JP2004165815

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DESCRIPTION JP2004165815
An object of the present invention is to assist functions of a portable terminal. A remote control
terminal 100 supporting a voice output function and a photographing function of a portable
terminal includes a CPU 110, a speaker 140, a flash light 144, and a communication IF 150 for
receiving a signal from the portable terminal. When assisting the CPU 110 acquires monaural
sound from the received audio signal and causes the speaker 140 to output the monaural sound
signal. When assisting the photographing function, the CPU 110 receives a signal relating to
photographing. Then, the flash light 144 is caused to emit light corresponding to the
photographing timing by the terminal connected to the remote control terminal 100. [Selected
figure] Figure 2
Terminal device for assisting functions of portable terminal
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
terminal device connected to a portable terminal for assisting the function of the portable
terminal, and in particular, a voice output from a portable terminal having a voice output
function. The present invention relates to a terminal device that produces stereo sound and a
terminal device that emits light in response to shooting with a portable terminal having a camera
function. 2. Description of the Related Art With the spread of mobile terminals such as mobile
phones and PDAs (Personal Digital Assistants), functions for meeting user needs have been
added. This function includes, for example, a music reproduction function and a photographing
function. However, in order to ensure the portability of the portable terminal, the functions
possessed by the portable terminal are often restricted. For example, since a portable terminal
having a music reproduction function includes only one speaker, even if data of a stereo audio
signal is stored, it can not be output as stereo audio. In addition, in the case of a mobile phone
having a camera function, it may be necessary to shoot an object whose light amount is
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insufficient. Japanese Patent Application Laid-Open No. 2002-57768 (Patent Document 1)
discloses a mobile phone capable of outputting stereo sound. This mobile phone has first and
second audio output circuits (speakers) positioned so as to face in the same direction on the
respective end sides of the case, and reproduces audio data to output first and second audio
outputs. And a reproduction circuit for outputting sound from the circuit. According to the
mobile phone disclosed in this publication, the reproduction circuit can output stereo sound in
order to output sound from the first and second speakers arranged at each end of the housing. It
will be possible. Japanese Patent Laid-Open No. 2001-320622 (Patent Document 2) discloses a
mobile phone with a camera. The mobile phone includes a flash light, a release circuit, and a
circuit for emitting light from the flash light based on the release operation. According to the
camera-equipped mobile phone disclosed in this publication, the subject can be illuminated by
the flash light, so that the subject can be clearly photographed even in the dark part. [Patent
Document 1] Japanese Patent Application Laid-Open No. 2002-57768 (Page 2, FIG. 3) [Patent
Document 2] Japanese Patent Application Laid-Open No. 2001-320622 (Item 2, FIG. 1) However,
according to the mobile phone disclosed in Japanese Patent Application Laid-Open No. 200257768, the stereo audio to be output is subject to the restriction of the position and the direction
of the speaker provided in the mobile phone. Therefore, there is a problem that there is a limit to
the acoustic characteristics (for example, three-dimensional effect) of stereo sound.
Further, according to the camera-equipped mobile phone disclosed in Japanese Patent
Application Laid-Open No. 2001-320622, when the distance to the subject is long, the flash light
is not sufficiently irradiated to the subject and the light quantity is insufficient. There was a
problem that shooting in The present invention has been made to solve the above-described
problems, and an object thereof is to compensate for an insufficient amount of light at the time of
photographing by a terminal device and a portable terminal that outputs audio reproduced by
the portable terminal as stereo sound. It is to provide a terminal device that can A terminal device
according to a first aspect of the present invention is connected to a portable terminal via a
communication line, and is connected to receiving means for receiving a signal from the portable
terminal and to the receiving means. Acquisition means for acquiring a signal related to the
function possessed by the portable terminal from the received signal, an execution means
connected to the acquisition means for executing a process for assisting the function, and
connection to the acquisition means and the execution means And control means for controlling
the execution means to perform processing based on the acquired signal. According to the first
invention, the terminal device assists the execution of the function of the portable terminal. This
function includes, for example, a function of outputting voice or a function of photographing.
When the terminal device receives a signal from the portable terminal, the acquisition unit
acquires a signal related to the function (for example, a signal representing a channel of audio, an
audio signal desired to be output to a speaker, a shooting signal, etc.). For example, when a
monaural audio signal is received, that signal is acquired. Also, when a digital signal including a
signal representing a channel of voice (for example, the right channel) output by the portable
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terminal is acquired, a voice signal of a channel of voice different from that channel (that is, the
left channel) is acquired. Alternatively, upon receiving a signal of photographing using a flash
light, the acquisition means acquires a light emission instruction signal. The execution means
executes a process (for example, output of voice, light emission of flash light, etc.) for assisting
the function of the portable terminal. The control means controls the execution means to execute
processing based on the acquired signal. For example, when a voice (monaural voice or left
channel voice) signal is acquired, the execution means outputs the voice. Alternatively, the
flashlight emits light when a signal instructing emission of the flashlight is acquired. In this
manner, processing for assisting the function of the mobile terminal is performed.
Accordingly, it is possible to provide a terminal device that outputs audio reproduced by the
mobile terminal as stereo audio and a terminal device capable of compensating for the shortage
of light amount at the time of shooting by the mobile terminal. In addition to the configuration of
the first invention, the terminal apparatus according to the second invention is connected to an
input unit for the user to input an instruction, and to the input unit, and control is performed
based on the input instruction. It further includes generation means for generating a signal, and
transmission means connected to the generation means and the communication line for
transmitting a control signal to the portable terminal. According to the second invention, the
portable terminal to which the terminal device is connected can switch the setting of the function
of the portable terminal based on the control signal received from the outside. This setting is, for
example, setting of a channel (right channel, left channel or the like) of audio output from the
portable terminal, setting for using a flash light for photographing, or the like. When the user
inputs an instruction (for example, an instruction to specify an output channel of voice, an
instruction to shoot using a flash light) to the terminal device, a control signal based on the
instruction is generated and transmitted to the portable terminal. In this way, the function of the
portable terminal can be set from the terminal device, and the convenience of the portable
terminal can be improved. In the terminal device according to the third aspect of the present
invention, in addition to the configuration of the second aspect, the control signal may be a signal
specifying a channel of voice output from the voice output means and a channel of voice output
by the terminal device Is one of the signals that specify. According to the third invention, either
the signal specifying the channel of the voice output by the portable terminal or the signal
specifying the channel of the voice output by the terminal device is generated as a control signal,
and the terminal device to the portable terminal Sent to Thereby, since different channels of
audio can be output from the portable terminal and the terminal device, output of stereo audio
becomes possible. In the terminal device according to the fourth invention, in addition to the
configuration of any of the first to third inventions, the receiving means includes means for
receiving an audio signal from the portable terminal. The acquisition means includes audio
acquisition means for acquiring audio of the second channel different from the audio of the first
channel output from the speaker. The execution means includes means for performing a process
of outputting sound. The control means includes means for controlling the audio output means to
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output the audio of the second channel. According to the fourth invention, the terminal device is
connected to a portable terminal having a function of outputting sound from the speaker and
assists the function.
That is, when the terminal device is connected to the portable terminal, when the predetermined
condition is satisfied, the portable terminal outputs the sound of the first channel (for example,
right channel) in the stereo sound from the speaker. When the receiving means of the terminal
device receives the voice from the portable terminal, the obtaining means obtains the voice of the
second channel (left channel) different from the voice of the first channel. The control means
controls an audio output means for executing an audio output process to output the audio of the
second channel. As a result, since the voice of the first channel is output from the portable
terminal and the voice of the second channel is output from the terminal device, stereo sound
can be output as a whole. [0021] In the terminal device according to the fifth invention, in
addition to the configuration of the fourth invention, the voice acquiring unit acquires voice of
the second channel based on data included in the digital audio signal. Including means.
According to the fifth invention, the audio signal output by the portable terminal is a digital audio
signal. The sound acquisition unit acquires the sound of the second channel based on data
included in the digital audio signal (for example, data representing a channel of the sound being
output at the portable terminal). Thus, even if stereo sound is received, it is possible to output a
sound channel different from the sound channel output from the portable terminal. In the
terminal device according to the sixth aspect of the invention, in addition to the configuration of
the first or second aspect, the receiving means is a means for receiving a signal related to
imaging when imaging is performed by the portable terminal. including. The acquisition means
includes means for acquiring a light emission instruction signal corresponding to imaging from a
signal related to imaging. The execution means includes light emitting means for performing the
process of emitting light. The control means includes means for controlling the light emitting
means to execute a process of emitting light when the light emission instruction signal is
received. According to the sixth aspect of the present invention, the terminal device is connected
to the portable terminal having the photographing function, and assists the photographing
function. When the user takes a picture of a subject, when the receiving means of the terminal
device receives a signal relating to the picture taking from the portable terminal, the obtaining
means obtains a light emission instruction signal corresponding to the picture taking from the
signal. The control means causes the light emitting means to emit light based on the acquired
signal. For example, when a signal instructing light emission timing is included in the signal, the
light emitting means emits light at the light emission timing to compensate for the shortage of
the light amount of the subject.
Thus, the terminal device assists the imaging function of the portable terminal. DETAILED
DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described
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below with reference to the drawings. In the following description, the same components are
denoted by the same reference numerals. Their names and functions are also the same.
Therefore, detailed description about them will not be repeated. First Embodiment FIG. 1 shows a
remote control terminal 100 and a mobile phone 200 according to a first embodiment of the
present invention. As shown in FIG. 1A, the remote control terminal 100 is connected to the
mobile phone 200 via the connection cable 300 and includes a flash light 144. The mobile phone
200 is provided with an input button 234 for the user to input data or instructions. As shown in
FIG. 1B, remote control terminal 100 further includes a speaker 140. The positions of the flash
light 144 and the speaker 140 are not particularly limited. FIG. 2 shows a control block diagram
of remote control terminal 100 according to the present embodiment. As shown in FIG. 2, the
remote control terminal 100 includes a central processing unit (CPU) 110, a liquid crystal
monitor 132, an input button 134, a microphone 138, a speaker 140, and a flash light 144
which are mutually connected by a bus. And a communication IF (Interface) 150, a LED (Light
Emitting Diode) backlight 152, a jack 154, and a DA (Digital to Analog) conversion circuit 156. As
a communication control unit, CPU 110 controls communication with an external device (for
example, mobile phone 200) connected via communication IF 150. This communication includes
reception of a signal from the external device, transmission of voice input from the microphone
138 to the external device, or a call in the remote control terminal 100 performed based on an
incoming call to the mobile phone 200 or the like. When a digital signal is received, the DA
conversion circuit 156 converts the signal into an analog signal. The CPU 110 detects whether or
not a communication cable (for example, an earphone) is connected to the jack 154 as a jack
detection unit. The CPU 110, as an output control unit, amplifies the received audio signal and
outputs it to the speaker 140. The CPU 110 controls light emission by the flash light 144 as a
light emission control unit.
For example, upon receiving an instruction signal to cause the flashlight 144 to emit light via the
communication IF 150, the CPU 110 causes the flashlight 144 to emit light. In addition, once the
flash light 144 emits light, the CPU 110 stores the flash light 144 in preparation for the next
light emission. As a key control unit, CPU 110 detects a user's instruction via input button 134
and generates a control signal, and then transmits the signal from communication IF 150 to
mobile phone 200. Thus, the user can operate the mobile phone 200 by inputting an instruction
from the remote control terminal 100. The CPU 110 controls power supply by the battery 146 as
a power control unit. For example, when a signal is not input from the outside for a
predetermined time, the CPU 110 can set the remote control terminal 100 to a power saving
mode to suppress power consumption. Conversely, when an instruction to input button 134 is
detected, CPU 110 sets remote control terminal 100 to the normal mode. Furthermore, as a
monaural sound acquisition unit, the CPU 110 acquires a specific monaural sound from the
received stereo sound. For example, when the audio signal is a digital signal, only a specific
channel can be acquired based on the control signal added to the digital signal. FIG. 3 shows a
control block diagram of mobile phone 200 connected to remote control terminal 100 according
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to the present embodiment. As shown in FIG. 3, the mobile phone 200 includes a CPU 210, a
monitor 232, an input button 234, a memory 236, a microphone 238, a speaker 240, a CCD
(Charge Coupled Device) camera 242, and a built-in flash light. 244, a battery 246, an antenna
248, and a communication IF 250. The communication IF 250 is, for example, a universal
asynchronous receiver transmitter (UART), but is not limited thereto. As described above, the
mobile phone 200 has an audio output function using the speaker 240 and a photographing
function by the CCD camera 242 in addition to the normal telephone function. The CPU 210
controls communication via the antenna 248 and the communication IF 250 as a communication
control unit. For example, when the CPU 210 receives a signal from the antenna 248 or the
communication IF 250, the CPU 210 stores the signal in the memory 236.
Alternatively, when the data stored in the memory 236 is reproduced as an audio signal, the CPU
210 outputs the signal via the antenna 248 or the communication IF 250. The CPU 210
processes an audio signal or a music signal as an audio / music signal processing unit. In this
process, a process of reading out and reproducing a signal stored in the memory 236, a process
of outputting the reproduced signal to the speaker 140, a process of writing a signal input from
the antenna 248 or the communication IF 250 into the memory 236, a signal And the like. When
stereo sound is stored in the memory 236, the CPU 210 further switches the output destination
of the sound of a specific channel based on a predetermined setting. For example, according to
the setting of the user, the CPU 210 outputs the sound of the right channel to the speaker 240
and outputs the sound of the left channel to the communication IF 250. The CPU 210 outputs the
processed audio signal or music signal to the speaker 240 as an output control unit. Thus, voice
or music is output from the speaker 240. The audio signal or the music signal is not limited to
the data stored in the memory 236, but may be a signal received via the antenna 248 or the
communication IF 250. The CPU 210 controls imaging by the CCD camera 242 based on a user's
instruction as an imaging control unit. That is, the photographing menu is displayed on the
monitor 232, the input of the setting by the user is detected, and the photographing mode is
switched based on the setting. The setting by the user is a setting of not using a flash light, a
setting of using an internal flash light 244, or a setting of using an external flash light. The CPU
210 controls the output of the battery 246 as a power control unit. For example, when the
setting of using the built-in flash light 244 is selected, the built-in flash light 244 stores electric
energy for light emission when a predetermined condition is satisfied. Referring to FIG. 4, a
control structure of a program executed in mobile phone 200 (FIG. 3) according to the present
embodiment will be described based on a flowchart. Step (hereinafter step is abbreviated as
S . At 102, the CPU 210 of the mobile phone 200 detects that the user has turned on the
power.
At S104, CPU 210 causes monitor 232 to display a function menu. The function menu is a list of
functions provided in the mobile phone 200. The user can select a function to be performed by
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the mobile phone 200 from the menu. At S106, CPU 210 displays an audio output destination
setting menu. If the mobile phone 200 has an audio output function, this menu is displayed. At
S108, CPU 210 detects the setting by the user. That is, the setting input to the menu displayed in
S106 is detected. For this setting, for example, a setting to output from the speaker 240 as
monaural sound, a setting to output from stereo headphones (not shown) connected to the
communication IF 250 as stereo sound, or the speaker 240 and external speaker (as stereo
sound) There is a setting of outputting from not shown). At S 110, CPU 210 determines whether
the output destination is a speaker or not. This determination is made based on the setting of the
audio output destination detected in S108. If the output destination is a speaker (YES in S110),
the process proceeds to S112. Otherwise (NO at S110), the process proceeds to S120. At S112,
CPU 210 determines whether or not the audio data stored in memory 236 is to be output as
stereo audio. This determination is made based on the setting of the voice output destination by
the user (S108). When outputting stereo sound (YES in S112), the process proceeds to S114. If
not (NO at S112), the process proceeds to S130. At S114, CPU 210 determines whether an
external speaker is connected. This determination is performed, for example, by detecting
whether or not the connection cable is connected to the communication IF 250. If the external
speaker is connected (YES in S114), the process proceeds to S116. If not (NO at S114), the
process proceeds to S140. At S116, CPU 210 outputs an audio signal to speaker 240 and an
external speaker. That is, the signal of the right channel and the signal of the left channel
obtained from stereo sound are output in advance (for example, the audio signal of the right
channel to the speaker 240 and the audio signal of the left channel to the communication IF
250), Each will be sent.
At S 120, CPU 210 outputs the voice read from memory 236 to the earphone connected to
communication IF 250. At S130, CPU 210 outputs the audio data stored in memory 236 to
speaker 240 as monaural audio. As a result, even if stereo sound is stored, monaural sound is
output. At S 140, CPU 210 outputs an external speaker connection request. For example, a
message indicating that a speaker is to be connected to the communication IF 250 is displayed
on the monitor 232. Referring to FIG. 5, a control structure of a program executed in remote
control terminal 100 (FIG. 2) according to the present embodiment will be described based on a
flowchart. At S 202, CPU 110 of remote control terminal 100 receives the audio signal output
from mobile phone 200 via jack 154. At S 204, CPU 110 detects a channel of audio output from
speaker 240 of mobile phone 200. For example, when a channel signal (R-ch or L-ch)
representing a channel of sound is added to the received stereo sound, the channel signal is
detected. If the received audio signal is a monaural audio signal, the channel is detected as a
monaural audio channel. At S206, CPU 110 determines whether stereo sound has been received.
This determination is made based on the audio channel detected in S204. For example, when Rch and L-ch are detected, it is determined that stereo sound is received, and when one sound
channel is detected, it is determined that monaural sound is received. If stereo sound is received
(YES at S206), the process proceeds to S208. If not (NO at S206), the process proceeds to S218.
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At S208, CPU 110 determines whether or not mobile phone 200 is outputting R-ch audio. This
determination is made based on the audio channel detected in S204. If it is determined that the
R-ch voice is being output (YES at S208), the process proceeds to S210. Otherwise (NO at S208),
the process proceeds to S214. At S210, CPU 110 obtains L-ch audio from the received stereo
audio.
At S 212, CPU 110 outputs the L-ch sound to speaker 140. At S 214, CPU 110 obtains R-ch audio
from the received stereo audio. At S216, CPU 110 outputs the R-ch sound to speaker 140. At
S218, CPU 110 outputs the received monaural sound to speaker 140. The operation of CPU 110
for realizing remote control terminal 100 according to the present embodiment based on the
above-described structure and flowchart will be described. When stereo audio is output to
remote control terminal 100 when mobile telephone 200 outputs the right channel audio and the
external speaker outputs the left channel audio, monaural audio (left channel Will be described in
the case where the voice of (1) is output to the remote control terminal 100. [When Stereo Audio
is Output to Remote Control Terminal 100] When mobile phone 200 outputs stereo audio to
communication IF 250 (S116), remote control terminal 100 receives the audio via
communication IF 150 (S202). ). If CPU 110 determines that the received voice is stereo voice
(YES in S206), and further determines that R-ch voice is output from mobile phone 200 (YES in
S208), The CPU 110 acquires an L-ch signal from stereo sound (S210). As a result, L-ch audio is
output from the speaker 140 (S212). As a result, when the mobile phone 200 outputs stereo
sound to the remote control terminal 100, the speaker 140 of the remote control terminal 100
outputs a voice (L-ch) different from the sound (R-ch) output from the speaker 240 of the mobile
phone 200 In order to output ch), the audio data stored in the memory 236 is output as stereo
audio. [When monaural sound is output to remote control terminal 100] Hereinafter, an
operation of CPU 110 will be described for a case where mobile phone 200 transmits monaural
sound to remote control terminal 100. Note that the same operation as the above operation is
not repeated here. When the user of mobile phone 200 sets the audio output destination to the
speaker (YES in S110) and selects the output of stereo audio (YES in S112), remote control
terminal 100 is connected. Of the voices stored in the memory 236, the voice of R-ch is output
from the speaker 240 of the mobile phone.
Further, at this time, L-ch voice is transmitted to the remote control terminal 100 (S116). When
remote control terminal 100 receives L-ch voice from mobile phone 200 (S 202), CPU 150
causes speaker 140 to output the voice (S 218). As a result, the R-ch sound is output from the
speaker 240 of the mobile phone 200 and the L-ch sound is output from the speaker 140 of the
remote control terminal 100. It can be output as stereo sound. <Modification of First
Embodiment> A modification of the first embodiment of the present invention will be described
below. In the first embodiment described above, the format of the audio signal output from
mobile phone 200 to remote control terminal 100 is not particularly limited, but remote control
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terminal 100 can also output digital audio signals as follows. Similarly, monaural sound can be
output from the speaker 140. The data structure of the digital audio signal according to the
present modification will be described with reference to FIG. As shown in FIG. 6, this digital audio
signal is composed of 192 frames (frame 0 to frame 191). Each frame is composed of two
subframes. Each subframe represents a field in which data is stored (hereinafter, "field" is
represented by F. Including two). Control signals are stored in F102, F106 and F110. That is, the
code "B" indicating that it is the head of the L-ch block is stored in F102. A code "W" indicating
that the block is an R-ch is stored in F106. A code M representing that it is other than the
head of the L-ch block is stored in F110. Audio data of L-ch is stored in F104. The audio data of
R-ch is stored in F108. When receiving such a digital audio signal, remote control terminal 100
outputs the audio of any channel from speaker 140 by acquiring the audio signal of the channel
to be output based on the control signal. Can. Second Embodiment Hereinafter, a remote control
terminal according to a second embodiment of the present invention will be described. The
remote control terminal and the mobile phone according to the present embodiment have the
same hardware configuration as remote control terminal 100 and mobile phone 200 according
to the above-described first embodiment.
Therefore, detailed description about them will not be repeated. Referring to FIG. 7, a control
structure of a program executed by mobile phone 200 according to the present embodiment will
be described based on a flowchart. At S 302, CPU 210 displays a shooting menu on monitor 232.
The shooting menu includes, for example, setting as to whether or not to use a flash light, and
setting as to whether the flash light to be used is the built-in flash light 244 or an external flash
light. At S 304, CPU 210 determines whether flash light setting is selected. This
determination is made, for example, based on whether or not the user has selected a menu
"setting of flash light". If setting of flash light is selected (YES in S304), the process proceeds
to S306. Otherwise (NO at S304), the process proceeds to S324. At S306, CPU 210 determines
whether the user shoots using a flashlight. This determination is made, for example, by detecting
whether the user has selected the setting of "flash light on". If a flashlight is used (YES at S306),
the process proceeds to S308. Otherwise (NO at S306), the process proceeds to S324. At S308,
CPU 210 determines whether the user uses the flashlight of the remote control terminal. This
determination is made, for example, by detecting whether or not the user has selected the setting
of use external flash light in the setting menu. When the flashlight of the remote control
terminal is used (YES in S308), the process proceeds to S310. If not (NO at S308), the process
proceeds to S320. At S310, CPU 210 determines whether the remote control terminal is
connected or not. This determination is made, for example, by detecting the state of the signal in
the communication IF 250. When the remote control terminal is connected (YES in S310), the
process proceeds to S312. If not (NO at S310), the process proceeds to S318. At S 312, CPU 210
detects that the user has pressed the shooting button.
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In S314, CPU 210 outputs an instruction signal of flash light emission to remote control terminal
100 in response to the depression of the detected shooting button. At S 318, CPU 210 outputs a
message requesting connection of remote control terminal 100 to communication IF 250, and
causes monitor 232 to display the message. At S320, CPU 210 detects that the user has pressed
the shooting button. At S322, CPU 210 outputs a light emission instruction of built-in flash light
244 in accordance with the timing of pressing the photographing button. Thereby, the built-in
flash light 244 emits light in response to the imaging timing of the CCD camera 242. At S 324,
CPU 210 detects that the user has pressed the shooting button. At S330, CPU 210 operates CCD
camera 242 to photograph an object. When the flash light emission instruction signal is output
(S314 or S322), shooting and emission are performed in synchronization. When the flashlight is
not used (S324), shooting is performed in response to pressing of the shooting button. A control
structure of a program executed by remote control terminal 100 according to the present
embodiment will be described based on a flowchart with reference to FIG. At S 402, CPU 110 of
remote control terminal 100 detects that the user has turned on the power. At S404, CPU 110
causes flash light 144 to be charged. At S406, CPU 110 determines whether or not storage of
flash light 144 is completed. When storage of electricity is completed (YES in S406), the process
proceeds to S408. Otherwise (NO at S406), the process proceeds to S404. At S408, CPU 110
determines whether or not an instruction signal for emitting flashlight 144 has been detected. If
the instruction signal is detected (YES at S408), the process proceeds to S410. Otherwise (NO at
S408), the process proceeds to S414. At S410, CPU 110 causes flashlight 144 to emit light. At
S412, CPU 110 stands by for a predetermined time. At this time, the CPU 110 switches the
display of the liquid crystal monitor 132 and the LED backlight 152 to the display of the low
power mode in order to reduce the power consumption of the battery 146.
At S 414, CPU 110 determines whether the user has turned off the power. When the user turns
off the power (YES in S414), the process ends. If not (NO at S414), the process proceeds to S404.
An operation of CPU 110 for realizing remote control terminal 100 according to the present
embodiment based on the above-described structure and flowchart will be described. When the
user of mobile phone 200 selects the flash light setting menu (YES in S304) and selects the
setting for using an external flash light (YES in S308), remote control terminal 100 is connected.
If there is (YES at S310), the photographing button is pressed (S312). By this pressing, an
instruction signal for emitting the flashlight 144 is output from the mobile phone 200 to the
remote control terminal 100 (S314). When the power of the remote control terminal 100 is in
the ON state (S402), the CPU 110 causes the flash light 144 to store power (S404). When the
storage is completed (YES in S406), when the instruction signal for emitting the flash light 144 is
detected (YES in S408), the CPU 110 causes the flash light 144 to emit light (S410). Thereafter,
when the user turns off the power (YES in S414), the process ends. Thus, according to remote
control terminal 100 according to the present embodiment, when a signal including a light
emission instruction is received from mobile phone 200 having a shooting function, flash light
144 of remote control terminal 100 is synchronized with the shooting by mobile phone 200.
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Emits light. As a result, it is possible to compensate for the lack of light amount at the time of
shooting of the mobile phone 200. As described above, according to remote control terminal 100
according to the first and second embodiments described in detail, based on the signal received
from mobile phone 200, the function possessed by mobile phone 200 can be assisted. . That is,
when remote control terminal 100 receives an audio signal from mobile phone 200, remote
control terminal 100 outputs a channel of audio different from the channel of audio output from
mobile phone 200, so stereo audio as a whole is output. It is output. In this case, since the two
speakers for outputting voice are respectively provided in the mobile phone and the remote
control terminal, the arrangement can be freely set.
Therefore, the acoustic characteristics of stereo sound can be improved as compared to the case
where two speakers are provided in the mobile phone. Further, when the instruction signal for
emitting the flash light is received, the remote control terminal 100 causes the flash light 144 to
emit light in synchronization with the photographing by the mobile phone 200. In this case, the
remote control terminal 100 can be disposed at an optimal position for light emission within the
range of the length of the connection cable 300 connecting the remote control terminal 100 and
the mobile phone 200. Therefore, as compared with the case where the flash light is built in the
mobile phone 200, it is possible to supply an appropriate amount of light, and it is possible to
improve the degree of freedom of photographing. It should be understood that the embodiments
disclosed herein are illustrative and non-restrictive in every respect. The scope of the present
invention is indicated not by the above description but by the claims, and is intended to include
all the modifications within the meaning and scope equivalent to the claims. BRIEF DESCRIPTION
OF THE DRAWINGS FIG. 1 is a diagram showing a remote control terminal and a mobile phone
according to an embodiment of the present invention. FIG. 2 is a control block diagram of the
remote control terminal according to the embodiment of the present invention. FIG. 3 is a control
block diagram of a mobile phone connected to the remote control terminal according to the
embodiment of the present invention. FIG. 4 is a flowchart showing a control structure of a
program executed by the mobile phone according to the first embodiment of the present
invention. FIG. 5 is a flow chart showing a control structure of a program executed by the remote
control terminal according to the first embodiment of the present invention. FIG. 6 is a diagram
showing a data structure of a digital audio signal according to a modification of the first
embodiment of the present invention. FIG. 7 is a flow chart showing a control structure of a
program executed by a mobile phone according to a second embodiment of the present
invention. FIG. 8 is a flowchart representing a control structure of a program executed by the
remote control terminal according to the second embodiment of the present invention.
[Description of the code] 100 remote control terminals, 200 mobile phones, 300 connection
cables.
09-05-2019
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