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JP2011176581

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2011176581
An object of the present invention is to increase the degree of freedom in the configuration of an
acoustic system. A plurality of speaker devices 3 are installed for one remote controller 2. The
remote control 2 transmits a stereo signal as an audio signal. Each speaker device 3 receives the
stereo signal transmitted from the remote control 2. By operating the slide switch provided in
each speaker device 3, each speaker device 3 outputs a pattern for outputting stereo sound (right
channel sound and left channel sound), a pattern for outputting only right channel sound, and a
left channel Switch to a pattern that outputs only voice. The number of installed speaker devices
and the reproduction mode of each speaker device can be arbitrarily set by the user.
Furthermore, the arrangement of the speaker device is not particularly limited. Therefore, the
sound system can be freely configured according to the environment, the volume, the sound
quality, etc. required by the user. [Selected figure] Figure 7
Speaker apparatus, speaker system, and sound system
[0001]
The present invention relates to a speaker device, a speaker system, and an audio system.
[0002]
Generally as a method for transmitting a signal between apparatuses in an audiovisual system,
transmission by a cable connecting between apparatuses or transmission by radio is used.
[0003]
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1
For example, Japanese Patent Application Laid-Open No. 5-191348 (Patent Document 1)
discloses a remote controller connected by a cable to a VTR (Video Tape Recorder) integrated
camera.
The remote controller converts the video signal and the audio signal from the camera into an
optical signal and outputs the optical signal.
The light receiving unit receives an optical signal from the remote controller. The light receiving
unit converts the light signal into a video signal and an audio signal, and outputs the video signal
and the audio signal to a monitor television.
[0004]
Unexamined-Japanese-Patent No. 5-191348
[0005]
According to JP-A-5-191348, an audio signal output from a VTR integrated camera is reproduced
by a monitor television.
However, Japanese Patent Application Laid-Open No. 5-191348 does not particularly describe
the usage of the speaker.
[0006]
When audio is reproduced only by the speaker of the monitor television, there is a problem that
the position of the speaker is fixed. In addition, when more powerful voice or high sound quality
is required, the monitor television speaker alone may not be able to sufficiently cope with the
requirement.
[0007]
The object of the present invention is to make it possible to increase the freedom of the
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construction of an acoustic system.
[0008]
A speaker device according to an aspect of the present invention includes first and second
speakers, an input unit receiving an audio signal, a switching unit switching a reproduction mode
in reproducing an audio signal according to a switching pattern, the first and A housing that
houses the second speaker, the input unit, and the switching unit is provided.
The switching pattern is such that when the audio signal comprises a first channel signal and a
second channel signal, the first speaker reproduces the first channel signal and the second
speaker carries the second channel signal. A pattern to be reproduced, a pattern in which both
the first and second speakers reproduce the first channel signal, and a pattern in which both the
first and second speakers reproduce the second channel signal are included.
[0009]
Preferably, the speaker device further includes an amplifier housed in the housing and
amplifying an audio signal.
[0010]
Preferably, the input is configured to receive an audio signal transmitted by radio.
[0011]
Preferably, the input unit receives an audio signal sent from a transmission device that the
speaker device has previously authenticated as a transmission source to the speaker device.
[0012]
Preferably, the input unit has an input terminal for connection to a cable for transmitting an
audio signal.
[0013]
Preferably, the switching unit changes the switching pattern according to a control signal
transmitted from the remote controller.
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[0014]
Preferably, the speaker device further includes an operation unit for setting the switching pattern
by manual operation.
[0015]
A speaker system according to another aspect of the present invention includes at least one
speaker device described above, and a transmitting device for wirelessly transmitting an audio
signal output from an audio output device to the speaker device.
[0016]
An audio system according to still another aspect of the present invention includes at least one
speaker device described above, and an audio output device for outputting an audio signal to the
at least one speaker device described above.
[0017]
Preferably, the audio system further comprises a transmitter for transmitting the audio signal
output from the audio output device to the speaker device wirelessly.
[0018]
According to the present invention, it is possible to increase the degree of freedom of the
configuration of the acoustic system.
[0019]
It is the figure which showed schematic structure of the acoustic system which concerns on
Embodiment 1 of this invention.
FIG. 6 is a diagram for describing an operation unit provided in a housing of the speaker device
according to Embodiment 1;
It is the block diagram which showed the structure of the remote control shown in FIG.
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It is the block diagram which showed the structure of the speaker apparatus 3 shown in FIG.
It is a figure showing an example of use of a general active speaker.
It is the figure which showed the basic composition of the acoustic system which concerns on
Embodiment 1 of this invention.
It is a figure showing another example of composition of an acoustic system concerning
Embodiment 1 of the present invention.
It is the figure which showed the other structural example of the sound system which concerns
on Embodiment 1 of this invention.
It is a figure for demonstrating the structure for setting the reproduction | regeneration mode of
a speaker apparatus by a remote control.
It is the figure which showed the further another usage example of the acoustic system
concerning Embodiment 1 of this invention.
It is the figure which showed schematic structure of the acoustic system which concerns on
Embodiment 2 of this invention. FIG. 13 is a diagram for describing an operation unit provided in
a housing of the speaker device according to Embodiment 2; It is the block diagram which
showed the structure of the speaker apparatus 3B shown in FIG. It is a figure showing an
example of composition of an acoustic system concerning Embodiment 2 of the present
invention.
[0020]
Hereinafter, embodiments of the present invention will be described in detail with reference to
the drawings. In the drawings, the same or corresponding portions are denoted by the same
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reference characters and description thereof will not be repeated.
[0021]
First Embodiment FIG. 1 is a view showing a schematic configuration of an acoustic system
according to a first embodiment of the present invention. Referring to FIG. 1, sound system 50
includes an audio output device 1, a remote controller 2, and a speaker device 3. In this
embodiment, the remote control (hereinafter referred to as “remote control”) 2 and the
speaker device 3 constitute a speaker system.
[0022]
The audio output device 1 outputs an audio signal from the output terminal 5. The type of the
audio output device 1 is not particularly limited as long as it has a terminal for outputting an
audio signal. For example, a stereo system, a television, a personal computer, a mobile phone, a
portable music player, an IC recorder, etc. may be mentioned as an example of the audio output
device 1. In the embodiment of the present invention, the audio signal output from the output
terminal 5 is a stereo signal including a right channel signal and a left channel signal.
[0023]
The remote controller 2 has a key operation unit 6, an input terminal 7, and a wireless
transmission unit 8. The key operation unit 6 includes operation keys for the user to execute
various controls related to the speaker system. The input terminal 7 is connected to the output
terminal 5 of the audio output device 1 by the cable 4 and receives an audio signal output from
the audio output device 1. The wireless transmission unit 8 wirelessly transmits an audio signal
or the like input to the remote control 2.
[0024]
The speaker device 3 includes a housing 10, a wireless reception unit 11, an operation unit 12,
and speakers 27R and 27L. The wireless reception unit 11 is disposed inside the housing 10 and
receives a wireless signal from the remote control 2. The operation unit 12 is provided on the
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surface of the housing 10. In this embodiment, the operation unit 12 is provided on the top
surface of the housing 10, but the operation unit 12 may be provided on the side surface of the
housing 10.
[0025]
FIG. 2 is a diagram for explaining an operation unit provided in a housing of the speaker device
according to the second embodiment. Referring to FIG. 2, the operation unit 12 has a slide switch
13, input terminals 14 L and 14 R, volume buttons 15 U and 15 D, and a power button 16.
[0026]
The slide switch 13 is a switch for switching the sound reproduction mode of the speaker device
3. Referring to FIGS. 2 and 1, when the knob of slide switch 13 is in the "stereo" position, speaker
device 3 performs stereo reproduction. In this case, the speaker 27R reproduces the right
channel audio signal, and the speaker 27L reproduces the left channel audio signal. When the
knob of the slide switch 13 is at the “Lch” position, both of the speakers 27R and 27L
reproduce the left channel audio signal. When the knob of the slide switch 13 is at the “Rch”
position, both of the speakers 27R and 27L reproduce the right channel audio signal.
[0027]
The input terminals 14L and 14R are terminals for inputting a stereo audio signal from a cable.
The speaker device 3 can receive an audio signal not only by radio but also by a cable. The input
terminal 14L is a terminal for receiving a left channel audio signal, and the input terminal 14R is
a terminal for receiving a right channel audio signal.
[0028]
The volume button 15U is an operation button for raising the volume of the speakers 27R, 27L,
and the volume button 15D is an operation button for lowering the volume of the speakers 27R,
27L. The power button 16 is an operation button for turning on and off the speaker device 3.
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[0029]
FIG. 3 is a block diagram showing the configuration of the remote control shown in FIG.
Referring to FIG. 3, remote control 2 includes key operation unit 6, input terminal 7, wireless
transmission unit 8, signal processing unit 21, audio signal input unit 22, control unit 23, and
audio signal processing circuit. A transmission processing unit 25 and a power supply unit 26
are provided. The signal processing unit 21 generates a control signal according to the operation
of the key operation unit 6. The audio signal input unit 22 is an interface that receives an audio
signal via the input terminal 7.
[0030]
The audio signal processing circuit 24 performs predetermined processing (for example,
conversion from an analog signal to a digital signal) on the audio signal input to the audio signal
input unit 22. The audio signal processed by the audio signal processing circuit 24 is sent to the
transmission processing unit 25.
[0031]
The control unit 23 controls the audio signal processing circuit 24, the transmission processing
unit 25 and the like according to the control signal from the signal processing unit 21, and
generates a control signal for controlling the speaker device 3. The transmission processing unit
25 executes various processes (for example, modulation and the like) for wirelessly transmitting
the audio signal from the audio signal processing circuit 24 and the control signal from the
control unit 23. The wireless transmission unit 8 wirelessly transmits the signal sent from the
transmission processing unit 25. The power supply unit 26 supplies a power supply voltage to
each block in the remote control 2.
[0032]
FIG. 4 is a block diagram showing the configuration of the speaker device 3 shown in FIG.
Referring to FIG. 4, the speaker device 3 is a so-called active speaker and has an amplifier.
Specifically, the speaker device 3 includes the casing 10, the wireless reception unit 11, the
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operation unit 12, the power supply unit 31, the reception processing unit 32, the control unit
33, the amplifier 34, and the switching circuit 35. , Speakers 27R, 27L. The wireless reception
unit 11, the power supply unit 31, the reception processing unit 32, the control unit 33, the
amplifier 34, and the switching circuit 35 are accommodated in the housing 10. The speakers
27R and 27L are fixed to the housing 10 or incorporated in the housing 10.
[0033]
The wireless reception unit 11 receives a signal wirelessly transmitted from the remote control 2.
The reception processing unit 32 performs predetermined processing on the signal received by
the wireless reception unit 11. If the signal received by the wireless reception unit 11 is an audio
signal, the reception processing unit 32 outputs the audio signal to the amplifier 34. The
amplifier 34 amplifies the audio signal. When an audio signal is input to the input terminal of the
operation unit 12, the amplifier 34 amplifies the audio signal. That is, the speaker device 30 has
the wireless receiving unit 11 and the input terminals 14R and 14L as the input unit.
[0034]
If the signal received by the wireless reception unit 11 is a control signal, the reception
processing unit 32 outputs the control signal to the control unit 33. Control unit 33 controls on /
off of power supply unit 31 in accordance with a control signal from signal processing unit 21 or
a control signal from operation unit 12, or controls the gain of amplifier 34 to control the volume
of speakers 27R and 27L. To A control signal is input from the operation unit 12 to the control
unit 33 by operation of a switch, a button or the like of the operation unit 12.
[0035]
The slide switch 13 of the operation unit 12 outputs, to the control unit 33, a signal indicating
the position of the knob (for example, a signal whose potential changes according to the position
of the switch knob). The control unit 33 controls the switching circuit 35 based on the signal.
The switching circuit 35 is controlled by the control unit 33 to switch the output method of the
audio signal to the speakers 27R and 27L. That is, a pattern for switching the sound reproduction
mode by the speakers 27R and 27L is set by the slide switch 13. The switching circuit 35
switches the output system of the audio signal to the speakers 27R and 27L according to the
switching pattern.
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[0036]
The correspondence between the switching pattern and the output method of the switching
circuit 35 is as follows. When the knob of the slide switch 13 is in the "stereo" position, the
switching circuit 35 outputs the right channel audio signal and the left channel audio signal to
the speakers 27R and 27L, respectively. When the knob of the slide switch 13 is at the "Lch"
position, the switching circuit 35 sends the left channel audio signal to both of the speakers 27R
and 27L. When the knob of the slide switch 13 is at the position of "Rch", the switching circuit 35
sends the right channel audio signal to both the speakers 27R and 27L.
[0037]
As described above, the speaker device 3 according to the first embodiment includes the
speakers 27R and 27L, the input unit (the radio receiving unit 11 and the input terminals 14R
and 14L) for receiving the audio signal, and the switching circuit 35. There is. The switching
circuit 35 switches the reproduction mode when the speakers 27R and 27L reproduce the audio
signals (stereo signals including the right channel audio signal and the left channel audio signal)
in accordance with the switching pattern.
[0038]
According to the first embodiment, the reproduction pattern of the audio signal can be switched
by the setting on the speaker device side. This makes it possible to increase the flexibility of the
configuration of the acoustic system. In order to understand such features, first, a general active
speaker will be described, and then, an example of the configuration of an acoustic system using
the speaker device according to the first embodiment will be described.
[0039]
FIG. 5 is a view showing a use example of a general active speaker. Referring to FIG. 5, speaker
device 3A is connected to audio output device 1 by cable 4. An audio signal output from the
audio output device 1 is input to the speaker device 3A through the cable 4. The speaker device
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3A incorporates an amplifier and amplifies an audio signal input to the speaker device 3A.
However, the two speakers are fixed to reproduce the right channel audio signal and the left
channel audio signal respectively.
[0040]
FIG. 6 is a diagram showing a basic configuration of an acoustic system according to
Embodiment 1 of the present invention. Referring to FIG. 6, one speaker device 3 is installed for
one remote control 2. An audio signal output from the audio output device 1 is input to the
remote control 2 through the cable 4. The remote control 2 wirelessly transmits the audio signal
to the speaker device 3. The speaker device 3 reproduces an audio signal wirelessly sent from
the remote control 2.
[0041]
Furthermore, the remote control 2 transmits a signal for controlling the speaker device 3 to the
speaker device 3 by the operation of the user. For example, the volume of the speaker device, the
power on / off of the speaker device, and the like are controlled by the control signal sent from
the remote controller 2.
[0042]
The method for transmitting the audio signal from the remote control 2 is not particularly limited
as long as it is a method using wireless. For example, the remote control 2 may transmit an audio
signal by radio waves (including FM waves), infrared rays, or the like. Also, the communication
standard for transmitting a signal from the remote control 2 to the speaker device is not
particularly limited. For example, Bluetooth (registered trademark) can be applied to the first
embodiment as a communication standard. Also, a proprietary communication standard may be
applied.
[0043]
It is preferable to use a communication standard in which device authentication is defined, such
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11
as Bluetooth (registered trademark), for the speaker system according to the first embodiment of
the present invention. When such a communication standard is used, the remote control 2 and
the speaker device 3 perform pairing (confirmation work) for recognizing the other party. As a
result, the speaker device 3 can reproduce only the audio signal sent from the remote control
that the speaker device 3 has previously identified as the transmission source. Therefore, it is
possible to prevent the audio signal sent from both the authenticated remote controller and the
non-authentic remote controller from being mixed in the speaker device 3. In addition, it is
possible to prevent the speaker device 3 from malfunctioning by the control signal from the
remote control that is not authenticated.
[0044]
FIG. 7 is a diagram showing another configuration example of the acoustic system according to
Embodiment 1 of the present invention. Referring to FIG. 7, in this configuration example, a
plurality of speaker devices 3 are installed for one remote control 2. The remote control 2
transmits a stereo signal as an audio signal. Each speaker device 3 receives the stereo signal
transmitted from the remote control 2.
[0045]
A plurality of speaker devices 3 can be easily grouped into a speaker dedicated to the right
channel (Rch) and a speaker dedicated to the left channel (Lch) by operating the slide switch 13
provided in each speaker device 3 . Furthermore, the number of speaker devices used for
reproduction of each channel is not particularly limited.
[0046]
Therefore, the right channel dedicated speakers and the left channel dedicated speakers may be
equal in number. Further, as shown in FIG. 7, the number of speaker devices may be different
between the left and right channels. Depending on where you listen to music, it may be difficult
to hear the right channel or left channel. By adding the speaker device of the channel of the one
where it is hard to hear an audio | voice, since the volume balance can be taken by both left and
right channels, an acoustic effect can be heightened.
09-05-2019
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[0047]
FIG. 8 is a diagram showing still another configuration example of the acoustic system according
to Embodiment 1 of the present invention. Referring to FIG. 8, a plurality of speaker devices 3 are
installed for one remote control 2. In this case, one speaker device 3 is assigned to the stereo
reproduction speaker. The configuration shown in FIG. 8 differs from the configuration shown in
FIG. 7 in this point. The stereo reproduction speaker is disposed, for example, between the right
channel dedicated speaker and the left channel dedicated speaker. The configuration shown in
FIG. 8 can also enhance the acoustic effect as in the configuration of FIG. 7.
[0048]
When a plurality of speaker devices are arranged in various places, operating the slide switch
provided on the operation unit of each speaker device may be burdensome for the user. In the
first embodiment, it is also possible to set the reproduction mode of each speaker device from the
remote controller 2. However, in this case, not only the control signal for setting the switching
pattern, but also the control signal for specifying the speaker device for which the switching
pattern is to be changed are transmitted from the remote controller 2 side. Further, for
communication between the remote control 2 and the speaker device 3, a standard in which the
authentication between the devices as described above is defined is used.
[0049]
FIG. 9 is a diagram for describing a configuration for setting the reproduction mode of the
speaker device by the remote control. Referring to FIG. 9, a pair of speaker devices 3 are
arranged in front of user A and on both the left and right sides. The speaker device 3 on the right
side as viewed from the user A is set to reproduce only the right channel sound, but the speaker
device 3 on the left side as viewed from the user A is set to the stereo reproduction mode. In such
a case, when the user A operates the remote control 2, the control unit of the left speaker device
3 controls the switching circuit 35 so as to be in a reproduction mode in which only the left
channel audio signal is reproduced. As a result, since the left speaker device 3 is changed to the
left channel dedicated speaker, it is possible to save time and effort for the user A to move to the
position of the left speaker device 3. On the other hand, although the speaker apparatus on the
right side also receives the signal from the remote control 2, the speaker apparatus 3 on the right
side is different from the speaker specified by the remote control 2. Therefore, the control unit of
the right speaker device does not change the reproduction mode.
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[0050]
Furthermore, since the speaker device 3 according to the first embodiment has an amplifier and
an input terminal of an audio signal, it can be used as a general active speaker. The configuration
in this case is a configuration in which the speaker device 3A is replaced with the speaker device
3 in FIG.
[0051]
Furthermore, as shown in FIG. 10, the speaker device 3 that receives an audio signal wirelessly
from the remote control 2 may be combined with the speaker device 3 that receives an audio
signal through a cable. A cable 4A for distributing two audio signals is connected to the output
terminal of the audio output device 1, the input terminal of the remote controller 2, and the input
terminal of the speaker device 3.
[0052]
As described above, according to the first embodiment, the user can arbitrarily set the number of
installed speaker devices and the reproduction mode of each speaker device. In addition, since
each speaker device receives an audio signal from the remote controller 2 wirelessly, the
arrangement of the speaker device is not particularly limited. For example, the speaker devices
according to Embodiment 1 can be arranged at the four corners of a room. Therefore, according
to the first embodiment, the sound system can be freely constructed according to the
environment, the volume, the sound quality and the like requested by the user.
[0053]
In the above embodiment, the remote controller wirelessly transmits the audio signal and the
control signal. However, a transmitter dedicated to transmitting the audio signal and a remote
controller dedicated to transmitting the control signal may be separately provided.
[0054]
Second Embodiment The speaker apparatus according to the first embodiment is a speaker
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(active speaker) incorporating an amplifier, but the present invention can be applied to a speaker
(passive speaker) not incorporating an amplifier.
[0055]
FIG. 11 is a diagram showing a schematic configuration of an acoustic system according to
Embodiment 2 of the present invention.
Referring to FIG. 11, an audio system 60 includes a player 41, an amplifier 42, a cable 4B, and a
speaker device 3B.
The player 41 reads an audio signal from a recording medium (for example, but not limited to a
CD). The amplifier 42 amplifies the audio signal read by the player 41. The audio signal output
from the amplifier 42 is transmitted to the speaker device 3B by the cable 4B. The speaker device
3B outputs the audio signal sent by the cable 4B as an audio.
[0056]
The player 41 and the amplifier 42 correspond to devices that output audio signals. Although
shown separately from the player 41 and the amplifier 42 in FIG. 11, these may be integrated.
Also, the audio output device connected to the speaker device 3B is not particularly limited, and
another device (for example, a tuner or the like) may be provided in addition to or in place of the
player 41, for example.
[0057]
The speaker device 3B includes the housing 10, the operation unit 12, and the speakers 27R and
27L. FIG. 12 is a diagram for describing an operation unit provided in a housing of the speaker
device according to the second embodiment. Referring to FIG. 12, the operation unit 12 has a
slide switch 13 and input terminals 14L and 14R. The slide switch 13 is a switch for switching
the sound reproduction mode of the speaker device 3B. The sound reproduction mode of the
speaker device 3B has the same three modes as the sound reproduction mode of the speaker
device 3 according to the first embodiment. Therefore, the detailed description of the sound
09-05-2019
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reproduction mode of the speaker device 3B will not be repeated.
[0058]
FIG. 13 is a block diagram showing the configuration of the speaker device 3B shown in FIG.
Referring to FIG. 13, the speaker device 3B includes a housing 10, an operation unit 12, a
switching circuit 35, and speakers 27R and 27L. The function of each block is the same as the
function of the corresponding block of the speaker device 3 according to the first embodiment.
However, in the speaker device 3B, the audio signal input to the input terminals 14R and 14L is
input to the switching circuit 35. Furthermore, the switching circuit 35 switches the output
system of the audio signal to the speakers 27R and 27L by the manual operation of the slide
switch 13 of the operation unit 12. That is, the slide switch 13 sets the switching pattern by
manual operation.
[0059]
FIG. 14 is a diagram showing a configuration example of an acoustic system according to
Embodiment 2 of the present invention. Referring to FIG. 14, a cable 4C for dividing an audio
signal into two is connected to an output terminal of the amplifier 42. The two-distributed audio
signals are respectively sent to the two speaker devices 3B through the cable 4C. The two
speaker devices 3B can be used as a left channel dedicated speaker and a right channel dedicated
speaker, respectively. In addition, both of the two speaker devices 3B may be used as a stereo
reproduction speaker. Further, the number and arrangement of the speaker devices 3B are not
particularly limited.
[0060]
As in the first embodiment, according to the second embodiment, since the reproduction pattern
of the audio signal can be switched on the speaker device side, the degree of freedom in the
configuration of the sound system can be enhanced.
[0061]
It should be understood that the embodiments disclosed herein are illustrative and nonrestrictive in every respect.
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The scope of the present invention is indicated not by the above description but by the claims,
and is intended to include all the modifications within the meaning and scope equivalent to the
claims.
[0062]
DESCRIPTION OF SYMBOLS 1 audio output apparatus, 2 remote control (remote control), 3, 3A,
3B speaker apparatus, 4, 4A, 4B, 4C cable, 5 output terminal, 6 key operation part, 7, 14L, 14R
input terminal, 8 wireless transmission part Reference Numerals 10 housing 11 radio receiver 12
operation unit 13 slide switch 15D, 15U volume button 16 power button 21 signal processor 22
audio signal input unit 23, 33 control unit 24 audio signal processing circuit , 25 transmission
processing unit, 26, 31 power supply unit, 27R, 27L speaker, 32 reception processing unit, 34,
42 amplifier, 35 switching circuit, 41 player, 50, 60 sound system, A user.
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