JPH11146043A - Automatic car audio control system and method during use of mobile phone - Google Patents

Abstract

(57) [Summary] [Problem] To control a car audio automatic control system during use of a mobile phone so that a mute function of the audio device is automatically operated when a mobile phone is called or answered during operation of a vehicle audio device. And a method thereof. A system and method for automatically controlling a car audio during use of a mobile phone enables a busy signal to be communicated with a mobile phone that generates a standby signal while the mobile phone is connected to the mobile phone without picking up the mobile phone. Hands-free equipment,
Transmitting a busy signal and a standby signal to the hands-free device, transmitting the busy signal and the standby signal to the car audio device, and transmitting the bus signal to the car audio device. Transmitting a signal and a standby signal to a mute function control circuit so that the mute function is operated when a busy signal is generated, and the mute function is released when the standby signal is generated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle system for vehicles, and more particularly to an automatic car audio control during use of a portable telephone which can automatically operate a mute function of the car audio device when the portable telephone is used while listening to car audio. About the system.

[0002]

2. Description of the Related Art In recent years, audio devices are basically mounted on vehicles, and a large number of people often carry a mobile phone and receive a telephone call while traveling or make a telephone call in many cases. ing.

[0003]

However, when the audio device of the vehicle is turned on and the volume is high, when a call is received from another person or a call is made to another person, the driver may reduce the speaker volume of the audio device. Alternatively, there is a problem in that the user must press the off switch of the audio device and then talk using the mobile phone. However, mute (mut
e) There is a function to prevent sound from being heard through the speaker. There is a handfree device that allows a user to talk safely without taking a mobile phone while traveling in a vehicle. Therefore, the present invention enables the mute function of the audio device to be automatically operated when the hands-free device operates when a call is received or when a call is made.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a portable telephone using a mobile phone which automatically activates a mute function of an audio device through a hands-free device when a mobile phone is called or answered during operation of an audio device of the vehicle. Provide an automatic audio control system. Another object of the present invention is to provide an automatic car audio control during use of a mobile phone so that a mute function of the audio device can be automatically operated through a hands-free device when a mobile phone is called or answered while the audio device of the vehicle is operating. Provide a way.

[0005]

According to the present invention, there is provided an automatic car audio in-use car audio control system according to the present invention which generates a busy signal and generates a standby signal. A hand-free device connected to the mobile phone so that a call can be made without picking up a telephone; first transmission means for receiving and transmitting a busy signal and a standby signal from the mobile phone through the hand-free device; and a mute function control circuit. A car audio device, a cable for transmitting a signal from the first transmission means to a car audio system, a bus signal and a standby signal transmitted from the cable, and transmitting the received signal to the mute function control circuit. And a mute function of the car audio device while the mobile phone is in use by operating the first transmission means. And it features.

According to another aspect of the present invention, there is provided a method for automatically controlling a car audio during use of a portable telephone, the method comprising: generating a busy signal and generating a standby signal;
A method for automatically controlling car audio during use of a mobile phone in a system including a hands-free device connected to the mobile phone so that a call can be made without picking up the phone, and a car audio device including a mute function control circuit;
Transmitting the busy signal and the standby signal to the hands-free device; transmitting the busy signal and the standby signal to the car audio device; and outputting the busy signals and the standby signal input to the car audio device. Transmitting a signal to the mute function control circuit so that the mute function is operated when a busy signal is generated, and the mute function is released when a standby signal is generated.

[0007]

Embodiments of the present invention will be described below. FIG. 1 is a block diagram of an automatic car audio control system during use of a mobile phone according to the present invention. The hands-free system 200 includes a hands-free device 20, a photo coupler 22, and a resistor R. That is, a photo coupler device is added to the basic hands-free device 20. The car audio device 300 includes a photocoupler 30, a mute function control circuit 32, an amplifier 34, and a speaker 36. The cable 400 is for signal transmission between the hands-free system 200 and the car audio device 300.

The operation of the system shown in FIG. 1 will be described. When a call is made to the mobile phone 100 or the driver intends to make a telephone call while traveling, a busy signal being used is transmitted from the mobile phone 100 to the hands-free system 200. The busy signal transmitted to the hands-free system 200 is output through the photocoupler 22, and the signal is connected to the input terminal of the car audio device 300 through another cable 400 drawn from the hands-free system 200. Then, the busy signal transmitted from the photocoupler 30 connected to the input terminal of the car audio device 300 is transmitted to the mute function control circuit 32 of the car audio device, and the mute function control circuit 32 The mute function is operated using the function control circuit as it is. Therefore, sound is prevented from going outside through the amplifier 34 and the speaker. The mute function circuit of the car audio device and the function of outputting a busy signal from a mobile phone use the conventional technology as it is.

The operation of the present invention will be described in detail in three stages before, during and after the operation. Before the operation, the volume of the car audio device 300 is output in a state set by the driver, since the mobile phone 100 is not talking.

[0010] During operation, a call is made to the mobile phone 100 during driving, or the mobile phone 100
Press the SEND button. Next, the busy signal from the mobile phone 100 is transmitted to the hands-free system 2.
00 and the transmitted busy signal is output through the photocoupler 22. Next, the output busy signal is connected to the input terminal of the car audio device 300 through another cable 400 and is again connected to the photo coupler 300.
The busy signal is transmitted to the mute function control circuit 32 through the. Finally, the mute function control circuit 32 that receives and transmits the busy signal automatically operates the mute function to adjust the volume of the car audio device downward to a level that does not interfere with a call.

When the call after the operation is completed, a busy signal is prepared.
(ready) signal, and this signal is transmitted to the mute function control circuit 32 of the car audio device via the same path as the busy signal transmission during operation. The mute function control circuit that has received the preparation signal is restored to the volume before the operation of the mute function. Therefore, the system and method for controlling car audio during use of a mobile phone according to the present invention transmits a busy signal generated during a mobile phone call to a mute function control circuit of a car audio device so that a mute function is operated.
When the call is completed, the standby signal is transmitted to the mute function control circuit of the car audio device so that the original volume is restored, so that the mute function can be operated without having to take another hand during driving. .

[0012]

According to the present invention, a car audio automatic control system and method for a portable telephone during use is provided so that a mute function of a car audio device can be automatically operated without a driver taking unnecessary steps during a call. This has the effect of reducing the risk of accidents as well as comfortable calls.

[Brief description of the drawings]

FIG. 1 is a block diagram of a system for operating a mute function of a car audio device during use of a mobile phone according to the present invention.

[Explanation of symbols]

 Reference Signs List 100 mobile phone 200 hands-free system 300 car audio device 400 cable

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04M 1/60 H04B 7/26 109G

Claims (4)

[Claims] 1. A mobile phone that generates a busy signal during use and generates a standby signal during standby, a hands-free device that is connected to the mobile phone so that a call can be made without picking up the phone, A first transmission unit for receiving and transmitting a busy signal and a standby signal through a hands-free device; a car audio device including a mute function control circuit; and a cable for transmitting a signal from the first transmission unit to a car audio system And first transmission means for receiving a busy signal and a standby signal transmitted from the cable and transmitting the received signal to the mute function control circuit. Automatic control system. 2. The automatic car audio control system according to claim 1, wherein the first transmission means comprises a photocoupler. 3. The automatic car audio control system according to claim 1, wherein said second transmission means comprises a photocoupler. 4. A mobile phone that generates a busy signal during use and generates a standby signal during standby, a hands-free device connected to the mobile phone to enable a call without picking up the phone, and a mute function control circuit. Transmitting the busy signal and the standby signal to the hands-free device, wherein the hands-free device transmits the busy signal and the standby signal to the hands-free device. Transmitting a busy signal and a standby signal input to the car audio device to the mute function control circuit so that a mute function is operated when a busy signal is generated, and when a standby signal is generated, Canceling the mute function. Audio automatic control method.