JPH0413869Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is applicable to the use of a car phone in a vehicle that is equipped with both car audio equipment such as a car radio, cassette deck, and compact disc (CD) player, and a car phone. The present invention relates to an output control device for in-vehicle audio equipment in which the volume of the audio equipment is automatically zeroed or reduced.

<Prior art> In recent years, in-vehicle audio equipment such as car radios, cassette decks, and CD players, so-called car audio, have become more powerful as user preferences coincide with improved sound quality. People are starting to listen to sounds more and more.

On the other hand, with the development of communication technology, automobile telephones are increasingly being installed in vehicles.

Generally, these audio devices and the car telephone are not associated with each other and operate independently.

<Problems to be Solved by the Invention> However, while listening to loud music using an audio device, the ringing sound of a car phone cannot be heard, resulting in a situation where a call cannot be received. Also, even if you notice that the phone is ringing and try to pick up the receiver to talk, the surrounding sounds are so loud that it is difficult to hear, and you have to hastily turn down the volume on your audio equipment. There was a problem that I had to put it back together. Similarly, trying to make a call while music was playing required a similar amount of effort.

Furthermore, when a driver operates these audio devices while driving, it is necessary to distract the driver from driving even for a short period of time, so from the viewpoint of safety, it is preferable that the number of operations is not too large.

The present invention was devised in view of the drawbacks of the prior art, and is an output control for in-vehicle audio equipment that eliminates the need to operate the audio equipment at all when receiving or making a call while the audio equipment is ringing. Its purpose is to provide equipment.

<Means for Solving the Problems> FIG. 1 is a block diagram showing an output control device for a vehicle-mounted audio device according to an embodiment of the present invention.

In the figure, 20 is a telephone device, 30 is a telephone operation detection device, 40 is an audio output control device, and 50 is an audio device.

<Operation> When the telephone device 20 is inactive, the sound output control device 40 controls the sound volume so that the volume set in the audio device 50 is output from the speaker 59.

For example, when the car radio 52 in the audio equipment 50 is being played at a high volume position, the radio sound is output from the speaker 59 at a high volume.

Here, when a telephone call is made, the telephone operation detection device 30 detects this and sends a telephone operation detection signal to the sound output control device 40. The sound output control device 40 that receives this detection signal controls the audio equipment 50 so that the radio sound is low or zero.

Therefore, the sound emitted from the speaker 59 is reduced while the telephone is ringing or during a call.

When the user hangs up the telephone and ends the call, the telephone operation detection device 30 detects this and stops outputting the telephone operation detection signal. In response to this, the sound output control device 40 controls the audio equipment 50 so that the radio sound level returns to its original level. Therefore, when the call ends, the sound from the speaker returns to normal and can be heard at a louder volume.

<Example> An example of the present invention will be described below with reference to the drawings.

In the output control device for an in-vehicle audio device shown in FIG. 1, a telephone device 20 installed indoors is connected to a car telephone antenna 10 erected outside the vehicle via an antenna signal line 79. A telephone operation detection device 30 is connected to the telephone device 20 , and an output side of this telephone operation detection device 30 is connected to an audio device 50 via an audio output control device 40 .

Further, a speaker/handset switching unit 26 provided in the telephone device 20 is connected to the audio output control device 40 via a received voice transmission line 81.

The telephone device 20 includes a transmitting/receiving section 22 that is connected to the car telephone antenna 10 and transmitting and receiving a calling signal, a dial signal, a voice signal, etc.;
2 and sent from the base station to your own station.
a telephone controller 24 that performs confirmation of the telephone number, output of a calling signal to the bell speaker 29, generation of a dialing signal, control of starting and stopping of a telephone call based on the switching of a telephone switch, setting of a telephone channel, etc.;
The speaker/handset side switching section 26 and the speaker/receiver side switching section 26
The telephone receiver 28 is connected to the telephone controller 24 via a receiver switching unit and is placed on the telephone controller 24.

The speaker/handset switching section 26 consists of a manually operated two-way switch. When the switch is turned to the A side, the telephone receiver 28 and the telegraph signal line 24A of the telephone controller 24 are connected, and the user can switch the receiver 28 to the telephone controller 24.
You can now make a call using 8, and conversely press the switch B.
When tilted to the side, the sound output control device 40 and the telephone controller 24 are connected, and the user can hear the other party's voice through the speaker 59 in the audio device 50, as will be described later.

Specifically, as shown in FIG. 2, the telephone operation detection device 30 includes a one-shot multi 31 that is connected to the call signal line 24B of the telephone controller 24 and is triggered at the rising edge of the call signal, and a one-shot multi-function device 31 that is triggered when the telephone receiver 28 is raised or lowered. Intermediate terminal E
mechanical switch 32 which is movable and outputs a high level from two contact terminals C and D.
(provided on the telephone controller 24); and
The output side of the one-shot multi 31 is connected to the S terminal (set terminal), and the C terminal of the mechanical switch 32 is connected to the R terminal (reset terminal).
-S flip-flop 33, the Q terminal of this R-S flip-flop 33, and the mechanical switch 3.
The output side of this OR circuit 34 is connected to a sound output control device 40.

The operation of this telephone operation detection device 30 will be described as follows.
When a call is received from outside, the one-shot multivibrator 31 outputs a pulse at the rising edge of the calling signal, and the R-S flip-flop 33 is set. As a result, the output of the OR circuit 34 becomes high level at the same time as the ringing tone is generated.

Even if the handset 28 is lifted up in this state, the high level output of the OR circuit 34 does not change, and when the call is finished and the handset 28 is taken down, the contact terminal C becomes high level due to contact with the intermediate terminal E connected to the + power supply. It outputs and resets the R-S flip-flop 33. As a result, the output of the OR circuit 34 becomes low level.

Also, when making a call from inside the car, use the handset 28.
When the contact terminal D is lifted up, contact terminal D is brought into contact with intermediate terminal E.
outputs a high level and is sent out from the OR circuit 34.

When the call is over and the receiver 28 is taken down, the contact with the intermediate terminal E is removed, the output of the contact terminal D becomes low level, and the output of the OR circuit 34 also becomes low level.

The output of the OR circuit 34 is sent to the audio output control device 40 and the audio equipment 50 as a telephone operation detection signal.

In addition to being configured as shown in FIG. 2, the telephone operation detection device 30 detects the telephone number etc. sent from the base station and when it is confirmed by the telephone controller 24, and outputs a high signal. level, and when the telephone controller 24 confirms that the telephone call has ended, this may be detected and the output may be set to low level.

The audio equipment 50 includes a plurality of audio equipment such as a car radio 52, a CD player 53, a cassette deck 54, and other 55 that are individually installed in the body of the vehicle, and a plurality of audio equipment that is installed on the output side of these equipment and listens to the sound of each audio equipment. A selector switch 56 that can selectively select one of the signal outputs.
and a feeder 57 consisting of resistors R1, R2, and R3 provided on the output side of this selector switch 56,
It consists of an amplifier 58 connected to the feeder, and a speaker 59 connected to the output side of the amplifier 58 and installed at a predetermined location on the rear body of the vehicle.

Audio equipment such as a car radio 52, CD player 53, and cassette deck 54 can be turned on, tuned, played, stopped, and adjusted the volume by operating keys on their front panels.

Moreover, the CD player 53 and the cassette deck 54 are
If a high level is input to the pause input terminals F and G during play, a pause operation is performed and the CD player 5
At 3, the pick-up is temporarily stopped, and at the skein and deck 54, the tape running is temporarily stopped. Then, when the pause input terminals F and G become low level, the pause is released, the movement of the optical pickup and the running of the tape are resumed, and the play is continued from the point where it was stopped.

The sound output control device 40 includes the telephone operation detection device 3
0, the collector is connected to the resistor R2 of the feeder 57 in the audio equipment 50, the switching transistor TR1 has its emitter connected to the ground, and the B contact of the speaker/handset switching section 26. Feeder 5 in the audio equipment 50
A feeder 42 consisting of resistors R4 to R6 is provided between the output terminals of 7, and a resistor R of this feeder 42
A switching transistor whose collector is connected to 5 and whose emitter is connected to ground.
TR2 and a switching transistor TR3 whose base is connected to the output side of the telephone operation detection device 30, whose collector is connected to the + power supply via a resistor, and to the base of the transistor TR2, and whose emitter is connected to ground. It consists of

Further, in the sound output control device 40, the output side of the telephone operation detection device 30 is connected to a CD player 53,
It is connected to pause input terminals F and G of the cassette deck 54.

To describe the operation of the sound output control device 40 configured in this way, while the output of the telephone operation detection device 30 is at a low level, there is no pause even when the CD player 53 or the cassette deck 54 is playing.
Also, transistor TR1 is off, transistor TR
3 is turned off, and transistor TR2 is turned on. When the transistor TR1 is turned off, the feeder 57 does not operate, and the audio signal output of one audio device selected by the selector switch 56 is sent almost unchanged to the amplifier 5.
8 and output from the speaker 59.

However, the feeder 42 is activated when the transistor TR2 is turned on, and the speaker/handset switching section 2
Even if the nozzle enters from the 6 side, it is suppressed to a small level determined by the values of the resistors R4 to R6, so there is almost no effect on the input of the amplifier 58.

On the contrary, while the output of the telephone operation detection device 30 is at a high level, the transistor TR1 is turned on.
Transistor TR3 is on, transistor TR2
is turned off, and a pause occurs when the CD player 53 and cassette deck 54 are playing.

The fader 57 operates when the transistor TR1 is turned on, and even if an audio signal is output from the audio equipment side via the changeover switch 56, the resistor R
It is lowered to a small level determined by the values 1 to R3.

At this time, since the transistor TR2 is off and the fader 42 is not operating, when a call signal is input from the speaker/handset switching section 26, it is guided almost directly to the amplifier 58 and emitted from the speaker 59.

In addition, when the resistor R2 of the feeder 57 is set to zero, when the transistor TR1 is turned on, all the acoustic signals from the audio equipment fall to the ground and are output to the speaker 5.
There will be no output from 9 and a mute will be applied.

Power is supplied from a car battery 70 to each part of the telephone device 20, telephone operation detection device 30, sound output control device 40, and audio equipment 50.

FIG. 3 shows how each in-vehicle device according to the present embodiment is installed in a vehicle, in which a car battery 70 that supplies power to each device is installed inside the bonnet and connected to a portion of the audio device 50 other than the speaker 59. An audio equipment unit 71 in which the output control device 40 is integrated is installed inside a front panel 72 inside the vehicle.
A telephone unit 73, which is an integrated telephone device 20 and a telephone operation detection device 30, is installed at a suitable location inside the vehicle, a speaker 59 is installed inside a rear tray 76 inside the vehicle, and a car telephone antenna 10 is installed outside the rear of the vehicle. .

Here, as shown in FIG.
Includes power terminal V, antenna terminal ANT, incoming audio output terminal AUX, and telephone operation detection signal output terminal TSO.
are provided, and a power supply line 7 is connected to these terminals.
8, antenna signal line 79, telephone operation detection signal line 8
0, a connector 83 at the end of one cable 82 including a received voice transmission line 81 is detachably engaged. A connector 84 is also provided at the other end of this cable 82.

Also, a power supply line 78 connected to the car battery 70, a telephone operation detection signal input terminal TS1 of the audio equipment unit 71, a telephone operation detection signal line 80 and an incoming voice transmission line 81 connected to the incoming voice input terminal IN, and a car telephone. An antenna signal line 79 connected to the antenna 10 is disposed under a lower body panel 72 inside the vehicle, and then connected to a connector 85 fixed to the lower body 74 near the telephone unit 73.

The connector 84 of the cable 82 on the telephone unit 73 side and the connector 85 are removably connected to complete the entire wiring.

In this way, the telephone unit 73 connects to the connector 83.
Alternatively, it can be taken out of the vehicle by removing 84. The telephone unit 73 includes an antenna 88 and an amplifier (not shown) as shown in FIG.
It is electrically connected to a battery unit 90 with a speaker 89 via dedicated connectors 91 and 92, and mechanically integrated as shown in FIG. It has become possible to carry it around.

Dedicated connectors 91 and 92 are connected to the telephone unit 7, respectively.
3 side and the battery unit 90 side, and by these connections, the B contact of the speaker/handset switching section 26 of the telephone unit 73 is connected to the speaker 89 via the amplifier in the battery unit 90, and the An antenna 88 is connected to the transmitting/receiving section 22 in the telephone unit 73,
Further, power is supplied from the battery unit 90 side to the telephone unit 73 side.

Therefore, the car phone can be used anywhere outside the car, increasing convenience.

Next, the operation of the sound output control device for the vehicle-mounted audio equipment shown in FIG. 1 will be explained.

Now, for example, if you are listening to the car radio 52 at a relatively high volume position and the car telephone is not operating at all, the telephone operation detection signal of the telephone operation detection device 30 is at a low level, and the above-mentioned Thus, transistors TR1 and TR2 in the sound output control device 40 are turned off, and the sound signal output from the car radio 52 is input to the amplifier 58 at almost the same level, and a loud sound is output from the speaker 59.

Here, assuming that the speaker/handset switching unit 26 has been switched to the handset side in advance, when a call is received from outside, the local station information sent from the base station is
The TEL number is confirmed by the telephone controller 24 in the telephone device 20, and a calling signal is output to the bell speaker 29 to produce a ringing tone.

On the other hand, when the telephone controller 24 issues a calling signal, the telephone operation detection device 30 detects the start of telephone operation as described above and outputs a high level signal. In response to this high level signal, a high level signal is sent to the pause input terminals F and G of the CD player 53 and cassette deck 54, and the transistors TR1 and TR2 are turned on.
Here, a CD player 53, a cassette deck 54
Since it is stopped, no pause operation will be performed.

When the transistor TR1 is turned on, the feeder 57 is activated and most of the output of the selector switch 56 is grounded via the transistor TR1, and the radio sound emitted from the speaker 59 is reduced (when the resistor R2 is zero, the radio sound is zero). ).

Therefore, the occupant can easily hear the ringing tone emitted from the bell speaker 29.

Then, the speaker/handset switching unit 26 is switched to the speaker 59 side (to the B contact side), and the receiver 28 is switched to the speaker 59 side (to the B contact side).
When you lift the phone or operate the switch on the telephone controller 24 to instruct to start a call, the telephone controller 24 will start the call, and the audio signal from the other party will be transmitted to the speaker/phone.
The sound is input to the amplifier 58 via the receiver switching unit 26 and the fader 42 which is not operating due to the transistor TR2 in the sound output control device 40 being turned off, and the voice at a predetermined volume can be heard from the speaker 59.

If the user does not wish to talk to the other party, he or she may simply hang up the receiver 28 or operate a switch provided on the telephone controller 24 to instruct the user to end the call.

When you wish to talk to the other party, you can carry out a two-way conversation by holding the handset 28 and switching the speaker/handset switching unit 26 to the handset 28 side. Since only sound is emitted, it does not interfere with calls.

Thereafter, when the call is finished and the receiver 28 is hung up, the telephone operation detection device 30 detects the end of the telephone operation and outputs a low level signal as described above.

In response to this low level signal, in the sound output control device 40, the transistor TR1 is turned off and the transistor TR2 is turned on. With the transistor TR1 turned off, the fader 57 does not work, and the output of the selector switch 56 is applied almost unchanged to the amplifier 58, and the output of the selector switch 56 is applied almost unchanged to the amplifier 58. The radio plays at a high volume.

In this way, if you receive a call while listening to an audio device at high volume, the volume of the audio device will be automatically reduced to ensure that you can hear the ringtone and not be interrupted by the audio sound of the call. When the call ends, the volume of the audio device will automatically increase to allow you to enjoy the original state.

Separately, for example, when the CD player is in the play state and is played at a high volume position, if the car phone is not operating at all, the output of the telephone operation detection device 30 is at a low level, and the sound output control device 40 The transistor TR1 is turned off and the transistor TR2 is turned on, so that the audio signal from the CD player 53 is input to the amplifier 58 at almost the same level, and a loud sound is output from the speaker 59.

Here, assuming that the speaker/handset switching unit 26 has been switched to the handset side in advance, when the handset 28 is lifted to make a call, the telephone operation detection device 30 detects this and sets the output to a high level.

Therefore, the high level signal is transmitted to the CD player 53,
The data is sent to the cassette deck 54, and in this case, the CD player 53 temporarily stops playing and enters a pause state. Therefore, there is no audio output from the speaker 59.

Further, since the transistor TR1 is turned on and the fader 57 is activated, the input to the amplifier 58 is reduced and no large noise is generated from the speaker 59.

When you make a call in this way, the speaker volume automatically decreases, making it easier to talk and
Since the progress of the play on the CD player 53 is stopped, there will be no part where the performance goes by without being listened to.

When the telephone call ends and the handset 28 is returned, the telephone operation detection device detects this and sets the output to a low level.
Then, the output to the CD player 53 becomes low level, the pause state is released, and play is resumed from the original stopped position.At the same time, the transistor TR
When the feeder 57 is turned off, the audio signal of the restarted performance is input almost unchanged to the amplifier 58 and output from the speaker 59 at the original high volume.

In this way, when you end the call, the play automatically resumes at a louder volume from the stopped playing position, so there is no need to adjust the volume back every time.

In addition to lowering the voice when making a call,
Although the explanation has been made regarding the case where the player is in a pause state, it is also possible to simply reduce the volume of the audio or to simply put the player in a pause state. Further, although the case where the voice from the other party is output from the speaker has been described above, it is of course possible to configure the voice from the other party to be output from the receiver.

<Effects of the invention> As explained above, according to the invention, when the telephone is activated while the audio equipment is operating and audio is being output from the speaker, the volume is automatically reduced, ensuring that the ringing tone is heard. can be heard.
In addition, since the volume is reduced, you can easily talk without being disturbed by the speaker sound during a call, and conversely, when the phone is finished working, the volume automatically returns to its original state, allowing you to enjoy the sound. The effort required to operate the equipment can be saved, and there is no increase in danger caused by operations during driving.

Furthermore, according to the present invention, a switching means is provided to switch the call signal line of the car phone to the receiver side and the speaker side of the audio equipment, so when the phone rings, it is possible to talk through the receiver or listen to the voice through the speaker. You can

Further, according to the present invention, since the feeder means is provided, it is possible to suppress the noise generated from the car phone side when the call signal line is connected to the receiver side. When connected to the other side, the call volume can be input directly to the speaker without being attenuated.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an output control device for an in-vehicle audio device according to an embodiment of the present invention, and FIG.
A detailed block diagram of the telephone operation detection device shown in the figure, FIG. 3 is an explanatory diagram showing the arrangement of the first system in the vehicle, and FIG. 4 is a wiring diagram showing some of the connection parts in FIG. 3. FIG. 5 is an explanatory diagram showing how to assemble the car phone when taking it out of the car. 20...Telephone device, 30...Telephone operation detection device, 40...Sound output control device, 50...Audio equipment.

Claims (1)

[Scope of Claim for Utility Model Registration] An audio device mounted on a vehicle, a car phone, a phone operation detection means for detecting the operation of the car phone, and a car phone that lowers the output sound of the audio device by detecting the operation of the car phone. a sound output control means for returning the output level to the original level upon termination of the operation; a switching means for selectively switching the call signal line of the car telephone to the receiver side and the speaker side of the audio device; Suppresses the noise generated from the car phone when
What is claimed is: 1. An output control device for a vehicle-mounted audio device, characterized in that it has a feeder means for inputting a call signal as it is to the speaker when the call signal line is connected to the speaker side of the audio device.