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JP2008301061

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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 JP2008301061
In a portable terminal device capable of audio output from a wireless headphone and a speaker,
an audio output mode can be automatically switched in accordance with a user's operation. In the
device main body portion 1, when reflected light of light emitted by the light emitting element
121a / 122a is received by the first light receiving element 121b / 122b, it is determined that
the operator's hand touches the transmitter 12 If it is not determined that the operator's hand
has touched the transmitter 12, the voice is output from the built-in speaker 9, and if it is
determined that the operator's hand has touched the transmitter 12, the first transmitter 121 or
the second It is determined which of the transmitters 122 the operator's hand has touched, and
based on the determination result, an audio signal is transmitted from the light emitting elements
121a / 122b to the receiver 2. Then, in the receiver 2, the audio based on the audio signal
received by the second light receiving element 211 is output from the headphone 22. [Selected
figure] Figure 1
Mobile terminal equipment
[0001]
The present invention relates to portable terminal devices.
[0002]
2. Description of the Related Art Conventionally, an optical wireless communication apparatus
that transmits audio information by an optical signal from a light emitting element LED is known
(see, for example, Patent Document 1).
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By applying such wireless transmission technology of audio signals to a portable terminal device
that can be carried, it is possible to listen to audio with wireless headphones in the middle of a
train, etc., and it is possible to avoid inconveniences such as the cord of the headphones getting
entangled. . Japanese Utility Model Application Publication No. 6-66148
[0003]
However, in a mobile terminal device capable of audio output from a speaker in addition to audio
output from a wireless headphone, an operation to switch the audio output form is required, so it
takes time for switching operation and operation is complicated. And there was a problem that it
was not easy to use.
[0004]
An object of the present invention is to provide a portable terminal device capable of
automatically switching an audio output form in accordance with a user's operation in a portable
terminal device capable of audio output from a wireless headphone and a speaker. .
[0005]
In order to solve the above-mentioned problems, the invention according to claim 1 wirelessly
receives an audio signal transmitted from the transmitter and an apparatus main body including
a transmitter for transmitting an audio signal and an audio output unit for outputting an audio. A
mobile terminal device comprising: a receiver; and the transmitter comprises a first transmitter
and a second transmitter, and each of the first transmitter and the second transmitter emits light.
The device main body unit determines that the operator's hand has touched the transmitter,
when the reflected light of the light emitted by the light emitting element is received by the light
receiving element. A first voice output control means for causing the voice output unit to output
a voice when it is not determined that the operator's hand has touched the transmitter by the
first determination means; and the first voice output control means; By the judgment means An
audio transmission control means for transmitting an audio signal from the light emitting
element to the receiver when it is determined that the hand of the operator has touched the
transmitter; and the receiver is configured to control the audio transmission. Receiving means for
receiving the audio signal transmitted from the light emitting element by means; and second
audio output control means for outputting from the headphone audio based on the audio signal
received by the receiving means. It is characterized by
[0006]
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2
According to a second aspect of the present invention, in the portable terminal device according
to the first aspect, the device body is formed in a substantially rectangular shape, and a display
panel for displaying an image, and an operation for performing a predetermined operation. Units
are provided side by side along the long side direction, the first transmitter and the second
transmitter are respectively disposed at two corner portions on the operation unit side in the
device main body unit, When it is determined that the operator's hand has touched the
transmitter, the left and right of the portable terminal device may be determined based on which
of the first transmitter and the second transmitter is touched by the operator's hand. And a
display control unit configured to display an image on the display panel in accordance with the
direction determined by the determination unit.
[0007]
The invention according to claim 3 includes an apparatus main body including a transmitter for
transmitting an audio signal and an audio output unit for outputting an audio, and a receiver for
wirelessly receiving an audio signal transmitted from the transmitter. In the mobile terminal
device configured as described above, the transmitter comprises: a first transmitter and a second
transmitter respectively disposed at two corners on the operation unit side of the device body;
And each of the second transmitters comprises a light emitting element and a first light receiving
element, and the device body is formed in a substantially rectangular shape and performs a
predetermined operation with a display panel for displaying an image. The operator's hand
touches the transmitter when the operation part for the light source is arranged side by side in
the long side direction and the reflected light of the light emitted by the light emitting element is
received by the first light receiving element. And the first judging means A first voice output
control means for causing the voice output unit to output a voice when the first determination
means does not determine that the hand of the operator has touched the transmitter; and the
transmission by the first determination means A second determination unit that determines
which of the first transmitter and the second transmitter is touched by the operator when it is
determined that the operator's hand has touched the machine; and the second determination unit
Audio transmission control means for transmitting an audio signal to the receiver from the light
emitting element of the first transmitter or the second transmitter not touched by the operator
based on the determination result by the user; 1 determining means for determining the lateral
direction of the portable terminal device based on the determination result by the second
determining means when it is determined by the 1 determining means that the hand of the
operator has touched the transmitter. Orientation determined by means In addition, a display
control unit that causes an image to be displayed on the display panel, the receiver includes: a
second light receiving element that receives the audio signal transmitted from the light emitting
element by the audio transmission control unit; And second sound output control means for
outputting from the headphone a sound based on the sound signal received by the second light
receiving element.
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[0008]
According to the present invention, in a portable terminal device, a device body including a
transmitter for transmitting an audio signal and an audio output unit for outputting an audio, and
a receiver for wirelessly receiving an audio signal transmitted from the transmitter. The
transmitter comprises a first transmitter and a second transmitter, and each of the first
transmitter and the second transmitter comprises a light emitting element and a light receiving
element, and the light emitting element When the reflected light of the emitted light is received
by the light receiving element, the first determination means determines that the operator's hand
has touched the transmitter, and the first determination means causes the operator's hand to be
transmitted to the transmitter. When it is not determined that the user has touched the sound,
the first audio output control means outputs an audio from the audio output unit, and when the
first determination means determines that the operator's hand has touched the transmitter, the
light emitting element For the receiver, The voice signal is transmitted, and in the receiver, the
voice transmission control means receives the voice signal transmitted from the light emitting
element by the receiving means, and the second voice output control means is based on the voice
signal received by the receiving means Audio is output from the headphones.
That is, in the case of performing audio output from headphones, if the device main body portion
is held and used, audio output is automatically performed from the headphones without
performing an operation for switching the audio output mode.
On the other hand, when outputting audio from the audio output unit (speaker), if the device
body is used without holding it in hand, audio output is automatically performed without
performing an operation for switching the audio output mode. Audio output is performed from
the unit (speaker).
Therefore, in the portable terminal device capable of audio output from the wireless headphones
and the speaker, the audio output form can be automatically switched in accordance with the
user's operation.
[0009]
Hereinafter, embodiments of the present invention will be described with reference to the
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drawings.
In this embodiment, a portable television receiver capable of viewing television broadcasts will be
described as a portable terminal device.
However, the portable terminal device is not limited to this, and may be a portable telephone, a
PDA (Personal Digital Assistants), a portable notebook PC (Personal Computer), or the like.
[0010]
First, the overall configuration of the portable television receiver 100 of the present embodiment
will be described with reference to FIG. For example, as shown in FIG. 1, the portable television
receiver 100 according to the present embodiment includes an apparatus main body 1 formed in
a substantially rectangular shape, and a receiver 22. A display panel 8 for displaying a video
(image) of a television broadcast and an operation unit 10 for the user to operate are provided
side by side in the long side direction of the device main unit 1. Each corner is provided with a
first transmitter (transmitter) 121 and a second transmitter (transmitter) 122, respectively.
Further, the built-in speaker 9 as an audio output unit is built in the device body 1, and the sound
of television broadcast is output from the built-in speaker 9.
[0011]
The front portion of the receiver 2 is a reception unit that receives an audio signal wirelessly
transmitted from the first transmitter 121 or the second transmitter 122 of the device main unit
1 via an IrDA (Infrared Data Association) interface or the like. 2 A light receiving element 211 is
provided. In addition, the receiver 2 is provided with a headphone 22, and a sound based on the
sound signal received by the second light receiving element 211 is output from the headphone
22.
[0012]
As described above, in the portable television receiver 100, there are two audio output forms,
one in which audio is output from the headphone 22 of the receiver 2 and the other in which
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audio is output from the built-in speaker 9 of the device main unit 1. Thus, the television
program can be viewed. In the portable television receiver 100 according to the present
invention, the device body 1 is held by hand when using the headphone 22 for audio output, and
when the audio is output from the built-in speaker 9, the device is used. Use without holding the
main unit 1 in your hand. Then, by providing the device body 1 with a function of detecting that
the user's hand has been touched, the user holds the device body 1 in use or does not use it. It is
possible to automatically switch the audio output mode in accordance with the operation of the
user who uses the television receiver by determining whether or not the audio output mode is
switched according to the determination.
[0013]
Here, FIG. 2 is an example of use of the portable television receiver 100 when using headphones.
When the user performs audio output from the headphone 22, as shown in FIG. 2, the user wears
the headphone 22, and the second light receiving element 211 of the receiver main unit 21
connected by the headphone 22 and the cord unit 23 The device main body unit 1 is held and
used so that the audio signal wirelessly transmitted from the first transmitter 121 or the second
transmitter 122 of the main body unit 1 can be received.
[0014]
Configuration of Device Main Body Next, the main configuration of the device main body 1 of the
portable television receiver 100 will be described with reference to FIG. The device body 1
includes, for example, an antenna 3 for receiving a television broadcast signal, a tuner 4 for
selecting an audio / video signal of a predetermined frequency input from the antenna 3, and a
video signal selected by the tuner 4 , A decoder unit 6 for decoding the video signal demodulated
by the demodulator unit 5, a signal processing unit 7 for performing predetermined video
processing on the video signal and the audio signal, and a display for displaying a video A
transmitter 12 comprising a panel 8, a built-in speaker 9 for outputting audio, an operation unit
10 for the user to operate, an IrDA interface 11, a first transmitter 121, and a second transmitter
122; The control unit 13 integrally controls the entire device body 1 and the like, and the like.
[0015]
The antenna 3 is, for example, built in the device body 1, and receives an audio / video signal
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which is a high frequency (RF) television broadcast signal transmitted from a television broadcast
station (not shown). For example, although not shown, the tuner 4 is configured to include a high
frequency amplification circuit and a frequency conversion circuit including a local oscillation
circuit and a mixing circuit, and the television broadcast signal input by the antenna 3 or the like
is , A specific frequency band according to a control signal from the control unit 13 for selecting
a specific frequency by selecting in the high frequency amplification circuit amplification and
mixing circuit mixing with the local oscillation signal output from the local oscillation circuit The
intermediate frequency signal (IF signal) is received, and the intermediate frequency signal is
subjected to predetermined processing and output to the demodulator 5. The demodulator 5
performs processing such as orthogonal frequency division multiplexing (OFDM) demodulation
and error correction on the intermediate frequency signal output from the tuner 4, for example,
under the control of the controller 13. A port stream (TS) is generated and output to the decoder
unit 6. For example, in the TS decoder (not shown), the decoder unit 6 transmits a video stream,
an audio stream and an PSI / SI (Program Specific Information / PSI) standard under the Moving
Picture Experts Group 2 standard in a TS decoder (not shown). (Service Information) and the like,
and also outputs a video stream to a video decoder (not shown) and an audio stream to an audio
decoder (not shown), and further supplies data contained in PSI / SI to the control unit 13. The
video decoder decodes a video stream input from the TS decoder, performs inverse DCT
conversion, motion compensation control, and the like, generates video data, and outputs the
video data to the signal processing unit 7. The audio decoder also decodes the audio stream input
from the TS decoder, generates audio data, and outputs the audio data to the signal processing
unit 7. The signal processing unit 7 includes a video processing unit (not shown), performs
various video processing such as image quality adjustment on the video data input from the
video decoder, generates a video signal, and outputs the video signal to the display panel 8. The
signal processing unit 7 also includes an audio processing unit (not shown), and outputs audio
data input from the audio decoder to the IrDA interface 11 when executing an audio
transmission control program 134 d described later.
Further, upon execution of a first audio output control program 134b described later, various
processes such as D / A conversion, amplification and the like are performed on the audio data
input from the audio decoder, and output to the built-in speaker 9.
[0016]
The display panel 8 is, for example, a liquid crystal display, an EL (Electro Luminescence) display,
an LED (Light Emitting Diode) display or the like, and displays an image based on the video signal
output from the signal processing unit 7. The built-in speaker 9 outputs voice based on the voice
signal output from the signal processing unit 7.
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[0017]
For example, as shown in FIG. 1, the operation unit 10 is configured to include a plurality of
operation keys SW1 to SW5 arranged symmetrically in the vertical and horizontal directions. The
operation keys are, for example, cross keys SW1 to SW4 for instructing the movement of the
image on display panel 8 in the vertical and horizontal directions, power key SW5 provided at
the center of the cross key, and the like. Based on the pressing operation of the SW 5, an input
operation signal corresponding to the pressed operation key is output to the control unit 13.
[0018]
The IrDA interface 11 performs modulation processing on the audio data output from the signal
processing unit 7, generates an audio signal under the IrDA standard, and outputs the audio
signal to the transmitter 12.
[0019]
The transmitter 12 includes, for example, a first transmitter 121 and a second transmitter 122.
Each of the first transmitter 121 and the second transmitter 122 detects the reflected light of the
light emitted by the light emitting element 121a / 122a emitting light such as infrared light and
the light emitting element 121a / 122a, for example An element (light receiving element) 121b /
122b is provided. An LED or the like is used as the light emitting elements 121a and 122a, and a
photodiode, a phototransistor, CdS or the like is applied to the first light receiving elements 121b
and 122b.
[0020]
The light emitting element 121a and the first light receiving element 121b provided in the first
transmitter 121, and the light emitting element 122a and the first light receiving element 122b
provided in the second transmitter 122 are disposed to face each other, and When the hand is
blocking the upper side of the first transmitter 121 / the second transmitter 122, the light
emitted from the light emitting element 121a / 121b is reflected by the operator's hand, and the
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first light receiving element 121b / 121b / Light is received by 122b. The light received by the
first light receiving element 121b / 122b is converted into an electrical signal by a photoelectric
conversion circuit (not shown), and when light of a predetermined threshold or more is detected,
the photoelectric conversion circuit from the first light receiving element 121b / 122b A
predetermined detection signal is output to the control unit 13 via For example, when light of a
predetermined threshold or more is not detected in the first light receiving element 121 b / 122
b, a signal of “L (Low)” level is output to the control unit 13 and light of a predetermined
threshold or more is detected A detection signal of “H (High)” level is output to the control
unit 13 in FIG. The signal of “H” level or “L” level output from the first light receiving
element 121b / 122b is transmitted from the operator 12 to the transmitter 12 when the first
determination program 134a and the second determination program 134c described later are
executed. It is used for the detection of the touch and the determination of the transmitter 12 of
the one touched by the operator.
[0021]
The control unit 13 is configured to include a central processing unit (CPU) 131, a memory unit
132, a read only memory (ROM) 134, and the like.
[0022]
The CPU 131 executes various programs stored in the ROM 134 in response to input signals
input from the respective units of the device main unit 1 and outputs output signals to the
respective units based on the programs for execution, thereby the device main unit General
control of the operation of part 1 is performed.
[0023]
The memory unit 132 includes, for example, a work area 1321 composed of volatile memory
such as RAM (Random Access Memory), and processing results generated when various
programs are executed by the CPU 131, input data, etc. It is stored in the work area 1321.
[0024]
The memory unit 132 further includes a data area 1322 formed of a non-volatile memory such
as an EPROM (Erasable Programmable ROM).
For example, an operation setting table 1322 a is stored in the data area 1322.
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The operation setting table 1322a includes the operation keys SW1 to SW5 associated with each
mode when the portable television receiver 100 is used in any one of the right hand mode and
the left hand mode described later. Memorize the operation content of.
The operation setting table 1322a will be described in detail in the description of the key
operation setting program 134g described later.
[0025]
The ROM 134 has, for example, a program storage area composed of a non-volatile memory.
Specifically, the first determination program 134a, the first voice output control program 134b,
the second determination program 134c, the voice transmission control program 134d, A
determination program 134e, a display control program 134f, a key operation setting program
134g, and the like are stored.
[0026]
The first determination program 134 a causes the operator's hand to touch the transmitter 12
when, for example, the reflected light of light emitted by the light emitting element 121 a / 121 b
is received by the first light receiving element 121 b / 122 b in the CPU 131 It is a program for
realizing the function of determining that the
Specifically, the CPU 131 monitors a signal output from each of the first transmitter 121 and the
second transmitter 122. Then, a detection signal of “H” level indicating that the hand of the
operator has touched is detected from any one of the first transmitter 121 and the second
transmitter 122 for a predetermined time (for example, three seconds) In this case, the CPU 131
determines that the transmitter 12 has been touched by the operator. That is, when the user
performs viewing without holding the device body 1 in hand, it is determined that the operator's
hand does not touch the transmitter 12. On the other hand, when the user performs viewing
while holding the device body 1 in hand, it is determined that the operator's hand is touching the
transmitter 12. The CPU 131 functions as a first determination unit by executing the first
determination program 134a.
[0027]
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The first voice output control program 134 b realizes a function of causing the CPU 131 to
output voice from the built-in speaker 9 when it is not determined that the operator's hand has
touched the transmitter 12 by execution of the first determination program 134 a, for example.
Is a program to Specifically, when viewing the television program, when the CPU 131 determines
that the operator's hand does not touch the transmitter 12 in the execution of the abovedescribed first determination program 134 a, the CPU 131 performs sound based on the
television broadcast signal. , And output from the built-in speaker 9 built in the device body 1.
The CPU 131 functions as a first audio output control unit by executing the first audio output
control program 134b.
[0028]
For example, when it is determined that the operator's hand has touched the transmitter 12 by
the execution of the first determination program 134 a, the second determination program 134 c
of the first transmitter 121 or the second transmitter 122 This is a program for realizing the
function of determining which one the operator's hand has touched. Specifically, when viewing
the television program, the CPU 131 determines that the operator's hand is touching the
transmitter 12 in the execution of the above-described first determination program 134 a, the
first transmission provided to the transmitter 12 It is determined which of the device 121 and
the second transmitter 122 the operator's hand has touched. The CPU 131 makes the
determination based on which of the first transmitter 121 and the second transmitter 122 the
detection signal output from the transmitter 12 is output. That is, when the detection signal of
"H" level indicating that the hand of the operator has touched is output from the first light
receiving element 121b, it is determined that the hand of the operator has touched the first
transmitter 121, When a detection signal of “H” level indicating that the hand of the operator
has touched is output from the first light receiving element 122 b, it is determined that the hand
of the operator has touched the second transmitter 122. The CPU 131 functions as a second
determination unit by executing the second determination program 134c.
[0029]
The voice transmission control program 134 d is, for example, a light emitting element 121 a of
the first transmitter 121 or the second transmitter 122 not touched by the operator's hand based
on the determination result of the execution of the second determination program 134 c in the
CPU 131. 121 b is a program for realizing a function of transmitting an audio signal to the
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11
receiver 2. Specifically, when the CPU 131 determines which of the first transmitter 121 and the
second transmitter 122 included in the transmitter 12 is touched by the operator in the
execution of the second determination program 134c, the operator A sound signal based on a
television broadcast signal is output as an infrared ray from the light emitting element 121a /
121b provided in the transmitter 121/122 which is not touched by the hand. The CPU 131
functions as an audio transmission control unit by executing the audio transmission control
program 134d.
[0030]
For example, when it is determined that the operator's hand has touched the transmitter 12 by
the execution of the first determination program 134a, the determination program 134e is based
on the determination result by the execution of the second determination program 134c. This is
a program for realizing the function of determining the left and right direction of the portable
television receiver 100. Specifically, when viewing a television program, the CPU 131 determines
that the operator's hand is touching the transmitter 12 in the execution of the first determination
program 134a, and transmits in the execution of the second determination program 134c. If it is
determined which of the first transmitter 121 and the second transmitter 122 included in the
machine 12 has touched the operator's hand, the horizontal direction in which the device body 1
is used is determined . When the detection signal is output from the first transmitter 121, the
CPU 131 determines that the corner of the device body 1 where the first transmitter 121 and the
second transmitter 122 are provided is in the right direction. The portable television receiver
100 sets the right hand mode as being used by the right hand. On the other hand, when the
detection signal is output from the second transmitter 122, the CPU 131 determines that the
corner portion side where the first transmitter 121 and the second transmitter 122 are provided
in the device body 1 is in the left direction. The portable television receiver 100 sets the left hand
mode as being used by the left hand. The CPU 131 functions as a determination unit by
executing the determination program 134e.
[0031]
The display control program 134 f is a program for realizing, for example, the function of
causing the display panel 8 to display an image in accordance with the direction determined by
the execution of the determination program 134 e. Specifically, in the execution of the second
determination program 134c, the CPU 131 determines the direction in which the portable
television receiver 100 is being used, and when either the right hand mode or the left hand mode
is set, An image based on the television broadcast signal is displayed on the display panel 8 in
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accordance with the set mode. The CPU 131 functions as a display control unit by executing the
display control program 134f.
[0032]
Here, a method of displaying an image in the execution of the display control program 134 f will
be described with reference to FIG. 4. For example, when the corner portion side provided with
the first transmitter 121 and the second transmitter 122 is determined to be in the right
direction by the execution of the determination program 134e and the right hand mode is set,
the CPU 131 can As shown in a), the first transmitter 121 that has detected that the hand is
touched is on the lower side, and the video is displayed in the direction in which one second
transmitter 122 is on the upper side. Thus, the operator can view the image by holding the
portable television receiver 100 with the right hand. In addition, when the corner portion side
provided with the first transmitter 121 and the second transmitter 122 is determined to be in the
left direction by the execution of the determination program 134e, and the left hand mode is set,
the CPU 131 can As shown in b), the second transmitter 122 that has detected that the hand has
been touched is on the lower side, and an image is displayed in the direction in which one first
transmitter 121 is on the upper side. Thus, the operator can hold the portable television receiver
100 with his left hand to perform viewing.
[0033]
The key operation setting program 134g sets, for example, the operation contents of the
operation keys SW1 to SW5 in the operation unit 10 in the CPU 131 in accordance with the
direction determined by the execution of the determination program 134e, and the control
according to the set operation contents Is a program for realizing the function of performing
Specifically, when executing the determination program 134e, the CPU 131 determines the
direction in which the portable television receiver 100 is being used, and sets the right hand
mode / left hand mode by referring to the operation setting table 1322a. The operation content
of each operation key SW1 to SW5 provided in the operation unit 10 is set in accordance with
the set mode. Then, control according to the set operation content is performed on the operated
operation key.
[0034]
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13
FIG. 5 is a view exemplifying the operation setting table 1322 a stored in the data area 1322 of
the memory unit 132. As shown in FIG. 5, in the operation setting table 1322a, operation
contents in each of the right hand mode / left hand mode are stored for each of the operation
keys SW1 to SW5 provided on the operation unit 10. When the right-hand mode or the left-hand
mode is set and the user performs key operation, the CPU 131 refers to the operation setting
table 1322 a to control the operation content associated with the operated operation key in the
set mode. I do. That is, for example, when the operation key SW1 configuring the cross key is
operated when the right hand mode is set, the CPU 131 determines that the operation key
instructing the operation of “up” is pressed and performs control. Do. On the other hand, when
the operation key SW1 is operated when the left hand mode is set, the CPU 131 determines that
the operation key for instructing the "down" operation has been pressed and performs control.
Thus, when using the portable television receiver 100, the operator can operate the operation
keys without being aware of the orientation of the device body 1.
[0035]
(Structure of Receiver) Next, the main structure of the receiver 2 of the portable television
receiver 100 will be described with reference to FIG. The receiver 2 includes a receiver body 21
and a headphone 22. The receiver body 21 and the headphone 22 are connected by a cord unit
23.
[0036]
The receiver main body unit 21 includes a second light receiving element 211, an IrDA interface
212, and a control unit 213.
[0037]
In the second light receiving element 211, the operator's hand is selected from the light emitting
element 121 a of the first transmitter 121 of the device main unit 1 or the light emitting element
122 a of the second transmitter 122 when executing the voice transmission control program 134
d described above. It receives an audio signal wirelessly transmitted from the light emitting
element 121a / 122a which is not touched, and transmits the received audio signal to the IrDA
interface 212.
The IrDA interface 212 demodulates the audio signal output from the signal processing unit 7,
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and outputs the demodulated audio signal to the headphone 22 via the code unit 23.
[0038]
The control unit 213 is configured to include a CPU 2131, a memory 2132, a ROM 2133 and the
like.
[0039]
The CPU 2131 executes various programs stored in the ROM 2133 in accordance with input
operation signals and the like inputted by the input signals inputted from the respective units of
the receiver main unit 21, and the apparatus main body unit based on the program concerning
execution. By outputting an output signal to each part of 1, the overall operation of the receiver 2
is totally controlled.
[0040]
The memory 2132 includes, for example, a work area (not shown) including a volatile memory
such as a RAM, and processing results generated when various programs are executed by the
CPU 2131, input data, and the like are stored in this work area. Remember.
Further, the memory 2132 is provided with a data area (not shown) formed of a non-volatile
memory such as an EPROM.
[0041]
The ROM 2133 has, for example, a program storage area composed of a non-volatile memory,
and specifically stores the second audio output control program 2133 a.
[0042]
The second sound output control program 2133 a is a program for realizing, for example, a
function of causing the CPU 2131 to output a sound based on the sound signal received by the
second light receiving element 211 from the headphone 22.
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Specifically, when the user holds the device main unit 1 in hand and performs viewing, the
television broadcast transmitted from the light emitting elements 121a / 122a of the device main
unit 1 by execution of the voice transmission control program 134d described above When the
second light receiving element 211 provided on the front surface of the receiver main unit 21
receives the audio signal of the above, the CPU 2131 demodulates the received audio signal in
the IrDA interface 212.
Then, the voice signal thus demodulated is transmitted to the headphone 22 through the code
unit 23, and the voice is output from the headphone 22. The CPU 2131 functions as a second
sound output control unit by executing the second sound output control program 2133a.
[0043]
That is, when the user views the television program without holding the device body 1, the voice
is output from the built-in speaker 9 by the execution of the first determination program 134a
and the first voice output control program 134b described above. It will be done. On the other
hand, if the user holds the device main unit 1 to view a television program, the first
determination program 134a, the second determination program 134c, the voice transmission
control program 134d, and the second voice output control program 2133a described above. As
a result, an audio signal is transmitted from the device body 1 to the receiver 2 and audio is
output from the headphone 22. Therefore, since the audio output form is automatically switched
in accordance with the operation of the user who views the television program, the user can use
the desired audio output form without performing an operation for switching the audio output
form. You can watch it.
[0044]
According to the portable television receiver 100 in the embodiment described above, the
transmitters 12 are the first transmitters 121 and the second transmitters 121 respectively
disposed at two corner portions on the operation unit 10 side in the device body 1. In addition to
the transmitter 122, each of the first transmitter 121 and the second transmitter 122 includes
the light emitting element 121a / 122a and the first light receiving element 121b / 122b, and
the device body 1 is formed in a substantially rectangular shape. At the same time, the display
panel 8 for displaying an image and the operation unit 10 for performing a predetermined
operation are provided side by side in the long side direction. Further, in the device body 1, when
the reflected light of the light emitted by the light emitting element 121a / 122a is received by
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the first light receiving element 121b / 122b by the execution of the first determination program
134a by the CPU 131, the transmitter 12 When it is determined that the operator's hand has
touched, and it is not determined that the operator's hand has touched the transmitter 12 by the
execution of the first determination program 134a due to the execution of the first voice output
control program 134b, the voice output unit From the above, a voice is output, and it is
determined that the operator of the transmitter 12 is touched by the execution of the first
determination program 134a, the execution of the second determination program 134c causes
the first transmitter 121 or the second It is determined which of the transmitters 122 the
operator's hand has touched, and the second determination is made by execution of the voice
transmission control program 134d. An audio signal is transmitted from the light emitting
elements 121a / 122a of the first transmitter 121 or the second transmitter 122 not touched by
the operator to the receiver 2 based on the determination result by the execution of the program
134c. Ru. Further, in the receiver 2, the second light receiving element 211 receives the audio
signal transmitted from the light emitting element 121a / 122a by the audio transmission control
means, and the second audio output control means receives the audio signal by the second light
receiving element 211. Audio based on the audio signal thus output is output from the
headphone 22. That is, when performing audio output from the headphone 22, if the apparatus
main body unit 1 is held and used, audio output from the headphone 22 is automatically
performed without performing an operation for switching the audio output mode. To be done. On
the other hand, in the case of outputting sound from the built-in speaker 9, if the device main
body unit 1 is used without holding it in hand, the operation from the built-in speaker 9 is
automatically performed without performing an operation for switching the sound output form.
Audio output is performed. Therefore, in the portable television receiver 100 capable of audio
output from the wireless headphones and the speaker, the audio output form can be
automatically switched according to the user's operation, and the audio output form can be
switched. It is not necessary to operate the system and can improve usability.
[0045]
In addition, when it is determined that the operator's hand has touched the transmitter 12 by the
execution of the first determination program 134a, the execution of the determination program
134e causes the mobile phone to be portable based on the determination result by the execution
of the second determination program 134c. The horizontal direction of the television set 100 is
determined, and the display control program 134 f is executed to display an image on the display
panel 8 in accordance with the direction determined by the execution of the determination
program 134 e. Accordingly, the device body 1 can be used with either the left hand or the right
hand, and the usability is further improved.
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[0046]
The present invention is not limited to the above embodiment, and various improvements and
design changes may be made without departing from the spirit of the present invention. For
example, the wireless transmission method of the audio signal is not limited to the infrared
method by IrDA, and may be Bluetooth, for example. Moreover, when it is determined that the
operator's hand has touched the transmitter 12 by the execution of the first determination
program 134a, either the first transmitter 121 or the second transmitter 122 is executed by the
execution of the second determination program 134c. It is determined whether the operator's
hand has touched the user's hand, and the sound signal is output from the light emitting element
121a / 122a that the operator's hand is not touching. The configuration may be such that audio
signals are output from both of the light emitting elements 121a and 122a without determining
which of the two transmitters 121 and the second transmitter 122 is touched by the operator.
[0047]
FIG. 1 is a diagram showing an entire configuration of a portable television receiver of the
present embodiment. It is a figure which shows the usage example of a portable television
receiver at the time of headphone use. It is a block diagram which illustrates the principal part
composition of an apparatus main part. It is a figure which illustrates the image displayed on a
display panel at the time of right hand mode / left hand mode setting. It is a figure which
illustrates an operation setting table. It is a block diagram which illustrates the principal part
composition of a receiver.
Explanation of sign
[0048]
DESCRIPTION OF SYMBOLS 100 Portable television receiver (portable terminal device) 1 Device
main body part 8 Display panel 9 Built-in speaker (audio output part) 10 Operation part 12
Transmitter 121 1st transmitter 121a Light emitting element 121b 1st light receiving element
(light receiving element) 122 second transmitter 122a light emitting element 122b first light
receiving element 131 CPU (first determination means, first voice output control means, second
determination means, voice transmission control means, determination means, display control
means) 134a first determination program (First determination means) 134b First voice output
control program (first voice output control means) 134c Second determination program (second
determination means) 134d Voice transmission control program (voice transmission control
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means) 134e Determination program (decision means) 134f Display control program (display
control means) 2 Receiver 211 second light receiving element (reception Means) 22 headphones
2131 CPU (second sound output control means) 2133 second audio output control program
(second sound output control means)
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