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JP2005136457

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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
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2005136457
PROBLEM TO BE SOLVED: To provide a portable telephone in which a user can easily view a
television broadcast which naturally outputs a voice according to a display mode of an image
when a television broadcast wave is received and reproduced. I assume. SOLUTION: In a mobile
phone, a receiving unit for receiving a television broadcast signal, a display unit, two speakers
arranged on both sides of the display unit, and the two speakers are positioned on the left and
right of a display image. And audio output means for reproducing received audio in monaural
with the two speakers when the received audio is stereo reproduced with the two speakers and
the two speakers are positioned above and below the display image. [Selected figure] Figure 3
Mobile phone, reproduction method and program
[0001]
The present invention relates to a mobile phone that receives and reproduces a television
broadcast wave, and more particularly to a technology for switching an audio mode.
[0002]
In recent years, with the progress of multi-functionalized mobile phones, for example, mobile
phones having a function of receiving and playing back digital television broadcast waves have
been developed.
[0003]
Most of the shapes of screens such as liquid crystal displays included in mobile phones are
vertically long and most of the images transmitted by digital television broadcast waves have a
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horizontally long shape, so some models of mobile phones rotate the images by 90 degrees And a
mode for effectively using the display area of the liquid crystal display (see Non-Patent Document
1).
[0004]
On the other hand, with regard to audio, most digital television broadcasts are stereo-broadcast,
and in order to reproduce stereo audio properly, it is necessary to provide two speakers in a
cellular phone.
[0005]
In order to obtain a stereo effect, in consideration of disposing two speakers at an appropriate
distance and using one of the speakers as a speaker for a call that is usually disposed outside the
upper end of the longitudinal screen, the cellular phone is vertically elongated. It is considered to
arrange one speaker at each of both ends outside in the longitudinal direction of the screen.
Nikkei Electronics August 18, 2003 Nikkei BP P. 90-95
[0006]
However, when receiving the television broadcast, the mobile phone may want to display the
image on the screen without rotating it by 90 degrees as described above. In such a case, when
the received voice is simply output as stereo voice, Unnatural sound output is made for the user
such that the right sound of stereo sound can be heard from above the image and the left sound
can be heard from below the image.
[0007]
In view of the above problems, according to the present invention, when receiving and playing
back a television broadcast, a natural voice output is made to the user according to the display
mode of the image, and it is easy to view the television broadcast. Intended to provide.
[0008]
In order to solve the above-mentioned problems, the present invention is a mobile phone,
comprising: receiving means for receiving a television broadcast signal; a display unit for
displaying an image in the television broadcast signal; and both sides of the display unit When
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two speakers and the two speakers are positioned to the left and right of the video, audio in the
television broadcast signal is reproduced in stereo by the two speakers, and the two speakers are
positioned above and below the video. And an audio output unit that reproduces the audio in
monaural using the two speakers.
[0009]
(1) The mobile phone according to the present invention has the above-described configuration,
so that when the speakers are positioned to the left and right of the displayed image when
viewed from the user, the voice is output in stereo. Since the stereo effect can be enjoyed, and the
speaker is positioned in at least one of the speakers when the speaker is positioned in the vertical
direction or the like other than the left and right of the image to be displayed, the stereo audio is
viewed from the top of the image. It is possible to hear the voice without feeling the difficulty of
listening and the unnaturalness of listening to the left voice related to the stereo voice from the
lower side.
[0010]
(2) A reproduction method according to the present invention is a reproduction method for
reproducing a television program in a mobile phone in which two speakers are disposed on both
sides of a display unit, and the receiving step of receiving a television broadcast signal; A display
step of displaying a video in a television broadcast signal, and when the two speakers are
positioned to the left and right of the video, audio in the television broadcast signal is reproduced
in stereo by the two speakers, and the two speakers are And an audio output step of reproducing
the audio in monaural using the two speakers when positioned above and below the video.
[0011]
According to this configuration, when the speakers are positioned to the left and right of the
displayed image as viewed from the user, the audio is output in stereo, so that the user can enjoy
the stereo effect of the audio and display When the speaker is positioned in the vertical direction
which is a direction other than the left and right of the image, the audio is output monaurally to
at least one of the speakers. You can listen to the voice without feeling the unnaturalness of
listening to the left voice or the difficulty of listening.
[0012]
(3) The program of the present invention is a program applied to a portable telephone in which
two speakers are disposed on both sides of a display unit, and the receiving step of receiving a
television broadcast signal, and the display unit A display step of displaying the video, and when
the two speakers are positioned to the left and right of the video, audio in the television
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broadcast signal is reproduced in stereo by the two speakers, and the two speakers are arranged
above and below the video. If it is located, the computer is made to execute each step of an audio
output step of reproducing the audio in monaural with the two speakers.
[0013]
According to this configuration, when the speakers are positioned to the left and right of the
displayed image as viewed from the user, the audio is output in stereo, so that the user can enjoy
the stereo effect of the audio and display When the speaker is positioned in the vertical direction
which is a direction other than the left and right of the image, the audio is output monaurally to
at least one of the speakers. You can listen to the voice without feeling the unnaturalness of
listening to the left voice or the difficulty of listening.
[0014]
The best mode of the present invention will be described with reference to the drawings.
<1.
Outline> FIG. 1 is a view showing an outline of a mobile telephone 1 according to the present
invention.
[0015]
The mobile telephone 1 has a television function of receiving a television broadcast wave in
addition to a telephone function of making a call as a telephone.
[0016]
The housing of the mobile phone 1 includes a first housing 10 having a display unit 12 and a
second housing 11 electrically connected to the first housing 10.
[0017]
The mobile phone 1 has a slide open / close structure, and a closed state in which the first case
10 and the second case 11 shown in FIG. The first case 10 shown in FIG. 2 takes two states of an
open state in which the first case 10 is translated on the second case 11.
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[0018]
The slide portion 22 which is a part of the first housing 10 shown in FIG. 1A is provided with a
protruding rail, and the protruding rail is engaged with the groove 21 provided in the second
housing 11, Slide along the groove 21.
[0019]
A detection switch 23 is provided at one end of the groove 21, and the projecting rail presses the
detection switch 23 when the cellular phone 1 is in the closed state.
[0020]
It is assumed that the cellular telephone device 1 is in the open state when the detection switch
23 is not pressed.
[0021]
The user of the portable telephone 1 can perform various operations with keys etc. necessary for
the operation of the telephone function when using the telephone function or simply viewing
television broadcasting, and the open state is easy to hold. To use the mobile phone 1.
[0022]
Here, the simple viewing means watching a television broadcast for a relatively short time, for
example, checking a score in a pro baseball broadcast, watching a few minutes of news, zapping
to check a program currently being broadcasted Point to viewing etc.
[0023]
In addition, the user uses the mobile phone 1 in the closed state when watching the television for
a long time, such as watching a professional baseball broadcast until the game ends, or watching
a television drama.
[0024]
FIG. 2 is a view showing a state in which the mobile telephone 1 displays the received television
broadcast on the display unit 12.
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[0025]
FIG. 2A shows that the cellular phone 1 in the closed state receives a television broadcast and
displays a television picture on the display unit 12.
[0026]
FIG. 2B shows that the mobile phone 1 in the open state receives a television broadcast and
displays a television image on the display unit 12.
[0027]
The display unit 12 displays the information to be displayed as a vertically long screen in the
open state, and displays the information to be displayed as a horizontally long screen in the
closed state.
[0028]
The video broadcasted on a television from the broadcasting station is a video having an aspect
ratio of horizontal length, and the mobile phone 1 controls to display the video on the entire
display unit 12 as shown in FIG. 2A.
[0029]
In the case where the horizontal video is displayed by the cellular phone 1 in the open state, as
shown in FIG. 2B, the video is rotated by 90 degrees from the state in which the display 12
displays the video in FIG. Then, the image is reduced and displayed on the display unit 12, and
the display area of the screen can not be effectively used without displaying the video on the
entire screen.
[0030]
When the user does not use the mobile phone 1, the user keeps the mobile phone 1 in the closed
state.
[0031]
The first housing 10 includes a display unit 12, an antenna 13, a left speaker 14, a right speaker
15, an earphone jack 18, and a television key 20.
[0032]
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The display unit 12 is a liquid crystal display or the like that displays the television broadcast
being received, information necessary for making a call by the telephone function, and the like.
[0033]
The antenna 13 is an antenna for receiving a television broadcast wave, and the antenna for
transmitting and receiving a radio for making a call by the telephone function is assumed to be
built in a housing.
[0034]
The left speaker 14 is a speaker for outputting left sound of stereo sound and monaural sound.
[0035]
The right speaker 15 is a speaker for outputting the right audio of stereo audio.
[0036]
The television key 20 is a collection of keys necessary for the user of the mobile phone 1 to view
a television. A television function on / off key for switching on / off of television broadcast
reception, and a reception channel are selected. Channel up / down keys to adjust the volume of
the television, etc.
[0037]
The second housing 11 includes a microphone 16 and a telephone key 17.
[0038]
The microphone 16 picks up the voice emitted by the user at the time of a call.
[0039]
The telephone key 17 includes a ten key for inputting a telephone number of a call destination,
and an on hook key, an off hook key and other keys necessary for making a call, and the ten key
is used when the television function is turned on. It is also used as a key for viewing a television,
such as entering a channel number when receiving a television broadcast.
[0040]
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The earphone jack 18 can be connected to the earphone jack 18 as shown in FIG. 1 (b).
[0041]
The earphone jack 18 detects when the earphone is connected and when the connected
earphone is disconnected, and the shape of the connection terminal of the earphone whether the
connected earphone is for stereo or monaural Identify by etc.
<2.
Configuration> FIG. 3 is a block diagram showing an internal configuration of the mobile phone
1.
[0042]
The display unit 12 performs video display based on the red output signal, the green output
signal, and the blue output signal, which are input from the signal processing unit 26, and the
horizontal and vertical synchronization signals.
[0043]
The communication unit 22 performs wireless communication for a call with a base station (not
shown) relating to a mobile phone via the antenna 21.
[0044]
The communication unit 22 transmits, to the signal processing unit 26, an audio signal that is a
result of demodulating the received signal.
[0045]
The television broadcast reception unit 23 is a terrestrial digital broadcast tuner, and includes a
tuner, demodulation, error correction, descrambling, multiplexed signal separation, a decoding
unit, a DA converter, and the like.
[0046]
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The television broadcast reception unit 23 receives a broadcast wave transmitted by a broadcast
station (not shown) via the antenna 13 and outputs image frame information and an audio signal
decoded from the received broadcast wave to the signal processing unit 26. .
[0047]
The telephone key information acquisition unit 24 detects that the user has pressed the
telephone key 17, and acquires telephone key information corresponding to the pressed key.
[0048]
When the user is talking, the signal processing unit 26 performs an amplification process on the
audio signal received from the communication unit 22 and outputs the amplified signal to the left
speaker 14.
[0049]
The signal processing unit 26 also amplifies the input voice collected by the microphone 16 and
transmits the amplified input voice to the base station via the communication unit 22 and the
antenna 21.
[0050]
When the user views a television broadcast, the signal processing unit 26 causes the display unit
12 to display the video signal received from the television broadcast receiving unit 23.
[0051]
The signal processing unit 26 outputs the left audio signal and the right audio signal using the
left speaker 14 and the right speaker 15 according to an output control instruction from the
control unit 25 or the left audio signal, The right audio signal is synthesized into monaural audio,
which is output to the left speaker 14.
[0052]
The signal processing unit 26 includes a video random access memory (VRAM) and a work RAM.
[0053]
The signal processing unit 26 acquires image frame information from the television broadcast
receiving unit 23.
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[0054]
The image frame information is, for example, a single image encoded like a bit map.
[0055]
The signal processing unit 26 writes the acquired image frame information into the VRAM.
[0056]
However, when the signal processing unit 26 receives an instruction to rotate the image by 90
degrees from the control unit 25, the image obtained by rotating the image indicated by the
received image frame information by 90 degrees is used by using the work RAM. The generated
image frame information is developed in the VRAM.
[0057]
The signal processing unit 26 outputs the red output signal, the green output signal, the blue
output signal, and the synchronization signal, which correspond to the information in the VRAM,
to the display unit 12.
[0058]
The open / close switching detection unit 27 determines that the mobile phone 1 is in the closed
state when the detection switch 23 is pressed, and determines that the mobile phone 1 is in the
open state when the detection switch 23 is not pressed. When the television function of the
mobile phone 1 is turned on, when the mobile phone 1 is changed from the closed state to the
open state, and when it is changed from the open state to the closed state, The open / close
information indicating whether the mobile phone 1 is in the closed state or the open state is
transmitted.
[0059]
Further, even when the power of the mobile telephone 1 is turned on, the open / close switching
detection unit 27 detects whether the mobile telephone 1 is in the open state or the closed state,
and uses the detection result as the open / close information. Output for 25
[0060]
When the earphone is connected to the earphone jack 18 and when the connected earphone is
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10
pulled out, the earphone detection unit 28 determines whether the earphone is connected or not,
and when connected, the earphone is for stereo audio. It is determined whether it is for analog
voice or for analog voice, and earphone information indicating either no earphone, stereo or
analog is output to the control unit 25 based on the determination result.
[0061]
Further, even when the power of the mobile phone 1 is turned on, the earphone detection unit
28 determines the connection / non-connection of the earphones and the type of the connected
earphone as described above, and uses the determination result as earphone information. Send to
[0062]
The television key information acquisition unit 29 detects depression of the television key 20 by
the user and acquires television key information corresponding to the depressed key.
[0063]
The earphone output unit 30 outputs the audio signal output from the signal processing unit 26
to the earphone connected to the earphone jack 18.
[0064]
The control unit 25 performs voice mode determination processing from the open / close
information acquired from the open / close switching detection unit 27 and the earphone
information acquired from the earphone detection unit 28, and outputs the determination result
to the signal processing unit 26 as output control information. Do.
[0065]
The voice mode determination process will be described later.
[0066]
Based on the received television key information, the control unit 25 issues a tuning instruction
to the television broadcast receiving unit 23, a gain adjustment instruction of audio output to the
signal processing unit 26, an output instruction of a video related to television broadcasting, and
the like.
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[0067]
The control unit 25 instructs the communication unit 22 to perform wireless communication in
order to operate the telephone function according to the received key information.
[0068]
When the main power supply of the mobile phone 1 is turned on, the control unit 25 acquires
earphone information and open / close information as initial values.
<3.
Operation> The control unit 25 performs the audio mode determination process (a) when the
television function is changed from off to on, (b) when the connection and removal of the
earphone are detected, (c) the open / close state of the mobile phone 1 In three cases where is
changed.
[0069]
FIG. 4 is a flowchart showing the contents of the voice mode determination process.
[0070]
The control unit 25 determines whether the earphone information indicates stereo or monaural
(S401).
[0071]
When the earphone information indicates that the earphone is not present (S401: NO), the
control unit 25 proceeds to S402.
[0072]
When the earphone information indicates stereo or monaural (S401: YES), the control unit 25
transmits, to the signal processing unit 26, an output control instruction indicating a speaker
mute to stop the audio output to the left speaker 14 and the right speaker 15. (S405) If the
earphone information indicates stereo (S406: YES), an output control instruction indicating
earphone stereo output is transmitted to the signal processing unit 26 (S407).
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[0073]
When the earphone information indicates monaural (S406: NO), an output control instruction
indicating earphone monaural output is transmitted to the signal processing unit 26 (S408).
[0074]
When the open / close information indicates the open state (S402: YES), the control unit 25
outputs an output control instruction indicating the left speaker monaural output to the signal
processing unit 26 (S404).
[0075]
If the open / close state indicates the closed state (S402: NO), an output control instruction
indicating both speaker stereo output is output to the signal processing unit 26 (S403).
[0076]
Note that, when the telephone function is turned on, the control unit 25 determines whether the
earphone information indicates that there is no earphone.
When the earphone information indicates that there is no earphone, output control information
indicating the left speaker output is transmitted to the signal processing unit 26, and when the
earphone information indicates monaural and stereo, the output control instruction indicating
the earphone monaural output is signal processed. Send to section 26.
[0077]
The signal processing unit 26 outputs voice according to the output control instruction received
from the control unit 25.
<4.
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Modified Example> Although the present invention has been described based on the above
embodiment, it is needless to say that the present invention is not limited to the above
embodiment.
The following cases are also included in the present invention.
[0078]
Although the present invention has been described using the example of the slide-type mobile
phone that opens and closes in a sliding manner, the correspondence between the position of the
speaker and the upper and lower parts of the image is changed by rotating the image by a
predetermined angle. For example, the application of the present invention is possible.
[0079]
FIG. 5 is a schematic view of a mobile phone having a rotary structure.
[0080]
For example, as in the mobile phone shown in FIGS. 5A and 5B, the first housing 101 may have a
rotary structure that rotates 90 degrees with respect to the second housing 102.
[0081]
In the mobile phone shown in FIG. 5, the state shown in FIG. 5A where the first housing 101 is
rotated corresponds to the closed state, and the left speaker 104 and the right speaker 105
output stereo sound. .
[0082]
The state shown in FIG. 5B corresponds to the open state, and after converting stereo sound into
monaural sound, the monaural signal is output from at least one of the left speaker 104 and the
right speaker 105.
[0083]
In addition, a horizontal and vertical gyro sensor detects the posture of the mobile phone, and
when viewed from the user, detects when the two speakers are located on the left and right of
the display unit and when the two speakers are located above and below the display unit. It may
be
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[0084]
It is a figure showing an outline of a mobile telephone 1 concerning the present invention.
FIG. 6 is a diagram showing a state in which the mobile phone 1 receives a television broadcast
and displays it on the display unit 12;
FIG. 2 is a block diagram showing an internal configuration of the mobile telephone 1;
It is a flowchart which shows the content of audio | voice mode determination processing.
FIG. 1 is a schematic view of a mobile phone having a rotatable structure.
Explanation of sign
[0085]
DESCRIPTION OF SYMBOLS 1 mobile telephone 10 1st housing | casing 11 2nd housing | casing
12 display part 14 left speaker 15 right speaker 17 telephone key 20 TV key 21 groove 23
detection switch
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