JP2003224631A - Audio device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an audio device which easily actualizes a handsfree function without specially using a telephone interface for bus connection. <P>SOLUTION: The audio device has: an AUX input terminal 14 which is connected to a portable telephone set 2 or external audio equipment; a microcomputer 18 which controls a source switching part 15 to select the AUX input terminal as a source once detecting a telephone interrupt signal from the portable telephone set 2; and an amplifier part 16 and a speaker part 17 which output the speech voice signal of the portable telephone set 2 as a sound through the source-selected AUX input terminal 14. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio device such as an on-vehicle audio device having a hands-free function for outputting a call voice signal from a mobile phone or the like.

[0002]

2. Description of the Related Art Conventionally, there is known an in-vehicle audio device provided with a hands-free function for outputting a call voice signal of a mobile phone as a voice. FIG. 4 is a block diagram showing a schematic configuration of the inside of a conventional vehicle-mounted audio device.

A vehicle audio device 100 shown in FIG.
Has a bus connection with a bus connection telephone interface 103 that controls the interface between the mobile phone 101 and the vehicle-mounted audio device 102 in order to have a hands-free function of outputting a call voice signal from the mobile phone 101. .

The vehicle audio system 100 is, for example, C
A CD reproducing unit 111 for reproducing D, a radio tuner unit 112 for receiving a radio broadcast, a bus input terminal 113 for connecting the bus connecting telephone interface 103 to the bus, and a C
A source switching unit 114 for selecting a source from any one of the D reproducing unit 111, the radio tuner unit 112, and the bus input terminal 113, and an amplifier unit 115 for amplifying the output signal selected by the source switching unit 114 as a source. A speaker unit 116 that outputs the amplified output signal as a voice, and a microcomputer 117 that controls the vehicle audio device 100 as a whole.
And have.

The microcomputer 117 detects a call from or to the mobile phone 101 based on a telephone interrupt signal from the telephone stand 102.

Further, when the microcomputer 117 detects a telephone interrupt signal, the microcomputer 117 sets the source switching unit 114 to the bus input terminal 11
By switching to the 3 side, the call voice signal from the mobile phone 101 is output from the speaker unit 116 via the mobile phone 101, the bus connection phone interface 103, the bus input terminal 113, the source switching unit 114, and the amplifier unit 115. It is to output.

As described above, the conventional vehicle-mounted audio device 1
According to 00, when the telephone interrupt signal is detected, the source switching unit 114 is selected as the source to the bus input terminal 113 side, whereby the mobile phone 101, the bus connection telephone interface 103, the bus input terminal 113, and the source switching unit. Since the call voice signal from the mobile phone 101 is output from the speaker unit 116 via 114 and the amplifier unit 115, the hands-free function of the mobile phone 101 can be obtained by separately using the bus connection phone interface 103. Can be realized.

[0008]

However, according to the above-described conventional vehicle-mounted audio device 100, when the telephone interrupt signal is detected, the source switching unit 114 is connected to the bus input terminal 1.
When the source is selected to the 13 side, the call voice signal from the mobile phone 101 is output as voice from the speaker unit 116. Therefore, the bus connection phone interface 103 connected to the mobile phone 101 must be separately used. In addition, the work of connecting the bus connection telephone interface 103 and the bus input terminal 113 with a bus signal line is very troublesome.

The present invention has been made in view of the above points, and it is an object of the present invention to provide an audio device that easily realizes a hands-free function without separately using a telephone interface for bus connection. is there.

[0010]

In order to achieve the above object, an audio device of the present invention detects an audio external input terminal connected to a mobile phone or an audio external device and a telephone interrupt signal from the mobile phone. Then, the source selection control means for selecting the source of the audio external input terminal and the voice output means for outputting the call voice signal of the mobile phone by voice through the audio external input terminal source selected by the source selection control means. And have.

Therefore, according to the audio apparatus of the present invention, the portable telephone is connected to the audio external input terminal,
When the telephone interrupt signal from the mobile phone is detected, the call voice signal of the mobile phone is output as voice through the external audio input terminal, so that the conventional bus connection telephone interface is not used separately. ,
The connection work between the mobile phone and the audio device can be remarkably improved.

In the audio device of the present invention, the connection between the portable telephone and the audio external input terminal is
The source selection control means has a mode setting means for setting as an external terminal telephone connection mode, and when the source selection control means detects a telephone interrupt signal from the mobile telephone, whether or not the currently set mode is the external terminal telephone connection mode. It has a mode determining means for determining whether or not, and a source selecting means for selecting the source of the external input terminal for audio when the mode determining means determines that the external terminal telephone connection mode is set.

Therefore, according to the audio device of the present invention, when the telephone interrupt signal from the portable telephone is detected and it is determined that the mode currently set is the external terminal telephone connection mode, the audio device is used. Since the source of the external input terminal is selected, it is possible to reliably select the source of the external input terminal for audio when a telephone interrupt signal is detected during the setting of the external terminal telephone connection mode.

Further, in the audio apparatus of the present invention, the volume adjusting means for adjusting the volume of the voice output means and the volume adjusting means during the voice output of the call voice signal by the voice output means. Volume setting value storage means for storing a volume as a volume setting value, and when the audio external input terminal is selected as a source in the external terminal telephone connection mode, the volume setting value stored in the volume setting value storage means Volume control means for adjusting the volume of the audio output means based on the value is provided.

Therefore, according to the audio device of the present invention, the volume adjusted during the voice output of the call voice signal is stored in the volume set value storage means as the volume set value, and the audio external device is used during the external terminal telephone connection mode. When the source of the input terminal is selected, the volume of the voice output means is adjusted based on the volume setting value stored in the volume setting value storage means. Therefore, the adjustment work for adjusting the volume of the voice output for each call Does not need

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An on-vehicle audio device showing an embodiment of an audio device of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of the inside of an in-vehicle audio device showing the present embodiment.

The on-vehicle audio apparatus 1 shown in FIG. 1 includes, for example, a CD reproducing section 11 for reproducing a CD, a radio tuner section 12 for receiving a radio broadcast, a bus input terminal 13, and a bus input terminal 13.
An external audio input terminal (hereinafter simply referred to as AUX) that is connected to the telephone stand 3 of the mobile phone 2 or an external audio device.
Input terminal) 14, a CD reproducing section 11, a radio tuner section 12, a bus input terminal 13 and an AUX input terminal 1
Source switching unit 15 for selecting any one of the four
An amplifier section 16 for amplifying the output signal whose source is selected by the source switching section 15, a speaker section 17 for outputting the amplified output signal as a sound, and a microcomputer 18 for controlling the vehicle audio apparatus 1 as a whole. is doing.

The on-vehicle audio device 1 is a mobile phone 1.
By connecting the telephone stand 3 of No. 1 and the AUX input terminal 14 to each other, a hands-free function of outputting a call voice signal from the mobile phone 11 can be realized.

The on-vehicle audio device 1 also includes a mode selection setting section 19 for selecting and setting various modes, a setting mode memory section 20 for storing the modes set by the mode selection setting section 19, and a speaker section 17. It has a volume setting section 21 for adjusting the volume of the audio output from and a volume setting value memory section 22 for storing the volume set by the volume setting section 21 as a volume setting value.

The mode set by the mode selection setting unit 19 is, for example, a telephone connection mode in which the AUX input terminal 14 is connected to the telephone stand 3 of the mobile telephone 2.
There are a UX telephone connection mode and a bus telephone connection mode which is a telephone connection mode in which a bus connection telephone interface is connected to the bus input terminal 13.

FIG. 2 shows a microcomputer 18 according to this embodiment.
It is a block diagram showing a schematic structure of an inside.

The microcomputer 18 shown in FIG. 2 is a telephone interrupt signal detector 18A for detecting a telephone interrupt signal from a mobile telephone.
When the telephone interruption signal detection unit 18A detects a telephone interruption signal, whether the currently set mode is the AUX telephone connection mode or the bus telephone connection mode based on the memory contents of the setting mode memory unit 20. And a source selection unit 18C that outputs a switching control signal so as to select the source on the AUX input terminal 14 side when the mode determination unit 18B determines that the AUX telephone connection mode is set. When the source is selected on the side of the AUX input terminal 14 in the AUX telephone connection mode, the volume of the speaker unit 17 is adjusted based on the volume setting value stored in the volume setting value memory unit 22. It has a volume controller 18D for outputting a volume adjusting signal.

If the mode selection unit 18B determines that the source selection unit 18C is in the bus telephone connection mode,
The switching control signal is output so that the source of the bus input terminal 13 is selected.

The audio device according to the claims is the vehicle audio device 1, the source selection control means is the source switching section 15 and the microcomputer 18, and the audio output means is the amplifier section 16.
Also, the speaker unit 17 and the mode determination unit are the mode determination unit 1
8B, source selection unit is source selection unit 18C, volume control unit is volume control unit 18D, mode setting unit is mode selection setting unit 19, volume adjustment unit is volume setting unit 2
1. Volume setting value storage means is a volume setting value memory unit 2.
It is equivalent to 2.

Next, the operation of the vehicle audio system according to the present embodiment will be described. FIG. 3 is a flowchart showing the processing operation of the microcomputer 18 relating to the telephone connection processing of the vehicle audio system.

The telephone connection process shown in FIG. 3 is performed by, for example, AUX.
AUX is detected when a telephone interrupt signal is detected during telephone connection mode.
This is a process of automatically selecting the source on the input terminal 14 side and storing the volume setting value when the volume is adjusted during this call.

The telephone interruption signal detection section 18A of the microcomputer 18 shown in FIG. 3 determines whether or not a telephone interruption signal is detected (step S11).

When the mode determining unit 18B of the microcomputer 18 detects a telephone interrupt signal through the telephone interrupt signal detecting unit 18A, it determines whether or not the currently set mode is the AUX telephone connection mode (step S12). .

When the mode determining unit 18B determines that the mode currently set is the AUX telephone connection mode, the source selecting unit 18C of the microcomputer 18 controls the source switching unit 15 to cause the AUX input terminal 14 to operate. The source is selected for the side (step S13).

Further, the volume control section 18D of the microcomputer 18 controls the amplifier section 16 based on the volume setting value stored in the volume setting value memory section 22 to adjust the volume of the speaker section 17 (step). S14).

Further, the volume control section 18D of the microcomputer 18 determines whether or not there is a volume setting operation through the volume setting section 21 (step S15).

When it is determined that the volume setting operation is performed, the microcomputer 18 stores the volume setting value in the volume setting value memory unit 22 based on the volume setting operation (step S16), and the volume setting value memory unit 22 In order to adjust the volume on the basis of the volume setting value stored in, the process proceeds to step S14.

If it is determined in step S12 that the currently set mode is not the AUX telephone connection mode, the mode determination unit 18B of the microcomputer 18 determines whether the currently set mode is the bus telephone connection mode. Is determined (step S17).

When the mode selection unit 18B determines that the mode currently set is the bus telephone connection mode, the source selection unit 18C of the microcomputer 18 controls the source switching unit 15 to cause the bus input terminal 13 to operate. The source is selected for the side (step S18), and the process proceeds to step S14.

If no telephone interrupt signal is detected in step S11, or if the currently set mode is not the bus telephone connection mode in step S17, this processing operation is terminated.

If there is no volume setting operation in step S15, it is determined whether the current call is disconnected (step S19). If you are currently disconnected,
This processing operation ends.

If the current call is not disconnected in step S19, the process proceeds to step S15.

According to the present embodiment, when a telephone interrupt signal is detected during the AUX telephone connection mode, the call voice signal of the mobile telephone is output as voice through the AUX input terminal 14, which is the case as in the prior art. Mobile phone 11 without using a separate bus connection telephone interface
And, the connection work between the vehicle-mounted audio device 1 can be remarkably improved.

According to the present embodiment, the volume adjusted during the voice output of the call voice signal is stored in the volume set value memory unit 22 as the volume set value, and the AUX input terminal 14 is used as the source during the AUX telephone connection mode. When selected, the volume of the amplifier section 16 is adjusted based on the volume setting value stored in the volume setting value memory section 22, so adjustment work for adjusting the volume of voice output for each call is required. do not do.

[0040]

According to the audio apparatus of the present invention configured as described above, when the mobile telephone is connected to the audio external input terminal and the telephone interrupt signal from the mobile telephone is detected, the audio external input is input. Since the call voice signal of the mobile phone is output as audio through the terminal, the connection work between the mobile phone and the audio device can be remarkably improved without separately using a conventional bus connection phone interface. You can

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration inside a vehicle audio device showing an embodiment of an audio device of the present invention.

FIG. 2 is a block diagram showing a schematic configuration inside a microcomputer of the vehicle-mounted audio device according to the present embodiment.

FIG. 3 is a flowchart showing a microcomputer processing operation relating to telephone connection processing of the vehicle-mounted audio device according to the present embodiment.

FIG. 4 is a block diagram showing a schematic configuration inside a conventional vehicle audio device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Car audio device (audio device) 2 Mobile phone 14 AUX input terminal (audio external input terminal) 15 Source switching section (source selection control means) 16 Amplifier section (audio output means) 17 Speaker section (audio output means) 18 Microcomputer (source selection control means) 18B mode determination section (mode determination means) 18C source selection section (source selection means) 18D volume control section (volume control means) 19 mode selection setting section (mode setting means) 21 volume setting section (volume 22) Volume setting value memory unit (volume setting value storage means)

Claims (3)

[Claims] 1. An audio external input terminal connected to a mobile phone or an audio external device, and source selection control means for selecting a source of the audio external input terminal when a telephone interrupt signal from the mobile phone is detected, An audio device comprising: a voice output unit for outputting a voice signal of the call of the mobile phone as a voice through an external audio input terminal whose source is selected by the source selection control unit. 2. A mode setting means for setting a connection between the mobile phone and the external input terminal for audio as an external terminal telephone connection mode, wherein the source selection control means is a telephone interrupt from the mobile phone. When a signal is detected, a mode determining unit that determines whether or not the currently set mode is the external terminal telephone connection mode; and when the mode determining unit determines that the external terminal telephone connection mode is set, the audio 2. The audio apparatus according to claim 1, further comprising a source selecting unit that selects a source of the external input terminal for use as a source. 3. A volume adjusting means for adjusting the volume of the voice output means, and a volume adjusted by the volume adjusting means is stored as a volume set value during the voice output of the call voice signal by the voice output means. Volume setting value storage means, and when the audio external input terminal is selected as a source during the external terminal telephone connection mode, the audio is output based on the volume setting value stored in the volume setting value storage means. The audio device according to claim 2, further comprising a volume control unit that adjusts the volume of the output unit.