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JP2004220667

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DESCRIPTION JP2004220667
The selection of sound sources on the main side and sub side may affect the sound source
output. SOLUTION: A mode selection unit 41 for selecting a sound source among a plurality of
sound sources, a mode setting unit 42 for setting ON the selected sound source, and an audio
signal from an arbitrary sound source (main side source) are output by a speaker 15. And the
dual mode setting unit 44 for setting ON the dual mode in which the audio signal from another
sound source (sub side source) is output by the headphone 16 is the main device 11, and the
sound sources different in the main side and the sub side source By setting ON, the prohibited
memory 38E storing the combination of the sound sources affecting the voice signal, and when
the sound source is selected, the sound sources of both the main side and sub side sources are
stored in the prohibited memory When it is determined that the combination is in the prohibition
memory, a prohibition determination unit 45 which determines whether or not the combination
is selected, the ON setting of the selected sound source is prohibited. And a control unit 48 which
controls the setting unit. [Selected figure] Figure 4
Audio device
The present invention has a plurality of sound sources, such as CDs, MDs, radios, etc., and a
speaker and a headphone for outputting an audio signal from each sound source, both the
speaker and the headphones. The present invention relates to an audio apparatus having a
function capable of simultaneously outputting audio signals from different sound sources, for
example, a dual media function. [0002] In recent years, as an audio apparatus provided with such
a dual media function, a plurality of speakers are provided, audio signals from a plurality of
sound sources can be simultaneously reproduced, and the directivity of each speaker is made
There is a variable type (for example, Patent Document 1). Now, an example of a car audio
system provided with such a general dual media function will be described with reference to the
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drawings. FIG. 11 is a system configuration diagram showing an overall configuration of a
general car audio system having dual media functions. An on-vehicle audio system 200 shown in
FIG. 11 is disposed on the front side of a vehicle interior, and includes a main device 201
provided with an internal source that is a plurality of sound source functions such as CD and
radio, and the main device 201 For example, the external source 202 is a plurality of external
device sound sources such as a CD changer and an MD changer, the front side operation unit
203 which operates the main device 201 on the front side, and the main device 201 on the rear
side of the vehicle interior It has a rear side operation unit 204 for remote control, and a speaker
205 and a headphone 206 which are connected to the main device 201 and which outputs a
voice signal from an internal source or an external source 202 as an audio. The speaker 205 is
composed of two front side speakers 205A disposed on the front side and two rear side speakers
205B disposed on the rear side. Further, the headphones 206 are disposed on the rear side. The
front operation unit 203 corresponds to the front panel of the main unit 201 disposed on the
front side, and the rear operation unit 204 corresponds to a remote control operation unit
disposed on the rear side. . The main device 201 has a dual media function, and turns on / off the
dual mode in accordance with a predetermined operation from the front side operation unit 203.
The main device 201 in dual mode OFF selects the same sound source from the plurality of
sound sources as the speaker 205 and the headphone 206, and outputs an audio signal from the
same sound source to the speaker 205 and the headphone 206.
Further, in the main device 201 in the dual mode ON, one sound source among the plurality of
sound sources is selected as the speaker 205, a different sound source is selected as the
headphone 206, and an audio signal from one sound source is the speaker 205 The audio signal
from the other sound source is audio-outputted by the headphone 206 while outputting the
audio at In main device 201, for example, when a passenger on the front side requests provision
of a different sound source such as a radio on the rear side and a passenger on the rear side, dual
mode is performed by operating front side operation unit 203 in a predetermined manner. When
set to ON, an audio signal from a radio desired by the front passenger can be output from the
speaker 205, and an audio signal from a CD desired by the rear passenger can be output from
the headphone 206. That is, the front passenger and the rear passenger can receive the provision
of audio signals from different sound sources through the speaker 205 and the headphone 206.
In the main device 201, the sound source of an audio signal output on the speaker 205 side
during dual mode ON is used as a main source, and the sound source of an audio signal output
on audio on the headphone 206 side is used as a sub source. In the main device 201, the main
operation mode or the sub operation mode can be switched according to a predetermined
operation from the front operation unit 203, and the front operation unit can be set by setting
the main operation mode. The main side source can be operated from 203 and by setting the sub
side operation mode, the sub side source can be operated. Further, the front side operation unit
203 has a main side operation mode LED for notifying that the main side operation mode is
being set, and a sub side operation mode for notifying that the sub side operation mode is being
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set. It is possible to recognize the currently set operation mode based on the lighting display of
these LEDs. According to the on-vehicle audio system 200 having such dual media function, the
dual mode is turned on / off according to the predetermined operation of the front side operation
unit 203, and the speaker 205 and the dual mode are turned on. Since different sound sources
can be provided through the headphones 206, the front and rear passengers can receive audio
signals from the different sound sources through the speakers 205 and the headphones 206,
respectively.
Patent Reference 1: Japanese Patent Application Laid-Open No. 11-75284 (See FIG. 1 and the
Abstract) However, according to the above-mentioned conventional on-vehicle audio system 200,
the dual mode is used. If the selected sound sources affect each other on the main side source
and the sub side source during ON, for example, when selecting the radio in the main side source
and the television in the sub side source, the television may be affected by the radiation noise of
the radio. It can not be viewed properly, and the selection of the sound source selected on the
main side and the sub side may affect the sound source output. In addition, it has been also
confirmed that the radiation noise of CD affects radio reception not only between radio and
television but also between CD and radio. The present invention has been made in view of the
above points, and the object of the present invention is to select the sound sources (output
sources) on the main side (first output means) and the sub side (second output means).
SUMMARY OF THE INVENTION An object of the present invention is to provide an audio device
capable of reliably preventing the influence on the output of the sound source (output source). In
order to achieve the above object, an audio apparatus according to the present invention
comprises an output source selection means for selecting an output source among a plurality of
output sources, and the output source selection means. To output an output signal from the
selected output source, mode setting means for mode-setting the output source, and an output
signal from any one of the plurality of output sources is output to the first output means. And an
operation mode setting unit configured to set an operation mode for outputting an output signal
from an output source other than the arbitrary output source to the second output unit. In the
mode setting of different output sources by one output means and the second output means,
inhibition storage means storing combinations of output sources affecting the output signal, and
the first output means by the output source selection means or When an output source is
selected as the second output means, it is determined whether the output sources of both the
first output means and the second output means are a combination of the output sources stored
in the prohibition storage means. When it is determined that the combination of the prohibition
determination unit and the output source stored in the prohibition storage unit is determined by
the prohibition determination unit, the mode setting of the output source selected by the output
source selection unit is inhibited. And control means for controlling the mode setting means.
Therefore, according to the audio apparatus of the present invention, among the plurality of
output sources, by setting different output sources by the first output means and the second
output means, an output which affects the output signal thereof The combination of the sources
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is stored in advance in the prohibition storage means, and when the output source is selected for
the first output means or the second output means by the output source selection means, the
first output means and the second output means are selected. It is determined whether or not the
output sources of both output means are a combination of the output sources stored in the
prohibition storage means, and if it is determined that the combination is a combination of the
output sources stored in the prohibition storage means, the output Since the mode setting of the
output source selected by the source selection means is inhibited, the influence on the output of
the output source due to the selection of the output sources of the first output means and the
second output means is surely prevented. To do it can.
In the audio apparatus according to the present invention, when the control means is determined
by the prohibition determining means to be a combination of the output sources stored in the
prohibition storing means, the output source selecting means is selected. The mode setting of the
output source is prohibited, the output source selecting means selects an output source not
included in the combination of the output sources stored in the prohibition storage means, and
the mode is selected to set the selected output source I was to control the setting means.
Therefore, according to the audio apparatus of the present invention, when it is determined that
the output sources of both the first output means and the second output means are a
combination of the output sources stored in the prohibition storage means, the output sources
The mode setting of the output source selected by the selection means is inhibited, an output
source not in the combination of the output sources stored in the inhibition storage means is
selected by the output source selection means, and the selected output source is selected Since
the setting is made, while the influence on the output of the output source by the selection of the
output source of the first output means and the second output means is surely prevented, the
influence occurs even if the separate operation is not performed. No output source can be
selected automatically. BEST MODE FOR CARRYING OUT THE INVENTION An on-vehicle audio
system according to an embodiment relating to an audio apparatus of the present invention will
be described below with reference to the drawings. FIG. 1 is a system configuration diagram
showing an entire configuration of a vehicle-mounted audio system according to the present
embodiment. The in-vehicle audio system 1 shown in FIG. 1 is disposed on the front side of a
vehicle interior, and includes a main unit 11 provided with an internal source 11 A, which is a
plurality of sound source functions such as CD and radio. And the external source 12, which is a
plurality of external device sound sources such as a CD changer and an MD changer, the front
side operation unit 13 for operating the main unit 11 on the front side, and the main unit 11 on
the rear side of the vehicle interior And a speaker 15 and a headphone 16 which are connected
to the main device 11 and which outputs voice signals from the internal source 11A or the
external source 12 as voice. The speaker 15 is composed of two front side speakers 15A
disposed on the front side and two rear side speakers 15B disposed on the rear side. Further, the
headphones 16 are disposed on the rear side. The front side operation unit 13 corresponds to
the front panel of the main unit 11 disposed on the front side, and the rear side operation unit 14
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corresponds to a remote control operation unit disposed on the rear side.
FIG. 2 is a front view of the front side operation unit 13. The front side operation unit 13 shown
in FIG. 2 inputs a variety of commands, a display unit 21 having a backlight function for
displaying various information, an LED indicator 22 for lighting on and displaying various
information, and the like. , And a key operation unit 23 having a lighting function. The backlight
function of the display unit 21 and the illumination function of the key operation unit 23 make it
possible to change the color. The key operation unit 23 has a dual mode key 23A for turning on /
off a dual mode described later, an operation mode setting key 23B for setting a main side
operation mode or a sub side operation mode to be described later, an internal source 11A or an
external And a source mode selection key 23C for selecting each sound source in the source 12.
The LED indicator 22 includes a main side operation mode LED 22A for notifying that the main
side operation mode is being set, and a sub side operation mode LED 22B for notifying that the
sub side operation mode is being set. have. The main device 11 has a dual media function, and as
described above, detects the key operation of the dual mode key 23 A of the front side operation
unit 13 to turn on / off the dual mode. In the main unit 11 in the dual mode OFF mode, the same
sound source is selected from the plurality of sound sources as the speaker 15 and the
headphone 16, and an audio signal from the same sound source is output to the speaker 15 and
the headphone 16. Further, in the main device 11 in the dual mode ON, one sound source among
the plurality of sound sources is selected as the speaker 15, a different sound source is selected
as the headphones 16, and the audio signal from the one sound source is the speaker 15 The
voice signal from the other sound source is voice-outputted by the headphone 16 while the voice
is outputted at In the dual mode ON, the sound source outputting sound on the speaker 15 side
is the main side source, and the sound source outputting sound on the headphone 16 side is the
sub side source. Further, in the main device 11, when the key operation of the operation mode
setting key 23B is detected during dual mode ON, the main side operation mode or the sub side
operation mode is switched and set, and the main side operation mode is set. The main side
source can be operated by the front side operation unit 13. When the sub side operation mode is
set, the front side operation unit 13 can operate the sub side source.
In the main unit 11, for example, when the passenger on the front side asks for provision of a
different sound source such as the CD player 31B on the front side and the CD changer 12B on
the rear side, the dual mode of the front side operation unit 13 The dual mode is set to ON by
turning on the key 23A, and an audio signal from the CD playback unit 31B desired by the front
passenger is output from the speaker 15 as a voice, and a CD changer unit 12B desired by the
rear passenger Can be output from the headphone 16 as an audio signal. That is, the front
passenger and the rear passenger can receive the provision of audio signals from different sound
sources through the speaker 15 and the headphone 16. FIG. 3 is a block diagram showing a
schematic configuration inside the main device 11. In addition to the display unit 21 of the front
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side operation unit 13, the LED indicator 22, and the key operation unit 23, the main device 11
shown in FIG. 3 includes, for example, a radio unit 31A, a CD reproduction unit 31B, an MD
reproduction unit 31C, etc. An internal source 31 having a plurality of sound sources, a bus
terminal 32 for bus connection with an external source 12 having a plurality of sound sources,
and a main for selecting an arbitrary sound source from the plurality of sound sources in the
internal source 31 and the external source 12 A side selector 33, a main side volume unit 34 for
adjusting the volume of an audio signal from an arbitrary sound source selected by the main side
selector 33, and an audio signal whose volume is adjusted by the main side volume unit 34 To
select an arbitrary sound source from the plurality of sound sources in the internal source 31
and the external source 12 A sub-side volume section 37 for outputting a sound to the
headphone section 16 by adjusting the volume of the audio signal from the sound source
selected by the sub-side selector 36, and a memory section 38 for storing various information.
And a microcomputer 39 that controls the entire main body device 11. The external source 12 is
connected to the bus terminal 32 of the main unit 11 through a single bus line, and for example,
a plurality of sound sources such as a CD changer unit 12A, an MD changer unit 12B, a DVD
changer unit 12C, and a television unit 12D. Have. That is, a single bus line is shared by a
plurality of sound sources in the external source 12. Further, the main side selector 33 has a
main side first input terminal 33A individually connected to each of the radio section 31A, the CD
reproducing section 31B and the MD reproducing section 31C in the internal source 31, and a
sound source in the external source 12 And a main side second input terminal 33 B selectively
connected to the bus terminal 32, and a main side output terminal 33 C outputting an audio
signal to the main side volume unit 34.
The sub-side selector 36 is connected to the sub-side first input terminal 36 A individually
connected to each of the radio unit 31 A, the CD reproducing unit 31 B and the MD reproducing
unit 31 C in the internal source 31, and the sound source in the external source 12. And a subside output terminal 36 C for outputting an audio signal to the sub-volume unit 37. FIG. 4 is a
block diagram showing a schematic configuration of the inside of the memory unit 38 and the
microcomputer 39 which are the main part of the main body device 11 according to the present
embodiment. The memory unit 38 of the main device 11 shown in FIG. 4 stores and manages a
mode memory 38 A that stores and manages source modes related to each sound source in the
internal source 31 and the external source 12, and stores the source type of each source mode.
The source type memory 38B, the current setting memory 38C for storing and managing the
source mode currently set in the main side source and the sub side source in dual mode ON, and
the main side source and the sub side source before the current setting Last mode memory 38D
that stores and manages the main side source and the sub side source as the last mode, and
stores the combined source mode that prohibits simultaneous use as the main side source and
the sub side source during dual mode ON as the prohibited mode Prohibited memory 38E to be
managed and the display unit of the front side operation unit 13 21 and a display information
memory 38F for storing and managing display information for controlling the display contents of
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the LED indicator 22 and the key operation unit 23. The source type memory 38 B stores and
manages a source type for each source mode, for example, a source type indicating whether or
not the sound source is the internal source 31 or the external source 12. The prohibited memory
38 E is a combination of sound sources which mutually affect each other depending on the sound
source selected for the main side source and the sub side source during dual mode ON, for
example, a combination of a television and a radio, a combination of a CD and a radio, etc.
Memory management is performed as prohibited mode. The last mode memory 38 D stores and
manages the source mode set in the main side source as the last mode for each source type, and
sets the source mode set in the sub side source as the last mode for each source type Memory
management. The display information memory 38 F is display information for controlling the
display contents of the display unit 21, the LED indicator 22 and the key operation unit 23 of the
front side operation unit 13. For example, in the main side operation mode, the main side
operation mode LED 22 A Lights up, the backlight function of the display unit 21 and the
illumination function of the key operation unit 22 are displayed in green, and the sub-side
operation mode LED 22B lights up in the sub-side operation mode, and the backlight function of
the display unit 21 and keys It is assumed that display information whose illumination function
of the operation unit 22 is displayed in red is stored and managed.
Further, the microcomputer 39 controls the main selector 33 and the sub selector 36 so as to
select an arbitrary sound source among the plurality of sound sources in the internal source 31
and the external source 12, and The mode setting unit 42 sets the source mode to drive the
selected sound source so as to output an audio signal from the sound source selected by the
mode selection unit 41, and detects, for example, the ON operation of the dual mode key 23A.
Then, when the mode setting unit 42 detects the ON operation of the source type determination
unit 43 that determines whether the source type of the sound source currently being set is the
external source 13 and the dual mode 23A, the dual mode is set to ON. Dual-mode setting unit
44 and the combination of the sound sources of both the main side A prohibition determination
unit 45 that determines whether or not the stop mode is in effect, a key detection unit 46 that
detects a key operation of the key operation unit 23 of the front side operation unit 13, a display
unit 21 of the front side operation unit 13, and an LED indicator A display control unit 47 for
controlling display contents of the key operation unit 23 and the key operation unit 23 and a
control unit 48 for controlling the entire main body device 11 are provided. When the source
type determination unit 43 determines that the source type of the sound source currently set is
the external source 13, the control unit 48 sets an arbitrary sound source of the internal source
20 as a mode. For example, when the sound source in the external source 12 is set in the main
side source, only the sound source in the internal source 31 is set in the sub side source, and
similarly, the sound source in the internal source 31 is set in the main side source Then, in the
sub-side source, the sound source in the external source 12 is set. That is, in the main side source
and the sub side source, different sound sources in the same source type are not simultaneously
selected. When, for example, the main side operation mode is set according to the key operation
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of the operation mode setting key 23B while the dual mode is ON, the control unit 48 displays
the display information corresponding to the main side operation mode. The display control unit
47 is controlled to read out from the information memory 38F and control the display content of
the front side operation unit 13 based on the display information. Further, when the control unit
48 detects the long press operation of the operation mode setting key 23B during the dual mode
ON, the process of replacing the sound sources of the main side source and the sub side source
currently being set, for example, currently being set When the main source is the CD reproducing
unit 31B and the sub source is the MD changer unit 12B, in this replacement process, the main
source is the MD changer unit 12B and the sub source is the CD reproducing unit 31B.
Further, when the control unit 48 detects the sound source selection operation by the source
mode selection key 23C during dual mode ON, the combination of the sound source selected by
the source mode selection key 23C and the sound source currently set is prohibited. If the
prohibition determination unit 45 determines whether the memory 38E is in the memory 38E,
and if the prohibition determination unit 45 determines that the memory 38E is in the
prohibition memory 38E, the mode of the sound source selected by the source mode selection
key 23C The setting is prohibited, and a combination of sound sources not in the prohibited
memory 38E is selected. The audio device according to the claim is the main body device 11, the
output sources are the sound sources 12A, 12B, 12C, 12D, 31A, 31B, the first output source
group is the external source 12, and the second output source group is the internal source. 31,
output source selection means is mode selection unit 41, main side selector 33 and sub side
selector 36, mode setting means is mode setting unit 42 and control unit 48, group type storage
means is source type memory 38B, output source group judgment means The source type
determination unit 43, the display unit is the display unit 21, the LED indicator 22 and the key
operation unit 23, the display information storage unit is the display information memory 38F,
the display control unit is the display control unit 47, and the operation mode setting unit is dual
mode setting Unit 44, prohibition storage means is prohibition memory 38E, prohibition
determination means is prohibition determination unit 45, control means is control unit 48, and
first output means is The second output means corresponds to the headphone 16, the first
operation mode corresponds to the dual mode OFF, and the second operation mode corresponds
to the dual mode ON. Next, the operation of the in-vehicle audio system 1 according to the
present embodiment will be described. FIG. 5 is a flowchart showing the processing operation of
the microcomputer 39 involved in the sub-side mode setting processing of the main body device
11. The sub-side mode setting process shown in FIG. 5 is a processing operation related to the
automatic setting of the sub-side source mode related to the case where the dual mode is set to
ON or OFF according to the key operation of the dual mode key 23A. It is. In FIG. 5, the control
unit 48 of the microcomputer 39 determines whether or not the dual mode is set to ON (step
S11). When it is determined that the dual mode is set to ON, the source type determination unit
43 of the microcomputer 39 determines whether the source type of the currently set source
mode is the external source 12 based on the memory content of the source type memory 38B. It
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is determined (step S12). If the control unit 48 determines that the source type of the currently
set source mode is the external source 12, then the main side source in the dual mode ON is the
source mode in the external source 12. Is selected, and the mode selector 41 is controlled to
select an arbitrary source mode in the internal source 31 by the sub-side selector 36 (step S13).
Incidentally, the arbitrary source mode in step S13 may be, for example, the sub-side source
mode related to the internal source 31 stored in the last mode memory 38D. When the control
unit 48 selects an arbitrary source mode in the internal source 31 in step S13, the control unit
48 controls the mode setting unit 42 to turn on the selected arbitrary source mode (step S14). ),
End this processing operation. When it is determined in step S 12 that the source type of the
source mode currently set is not the external source 12, the control unit 48 selects the source
mode in the internal source 31 as the main source during dual mode ON. The mode selector 41 is
controlled to select any source mode in the external source 12 by the sub-side selector 36 (step
S15), and the selected arbitrary source mode is set to ON. In step S14, the process proceeds to
step S14. Incidentally, the arbitrary source mode in step S15 may be, for example, the sub-side
source mode related to the external source 12 stored in the last mode memory 38D. If it is
determined in step S11 that the dual mode is not set to ON, it is determined that the dual mode is
OFF, and the source selector 33 selected by the main side selector 33, that is, the source mode
already set. The mode selection unit 41 is controlled to cause the sub-side selector 36 to select
the same source mode (step S16), and this processing operation ends. According to the sub-side
mode setting process shown in FIG. 5, for example, the external source 12 configured by a
plurality of sound sources sharing a single main-side second input terminal 33 B (sub-side
second input terminal 36 B) , Based on the memory contents of the source type memory 38B that
stores and manages the source type for each sound source such as the internal source 31
configured of a plurality of sound sources having individual main side first input terminals 33A
(sub side first input terminals 336A) The mode setting unit 42 determines whether the source
type of the source mode currently being set is the external source 12 or not. If it is determined
that the source type is the external source 12, the mode selection unit 41 Since selection of the
source mode related to other sound sources in the external source 12 is prohibited, audio signals
of different sound sources in the external source 12 are mixed and output. It is possible to
reliably prevent the situation of Furthermore, according to the sub-side mode setting process,
since different source modes in the same source type are not simultaneously selected in the main
side source and the sub side source, the source is separated considering only the source type. By
clarifying the specifications, the operability can be improved.
FIG. 6 is a flowchart showing the processing operation of the microcomputer 39 related to the
source mode selection processing of the main body device 11. The source mode selection process
shown in FIG. 6 is a process of selecting and setting an arbitrary source in the internal source 31
or the external source 12 as the main side source or the sub side source during the dual mode
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ON. In FIG. 6, the control unit 48 of the microcomputer 39 determines whether or not the main
side operation mode is being set (step S21). When it is determined that the main side operation
mode is set, the source type determination unit 43 of the control unit 48 determines whether the
source type of the currently set main side source is the external source 12 or not. (Step S22).
When the control unit 48 determines that the source type of the main side source is the external
source 12, the control unit 48 selects the main side second input terminal 33 B of the main side
selector 33 and selects any source in the external source 12. The mode is made selectable (step
S23). In step S23, an arbitrary source mode in the external source 12 is changed according to the
operation of the source mode selection key 23C: CD changer 12A → MD changer 12B → DVD
changer 12C → TV 12D → CD changer 12A It is possible to select in the order of →. When an
arbitrary source mode is selected by the mode selection unit 41 (step S24), the control unit 48
turns on the selected source mode by the mode setting unit 42 (step S25). This processing
operation is ended. When it is determined in step S 22 that the source type of the main side
source is the internal source 31 in step S 22, the control unit 48 selects the main side first input
terminal 33 A of the main side selector 33. The optional source mode can be selected in the
order of radio unit 31A → CD playback unit 31B → MD playback unit 31C → radio unit 31A → ...
according to the key operation of source mode selection key 23C (step S26), The process
proceeds to step S24 to select the source mode. If it is determined in step S21 that the main
operation mode is not set, the control unit 48 determines whether the sub operation mode is set
(step S27). If it is determined that the sub-side operation mode is set, the source type
determination unit 43 of the control unit 48 determines whether the source type of the currently
set sub-side source is the external source 12 or not. (Step S28).
If the control unit 48 determines that the source type of the sub-side source is the external
source 12, the control unit 48 selects the main-side second input terminal 36 B of the sub-side
selector 36 to select an arbitrary source in the external source 12. The mode is made selectable
(step S29), and the process proceeds to step S24 to select an arbitrary source mode. In step S29,
an arbitrary source mode in the external source 12 is changed according to the operation of the
source mode selection key 23C: CD changer 12A → MD changer 12B → DVD changer 12C → TV
12D → CD changer 12A It is possible to select in the order of →. When it is determined in step S
28 that the source type of the main side source is the internal source 31 in step S 28, the control
unit 48 selects the sub side first input terminal 36 A of the sub side selector 36 and The optional
source mode can be selected in the order of radio section 31A → CD playback section 31B →
radio section 31A → ... in accordance with the key operation of source mode selection key 23C
(step S30), and an optional source mode is selected. In step S24, the process proceeds to step
S24. According to the source mode selection process shown in FIG. 6, when switching and
selecting an arbitrary source mode of the main side source during dual mode ON, it is assumed
that the main side source type currently being set is the external source 12 If it is determined, an
arbitrary source in the external source 12 is selected and set, and if it is determined that the
source type on the main side is the internal source 31, an arbitrary source in the internal source
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31 is selected and set. . Similarly, when the optional source mode of the sub-side source is
switched and selected during the dual mode ON, if it is determined that the sub-side source type
currently being set is the external source 12, the inside of the external source 12 is selected. If an
arbitrary source is selected and set, and it is determined that the source type on the sub side is
the internal source 31, then an arbitrary source in the internal source 31 is selected and set. FIG.
7 is a flowchart showing the processing operation of the microcomputer 39 related to the CD
loading processing of the main body apparatus 11. The CD loading process shown in FIG. 7 is a
process of automatically setting the source mode of the CD reproduction unit 31 B by loading a
CD on the CD reproduction unit 31 B of the internal source 31 while the dual mode is ON. When
the control unit 48 detects that the CD is loaded in the CD reproducing unit 31 B, the control unit
48 determines whether the main source currently using the internal source 31 is the main side
(step S 41).
When it is determined that the control unit 48 is currently using the internal source 31 at the
main side, the mode selection unit 41 causes the CD reproduction unit 31 B to pass through the
first input terminal 33 A of the main selector 33. By selecting the side, the CD source mode is
selected as the main side source (step S42), and the CD source mode is set to ON by the mode
setting unit 42 (step S43), and this processing operation is ended. When it is determined at step
S41 that the internal source 31 is not currently being used on the main side at step S41, the
control unit 48 determines that it is the sub side, and the mode selection unit 41 determines that
the sub side is used. By selecting the side of the CD reproducing unit 31B through the first input
terminal 36A of the selector 36, the CD source mode is selected as the sub-side source (step S44),
and the process moves to step S43 to set the CD source mode ON. According to the CD loading
process shown in FIG. 7, when the CD loading to the CD reproducing unit 31 B is detected during
dual mode ON, for example, the main side currently uses the internal source 31 which is the
source type of the CD reproducing unit 31 B. In this case, the main side source is set to CD
source mode ON, and when the sub source is currently using the internal source 31, this sub side
source is set to CD source mode ON, so dual The source mode of the side (main side or sub side)
using the internal source 31 can be automatically set to the CD source mode at the time of CD
loading in the mode ON. FIG. 8 is a flowchart showing the processing operation of the
microcomputer 39 involved in the operation mode display processing of the main body device
11. The operation mode display process shown in FIG. 8 is a process for identifying and
displaying the display contents of the front side operation unit 13 at the time of setting the main
side operation mode and at the time of setting the sub side operation mode. In FIG. 8, the control
unit 48 of the microcomputer 39 determines whether the currently set operation mode is the
main side operation mode (step S 51). When it is determined that the operation mode currently
set is the main side operation mode, the display control unit 47 of the control unit 48 reads the
display information corresponding to the main side operation mode from the display information
memory 38 F (step S52) The display operation of the front operation unit 13 for the main
operation mode is controlled based on the display information corresponding to the main
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operation mode (step S53), and this processing operation is ended.
The display control for the main side operation mode is to turn on the backlight of the display
unit 21 of the front side operation unit 13 in green, turn on the main side operation mode LED
22A, and turn on the illumination of the key operation unit 23 in green. It is. When it is
determined in step S51 that the currently set operation mode is not the main side operation
mode, the control unit 48 determines whether the currently set operation mode is the sub side
operation mode. (Step S54). When it is determined that the currently set operation mode is the
sub-side operation mode, the control unit 48 reads display information corresponding to the subside operation mode from the display information memory 38 F (step S 55). By performing
display control of the front side operation unit 13 for the sub side operation mode based on the
display information corresponding to the sub side operation mode (step S56), this processing
operation is ended. The display control for the sub-side operation mode is to turn on the
backlight of the display unit 21 of the front-side operation unit 13 in red, turn on the sub-side
operation mode LED 22B, and light the illumination in the key operation unit 23 in red. It is.
According to the operation mode display process shown in FIG. 8, when the main side operation
mode is set, the backlight of the display unit 21 of the front side operation unit 13 is lit in green,
and the main operation mode LED 22 A is lit, The illumination of the key operation unit 23 is lit
in green, and when the sub-side operation mode is set, the backlight of the display unit 21 of the
front-side operation unit 13 is lit in red, the main operation mode LED 22A is turned on, and the
key operation unit Since the illumination of 23 is lit in red, it is possible to easily recognize the
currently set operation mode by visually observing the display content of the front side operation
unit 13. FIG. 9 is a flow chart showing the processing operation of the microcomputer 39
involved in the source mode switching process of the main body apparatus 11. The source mode
switching process shown in FIG. 9 is a process of switching the currently set source mode
between the main side source and the sub side source by one-touch operation while the dual
mode is ON. In FIG. 9, when the microcomputer 39 detects the long press operation of the
operation mode setting key 23 B during the dual mode ON, the microcomputer 39 starts this
source mode switching process. The control unit 48 of the microcomputer 39 turns off the main
side source mode and the sub side source mode (step S 61). The control unit 48 turns off the
main side source mode and the sub side source mode to set the currently set main side source
mode and the sub side source mode currently stored and managed in the setting memory 38C.
The reading process (step S62) executes the exchange process of the main side source mode and
the sub side source mode which are currently set (step S63).
The replacement process is a process of replacing the currently set source mode between the
main side source and the sub side source. For example, the main side source is the CD source
mode of the CD reproduction unit 31B, and the sub side source is the DVD changer unit. When
the 12C DVD changer source mode is selected, the main side source is switched to the DVD
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changer source mode, and the sub side source is switched to the CD source mode by executing
the switching process. The control unit 48 stores and updates the main side source mode and the
sub side source mode after the replacement process of step S63 as the currently set source mode
in the setting memory 38C (step S64). Further, the control unit 48 sets the main side source
mode and the sub side source mode to ON by the mode setting unit 41 (step S65), and ends this
processing operation. According to the source mode switching process shown in FIG. 9, when the
long press operation of the operation mode setting key 13 B is detected during dual mode ON,
the source mode currently set is switched between the main side source and the sub side source.
As a result, the main side source and the sub side source can be interchanged with a simple onetouch operation, without going through complicated operations. FIG. 10 is a flowchart showing
the processing operation of the microcomputer 39 related to the mode selection processing of
the main body device 11. In the mode selection process shown in FIG. 10, a combination of the
main side source mode and the sub side source mode in which the sound sources selected by the
main side source and the sub side source mutually affect each other during dual mode ON is
selected. It is processing to avoid surely. In FIG. 10, the control unit 48 of the microcomputer 39
determines whether or not an arbitrary source mode is selected by the main side selector 33 in
accordance with the key operation of the source mode selection key 23 C during the dual mode
ON. (Step S71). If an arbitrary source mode is selected by the main side selector 33, the control
unit 48 determines whether or not there is a source mode which has already been set in the sub
side source (step S72). If the prohibition determination unit 45 of the control unit 48 determines
that there is a set source mode in the sub-side source, whether the combination of the main-side
source mode and the sub-side source mode is in the prohibition memory 38E It is determined
whether or not (step S73). When it is determined that the control unit 48 is in the prohibition
memory 38E, the control unit 48 prohibits selection of an arbitrary source mode selected by the
main side selector 33 in step S71, and sets the prohibition combination in the prohibition
memory 38E. This processing operation is ended by selecting any source mode (step S74).
In step S74, the arbitrary source mode not in the prohibited combination in the prohibited
memory 38E is selected. For example, while the source mode of the radio unit 31A is set on the
sub side, the source mode of the television unit 12D on the main side is selected. When is
selected, the selection of the source mode of the television section 12D itself is not prohibited,
but in this case the mode selection for performing the television reception of the television
section 12D is prohibited, and the mode selection for performing the VTR of the television
section 12D May be performed. If an arbitrary source mode is not selected by main side selector
33 at step S71, control unit 48 determines whether any source mode is selected by sub side
selector 36 (step S71). S75). If an arbitrary source mode is selected by sub-selector 36 in step
S75, control unit 48 determines whether or not there is a set source mode in main side source
(step S76). ). If the prohibition determination unit 45 of the control unit 48 determines that there
is a set source mode in the main side source, whether the combination of the main side source
mode and the sub side source mode is in the prohibition memory 38E It is determined whether
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or not it is (step S77). If it is determined that the control unit 48 is in the prohibition memory
38E, the control unit 48 prohibits selection of an arbitrary source mode selected by the sub-side
selector 33 in step S75, and is not in the prohibition combination in the prohibition memory 38E.
By selecting an arbitrary source mode (step S78), this processing operation ends. According to
the mode selection process shown in FIG. 10, when the source mode selection operation by the
source mode selection key 23C is detected during dual mode ON, the source mode selected by
the source mode selection key 23C and the setting currently being performed If the prohibition
determination unit 45 determines whether or not the combination with the source mode is in the
prohibition memory 38E, and if the prohibition determination unit 45 determines that the
combination with the source mode is in the prohibition memory 38E, the source mode selection
23C is performed. Since the mode setting of the selected source mode is prohibited and the
source mode of the combination which is not in the prohibited memory 38E is selected, the
situation where the selected source modes respectively affect the main side source and the sub
side source mutually affect each other Can be reliably prevented. According to the present
embodiment, different source modes in the external source 12 sharing the single second input
terminal 33 B (36 B) are not simultaneously selected for the main side and the sub side, so the
external It is possible to reliably prevent a situation in which audio signals of different sound
sources in the source 12 are mixed and output.
Furthermore, according to the present embodiment, since different source modes in the same
source type are not simultaneously selected in the main side source and the sub side source, the
source type is not conscious of each other, and the source type is not selected. Because it was
made to clarify the specification of the separation of the source only consciously, the operability
can be improved. According to the present embodiment, when the main side operation mode is
set, the backlight of the display unit 21 of the front side operation unit 13 is lit in green, the main
side operation mode LED 22A is turned on, and the key operation unit 23 When the sub-side
operation mode is set, the backlight of the display unit 21 of the front-side operation unit 13 is
red-lit, the main-side operation mode LED 22A is turned on, and the illumination of the key
operation unit 23 is Since the lamp lights up in red, it is possible to easily recognize the currently
set operation mode by visually observing the display content of the front side operation unit 13.
According to the present embodiment, when the long press operation of the operation mode
setting key 13 B is detected during dual mode ON, the source mode currently set is switched
between the main side source and the sub side source. The main side source and the sub side
source can be interchanged with a simple one-touch operation without going through
complicated operations. According to the present embodiment, when the source mode selection
operation by the source mode selection key 23C is detected while the dual mode is ON, the
source mode selected by the source mode selection key 23C and the currently set source mode
are selected. It is judged by the prohibition judging unit 45 whether or not the combination of
them is in the prohibition memory 38E, and when it is judged by the prohibition judging unit 45
that the combination is in the prohibition memory 38E, the source mode selection 23C is
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selected. The mode setting of the source mode is prohibited, and a combination of source modes
not in the prohibited memory 38E is selected, so that the source modes selected for the main side
source and the sub side source may mutually affect each other reliably. It can be prevented. In
the above embodiment, during dual mode ON, for example, the main source is the CD
reproducing unit 31B, and the sub source is the MD reproducing unit 31C, and different sources
of the same source type are the main side and the sub side. According to specifications that can
not be set simultaneously, it is considered to avoid mixed output of a plurality of audio signals by
sharing a single transmission path (the second input terminals 33B and 36B). For example, as in
the source of the internal source 31 (radio unit 31A, CD reproduction unit 31B, MD reproduction
unit 31C), the main selector 33 and the sub selector 36 have the first input terminals 33A (36A)
individually. If there are two or more sources, even if they have the same source type, different
sources can be set simultaneously on the main and sub sides. Yes.
According to the audio apparatus of the present invention configured as described above, among
the plurality of output sources, mode setting of different output sources is performed by the first
output means and the second output means. And a combination of output sources affecting the
output signal is stored in advance in the inhibition storage means, and an output source is
selected as the first output means or the second output means by the output source selection
means It is determined whether the output sources of both the first output means and the second
output means are a combination of the output sources stored in the inhibition storage means,
and the combination of the output sources stored in the inhibition storage means If it is
determined that the output source selection means is set to prohibit the mode setting of the
output source selected by the output source selection means, the output according to the
selection of the output sources of the first output means and the second output means Output of
the source It is possible to reliably prevent the affect. According to the audio apparatus of the
present invention, when it is determined that the output sources of both the first output means
and the second output means are a combination of the output sources stored in the prohibition
storage means, the output source selection means Mode setting of the selected output source is
prohibited, an output source not included in the combination of the output sources stored in the
prohibition storage means is selected by the output source selection means, and the selected
output source is mode set Thus, the output of the first output means and the second output
means is selected to ensure that the output of the output source is not affected, and the output
does not occur even if it is not operated separately. The source can be selected automatically.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system configuration diagram showing an
overall configuration of a car audio system showing an embodiment related to an audio
apparatus of the present invention. FIG. 2 is a front view of a front side operation unit of the
main device related to the present embodiment. FIG. 3 is a block diagram showing a schematic
configuration inside a main device related to the present embodiment. FIG. 4 is a block diagram
showing a schematic configuration of the inside of a microcomputer and a memory unit which is
a main part of a main unit related to the present embodiment. FIG. 5 is a flow chart showing the
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processing operation of the microcomputer involved in the sub-side mode setting processing of
the main unit related to the present embodiment. FIG. 6 is a flow chart showing the processing
operation of the microcomputer involved in the source mode selection processing of the main
unit related to the present embodiment. FIG. 7 is a flowchart showing the processing operation of
the microcomputer related to the CD loading processing of the main device related to the present
embodiment. FIG. 8 is a flowchart showing the processing operation of the microcomputer
involved in the operation mode display processing of the main device related to the present
embodiment.
FIG. 9 is a flowchart showing the processing operation of the microcomputer involved in the
source mode switching process of the main device related to the present embodiment; FIG. 10 is
a flowchart showing the processing operation of the microcomputer related to the mode
selection processing of the main device related to the present embodiment. FIG. 11 is a system
configuration diagram showing an entire configuration of a conventional in-vehicle audio system
having dual media functions. Description of symbols 11 main unit (audio device) 15 speaker
(first output unit) 16 headphone (second output unit) 38 E prohibition memory (prohibition
storage unit) 41 mode selection unit (output source selection unit) 42 mode setting unit (Mode
setting unit) 44 Dual mode setting unit (operation mode setting unit) 45 Prohibition
determination unit (prohibition determination unit) 48 Control unit (Mode setting unit, control
unit)
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