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JP2009130643

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2009130643
The present invention provides an audio signal supply device, a parameter providing system, a
television, an AV system, a speaker device and an audio signal supply method which can provide
an external speaker device to be externally connected at low cost and with free design. A
television 1 according to an embodiment of the present invention stores in a storage unit 25
parameters at the time of frequency characteristic adjustment of an audio signal set in a sound
quality adjustment unit 22. By selecting a parameter corresponding to the type of the external
speaker device 100 connected to the connection terminal 29 and setting it in the sound quality
adjustment unit 22, even if the type of the external speaker device 100 is changed, sound
emission with similar frequency characteristics It can be performed. In addition, even if this
parameter is not stored in the storage unit 25, the data acquisition unit 40 can acquire the
parameter from the server 200, store it in the storage unit 25, and set it in the sound quality
adjustment unit 22. [Selected figure] Figure 1
Audio signal supply device, parameter providing system, television, AV system, speaker device,
and audio signal supply method
[0001]
The present invention relates to a technology of sound quality adjustment when using an
external speaker.
[0002]
When watching a television, the user of the television listens to the sound by the sound emitted
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1
from the built-in speaker of the television or the connected headphone.
At this time, since the frequency characteristics of the built-in speaker of the television and the
headphone are different between the case of emitting sound from the built-in speaker of the
television and the case of emitting sound from the headphone, the respective cases of switching
between the built-in speaker and the headphone are used. There is a technique of correcting and
supplying the frequency characteristic of an audio signal according to the frequency
characteristic (for example, Patent Document 1). Unexamined-Japanese-Patent No. 2004-64172
[0003]
By the way, in recent years, a thin and large screen television such as a liquid crystal display is
becoming mainstream in the television, and the thickness and the screen are becoming smaller
year by year. Then, it is necessary to narrow the frame by designing the display screen area to be
larger than the size of the television case, and it is necessary to miniaturize the internal speaker
that has been arranged at that position. The sound quality was to deteriorate. Therefore, when
the user of such a television is not satisfied with the sound quality, a speaker apparatus with high
sound quality is often provided outside and the television is often viewed using the speaker
apparatus. Moreover, a plurality of types of speaker devices are provided, and are used
depending on the viewing content.
[0004]
Here, in the technology disclosed in Patent Document 1, even if the type of headphones
connected to the television is changed, the correction content of the frequency characteristic of
the audio signal does not change, but the frequency characteristic of the headphones does not
change significantly. The desired sound emission can be obtained from On the other hand, in the
case of not a headphone but a speaker device, the frequency characteristics often differ greatly
depending on the type. However, in the television using the technology disclosed in Patent
Document 1, even if the type of the speaker device to be connected changes, the correction
content of the frequency characteristic of the audio signal does not change, and a desired sound
emission can be obtained. Absent.
[0005]
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2
As described above, the external connection of the speaker device often has various frequency
characteristics depending on the type, and it is necessary to provide a sound quality adjustment
circuit for correcting the audio signal in order to obtain the desired frequency characteristics.
Yes, it is a factor of high cost. In addition, when the speaker device is incorporated in a television
stand or the like, the load on the sound quality adjustment circuit can be reduced by devising the
arrangement of the speakers, but the freedom of the design of the outer shape is limited by the
restriction of the speaker arrangement. It was supposed to be
[0006]
The present invention has been made in view of the above-mentioned circumstances, and an
audio signal supply device, a parameter providing system, a television, an AV system, and a
speaker device capable of providing an external speaker device externally connected with low
cost and free design. And providing an audio signal supply method.
[0007]
In order to solve the above-mentioned problems, the present invention specifies a connection
terminal to which a speaker device is connected and which outputs a supplied audio signal to the
connected speaker device, and a type of the speaker device connected to the connection terminal.
Identification means, acquisition means for acquiring from outside the parameter corresponding
to the type of the speaker apparatus specified by the identification means, storage means for
storing the parameters acquired by the acquisition means, and an audio signal The acoustic
characteristic is adjusted by an input unit, an acoustic characteristic adjustment unit that adjusts
the acoustic characteristic based on the parameter stored in the storage unit with respect to the
audio signal input to the input unit, and the acoustic characteristic is adjusted by the acoustic
characteristic adjustment unit Means for supplying an audio signal to the connection terminal. To
provide a device.
[0008]
In another preferred embodiment, the electronic device further comprises identification means
for identifying the type of the speaker device connected to the connection terminal, and the
identification means uses the type of the speaker device identified by the identification means as
the connection terminal. You may specify as a kind of speaker apparatus connected.
[0009]
Moreover, in another preferable aspect, the identification means may identify the type of the
speaker device connected to the connection terminal by measuring the resistance value of the
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identification resistor provided in the speaker device.
[0010]
Further, in another preferable aspect, the identification means may identify the type of the
speaker device connected to the connection terminal by optically reading a graphic drawn on the
speaker device.
[0011]
Moreover, in another preferable aspect, the identification means may identify the type of the
speaker device connected to the connection terminal by acquiring identification information
stored in the storage means of the speaker device.
[0012]
Further, in another preferable aspect, the identification unit includes a wireless communication
unit, and the identification unit transmits information indicating the type of the identified
speaker device to the identification unit by the wireless communication unit. The specifying unit
may receive the information transmitted by the wireless communication unit, and specify the
type of the speaker device indicated by the information as the type of the speaker device
connected to the connection terminal.
[0013]
Further, in another preferable aspect, the information processing apparatus further comprises a
determination unit that determines whether a parameter corresponding to the type of the
speaker device specified by the specification unit is stored in the storage unit, and the acquisition
unit is determined by the determination unit. When it is determined that the storage unit does
not store a parameter corresponding to the type of the speaker device specified by the
identification unit, the parameter corresponding to the type of the speaker device is acquired
from the outside, and the storage unit Each time the acquisition means acquires a parameter, the
type of the speaker device corresponding to the parameter and the parameter are stored in
association with each other, and the acoustic characteristic adjustment means determines the
identification among the parameters stored in the storage means. Adjust the acoustic
characteristics based on the parameters corresponding to the type of the speaker device
identified by the means Good.
[0014]
Further, in another preferable aspect, the acquisition unit transmits request information
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indicating the type of the speaker device identified by the identification unit to a server
connected to the network, and is transmitted from the server in response to the transmission. By
receiving the parameter, the parameter corresponding to the type of the speaker device
connected to the connection terminal may be obtained.
[0015]
Further, in another preferable aspect, the acquisition unit reads out the parameter stored in the
storage unit of the speaker device connected to the connection terminal, and thereby the
parameter corresponding to the type of the speaker device connected to the connection terminal.
You may get
[0016]
Further, according to the present invention, in the audio signal supply device described above, a
server storage unit that stores a plurality of parameters corresponding to the type of the speaker
device, and the audio signal supply device among the parameters stored in the server storage
unit. And a server including: transmission means for transmitting to the audio signal supply
device a parameter corresponding to the type of the speaker device indicated by the request
information received from the network via the network. .
[0017]
Further, according to the present invention, there is provided an audio signal supply device as
described above, a display means for performing display on a display surface based on an input
video signal, and an audio signal to be supplied which is disposed around the display surface. An
internal speaker for emitting sound, the storage means stores a parameter corresponding to the
internal speaker, and the supply means adjusts the audio signal whose acoustic characteristic has
been adjusted by the acoustic characteristic adjustment means to the connection terminal or the
connection terminal The sound characteristic adjustment means adjusts the sound characteristic
based on the parameter corresponding to the internal speaker stored in the storage means when
the supply means supplies an audio signal to the internal speaker. To provide a television
characterized by
[0018]
Further, the present invention provides an AV system comprising the above-described television
and a television stand having a speaker device connected to the connection terminal.
[0019]
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5
Further, the present invention is a speaker device for connecting to an audio signal supply device
that supplies an audio signal whose acoustic characteristic has been adjusted based on the
acquired parameter from a connection terminal, and the audio signal is connected by connecting
to the connection terminal. Storing means for storing parameters used in the audio signal supply
device, and a speaker for storing the parameters used in the audio signal supply device, and a
speaker for emitting an audio signal input from the input means; And a speaker device
characterized by comprising.
[0020]
Further, according to the present invention, the type of the device is identified based on the
measurement result of the resistance value of the identification resistor of the device, the
parameter corresponding to the identified type is acquired, and the acoustic is generated based
on the acquired parameter. A speaker device connected to an audio signal supply device for
supplying an audio signal whose characteristic has been adjusted from a connection terminal, the
input device to which the audio signal is input by being connected to the connection terminal,
and the input device A speaker device comprising: a speaker for emitting an input audio signal;
an identification resistor indicating a predetermined resistance value; and a measurement
terminal for connecting the identification resistor to the audio signal supply device provide.
[0021]
Further, the present invention is an audio signal supply method used in an audio signal supply
device to which a speaker device is connected and which has a connection terminal for
outputting a supplied audio signal to the connected speaker device, In the identification step of
identifying the type of the speaker device to be connected, the acquisition step of acquiring from
outside the parameter corresponding to the type of the speaker device identified in the
identification step, and storing the parameter acquired in the acquisition step An acoustic
characteristic adjustment process of adjusting acoustic characteristics based on parameters
stored in the storage means, with respect to a storage process to be stored, an input process in
which an audio signal is input, and an audio signal input in the input process And connecting the
audio signal whose acoustic characteristic has been adjusted by the acoustic characteristic
adjustment process. Providing an audio signal supplying method, characterized in that it
comprises a supply step of supplying the child.
[0022]
According to the present invention, it is possible to provide an audio signal supply device, a
parameter providing system, a television, an AV system, a speaker device, and an audio signal
supply method that can provide an external speaker device connected externally with low cost
and free design. it can.
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[0023]
Hereinafter, an embodiment of the present invention will be described.
[0024]
Embodiment A television 1 according to an embodiment of the present invention is a flat-screen
television such as a liquid crystal display, a plasma display, an organic EL display, etc., having a
speaker inside and having a terminal for connecting a speaker device outside doing.
The configuration of the television 1 will be described using FIGS. 1 and 2.
FIG. 1 is a block diagram showing the configuration of the television 1, and FIG. 2 is an
explanatory view showing the appearance of the television 1.
The television 1 has a CPU (Central Processing Unit) not shown, and the CPU controls each part
of the television 1.
[0025]
The signal output unit 10 generates a video signal and an audio signal according to control of a
CPU (not shown) by receiving data from a television tuner, a DVD (Digital Versatile Disc)
playback device, etc. The audio signal is output to the display unit 12 through the video signal
input unit 11, and the audio signal is output to the sound quality adjustment unit 22 through the
audio signal input unit 21.
[0026]
The display unit 12 is a display device such as a liquid crystal display, a plasma display, or an
organic EL display, and performs display on the display surface 12 -D based on the video signal
input from the video signal input unit 11.
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Display surface 12-D is arrange | positioned at the front of the housing | casing 50, as shown in
FIG.
[0027]
The sound quality adjustment unit 22 adjusts the acoustic characteristics of the audio signal
input from the audio signal input unit 21 based on parameters set by the parameter setting unit
23 described later.
In the present embodiment, the acoustic characteristic is a frequency characteristic, and the
sound quality adjustment unit 22 is an equalizer that adjusts the frequency characteristic of the
audio signal based on the set parameter.
Then, the audio signal whose frequency characteristic has been adjusted is output to the
amplification unit 26.
[0028]
The operation unit 24 has a remote control and the like, and when the user of the television 1
operates the operation unit 24, information representing the contents of the operation is output
to a CPU (not shown).
The operation unit 24 operates the parameter setting unit 23 and the switching supply unit 27
by selecting whether to emit sound from the internal speaker 28 of the television 1 or to emit
sound from the external speaker device 100 connected to the connection terminal 29. And
outputs switching information indicating the internal speaker or the connection terminal.
Here, the remote control has an operation key and a wireless communication means for
transmitting a signal according to the operation of the operation key by radio waves or infrared
rays, and the operation unit 24 is a reception means for receiving a signal transmitted from the
remote control Have.
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Then, the operation unit 24 determines the operation content based on the signal received by the
receiving means.
[0029]
In addition, when the type of the external speaker device 100 connected to the connection
terminal 29 is input by the operation of the operation unit 24, type information indicating the
type is output to the parameter setting unit 23.
In addition, at the time of these selection and input, the display surface 12 -D of the display unit
12 may display a display indicating the selection content and the input content.
Also, an external speaker is connected by displaying the type of the external speaker device 100
whose external speaker parameter is stored in the storage unit 25 described later on the display
surface 12-D and selecting from among the displayed ones. The type of the device 100 may be
input.
At this time, when the external speaker device 100 to be selected is not displayed on the display
surface 12-D, the operation unit 24 may be operated to input.
[0030]
Here, although the various speaker apparatuses are used with the external speaker apparatus
100, for example, as shown in FIG. 3, the external speaker apparatus 100 is a television stand in
which the two speakers 101 were installed.
The external speaker device 100 does not have a circuit for adjusting acoustic characteristics
such as frequency characteristics of an audio signal, an amplifier and the like, and emits an audio
signal supplied to each speaker 101 as it is.
As described above, since the external speaker device 100 does not have a circuit or the like for
adjusting acoustic characteristics, it can be a low cost device.
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[0031]
The storage unit 25 stores parameters set in the sound quality adjustment unit 22.
As shown in FIG. 4, the storage unit 25 includes an internal speaker parameter generated based
on the frequency characteristic of the internal speaker 28 and an external speaker generated
based on the unique frequency characteristic of the external speaker device 100. Parameters and
are stored.
In particular, as the “external speaker device A” and the “external speaker device B”, as the
external speaker parameters, external speaker parameters corresponding to the type of the
external speaker device are stored.
That is, among the external speaker parameters, the parameter corresponding to "external
speaker device A" is a parameter dedicated to "external speaker device A" generated based on the
unique frequency characteristic of "external speaker device A". ing.
This parameter indicates how much gain is to be performed in each frequency band, and the
sound quality adjustment unit 22 adjusts the frequency characteristic of the input audio signal
according to the content indicated by the parameter to be set. Do.
Here, the type of the external speaker device indicates the type of the external speaker device
100 in the present embodiment. Note that the type of external speaker device may be one
representing an individual in the same model of the external speaker device 100. In this case,
each external speaker parameter corresponds to an individual difference in frequency
characteristics. can do. Further, the type of the external speaker device may indicate a
combination of multiple types of the external speaker device 100, and models having the same
frequency characteristics are of the same type, so that overlapping parameters are not stored. It
can also be done. As described above, classification of the types of external speaker devices may
be performed with the external speaker device 100 having the same or unique frequency
characteristics as one type.
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10
[0032]
Further, as described later, when the data acquiring unit 40 acquires an external speaker
parameter corresponding to the type of the external speaker device 100 not stored in the storage
unit 25, the storage unit 25 acquires the external speaker parameter. Are stored in association
with the type of the external speaker device 100 corresponding to the parameter. At this time,
some of the parameters to be stored may be erased by limiting the number of stored parameters
based on usage frequency, usage period, storage capacity, and the like.
[0033]
The parameter setting unit 23 reads the parameter from the storage unit 25 based on the
switching information and the type information output from the operation unit 24, and sets the
parameter in the sound quality adjustment unit 22. When the switching information indicates the
internal speaker, the parameter setting unit 23 reads out the internal speaker parameter from
the storage unit 25 and outputs the sound quality adjusting unit 22 as the one to emit sound
from the internal speaker when the switching information indicates the internal speaker. Set to
On the other hand, when the switching information indicates the connection terminal, the
external speaker parameter is read out from the storage unit 25. At this time, the external
speaker parameter corresponding to the external speaker device type indicated by the input type
information is read out. , Sound quality adjustment unit 22 is set. For example, when the type
information indicates “external speaker device B”, among the external speaker parameters, the
parameter corresponding to “external speaker device B” is read and set in the sound quality
adjustment unit 22.
[0034]
Here, when the parameter setting unit 23 determines whether the external speaker parameter
corresponding to the type of the external speaker device 100 indicated by the type information is
stored in the storage unit 25 and determines that the parameter is not stored. In this case, the
type information input from the operation unit 24 is output to the data acquisition unit 40. Then,
as described later, when the external speaker parameter corresponding to the type of the
external speaker device 100 indicated by the type information is acquired by the data acquisition
unit 40 and newly stored in the storage unit 25, the parameter setting unit 23 The external
speaker parameter newly stored in the storage unit 25 is read out and set in the sound quality
adjustment unit 22. When the external speaker parameter corresponding to the type of the
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11
external speaker device 100 can not be acquired by the data acquisition unit 40, a flat frequency
characteristic parameter may be set in the sound quality adjustment unit 22. .
[0035]
The data acquisition unit 40 is a communication unit that communicates with the server 200 via
the network, requests the server 200 to transmit a predetermined external speaker parameter,
and receives the requested external speaker parameter. When the type information is input from
the parameter setting section 23, the data acquisition section 40 communicates with the server
200, and receives from the server 200 an external speaker parameter corresponding to the type
of the external speaker device 100 indicated by the type information. Get by. Here, the
transmission request for the external speaker parameter by the data acquisition unit 40 is
performed by transmitting request information including information indicating the type of the
external speaker device 100 indicated by the type information input from the parameter setting
unit 23. Then, as shown in FIG. 4, the data acquiring unit 40 acquires the acquired external
speaker parameter with the type of the external speaker device 100 corresponding to the
parameter (“external speaker device C” in the description of FIG. 4). It is made to respond |
correspond and it makes the memory | storage part 25 memorize | store.
[0036]
Here, the server 200 has storage means for storing external speaker parameters corresponding
to various types of external speaker devices 100, and communication means for communicating
with other devices via a network. In the case where the data acquisition unit 40 makes a request
for transmission of the external speaker parameter, the server 200 confirms whether or not the
requested parameter exists in the storage unit in which the external speaker parameter is stored.
In the case, the parameter is transmitted, and in the absence, the information indicating the
absence is transmitted.
[0037]
The amplification unit 26 is an amplifier that amplifies the input audio signal at a predetermined
amplification factor, and outputs the amplified audio signal to the switch supply unit 27. The
predetermined amplification factor changes in accordance with the volume value set by
operating the operation unit 24 and a volume (not shown).
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12
[0038]
The switch supply unit 27 outputs the input audio signal to the internal speaker 28 or the
connection terminal 29 in accordance with the content of the switch information from the
operation unit 24. That is, when the switching information indicates the internal speaker, the
audio signal input from the amplification unit 26 is supplied to the internal speaker 28. On the
other hand, when the switching information indicates the connection terminal, the audio signal
input from the amplification unit 26 is supplied to the connection terminal 29.
[0039]
The internal speaker 28 emits the audio signal supplied. This audio signal becomes an audio
signal whose frequency characteristic has been adjusted by the sound quality adjustment unit 22
based on the internal speaker parameter.
[0040]
As shown in FIG. 2, the internal speaker 28 is disposed at the periphery of the display surface
12-D, and in the present embodiment, is disposed inside the housing 50 and to the left and right
of the display surface 12-D. There is. Further, an opening from which the sound emitted from the
internal speaker 28 in the housing 50 is emitted to the outside of the housing 50 is provided in
the front direction of the housing 50. The area in which the internal speaker 28 is disposed is
very small compared to the area of the display surface 12-D, and provided in a part of the area
(hereinafter referred to as a frame) other than the display surface 12-D in the front direction of
the housing 50 It is done. The housing 50 is supported by the support 51 and the rotating shaft
52.
[0041]
As described above, a design is used in which the ratio of the area of the display surface 12-D is
increased compared to the entire size of the television 1, and the frame is very narrow. A speaker
which can not be used can not use a speaker that can emit sound with high quality sound
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13
because the volume of space that can be arranged is narrow. The present embodiment is an
example, and the internal speaker 28 is not limited to the case where the internal speaker 28 is
disposed in the housing 50 having the display surface 12-D, and is connected to the housing 50
having the display surface 12-D. It may be arranged in another case. In addition, the direction of
the opening, the arrangement direction of the speakers, and the like can be various modes
according to the design.
[0042]
The connection terminal 29 is connected to various types of external speaker devices 100, and
outputs the supplied audio signal to the connected external speaker device 100. This audio signal
becomes an audio signal whose frequency characteristic has been adjusted by the sound quality
adjustment unit 22 based on the external speaker parameter. The above is the description of the
configuration of the television 1.
[0043]
Next, the operation of the television 1 will be described. An external speaker device 100 is
connected to the connection terminal 29 of the television 1. The type of the external speaker
device is "external speaker device C". Further, as shown in FIG. 4, it is assumed that external
speaker parameters corresponding to “external speaker device A” and “external speaker
device B” are stored in the storage unit 25.
[0044]
When the user of the television 1 wants to emit sound from the internal speaker 28, when the
internal speaker is selected by operating the operation unit 24, the switching information
indicating the internal speaker from the operation unit 24 is the parameter setting unit 23 and
the switching supply unit Output to 27. Then, an internal speaker parameter is set in the sound
quality adjustment unit 22. As a result, an audio signal whose frequency characteristic has been
adjusted based on the internal speaker parameter is emitted from the internal speaker 28.
[0045]
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14
Subsequently, when it is desired to emit sound from the external speaker device 100, the user
operates the operation unit 24 to select the connection terminal, and the type of the external
speaker device 100 connected to the connection terminal 29 "External speaker device C" Enter
As a result, switching information indicating the connection terminal is output from the operation
unit 24 to the parameter setting unit 23 and the switching supply unit 27. The parameter setting
unit 23 further outputs type information indicating “external speaker device C”.
[0046]
When the parameter setting unit 23 determines that the external speaker parameter
corresponding to the “external speaker device C” to be read out is not stored in the storage
unit 25, the type information indicating “external speaker device C” to the data acquisition
unit 40 Output
[0047]
When the type information is input from the parameter setting section 23, the data acquisition
section 40 communicates with the server 200 via the network, and transmits the external
speaker parameter corresponding to the "external speaker device C" indicated by the type
information. It requests the server 200.
When receiving the external speaker parameter corresponding to “external speaker device C”
from server 200, data acquisition unit 40 stores the external speaker parameter as an external
speaker parameter corresponding to external speaker device C ”. Remember.
[0048]
Then, when the external speaker parameter corresponding to the “external speaker device C”
is stored in the storage unit 25, the parameter setting unit 23 reads the external speaker
parameter and sets it in the sound quality adjustment unit 22. As a result, an audio signal whose
frequency characteristic has been adjusted based on the external speaker parameter
corresponding to the “external speaker device C” is supplied to the connection terminal 29.
[0049]
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15
The external speaker device 100 receives an audio signal from the connection terminal 29 and
emits the audio signal. Here, since the audio signal is not supplied to the internal speaker 28, the
internal speaker 28 does not emit sound.
[0050]
Here, the type of the external speaker device 100 connected to the connection terminal 29 is
“external speaker device C”, but the type of the external speaker device 100 connected to the
connection terminal 29 is changed, for example, “external speaker In the case of “device A”,
“external speaker device A” is input by the operation of the operation unit 24, and the
parameter set in the sound quality adjustment unit 22 is stored in the “external speaker device
A” stored in the storage unit 25. It may be changed to the corresponding external speaker
parameter.
[0051]
As described above, the television 1 according to the embodiment of the present invention copes
with the type of the external speaker device 100 separately from the parameter for the internal
speaker for the parameter at the time of adjusting the frequency characteristic of the audio signal
set in the sound quality adjustment unit A plurality of external speaker parameters are stored in
the storage unit 25.
By selecting an external speaker parameter corresponding to the type of the external speaker
device 100 connected to the connection terminal 29 and setting it in the sound quality
adjustment unit 22, similar frequency characteristics can be obtained even if the type of the
external speaker device 100 changes. Can emit noise.
[0052]
Then, since the frequency characteristic is adjusted in the television 1 instead of adjusting the
frequency characteristic of the audio signal in the external speaker device 100, the external
speaker device 100 does not need to use the adjustment circuit of the acoustic characteristics,
which is low. It can be a cost device. Further, since the adjustment of the frequency characteristic
does not have to be performed by the arrangement of the speakers, the degree of freedom in the
08-05-2019
16
design of the external speaker device 100 can be improved.
[0053]
Furthermore, it is possible to emit sound utilizing the frequency characteristics of the external
speaker device 100 itself. That is, in the general external speaker device 100, the adjustment of
the frequency characteristic is performed, and the adjustment of suppressing the output of the
high sensitivity frequency band is performed in order to match the low sensitivity frequency
band. On the other hand, the external speaker device 100 connected to the television 1 according
to the embodiment of the present invention does not need to perform such adjustment, and a
high sensitivity frequency band can emit sound with high sensitivity. It can be emitted efficiently.
[0054]
In addition, even if the external speaker parameter corresponding to the type of the external
speaker device 100 connected to the connection terminal 29 is not stored in the storage unit 25,
the data acquisition unit 40 transmits the external speaker parameter to the server via the
network. As it can be acquired from 200, it is possible to cope with various types of external
speaker devices 100. Therefore, even for the external speaker device 100 developed after the
time of manufacture of the television 1 according to the embodiment of the present invention,
the external speaker parameter corresponding to the type of the external speaker device 100 is
set in the sound quality adjustment unit 22. be able to.
[0055]
A specific example of the above-described effect of being able to efficiently emit sound will be
described using FIGS. 5 and 6. As shown in FIG. 5A, the external speaker device 100 has a
tweeter 101-1 that emits a high frequency band and a woofer 101-2 that emits a low frequency
band. Even if an audio signal with the same output level is input in each frequency band, the
tweeter 101-1 and the woofer 101-2 are different from the efficiency of the tweeter 101-1 and
the woofer 101-2. As shown, the output sound pressure may differ depending on the frequency
band, and the sensitivity to the input audio signal may differ. Conventionally, the efficiency of the
highly efficient speaker (the tweeter 101-1 in the case of FIG. 5) has been reduced so that the
sensitivity does not differ depending on the frequency band, and the characteristic shown by the
08-05-2019
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broken line is obtained. This is realized, for example, by using the resistors R1 and R2 as shown
in FIG. 6 (a).
[0056]
On the other hand, in the television 1 according to the embodiment of the present invention, the
sound quality adjustment unit 22 can adjust the audio signal according to the type of the
external speaker device 100 connected to the connection terminal 29. When the external
speaker device 100 has a frequency characteristic as shown by the solid line in FIG. 5B, the
external speaker parameter corresponding to the type of the external speaker device 100 is as
shown in FIG. 5C. It is a parameter that relatively increases the output level of the audio signal in
the low frequency band. Then, since the sound quality adjustment unit 22 adjusts the frequency
characteristics of the audio signal according to this parameter, the external speaker device 100
does not use the resistors R1 and R2 as shown in FIG. Even if a high speaker is used as it is, the
output sound pressure can be made to have no frequency dependency. As a result, the driving
power of the external speaker device 100 can be reduced, and efficient sound emission becomes
possible.
[0057]
Although the embodiments of the present invention have been described above, the present
invention can be implemented in various aspects as follows.
[0058]
Modified Example 1 In the embodiment described above, the data acquisition unit 40 acquires
the external speaker parameter from the server 200 via the network, but may acquire it from
other than the server 200.
For example, as shown in FIG. 7, it may be acquired from the external speaker device 100
connected to the connection terminal 29. In this case, the configuration of the external speaker
device 100 may be as shown in FIG. That is, the external speaker device 100 includes the
speaker 101, an audio signal input terminal 102 for inputting an audio signal (two channels of
Lch and Rch in this modification) supplied from the connection terminal 29 to the corresponding
speakers 101, and A parameter storage unit 103 storing external speaker parameters
corresponding to the external speaker device 100 may be provided.
08-05-2019
18
[0059]
The parameter storage unit 103 is a tag using an RFID (Radio Frequency IDentification)
technology, and an external speaker parameter is stored in the storage unit. Further, the data
acquisition unit 40 may be a reader capable of wirelessly communicating with the tag. Thus, the
data acquisition unit 40 can acquire the external speaker parameter corresponding to the
external speaker device 100 from the external speaker device 100. The reader of the data
acquisition unit 40 may be provided in a remote controller or the like having a wireless
communication unit capable of wireless communication.
[0060]
The parameter storage unit 103 may be storage means such as a flash memory for storing
parameters for external speakers, a ROM (Read Only Memory), or the like. The data acquisition
unit 40 may be connected to the parameter storage unit 103 by wire or wirelessly to acquire the
external speaker parameter. The parameter storage unit 103 may be a storage medium such as a
flexible disk or a CD-ROM separate from the external speaker device 100. In this case, the data
acquisition unit 40 stores the data in the storage medium. It may be read out means for reading
out the external speaker parameter. As described above, the data acquiring unit 40 may acquire
the external speaker parameter from the outside of the television 1 in any manner.
[0061]
<Modification 2> In the embodiment described above, the type information indicating the type of
the external speaker device 100 connected to the connection terminal 29 allows the user to
determine the type of the external speaker device 100 and operate the operation unit 24.
Although the identification unit 41 for identifying the type of the external speaker device 100 is
provided as shown in FIG. Type information indicating the type of the identified external speaker
device 100 may be generated. Hereinafter, an example of the configuration in this case will be
described.
[0062]
08-05-2019
19
First, as shown in FIG. 10, the external speaker device 100 is provided with the identification
resistor 104 of a different resistance value for each type, and the storage unit 25 has a plurality
of external speaker parameters corresponding to the resistance value. Remember. Then, the
identification unit 41 measures the resistance value of the identification resistor 104 via the
measurement terminal 105 and outputs the measured resistance value to the operation unit 24,
and the operation unit 24 outputs type information indicating the resistance value to the
parameter setting unit 23. . Then, the parameter setting unit 23 may read out the external
speaker parameter corresponding to the resistance value indicated by the type information from
the storage unit 25 and set it in the sound quality adjustment unit 22. As described above, the
identification unit 41 can identify the type of the external speaker device 100 by measuring the
resistance value of the identification resistor 104 of the external speaker device 100.
[0063]
The resistance value corresponding to the external speaker device 100 may be a resistance value
in a predetermined range in consideration of a certain degree of variation in the resistance value.
That is, it is desirable that the resistance values corresponding to each of the plurality of external
speaker parameters stored in the storage unit 25 be associated with each other within a
predetermined range. The external speaker parameters stored in the storage unit 25 are the
same as in the embodiment, and a correspondence table correlating the type of the external
speaker device 100 with the resistance value is stored in the storage unit 25. Parameters to be
read out may be determined from the correspondence table and the type information.
[0064]
Further, as shown in FIG. 11, a light emitting element such as an LED (Light Emitting Diode) 110
may be provided in series with the identification resistor 104 to emit light when the
identification resistor 104 is measured. . As an example of the configuration, the identification
unit 41 may have a constant current source 411 that supplies the current ic to the identification
resistor 104 and the LED 110, and a voltage determination unit 412 that measures the voltage
between the two measurement terminals 105. . Then, the resistance value may be calculated
from the measured voltage and current ic. And if LED110 is arrange | positioned as shown in FIG.
3, it can be visually recognized whether the resistance value of the identification resistor 104 is
being measured. If the resistance value of the identification resistor 104 is made sufficiently
larger than the resistance value at the time of light emission of the LED 110, the voltage drop in
the LED 110 can be ignored. In addition, when the resistance value of the identification resistor
08-05-2019
20
104 is low, each resistance value is set so that the resistance value obtained by adding the
resistance value at the time of light emission of the LED 110 becomes the resistance value
indicating the type of the external speaker device 100. Good.
[0065]
Second, as shown in FIG. 3, the external speaker apparatus 100 draws a figure 107 such as a bar
code or a two-dimensional code which differs depending on the type. Then, the identification unit
41 optically reads the figure 107 drawn on the external speaker device 100 by a scanner using
an LED, an optical sensor, a CCD (Charge Coupled Device) or the like, and identifies the type of
the external speaker device 100. Just do it. The correspondence table may be prepared as
described above for the correspondence between the figure and the type, or the external speaker
parameter may be directly associated with the figure.
[0066]
Thirdly, as shown in FIG. 12, the external speaker device 100 is provided with an identification
information storage unit 106 such as a flash memory or ROM for storing identification
information for identifying the type. Then, the identification unit 41 may acquire the
identification information stored in the identification information storage unit 106 to identify the
type of the external speaker device 100. If the identification information storage unit 106 in
which the identification information is stored is, for example, a storage unit of a tag using RFID
technology, and the identification unit 41 is provided with a reader that reads information stored
in the storage unit of the tag, wireless Identification information can also be obtained by
[0067]
Further, the identification information storage unit 106 may be configured as shown in FIG. That
is, the identification information storage unit 106 is connected to the plurality of measurement
terminals 105 and the reference terminal 108. Each of the plurality of measurement terminals
105 is in a short circuit state or an open state with the reference terminal 108. Then, the
combination of the position of the measurement terminal 105 and the short circuit state and the
open state corresponding to each measurement terminal 105 may be used as identification
information for identifying the type of the external speaker device 100. In this case, the
identification unit 41 recognizes whether each of the plurality of measurement terminals 105 is
08-05-2019
21
in a short circuit state or an open state by supplying a minute current to each of the
measurement terminals 105, and so on. It is sufficient to identify 100 types. Thus, for example,
when there are n measurement terminals 105, 2 <n> types of external speaker devices 100 can
be shown.
[0068]
As noted above, the type of external speaker device 100 can be identified in a variety of ways.
The identification unit 41 is provided in the remote controller of the operation unit 24 so that the
user can easily perform the process of identifying the type of the external speaker device 100. In
this case, the remote controller may transmit the identification result to the receiving unit of the
operation unit 24 using a wireless communication unit. Further, in the case where the external
speaker device 100 is provided with the measurement terminal 105, a line connecting the
connection terminal 29 of the television 1 and the external speaker device 100, and a line
connecting the identification unit 41 and the measurement terminal 105. May be combined into
one connection connector, and the connection between the television 1 and the external speaker
device 100 may be facilitated.
[0069]
<Modification 3> In the embodiment described above, the storage unit 25 stores the internal
speaker parameter and the plurality of external speaker parameters, but only one parameter may
be stored. In this case, as shown in FIG. 14, the operation unit 24 outputs switching information
and type information to the data acquisition unit 40. When the switching information indicates
the internal speaker, the data acquiring unit 40 acquires the internal speaker parameter from the
server 200 and stores the parameter in the storage unit 25 while the switching information
indicates the connection terminal. The external speaker parameter corresponding to the type of
the external speaker device 100 indicated by the type information is acquired from the server
200 and stored in the storage unit 25. At this time, only the parameter acquired last is stored in
the storage unit 25. The parameter setting unit 23 reads the parameters stored in the storage
unit 25 and sets the parameters in the sound quality adjustment unit 22. In this way, since the
storage unit 25 need only store one parameter, the storage capacity may be small, and a low cost
storage unit can be provided. If the content indicated by the type information includes the
internal speaker, the switching information may indicate the internal speaker if the type
information indicates the internal speaker, so the switching information is used. It can also be
avoided.
08-05-2019
22
[0070]
Further, in the present modification, the storage unit 25 may store the internal speaker
parameters in a stored state, and may store only one external speaker parameter. In this case, the
switching information output from the operation unit 24 may be output to the parameter setting
unit 23 as in the embodiment. Then, when the switching information indicates the connection
terminal, the parameter setting unit confirms that the external speaker parameter of the storage
unit 25 has been updated by the data acquisition unit 40, and then stores the information in the
storage unit 25. One external speaker parameter may be read out and set in the sound quality
adjustment unit 22.
[0071]
<Modification 4> In the embodiment described above, the television 1 including the video signal
input unit 11 and the display unit 12 is described. However, among the configurations of the
television 1, the television 1 has configurations other than the video signal input unit 11 and the
display unit 12 It may be an audio signal supply device. That is, the television 1 may be
configured by the audio signal supply device, the video signal input unit 11 and the display unit
12. Further, the audio signal supply device may not have the internal speaker 28, and the sound
may be emitted from the external speaker device 100. In this case, it is not necessary to use the
internal speaker parameters, the switching information, and the switching supply unit 27.
[0072]
<Modification 5> In the embodiment described above, the terminal to which the external speaker
device 100 is connected is the connection terminal 29 to which the audio signal from the
amplification unit 26 is supplied, but as shown in FIG. A second connection terminal 30 may be
provided to which an audio signal before amplification in the unit 26, that is, an audio signal
whose frequency characteristic has been adjusted in the sound quality adjustment unit 22, is
supplied. In this case, when the switching supply unit 31 is provided between the sound quality
adjustment unit 22 and the amplification unit 26 and the switching information from the
operation unit 24 indicates an internal speaker, the connection terminal is indicated to the
amplification unit 26. For this purpose, an audio signal whose frequency characteristic has been
adjusted and which is input from the sound quality adjustment unit 22 may be output to the
amplification unit 26 and the second connection terminal 30.
08-05-2019
23
[0073]
In addition, when the switching information indicates the connection terminal, the switching
supply unit 31 also acquires the type information, and when the external speaker device 100
indicated by the type information includes the amplifier, the audio signal is transmitted to the
second connection terminal. In the case where the audio signal is output and does not have an
amplifier, an audio signal may be output to the amplification unit 26. Here, as to whether or not
the external speaker device 100 indicated by the type information has an amplifier, it is input by
the operation of the operation unit 24 so that the type information includes the presence /
absence of amplifier, and based on this information The determination may be made, or the
storage unit 25 may store a correspondence table between the type of the external speaker
device 100 and the presence or absence of the amplifier, and the determination may be made
with reference to the type information and the correspondence table.
[0074]
In this way, even when the external speaker device 100 has an amplifier for amplifying the input
audio signal, it can be connected to the second connection terminal 30, so the external device can
be connected regardless of the presence or absence of the amplifier The speaker device 100 can
be connected to the television 1. When the external speaker device 100 has an amplifier and
further has a circuit for adjusting the frequency characteristic, the adjustment of the audio signal
in the sound quality adjustment unit 22 is not performed, that is, the signal is output with the flat
characteristic. Parameters may be set. The determination as to whether or not a circuit for
adjusting the frequency characteristic is provided may be performed in the same manner as the
determination as to the presence or absence of the amplifier.
[0075]
<Modification 6> In the embodiment described above, the sound quality adjustment unit 22 is an
equalizer that adjusts the frequency characteristics of the audio signal, but the sound quality
adjustment unit 22 changes due to the difference in the arrangement of the speakers 101 in the
external speaker device 100, the difference in the characteristics, etc. Any characteristic may be
adjusted as long as the acoustic characteristic is adjusted. For example, the surround effect may
change according to the distance between the speakers 101 or the like. Parameters for making
08-05-2019
24
such surround effects constant even if the type of the external speaker device 100 changes are
stored in the storage unit 25 corresponding to the type of the external speaker device 100. Then,
the sound quality adjustment unit 22 may perform the adjustment to give the surround effect
according to the set parameter to the input audio signal.
[0076]
<Modification 7> In the above-described embodiment, the audio signal supplied to the internal
speaker 28 and the connection terminal is an audio signal amplified by the same amplification
unit 26, but each of the audio signals is amplified by different amplification units 26. An audio
signal may be used. In this case, as shown in FIG. 16, an amplification unit 26-1 is provided
between the switching supply unit 27 and the internal speaker 28, and an amplification unit 26-2
is provided between the switching supply unit 27 and the connection terminal 29. You should do
it. In this case, the amplifier 26-1 is a low-power amplifier matched to the internal speaker 28,
and the amplifier 26-2 is a high-power amplifier because it corresponds to various external
speaker devices 100. it can.
[0077]
Here, with regard to the amplification unit 26-2, when the input impedance differs depending on
the type of the external speaker device 100 connected to the connection terminal 29, the output
impedance may be changed according to the input impedance, Different connection terminals 29
may be provided for each output impedance. When changing the output impedance in this
manner, the correspondence table indicating the correspondence between the type of the
external speaker device 100 and the input impedance is stored in the storage unit 25, and the
amplification unit 26-2 outputs the output from the operation unit 24. The input impedance of
the external speaker device 100 connected to the connection terminal 29 may be recognized
based on the type information and the correspondence table stored in the storage unit 25. The
output impedance may be changed similarly for the amplification unit 26 in the embodiment.
[0078]
<Modification 8> In the embodiment described above, the sound quality adjustment unit 22
adjusts the frequency characteristic of the audio signal based on the set parameters, and
performs the same adjustment regardless of the installation condition of the external speaker
08-05-2019
25
device 100. However, the adjustment contents may be changed according to the installation
situation. In this case, as shown in FIG. 17, the storage unit 25 stores correction data
corresponding to an installation situation such as a corner of a room near a wall. Then, when the
installation status is input by the operation of the operation unit 24, the installation status
information is output from the operation unit 24 to the parameter setting unit 23, and the
parameter setting unit 23 stores correction data corresponding to the installation status
indicated by the installation status information. Read out from section 25. Then, the external
speaker parameter set in the sound quality adjustment unit 22 or the set parameter may be
corrected based on the read correction data.
[0079]
When the external speaker device 100 is installed near the wall, the effect of the wall reflection
of the bass becomes large, and the bass becomes enhanced in sound emission. This is installed at
a corner of the room, and the effect increases as the number of nearby walls increases. The
correction data is data for correcting a parameter set in the sound quality adjustment unit 22 in
order to suppress such an effect, and is, for example, data for reducing the output of the low
frequency band. Then, by performing correction using the correction data on the external
speaker parameter, adjustment is performed such that the output of the low frequency band of
the audio signal is reduced compared to the case where the correction is not performed. As a
result, the external speaker device 100 can emit sound with stable frequency characteristics even
if the installation situation changes, since the audio signal is also adjusted in advance for the
portion where the bass is strengthened by the wall surface reflection. The present invention is
not limited to the installation situation as long as the frequency characteristic is corrected. For
example, the frequency characteristics may be corrected according to the viewing content such
as movie, music, news, etc., and the video signal may be corrected together to change the
brightness, contrast and the like.
[0080]
Here, when the installation status of the external speaker device 100 is input by the operation of
the operation unit 24, the CPU (not shown) refers to the correction data stored in the storage
unit 25 and displays the display surface 12-D of the display unit 12 Alternatively, as shown in
FIG. 18, a display may be provided to indicate the installation status. Then, the installation status
information may be output by moving the pointer P by the operation of the operation unit 24
and selecting the installation status desired to be input.
08-05-2019
26
[0081]
<Modification 9> In the embodiment described above, the sound quality adjustment unit 22 is an
equalizer that adjusts the frequency characteristics of the audio signal, but may further have a
function of adding another acoustic effect such as a reverberation effect. . What kind of acoustic
effect is to be added may be determined by the operation of the operation unit 24. For example,
as in the eighth modification, the display surface 12-D is displayed and selected as shown in FIG.
May be At this time, when "room status" is selected, a display in which the room size, shape, wall
surface reflectance, etc. can be selected as the room status is displayed, and when "sound effect"
is selected, the sound effect to be added is selected. The display can be done.
[0082]
<Modification 10> The external speaker parameter stored in the storage unit 25 in the
embodiment described above emits the sound and measures the acoustic characteristics such as
frequency characteristics for each type of external speaker device 100. It may be a parameter
generated by analysis, or may be a parameter generated by simulation from the speaker, the
speaker arrangement, the housing, the internal structure, etc. of the external speaker device 100.
That is, as long as the external speaker parameter is generated based on the unique frequency
characteristic of the external speaker device 100, it may be generated in any manner, and a
dedicated external speaker parameter corresponding to the type of the external speaker device It
should just be.
[0083]
<Modified Example 11> The sound quality of the internal speaker 28 is deteriorated due to the
thinning of the television 1 in the embodiment described above. An external speaker device 100
is provided to improve the sound quality. Therefore, it is desirable that the length of each of the
vertical, horizontal, and depth of the external speaker device 100 be larger than the depth of the
housing 50 of the television 1 (in the direction perpendicular to the display surface 12-D). In
addition, it is desirable that the volume of the enclosure in which the speakers of the external
speaker device 100 are stored be larger than the volume of the enclosure in which the internal
speaker 28 such as the housing 50 is stored.
08-05-2019
27
[0084]
<Modification 12> The external speaker device 100 connected to the television 1 in the
embodiment described above is, for example, as shown in FIG. Hereinafter, another example of
the external speaker device 100 connected to the television 1 will be described.
[0085]
As shown in FIG. 19A, the external speaker device 100 according to the first example has a
rotary table 150 near the center of the upper surface of the housing 160. By placing the
television 1 on the turntable 150, the display surface 12-D of the television 1 can be easily
oriented in a desired direction. In addition, a cylindrical opening 151 may be provided at the
center of the rotation table 150. FIG. 19B is a view showing a cross-sectional shape in a plane
passing through the central axis of the rotary table 150 in the case where the opening 151 is
provided. The rotation support unit roller 152 is provided between the rotation table 150 and
the housing 160, and can rotate the rotation table 150 on the housing 160. Further, a convex
portion is provided on the case 160 corresponding to the central axis portion of the rotary table
150, and a concave portion is provided on the rotary table 150 so as to correspond thereto.
Thereby, the rotating shaft 52 is maintained.
[0086]
Then, if the support base 51 of the television 1 can be removed from the rotary shaft 52, the
housing 50 of the television 1 can be supported by inserting the rotary shaft 52 of the television
1 into the opening 151. it can. At this time, fixing means for fixing the relative positional
relationship between the rotary shaft 52 and the rotary table 150 may be provided inside the
opening 151 so that the rotary shaft 52 and the rotary table 150 are in a coupled state. Good.
Note that the audio signal input terminal 102 for connecting to the connection terminal 29 of the
television 1 may be provided on the upper surface portion of the rotary table 150 or the surface
in the opening 151. When providing in the surface in the opening part 151, it is desirable for the
rotating shaft 52 of the television 1 to be provided with the connection terminal 29. As shown in
FIG. In this way, the relative positional relationship between the television 1 and the audio signal
input terminal 102 does not change even when the rotary table 150 is rotated. The turntable
150 can be rotated without limitation.
08-05-2019
28
[0087]
As shown in FIG. 20A, the external speaker device 100 as a second example has two rectangular
housings (hereinafter referred to as housings 170-A and 170-) in which the speaker 101 is
provided on one surface. B) and a surface on the opposite side to the surface on which the
speaker 101 is provided, a U-shaped housing 170 configured of a housing (hereinafter referred
to as It has a U-shaped shape. With such a shape, the support base 51 of the television 1 and the
rotary shaft 52 can be avoided, and therefore, the upper surface of the television stand or the like
on which the television 1 is installed and the housing 50 of the television 1 The external speaker
device 100 can be made effective by utilizing the space created between the two. In FIG. 20 (a),
the connection portion between the casings 170-A and 170-B and the casing 170-C has a shape
with a corner, but it is preferable if it is substantially U-shaped. It may be connected by a curved
surface with the corner dropped.
[0088]
Such an external speaker device 100 can also be provided with a subwoofer 180 that outputs
sound in a low frequency band in the area of the housing 170-C. In addition, as shown in FIG.
20A, the inner surface of the U-shaped housing 170, that is, each surface where the housing 170A and the housing 170-B face each other, and the housing 170-C It is desirable to provide the
audio signal input terminal 102 on any of the surfaces connecting the surfaces.
[0089]
Furthermore, as shown in FIG. 20 (b), such an external speaker device 100 has a structure in
which a space is provided on a part of the lower surface side of the U-shaped housing 170. By
setting it as the structure which floats from this, a part of support stand 51 of television 1 can be
put in this space. By doing this, the external speaker device 100 can be miniaturized as long as
there is a distance between the housing 170 -A and the housing 170 -B to such an extent that the
rotary shaft 52 of the television 1 can be avoided. . Further, as shown by a broken line in FIG. 20
(b), the length of the housing 170-C can be expanded and contracted to make the distance
between the housing 170-A and the housing 170-B variable. The part 190 may be provided. In
this way, the size can be adjusted appropriately according to the size of the housing 50 of the
television 1, the support 51, and the rotary shaft 52. In addition, this expansion-contraction part
190 may be provided in housing | casing 170-A and 170-B.
08-05-2019
29
[0090]
It is a block diagram showing composition of a television concerning an embodiment. It is an
explanatory view showing an example of the appearance of the television concerning an
embodiment. It is explanatory drawing which shows an example of the external appearance of
the external speaker apparatus which concerns on embodiment. It is explanatory drawing of the
memory content of the memory | storage part which concerns on embodiment. It is explanatory
drawing which shows an example of the external appearance of the external speaker apparatus
which concerns on embodiment, and an example of a frequency characteristic. It is an
explanatory view showing the circuit composition of the external speaker device concerning an
embodiment. It is a block diagram which shows the structure of the television which concerns on
the modification 1. FIG. It is a block diagram which shows an example of a structure of the
external speaker apparatus which concerns on the modification 1. FIG. FIG. 18 is a block diagram
showing the configuration of a television according to a second modification. FIG. 16 is a block
diagram showing an example of the configuration of an external speaker device according to a
second modification. FIG. 12 is an explanatory view showing an example of a circuit
configuration of an external speaker device according to a modification 2; FIG. 16 is a block
diagram showing an example of the configuration of an external speaker device according to a
second modification. FIG. 12 is an explanatory view showing an example of a circuit
configuration of an external speaker device according to a modification 2; FIG. 18 is a block
diagram showing the configuration of a television according to a third modification; FIG. 21 is a
block diagram showing a configuration of a television according to a fifth modification. FIG. 18 is
a block diagram showing a configuration of a television according to a modification 7; FIG. 21 is
an explanatory diagram of storage contents of a storage unit according to a modification 8; FIG.
21 is an explanatory view showing an example of display on a display surface according to
Modified Example 8; FIG. 21 is an explanatory view showing an example of the appearance of an
external speaker device according to a modification 12; FIG. 21 is an explanatory view showing
an example of the appearance of an external speaker device according to a modification 12;
Explanation of sign
[0091]
DESCRIPTION OF SYMBOLS 1 ... TV, 10 ... Signal output part, 11 ... Video signal input part, 12 ...
Display part, 12-D ... Display surface, 21 ... Audio signal input part, 22 ... Sound quality
adjustment part, 23 ... Parameter setting part, 24 ... Operation unit, 25 storage unit 26, 26-1, 262 amplification unit 27, 31 switching supply unit 28 internal speaker 29 connection terminal 30
second connection terminal 40 data acquisition Unit 41 Identification unit 411 Constant current
08-05-2019
30
source 412 Voltage discrimination unit 50 Case 51 Support base 52 Rotary shaft 100 External
speaker device 101 Speaker 101-1 tweeter , 102-2: woofer, 102: audio signal input terminal,
103: parameter storage unit, 104: identification resistor, 105: measurement terminal, 106:
identification information storage unit, 107: graphic, 108: reference terminal, 110: LED ,
DESCRIPTION OF SYMBOLS 50 ... Rotation base, 151 ... Opening part, 152 ... Rotation support
part roller, 160 ... Housing | casing, 170 ... U-shaped housing | casing 170-A, 170-B, 170-C ...
Housing | casing, 180 ... Subwoofer, 190 ... Expansion unit, 200 ... Server
08-05-2019
31
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