JP3455024B2 - In-car audio equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle audio device mounted on an automobile or the like, and more specifically, by accurately grasping the connection status of an external audio source to the device body, it is possible to quickly switch the audio source. Related to the technology.

[0002]

2. Description of the Related Art In an on-vehicle audio system (so-called car audio system) mounted on an automobile or the like, an internal audio source such as a radio tuner or a cassette deck is built into the main body of the system, and a continuous reproduction type CD player (hereinafter referred to as a CD player). Mainly those that can connect multiple external sound sources, such as changer). In this type of in-vehicle audio device, the drive control device in the main body of the device stores control programs corresponding to various audio sources, which can be selected by operating the audio source switching key (hereinafter referred to as function key). Sound source is driven.

Further, in recent years, the on-vehicle acoustic device tends to reduce the number of operation buttons in order to improve the visibility and operability of the display section (display), and the acoustic sources are sequentially arranged by a single function key. Many can be switched. Therefore, in the case where multiple external sound sources can be connected to the device body, the drive control device skips the unconnected external sound source at the time when the function key is operated, and outputs the internal sound source or the connected external sound source. Drive an acoustic source. At this time, it is necessary to confirm the connection status of the external sound source.
Japanese Patent Laid-Open No. 62-226403 discloses that the connection status of the sound source to be transferred next is confirmed every time the function key is operated.

[0004]

By the way, in the method of confirming the connection status when the function key is operated, it takes time from the operation of the function key until the sound source is actually switched, and the user is uncomfortable. was there. For example, if five external sound sources can be connected but only one of them is connected,
The drive control device sequentially confirms the connection status with respect to the four types of external sound sources that are not yet connected, and then the sound sources are switched for the first time. In addition, since the connection status is checked every time the function key is operated, when the user frequently operates the function key, it takes a long time to switch to a desired sound source.

Therefore, when the power of the apparatus main body is turned on, connection confirmation is performed for all external sound sources, and the connection status is stored in the RAM or the like, so that the sound source can be quickly operated by operating the function keys. A method of realizing the switching of the However, when this method is adopted, even if the power switch of the apparatus main body is turned on, no sound is output or the display is not displayed for a while, and the user feels a strong sense of discomfort. In addition, when the delay of voice output or the like is large, the user may mistakenly recognize that the device has failed, or may operate the power switch again to turn it off.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle-mounted acoustic device in which the response delay at the time of switching the acoustic source is minimized.

[0007]

In order to solve the above-mentioned problems, in the invention of claim 1, the drive control device built in the device body is housed in the device body in response to the operation of the sound source changeover switch. In an in-vehicle audio device that sequentially drives an internal audio source and a plurality of external audio sources that can be connected to the device body, the drive control device operates the audio source changeover switch for the first time after turning on the device body. Only when the connection state confirmation means for confirming the connection state of the external sound source and the sound source changeover switch are operated, based on the confirmation result of the connection state confirmation means, the internal sound source and the According to the present invention including the sound source switching means for switching the external sound source, it is possible to confirm the connection state of the external sound source by the device main body. The first time to be done only when you operate the sound source change-over switch, delay of audio output, etc. does not occur when the power is turned on or when the sound source change-over switch of the second and subsequent operation after the power is turned on.

The invention of claim 2 is the same as that of claim 1.
In the in-vehicle audio device, the drive control device is
To the internal sound source at the address formed in the storage area
The corresponding source code is registered in the order of address numbers,
2 The external sound source at the address formed in the storage area
Source code corresponding to is registered in the order of address numbers
The connection status confirmation means further comprises a storage means.
The sound source changeover switch is
The external sound to the device body only when it is operated
Detects the connection status of the source and connects to an external acoustic source
Is present in the second storage area address,
Source code corresponding to external sound source is address number
A code registration means for sequentially registering is provided.
It

The invention of claim 3 is the same as that of claim 2.
In the on-vehicle audio device, the drive control device is
Every time the source selector switch is operated, the code reader
Address advance means for advancing the address where the Dan is stationed
And the source code is registered at the destination address
In some cases, the source code is read while the source code is read.
If the mode is not registered, the address of the first storage area is
Source code registered in the address after progressing to the reply
Code reading means for reading the
The internal sound source or the external sound based on the result of inclusion.
And an acoustic source driving means for driving the sound source.
It is characterized by According to the present invention, at the time of the first operation of the sound source changeover switch, the code registration means confirms the connection state of the external sound source and registers the source code of the external sound source in the second storage area of the storage means. . Then, the code reading means reads the source code registered at the address in the station or the address of the first storage area according to the presence or absence of the source code, and the acoustic source driving means drives the acoustic source based on the source code. And from the next time the sound source selector switch is operated,
The source code is immediately read by the code reading unit, and the sound source driven by the sound source driving unit is quickly switched.

The invention of claim 4 is the same as that of claim 1.
In the in-vehicle audio device, the drive control device is
The address of the storage area corresponds to the internal sound source
Source code is registered with connection code in order of address number
The external sound source is stored in the address of the second storage area.
The source code corresponding to the connection code showing the connection status and
Both further have storage means registered in the order of address numbers ,
The connection status confirmation means is provided after turning on the power of the apparatus main body.
When the sound source selector switch is operated for the first time
Only, check the connection status of the external sound source to the device body.
And the connection code according to the detection result is stored in the second memory.
A code registration means for registering at the address of the area must be provided.
Is characterized by .

The invention of claim 5 is the same as that of claim 4.
In the on-vehicle audio device, the drive control device is
Every time the source selector switch is operated, the code reader
Address advance means for advancing the address where the Dan is stationed
And the connection code registered at the destination address
Status code, the source code registered at the address is displayed.
While reading the connection, the connection registered to the stationed address
If the cord indicates a disconnected state, the connection cord is
It progressed to the address indicating the state and was registered at that address
Code reading means for reading source code and this code
Based on the reading result of the reading means, the internal sound source or
A sound source driving means for driving the external sound source;
Is further provided. According to the present invention, at the time of the first operation of the sound source changeover switch, the connection code registration means confirms the connection status of the external sound source and indicates the connection status or the non-connection status in the second storage area of the storage means. Register the connection code. Thereafter, the code reading means reads the source code registered at the address in the station or the address of the first storage area according to the connection code, and the acoustic source driving means drives the acoustic source based on the source code. Then, from the next operation time of the sound source changeover switch, the source code is immediately read by the code reading means, and the sound source driven by the sound source driving means is quickly switched.

In the invention of claim 6 , the invention according to claim 3 or
5. In the on- vehicle audio device described in 5, the power source is turned on in the disconnection sound source storage means for storing the sound source at the time when the power supply to the device body is disconnected as the disconnection sound source. At this point, when the disconnection sound source is connected to the power-on connection determination means for determining whether or not, and if the determination result of the power-on connection determination means is affirmative, the sound source driving means to the While driving the sound source at the time of disconnection, when the judgment result of the connection judgment means at the time of power-on is negative, there is further provided a drive-on drive control means for driving the internal sound source to the sound source driving means. Suggest things.

According to the present invention, for example, when the external sound source is attached / detached while the power is off and the external sound source, which is the sound source at the time of disconnection, is no longer connected, the drive control means at power-on drives the sound source. Cause the means to drive an internal acoustic source. As a result, immediately after the power is turned on, one of the sound sources will be driven, and delay in audio output or the like will be prevented.

Further, in the invention of claim 7 , the inventions of claims 2 to 6
In the in-vehicle audio device, the drive control device determines whether or not power is applied to the device main body, and a power-on state determination means based on a determination result of the power-on state determination means, It is proposed to further include an initialization unit that initializes the second storage area of the storage unit when the power is turned off.

According to the present invention, since the second storage area of the storage means is initialized when the user turns on the power of the apparatus main body, the code registration state determination means of the sound source changeover switch is operated. The determination result is negative, and the source code corresponding to the connected external sound source is registered again in the address of the second storage area. As a result, even if the external sound source is attached or detached when the power is turned off, the sound source can be switched accurately.

Further, the invention of claim 8 proposes the vehicle-mounted acoustic device of claim 7 in which the power source is an accessory power source.

According to the present invention, the second storage area of the storage means is initialized when the driver turns the ignition key on and off.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a vehicle-mounted acoustic device according to the present invention. In this on-vehicle audio device, the main unit 1 which is the main body of the device has an ECU (Elec
In addition to the built-in tronic control unit 3), a radio tuner 5, a cassette deck 7 and a CD player 9 are housed as internal sound sources. ECU3 is CP
U, I / O interface, clock, ROM,
The radio tuner 5 is directly connected to the I / O interface, and the cassette deck 7 and the CD player 9 are connected via a bus line 11 to the I / O interface.

The main unit 1 is provided with a liquid crystal display 21 for displaying various information and an operation section 23 in which function keys 22 and the like are arranged, and exchanges signals with the ECU 3. In the figure, reference numeral 25 denotes a power key for starting the main unit 1, which is connected to an accessory power supply 27 which is a main power supply of the main unit 1. Further, 29 is a backup power supply supplied from the vehicle battery to the ECU 3, and the accessory power supply 27
It is used to drive the clock and hold the information stored in the BURAM at the time of disconnection.

On the bus line 15, four connectors 31 to 34 provided for connection of external sound sources are provided. The connector 31 corresponds to a CD changer, the connector 32 corresponds to a continuous playback MD player (hereinafter referred to as MD changer), the connector 33 corresponds to a television,
The connector 34 corresponds to a telephone. In the case of this embodiment, the MD changer 41 is connected to the connector 32, and the television 43 is connected to the connector 33.

The operation of the first embodiment will be described below with reference to the flow charts of FIGS.

A backup power supply 29 for the main unit 1
When is connected, the ECU 3 repeatedly executes the acoustic source drive control subroutine at predetermined control intervals in the procedure shown in FIGS. 2 and 3. When this subroutine is started, the ECU 3 first determines in step S1 of FIG. 2 whether or not the main unit 1 is activated, that is, the accessory power supply 27 is turned on and the power key 25 is turned on.
Is determined, and this determination is No (negative)
If so, the process returns to the start and the determination in step S1 is repeated. The ECU 3 performs only the determination in step S1 by using the backup power supply 29, but performs other processing in the subroutine by using the accessory power supply 27.

When the driver operates the ignition key and the power key 25 to activate the main unit 1 and the determination in step S1 becomes affirmative (Yes), the ECU 3
In step S3, it is determined whether the first control flag F1 is 1. The first control flag F1 is a flag indicating that the process is not immediately after the main unit 1 is started, and its initial value is set to 0.

Immediately after the main unit 1 is started, the determination in step S3 becomes No, so the ECU 3 executes step S3.
After setting the first control flag F1 to 1 in step 5, the last mode is read from BURAM in step S7. The last mode is the sound source and its setting state (the tuning position on the radio tuner 5, the playing position on the CD player, etc.) at the time when the accessory power supply 27 was last disconnected, and the backup power supply 29 is connected to the main unit 1. At the time (initial mode), the radio tuner 5 is set.

After reading the last mode in step S7, the ECU 3 determines in step S9 whether the last mode is the internal sound source. And this judgment is Y
If es, the ECU 3 drives the internal acoustic source in the last mode (either the radio tuner 5, the cassette deck 7, or the CD player 9) in step S11. Incidentally, E
The CU 3 causes the liquid crystal display 21 to display the type and state of the sound source being driven in parallel with the driving of the sound source.

When the determination in step S9 is No, that is, when the last mode is the external sound source, the ECU 3
In step S13, a signal is sent to the external acoustic source in the last mode, and it is determined whether or not the external acoustic source is still in the connected state. If the determination in step S13 is Yes, the ECU 3 drives the external acoustic source in the last mode (MD changer 41 or television 43 in this embodiment) in step S15. If the determination in step S13 is No, that is, if the external acoustic source in the last mode is removed while the main unit 1 is stopped, the ECU 3 drives the radio tuner 5 in step S17.

As described above, in the present embodiment, since any sound source is driven at the moment when the main unit 1 is activated, the user (driver or passenger) feels uncomfortable due to delay in voice output or display display. I no longer feel uncomfortable.

After driving the sound source immediately after starting, the determination in step S3 becomes No. Therefore, the ECU 3 determines whether or not the main unit 1 is stopped in step S21 of FIG. Power supply 2
It is determined whether the disconnection of 7 or the OFF operation of the power key 25 has been performed. If this judgment is No, EC
The U3 further determines in step S23 whether or not the function key 22 has been operated, and if this determination is No, the process returns to the start without performing any processing. In this case, the acoustic source started to be driven in any of steps S11, S15, and S17 is continuously driven.

When the user operates the function key 22 and the determination in step S23 becomes Yes, the ECU 3 determines in step S25 that the second control flag F2
Is determined to be 1. The second control flag F2 is
This is a flag indicating that the operation of the function key 22 in step S23 is the second or later operation after the activation of the main unit 1, and its initial value is set to 0. Since this judgment is No in the first processing, E
After setting the second control flag F2 to 1 in step S27, the CU 3 confirms the connection status of the external sound source in step S29.

That is, the ECU 3 first determines the bus line 1
1 and the external sound sources (CD changer, MD changer, TV, telephone in the present embodiment) connectable via 1 and the connectors 31 to 34, and the presence or absence of response from these external sound sources. Check the connection status with. In the present embodiment, as described above, since the MD changer 41 and the television 43 are connected, the connection of these external sound sources is confirmed. Next, the ECU 3 starts registration of the external sound source in the connection table in step S31.

As shown in FIG. 4, the connection table of the first embodiment has an address number AN and a source code SC.
It is a combination with. The address numbers AN given to the addresses are set from 01 to 07 so as to correspond to the total number of the internal sound sources and the external sound sources, and the addresses with the address numbers AN from 01 to 03 are stored in the first storage area. Is formed and the address number AN is 0
Addresses 4 to 07 are formed in the second storage area. The source code SC indicates the type of the audio source, 01 to 03 are assigned to the internal audio source (in the order of radio tuner, cassette deck, and CD player), and 04 to 07 are external audio sources (CD changer, M
D changer, TV, telephone). That is, the addresses whose address numbers AN are 01 to 03 formed in the first storage area are the source code S.
Corresponding to 01 to 03 of C, these are pre-registered in the initial state because they are internal sound sources.

Therefore, the ECU 3 has the source code SC (0) corresponding to the MD changer 41 and the television 43.
However, in the first embodiment, the ECU 3 performs this registration in the order of the address numbers AN. That is, the source code SC (05) of the MD changer 41 is registered at the address of the address number AN 04, and the source code S of the television 43 at the address of the address number AN 05.
C (06) is registered. And address number A
Addresses where N is 06 and 07 are blank because there are no corresponding external sound sources.

When the registration of the external sound source to the connection table is completed, the ECU 3 sets the address obtained by advancing the address number AN by one to the currently stationed address in step S33. After that, E
In step S35, the CU 3 reads out the address to be stationed this time, and in step S37, determines whether or not the source code SC exists at that address. Then, if this determination is Yes, the ECU 3 proceeds to step S
At 39, the sound source corresponding to the source code SC is driven, and if No, at step S41, the address number AN and the source code SC are set to 01, and the internal sound source is driven.

For example, in FIG. 4, when the address number AN of the address stationed at the time of operating the function key 22 is 03, the address number AN of this address is 04, and the ECU 3 sets the source code SC to 05. External sound source (ie, MD changer 41). Also, the function key 22
Address number A of the address stationed at the time of operation
When N is 05, the address number AN of this address is 06, but in this case, the address is blank, so the ECU 3 sets the source code SC to 01.
Drive the internal sound source (ie radio tuner 5) of

On the other hand, if the operation of the function key 22 in step S23 is the second or later operation after the activation of the main unit 1, the determination in step S25 is Yes. Therefore, the ECU 3 executes step S27.
Steps S3 to S31 are bypassed
The operation proceeds to 3 and the internal sound source or the external sound source is driven according to the procedure described above.

As described above, in this embodiment, since the function key 22 is registered in the connection table when the function key 22 is first operated, a voice output or a display delay (about 1 second) occurs at that time. However, this delay is different from the delay at the time of starting the main unit 1, and since the voice output or the display display is performed until immediately before the operation, the user is less likely to feel discomfort or discomfort. In addition, when the function key 22 is operated for the second time and thereafter, the sound source is immediately switched, and there is no delay in audio output or display. In the present embodiment, from the first operation of the function key 22 to the completion of registration in the connection table, a display indicating that the connection is being confirmed (for example, blinking a character message “TEST”, etc.) is displayed. At the same time, the voice output may be interrupted, or the sound source before the function key 22 is operated may be continuously driven during that time.

When the main unit 1 is stopped and the determination in step S21 becomes Yes, the ECU 3 determines in step S43 whether or not the accessory power supply 27 is connected. If this determination is Yes, the ECU
In No. 3, the process directly returns to the start, and the determination in step S1 is repeated. If the determination in step S43 is No, the ECU 3 initializes the connection table in step S45, and in step S47, the first flag F1 and the second flag F2.
After setting both and to 0, return to the start.

As a result, even if the external sound source is detached when the accessory power supply 27 is disconnected, if the main unit 1 is restarted and the function key 22 is operated, the external sound source is registered in the connection table each time. Will be done.

Next, a second embodiment of the present invention will be described.
The second embodiment has the same device configuration as the first embodiment and is different in the processing procedure relating to the connection table and the connection table in the above-mentioned subroutine, so only the differences will be described using the partial flowchart of FIG.

When the function key 22 is operated for the first time after the activation of the main unit 1, the ECU 3 confirms the connection status of the external sound source in step S29 of FIG.
Then, in step S31, registration of the external sound source in the connection table is started.

As shown in FIG. 6, the connection table of the second embodiment has an address number AN and a source code SC.
And the connection code CC. The address number AN given to the address is set from 01 to 07 so as to correspond to the total number of the internal sound source and the external sound source, and the address number AN is 01 to 03.
Are formed in the first storage area, and addresses with address numbers AN from 04 to 07 are formed in the second storage area.

The source code SC is set to 01 to 07. As in the first embodiment, 01 to 03 are assigned to the internal sound sources (in order of radio tuner, cassette deck, and CD player), and 04 to 07. Are assigned to external sound sources (CD changer, MD changer, TV, telephone in this order). In the case of the present embodiment, the source code SC is registered in the connection table in advance, and its value matches the value of the address number AN. Also,
In the connection code CC, 01 indicates the connection state of the sound source, 00 indicates the non-connection state of the sound source, and 01 is registered in advance in the initial state as the connection code CC at the addresses whose address numbers AN are 01 to 03. Has been done.

Therefore, the ECU 3 will register the connection code CC at the addresses whose address number AN is 04-07. In the case of this embodiment, since the MD changer 41 and the television 43 are connected, the ECU 3
Assumes that the connection code values at addresses with address numbers AN 04 and 07 are 00, and the connection code values at addresses with address numbers AN 05 and 06 are 01. It will be.

When the registration of the external sound source to the connection table is completed, the ECU 3 sets the address obtained by advancing the address number AN by one to the currently stationed address in step S33. After that, E
The CU 3 reads out the address to be stationed this time in step S35 of FIG. 5, and determines in step S37 whether or not the value of the connection code CC is 01. And E
If this determination is Yes, the CU 3 drives the sound source corresponding to the source code SC at the residence address in step S39. Further, the determination in step S37 is No.
If so, the ECU 3 proceeds to step S33 and advances the address numbers AN one by one until the determination in step S37 becomes Yes.

For example, in FIG. 6, if the address number AN of the address stationed when the function key 22 was operated is 02, the address number AN of this address is 03, and the ECU 3 sets the source code SC to 03. Drive an external sound source (ie, CD player 7). If the address number AN of the address stationed at the time of operating the function key 22 is 03, the connection code CC at the address of the address number AN 04 is 00, so the ECU
3 is the address number A whose connection code CC is 01
N advances to the address of 05, and the source code SC is 05
Drive the internal acoustic source (i.e. MD changer 41).

This concludes the description of the specific embodiment.
The invention is not limited to these embodiments.
For example, in the first embodiment, the internal sound source is driven by the absence of the source code at the residence address. However, when the connection table is created, the number of external sound sources is stored in the number memory and the address is stored. The internal sound source may be driven when the number exceeds the value of the number memory. Further, in the above embodiment,
Although the connection table is initialized when the accessory power supply is cut off, it may be initialized when the accessory power supply is turned on or when the backup power supply is disconnected. Further, the specific configuration of the device, the specific control procedure, and the like can be appropriately changed without departing from the spirit of the present invention.

[0048]

As described above, according to the on-vehicle audio system of the present invention, the source code and the connection code are registered in the connection table used for switching the audio source by switching the audio source changeover switch after starting the device. since There has to perform only the first time is operated, the effect of such may Rukoto to shorten the time until actual switched audio source from the operation of the acoustic source change-over switch.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a vehicle-mounted acoustic device according to the present invention.

FIG. 2 is a flowchart showing a control procedure in the first embodiment.

FIG. 3 is a flowchart showing a control procedure in the first embodiment.

FIG. 4 is a connection table in the first embodiment.

FIG. 5 is a partial flowchart showing a control procedure in the second embodiment.

FIG. 6 is a connection table in the second embodiment.

[Explanation of symbols]

1 main unit 3 ECU 5 Radio tuner 7 cassette deck 9 CD player 11 bus lines 21 LCD display 22 function keys 23 Operation part 25 power key 27 accessory power supply 29 Backup power supply 31-34 Connector 41 MD Changer 43 TV

Continuation of the front page (56) Reference JP-A-7-192444 (JP, A) JP-A-5-174553 (JP, A) JP-A-4-326896 (JP, A) JP-A-4-160940 (JP , A) JP-A-3-252984 (JP, A) JP-A-61-176224 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 31/00 503 G11B 31/00 525

Claims (8)

(57) [Claims] 1. A drive control device built in the device body,
In the on-vehicle audio device that sequentially switches and drives an internal audio source housed in the device main body and a plurality of external audio sources connectable to the device main body in accordance with the operation of the audio source changeover switch, the drive control device includes: Connection state confirmation means for confirming the connection state of the external sound source only when the sound source changeover switch is operated for the first time after the power of the apparatus main body is turned on, and the connection is made when the sound source changeover switch is operated. An in-vehicle acoustic device comprising: an acoustic source switching unit that switches between the internal acoustic source and the external acoustic source based on the confirmation result of the situation confirmation unit. 2. The drive control device , wherein the source code corresponding to the internal sound source is registered in the address formed in the first storage area in the order of address numbers, and the external sound is stored in the address formed in the second storage area. Source code corresponding to the source is further registered in the order of address numbers , and the connection status confirming means includes the sound source switching switch after the power of the apparatus main body is turned on.
Only when the external sound source is operated for the first time, the connection state of the external sound source to the apparatus main body is detected, and when the connected external sound source exists, the external sound source is assigned to the address of the second storage area. The vehicle-mounted audio apparatus according to claim 1, further comprising code registration means for registering corresponding source codes in the order of address numbers. 3. The drive control device reads the code every time the sound source changeover switch is operated.
Address progresser that advances the address where the inclusion means resides
When the source code is registered in the stage and the destination address
While the source code is read in, the source code is
Address of the first storage area if not registered
And proceed to read the source code registered at the address.
A code reading write means Komu seen, on the basis of the reading results of the code reading means, said internal acoustic
Source or an acoustic source driving the external acoustic source
The driving device according to claim 2, further comprising driving means.
On-board audio device. 4. The drive control device corresponds to the internal sound source at an address of a first storage area.
Source code in order of address number together with connection code
The external sound source is registered at the address of the second storage area.
The source code corresponding to the source code indicates the connection status.
Storage means to be registered in order of address numbers
However , the connection status confirmation means is configured to switch the acoustic source after the power of the apparatus main body is turned on.
Switch to the main unit only when the switch is operated for the first time.
The connection status of the sound source is detected, and the detected result is detected.
Registered connection code in the address of the second storage area
The code registration means is provided, The statement of Claim 1 characterized by the above-mentioned.
On-board audio device. 5. The drive control device is configured to read the code each time the sound source changeover switch is operated.
Address progresser that advances the address where the inclusion means resides
And the connection code registered at the destination address indicates the connection status.
In case of showing the source code registered in the address
While reading, the connection code registered to the stationed address is displayed.
If the connection code indicates the unconnected state, the connection cord
Saw registered to that address after proceeding to the address
Code reading means for reading a code, and the internal sound based on the reading result of the code reading means.
Source or an acoustic source driving the external acoustic source
The device according to claim 4, further comprising driving means.
On-board audio device. 6. The time when the power to the apparatus main body is cut off
When disconnecting the sound source of
When the sound source storage means and the device body are powered on, the disconnection sound is generated.
When the power is turned on to determine whether the Hibiki source is connected
The connection determination means and the determination result of this power-on connection determination means were positive.
In this case, the sound source driving means is connected to the disconnection sound source.
While the power is being driven, the connection is determined by the connection determination means when the power is turned on.
If the result is negative, the sound source drive means
Power-on drive control means for driving the internal sound source
Serial to claim 3 or 5, wherein, further comprising bets
On-board audio device. 7. A power supply for the drive control device to determine whether or not the device body is powered on.
A closed state determining means, based on the determination result of the power-on state determining means, power-
When the power is turned on or off, the second storage area of the storage means is
It is characterized by further comprising initialization means for initialization.
The vehicle-mounted acoustic device according to any one of claims 2 to 6. 8. The power source is an accessory power source.
The vehicle-mounted acoustic device according to claim 7.