JPH06233374A - Acoustic system equipment - Google Patents

Abstract

PURPOSE:To increase the S/N of external undesired noise entered in a supply transmission line by setting automatically a VR circuit of a main equipment to be no attenuation output when the VR circuit of the main equipment is connected to the VR circuit of an AUX equipment so as to output an output signal of the VR circuit of the main equipment to a speaker via the VR circuit of the AUX equipment. CONSTITUTION:When the connection between a main equipment 10 and an AUX equipment 15 is detected, a microcomputer 13 executes a data transfer request for VR level setting to a VR circuit 12. When the data transfer request is received and the main equipment 10 and the AUX equipment 15 are connected, the VR circuit 12 is set automatically to give a no attenuation output. A user adjustment VR level is set by the operation of an operation key 14 in the VR circuit 16 of the AUX equipment 15. Thus, the VR circuit 12 of the main equipment 10 is automatically set to non attenuation output and an acoustic output set optionally by the VR circuit 16 of the AUX equipment 15 and an amplifier 17 is outputted from a speaker 19 and a signal with excellent quality is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio system device in which a plurality of audio devices are connected, and more particularly to an AU as a main device.
The present invention relates to a sound system device suitable for connecting X devices and setting speaker output levels of respective volume circuits (hereinafter referred to as VR circuits).

[0002]

2. Description of the Related Art Conventionally, as an audio system device for connecting an AUX device to a main device and outputting the output of each VR circuit from a speaker, many of the block diagrams shown in FIGS. 8 and 9 have been provided.

In FIG. 8, reference numeral 50 is a main device of an audio system device, and the main device 50 includes a signal source unit 11.
In general, it is composed of a CD player, a cassette tape recorder, etc., and the output signal of this signal source unit 11 is a VR circuit 12 for volume adjustment and sound quality adjustment (including tone adjustment).
Is supplied to. Reference numeral 13 is a microcomputer built in the main device 50, and this microcomputer 13 (hereinafter referred to as the microcomputer 13) controls each circuit based on a command from the operation key 14.

Reference numeral 51 is an AUX device, and this AUX device 51 is a VR circuit 16 for adjusting volume and sound quality (including tone adjustment).
And an amplifier 17 for amplifying the acoustic signal output from the VR circuit 16 and the like.

The source signal from the signal source section 11 of the main device 50 is transmitted through the VR circuit 12 to the speaker output terminal 50a.
The sound is output to. This acoustic output signal is the above-mentioned AUX device 51.
Is supplied to the sound input terminal 51a of the
The level is adjusted by and is supplied to the speaker 19 from the speaker terminal 51c via the amplifier 17.

The built-in microcomputer 13 of the main device 50 is connected to the microcomputer 18 from the data input / output terminal 50b via the data input / output terminal 51b of the AUX device 51.

The VR circuits 12 and 16 of the main device 50 and the AUX device 51 are composed of, for example, electronic VR circuits, and the microcomputer 1
It is switched by a control signal from 3,18 and set to an arbitrary volume level (hereinafter, referred to as VR level), and an arbitrary sound output can be output from the speaker 19.

In the acoustic system device thus configured, the VR output 12 of the main device 50 and the VR circuit 16 of the AUX device 51 are added by adding the audio output from the main device 50 to the AUX device 51.
The acoustic output whose level is adjusted by and is output to the speaker 19.

[0009] That is, the user is
It may be confusing whether to adjust the VR circuit 12 or 16 of one of the VR circuits 16 of the AUX device 51 or which VR circuit adjusts the level. Generally, from the main device 50 to the AUX device.
In order to transmit the S / N of the audio signal level to the 51 in a good state, set the VR level of the VR circuit 12 of the main device 50 to the non-attenuated state, and set the VR output 16 of the AUX device 51 to the VR of the acoustic output. I set the level according to my taste.

When operating the operation keys 14 of the main device 50 to set the sound output level to the user adjustment level, the operation data of the operation keys 14 is transmitted via the data input / output terminals 50b and 51b.
It was supplied to the microcomputer 18 of the AUX device 51 and controlled the VR circuit 16 to set the VR level. However, the main device 50
It was necessary to set the VR circuit 12 to the state without attenuation. Alternatively, the source sound output may be supplied to the AUX device 51 by switching so as not to pass through the VR circuit 12 of the main device 50.

That is, the VR level setting of the VR circuit 12 of the main device 50 is operated in a non-attenuated state, and the VR circuit 16 of the AUX device 51 is operated.
Then, it was output from the speaker 19 as a regular sound output.

FIG. 9 is a block diagram showing another conventional example. The same parts as those in FIG. 8 are designated by the same reference numerals and the description thereof will be omitted. In FIG. 9, reference numeral 60 denotes a main device, and the main device 60 includes a first VR circuit 61 and a second VR circuit 62, and the acoustic signal from the signal source unit 11 is the first VR circuit 61.
From the first speaker terminal 60a via the speaker system
It is supplied to the 42 subwoofer speaker 42a. Further, the acoustic signal from the signal source unit 11 is supplied from the second speaker terminal 60b to the main speaker 42b of the speaker system 42 via the second VR circuit 62.

Reference numeral 41 is an operation key connected to the microcomputer 13. The operation key 41 includes a first volume operation key 41a (hereinafter referred to as a first VR key) for controlling the first VR circuit 61.
41a) and the second VR circuit 62 controlling the second
There is a VR key 41b, and the first VR key 41a is the first VR circuit.
The VR level of 61 can be set, and the VR level of the second VR circuit 62 can be set with the second VR key 41b.

Reference numeral 60c is a sound output terminal from the signal source section 11, and the source signal supplied to the sound output terminal 60c is supplied to the VR circuit 16 via the sound input terminal 51a of the AUX device 51. In addition, the microcomputer 13 of the main device 60 operates from the data input / output terminal 60d to the data input / output terminal 51 of the AUX device 51 above.
It is connected to the microcomputer 18 via b.

The audio system device thus constructed adds the source audio output from the main device 60 to the AUX device 51 so that the first and second VR circuits of the main device 60.
The sound output whose level is adjusted by the VR circuits 16 of the AUX devices 51 and 61, 62 is output to the speakers 42, 19.

In the acoustic system device thus constructed, the acoustic output from the main device 60 is added to the AUX device 51 so that the microcomputer 13 eliminates the main signal output from the second VR circuit 62 of the main device 60. The VR circuit 16 of the AUX device 51 can set the output level of the main speaker to output from the speaker 19, and the first VR circuit 61 of the main device 60 sets the output level of the subwoofer speaker 42a to output the subwoofer sound. It can be performed.

In this case, the second VR circuit 62 of the main device 60
Becomes unused and the main speaker 42b becomes unnecessary. That is, the main device 60 operates the audio system with only the first VR circuit 61 dedicated to the subwoofer audio output operating.

As described above, the subwoofer speaker 42a of the main device 60 outputs the subwoofer sound with its level set by the first VR circuit 61 and connected to the main device 60.
The main sound was output from the speaker 19 of the AUX device 51 with the VR circuit 16 setting the level.

[0019]

However, in the acoustic system device in which the conventional AUX device 51 is connected to the main device 50, the main acoustic output is output to the speaker 19 of the AUX device 51 via the VR circuit 12 of the main device 50. If you do,
There is a drawback in that the operation for setting the VR level of the VR circuit 12 to the non-attenuated state is required, which deteriorates the operability of the device and at the same time makes the operation troublesome.

Further, when the VR circuit 12 of the main device 50 is in a small output state, for example, the input level of the AUX device 51 becomes lower than the specified input level, and the VR circuit 16 and the amplifier 17 of the AUX device 51. Since the output level is greatly amplified by, if unnecessary external noise is mixed in the transmission line supplied from the main device 50 to the AUX device 51, this mixed noise will be amplified together with the signal and the S / N will deteriorate. There was a drawback.

Further, it is necessary to explain the setting operation of the VR circuit 12 of the main device 50 with an instruction manual or the like, which leads to an increase in cost, such as making the explanation easy to understand so that the user does not mishandle it. There were also drawbacks.

As in the above-mentioned other conventional examples, the subwoofer acoustic output is performed from the first VR circuit 61 of the main device 60, and the main acoustic output of the second VR circuit 62 of the main device 60 is in an unused state. Since the VR circuit 16 of the AUX device 51 was adjusting the set level of the main sound output, the above second VR circuit
There was a drawback that 62 was wasted and cost was increased.

The present invention has been made in view of the above points, and an object of the present invention is to solve the drawbacks of the conventional example and to make the VR circuit of the main device 60 into one so as to set the subwoofer level and the main speaker level. You can automatically switch between settings and settings, and further, via the VR circuit 12 of the main device 50.
When supplying audio output to the AUX device 51, the main device 50
Set the VR circuit 12 of the
It is an object to provide an audio system device capable of obtaining an audio output of good S / N quality with respect to the output of 51.

[0024]

An audio system device of the present invention comprises a main device having a volume adjusting VR circuit whose VR level is set by an operation key, and an AUX device having a volume adjusting VR circuit. In the audio system device which is connected and outputs sound from the speaker connected to the speaker terminal of the AUX device, the AUX connected to the main device
The connection detecting means for detecting the connection of the device and the volume setting means for transferring the predetermined setting level to the VR circuit of the main device and setting the VR level when the connection of the AUX device is detected are provided, and the AUX is provided. It is configured so that the VR circuit of the device is set at the user adjustment level and the sound is output from the speaker.

Further, the VR circuit may be configured such that the preset level is a non-attenuated output level.

Further, a main device having a volume and sound quality control for which a VR level is set by an operation key, or a VR circuit for adjusting only sound volume or sound quality, and a VR circuit for adjusting sound volume and sound quality or only sound volume or sound quality only In the audio system device that outputs the sound from a speaker connected to the AUX device having the above and the main device and the speaker terminal of the AUX device, the VR circuit of the main device is predetermined when the connection of the AUX device is detected. A first setting means for setting the subwoofer level and a second setting means for setting the VR circuit of the AUX device to a predetermined main speaker level are provided, and the subwoofer is connected to the speaker terminal of the main device from the speaker. Sound output and above AU
The main sound output is performed from the speaker connected to the speaker terminal of the X device.

Further, the operation keys are provided with a first mode setting key.
And a second operation key for setting a volume level, and when the connection of the AUX device is detected, the volume circuit of the main device is set to the sub mode by the first operation key, and the second operation key is set. A first setting means for setting a subwoofer volume level with the operation key, and a volume circuit for the AUX device with the first operation key set to the volume mode, and the second operation key for setting a main volume level. 2 setting means, invalidating means for invalidating the sub-mode setting function of the first operation key when the non-connection of the AUX device is detected, and the volume circuit of the main device is controlled by the first operation key. A third setting means for setting the mode and setting the main volume level by the second operation key may be provided.

[0028]

The operation of the acoustic system device according to the present invention is shown in FIG.
Also, description will be made with reference to the functional block diagrams shown in FIGS. In FIG. 1, the microcomputer of the main device can detect that the AUX device is connected to the speaker terminal of the sound output of the main device, and this connection detection includes the detection at the moment when the AUX device is connected ( Connection detection means 1).

When the microcomputer of the main device detects the connection of the AUX device, preset VR level data, that is, VR
The microcomputer reads the undamped output data of the circuit and transfers it to the VR circuit of the main device. The VR circuit which has received the data transfer of the non-attenuated output sets the VR level to the output without attenuation (non-attenuated VR level setting means 2).

Next, the user adjustment operation data by the operation key is sent to the AUX device VR circuit to the AUX device microcomputer, and the AUX device microcomputer transfers the user adjustment operation data to the AUX device VR circuit. The VR level of the VR circuit can be set (user-adjusted VR level setting means 3).

That is, the AUX device receives the acoustic output signal from the main device having the above-mentioned non-attenuated output level, and outputs the output set to the VR level adjusted by the user in the VR circuit of the AUX device to the speaker through the amplifier. (Speaker output means 4).

As described above, in the acoustic system equipment constituted by connecting the sound output terminal from the VR circuit of the main equipment and the sound input terminal of the AUX equipment, the VR circuit of the main equipment is automatically and forcibly By setting the output to non-attenuated, the source signal from the signal source section is supplied to the AUX device without being attenuated, and a large S / N ratio is obtained against the noise level mixed in on the transmission line transmitted to the AUX device. It is possible to secure good sound quality of the sound output from the AUX device.

FIGS. 4 and 5 show an acoustic system device having another connection different from the above, and the operation of the acoustic system device will be described with reference to FIGS.

In the above-mentioned sound system equipment, the first operation key is provided.
And a second VR key, the volume and sound quality of the subwoofer are adjusted by the first VR key, and the sound volume and sound quality of the main speaker are adjusted by the second VR operation key.

That is, the first VR key adjusts the VR circuit of the main device, the subwoofer acoustic signal is output from the subwoofer speaker in the speaker system connected to the main device, and the second VR key outputs the VR of the AUX device. It controls the circuit and outputs the main audio signal from the main speaker connected to the AUX device.

In the acoustic system device thus constructed, in FIG. 4, when the connection time point at which the AUX device is connected to the main device is detected (connection time detection means 20), the microcomputer of the main device determines the predetermined subwoofer. Set the level (subwoofer level setting means 21) and set VR for this subwoofer.
The level is transferred to the VR circuit of the main device (first data transfer means 22).

On the other hand, the microcomputer of the main equipment fetches the setting data of the main speaker level which has been set in the VR circuit until now and sets the main speaker level (main
SP level setting means 23). This setting data is sent to the microcomputer of the AUX device, and the main speaker level setting data is transferred to the VR circuit of the AUX device (second data transfer means 24).

As described above, the output level of the subwoofer signal is adjusted by the VR circuit of the main device to output the subwoofer acoustic signal from the subwoofer speaker, and at the same time, the output level of the main signal is adjusted by the VR circuit of the AUX device. AUX
A main sound signal can be output from the main speaker of the device (subwoofer sound output means and main sound output means 25).

That is, when the AUX device is connected to the main device, the output of the subwoofer acoustic output and the main audio output can be automatically set by the VR circuit, and the sound can be output from each connected speaker. Can use the sound system easily without looking at the instructions, and can be configured with a minimum number of VR circuits.

In the functional block diagram of FIG. 5, the operation keys are provided with a first operation key for mode setting and a second operation key for VR level setting, and check whether the AUX device is connected to the main device. When the microcomputer of the main device detects (connection detecting means 30), the first operation key is operated to set the sub mode (SUB mode) and the second operation key is used to set the subwoofer VR level (subwoofer level setting means).
31), this subwoofer VR level setting data is transferred to the VR circuit of the main device (first data transfer means 32).

When the volume mode (VOL mode) is set with the first operation key, the second operation key is operated to set the main VR level (main level setting means 33). The level setting data of the AUX device
The data is transferred to the VR circuit (second data transfer means 34).

In this way, the subwoofer sound output level is adjusted by the VR level setting data transferred to the VR circuit of the main device, and the subwoofer sound signal can be output from the subwoofer speaker connected to the main device (subwoofer sound). Output means 35).

Further, the main sound output level is adjusted by the VR level setting data transferred to the VR circuit of the AUX device,
The main audio signal can be output from the main speaker connected to the AUX device (main audio output means 35).

That is, when it is detected that the AUX device is connected to the main device, the subwoofer sound output is automatically set in the VR circuit of the main device and output from the subwoofer speaker, and the main sound output is automatically output. The level is set by the VR circuit of the AUX device and is output from the main speaker, so that the user of the audio system device can easily and effectively use the system device.

On the other hand, when the microcomputer of the main device detects that the AUX device is not connected, the SUB mode setting function of the first operation key is invalidated (invalid means 36), and the VOL of the first operation key is changed. When setting the mode, the main VR level can be set by the second operation key (main speaker level setting means 37), and the setting data of the main VR level is transferred to the VR circuit of the main device (third data transfer means). 38).

The VR transferred to the VR circuit of the main device
The VR circuit is controlled by the level setting data to set the main sound output level, and this main sound signal can be output from the main speaker (main sound output means 39).

That is, since the AUX device is not connected to the main device, the microcomputer can automatically adjust and set the main sound output level by the VR circuit of the main device and output sound from the speaker system connected to the main device. it can.

As described above, since the subwoofer output and the main sound output can be independently adjusted by the VR circuits of the main device and the AUX device and can be output independently from each speaker, the sound system A user of can use the audio system with a simple handling.

[0049]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an audio system device according to the present invention will be described with reference to FIGS. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a functional block diagram showing an operational configuration, FIG. 2 is a block diagram of a main part of hardware, and FIG. 3 is a flowchart explaining the operation.

FIGS. 4 and 5 are functional block diagrams showing the operational configuration of another embodiment, FIG. 6 is a block diagram of the essential parts of the hardware of another embodiment, and FIG. 7 is a description of the operation. It is a flow chart.

In FIG. 2, reference numeral 10 is a main device, and the main device 10 outputs a source signal from a signal source section 11 to a speaker terminal 10a via a volume circuit 12 (hereinafter referred to as VR circuit 12), The signal source unit 11 and the VR circuit 12 have a built-in microcomputer 13 (hereinafter, a microcomputer
13).

Reference numeral 15 is an AUX device, and the audio signal supplied to the audio input terminal 15a of the AUX device 15 is output to the speaker terminal 15c via the VR circuit 16 and the amplifier 17. Reference numeral 18 denotes a microcomputer, which controls the VR circuit 16 and the like and is connected to the data input / output terminal 15b. 19
Is a speaker connected to the speaker terminal 15c of the AUX device 15.

As is well known, the microcomputers 13 and 18 basically include a CPU, a ROM, a RAM, an input port and an output port (not shown), and a program for controlling the CPU is written in the ROM. The CPU operates the operation keys 14 and data input / output terminals 10 connected to the input port according to this program.
External data required from b, 15b, etc. is taken in, or data is transferred to and from RAM for arithmetic processing, and if necessary, the processed data is output from the VR circuits 12, 16 and data. Output to input / output terminals 10b, 15b.

In the acoustic system device thus constructed, the source signal from the signal source section 11 of the main device 10 is the VR circuit.
It is supplied to the AUX device 15 via 12 and further VR of the AUX device 15
It is sent to the speaker 19 via the circuit 16. That is, the output level of the speaker 19 of the source signal is VR of the main device 10.
The output level can be adjusted by the circuit 12 and the VR circuit 16 of the AUX device 15.

Further, the microcomputer 13 of the main device 10 and the microcomputer 18 of the AUX device 15 are connected to the data input / output terminals 10b and 15b, respectively, as described above.
Performs input / output operation of 8 control data to each VR
By controlling the circuits 12 and 16, each volume level (hereinafter,
VR level) can be set, this microcomputer
The operations 13 and 18 will be described with reference to the flowchart of FIG.

Now, when the connection between the main device 10 and the AUX device 15 is detected, that is, when the connection time is detected including the moment of connection (step S1), the microcomputer 13 instructs the VR circuit 12 of the main device 10 to operate. Make a data transfer request for VR level setting (step S2).

There is a data transfer request (step S
3) If the microcomputer 13 detects the connection state between the main device 10 and the AUX device 15 and the AUX device 15 is connected to the main device 10 (step S4), the VR circuit 12 of the main device 10 is output without attenuation. The VR level is set so as to be (step S5), and the set VR level of the non-attenuated output is transferred to the VR circuit 12 (step S6).

On the other hand, the VR circuit 16 of the AUX device 15 has operation keys.
The user-adjusted VR level set by operating 14 is set (step S7), and this setting data is sent from the microcomputer 13 to the microcomputer 18 of the AUX device 15 via the data input / output terminals 10b and 15b. The VR level is transferred to the VR circuit 16 of the device 15 (step S8).

In this way, the VR circuit 16 is controlled by the user adjustment data transferred to the VR circuit 16 of the AUX device 15,
The output level to the speaker 19 of the UX device 15 is set,
For example, if the sound output level from the main device 10 is now too low, and the sound output level becomes lower than the set reference output level even if it is set to the user adjustment level by the VR circuit 16 of the AUX device 15 described above. It is also possible that the output level of the speaker 19 of the AUX device 15 is amplified to a set output level after being amplified by the amplifier 17 to correct the output level (step S9) and output as sound (step S10).

If the AUX device 15 is not connected to the main device 10 (step S4), the microcomputer 13 determines that the audio system is composed of only the main device 10, and the user adjustment VR by operating the operation key 14 is performed. The level is set (step S11), and this setting data is transferred to the VR circuit 12 of the main device 10 (step S12).

That is, the VR circuit 12 of the main device 10 is controlled by the VR level adjusted by the user, and a speaker (not shown) connected to the speaker output terminal 10a of the main device 10 can output a sound level set by the user. Yes (step S13).

In this way, the VR circuit 12 of the main device 10 is automatically set to the non-attenuated output, and the acoustic output arbitrarily set by the VR circuit 16 and the amplifier 17 of the AUX device 15 can be output from the speaker 19. Therefore, the user can easily set the sound output of the speaker 19 and enjoy music of good quality.

FIGS. 4 to 7 show an audio system device showing another embodiment, and FIG. 4 shows the operation of controlling each VR circuit by detecting the moment when the main device and the AUX device are connected. Functional block diagram showing the configuration, Figure 5 shows the main equipment and A
Detects the connection status with UX equipment and
It is a functional block diagram showing an operational configuration for controlling a VR circuit. FIG. 6 is a block diagram of a main part of hardware, and FIG.
Is a flowchart explaining the operation. The same parts as those in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted.

In the block diagram of the main part of FIG. 6, reference numeral 40 denotes a main device. The main device 40 has the signal source unit 11 and the VR circuit 12 as described above, and the signal source unit 11 and the VR circuit are provided. 12 is controlled by a built-in microcomputer 13.

The operation key 41 for sending an instruction to the microcomputer 13 as described above.
Is connected and this operation key 41 is set to the first mode for setting the mode.
The VR operation key 41a and the second VR operation key 41b for setting the VR level are attached. The first operation key for setting the mode is, for example, VOL, BAS, MID, TRE, BAL, FAD,
Sub modes can be sequentially selected, and the VR level when this mode is selected can be set with the second operation key.

Reference numeral 42 denotes a speaker system. The speaker system 42 comprises a subwoofer speaker 42a and a main speaker 42b. The speaker system 42 is connected to the speaker terminal 40a of the main device 40.

In the acoustic system device thus constructed, the output source signal of the signal source unit 11 of the main device 40 is the VR circuit.
The level is adjusted by 12 and supplied to the speaker system 42 from the speaker terminal 40a, and at the same time, from the sound output terminal 40b.
It is also supplied to the sound input terminal 15a of the AUX device 15,
The source signal supplied to the device 15 is level-adjusted by the VR circuit 16 and the amplifier 17 and then supplied to the speaker 19 from the speaker terminal 15c. By adjusting the level of the input source signal, the sound can be output to the speaker 19 through the amplifier 17.

In this way, the audio system device configured by connecting the main device 40 and the AUX device 15 outputs the main audio of the source signal from the speaker 19 of the AUX device 15 and outputs from the speaker system 42 of the main device 40. Subwoofer speaker
Only the subwoofer acoustic output of 42a can be output.

The main speaker level of the main acoustic output speaker 19 is adjusted by the VR circuit 16 of the AUX device 15, and the subwoofer speaker of the subwoofer acoustic output is used.
42a subwoofer level setting is VR circuit 12 of main device 40
Can be adjusted by. That is, since the main sound output and the subwoofer sound output can be independently set in level by the VR circuit 16 and the VR circuit 12, the user can obtain a good sound output that suits his / her taste.

The operation of the acoustic system device thus constructed will be described with reference to the flowchart of FIG. Main equipment
The built-in microcomputer 13 of 40 can control the VR circuits 12 and 16 by inputting / outputting each control data as necessary by connecting the microcomputer 18 with built-in AUX device 15 and the data input / output terminals 40c and 15b. it can.

The microcomputer 18 of the AUX device 15 detects the moment when the main device 40 and the AUX device 15 are connected and transfers the data to the microcomputer 13 of the main device 40. The connection time of 15 can be detected, and when the connection time is detected (step S20), the microcomputer 13 transfers the VR level for setting the predetermined output level of the subwoofer speaker to the VR circuit 12 (step S21). .

Further, the microcomputer 13 sets the VR level for setting the predetermined output level of the main speaker to the AUX device 15
To the microcomputer 18, and the microcomputer 18 sets the VR circuit 16 to the VR level of the main speaker output level (step S22).

As described above, when the AUX device 15 is connected to the main device 40, the VR circuit 12 of the main device 40 can set the subwoofer level and output the subwoofer acoustic output to the subwoofer speaker 42a. VR circuit of device 15
16 can set the main speaker level and output the main sound output from the speaker 19.

On the other hand, the microcomputer 13 detects whether the AUX device 15 is still connected to the main device 40 (step S23),
If the AUX device 15 is connected and the SUB mode is set by operating the first operation key 41a (step S24),
The subwoofer VR level is set by the operation data of the VR operation key 41b of (step S25), and the VR circuit of the main device 40 is set.
The VR level of the subwoofer level setting is transferred to 12 (step S26).

On the other hand, when the first VR operation key 41a is set to the VOL mode instead of the SUB mode ON and the second VR operation key 41b for setting the main VR level is operated (step S27), the microcomputer 13 sets the main VR level by the operation data of the second VR operation key 41b (step S28), and the microcomputer of the AUX device 15 via the data input / output terminals 40c, 15b.
The data is sent to 18, and the microcomputer 18 transfers the VR level of the main level setting to the VR circuit 16 (step S29).

That is, the subwoofer speaker 42a of the speaker system 42 connected to the main device 40 outputs the subwoofer sound output level set by the second VR operation key 41b in the SUB mode of the first operation key 41a, and outputs the AUX device. The speaker 19 connected to 15 outputs the main sound output set by the second VR operation key 41b in the VOL mode of the first operation key 41a.

If the AUX device 15 is not connected to the main device 40 (step S23), the microcomputer 13 determines that the sound system device is composed of only the main device 40, and the subwoofer sound of the main device 40 is detected. VR level setting is performed even if the SUB mode setting function of the first VR operation key 41a that sets the output is invalidated and the second operation key 41b is operated with the first VR operation key 41a set to SUB mode. Is not done.

The second operation key 41a is used to set the VR level of the main sound output when the VOL mode is set.
When the VR operation key 41b is operated (step S30), the microcomputer
13 sets the main VR level by the operation data of the second VR operation key 41b (step S31), and transfers the VR level data of the main level setting to the VR circuit 12 (step S3).
2).

That is, the speaker system 42 connected to the main device 40 can output the main sound output adjusted by the VR circuit 12.

As described above, the subwoofer acoustic output level can be automatically set by the VR circuit 12 of the main device 40 at the moment when the AUX device 15 is connected to the main device 40 as the sound system device. At the same time as outputting the subwoofer acoustic output, the main acoustic output level can be automatically output from the speaker 19 by setting the main acoustic output level in the VR circuit 16 of the AUX device 15, and the user can easily output the subwoofer speaker 42a. The output of the speaker 19 of the main sound output can be adjusted independently, and the sound output of better quality can be heard.

As described above, the audio system device (FIG. 2) in which the main device 10 and the AUX device 15 are connected, or the main device 40 and the AUX device
VR of each acoustic system device (Fig. 6) connected to device 15
Although the level setting of the circuit has been described, the function of the present invention can be applied to other acoustic system devices in which a plurality of audio devices are connected by various methods and used, and the audio system becomes more complicated and diversified. In the equipment, the application of the present invention makes it easier to handle the equipment and enjoy more effective and high quality sound output.

[0082]

As described above, the audio system device according to the present invention is connected to the main device 10 when the output signal of the VR circuit 12 is connected to the speaker 19 through the VR circuit 16 of the AUX device 15. Since the VR circuit 12 of the device 10 is automatically set to the non-attenuated output, the sound signal level supplied from the main device 10 to the AUX device 15 is supplied at a large voltage level, so there is no need to jump out on this supply transmission line. Noise of
There is an effect that the S / N can be kept large, a noise signal can be prevented from increasing by the amplifier 17, and a good S / N signal output can be obtained from the speaker 19.

If the level of the acoustic signal supplied from the main device 10 is too low despite the non-attenuated output of the VR circuit 12, the amplifier 17 of the AUX device 15 performs amplification correction to correct the speaker.
There is an effect that the output from 19 can be increased.

Further, the VR circuit 1 connected in series as described above.
It is no longer necessary to explain in detail how to handle the 2,16 to the user with a manual, etc., and the user can easily use the above-mentioned audio system at the time of connection and enjoy a higher quality audio output without being aware of it. There is also an effect that you can.

Further, when the connection between the main device 40 and the AUX device 15 or the connection state is detected, the subwoofer acoustic output is automatically controlled by the VR circuit 12 of the main device 40 without the user performing any setting operation. , The main audio output can be controlled independently by the VR circuit 16 of the AUX device 15. Therefore, like the conventional audio system device, there are two series of VR like the conventional example.
There is an effect that the circuits 61 and 62 are not required and can be configured by one VR circuit 12, and further, there is an effect that the output level of the sound system can be easily set and the user does not get lost in handling.

Further, since the VR levels of the respective VR circuits 12 and 16 can be automatically transferred and set, the main sound output and the subwoofer sound output of the sound system can be outputted more effectively and the quality can be improved. There is an effect that a good acoustic output can be obtained.

Moreover, the above-mentioned setting control function of each VR circuit 12 and 16 by the connection of the audio system has a built-in microcomputer.
It is highly dependent on software 13 and 18, and has the advantage that it can be upgraded without increasing the cost and is easy to implement.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing an operational configuration of an audio system device according to the present invention.

FIG. 2 is a block diagram of a main part showing a hardware configuration of the present invention.

FIG. 3 is a flowchart explaining the operation of the present invention.

FIG. 4 is a functional block diagram showing an operational configuration of another embodiment of the present invention.

FIG. 5 is a functional block diagram showing an operational configuration of still another embodiment of the present invention.

FIG. 6 is a block diagram of a main part showing a hardware configuration of another embodiment of the present invention.

FIG. 7 is a flowchart illustrating the operation of another embodiment of the present invention.

FIG. 8 is a block diagram of a main part showing a conventional example.

FIG. 9 is a block diagram of a main part showing another conventional example.

[Explanation of symbols]

 10 Main device 10a Speaker output terminal 10b Control data input / output terminal 11 Signal source section 12 Volume circuit (VR circuit) 13 Microcomputer (microcomputer) 14 Operation key 15 AUX device 15a Sound input terminal 15b Control data input / output terminal 15c Speaker output terminal 16 Volume circuit (VR circuit) 17 Amplifier 18 Microcomputer (microcomputer) 19 Speaker 41a First VR operation key 41b Second VR operation key 42 Speaker system 42a Subwoofer speaker 42b Main speaker

Claims (4)

[Claims] 1. A main device having a volume adjusting volume circuit whose volume level is set by operation keys, and an AUX (auxiliary) having a volume adjusting volume circuit.
In an audio system device that is connected to a device and outputs sound from a speaker connected to a speaker terminal of the AUX device, a connection detection unit that detects a connection of the AUX device connected to the main device and a connection of the AUX device are connected. A volume setting means for transferring a predetermined setting level to the volume circuit of the main device to set the volume level when it is detected is provided, and the volume circuit of the AUX device is set at the user adjustment level to output sound from the speaker. An acoustic system device having the above structure. 2. The acoustic system device according to claim 1, wherein the preset level of the volume circuit is a non-attenuated output level. 3. A main device having a volume circuit for adjusting volume and / or sound quality, an AUX device having a volume circuit for adjusting volume and / or sound quality, and the main device. A above
In an audio system device for outputting sound from a speaker connected to a speaker terminal of a UX device, a first setting means for setting the volume circuit of the main device to a predetermined subwoofer level when the connection of the AUX device is detected, Second setting means for setting the volume circuit of the AUX device to a predetermined main speaker level is provided, and a subwoofer acoustic output is performed from a speaker connected to the speaker terminal of the main device and is connected to the speaker terminal of the AUX device. A sound system device configured to output a main sound from the speaker. 4. The operation keys are provided with a first operation key for mode setting and a second operation key for volume level setting, and the volume circuit of the main device is activated when connection of the AUX device is detected. First setting means for setting a sub mode by the first operation key and setting a subwoofer volume level by the second operation key; and the AU
A second setting means for setting the volume circuit of the X device to the volume mode with the first operation key and the main volume level with the second operation key;
A disabling means for disabling the sub-mode setting function of the first operation key when the non-connection of the UX device is detected, and the volume circuit of the main device is set to the volume mode by the first operation key and the second mode is set. The sound system device according to claim 3, further comprising a third setting unit that sets a main volume level by using an operation key.