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JP2014096657

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DESCRIPTION JP2014096657
Abstract: In an audio device, the connection state of an external unit is reflected in control of an
internal function. An acoustic device (100) includes a housing (199), a speaker (140), a terminal
(terminal 120) provided on the housing, and an external unit (200) attached to a front terminal.
The control unit according to the specification unit (microcomputer 112, control unit 170)
specifying 300, 400, 500, 600) and the external unit specified by the specification unit is
specified, and the speaker according to the determined control content Control unit (control unit
170) that controls the [Selected figure] Figure 4
Sound equipment
[0001]
The present invention relates to acoustic devices.
[0002]
A notebook PC is known which has a mechanism for selectively mounting two detachable
speaker units, and which automatically changes audio output characteristics according to the
acoustic characteristics of the mounted speaker units (Patent Reference 1).
[0003]
JP 2008-85902 A
[0004]
09-05-2019
1
The invention described in Patent Document 1 is a notebook PC having a built-in speaker, and is
provided with two signal processing circuits which can alternatively be used for controlling an
external speaker, and the type of the attached external speaker is In response, one of the circuits
is to be activated.
According to the invention described in Patent Document 1, control of the external speaker is
performed such that sound emission suitable for the characteristics (frequency band
characteristics) of the external speaker is performed from the speaker.
On the other hand, control of the built-in speaker is independent regardless of the presence or
absence of the attachment and the type of the attached external speaker.
That is, when the external speaker is attached, in addition to the tone being normally emitted
from the built-in speaker, the tone is also emitted from the external speaker. As a result, before
and after wearing, the volume level of the sound to be reproduced changes. If the volume is
properly set for tone reproduction using only the built-in speaker, the user may feel an
unexpected change in volume or it may be time-consuming to re-designate an appropriate
volume, which is not preferable. This volume change occurs similarly even when the volume
setting is made on the assumption that the external speaker is attached. As described above, in
the related art, an internal function provided in advance in an audio device and an external
function provided by the audio device such as an external speaker connected to the audio device
can be integrally controlled. It was not.
[0005]
The present invention is intended to reflect in a control for an internal function that an external
unit has been connected or disconnected in an audio device, and to integrally control the
connected external unit and the internal function. I assume.
[0006]
The present invention, in one aspect, includes a housing, a speaker, a terminal provided on the
housing, a specifying unit for specifying an external unit attached to the terminal, and an outside
specified by the specifying unit. According to another aspect of the present invention, there is
09-05-2019
2
provided an acoustic apparatus comprising: determining a control content corresponding to a
unit; and controlling the speaker according to the determined control content.
In a preferred aspect, the control unit supplies a signal corresponding to a musical tone
reproduced by the speaker to the external unit through the terminal. In a preferable aspect, when
the external unit is an external speaker, the specification unit further specifies a characteristic of
the external speaker, and the control unit is configured to set the characteristic of the external
speaker to each of the speaker and the external speaker. Provide a corresponding acoustic signal.
In a preferred embodiment, the image processing apparatus further includes a signal processing
unit that processes the sound pressure level of the sound signal according to the sound pressure
characteristic of each speaker. In a preferred embodiment, the electronic device further includes
a signal processing unit that processes the frequency characteristic of the acoustic signal based
on the frequency characteristic of each speaker. In a preferable aspect, when specifying the
external unit, the specifying unit determines the change based on whether the change in the
electrical signal caused by the contact of the terminal satisfies a predetermined condition. And /
or a second method of making the determination by receiving an identifier from the external unit.
In a preferred aspect, the terminal includes a frame and a plurality of tumblers provided inside
the frame, and the external unit is engageable with the frame and has one or more recesses
formed therein. It has a connection part which has a flat plate upper member, The said specific
part is a position of at least any one of the said several tumblers resulting from said one or
several recessed part when the said flat plate upper member is inserted in the said frame pair
The external unit is identified based on the change of. In a preferred aspect, the apparatus
further includes an acquisition unit that acquires the characteristics of the external unit from
devices other than the external unit. In a preferred aspect, the characteristic of the speaker is
provided from the external unit via the terminal.
[0007]
According to the present invention, in an audio device, the fact that there has been connection or
disconnection of an external unit is reflected in the control of the internal function, and
integrated control of the connected external unit and internal function is performed. be able to.
[0008]
It is an external view of acoustic device 100, and (a) is a front view and (b) is a side view.
It is a detailed view of the appearance of connecting part 110, and (a) is a figure showing the
09-05-2019
3
state where an external unit is not connected and (b) showing the state where speaker unit 200
is connected as an external unit, respectively. It is a figure showing the external appearance of
the sound apparatus with which the speaker unit 200 was attached. FIG. 2 is a diagram showing
the function of the acoustic device 100. It is an example of the content memorize | stored in
apparatus information database DB1. (A) to (d) are examples of information written to the control
information table DB2. It is a figure for demonstrating the determination method of a sound
pressure level. FIG. 6 is a diagram showing the function of the speaker unit 200. It is a figure
showing the detailed structure of the connection part 110 and the connection part 250. FIG. (A)
is table DB3 and (b) is a figure showing the example of the reception data D1. It is a figure
showing the function of indicator 300. As shown in FIG. It is an external view of acoustic device
100 with which indicator 300 was attached. FIG. 7 is a diagram showing the function of an
operation knob 400. FIG. 5 is an external view of the acoustic device 100 to which the operation
knob 400 is attached. (A), (b) shows the other example of the connection part 250, (c) is a figure
showing the other example of the connection part 110. FIG. 7 is an operation example of the
acoustic device 100. It is a figure showing the function of LED lighting 500. In FIG. FIG. 6 is an
external view of the acoustic device 100 to which the LED lighting 500 is attached. FIG. 6 is a
diagram illustrating the function of a watch 600. FIG. 6 is an external view of an acoustic device
100 to which a watch 600 is attached. FIG. 6 is an external view of an acoustic device 100 to
which a speaker unit 200 and a diffuser 700 are attached.
[0009]
FIG. 1 is an external view of the acoustic device 100, where (a) is a front view and (b) is a side
view. The sound device 100 is a sound device having a function as a general sound speaker. The
acoustic device 100 includes a housing 199, a speaker unit 140, and a connection unit 110. The
housing 199 has a substantially rectangular parallelepiped shape, and the width (X direction), the
depth (Y direction), and the height (Z direction) are W, D, and H, respectively. The speaker unit
140 is fixed to the housing 199. The connection unit 110 is provided on the front of the housing
199. In addition, although the audio apparatus 100 has terminals for inputting and outputting
power and musical tones, these are omitted. The speaker unit 140 is a speaker unit made of a
voice coil, a cone, and other vibrators (all not shown), and emits an acoustic wave corresponding
to the input acoustic signal in the front direction (-Y direction). The housing 199 functions as a
member that houses a power supply, various control circuits, and the like inside, and also has a
function as an enclosure of the speaker unit. The connection unit 110 is a structure provided to
connect to an external unit.
[0010]
09-05-2019
4
FIG. 2 is a mechanical detail view of the connection portion 110, where (a) shows a state in which
the external unit is not connected and (b) shows a state in which the speaker unit 200 is
connected as an external unit. As shown to the figure (a), the connection part 110 contains the
terminal 120, the guide 121, and the nut cover 122. As shown in FIG. The terminal 120 has a
predetermined pin arrangement in one aspect, and is a terminal for electrically connecting the
acoustic device 100 and an external unit. The guide 121 and the nut cover 122 are mechanisms
for physically fixing the external unit to the acoustic device 100. The guide 121 has a cylindrical
and hollow shape, is externally threaded, and is a structure for guiding insertion of the external
unit. The position of the terminal 120 on the acoustic device 100 side and the terminal on the
external unit side are matched by the guide 121. The nut cover 122 is a ring-shaped member,
and a screw is cut in the inside. By tightening the nut cover 122, the external unit is fixed to the
acoustic device 100.
[0011]
The acoustic device 100 can alternatively be attached with a plurality of types of external units
having a predetermined attachment mechanism. FIG. 6A shows that different speaker units 200A
and 200B can be attached. The attachment mechanism will be described by taking the speaker
unit 200 as an example. The speaker unit 200 includes a main body 212, a terminal 210 and a
screw 211. The terminal 210 is for communicating an electrical signal with the acoustic device
100 by contacting the terminal 120. The screw 211 is a ring-shaped member provided on the
outer side of the main body 212, and is screwed on the outer side. The main body 212 is a main
body of a speaker unit including a vibration generator such as a voice coil and a vibrator (not
shown) such as a cone. The main body 212 may further include a diffuser, an acoustic panel or
the like that changes the characteristics of the emitted acoustic wave.
[0012]
The same figure (b) demonstrates the attachment to the sound apparatus 100 of an external unit.
First, as shown on the left of the figure, the user inserts the external unit into the guide 121, and
then turns the nut cover 122 to tighten the screw 211 of the external unit. As a result, the
terminals of the acoustic device 100 and the external unit are fixed in contact with each other.
[0013]
09-05-2019
5
When the acoustic device 100 is attached to the speaker unit 200, the appearance is as shown in
FIG. In addition, although the speaker unit 140, 200 represents the example which is a 1 way
speaker in FIGS. 1-3, 2 way or more may be sufficient. The same applies to the following
examples.
[0014]
All external units have a terminal having a shape corresponding to the shape of the terminal 120,
a main body portion having a shape conforming to the shape of the guide 121, and a screw 211
having a shape corresponding to the shape of the nut cover 122 Is provided. This structural
feature allows physical connection with the acoustic device 100. The physical mechanism for
connecting the external unit and the acoustic device 100 is an example described above, and any
one may be adopted.
[0015]
FIG. 4 is a diagram showing the function of the acoustic device 100. As shown in FIG. The
acoustic device 100 includes a connection unit 110, a storage unit 130, a speaker unit 140, an
acoustic signal processing unit 150, an amplification unit 151, a musical tone input unit 160, a
control unit 170, and a characteristic acquisition unit 180.
[0016]
The storage unit 130 is a recording medium such as a ROM, an HDD, or a semiconductor
memory, and stores a device information database DB1 and a control information table DB2.
[0017]
FIG. 5 is an example of the contents of the device information database DB1.
In the device information database DB1, unit types and input / output information are described
in association with the identification codes for each of the external units that can be connected to
the audio device. In a preferred embodiment, function information is additionally stored
09-05-2019
6
depending on the unit type. The control unit 170 searches the inside of the device information
database DB1 using the identification code as a key, and thereby acquires the in / out
information and function characteristics of the unit specified by the identification code. Further,
when the control unit 170 newly acquires the identification code and the input / output
information or the function information as a set, the control unit 170 adds the information to the
record of the device information database B1. When the functional characteristic corresponding
to the identification code is acquired after the fact, it may be added to the device information
database DB1.
[0018]
The identification code is one for each external unit, whereby each external unit is uniquely
identified. In the example of the figure, for example, the upper three digits represent the type of
unit, and the lower four digits are the model number of the unit. The unit type indicates the type
or functional classification of the unit. The input / output information represents what function
the external unit has, in other words, an overview of the function of the external unit. Specifically,
when the external unit is connected, what control information the acoustic device 100 receives
from the external unit (“IN”), and what kind of signal should be supplied to the external unit
(“IN”) Or "does not supply anything?" ("OUT") is described. The functional characteristic is
information describing what characteristic the unit has. For example, in the case of a speaker, the
information includes characteristics of the speaker, such as reproducible frequency band,
maximum allowable input, directivity, multi-way number, and material and size of vibrator.
[0019]
For example, the external unit specified by the identification code “001-0123” in FIG. 4 has no
signal supplied to the acoustic device 100, and the signal to be supplied from the acoustic device
100 to the external unit is an acoustic signal. It represents that it is a device of the type. On the
other hand, the external unit specified by the identification code "003" is a device of a type in
which the signal supplied from the external unit is information specifying the volume level of the
entire acoustic device 100 and there is no signal to be supplied. . Such type of device
corresponds to an input device or an audio device having a function of specifying various
parameters related to tone reproduction of the operation knob and the other speaker units. Of
course, an external unit (that is, a device that supplies a signal to the acoustic device 100 and
operates based on the signal from the acoustic device 100) for which descriptions for both IN
and OUT exist exists in the device information database DB1. It may be registered.
09-05-2019
7
[0020]
Control information for controlling the speaker unit and control information for the external unit,
which are generated based on the contents of the device information database DB1, are written
in the control information table DB2. FIG. 6 shows an example of the contents of the control
information table DB2. The control information table DB2 indicates what kind of control is to be
performed on each of the speaker unit 140 and the external unit, and the content thereof is held
unless a new unit is detected thereafter. The control unit 170 generates a signal for controlling at
least one of the acoustic signal processing unit 150 and the amplification unit 151 based on the
contents of the control information table DB2.
[0021]
The same figure (a) shows that no external unit is connected, the same figure (b) shows that the
loudspeaker unit 200A is connected, and the figure (c) shows that the loudspeaker unit 200B is
connected. FIG. 6D shows an example of the content stored in the control information table DB2
when the operation knob 400 is connected. As shown in the figure, the control information
includes at least control information for the internal speaker, and additionally includes control
information for the connected external unit, if any. As control items of control information, "input
/ output control", "frequency characteristic adjustment", and "sound pressure level adjustment"
exist.
[0022]
The item “input / output control” describes information defining what kind of data is to be
supplied to the speaker unit 140 (and the external unit if the external unit is connected). In the
example of FIG. 6A, it is defined that the acoustic signal input from the musical tone input unit
160 should be supplied only to the speaker unit 140. In the example of FIG. 5B, it is specified
that an acoustic signal is output to the speaker unit 140 and the speaker unit 200A as an
external unit. In the example of (d) in the figure, the acoustic device 100 does not output a signal
to the operation knob 400 as an external unit, but the external operation knob 400 supplies
volume information as a control signal to the acoustic device 100. Represent
[0023]
09-05-2019
8
The item “frequency characteristic adjustment” stores parameters for specifying the frequency
characteristic of the sound emitted by the speaker unit 140 or the speaker unit 200. In the
example of (c) of the figure, performing frequency crossover processing and the frequency band
of the object as content of this crossover processing are described. In crossover processing, when
a plurality of speakers have different reproducible frequency bands, if the acoustic signal is input
as it is to the plurality of speakers without processing, the sound in the frequency domain in
which the reproducible frequency bands are common is unnatural. In order to avoid the problem
that the sound quality of the sound to be reproduced is degraded, such as being emphasized and
reproduced, the acoustic signal is processed so as to reduce the volume level in advance in a
predetermined frequency band.
[0024]
As an example of this signal processing, as shown to the figure (c), the reproducible band of the
speaker unit 140 is L1-H1, and the reproducible band of the speaker unit 200 is L2-H2 (L1 <L2
<H1 < In the case of H2), in the band of the frequency width Δ (constant) centered on the
frequency (L2 + H1) / 2, a process of lowering the output level according to a predetermined
algorithm can be considered.
[0025]
The item "sound pressure level adjustment" describes whether or not the level of the input sound
signal is to be corrected, and the specific content of the correction.
For example, in FIG. 6B, performing dynamic range compression (DRC) only on the speaker unit
200 is described. The DRC is a process of compressing the range by raising the lower limit and
lowering the upper limit with respect to the range from the lower limit to the upper limit
(dynamic range) of the input signal level. Specifically, as shown in FIG. 7, for example, in the
external speaker unit 200, when the maximum allowable input of the speaker is W1 and is lower
than the output capability of the main body power amplifier, the maximum allowable input is
supported. Assuming that the level is Vth, output control is performed so that Vout falls below
(refer to input-output characteristic curve S (corrected)). By performing such control, it is
possible to prevent the speaker from being damaged by inputting a loud sound exceeding the
allowable input. In addition, in the example of the figure, the signal level of the low volume
region of Vout is raised. This is in consideration of the possibility that the reproduction capability
of the small volume may be inferior in a speaker which does not meet the sound output
09-05-2019
9
specification of the main body. However, the processing for such a small volume area may be
omitted. That is, in the present embodiment, at least the level suppression process for the large
volume area may be performed.
[0026]
The information described in the control information table DB2 is referred to by the control unit
170 when generating a signal to be supplied to the acoustic signal processing unit 150 (and an
external unit if necessary). The control information stored in the control information table DB2 is
generated each time the connection of the external unit is detected, and becomes effective until
the connection unit 110 detects the release of the connection of the external unit. That is, the
content of the control information table DB2 is rewritten each time there is connection or
disconnection of the external unit. Note that while no external unit is connected, control
information (FIG. 6A) for the preset speaker unit is valid.
[0027]
Returning to FIG. 4, the musical tone input unit 160 is realized by a communication control
circuit, an input terminal, a cable (not shown), etc., and an acoustic signal (waveform data etc.
Information as a source of sound generation is acquired and supplied to the control unit 170. For
example, the audio signal is supplied from a digital audio player connected to the audio device
100 through Bluetooth (registered trademark) connection or Line connection. Alternatively, when
an acoustic signal is stored in the storage unit 130, the musical tone input unit 160 is a memory
access controller, and has a function of reading the acoustic signal from the storage unit 130
from the musical tone input unit 160 and supplying the read signal to the control unit 170. You
may have. Alternatively, the musical tone input unit 160 may include a network interface and
may have a function of downloading musical tone data from a server via the network.
[0028]
The acoustic signal processing unit 150 is realized by an analog / digital converter, a digital /
analog converter, an acoustic signal processing filter, other signal processing circuits, and a
signal processing processor, and performs signal processing in accordance with the acoustic
signal or control signal supplied from the control unit 170 And the processed signal is output to
the amplification unit 151. The amplification unit 151 has a signal amplification circuit and the
09-05-2019
10
like, amplifies the signal output from the acoustic signal processing unit 150 according to the
amplification factor instructed by the control unit 170, and supplies the amplified signal to the
speaker unit 140. As a result, a vibration corresponding to the input signal is generated in the
signal in the speaker unit 140, which propagates in the air as an acoustic wave and reaches the
user's ear.
[0029]
The characteristic acquisition unit 180 is a communication interface, and accesses an external
device via a communication network as necessary to acquire information for controlling the
external unit or the audio device 100. The external device relates to control of the acoustic
device 100, such as a server storing information on an external unit, a server storing information
on control of the acoustic device 100, and a device for transmitting a tone signal to the acoustic
device 100. Include devices that hold information.
[0030]
The connection unit 110 supplies the identification code of the external unit connected via the
terminal 120 to the control unit 170.
[0031]
The control unit 170 is realized by a processor.
When the control unit 170 receives the identification code from the connection unit 110, the
control unit 170 refers to the device information database DB1 and extracts information about
the device of the external unit registered in association with the received identification code.
Then, the control unit 170 generates control information for controlling at least one of the
acoustic signal processing unit 150 and the amplification unit 151 based on the extracted
information, and writes the generated information in the control information table DB2. The
control information includes, for example, information specifying which of the one or more filters
of the acoustic signal processing unit 150 should be enabled / disabled, information specifying
the operation of the circuit of the amplification unit 151, and supply of a control signal. It
includes information for specifying timing and other information that affects the characteristics
of the acoustic wave emitted by the speaker unit. That is, the control unit 170 determines the
control content according to the external unit determined by the connection unit 110, and
09-05-2019
11
outputs the signal to the speaker according to the determined control content, and the
amplification At least one of the units 151 is controlled.
[0032]
Furthermore, the control unit 170 determines whether or not it is necessary to output a signal to
the connected external unit based on the information stored in the device information database
DB1. Unit 170 generates information to be output to an external unit using a predetermined
control algorithm. For example, when the external unit is an acoustic device such as the speaker
unit 200, this information includes an acoustic signal. Alternatively, when the external unit is a
device not directly related to sound, control information for controlling the device may be
included. The information thus generated is written to the control information table DB2. The
control unit 170 refers to the control information table DB 2 as necessary, and outputs a signal
or control signal input from the musical tone input unit 160 to an external unit via the terminal
120. Thus, the operation of the external unit can be controlled by the control unit 170.
[0033]
FIG. 8 is a functional block diagram of the speaker unit 200 as an external unit. The speaker unit
200 includes a speaker unit 240, a connection unit 250, an amplification unit 270, and a power
supply 260. In the figure, components shown by broken lines indicate that they are not essential.
The same applies to the following examples. The speaker unit 240 is a member including a voice
coil and a vibrating cone, and generates an acoustic wave based on the input acoustic signal. The
connection unit 250 has a terminal 210 for connecting to the acoustic device 100, receives the
supply of the acoustic signal (or the power supply) from the acoustic device 100 and finally
supplies it to the terminal 240. The amplification unit 270 includes a signal amplification circuit
and the like, amplifies the input signal according to the amplification factor specified by the
control signal supplied from the acoustic device 100, and outputs the amplified signal to 240.
The communication unit 213 has a processor, a communication interface, and a memory, and is
stored in the memory, an identification code for identifying the speaker unit 200 (and the
function of the external unit (in this case, the speaker unit 200)) Characteristic) is transmitted to
the acoustic device 100 connected via the connection unit 110. The memory may store
information related to control of the acoustic device 100 and may be provided to the acoustic
device 100. In this case, the control program of the audio device can be updated by connecting
the external unit.
09-05-2019
12
[0034]
Hereinafter, with reference to FIG. 9, a mechanism of connection between the acoustic device
100 and the speaker unit 200 and transmission and reception of information performed through
the connection units 110 and 250 will be described in detail. First, the structure of the acoustic
device 100 will be described. The connection unit 110 includes a microcomputer 112, a terminal
120, a power supply 198, and a switch 197. The terminals 120 are roughly classified into
terminals 120-I, 120-G, 120-X, and 120-V. The terminal 120-I includes a total of m ports of port
111-1 to port 111-m. Each port is connected to the power supply potential V + through signal
lines S1 to Sm and a pull-up resistor (not shown) in the microcomputer.
[0035]
The terminal 120-G is a terminal connected to the ground. The terminal 120-X includes a
transmission terminal (TX) and a reception terminal (RX), communicates with the communication
unit 213 of the speaker unit 200, and transmits the identification code of the speaker unit 200
from the speaker unit 200. To receive. The terminal 120-V is connected to the power supply line
and is for supplying power. The switch 197 is controlled by the microcomputer 112, and when it
is turned on, the terminal 120-V is connected to the power supply potential V +, and power is
supplied to an external unit connected to the terminal 120-V. In the case of OFF, power is not
supplied to the external unit.
[0036]
Next, the structure of the connection unit on the external unit side will be described by taking the
speaker unit 200 as an example. The connection part 250 which comprises the speaker unit 200
consists of the terminal 210 and the communication part 213, as shown to the same figure. That
is, the external units can be roughly classified into one having the communication unit 213 and
one not having the communication unit 213. The terminals 210 are roughly divided into
terminals 210-I, 210-G, 210-X, and 210-V. The terminal 210-I includes a maximum of m ports,
i.e., ports 210-1 to 210-m, and is connected to the external speaker 200. Discrimination resistors
R1 to Rm are provided in each port. Each port is connected to the corresponding port on the
audio device 100 side.
[0037]
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13
The terminal 210-G is connected to the terminal 120-G. The terminal 210 -X is a terminal for
connecting to the terminal 120 -X, and is for exchanging a request signal and an identification
code in response to the request between the communication unit 213 and the microcomputer
112. Terminal 210-V is for connection with terminal 120-V. The power supplied from the audio
device 100 is supplied to the communication unit 213 and 270 as needed.
[0038]
When the user makes contact with the external unit acoustic device and the terminal 120
contacts the terminal 210, a resistance circuit of the determination resistances R1 to Rm and the
pull-up resistance in the microcomputer is formed between the connection portions 110 and
250. . At this time, the potential of each port depends on the value of the determination
resistance. The potential of each port is detected by the computer (microcomputer) 112. The
microcomputer 112 specifies the connection state of the port based on the detected potential.
Specifically, as shown in FIG. 10A, a table DB 3 is prepared in advance, which stores
combinations of potentials of respective ports and connection states (identification codes of
devices connected as external units) in association with each other. The identification code
corresponding to the potential can be identified by referring to this table. In a preferred
embodiment, the microcomputer 112 may specify information on functional characteristics of
the device based on the detected potential in addition to the identification code. In addition, a
part of the ports 111-1 to 111-m is used for identification of the device, and for the other ports,
the sound unit 100 information from the external unit (device characteristics of the external unit,
control signal to sound unit, etc. Or may be used to transmit information (such as control
information) from the audio device 100 to an external unit. Thus, when the external unit is
determined by the connection unit 110 and, in addition to this, the functional characteristic of
the external unit is acquired, these pieces of information are supplied to the control unit 170.
[0039]
The microcomputer 112 obtains the identification code supplied from the communication unit
213 when the external unit side has the communication unit 213 in addition to the method of
specifying the connection partner based on the above-described potential, thereby It has a
function to perform identification (or in addition to this, to obtain information about the
characteristics of the device). For example, in the table DB3, conditions for voltage values and
voltage values at predetermined one of the ports (for example, 111−n; n <m) are set. When the
09-05-2019
14
potential detected for this port satisfies this condition, the information (type of external unit and
its characteristics) specified from the table DB 3 is not adopted, and information received from
200 via the terminal 120 -V is used. Based on the determination of the type of the external unit
and the determination of its characteristics. In this case, this information includes at least the
identification code ("001", etc.) described above.
[0040]
As described above, according to this embodiment, even if the external unit does not have the
function (the communication unit 213) for transmitting the identification code or the functional
characteristic, the determination or the function of the device according to the physical contact
state. Acquisition of characteristics can be performed. For example, even if the external unit does
not have the function of transmitting and receiving information, if the connection unit 250 is
provided and predetermined information is registered in advance in the audio apparatus 100, the
external unit is recognized by the audio apparatus 100, It becomes possible to operate integrally
with the acoustic device 100 according to the external unit. On the other hand, when the external
unit is provided with a function of transmitting the identification code and the functional
characteristic, the sound device 100 can be provided with information on the characteristic of
the external unit in an amount exceeding the physical limit of the number of ports. Even if the
functional characteristics are not registered in advance in the audio device 100, if the functional
characteristics are transmitted together with the identification code, it is possible to realize the
integrated operation described above.
[0041]
In a preferable mode, the microcomputer 112 performs switching of ON / OFF of the switch 197
based on the contact state and the information received from the communication unit 213.
Specifically, when the potential detected at one of the ports 111-1 to 111-m determined in
advance indicates a predetermined voltage value (or a range of voltage values), the switch 197 is
turned on. Supply power to Alternatively, when predetermined flag information is included in the
information transmitted from the communication unit 213, the switch 197 is turned on. This
information has, for example, a data format including an identification code (seven digits), a
power supply necessity flag (1 bit), and an area of function information given a predetermined
number of bits in FIG. 10 (b). It is generated as data D1 and transmitted / received. By
exchanging information on the necessity of power supply, power can be supplied from the
acoustic device 100 only when the speaker unit 200 is required.
09-05-2019
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[0042]
What is connected to the acoustic device 100 may be equipment other than the device that
operates based on the control signal from the acoustic device 100. FIG. 11 is a diagram for
describing the function of the display 300 as an example of an external unit other than the
speaker unit 200 connected to the audio apparatus 100. The display 300 includes a display unit
310 and a connection unit 250. The display unit 310 is a display device including a liquid crystal
panel and a circuit for driving the panel, and controls display based on a control signal supplied
from the acoustic device 100 via the connection unit 250. In a preferred embodiment, the control
signal includes information representing the sound pressure level (volume) emitted at 140, and
the user confirms the volume currently set in the audio device 100 by means of the display 300.
Can.
[0043]
FIG. 12 is a front view when the display 300 is attached to the acoustic device 100. As shown in
FIG. This information is generated based on the amplification factor supplied from the control
unit 170 to the amplification unit 151. The control signal received by the display 300 may
include, in addition to the volume, information related to processing performed in the acoustic
device 100. Note that the method of displaying information may be analog or digital, and the
content to be displayed may be related to any acoustic characteristics such as frequency
characteristics other than the volume.
[0044]
Connected to the acoustic device 100 may be a device that supplies control signals to the
acoustic device 100. FIG. 13 is a view for explaining the function of the operation knob 400 as
another example of the external unit. The operation knob 400 includes an operator 410 and a
connection portion 250. The operator 410 is a rotary input switch operated by the user, having a
rotation mechanism and a resistor circuit and other circuits reflecting the operation state thereof.
The operator 410 outputs a signal corresponding to the amount of rotation to the control
information 250. The control information is supplied to the control unit 170 from the terminal
250 via the terminal 210. The control unit 170 controls the amplification unit 151 based on the
received control information.
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[0045]
All external units are provided with a terminal having a shape corresponding to the shape of the
terminal 120, a main body having a shape conforming to the shape of the guide 121, and a screw
211 having a shape corresponding to the shape of the nut cover 122 By having it, the
mechanical connection with the acoustic device 100 is secured. Then, by providing the
connection units 250 in all the external units, a function of supplying information for identifying
the own unit to the acoustic device 100 is realized.
[0046]
FIG. 14 is an external view of the acoustic device 100 with the operation knob 400 attached. The
user specifies the volume level emitted from the speaker unit by rotating the operation knob 400
to the left and right. By attaching such an operation device, it is possible to easily change the
sound parameter related to the sound emission in the speaker unit 140. Further, the value
designated by the knob is not limited to the volume level, and may be any parameter related to
sound reproduction, such as the type and amount of effect, and the mix ratio. In addition, a
button or a switch may be provided as the operation mechanism. Furthermore, a plurality of such
input mechanisms may be provided to designate a plurality of parameters. Furthermore, the
operation knob 400 may be provided with a liquid crystal screen or the like for confirming the
value of the set parameter. Furthermore, a terminal for connecting to an electronic musical
instrument may be provided on the operation knob 400.
[0047]
The structure of the connection parts 110 and 250 is not limited to the specific example shown
in FIG. In short, the external unit may be mechanically connected to the acoustic device 100, and
the acoustic device 100 may have a mechanism capable of detecting the state of connection and
identifying at least 250 devices. For example, digital data may be acquired without determination
based on analog data of potential. In this case, for example, the presence or absence of the
connection of the corresponding terminal on the connection unit 250 side is output with 1 bit of
0 or 1 for each port, and the connection state is based on the information of a total of m bits
obtained from all ports. Is represented.
09-05-2019
17
[0048]
Moreover, you may employ | adopt shapes other than a connector shape as a physical shape of a
connection part. For example, as shown in FIG. 15, a plate-like member 219 is provided on the
connecting portion 250 side, and a member 125 for inserting the member 219 on the connecting
portion 110 side is provided. The relationship between the members 219 and 218 is, so to speak,
the relationship between a key and a lock. The member 219 is provided with a plurality of
recesses (dimples) 218, and the recess 218 is provided with a plurality of tumbler pins 188. The
way of providing the recess 218 is designed to be different for each external unit. When the
member 219 is inserted into the member 218 from the X direction, the tumbler pins 188
corresponding to the recesses 218 are different in the distance moved in the Z direction as
compared to the tumbler pins 188 in which the recesses 218 are not provided. The tumbler pin
188 is provided with a spring 167 and a switch (not shown), and either ON or OFF of the switch
is input according to the amount of movement of the corresponding tumbler pin 188. In this way,
the external unit is identified by discriminating the recess pattern different from the external
unit. The recess pattern may further represent functional characteristics.
[0049]
Hereinafter, an operation example of the control unit 170 will be described in detail with
reference to FIG. The connection unit 110 constantly monitors changes in the connection state of
the terminal 120. When the microcomputer 112 detects a change in the connection state of the
terminal 120 (that is, connection of a new external unit or disconnection of an existing external
unit) (S100: Y), it is determined in advance based on the detected connection state. According to
the above algorithm, one identification method is specified from among a plurality of
identification methods (S101). That is, (a) whether the determination is performed based only on
the connection state of the terminal, (b) whether the determination is performed by receiving the
identification code, or (c) whether the determination is performed based on the combination of
the connection state of the terminal and the identification code Is determined. For example, when
the connection of a specific port is detected, the determination method of (b) above is adopted.
[0050]
The control unit 170 specifies the device by referring to the device information database DB1
based on the information supplied from the microcomputer 112 (S102). Here, when the device
can not be specified even by the reference, that is, when the identification code corresponding to
09-05-2019
18
the detected electric potential or the received identification code is not registered in the device
information database DB1, the control unit 170 determines the information of the external unit.
It tries acquisition of (S104). Specifically, the control unit 170 accesses the server that manages
the information of the external unit via the characteristic acquisition unit 180, and the acquired
identification code and the detailed information on the external unit characterized by the
identification code or the identification code ( Get the unit type, input / output information,
function characteristics). Also in this process, when the information about the identification code
can not be acquired, the control unit 170 performs predetermined exception processing (for
example, it is regarded that nothing is connected and the information is written to the control
information table DB 2). Run. When information other than that stored in the control information
table DB2 is acquired as the functional characteristic, the content of the device characteristic of
the control information table DB2 may be updated with the acquired information.
[0051]
When the external unit is specified (S105), the control unit 170 further determines whether the
information acquired from the unit by the acoustic device 100 includes information on control of
the acoustic device 100 (S106). If the information related to the control of the audio device 100
is included (S106: Y), the item related to the speaker 140 of the device information database DB1
is rewritten to the acquired information. When the control content updated in this way is written
in the control information table DB2 (S110), the control unit 170 subsequently acquires an
acoustic signal from 160, and according to the content of the control information table DB2, the
acoustic signal processing unit 150, the amplification unit 151, And if necessary, an acoustic
signal and a control signal are supplied to the external unit as needed (S112).
[0052]
Thus, the fact that the external unit is connected or released is reflected in the sound emission
content of the speaker unit 140. In addition, the speaker units 200 and 140 are controlled in
conjunction with each other after taking their functional characteristics into consideration.
Specifically, in the case where the external unit is the speaker unit 200, adjustment of a suitable
sound pressure level and frequency characteristic is performed in consideration of the functional
characteristics of the speaker unit 140 and the speaker unit 200, so the connected speaker
Reproduction sound quality can be realized by making the most of the characteristics of the unit
200. Since the control contents are automatically reflected each time there is a change in
connection, it is not necessary to set the acoustic characteristic each time the user attaches an
external unit, for example. If the user is allowed to change the contents of the control information
09-05-2019
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table DB2 and the user registers in advance the setting contents of preference, even if the
external unit is switched, the sound quality preferred by the user within the range of the
functions possessed by the unit. Can provide musical tones.
[0053]
In addition, in the acoustic device 100, since a plurality of acquisition paths for the method of
determining the device and the external unit and the functional characteristics to the acoustic
device 100 are prepared, the acoustic device 100 has various configurations of external units
(for example, many communication units Hardware configuration that can provide the amount of
information to the audio apparatus 100, or hardware configuration that provides information
only via a terminal without such a communication unit.
[0054]
Since it is determined whether power should be supplied to the external unit based on the
determination based on the connection state of the terminals and the reception of the
identification code, even an external unit not having a power supply can be operated by
connecting to the acoustic device 100. it can.
[0055]
With regard to the reproduction of musical tones, when an audio device other than the external
unit (hereinafter referred to as a non-connected cooperative device) and the audio device 100
operate in cooperation, the audio device 100 and the external unit are triggered by the
connection of the external unit. The control content of at least one of the above may be
determined in consideration of the operation content of the non-connection cooperation device.
For example, a situation may be considered in which the non-connection cooperation device is a
subwoofer and a music signal such as a digital audio player is wirelessly transmitted to both of
the subwoofer.
At this time, it is assumed that the tone signal is generated so as to optimize the sound quality
emitted simultaneously from the sound device 100 and the characteristics of the subwoofer. In
this case, when the speaker unit 200 is newly connected as an external unit, as described above,
the contents of the control information table DB2 are rewritten in consideration of the
characteristics of the speaker unit 200, and from the acoustic device 100 and the speaker unit
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200. Control is performed so as to optimize the quality of emitted tones. However, this change in
control content may break the balance with the tones emitted from the subwoofer, and the
overall performance of the acoustic system including the acoustic device 100, the subwoofer, and
the external speaker unit may not be optimized. There is.
[0056]
In a preferred embodiment, in order to prevent such a situation, when the control unit 170
detects the connection of the external unit, it determines whether or not there is a nonconnection cooperation device, and controls the non-connection cooperation device (in this case,
Identify the music player). Then, an inquiry signal is sent to the music reproduction device via
the characteristic acquisition unit 180, and that the non-connection cooperation device is a
subwoofer and the device characteristics of the non-connection cooperation device are acquired
from the music reproduction device. The control unit 170 rewrites the information stored in the
device control table based on the information acquired from the non-connection cooperation
device. For example, the musical tone signal supplied to the acoustic device 100 and the speaker
unit 200 is rewritten to the content of cutting the musical tone signal having a predetermined
frequency or less. As a result, only the subwoofer emits the tone below the predetermined
frequency, and the performance of the entire acoustic system is automatically optimized without
the user changing the setting contents.
[0057]
As an external unit, devices not directly related to sound reproduction or control may be
connected. FIG. 17 shows the function of the LED light 500 as an external unit. Common to the
above-described external unit is that it has a connection 250 and a power supply 260 (but not
essential). On the other hand, the thing peculiar to this external unit is that it has a light emitting
portion 510. The light emitting unit 510 includes one or more LED light bulbs, and in a preferred
embodiment, performs a light emitting operation based on a control signal supplied from the
acoustic device 100 via the terminal 210. In this case, the control signal includes, for example,
information on light emission timing and light amount (brightness) as the content of the issuing
operation. FIG. 18 is an external view of the acoustic device 100 to which the LED light 500 is
connected.
[0058]
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21
Regarding the control content, the control unit 170 may reflect the content of the musical tone
(volume, frequency characteristics, tempo, other information related to music, etc.) emitted by
the speaker unit 140 in the control signal. For example, the display mode (color designation,
color change, character size, etc.) in the LED light 500 is changed based on information such as
the volume of the sound emitted from the speaker unit 140, the genre of the music, and the
tempo. As described above, in interlocking with the musical tone and the lighting control, it is
conceivable to enjoy the lighting state according to the musical tone to be reproduced.
[0059]
FIG. 19 shows the function of the alarm function watch 600 as an external unit. The alarm
function watch 600 includes a connection 250, a power supply 260, and a timer 610. The clock
unit 610 displays a clock mechanism including a crystal transmitter, an alarm mechanism
including a ringing means, an operator for inputting alarm information, and a memory for storing
alarm setting contents, and an operator time and alarm setting information. And a liquid crystal
display unit (not shown).
[0060]
FIG. 20 is a diagram illustrating an example of the appearance of the acoustic device 100 in
which 600 is connected. As shown in FIG. 19, the operation of the watch is independent of the
control of the acoustic device 100. Alternatively, as with the LED light 500, the timer 610 may be
operated based on the control signal received via 250. Conversely, the speaker unit 140 may be
controlled based on the setting content of the alarm. For example, when the alarm set time
arrives, an instruction to lower the volume level is generated by the clock unit 610 and supplied
to the control unit 170 via the connection units 110 and 250. As described above, if the storage
contents of the device information database DB1 and the control information table DB2 are set,
the control for the sound device 100 interlocked with the operation of the connected external
unit, the external unit interlocked with the operation of the sound device 100 Can be set to the
desired contents for the control for the control, and the simultaneous and parallel control of the
acoustic device 100 and the unit
[0061]
Although not illustrated, as an external unit, a housing having only an enclosure function that
exerts a predetermined acoustic effect may be connected.
09-05-2019
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[0062]
The external unit connected to the acoustic device 100 is not limited to one device, but may be a
collection of a plurality of devices or parts.
For example, as shown in FIG. 21, in a state where the speaker unit 200 is attached to the
connection portion 110, a diffuser 700 having a function of diffusing acoustic waves may be
attached to the speaker units 140 and 200 as a shared extension.
[0063]
Two or more connection portions 110 may be provided in the housing 199. That is, a plurality of
external units may be attached to the acoustic device 100 simultaneously. In this way, variations
in the appearance and control content of the acoustic device 100 can be increased. In this case,
the control unit 170 obtains an identification code from the terminal 120 provided in each
connection unit 110 and determines all external units connected. The acoustic signal processing
unit 150 and the amplification unit 151 are controlled according to at least one or more of the
external units. Also, in the acoustic device 100, the combination of external units is registered in
advance, and the acoustic signal processing unit 150 and the plurality of external devices are
registered only when the plurality of connected external units match the registered combination.
The content of control that is realized for at least one of them may be registered in the control
information table DB2. This allows the user to enjoy the combination of external units.
[0064]
The control unit 170 may transmit the information stored in the control information table DB2 to
another terminal. In this case, it is possible to disclose to a third party what kind of external unit
the user has connected to the sound device 100 and what kind of control is being performed (or
what has been done in the past). Furthermore, such disclosure information may be integrated
into one server so that another person's control contents can be browsed. In this way, the user
can enjoy the customization of his / her audio device 100 with reference to the customization
case of another person.
09-05-2019
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[0065]
Another acoustic device 100 may be connected as an external unit. That is, the acoustic devices
100 may be connected to each other. Specifically, each acoustic device 100 is provided with a
dedicated terminal (hereinafter referred to as a "dedicated terminal") to be connected to another
acoustic device 100, and the "dedicated terminal" of the first acoustic device 100 and the second
acoustic device When the connection part 110 of 100 is connected, the functional characteristics
of the acoustic device 100 are exchanged with each other. Then, the first sound device 100
determines the control content so as to function as one sound device as a whole. Also, three or
more such sound devices 100 may be connected.
[0066]
How to implement the functions of the connection unit 110, the acoustic signal processing unit
150, and the control unit 170 in hardware is not limited to the example described in the above
embodiment. Hardware such as a processor may be provided for each function, or a plurality of
functions may be executed by one processor. For example, the function described above is
realized by the processor included in the audio device 100 reading out the control program from
the storage unit 130 and executing the control program. This program can be provided in a state
of being recorded on a computer-readable recording medium such as a magnetic recording
medium (magnetic tape, magnetic disk, etc.), an optical recording medium (optical disk, etc.), a
magneto-optical recording medium, a semiconductor memory. It is also possible to download to
the audio device 100 via a network such as the Internet. The point is that the audio device of the
present invention is specified by the case, the speaker, the terminal provided on the case, the
specifying unit specifying the external unit attached to the terminal, and the specifying unit It is
sufficient to determine the control content according to the external unit, and to have a control
unit that controls the speaker according to the determined control content.
[0067]
DESCRIPTION OF SYMBOLS 100 ... Acoustic device, 110, 250 ... Connection part, 111 ...
Terminal, 112 ... Microcomputer, 120, 210 ... Terminal, 121 ... Guide, 122 ... Nut cover, 124 ...
connection unit 130 ... storage unit 140 ... speaker unit 150 150 signal processing unit 151
amplification unit 160 tone input unit 170 control unit 180 ... information acquisition unit, 197
... switch, 198, 260 ... power supply, 199 ... housing, 200 ... external unit, 211 ... screw, 212 ...
main body, 213 ... Communication unit, 250 ... Connection unit, 300 ... Display, 400 ... Operation
knob, 500 ... LED light, 600 ... Alarm clock, 700 ... Diffuser
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