ten
key and a function key.
The side surface of the main body case 14 is provided with a side button (operation means) 15
which can be operated regardless of the open / close state of the mobile phone 10.
[0017]
Further, a convex pressing pin 28 is provided on the front surface of the lid case 12 and the front
surface of the main body case 14 is pressed by the pressing pin 28 when the lid case 2 is closed.
A pressure switch 30 is provided.
The pressure pin 28 and the pressure sensitive switch 30 form a part of the open / close
detection means, but other means may be used for open / close detection.
[0018]
When the two cases shown in FIG. 1A are in the closed state, the two speakers 18 and 20 are
arranged side by side on the surface (back surface) which is the outer side, and a liquid crystal
display for displaying information. A rectangular second display 24 (hereinafter referred to as a
sub-display) formed of a panel is provided.
[0019]
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The open / close detection unit 38 shown in FIG. 2 detects the open / close state of the two cases
12 and 14 by the operation of the pressure sensitive switch 30, and sends the open / close state
signal to the control circuit 40.
The control circuit 40 determines the open / close state of the mobile phone 10 based on the
open / close state signal, and controls the switching of the switch circuit 48 to provide the
speaker 18 and the speaker 20 with stereo signals of appropriate channels corresponding to the
open / close state. Makes it possible to output
[0020]
The switching of the left and right stereo signals by the opening / closing operation at the time of
an incoming call and the switching operation of the display will be described below with
reference to the flowchart of FIG.
[0021]
When the incoming call is possible with the power of the mobile phone 10 turned on, the
incoming call is determined in step S1, and if YES, the process proceeds to step S3.
Since the mobile phone 10 is provided with the antenna 26 on the lid case 12 side, at this time,
as shown in FIG. 1 (a), the user turns the antenna 26 upward and displays the telephone number,
name, etc. Look at the sub-display 24 in progress. Therefore, the speaker 18 is located on the left
side for the user, and the speaker 20 is located on the right side.
[0022]
At this time, L0 is connected to L1 and R0 to R1 in the switch circuit 48, so that the left channel
of the stereo signal is reproduced from the speaker 18 and the right channel is reproduced from
the speaker 20. You are listening to the correct stereo sound.
[0023]
In step S5, the user performs the opening operation of the two closed cases in order to start a
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call, and detects that the pressure sensitive switch 30, that is, the open / close detection unit 38
has been opened, and the main display in step S7. 22 is displayed and the display of the sub
display 24 is switched.
At this time, the user uses the lid case 12 at the top and the body case 14 at the bottom to see
the main display 22 as shown in FIG. 1C. Since the antenna 26 is protruded on the lid case 12
side, the position of the speaker is inevitably reversed, the speaker 18 is located on the right side
with respect to the user, and the speaker 20 is located on the left side.
[0024]
Therefore, when the control unit 40 controls the switch circuit 48 to connect L0 and L2 and R0
and R2 in step S9, the left and right channels of the stereo signal are inverted. Therefore, since
the right channel of the stereo signal is reproduced from the speaker 18 and the left channel is
reproduced from the speaker 20, the user can listen to the correct stereo sound.
[0025]
In step S11, it is determined whether or not to make a call. If YES, the process proceeds to step
S13, where a specific call process is performed, and in step S15, the call process is performed
until an end call operation is performed.
[0026]
After the call ending operation of step S15 is performed, the user proceeds to step S17 and
performs the closing operation.
When the pressure pin 28 presses the pressure sensitive switch 30 by this closing operation, the
open / close detection unit 38 detects the closed state, and in step S19, the display of the main
display 22 is turned off and the display of the sub display 24 is switched. .
[0027]
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Since the two cases are closed, in step S21, the left and right channels of the stereo signals
output from the speakers 18 and 20 are inverted again. As a result, the left channel from the
speaker 18 and the right channel from the speaker 20 are reproduced, and when the next
incoming call is received, the user can reproduce the correct sound.
[0028]
Next, the switching of the direction of the image by an arbitrary operation and the switching
operation of the left and right stereo signals will be described using the flowchart of FIG.
[0029]
First, with the two cases opened, the user uses the operation keys 36 to display a menu screen on
the main display 22.
In step S31, the user selects a song already stored on the menu screen, and if YES, the process
proceeds to step S33, an image is displayed on the main display 22, and music is reproduced
from the speakers 18 and 20. At this time, the speaker 18 outputs the right channel of the stereo
signal to be located on the right side with respect to the user, and the speaker 20 outputs the left
channel of the stereo signal because it is located on the left side.
[0030]
In step S35, it is selected whether to reverse the direction of the image on the main display 22 or
not. For this selection, as shown in FIG. 5, for example, with respect to the other person who
faces the user, while the user holds the mobile phone 10, the main display 22 is tilted toward the
other person, and the displayed image is displayed. Do it if you want to show.
[0031]
If the change of the upper and lower sides of a screen is YES at Step S35, it will progress to Step
S37 and will reverse the upper and lower sides of the screen of main display 22. When the
screen is upside down and the image for the other person is correct, the result is as shown in FIG.
5B, the speaker 18 is located on the left side with respect to the other person, and the speaker 20
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is located on the right side. In step S39, the left and right channels of the stereo signal output
from each speaker are inverted.
[0032]
Since it is possible to close the two cases and watch the image of the sub display 24 while
inverting the image of the main display 22 in this manner, the user operates to close the two
cases in step S41. In step S43, the open / close detection unit 38 detects that the two cases are
closed, and turns off the display on the main display 22 and turns on the display on the sub
display 24. At this time, the direction of the image of the sub display 24 is displayed in an
inverted state as the image of the main display 22 is inverted.
[0033]
On the other hand, when it is not necessary to change the upper and lower sides of the screen
when only the user views the image in step S35, when closing two cases and wanting to view the
image of the sub display 24, the two cases are selected in step S45. To close the In step S47, it is
detected that the open / close detection unit 38 is in the closed state, the display of the main
display 22 is turned off, and an image is displayed on the sub display 24.
[0034]
At step S49, since the two cases are closed, the left and right channels of the stereo signal output
from the speaker are reversed, and when the user looks at the display on the sub display 24 from
the correct direction, the speaker 18 and the user The correct channel is played from twenty.
[0035]
Next, in step S51, in a state in which the two cases of the video on the sub display 24 are closed,
it is determined whether it is desired to invert the video.
In the state in which the two cases are closed, the user operates the side button 15 provided on
the side of the main body case 14 to operate the upside down inversion of the image. If this
operation is YES, the process proceeds to step S53, and the image on the sub display 24 is
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flipped upside down. Along with this inversion, in step S55, the left and right channels output
from the speakers 18 and 20 are switched.
[0036]
And the state where the upside down of the image was last performed is kept until the end of the
music, and the correct channels from the speakers 18 and 20 are maintained regardless of the
screen and direction in which the main display 22 and the sub display 24 are used. Be
regenerated.
[0037]
As described above, according to the present invention, the user can perform a special input
operation by detecting the open / close state of the two cases and switching the left and right
channels of the stereo audio output to the speaker 18 and the speaker 20. It is possible to hear
the best stereo sound without.
[0038]
In the embodiment, when making the other person who faces the user look at the image, the left
and right channels outputted from the speaker are inverted by inverting the upper and lower
sides of the screen by the user's arbitrary operation. And allow others to listen to the best stereo
sound.
[0039]
The embodiments described above can be modified.
For example, in order to detect the open / close state of the two cases, a detection means is used
by the pressing pin 28 provided on the lid case 12 and the pressure state of the pressure
sensitive switch 30 provided on the main body case 14. An open / close detection mechanism
actuated by a torsion spring built in a hinge portion 16 (FIG. 1) connecting the lid case 12 and
the main body case 14 may be used. A magnet is used for the lid case 12 and the main body case
14 It is also possible to use a combination of the magnetic sensor and the MR (magnetic
resistance) element.
[0040]
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Further, an image in the case of music reproduction is a moving image, and different images may
be reproduced on the main display 22 and the sub display 24.
[0041]
In addition, when viewing the sub display, the sub display may be turned on by an arbitrary
operation in an open state so that an image can be viewed.
[0042]
It is the schematic which shows the Example of this invention, (a) is a rear view of a closed state,
(b) is a side view of a closed state, (c) is a front view of an open state.
1 is a block diagram showing a schematic configuration of the embodiment of FIG.
It is a flowchart which shows the operation | movement at the time of the incoming call in an
Example.
It is a flowchart which shows the operation | movement at the time of the arbitrary operation in
an Example.
It is an illustration figure which shows switching of the direction of the image by the arbitrary
operation in an Example.
Explanation of sign
[0043]
DESCRIPTION OF SYMBOLS 10 ... Mobile telephone 12 ... Lid case 14 ... Body case 15 ... Side
button 16 ... Hinge part 18 ... Speaker 20 ... Speaker 22 ... 1st display machine (main display) 24
... 2nd display machine (subdisplay) 26 ... Antenna 28: Pressure pin 30: Pressure-sensitive switch
32: Power button 34: Call button 36: Operation key unit 38: Open / close detection unit 40:
Control unit 48: Switch circuit
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