JPH07312797A - Acoustic reproducing device - Google Patents

Abstract

PURPOSE:To obtain an acoustic reproducing device with high presence without losing an external appearance of a listening room by charging the charger of a surround speaker reproducing device in the combination of a front speaker reproducing device and the surround speaker reproducing device. CONSTITUTION:When a surround speaker reproducing device 3 is combined with a front speaker reproducing device 2, power is supplied from a front connection section 13 of the reproducing device 2 to a surround connection section 20, power is supplied from the connection section 20 to a charger 19 to charge up the charger 19. In the surround speaker reproducing device 3, when a sound is outputted from a surround speaker 18, the charged charger 19 is used for a power supply and sound is outputted from the surround speaker 18 based on left and front speaker signals FR, FL received by a surround signal reception section 15 and superimposed infrared ray.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention reproduces an acoustic signal from an information recording medium on which an information signal such as an optical disc, a magneto-optical disc, a video tape or an audio tape is recorded, and a speaker is produced based on the reproduced acoustic signal. The present invention relates to an audio reproducing apparatus such as a disk reproducing apparatus, a video tape reproducing apparatus, or an audio tape reproducing apparatus that outputs audio from a device, and particularly to an audio reproducing apparatus using a surround speaker system.

[0002]

2. Description of the Related Art Today, an audio signal is reproduced from an information recording medium on which an information signal such as an optical disk, a magneto-optical disk, a video tape, or an audio tape is recorded, and sound is reproduced from a speaker based on the reproduced audio signal. Audio reproducing devices such as a disk reproducing device, a video tape reproducing device, and an audio tape reproducing device for outputting have been widely spread.

The above-mentioned sound reproducing device is required to have a high sense of presence for use in a listening room, a home theater, or the like, or in response to a request from a sound field-oriented listener.

As a method for enhancing this sense of presence, a rear speaker method in which a front speaker and a rear speaker are integrally combined with the front speaker, or a surround speaker provided separately from the front speaker is provided. Surround speaker system is known.

In the above-mentioned rear speaker system, a method of shifting the phase between the acoustic signal output from the front speaker and the acoustic signal output from the rear speaker in order to give a sense of reality, or a method of outputting from the front speaker is provided. Although a method of shifting the direction of the sound field from the direction of the sound field output from the rear speaker has been realized, it has not been possible to sufficiently enhance the sense of presence.

On the other hand, the above surround speaker system is
By arranging a surround speaker with respect to the front speaker in a direction parallel to the direction of the sound field output from the front speaker, a sound reproducing device having a sufficiently realistic sensation has been realized.

This surround speaker type sound reproducing device reproduces a sound signal from an information recording medium mounted on the sound reproducing device, and outputs sound from a front speaker based on the sound signal. It has a front speaker reproducing device and a surround speaker reproducing device which is arranged at a position distant from the front speaker reproducing device and outputs sound from a surround speaker based on the sound signal.

The acoustic signal reproducing device and the surround speaker reproducing device, which are arranged apart from each other, are connected by a signal line for transmitting an acoustic signal from the acoustic signal reproducing device to the surround speaker reproducing device.

Therefore, in a listening room in which a sound reproducing device in which the surround speaker reproducing device is connected to the front speaker reproducing device is arranged, the surround speaker reproducing device and the sound signal reproducing device which are arranged apart from each other are reproduced. There is a problem in that the devices are complicatedly connected by signal lines, and the aesthetics of the listening room is impaired.

However, in recent years, a signal line is unnecessary by wirelessly transmitting an acoustic signal from a front speaker reproducing device to a surround speaker reproducing device, and the signal line does not impair the aesthetics of the listening room, and a high sense of presence is provided. A sound reproducing device that can be played is realized.

[0011]

By the way, the acoustic signal reproducing apparatus and the surround speaker reproducing apparatus have respective distribution lines provided with plugs to be attached to the outlets provided in the power source. The front speaker reproducing device has an active method in which electric power is supplied by having an electric circuit such as an amplifier circuit, and a method in which an electric circuit to which electric power is supplied is not included. Has an electric wire.

Since the front speaker reproducing device is disposed near the audio signal reproducing device, even in the case of the active system, the outlet provided at the same position as the acoustic signal reproducing device, or from the outlet. Electric power is supplied from an outlet provided on the side of the audio signal reproducing device to which electric power is supplied. Further, the surround speaker reproducing device provided at a position distant from the audio signal reproducing device is supplied with electric power from an outlet provided near the surround speaker reproducing device.

As described above, the outlets need to be provided in two places in the listening room, one for the audio signal reproducing device and the front speaker reproducing device, and the other for the surround speaker reproducing device.

However, in general, in the listening room,
An outlet is provided in one place. For this reason, in the listening room, two outlets are obtained by branching from one outlet provided and installing outlets on the extended distribution line to add outlets.

As described above, in the listening room in which the surround speaker type sound reproducing device is provided, the signal line from the sound signal reproducing device to the surround speaker reproducing device is unnecessary, and the signal line complicates the operation. Although it was solved, there was a problem that the complexity of the distribution line still existed.

In view of the above problems, the present invention provides a signal line,
Alternatively, it is an object of the present invention to provide a sound reproduction device having a high sense of presence without damaging the aesthetics of the listening room by the distribution line.

[0017]

A sound reproducing apparatus according to the present invention reproduces an acoustic signal from an information signal recorded on a mounted recording medium and sends the reproduced acoustic signal to a signal line, And an acoustic signal reproducing device for wirelessly transmitting the acoustic signal, and a front side for the acoustic signal supplied from the signal line.
A front speaker reproducing device for outputting sound from the speaker and a charger for charging electric power are provided, and the charged electric power is supplied to the charger to output the wirelessly transmitted acoustic signal as sound from the surround speaker. A surround speaker reproducing device is provided, and the front speaker reproducing device and the surround speaker reproducing device are detachable from each other, and the charger of the surround speaker reproducing device is charged when combined with each other. .

[0018]

The sound reproducing device according to the present invention is a front speaker reproducing device, which is supplied with electric power from the same location as the sound signal reproducing device and can output sound near the sound signal reproducing device. Also, in the surround speaker playback device, sound can be output based on the acoustic signal wirelessly transmitted from the acoustic signal playback device, using the charger charged when combined with the front speaker playback device as the power source. Is.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the sound reproducing device according to the present invention will be described below with reference to FIGS.
The video disk reproducing apparatus shown in FIG. 1 is an example of the audio reproducing apparatus according to the present invention configured to wirelessly transmit an audio signal from the audio signal reproducing apparatus to the surround speaker reproducing apparatus.

The video disc reproducing apparatus shown in FIG. 1 reads an audio signal from an information signal recorded on a mounted video disc and produces an acoustic signal from the audio signal, and an audio signal reproducing apparatus 1 for producing the acoustic signal. A front speaker reproducing device 2 to which a signal is supplied by a signal line 8 and a surround speaker reproducing device 3 to which the acoustic signal is supplied by wireless transmission are provided.

The audio signal reproducing device 1 includes a signal reading section 4 for reading out an audio signal and an image signal from an information signal recorded on a video disc mounted on the video disc reproducing device.
And a front speaker signal to be acoustically output to the front speaker based on the audio signal read by the signal reading unit 4, and to be acoustically output to the surround speaker in synchronization with the front speaker signal. A surround processor 5 for generating a surround speaker signal, and a front signal amplifier circuit section 6 for amplifying the front speaker signal supplied from the surround processor 5 and sending the amplified front speaker signal to the front speaker reproducing device 2 through a signal line 8. The surround signal transmitting section 7 superimposes the surround speaker signal on infrared rays and wirelessly transmits the surround speaker signal superimposed on the infrared rays to the surround speaker reproducing apparatus 3.

In the signal reading section 4, the read audio signal is sent to the surround processor 5. In addition, the read image signal is displayed on the display device 21 such as a CRT.
And is displayed on the display device 21 in synchronization with the audio signal.

The surround processor 5 is, for example,
The audio signal read by the signal reading unit 4 is a surround signal such as an audio signal for 3-1 broadcasting for high definition.
If the speaker signal is included in advance,
It is configured to send the surround-speaker signal included in advance to the surround-signal transmitter 7 without generating the speaker signal.

The front speaker signal or the surround speaker signal sent from the surround processor 5 is called an acoustic signal.

The surround signal transmitting section 7 is provided with a laser diode, superimposes the surround speaker signal supplied from the surround processor 5 on the infrared ray radiated from the laser diode, and surrounds the infrared ray emitted from the laser diode. The speaker signal is wirelessly transmitted to the surround speaker reproducing device 3.

The acoustic signal reproducing apparatus 1 having the above-mentioned configuration is
The signal reading unit 4 reads left and right audio signals AR and AL from the audio signals read from the video disc. Based on the left and right audio signals AR and AL, the surround processor 5 determines the left and right front speaker signals FR and F.
L and left and right surround speaker signals SR, SL are generated.

The left and right front speaker signals FR,
The FL is amplified by the front signal amplification circuit unit 6 and is fed by the left and right signal lines 8R and 8L.
Sent to. Also, the surround speaker signal S
The R and SL are superposed on infrared rays by the surround signal transmitting unit 7 and wirelessly transmitted to the surround speaker reproducing device 3.

In the front speaker reproducing apparatus 2, as shown in FIG. 2, the other ends of the left and right signal lines 8R and 8L connected to the front signal amplifying circuit section 6 of the acoustic signal reproducing apparatus 1 are connected, and A front speaker terminal 9 to which a front speaker signal is supplied, a front speaker 10 which is connected to the front speaker terminal 9 and acoustically outputs a front speaker signal, and a distribution line 11 to which power is supplied from a power supply And a protection circuit 12 to which electric power is input from the distribution line 11, and a front connecting portion 13 to which electric power is supplied from the protection circuit 12.

The front speaker 10 includes two speakers that separately output the front speaker signals FR and FL, respectively.

A front connecting portion 13 is connected to the output side of the protection circuit 12, and power is supplied from the front connecting portion 13 to the surround speaker reproducing device 3.
Surround speaker playback device 3 supplied with this power
Then, the charger 19 described below is charged.

The protection circuit 12 for supplying electric power to the charger 19 of the surround / speaker reproducing apparatus 3 includes the charger 1
9, when the charging is completed, the surround speaker reproducing device 3 is separated from the front speaker reproducing device 2, or when an abnormally large current is input for some reason, the current is cut off. is doing.

The front connecting portion 13 is configured so that the surround connecting portion 20 of the surround speaker reproducing apparatus 3 can be freely attached and detached. The surround connecting section 20 is connected to the front connecting section 13 in a state where the front speaker reproducing apparatus 2 and the surround speaker reproducing apparatus 3 are combined.

In the front speaker reproducing apparatus 2 having the above structure, the surround speaker reproducing apparatus 2 is combined with the surround speaker reproducing apparatus 3 to charge the surround speaker reproducing apparatus 3 through the front connecting portion 13. Power is supplied to the charger 19, and the charger 19 is charged.

The left and right front speaker signals FR and FL sent from the acoustic signal reproducing device 1 through the left and right signal lines 8R and 8L are acoustically output from the front speaker 10 having left and right speakers.

The surround speaker reproducing apparatus 3 is shown in FIG.
As shown in, the surround signal receiving unit 1 for receiving the left and right surround speaker signals SR and SL wirelessly transmitted from the surround signal transmitting unit 7 of the acoustic signal reproducing apparatus 1.
5 and the received left and right surround speaker signals S
A surround signal demodulation circuit 16 for demodulating R and SL for acoustic output, a surround signal amplifier circuit 17 for amplifying the demodulated surround speaker signal, and a surround signal for acoustically outputting the amplified surround speaker signal. The speaker 18 and the surround signal receiving unit 1
5, the charger 19 for charging the surround signal demodulating circuit 16 and the surround signal amplifying circuit 17 with electric power
And a surround connection section 20 for supplying electric power to the charger 19.

The surround signal receiving section 15 is provided with a photodetector, and the acoustic signal reproducing apparatus 1 is provided.
The left and right front speaker signals FR and FL modulated so as to be superimposed on infrared rays by the surround signal transmitter 7 of
It is received by the photo detector.

The surround speaker 18 includes two speakers that separately output the left and right surround speaker signals FR and FL, respectively.

The surround connecting section 20 is constructed so that the front connecting section 13 of the front speaker reproducing apparatus 2 can be attached and detached. The front connecting portion 13 is connected to the surround connecting portion 20 in a state where the front speaker reproducing apparatus 2 and the surround speaker reproducing apparatus 3 are combined.

In the surround speaker reproducing apparatus 3 configured as described above, when combined with the front speaker reproducing apparatus 2, electric power is supplied from the front connecting section 13 of the front speaker reproducing apparatus 2 to the surround connecting section 20. Then, electric power is supplied to the charger 19 from the surround connection section 20, and the charger 19 is charged.

The surround speaker reproducing apparatus 3 is
When sound is output from the surround speaker 18, the charged charger 19 is used as a power source, and the surround signal receiving unit 1
Left and right front, superimposed on infrared, received in 5.
Sound is output from the surround speaker 18 based on the speaker signals FR and FL.

When the front speaker reproducing apparatus 2 and the surround speaker reproducing apparatus 3 are combined with each other, the front connecting section 13 and the surround connecting section 20 are stably connected to each other, and the front speaker reproducing apparatus 2 and the surround speaker reproducing apparatus 2 are connected. It is assumed that the speaker reproducing device 3 is formed so as to be assembled in a stable state, and for example, the concavities and convexities that can be fitted to each other are formed.

As described above, in the video disc reproducing apparatus which is an example of the audio reproducing apparatus according to the present invention, the information signal recorded on the video disc mounted in the video disc reproducing apparatus is the audio signal reproducing apparatus 1. An audio signal composed of a front speaker signal and a surround speaker signal is formed from the reproduced information signal,
The front speaker signal is sent to the signal line 8, and the surround speaker signal is superposed on infrared rays and wirelessly transmitted. The front speaker signal is acoustically output by the front speaker reproducing device 2 provided integrally with the sound signal reproducing device 1. In addition, the surround speaker signal superimposed on the infrared light is charged by the charged charger 1.
Sound is output from the surround speaker reproducing device 3 arranged at a position distant from the audio signal reproducing device 1 using 9 as a power source.

In the present embodiment, an example of a disk reproducing device is shown as the sound reproducing device, but the present invention is not limited to such a reproducing device, and a video tape reproducing device or an audio tape reproducing device is used. The same can be applied to other reproducing devices such as a device.

Further, in the present embodiment, the case where the acoustic signal reproducing unit generates the surround speaker signal and superimposes it on the infrared ray is shown, but the present invention is limited to the infrared frequency band. However, it is similarly applicable to other frequency bands.

In this embodiment, the surround
When charging the speaker playback device charger,
Although the case where the power is supplied from the speaker reproducing device is shown, the present invention is not limited to the front speaker reproducing device as the power supply source of the charger, and an acoustic signal reproducing device or a surround speaker reproducing device may be used. The same can be applied to the case where power is supplied from a power source or the like via.

[0046]

As described in detail above, according to the sound reproducing apparatus of the present invention, in the surround speaker reproducing apparatus, the charger is charged when combined with the front speaker reproducing apparatus, and this charging is performed. Using the charged charger as a power source, sound output is performed based on the sound signal wirelessly transmitted from the sound signal reproduction device, and power is supplied from the same location as the sound signal reproduction device in the front speaker reproduction device to output sound.

As described above, since the surround speaker reproducing apparatus does not have the signal line and the distribution line, the beauty of the listening room is not impaired, the mobility of the surround speaker reproducing apparatus is improved, and the surround speaker reproducing apparatus is improved. It is possible to provide a highly realistic sound reproducing device which can be easily installed in a desired place and easily obtain a desired sound field space.

When the surround speaker is not operated, the surround speaker reproducing device is set to the front
By combining it with the speaker playback device,
It is possible to provide a sound reproducing device that occupies a small area and further improves the aesthetics of the listening room.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a sound reproducing device according to the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a front speaker reproducing device and a surround speaker reproducing device of the sound reproducing device.

[Explanation of symbols]

 1 Acoustic signal reproducing device 2 Front speaker reproducing device 3 Surround speaker reproducing device 8 Signal line 11 Distribution line 13 Front connection part 19 Charger 20 Surround connection part

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area H04R 3/12 Z

Claims (1)

[Claims] 1. An acoustic signal reproducing device for reproducing an acoustic signal from an information signal recorded on a mounted recording medium, transmitting the reproduced acoustic signal to a signal line, and wirelessly transmitting the acoustic signal. , A front speaker reproducing device for acoustically outputting an audio signal supplied from the signal line from a front speaker, and a charger for charging electric power are provided. Surround that outputs the transmitted acoustic signal from a surround speaker
A speaker reproduction device, wherein the front speaker reproduction device and the surround speaker reproduction device are detachable from each other, and when combined with each other, the charger of the surround speaker reproduction device is charged. Playback device.