JPH06260995A - Control method for on-vehicle audio device - Google Patents

Abstract

PURPOSE:To allow the other passenger to enjoy a music from and to maintain the secrecy situation of the communication by muting the sound volume of the specific speaker by a sound volume adjusting means at the time of detecting the incoming call of the automobile telephone. CONSTITUTION:A main device 10 is equipped with a sound volume adjusting means which operates the mute processing of an outputted audio signal. Four speakers 20 are installed at the front right and left, and at the rear and left in a vehicle. Then, at the time of receiving the incoming call from an outside, or detecting the off-hook of a handset 30a, an automobile telephone 30 transmits a TEL interruption signal through a control line 31 to the main device 10, and the setting of an audio circuit is performed based on audio setting data preliminarily registered in a RAM 17. That is, the speaker 20 closest to a driver who performs speech of the automobile telephone 30 is muted. Therefore, a voice from the speaker 20 nearest to the passenger can not be interrupted even during the telephone. speech and the driver can maintain the secrecy state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling an on-vehicle audio device installed in a vehicle equipped with an automobile telephone.

[0002]

2. Description of the Related Art In the conventional control method for such an in-vehicle audio device, when an incoming call is received from a car telephone, a TEL interrupt signal (interrupt signal indicating that the car telephone is in communication) is detected. Then, the volume of all the speakers in the vehicle was muted to create an environment where it was easy to make telephone calls.

[0003]

However, in the above-described conventional method for controlling an on-vehicle audio device, even when there is a passenger in the vehicle in addition to the driver, information such as music from the speaker while the driver is talking on the telephone is provided. There was a problem that you could not enjoy.

Further, since all the speakers are muted during the telephone call, there is also a problem that even if the driver does not want the passenger to hear a telephone call, for example, the confidential state cannot be maintained. .

The present invention solves such a conventional problem, and other passengers can enjoy information such as music from a speaker even when a car phone call is in progress. It is an object of the present invention to provide an excellent method for controlling an on-vehicle audio device that can keep a secret state.

[0006]

In order to achieve the above object, the present invention provides an in-vehicle audio device having a plurality of speakers and a main unit having a volume adjusting means for adjusting the volume output from the speakers. The volume adjusting means mutes the volume of a specific speaker among the speakers when an incoming call of a car phone is detected.

[0007]

With the above structure, the present invention allows other passengers to enjoy information such as music from the speaker even during a telephone call of a car telephone, and can keep the conversation state of the telephone call.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1A and 1B are schematic block diagrams of an on-vehicle audio device to which the control method of the present invention is applied. In FIG. 1A, reference numeral 10 denotes a main body device installed in the vicinity of a driver's seat of a vehicle, a front panel of which has a display unit 11 for displaying a device state such as an audio mode.
Audio mode key 1 to select the audio mode
2. Audio up key 13 for increasing the set value in each selected mode, conversely audio down key 14 for decreasing the set value, and other operation keys (not shown)
Is equipped with. Although not shown in the figure, the main body device 1
Inside 0, a means for driving and playing a recording medium such as a CD or a cassette tape, a CPU as a control means, a memory for registering audio setting values in various modes, an amplifying means for amplifying an audio signal, and an audio signal for output. It is equipped with a volume adjusting means for performing mute processing.

Reference numeral 20 denotes four speakers connected to the main body device 10. The speaker 2 is installed on the front right side of the vehicle.
0a, a speaker 20b installed on the front left side, a speaker 20c installed on the rear right side of the vehicle, and a speaker 20d installed on the rear left side. Reference numeral 30 denotes a car telephone installed in the vehicle. When an incoming call is received from the outside, a TEL interrupt signal is sent to the main body device 10 by the control line 31 or wirelessly. Alternatively, the TEL interrupt signal is transmitted by the off-hook of the handset 30a of the car telephone 30, not limited to the case of the incoming call.

FIG. 1B is a block diagram showing the internal structure of the main body device 10 in FIG. 1A, and the same components are designated by the same reference numerals and their description is omitted. In this figure, 15 is a CPU for controlling the main body device 10,
6 is a ROM for storing programs, 17 is a RAM for storing data, 18 is a backup power supply for supplying auxiliary power when the main power supply (not shown) to the CPU 15 is stopped,
Reference numeral 19 is a reproduction unit for supplying audio signals to the speakers 20a to 20d.

In FIG. 2, the CPU 15 of the main body device 10 has the TEL
TEL in the first embodiment when receiving an interrupt signal
It is a flow chart which shows operation of mode audio setup.

The CPU 15 determines whether it is in the TEL mode (step S11). If it is in the TEL mode,
The data of the TEL mode audio setting value registered in advance in the RAM 17 is read (step S12). Then, based on this data, setting processing of the audio circuit in the main body device 10 is performed (step S13). The data in this case is, for example, setting data for performing mute processing by attenuating the audio signal sent to the speaker 20a on the front right side by 79 dB when the vehicle is a right-hand drive. However, when the vehicle is a left-hand drive, the setting data is for performing mute processing on the speaker 20b on the front left side. The setting data is registered in the RAM 17 as an initial value.

Therefore, the driver who makes a call on the car telephone 30 mutes the speaker closest to himself, so that if there is another fellow passenger, that fellow passenger is the closest even if a telephone call is made. The sound from the speaker will not be interrupted. Further, the driver who makes a call can also keep a secret state without being intercepted by the fellow passenger. This audio setting is held in the RAM 17 by the backup power supply 18 even when the main power supply of the main body device 10 is turned off, unless a new setting operation is performed.

Next, a second embodiment will be described with reference to FIGS.

In the second embodiment, in the initial state when the main body device 10 is powered on, all the speakers 20 are muted when the TEL mode is set, and a process corresponding to the audio setting is performed. . A feature of this second embodiment is that the audio setting in the initial state is changed to another desired audio setting.

FIG. 3 is a flow chart of the audio mode key operation in the TEL mode. TEL
In the mode, every time a fixed time, in this case, 5 seconds elapses (step S21), the audio signal processing mode is cyclically updated to volume, bass, treble, balance, fader, volume ... (Step S22). ). When the audio up key 13 and the audio up key 14 are pressed during these 5 seconds, different settings are made for each mode.

FIG. 4 is a flow chart of this setting.
Audio mode key 12, audio up key 13
(Hereinafter, referred to as "UP key" in this flowchart) and audio down key 14 (hereinafter referred to as "DOWN key" in this flowchart) CPU for performing desired audio setting
15 shows the operation.

First, it is determined whether the mode is the TEL mode (step S31), and if the mode is the TEL mode, it is determined whether the mode is the balance adjustment mode (step S32). When in the balance adjustment mode,
"BALL" as shown at 11a in FIG. 5 is displayed on the display unit 11 of the main body device 10 in FIG. 1 for 5 seconds. It is determined whether or not the UP key has been pressed during these 5 seconds (step S
33), if the UP key is pressed, the right speakers 20a and 20c are attenuated by 79 dB and the mute processing setting is executed (step S34). Furthermore, the display unit 11
"RIGHT" as shown in 11b of FIG. 5 is displayed to inform the user that the right speakers 20a and 20c have been muted.

If the UP key is not pressed in step S33, it is determined whether or not the DOWN key is pressed (step S35). If the DOWN key is pressed, the left speakers 20b and 20d are attenuated by 79 dB. And the mute processing setting is executed (step S
36), the display 11 displays "LE" as shown in 11c of FIG.
"FT" is displayed to inform the user that the left speakers 20b and 20d have been muted. On the contrary, when neither the UP key nor the DOWN key is pressed, the left speakers 20b and 20d are set to be output together.

In step S32, if the balance adjustment mode ends after 5 seconds, it is determined whether or not the fader adjustment mode is set (step S37). If the fader adjustment mode is set, 11d in FIG. 5 is displayed. The “FED” as shown is displayed for 5 seconds. During this period, it is determined whether or not the UP key has been pressed (step S38). When the UP key has been pressed, the front speakers 20a and 20a
0b is attenuated by 79 dB and the mute processing setting is executed (step S39), and "FRONT" as shown in 11e of FIG. 5 is displayed to inform the user that the front speakers 20a and 20b have been muted.

If the UP key is not pressed in step S38, it is judged whether or not the DOWN key is pressed (step S40). If the DOWN key is pressed, the rear speakers 20c and 20d are set to 79 dB. Attenuate and execute mute processing (step S4
1), "REAR" as shown in 11f of FIG. 5 is displayed to inform the user that the rear speakers 20c and 20d have been muted. On the contrary, when neither the UP key nor the DOWN key is pressed, the front and rear speakers 20a to 20d are set to be output together.

When the fader adjustment mode is finished in step S37, it is judged whether or not it is the volume adjustment mode (step S42), and when it is the volume adjustment mode, the UP key or DOWN key is pressed in response. Perform volume adjustment processing settings (step S
43). When the volume adjustment mode ends, 5
The bus adjustment mode, treble adjustment mode and cyclic mode are updated every second, and the UP key or DOW is updated.
The bus adjustment processing, the treble adjustment processing (step S44) and the processing of each mode are sequentially executed in response to the depression of the N key.

In the second embodiment, the speaker to be muted in the TEL mode is freely set according to the operation of the user, so that a desired passenger can be set according to the presence or absence of a fellow passenger or for each fellow passenger. Audio settings are possible. The audio settings once set are in RAM17
Is stored in memory and is maintained unless the backup power supply 18 of the main body device 10 is turned off.

FIG. 6 is a diagram showing a mute key 11g of a dedicated touch panel according to the third embodiment of the present invention. The mute key 11g is displayed on the display unit 11 in the TEL mode. For example, when muting the front right speaker 20a, the muting is performed by touching the FR portion. When the mute process is performed, the speaker mark 11h corresponding to the speaker 20a
Turns off. Therefore, when the user enters the TEL mode, the desired speaker can be muted with one touch. In addition, assign each speaker to the number of the preset key provided on the front panel,
The corresponding speaker may be muted by double pressing the preset key and the audio mode key.

[0026]

As is apparent from the above embodiment, the present invention is an audio device equipped with a plurality of speakers and a main body device for supplying audio signals to the speakers, and when the incoming call of a car telephone is detected, the speaker By muting the volume of a specific speaker, other passengers can enjoy information such as music from the speaker even during a mobile phone call, and the caller keeps the call confidential. It has the excellent effect of being able to.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing a configuration of vehicle-mounted audio devices according to first to third embodiments to which a control method of the present invention is applied.

FIG. 2 is a flowchart showing an operation of TEL mode audio setting in the first embodiment of the present invention.

FIG. 3 is a flowchart of audio mode key operation in a TEL mode according to the second embodiment of the present invention.

FIG. 4 is a flowchart of audio setting according to the second embodiment of the present invention.

FIG. 5 is a diagram showing a display example of a display unit in the second embodiment of the present invention.

FIG. 6 is a diagram showing mute keys on a dedicated touch panel according to a third embodiment of the present invention.

[Explanation of symbols]

 10 Main Unit 11 Display 12 Audio Mode Key 13 Audio Up Key 14 Audio Down Key 20 Speaker 30 Car Phone

Claims (2)

[Claims] 1. A method of controlling an in-vehicle audio device, comprising: a plurality of speakers; and a main unit having a volume adjusting means for adjusting the volume output from the speakers, the method comprising: The method for controlling an on-vehicle audio device, wherein the volume adjusting means mutes the volume of a specific speaker among the speakers. 2. The main body device has setting means for setting the specific speaker, and when an incoming call of a car telephone is detected, the volume adjusting means sets the speaker of the speaker set by the setting means. The method for controlling an on-vehicle audio device according to claim 1, wherein the volume is muted.