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JP2000295689

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DESCRIPTION JP2000295689
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
audio system provided with a plurality of external devices including a sound source device, and
in particular, to improvement in determination of connection state between external devices and
control device and function adjustment of external devices. BACKGROUND OF THE INVENTION
1. Field of the Invention The present invention relates to a sound system, a control method
thereof, and a recording medium recording a control program thereof.
[0002]
2. Description of the Related Art An audio system such as a conventional car audio system uses a
cassette deck, a tuner, a compact disc player (CD), a minidisc player (MD) and other sound source
devices as control devices via a bidirectional data bus. It is configured to be connected and to
exchange data between each sound source device and the control device. Then, the control
device selects, as a sound source signal of the speaker, a sound source signal designated by the
user from the sound source devices connected by the user as the sound source signal, and the
signal is output via the amplifier Let flow.
[0003]
In such an acoustic system, a system check is performed when the control device executes a
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process according to a predetermined program. This is to check the connection state of the
sound source device in order to skip the part related to the sound source device which is not
connected so as not to perform extra work and to ignore the operation of the operation unit
related to the sound source device.
[0004]
In this system check, the control device sends a confirmation command to each sound source
device through the bidirectional data bus, and if there is a response within a certain period of
time, it determines that the sound source device is connected, and responds If there is not, the
method of determining that the sound source device is not connected is performed. Such a
system check is normally performed either at initial power connection, at accessory switch ON,
or at power switch ON.
[0005]
Here, "at the time of initial power connection" means the time when the sound source device is
connected to the power source by the power connector, and is performed when the sound system
is incorporated into the vehicle body. "When the accessory switch is ON" means when the
accessory switch is turned ON by the key operation of the car. "At the time of power switch ON"
means when the user turns on the power switch provided in the control device itself.
[0006]
At the time of initial power connection, although the accessory switch and the power switch are
in the OFF state, power is supplied to a part of the tone generator that requires constant power,
such as a timer and a memory. In addition, although the operation of the accessory switch and
the operation of the power switch can be performed independently of each other, if the power
switch of the control device is turned on in advance, the power of the control device is turned on
simultaneously with turning on the accessory switch. .
[0007]
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2
Furthermore, a digital sound processor unit (hereinafter referred to as a DSP unit) may be
additionally connected to the above-described acoustic system. This DSP unit is a device that
processes the signal from the sound source device and adjusts the frequency characteristics,
reverberation time, etc. so as to realize the desired acoustic characteristics and the desired sound
field such as a hole according to the inside of the car. is there. Although processing of the signal
in the DSP unit is performed by processing a digital signal, if the signal from the sound source
device is an analog signal, it is converted into a digital signal by the A / D converter and then
input to the DSP unit Be done. Even when such a DSP unit is additionally connected, a system
check is performed to incorporate the procedure for the additionally connected DSP unit into the
system.
[0008]
In addition, in such an acoustic system, it is necessary to perform clock adjustment for the tuner,
setting of ON / OFF of the FM diversity function, and image adjustment such as contrast /
dimmer for the display device. This is done later by causing the display device to display
individual adjustment screens by operating the adjustment keys in the operation unit.
Furthermore, for example, even when the DSP unit is additionally connected, after the power
switch is turned on, the adjustment screen is displayed on the display device by operating the
adjustment key in the operation unit, and the DSP mode setting, for example, high grade mode It
was necessary to switch to the simple mode. The high-level mode is a mode in which the user can
adjust the frequency characteristics, reverberation time, etc. in detail, and the simple mode sets
in advance most of the adjustment elements as described above as default values. In this mode,
the user's workload can be reduced by minimizing the adjustment by the user.
[0009]
However, in the sound system as described above, when the initial power is connected, when the
accessory switch is turned on or when the power switch is turned on, the sound source device
which has been determined to be in the connected state is subsequently selected. Even if
communication may be disabled due to any cause, the control device handles the sound source
device during connection. Then, the control unit executes a communication retry that repeats
transmission of the execution command by a certain count number, but the cause of the
communication failure is runaway of the microcomputer incorporated in the sound source unit or
contact of the cable of the bidirectional data bus If there is a defect etc, the prospect of
communication recovery is thin. Therefore, repetition of execution of such communication retry
affects the time for execution of communication with another sound source device, and the delay
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is extended to the entire acoustic system.
[0010]
Further, in the above-described acoustic system, after the power switch of the system is turned
on, it is necessary to display the adjustment screen by performing the adjustment key operation
of the operation unit for each sound source device and perform adjustment. , Operation becomes
complicated and causes delay in treatment. This is the same as in the case of performing mode
selection setting and the like of the simple DSP / high-order DSP when the external DSP unit is
connected later.
[0011]
The present invention has been proposed to solve the problems of the prior art as described
above, and its object is to be able to easily and quickly confirm the connection state of the sound
source device, and to prevent processing delay. It is providing a recording medium which
recorded an acoustic system which can be performed, its control method, and its control
program.
[0012]
The second object of the present invention is an audio system capable of easily adjusting the
function of the sound source device and capable of preventing processing delay, a control
method thereof, and a recording medium storing the control program thereof To provide.
[0013]
In order to achieve the above object, according to the invention as set forth in claim 1, a plurality
of external devices including a sound source device and a control device for controlling the
external devices are bi-directional data buses. Connected to the control device, and the control
device is controlled by the first determination means for determining the connection state with
the external device when the control device is activated, and the control target of the control
device according to the determination result by the first determination means An audio system
including system check means for determining an external device to be the second device,
wherein the control device determines a connection state between the control device and the
external device according to transmission and reception of a confirmation signal to the external
device Means, and reboot instructing means for instructing restart of the control device when the
second judging means determines the difference between the connection state at the time of
activation and the current connection state. And features.
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[0014]
The invention according to claim 5 captures the invention according to claim 1 from the
viewpoint of a method, and a control device connected via a bidirectional data bus to a plurality
of external devices including a sound source device is activated. In a control method of an
acoustic system which determines a connection state with an external device at the same time
and determines an external device to be controlled according to the determination result, control
according to transmission / reception of a confirmation signal to the external device The
connection state between the device and the external device is determined, and when the
difference between the connection state at the time of activation and the current connection state
is determined, the controller is instructed to restart.
[0015]
The invention according to claim 10 captures the invention according to claim 1 from the
viewpoint of a recording medium having a computer program recorded thereon, and is
connected to a plurality of external devices including a sound source device via a bidirectional
data bus. A control program for an acoustic system for performing, using a computer, a system
check in which a control device determines a connection state with an external device at startup
and determines an external device to be controlled according to the determination result. In the
recording medium recorded, the program causes the computer to determine the connection state
between the control device and the external device according to the transmission and reception
of the confirmation signal to the external device, and the connection state at the time of
activation and the current connection state When the difference is determined, the controller is
instructed to restart the control device.
[0016]
According to the first, fifth, and tenth inventions as described above, when the external device
determined to be in the connected state at the time of start-up becomes incommunicable due to
any cause occurring thereafter, the control device It is restarted and a system check is
performed.
Therefore, an external device that can not communicate can be disconnected from the control
target at an early stage, and processing delay can be prevented.
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[0017]
The invention according to claim 2 is the audio system according to claim 1, wherein the control
device has connection state storage means for storing a connection state with the external device,
and the control device is provided with the connection. It is characterized in that a display device
for displaying the connection state between the control device and the external device stored in
the state storage means is connected.
[0018]
The invention according to claim 6 captures the invention according to claim 2 from the
viewpoint of a method, and in the control method for an acoustic system according to claim 5, a
system check is performed on a display device connected to the control device. It is characterized
in that the previous connection state and the connection state after the system check are clearly
displayed.
[0019]
The invention according to claim 11 is an invention in which the invention according to claim 2
is captured from the viewpoint of a recording medium recording a computer program, and the
recording medium recording the control program for an audio system according to claim 10, The
connection state before the system check and the connection state after the system check are
clearly displayed on a display device connected to the control device.
[0020]
According to the invention as set forth in claims 2, 6 and 11, by displaying the difference
between the past connection state of the external device and the latest connection state on the
display device, the sound source device in which the user can not communicate can be quickly
Since accurate recognition is possible, it becomes possible to quickly and easily understand the
cause of communication failure, and to repair and restore.
[0021]
In the invention according to claim 3, a plurality of external devices including a sound source
device and a control device for controlling the external device are connected via a bidirectional
data bus, and the control device is activated at the time of activation thereof An acoustic system
comprising: first determination means for determining a connection state with an external device;
and system check means for determining an external device to be controlled by the control
device according to the determination result by the first determination means. The control device
is characterized by having function adjustment instruction means for instructing function
adjustment corresponding to the external device.
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[0022]
The invention according to claim 8 captures the invention according to claim 3 from the
viewpoint of a method, and a control device connected via a bidirectional data bus to a plurality
of external devices including a sound source device is activated. In a control method of an
acoustic system which determines a connection state with an external device and determines an
external device to be controlled according to the determination result, a function adjustment
corresponding to the external device after the system check Are designated in a predetermined
order.
[0023]
The invention according to claim 12 captures the invention according to claim 3 from the
viewpoint of a recording medium storing a computer program, and a plurality of external devices
including a sound source device are connected via a bidirectional data bus. A control program for
an acoustic system for performing, using a computer, a system check in which a control device
determines a connection state with an external device at startup and determines an external
device to be controlled according to the determination result. In the recording medium recorded,
the program causes the computer to instruct function adjustment corresponding to the external
device in the predetermined order after the system check.
[0024]
In the inventions as described above, since the function adjustment instruction is automatically
made at the time of activation of the control device, the function setting becomes easy.
[0025]
According to a fourth aspect of the present invention, in the sound system according to the third
aspect, the control device has function adjustment screen storage means for storing function
adjustment screen information corresponding to the external device, and the control device
includes: A display device for displaying the function adjustment screen is connected.
[0026]
The invention according to claim 9 captures the invention according to claim 4 from the
viewpoint of a method, and in the control method for an acoustic system according to claim 8,
the display device connected to the control device is previously determined. A screen for function
adjustment corresponding to the external device is displayed in the order of being displayed.
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[0027]
The invention according to claim 13 grasps the invention according to claim 4 from the
viewpoint of a recording medium in which a computer program is recorded, and in the recording
medium recording the control program for an audio system according to claim 12, the control A
screen for function adjustment corresponding to the external device is displayed on a display
device connected to the device in a predetermined order.
[0028]
In the inventions as described above, the function adjustment screen is automatically displayed
when the control device is started, so that the user can easily perform the function setting while
looking at the screen.
[0029]
The invention according to claim 7 is the control method according to claim 5 or 6, wherein the
control device responds to transmission and reception of a confirmation signal to the external
device based on a preset determination condition. And determining the connection state between
the control device and the external device.
[0030]
According to the seventh aspect of the invention as described above, the delay of the process can
be prevented and the accurate determination can be realized by setting the determination
condition to an appropriate value.
[0031]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention
will be described with reference to the drawings.
[0032]
(1) First Embodiment 1-1-1.
Overall Configuration As shown in the overall configuration diagram of FIG. 1, the audio system
according to the present embodiment includes a center unit 1, a plurality of sound source devices
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2 to 5 such as a CD player and an MD player, and a DSP unit 6. There is.
Each of these devices is connected by a bi-directional data bus 7, an analog voice line 8 for
carrying analog signals, or an optical fiber 9 for carrying digital signals.
The center unit 1 is connected to an operation unit 10 which is a unit for inputting an instruction
to the center unit 1 by a switch or voice recognition.
In addition, a display unit 14 such as a liquid crystal display is connected to the center unit 1 via
the image processing unit 13.
Furthermore, a speaker 12 is connected to the DSP unit 6 via an external amplifier 11.
[0033]
The center unit 1 is a device for switching the sound source to be supplied to the speaker 12 to a
desired one of the sound source devices 2 to 5 in accordance with an instruction input from the
operation unit 10, and corresponds to the "control device" in the claims. Do.
The sound source devices 2 to 5 are devices that provide signals serving as sound sources
flowing from the speaker 12.
Here, for example, the sound source devices 2 and 3 are devices that output analog signals such
as a radio tuner and a cassette player, and the sound source devices 4 and 5 are devices that
output digital signals such as a CD player and an MD player. .
The DSP unit 6 is a device that receives a signal from each of the sound source devices 2 to 5 and
sends the signal to the speaker 12.
The sound source devices 2 to 5, the display device 14, the DSP unit 6 and the like correspond to
the external device in the claims.
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[0034]
The center unit 1 and the bus input units 61 of the tone generator devices 2 to 5 and the DSP
unit 6 are first connected by a bidirectional data bus 7 for transmitting control signals such as
commands.
The connector used as the bidirectional data bus 7 also has a function as a power supply line to
each of the sound source devices 2 to 5 through the center unit 1.
The DSP unit 6 is provided with an analog signal input unit 62 for receiving analog signals from
the sound source devices 2 and 3, and the sound source devices 2 and 3 that can only output
analog signals are analog signals via analog audio lines 8. It is connected to the input unit 62.
The DSP unit 6 also includes a plurality of digital signal input units 63 for receiving digital
signals from the sound source devices 4 and 5, and the sound source devices 4 and 5 capable of
digital output are digital via optical fibers 9 respectively. The signal input unit 63 is connected.
[0035]
Although not shown, the DSP unit 6 includes an A / D conversion circuit, a selector, a control
microcomputer, a DSP-IC, a D / A conversion circuit, and the like.
The A / D conversion circuit is a circuit that converts an analog signal input from the analog
signal input unit 62 into a digital signal.
The selector is a part that switches which signal to use out of the digital signal converted by the
A / D conversion circuit and the digital signal input from the digital signal input unit 63.
The control microcomputer is means for managing the operation of each part of the DSP unit 6.
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10
The DSP-IC is an integrated circuit for performing digital processing related to sound, for
example, a digital signal input based on a user input setting value from the operation unit 10 or
based on a predetermined default value. Is a circuit that performs calculations to adjust
frequency characteristics, reverberation time, and the like.
The D / A conversion circuit is a circuit that generates an analog signal from the numerical value
calculated by the DSP-IC and outputs the analog signal to the external amplifier 11.
[0036]
1−1−2.
Next, the functions of the center unit 1 shown in FIG. 1 will be described with reference to FIG.
The various functions of the center unit 1 are actually realized by controlling the on-board
microcomputer with software such as an embedded program.
[0037]
In this case, what kind of CPU should be used, what kind of programming system should be used,
software should be stored in a ROM chip, and read from a recording medium such as a CD-ROM
and executed. There are many possible configurations. For this reason, in FIG. 2, the present
embodiment will be described using virtual circuit blocks that perform predetermined functions.
In FIG. 2, the DSP unit 6, the speaker 12 and the external amplifier 11 are not shown.
[0038]
That is, the center unit 1 includes a first determination unit 101, a system check unit 102, a
system check result storage unit 103, a second determination unit 111, a determination
condition setting unit 112, a reboot instruction unit 113, a selection unit 121, and an operation
instruction. Means 122, command input / output means 124 and display screen generation
means 125 are included.
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[0039]
The first determination means 101 connects the center unit 1 and each of the sound source
devices 2 to 5 by transmitting and receiving a confirmation command to each of the sound
source devices 2 to 5 via the bidirectional data bus 7 at the time of system startup. It is a means
to determine the state.
The system check unit 102 is a unit that reconstructs the system so as to skip the procedure
relating to the sound source device when there is a sound source device determined to be
incommunicable by the first determination unit 101. The system check result storage unit 103 is
a unit for storing the result of system reconstruction by the system check unit 102.
[0040]
The second determination unit 111 transmits and receives a confirmation command to each of
the sound source devices 2 to 5 via the bidirectional data bus 7 during the operation of the
system, so that the center unit 1 and each of the sound source devices 2 to 5 and Means for
determining the connection state of The determination condition setting unit 112 is a unit that
sets the determination condition by the second determination unit 111.
[0041]
Such determination conditions include, for example, an error timer, a communication retry
counter, and a communication failure counter. The error timer is a timer that is timed up when
there is no response after a certain time has elapsed after the transmission of one confirmation
command. The communication retry counter is a down counter that is decremented each time the
time is up with no response even when the confirmation command is sent. The communication
failure counter is a down counter that is decremented when the communication retry counter is
over. The determination condition can be set to an appropriate value according to each sound
source device, and can be set uniformly to all the sound source devices. Moreover, it is also
possible to set it as the structure which a user can set and change this determination condition
by the operation part 10. FIG.
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[0042]
Furthermore, the reboot instruction unit 113 is a unit that instructs the restart of the system
when there is a sound source device determined to be incommunicable by the second
determination unit 111. The operation instruction means 122 is a selection means 121 for
selecting a sound source device according to an instruction from the operation unit 10, and a
means for instructing the sound source device to start / stop other operations by transmitting a
start / stop command or the like. The command input / output means 124 is means for
transmitting / receiving the command of each means described above to / from the tone
generator or the DSP unit 6. The display screen generation unit 125 is a unit that generates a
screen requesting the user for the above-described system check operation instruction, a screen
for notifying the user of the system check result, and the like, and outputs the screen to the
image processing apparatus 13.
[0043]
1−2. The operation of this sound system having the above-mentioned configuration is, as will
be described in detail below, checking the connection state of the sound source device at the time
of system startup, disconnecting the uncommunicable sound source device, and thereafter
communicating the sound source device. In the event of an unavailability, the system is restarted
to disconnect the uncommunicable sound source device.
[0044]
1−2−1. System check at startup First, purchase a sound source device of the type that the
user needs for the center unit 1 and DSP unit 6, and have connectors such as bidirectional data
bus 7, analog audio line 8 and optical fiber 9 etc. By connecting, the user can configure the
desired system as described above. And since it can not be displayed on the display device
(power switch OFF) when the initial power is turned on by connector connection, it is stored that
the system check is executed when the accessory switch is ON. When the accessory switch is
turned on, the connection state of the sound source device is checked as follows, triggered by the
activation of the system. The procedure for checking the connection state in this way will be
described according to the flowchart of FIG. During the following system check, the accessory
switch of the car is in the ON state, and the power switch of the center unit 1 is in the OFF state.
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[0045]
First, the system is activated when the accessory switch is turned on after the connector is
connected (step 301), and as shown in FIG. 4, the display screen generation means 125
generates a system check request screen and displays it on the display device 14. (Step 302).
When the user issues a system check request instruction by operating the operation unit 10 (step
303), the first determination unit 101 transmits a confirmation command to each of the sound
source devices 2 to 5 via the bidirectional data bus 7 ( Step 304). At this time, as shown in FIG. 5,
the display screen generation means 125 displays a screen during system check confirmation
(step 305).
[0046]
When the first determination unit 111 receives a response command from each of the sound
source devices 2 to 6 after transmitting the confirmation command to all the sound source
devices 2 to 6 (step 306), it is in the communicable state If it can not be received, it is determined
that communication is impossible. Then, when response commands from all the sound source
devices are received (step 307), the system is maintained as it is.
[0047]
Also, if there is a sound source device determined to be incapable of communication because the
response command can not be received (step 307), the system check means 102 reconstructs the
system (step 308). In this reconstruction, when the center unit 1 executes a process according to
a predetermined program, it skips the portion related to the sound source device determined to
be incommunicable and does not perform extra work, The operation of the operation unit related
to the device is ignored. Further, the result of the system check as described above is stored in
the system check result storage means 103 (step 309).
[0048]
Since the image data representing the result of the system check as described above is generated
by the display screen generation means 125 and output through the image processing device 13,
as shown in FIG. 6, the result of the system check in the display device 14 Is displayed on the
screen (step 310).
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[0049]
1−2−2.
Execution Command to Sound Source Device Subsequently, when the user inputs a desired
operation command for the sound source device from the operation unit 10 after turning on the
power switch of the center unit 1, the selection means 121 is operated according to the
command. Select a sound source device. Then, an activation instruction command is transmitted
from the operation instruction means 122 to the selected sound source device, and the sound
source device is activated. In the DSP unit 6, when the sound source signal from the activated
sound source device is an analog signal, it is input from the analog signal input unit to the A / D
conversion circuit and converted to a digital signal in the A / D conversion circuit. , Is input to the
selector. When the sound source signal is a digital signal, it is directly input to the selector via the
digital signal input unit.
[0050]
Since the activation instruction command is inputted from the operation instruction means 122
to the control microcomputer via the bidirectional data bus 7, the signal of the corresponding
sound source device is selected by the selector based on the activation instruction command, and
the DSP -Sent to the IC. In the DSP-IC, processing is performed on the input digital signal so as to
realize frequency characteristics, reverberation time and the like according to the setting of the
user. Then, the processed digital signal is output to the D / A conversion circuit, converted into
an analog signal in the D / A conversion circuit, and output from the speaker 12 via the external
amplifier 11.
[0051]
When the sound source device is switched, the user designates a sound source device other than
the sound source device currently being reproduced from the operation unit 10. Then, a stop
instruction command to stop the performance is transmitted from the operation instructing
means 122 via the bidirectional data bus 7 to the sound source device currently selected and
playing a CD etc., so that the operation of the sound source device Will stop. Subsequently, the
operation instructing unit 122 transmits a start instruction command to the newly selected
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sound source device via the bidirectional data bus 7. Then, the sound from the newly selected
sound source device is output from the speaker 12 in the same procedure as described above.
[0052]
1−2−3. System Check in Operation Further, the procedure of the system check in the case
where a certain sound source device has become incommunicable will be described with
reference to the flow chart of FIG. That is, when the microcomputer runaway or the contact
failure of the bus cable occurs in the sound source device selected in the operation unit 10 as
described above, the start / stop instruction command is transmitted from the operation
instruction means 122 (step 701) , There is no response thereto (step 702). Then, the
determination condition setting unit 112 sets the communication failure counter, the
communication retry counter, and the error timer (steps 703 to 705).
[0053]
Then, a confirmation command is sent from the second determination unit 111 to the sound
source device (step 706), and when a response is received (step 707), the current state of the
system is maintained. If there is no response (step 707), the error timer times up after the set
time has elapsed (step 708). Then, the communication retry counter is decremented (step 709). If
the communication retry counter does not reach the predetermined retry number (step 710), the
error timer is set again to start counting (step 705), and the procedure from step 706 to step
709 is repeated. .
[0054]
The communication retry counter is sequentially decremented, and when it reaches a
predetermined number of retries (step 710), the communication failure counter is decremented
(step 711). If the communication failure counter does not reach over (step 712), the recommunication timer is set by the determination condition setting means 112 (step 713), and if
this time is up (step 714), the communication retry counter Are set (step 704), and the procedure
of steps 705 to 711 is repeated.
[0055]
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Then, when the incommunicable counter has exceeded (step 712), the second judging means
111 judges that the sound source device is incommunicable, and the reboot instructing means
113 instructs the system to restart (step 715). ).
[0056]
Thus, when the system is restarted, as shown in the flowchart of FIG. 3, a system check is
performed in the same procedure as the above-described activation.
Then, when the system is rebuilt so as to exclude the uncommunicable sound source device, the
result of the system check is stored in the system check result storage unit 103 (step 309).
[0057]
Furthermore, since the display screen generation unit 125 generates image data that shows the
difference between the system check result at the first activation and the system check result at
the restart, the image data is generated via the image processing device 13. The system check
result is displayed on the screen at 14 (step 310). This screen display is performed, for example,
as shown in FIG. 8, by inverting the character string of the sound source device corresponding to
the incommunicable state, that is, the unit indicated by CDA / C2 .
[0058]
1−3. According to the present embodiment as described above, when a communication
failure of a certain sound source device is detected, the entire system is automatically restarted,
the connection state is confirmed, and the system check is performed to reconstruct the system.
As a result, it becomes possible to early disconnect the sound source device which can not
communicate, so that processing delay is prevented and operability is improved.
[0059]
Also, by displaying the difference between the past system state and the latest system state on
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the screen, it is possible to quickly and accurately recognize the sound source device in which the
user can not communicate. Therefore, the cause of the inability to communicate can be found
easily and quickly.
[0060]
(2) Second Embodiment 2-1. Overall Configuration As shown in the overall configuration diagram
of FIG. 9, the present embodiment is an acoustic system in which a center unit 1 and a plurality
of sound source devices 2 to 5 are connected by a bidirectional data bus 7. An operation unit 10,
an image processing device 13, and a display device 14 are connected to the sensor unit 1. The
sound source devices 2 to 5 are connected to the speaker 12 via the external amplifier 11 by an
analog audio line 8 for transmitting an analog signal. This acoustic system can constitute the
same system as that of the first embodiment by connecting the DSP unit 6 later by the analog
voice line 8 and the optical fiber 9.
[0061]
Among them, the center unit 1 is a device for switching the sound source to be supplied to the
speaker 12 to a desired one of the sound source devices 2 to 5 in accordance with an instruction
input from the operation unit 10, and "control device" in the claims. It corresponds to The sound
source devices 2 to 5, the display device 14, the DSP unit 6 and the like correspond to the
external device in the claims.
[0062]
2−1−2. Next, the functions of the center unit shown in FIG. 1 will be described based on
FIG. The same components as those of the center unit 1 in the first embodiment described above
will not be described. That is, the center unit 1 has function adjustment instruction means 131
for instructing various function adjustments in the system in a predetermined order, function
adjustment image storage means 132 storing data of display screens for each function
adjustment, And an image adjustment instruction unit 133 for the display device 14. The
functions adjusted by the function adjustment instruction means 131 include, for example, a
clock adjustment function for tuner and an FM diversity setting function, and further, for the
functions adjusted through the image adjustment instruction means 133, for example, a display
device There are 14 contrast / dimmer adjustment functions. Also, the function adjustment
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instruction means 131 has a DSP mode adjustment function for selecting the simple DSP / highorder DSP mode when the DSP unit 6 is retrofitted.
[0063]
2−2. The operation of the present embodiment having the above-described configuration will
be described below. The same points as the operation in the first embodiment described above
simplify the description.
[0064]
2−2−1. Normal Function Setting First, a normal function setting procedure will be
described with reference to the flow charts of FIG. 3 and FIG. In FIG. 11, the same procedures as
those in FIG. 3 are omitted as system check (step 1101) and system check completion screen
display (step 1102). That is, as shown in FIG. 3, when the system is started at the time of initial
power supply connection (step 301) and the user issues a system check request instruction by
operating the operation unit 10, a system check is performed (steps 302 to 309) The result is
displayed on the screen (step 310). Then, as shown in FIG. 11, when the screen display of the
system check result has passed, for example, 5 seconds (step 1103), the function adjustment
instruction means 131 selects data of the clock adjustment screen from the function adjustment
image storage means 132. Since the output is performed, the clock adjustment screen is
generated by the display screen generation unit 125 and displayed on the display device 14 (step
1104).
[0065]
When the user performs clock adjustment by operating the operation unit 10 while looking at
this setting screen, the function adjustment instructing means 131 issues an instruction signal to
the tuner according to this, and clock setting is completed (step 1105). Next, since the function
adjustment instruction means 131 selects and outputs data of the FM diversity setting screen
from the function adjustment image storage means 132, the display screen generation means
125 generates an FM diversity setting screen, and the display device 14 displays it. Step 1105).
When the user selects ON / OFF of the FM diversity function by operating the operation unit 10
while viewing this setting screen, the function adjustment instructing means 131 issues an
instruction signal to the tuner in response to this, and the FM diversity is performed. The setting
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is completed (step 1107). Furthermore, since the function adjustment instruction means 131
selects and outputs data of the image adjustment screen from the function adjustment image
storage means 132, the display screen generation means 125 generates an image adjustment
screen, and the image adjustment screen is displayed on the display device 14 Step 1108). When
the user sets the contrast / dimmer of the screen by using the operation unit 10 while viewing
the setting screen, the image adjustment instructing unit 133 issues an instruction signal to the
display device 14 and the image adjustment is completed (step 1109). . After that, the POWER
OFF screen is generated by the display screen generation unit 125, displayed on the display
device 14, and the process ends.
[0066]
2−2−2. Function setting when DSP unit is connected back Next, the procedure of function
setting when the DSP unit 6 is connected back to the system will be described below with
reference to FIG. That is, when the user additionally connects the DSP unit 6 by the connector
(step 1201), a system check request command is output from the microcomputer for control of
the DSP unit 6 onto the bidirectional data bus 7 (step 1202). When the first determination unit
101 of the center unit 1 finds a system check request command, it determines that the DSP unit
6 is connected later (step 1203). Then, a system check is performed according to the procedure
from step 302 to step 310 in FIG. 3 (step 1204 in FIG. 12). That is, the system is rebuilt by the
system check means 103 so as to add the procedure concerning the DSP unit 6, and the result is
stored in the system check result storage means 103 and displayed on the display device 14
(step of FIG. 12) 1205).
[0067]
Furthermore, when the screen display of the system check result has passed, for example, 5
seconds (step 1206), the same processing as steps 1103 to 1108 in FIG. 11 is performed (steps
1207 to 1212). Furthermore, since the function adjustment instruction means 131 selects and
outputs the data of the DSP mode setting screen from the function adjustment image storage
means 132, the display screen generation means 125 generates the DSP mode setting screen and
displays it on the display device 14. Step 1213). When the user selects the simplified DSP / highlevel DSP mode by operating the operation unit 10 while looking at the setting screen, the
function adjustment instructing means 131 issues an instruction signal to the DSP unit 6 in
response to this, and the DSP Mode setting is completed (step 1214). After that, the POWER OFF
screen is generated by the display screen generation unit 125 and displayed on the display
device 14 (step 1205), and the processing is ended.
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[0068]
2−3. The effects of the present embodiment as described above are as follows. That is, since
the system check state by system addition is stored at the time of initial power supply
connection, the accessory switch is automatically turned on to display the adjustment function
setting screen, and the user turns on the power switch of the center unit 1 to use the sound
source device. The adjustment function setting can be performed before turning on. Therefore, it
is freed from the troublesomeness of setting functions such as key operation during operation,
and the safety and operability are improved. In addition, even when there is a device additionally
connected to the system, when the initial power connection is made by connecting the device to
the center unit 1 connector, the accessory switch is automatically turned on by the accessory
switch ON, so the function setting is It becomes easy.
[0069]
(3) Other Embodiments Note that the present invention is not limited to the above-described
embodiment, but includes other embodiments as exemplified below. For example, by providing
the second determination means 111, the reboot instruction means 113, and the determination
condition setting means 112 in the above-described first embodiment in the second embodiment,
the same as the first embodiment is provided. It is also possible to configure as a system that can
obtain the effects.
[0070]
Further, the type and number of sound source devices are free, and the configuration of the
processing device for receiving and processing signals from the sound source device is not
limited to those described in the above embodiments. Further, the determination condition of the
communication failure can be freely set, and the type, number, and order of function settings are
not limited to those shown in the above-described embodiment. Furthermore, a recording
medium storing a computer program for realizing the functions of the present invention is also
an aspect of the present invention.
[0071]
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As described above, according to the present invention, it is possible to easily and quickly
confirm the connection state of the sound source device, and to prevent the processing delay,
and a control method thereof It is possible to provide a recording medium in which a control
program is recorded.
[0072]
Further, according to the present invention, it is possible to provide a sound system capable of
easily adjusting the function of the sound source device and preventing a delay in processing, a
control method thereof, and a recording medium recording the control program thereof. be able
to.
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