JPH11170922A - On-vehicle audio system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freely select an acoustic source by providing an operated-object selecting means for selecting a speaker corresponding to controlled operation of a front seat operation part and a rear seat operation part from a front seat speaker and a rear seat speaker, according to operation state of an audio system. SOLUTION: When operation contents operated by a front seat operation part 161 differ from regeneration states of a front seat speaker 141, an operated object is the front seat speaker 141, and when the operation contents are same as regeneration states of the front seat speaker 141, a rear seat speaker 142 is the operated object. When operation contents operated by a rear seat operation part 162 differ from regeneration states of the rear seat speaker 142, an operated object is the rear seat speaker 142, and when the operation contents are same as regeneration states of the rear seat speaker 142, the front seat speaker 141 is the operated object. Selection or stopping of the regeneration of an acoustic source regenerated from the front and rear seat speakers 141, 142 can be freely performed by the front and rear seat operation parts 161, 162.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vehicle mounted on a vehicle,
The present invention relates to an audio system capable of reproducing an arbitrary sound source in each of front and rear seats from a plurality of sound sources such as a radio, a tape player, and a disc player.

[0002]

2. Description of the Related Art Conventionally, a vehicle is equipped with a plurality of sound sources, for example, a radio, a tape player, a disc player such as a CD / MD, etc., and separate audio signals are supplied from speakers provided for a front seat and a rear seat. An audio system for playback is employed. FIG. 3 is a configuration diagram of a conventional on-vehicle audio system. An example of an audio system in which a user can freely enjoy a radio and a television on the front seat side, freely enjoy a television on the rear seat side, and enjoy the same sound source as the front seat side. Is shown.

[0003] Reference numeral 1 denotes a front-seat audio device mounted around a front seat, and 6 denotes a rear-seat audio device mounted around a rear seat. 2 is a radio, and 3 is a TV tuner.
Reference numerals 21 and 31 denote changeover switches for selecting an output audio signal from the radio 2 and the television tuner 3, and are connected to the sound source side whose audio output is selected based on the operation of the operation unit 91 installed near the front seat by the user. State. Reference numeral 32 denotes a display of the television, which displays an image corresponding to the video signal from the television tuner 3. Reference numeral 4 denotes a power amplifier (amplifier) for amplifying audio signals from the radio 2 and the television tuner 3, and reference numeral 41 denotes a fader control for controlling a distribution amount of the audio signals to front and rear speakers. Reference numeral 5 denotes a front-seat speaker mounted on a front-seat-side door or the like.

[0004] Reference numeral 7 denotes a rear seat television tuner, which outputs a television audio signal and a video signal. 71 is a changeover switch for selecting an output signal to the rear seat speaker,
Switching is performed according to an operation of selecting a sound source to be reproduced by the operation unit 92 installed near the rear seat. Reference numeral 72 denotes a display of a television, which displays an image corresponding to a video signal from the television tuner 7. Reference numeral 73 denotes a power amplifier (amplifier) for amplifying an audio signal from the television tuner 7. Reference numeral 8 denotes a rear-seat speaker mounted on a rear-seat-side door or the like.

Next, the operation of the audio system will be described. When outputting the sound of the radio 2 on the front seat side, the changeover switch 21 is closed (the changeover switch 31 is opened).
In this case, the audio signal of the radio 2 is amplified by the amplifier 4,
The sound of the radio 2 is output from the front seat speaker 5. When outputting the sound of the TV tuner 3, the switch 31 is closed (the switch 21 is open). in this case,
The audio signal of the TV tuner 3 is amplified by the amplifier 4, and the audio of the TV tuner 3 is output from the front speaker 5.

When the sound of the front audio device is reproduced on the rear seat side, the changeover switch 71 is set to the front audio device 1.
To the side. Front audio device 1 amplified by amplifier 4
, That is, the audio signal of the radio 2 or the television tuner 3 whose reproduction is selected by the changeover switches 21 and 31 is output from the rear speaker 8. To enjoy the TV on the rear seat side, the changeover switch 71 is set to the TV tuner 7.
Switch to side. In this case, the audio signal of the TV tuner 7 is amplified by the amplifier 73, output to the rear speaker 8 via the changeover switch 71, and the sound of the TV tuner 7 is reproduced from the rear speaker 8. When the audio signal of the front audio device 1 is output from the rear speaker 8, the volume of the audio signal is controlled by the fader control 41, and audio is output from the front speaker 5 and the rear speaker 8 throughout the vehicle interior. System. The fader control 41 in this case is operated and controlled by the operation unit 91 on the front seat side.

[0007]

In such a conventional audio system, the rear seat can only select the sound of the same sound source as the front seat or the sound of the TV for the rear seat. Therefore, there is a problem that the audio system has a very low degree of freedom such that the sound source of the audio source of the front seat audio device not selected on the front seat side cannot be heard. In addition, if the front and rear seats have completely independent audio systems, the degree of freedom in selecting the sound source will be widened, but it is necessary to have each sound source on both the front and rear seats, which is very expensive. There is.

An object of the present invention is to solve the above problems.

[0009]

SUMMARY OF THE INVENTION The present invention achieves the above object, and comprises a plurality of sound sources for outputting sound signals; a front speaker provided for reproduction in a front seat; An in-vehicle audio system that includes a rear-speaker installed for reproduction, selects a signal from the acoustic source, and outputs the signal to the front-seat speaker and the rear-seat speaker; A front-seat operation unit for operating the audio system, a rear-seat operation unit for operating the audio system, and the front-seat operation unit according to the operation state of the audio system. And an operation target selecting means for selecting a speaker corresponding to an operation target of operation of the rear seat operation unit from the front seat speaker and the rear seat speaker.

[0010] When the operation content operated by the front-seat operation section is different from the control state related to the front-seat speaker, the operation-object selection means sets the control object to the front-seat speaker, and controls the front-seat operation. The operation contents operated by the
When the control state is the same as the front-seat speaker, the control target is the rear-seat speaker. Further, when the operation content operated by the rear-seat operation unit is different from the control state related to the rear-seat speaker, the operation target selection unit sets the control target to the rear-seat speaker and operates the rear-seat operation unit. When the content of the operation performed is the same as the control state related to the rear speaker, the control target is the front speaker.

Further, the operation content is a selection content of the sound source to be reproduced from a speaker.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a vehicle-mounted audio system according to an embodiment of the present invention. In this embodiment, the audio system will be described using two sound sources, a radio and a disc player. However, the same operation is performed even when three or more sound sources such as a tape player, a disc player such as a CD / MD, or a television are used. It is possible to do.

Reference numeral 11 denotes a radio as a sound source, and reference numeral 12 denotes a disc player, each having two audio output terminals for front and rear seats, and each of which can output an audio signal independently. Reference numeral 111 denotes a radio signal switch including a relay or the like for disconnecting (turning on / off) an audio signal of the radio 11 output to the front seat side and 112 to the rear seat side. 121 is a disk player 12 for outputting to the front seat side and 122 is for outputting to the rear seat side.
Is a disk signal switch composed of a relay or the like that cuts off the audio signal. Reference numeral 131 denotes a power amplifier (amplifier) for a front seat reproduced sound, and the radio 1 input via the radio signal switch 111 or the disc signal switch 121.
1 or the audio signal from the disc player 12 is amplified. Reference numeral 132 denotes a power amplifier (amplifier) for rear-seat reproduction sound, which amplifies an audio signal of the radio 11 or the disc player 12 input via the radio signal switch 112 or the disc signal switch 122. 141 is a speaker installed for the front seat, 142 is a speaker installed for the rear seat, and reproduces an output signal of the amplifier 131 or 132 as a sound. One is attached.

Reference numeral 151 denotes a controller for a front seat, and 152 denotes a controller for a rear seat. Reference numeral 161 denotes an operation unit for a front seat, and 162 denotes an operation unit for a rear seat. Control signals are transmitted through a communication network 18 constituted by a bus connection or the like according to the contents of the operation. , 121 and 122. Each of the front-seat operation unit 161 and the rear-seat operation unit 162 is provided with various operation switches such as a selection switch for selecting an object to be controlled.
1 switch for operating the reproduction of the audio signal), a disk switch for selecting the reproduction of the disk player 12 (a switch for operating the audio signal of the disk player 12), and selection of whether to reproduce the audio signal. Switch (a switch operated to stop reproduction of an audio signal) is provided. 171
Is a display for the front seat, and 172 is a display for the rear seat, and displays a sound source selection state for the front and rear speakers 141 and 142, and is constituted by a liquid crystal display or the like. When a TV tuner is used as the sound source, a TV display can be used as a display.

Next, the operation of the audio system will be described. When the operation content operated by the front seat operation unit 161 is different from the reproduction state of the front seat speaker 141, the operation target is the front seat speaker 141, and the front seat speaker 141 is used.
When the playback state is the same, the rear speaker 142 is an operation target. When the operation content of the rear-seat operation unit 162 is different from the reproduction state of the rear-seat speaker 142, the operation target is the rear-seat speaker 141. The speaker 141 is an operation target.

Next, each operation state will be specifically described. First, the operation by the front seat operation section 161 will be described. (1) When the radio signal switch 111 and the disc signal switch 121 are off and the audio signal is not being reproduced from the front seat speaker 141, when the radio switch of the front seat operation unit 161 is operated, the radio signal switch 111 is turned on. The audio signal of the radio 11 is the front speaker 141
Will be played more.

(2) When the radio signal switch 111 and the disc signal switch 121 are in the off state, the front speaker 141
When no audio signal is being reproduced, the front seat operation unit 16
When the disc switch 1 is operated, the disc signal switch 121 is turned on, and the audio signal of the disc player 12 is reproduced from the front speaker 141. (3) When an audio signal of the radio 11 is being reproduced from the front speaker 141 and the disconnection switch of the operation unit 161 for the front seat is operated, the radio signal switch 111 is turned off and the reproduction of the radio 11 is interrupted. .

(4) Radio 11 from front seat speaker 141
When the audio switch of the front seat operation unit 161 is operated while the audio signal of
Reference numeral 11 denotes an off state, the disk signal switch 121 is turned on, and reproduction of the radio 11 is interrupted, and the audio signal of the disk player 12 is reproduced from the front speaker 141.

(5) When the sound signal of the disc player 12 is being reproduced from the front speaker 141, when the disconnection switch of the front seat operation section 161 is operated, the disc signal switch 121 is turned off, and the disc player 12 is turned off. Playback is interrupted. (6) When the audio signal of the disc player 12 is being reproduced from the front speaker 141, the disc signal switch 121 is operated by operating the radio switch of the front seat operation unit 161.
Is off, the radio signal switch 111 is on, and the reproduction of the disc player 12 is interrupted.
Is reproduced from the front speaker 141.

(7) When the radio signal switch 111 and the disc signal switch 121 are off and the radio signal switch 112 or the disc signal switch 122 is on, that is, there is no output from the front speaker 141 and the rear speaker 142 When the audio signal of the radio 11 or the disc player 12 is being reproduced from the
When the disconnection switch 1 is operated, the radio signal switch 11
2. Both the disk signal switch 122 is turned off, the front speaker 141 has no output as it is, and the reproduction of the rear speaker 142 is also interrupted.

(8) Radio 11 from front speaker 141
Whether the audio signal of the disc player 12 is being reproduced from the rear speaker 142,
Alternatively, when there is no output, when the radio switch of the front seat operation unit 161 is operated, the radio signal switch 112 is turned on (the disc signal switch 122 is turned off),
The audio signal of the radio 11 is reproduced from the rear speaker 142, and the radio 1 is reproduced as it is from the front speaker 141.
1 is reproduced.

(9) Whether the audio signal of the disc player 12 is reproduced from the front speaker 141 and the audio signal of the radio 11 is reproduced from the rear speaker 142
Alternatively, when there is no output, when the disk switch of the front seat operation section 161 is operated, the disk signal switch 122 is turned on (the radio signal switch 112 is turned off), and the audio signal of the disk player 12 is reproduced from the rear speaker 142. The sound signal of the disc player 12 is reproduced from the front speaker 141 as it is.

The display 171 of the front-seat controller 151 displays the sound source selection state of the front and rear speakers 141 and 142, and the front and rear speakers 141 and 142 are displayed from the front seat.
Can be checked. Next, the operation of the rear seat operation unit 162 will be described. The operation of the rear-seat operation unit 162 is performed in the same manner as the front-seat operation unit 161, but the radio signal switches 111 (right) and 112 (left) for connecting and disconnecting two systems of audio signals provided for the front and rear seats. ) Or disk signal switches 121 (right), 122 (left)
To the left and right, and the front and rear speakers 141,
142 is different in that it operates in reverse.

(1) The rear speaker 142 when the radio signal switch 112 and the disc signal switch 122 are off.
When no audio signal is being reproduced, the rear seat operating section 16
When the radio switch 2 is operated, the radio signal switch 1
12 is turned on, and the audio signal of the radio 11 is reproduced from the rear speaker 142. (2) When the radio signal switch 112 and the disc signal switch 122 are off and no audio signal is being reproduced from the rear seat speaker 142, operating the disc switch of the rear seat operation unit 162 turns the disc signal switch 122 on. The audio signal of the disc player 12 is reproduced from the rear speaker 142.

(3) The radio 11 from the rear speaker 142
When the disconnection switch of the rear-seat operation unit 162 is operated while the audio signal is reproduced, the radio signal switch 112 is turned off, and the reproduction of the radio 11 is interrupted. (4) When the audio signal of the radio 11 is being reproduced from the rear speaker 142, when the disk switch of the operation unit 162 for the rear seat is operated, the radio signal switch 112 is turned off, the disk signal switch 122 is turned on, and the radio 11 is turned on. Is interrupted, and the audio signal of the disc player 12 is reproduced from the rear speaker 142.

(5) When the sound signal of the disc player 12 is being reproduced from the rear speaker 142, when the disconnection switch of the rear seat operation section 162 is operated, the disc signal switch 122 is turned off, and the disc player 12 is turned off. Playback is interrupted. (6) When the audio signal of the disc player 12 is being reproduced from the rear speaker 142 and the radio switch of the operation unit 162 for the rear seat is operated, the disc signal switch 122 is operated.
Is in the off state, the radio signal switch 112 is in the on state, and the reproduction of the disc player 12 is interrupted.
1 is reproduced from the rear speaker 142.

(7) When the radio signal switch 112 and the disk signal switch 122 are off and the radio signal switch 111 or the disk signal switch 121 is on, that is, there is no output from the rear speaker 142 and the front speaker 141 When the audio signal of the radio 11 or the disc player 12 is being reproduced from the
When the disconnect switch 2 is operated, the radio signal switch 1
11. Both the disk signal switch 121 is turned off, the rear speaker 142 has no output as it is, and the reproduction of the front speaker 141 is also interrupted.

(8) Radio 11 from rear speaker 142
When the audio signal of the disc player 12 is being reproduced from the front speaker 141 or the audio signal of the disc player 12 is not being output or there is no output, when the radio switch of the operation unit 162 for the rear seat is operated, the radio signal switch 111 is turned on. (The disc signal switch 121 is turned off), the audio signal of the radio 11 is reproduced from the front speaker 141, and the radio 1 is output from the rear speaker 142 as it is.
1 is reproduced.

(9) When the audio signal of the disk player 12 is being reproduced from the rear speaker 142 and the audio signal of the radio 11 is being reproduced or there is no output from the front speaker 141, the rear seat operating section 162 Is operated, the disk signal switch 121 is turned on (the radio signal switch 111 is turned off),
The audio signal of the disc player 12 is reproduced from the front speaker 141, and the audio signal of the disc player 12 is reproduced from the rear speaker 142 as is.

The display 172 of the controller 152 for the rear seat displays the sound source selection state of the front and rear speakers 141 and 142, and from the rear seat to the front and rear speakers 141 and 142.
Can be checked. As described above, in the in-vehicle audio system according to the present embodiment, the front and rear seat speakers 1 can be freely controlled by the front and rear seat operation units 161 and 162.
It is possible to select the sound source to be reproduced or stop the reproduction from the sound sources 41 and 142, and the sound source can be shared, so that an audio system with high functionality can be realized at low cost.

FIG. 2 is a block diagram of a vehicle audio system according to another embodiment of the present invention. The same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. 1
1 is a radio as a sound source, and 12 is a disc player. 113 is a radio 11 and 123 is a disc player 1
2 is a radio and disk signal switch including a relay and the like provided on the output side of 2 for connecting and disconnecting an audio signal. The radio signal switch 113 and the disk signal switch 123 can be omitted (direct connection state). Reference numeral 19 denotes a selector circuit for freely switching and outputting audio signals of the radio 11 and the disc player 12 to the front-seat amplifier 131 and the rear-seat amplifier 132 in accordance with the operation of the operation unit 161 or 162. It can be constituted by a switching transistor or the like. The operation of the present embodiment is the same as that of the audio system of FIG. 1, and the radio signal switch 113, the disc signal switch 123, and the selector circuit 19 are controlled in accordance with the operation of the operation unit 161 or 162 ( The operation state of the audio system and the operation selected by operating the operation units 161 and 162 are the same).

As described above, in the vehicle-mounted audio system of the present embodiment, the front and rear seat speakers 14 can be freely controlled by the selector circuit 19 from each of the front and rear seat operating units 161 and 162.
Since it is possible to select an audio source to be reproduced or stop the reproduction from the audio system 1 or 142, an audio system with high operability can be realized at a low cost by generally adding a selector circuit 19 to the audio system.

[0033]

As described above in detail, according to the vehicle audio system of the present invention, the audio device serving as the sound source does not have an independent device, and the front and rear seats have the same or different sound sources. Since the user can listen to the sound and can freely select each sound source while checking the reproduction state of the front and rear seats, a very inexpensive and highly functional audio system can be realized.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an in-vehicle audio system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a vehicle-mounted audio system according to another embodiment of the present invention.

FIG. 3 is a configuration diagram of a conventional in-vehicle audio system.

[Explanation of symbols]

 11: Radio 111: Radio signal switch for front seat 112: Radio signal switch for rear seat 12: Disc player 121: Disc signal switch for front seat 122: Rear seat Disc signal switch 131: front seat amplifier 132: rear seat amplifier 141: front seat speaker 142: rear seat speaker 151: front seat controller 152: rear seat Controller 161: Front-seat operation unit 162: Rear-seat operation unit 171: Front-seat display unit 172: Rear-seat display unit 18: Communication network

Claims (4)

[Claims] 1. A sound source comprising: a plurality of sound sources for outputting sound signals; a front speaker provided for reproduction in a front seat; and a rear speaker provided for reproduction in a rear seat. A front-seat operation unit provided for the front seat and for operating the audio system, wherein the front-seat operation unit is provided for the front seat and the rear-seat. And an operation unit for a rear seat for operating the audio system, and corresponding to a control target of operation of the operation unit for the front seat and the operation unit for the rear seat according to an operation state of the audio system. An in-vehicle audio system comprising: an operation target selection unit that selects a speaker from the front seat speaker and the rear seat speaker. 2. The method according to claim 1, wherein the operation target selection unit sets the control target to a front-seat speaker when an operation content operated by the front-seat operation unit is different from a control state related to the front-seat speaker. 2. The in-vehicle audio system according to claim 1, wherein when the operation content operated by the unit is the same as the control state related to the front speaker, the control target is the rear speaker. 3. The operation target selecting means, when an operation content operated by the rear-seat operation unit is different from a control state related to the rear-seat speaker, sets the control target to a rear-seat speaker; 3. The in-vehicle audio system according to claim 1, wherein when the operation content operated by the unit is the same as the control state regarding the rear speaker, the control target is the front speaker. 4. The operation content is a selection content of the sound source to be reproduced from a speaker.
Alternatively, the in-vehicle audio system according to claim 3.