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JP2004112677

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DESCRIPTION JP2004112677
The present invention provides an electronic volume control device that is highly versatile and
can ensure good remote controllability, and a remote controller thereof. A correspondence
relationship storage unit 132 of a band radio terminal 13 stores a correspondence relationship
between a common volume value Dcom and a specific volume value Dvol1. The current volume
value storage unit 131 stores the common volume value Dcom. The attenuation factor of the
electronic volume 37 is controlled based on the common volume value Dcom. In response to the
volume operation of the volume switch 39, the volume value conversion unit 133 increases or
decreases the common volume value Dcom currently stored in the volume value storage unit 131
based on the correspondence relationship registered in the correspondence relationship storage
unit 132. . The volume value updating unit 134 updates and registers the increased or decreased
common volume value Dcom in the current volume value storage unit 131. The volume value
notification unit 135 notifies the terminal 14 of the common volume value Dcom after the
increase and decrease. [Selected figure] Figure 4
Electronic volume control device and remote controller thereof
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
electronic volume control device remotely controlled by a remote controller and the remote
controller, and in particular, based on a volume control signal defined in a standard specification
of blue tooth. The present invention relates to a remotely operated electronic volume control
device and its remote controller. [0002] A technology for remotely controlling an electronic
volume mounted on an audio player by operating a volume control key provided on a remote
controller (hereinafter referred to as a remote controller) is, for example, It is disclosed in
Japanese Patent Application Laid-Open No. 5-308230. The remote control may be provided with
a "+ (plus)" key and a "-(minus)" key as volume adjustment keys, and may further be provided
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with a "MUTE" key for attenuating the volume to the lowest level at once. [0003] On the other
hand, in the blue tooth (Blue tooth), which is a global communication standard, the sound volume
of an acoustic player mounted on the head, that is, a headset, and a sound source (AudioGateway)
such as a cellular phone wirelessly connected thereto. The standard for remote control from the
side is set. In this standard, 16 steps from “0” to “15” are prepared as the volume
adjustment steps. Here, for example, in the volume control between the television and its remote
control, an absolute volume value is not instructed from the remote control to the television, but
the volume is increased by one step, one step. A signal that relatively changes the current volume
is output, such as “down”. On the other hand, the player and the remote controller (sound
source) compliant with the blue tooth standard recognize the current volume value by mutually
notifying each other in 16 levels of the volume value, and the current volume value is “8 If the
"+" button of the remote control is pressed in the case of "," the volume value "9" is indicated
from the remote control to the player side. In addition, when the volume value is changed from
"9" to "10" on the player side, the information is also notified to the remote control. Therefore,
next, when the "+" button is pressed on the remote control side, the volume value "11" is
designated from the remote control to the reproduction machine side. SUMMARY OF THE
INVENTION When the electronic volume of the headset provided on the helmet is to be remotely
controlled by the remote control on the vehicle side or the portable terminal, the electronic
volume of the headset is operated in a state of wearing the glove. In consideration of this, it is
desirable to simplify by reducing the number of volume control steps.
For example, it is desirable to narrow down to about four stages such as "mute", "small volume
for stopping", "medium volume for low and medium speed", and "large volume for high speed".
However, if the number of volume control steps of the player is reduced, the following problems
may occur. In FIG. 11, when the volume adjustment step number of the remote control is reduced
to four steps in accordance with the volume adjustment step number “4” of the playback
apparatus A, the reproduction of the volume adjustment step number “10” is performed by
this remote control. Even if the device B is remotely operated, signals corresponding to the
volume values “5” to “10” can not be output, so the volume of the reproducing device B can
not be raised sufficiently. On the other hand, in order to cope with such technical problems, as
shown in FIG. 12, when the volume values are discontinuously allocated to the respective volume
adjustment steps “1” to “4” on the remote control side, Like the player A, the volume value
may be similarly assigned to each volume adjustment step, but like the player B, if the number of
volume adjustment steps is “10”, the volume can not be set by the remote control The value
exists. In addition, if the volume adjustment steps do not match as in the case of the playback
device C, remote control by the remote control is disabled. Further, as shown in FIG. 13, when the
volume adjustment step number on the remote control side is “16”, “1” to “4” from the
remote control side in the playback apparatus A with the volume adjustment step number “4”.
The electronic volume can be controlled to the instructed volume value as long as the volume
value is instructed in the range of “.” However, when the volume value "4" is exceeded and the
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"+" key is continuously pressed, for example, the volume value rises to "8", then the "-" key of the
remote control is pressed to lower the volume. Also, each time, "7", "6", "5" are notified as the
volume value, and the volume value does not decrease during this period, so the volume does not
decrease even though the "-" key is pressed An inconvenience arises. Also, as in the case of the
playback apparatus B, if the volume value is allocated discontinuously even if the volume
adjustment step number is “4”, for example, after the volume value “5” is notified from the
remote control side, Even if the "+" key is kept pressed, the volume does not increase until the
volume value reaches "10". Such a problem similarly occurs even if the number of volume control
steps is increased as in the case of the player C. As described above, there is a technical problem
that the operability with the remote control is impaired if the volume adjustment step number of
the playback device is reduced compared to “16” which is the blue tooth standard
specification.
Although such a technical task can be solved by separately preparing a dedicated remote control
applied to the volume control step number of the playback machine, the versatility of the device
is impaired and it is a hindrance to the combination with other devices. It is not compatible with
the concept of blue tooth that emphasizes versatility. An object of the present invention is to
solve the problems of the prior art described above, and to provide an electronic volume control
device capable of securing good remote controllability and a remote controller thereof. In order
to achieve the above object, the present invention takes the following measures in an electronic
volume control device remotely controlled by a remote controller and the remote controller.
There is a feature in the point. (1) The electronic volume control device of the present invention
is characterized in that the i-th common volume value Dcom [i] (i = 1 to N) in the N-step common
scale and the j-th specific volume in the M-step eigenscale A means for managing the
correspondence with the value Dvol1 [j] (j = 1 to M), a means for receiving the common volume
value Dcom from the remote controller, a means for storing the common volume value Dcom,
and the common volume value An electronic volume whose attenuation factor is controlled based
on Dcom, a volume switch indicating a unique volume value Dvol1 on the unique scale, and the
instructed unique volume value Dvol1 are based on the correspondence relationship to a
common volume value Dcom. And the common volume value Dcom after the conversion is
updated and registered in the storage unit. (2) The remote controller according to the present
invention has the i-th common volume value Dcom [i] (i = 1 to N) in the N-stage common scale
and the k-th unique volume value Dvol 2 in the L-scale eigenscale Means for managing
correspondence with [k] (k = 1 to L), means for storing current common volume value Dcom,
volume switch for specifying unique volume value Dvol2 on the unique scale, and the instruction
A means for converting the inherent volume value Dvol2 into the common volume value Dcom
based on the correspondence relationship, a means for updating and registering the converted
common volume value Dcom in the storage means, and the common volume value after the
conversion And means for transmitting Dcom to the electronic volume control device. According
to the feature (1) described above, the attenuation rate of the electronic volume is indicated by
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the volume value Dcom on the common scale from the remote controller. In the electronic
volume control device, the attenuation factor of the electronic volume is indicated by the volume
value Dvol1 on the intrinsic scale, but the inherent volume value Dvol1 is converted to the
common volume value Dcom, and the attenuation factor of the electronic volume is equal to the
common volume value Dcom. It is controlled based on.
Therefore, the electronic volume control apparatus can adopt the eigenscale for volume control
while securing the versatility of the apparatus and the remote controller. According to the feature
(2) described above, in the remote controller, the attenuation factor of the electronic volume can
be designated by the volume value Dvol2 on the unique scale, but after this unique volume value
Dvol1 is converted to the common volume value Dcom , Sent to the electronic volume control
device. In the electronic volume control device, the attenuation rate of the electronic volume is
controlled based on the common volume value Dcom. Therefore, the remote controller adopts the
eigenscale for volume control while securing versatility of the own device and the electronic
volume control device. it can. Preferred embodiments of the present invention will be described
in detail below with reference to the drawings. FIG. 1 is a view showing an example of an
intercom communication mode to which the present invention is applied, and a vehicle A is
mounted with an on-vehicle wireless terminal 14 as a remote controller of the present invention.
The helmets 1a, 1b, 1c worn by the occupants of the vehicles A, B are equipped with a
microphone including the microphone 11 and the speaker 12, and a headset including the
portable wireless terminal 13 as the electronic volume control device of the present invention.
The on-board wireless terminal 14 and each portable wireless terminal 13 conform to the
Bluetooth standard, and the on-board wireless terminal 14 is in the master mode and the other
portable wireless terminals 13 are in the slave mode on a piconet containing these as
accommodation terminals. Perform wireless communication with each other while operating. FIG.
2 is a block diagram showing the configuration of the main part of the portable radio terminal 13
as the electronic volume control device of the present invention, and the description of the
configuration unnecessary for the description of the present invention is omitted here. There is.
The antenna AT is connected to a Bluetooth (BT) module. The CPU 33 executes various processes
in accordance with the program stored in the ROM 34. The RAM 35 provides a work area for
temporarily storing data and the like when the CPU 33 executes various processes. Various
operation switches including a volume switch 39 and a display device are connected to the
interface 36. The volume switch 39 includes at least a "+" key 39a and a "-" key 39b. The
electronic volume 37 attenuates the input signal with an attenuation factor corresponding to the
operation of the volume switch 39 and outputs this to the amplifier 38. The BT module mainly
includes the RF unit 31 and the BT chip 32.
The BT chip 32 executes processing of establishing intra-piconet synchronization with the other
party terminal, encoding / decoding processing of transmission / reception signals, and the like.
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That is, at the time of transmission, each BT module digitally modulates the carrier signal with
transmission data, and spreads the modulated carrier signal by frequency hopping. Then, the
transmission signal is amplified to a transmission output level equal to or lower than a specified
value, and then transmitted from the antenna AT to the radio terminal of the communication
partner. Also, a radio signal coming from a radio terminal of the other party of communication is
received through the antenna AT, and this is subjected to spectrum despreading and then digital
demodulation. FIG. 3 is a block diagram showing the configuration of the main part of the onvehicle wireless terminal 14 as a remote controller of the present invention, and compared with
the portable wireless terminal 13, the speaker 12, the electronic volume 37 and the amplifier 38
are It is omitted. FIG. 4 (a) is a functional block diagram of the portable wireless terminal 13, and
FIG. 4 (b) is a functional block diagram of the on-vehicle wireless terminal 14. The same
reference numerals as above denote the same or equivalent parts. There is. In FIG. 4A, the
correspondence relationship storage unit 132 of the portable wireless terminal 13 is one
function of the ROM 34, and the correspondence relationship between the common volume value
Dcom and the specific volume value Dvol1 is stored in advance here. ing. The common volume
value Dcom is a volume value defined on a 16-step volume scale, which is a standard of
Bluetooth, and can take any of 16 levels from Dcom [0] to Dcom [15]. The unique volume value
Dvol1 is a volume value defined on a volume scale unique to the portable wireless terminal 13,
and can take any of M stages of Dvol1 [1] to Dvol1 [m]. In the present embodiment, since the
portable radio terminal 13 adopts the four-step eigenscale, the volume value can be any of four
steps of Dvol1 [1] to Dvol1 [4]. The current volume value storage unit 131 is one function of the
RAM 35, and the common volume value Dcom notified by wireless communication from the onvehicle wireless terminal 14 or the common value set by the volume operation of the own
terminal 13 is stored here. The volume value Dcom is stored. The attenuation factor of the
electronic volume 37 is controlled based on the common volume value Dcom. The volume value
conversion unit 133 is one function of the CPU 33, and responds to the volume operation of the
volume switch 39 to store the common volume value Dcom stored in the current volume value
storage unit 131 in the correspondence relationship storage. The amount is increased or
decreased based on the correspondence registered in the unit 132.
The volume value updating unit 134 updates and registers the increased or decreased common
volume value Dcom in the current volume value storage unit 131. The volume value notification
unit 135 notifies the on-vehicle wireless terminal 14 of the common volume value Dcom after
increase and decrease. In FIG. 4B, the correspondence relationship storage unit 141 of the onvehicle wireless terminal 14 is one function of the ROM 44, and the correspondence relationship
between the common volume value Dcom and the specific volume value Dvol2 is stored. The
common volume value Dcom is a volume value defined on a 16-step volume scale, which is a
standard of Bluetooth, and can take any of 16 levels from Dcom [0] to Dcom [15]. The unique
volume value Dvol2 is a volume value defined on the L-step volume scale unique to the terminal
14. In this embodiment, any one of seven levels Dvol2 [1] to Dvol2 [7] can be taken. . The current
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volume value storage unit 141 is one function of the RAM 45. Here, the common volume value
Dcom notified from the portable wireless terminal 13 or the common volume value Dcom set by
the volume operation of the own terminal 14 is provided. Is stored. The volume value converter
143 is a function of the CPU 43, and in response to the volume operation of the volume switch
49, the common volume value Dcom stored in the current volume value storage unit 141 is
stored in the correspondence relationship memory. The amount is increased or decreased based
on the correspondence registered in the unit 142. The volume value updating unit 144 updates
and registers the increased or decreased common volume value Dcom in the current volume
value storage unit 141. The volume value notification unit 145 notifies the portable wireless
terminal 13 of the common volume value Dcom after the increase and decrease. Next, the
operation of this embodiment will be described in detail with reference to the flowcharts of FIGS.
5 and 6 simultaneously. FIG. 5 shows the operation of the mobile wireless terminal 13, and FIG. 6
shows the operation of the on-vehicle wireless terminal 14. In FIG. 5, in the portable wireless
terminal 13, the current common volume value Dcom is read from the volume value storage unit
131 and notified to the electronic volume 37 at step S 11. In step S12, the attenuation rate of the
electronic volume 37 is controlled based on the read common volume value Dcom. Therefore, the
reproduction volume output from the speaker 12 of the headset is limited based on the common
amount value Dcom. In step S13, the read common volume value Dcom is notified from the
volume value notification unit 135 to the on-vehicle wireless terminal 14 as an initial value.
In FIG. 6, when the in-vehicle wireless terminal 14 receives the common volume value Dcom
from the portable wireless terminal 13 in step S31, the in-vehicle wireless terminal 14 newly
registers the common volume value Dcom in the current volume value storage unit 141 in step
S32. . In step S33, it is determined whether or not the volume switch 49 of the own terminal 14
is operated, and if the volume operation is not detected, the process proceeds to step S34. In step
S34, it is determined whether or not the common volume value Dcom transmitted from the
portable wireless terminal 13 has been received, and if it has not been received, the process
returns to step S33. Returning to FIG. 5, also in the portable radio terminal 13, after notifying the
initial value of the common volume value Dcom in step S13, it is determined in step S14 whether
or not the volume switch 39 of the own terminal is operated. . When a volume operation is
detected, in step S17, the common volume value Dcom registered in the current volume value
storage unit 131 is responded to the volume operation, and the volume value conversion unit
133 generates the correspondence relationship storage unit 132. The "volume value increase /
decrease process" is performed to increase or decrease while referring to. FIG. 7 is a flow chart
showing the operation of one embodiment of the “volume value increase / decrease process”,
in which the current common volume value Dcom is here, as will be described in detail with
reference to FIGS. The operation will be described by taking the case where the volume switch 39
is operated to increase (FIG. 8) and the operation to decrease the volume (FIG. 9) from the state
of [9] as an example. As shown in FIGS. 8, 9 and 10, in the present embodiment, the four unique
volume values Dvol1 [1] to Dvol1 [4] of the portable wireless terminal 13 are respectively
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“small volume suitable for stopping”. , “Low volume suitable for low vehicle speed running”,
“medium volume suitable for medium vehicle speed running”, and “maximum volume
suitable for high vehicle speed running”, respectively, and common volume value Dcom [1], [7],
[11] and [15] are associated with each other. From the same point of view, the seven unique
volume values Dvol2 [1] to Dvol2 [7] of the on-vehicle wireless terminal 14 respectively have the
common volume values Dcom [1], [4], [7], [9], [11]. ], [13], and [15] are associated. In FIG. 7, in
step S 171, the current common volume value Dcom [9] is read out from the current volume
value storage unit 131. In step S172, it is determined whether the volume operation is an
increase operation or a decrease operation. If it is the increase operation, in step S 173, as shown
in FIG. 8, among the four inherent volume values Dvol 1 [1] to Dvol 1 [4], the corresponding
common volume value Dcom ([1], [7], [11], and [15] are selected as the current common volume
value Dcom [9] and the inherent volume value Dvol1 closest to the increase side.
In this embodiment, the corresponding common volume value Dcom of the inherent volume
value Dvol1 [1] is [1], and the corresponding common volume value Dcom of the inherent volume
value Dvol1 [2] is [7], the correspondence of the inherent volume value Dvol1 [3] The common
volume value Dvol is [11] and the corresponding common volume value Dvol1 [4] is [15], and the
corresponding common volume value Dvol1 [3] is the common volume value Dvol1 [11] is the
common volume value Dcom [ 9] and is closest to the increase side, so the inherent volume value
Dvol1 [3] is selected. In step S175, the selected inherent volume value Dvol1 [3] is converted to
the common volume value Dcom [11]. On the other hand, if the volume operation is a reduction
operation, as shown in FIG. 9, among the four inherent volume values Dvol1 [1] to Dvol1 [4], the
corresponding common volume value is selected in step S174. Dcom ([1], [7], [11], [15]) selects
the current common volume value Dcom [9] and the inherent volume value Dvol1 [2] closest to
the reduction side in the same manner as described above Be done. In step S175, the selected
inherent volume value Dvol1 [2] is converted to the common volume value Dcom [7]. Returning
to FIG. 5, when the common volume value Dcom after the increase or decrease is determined as
described above, in step S18, the common volume value Dcom after the increase or decrease is
calculated by the volume value update unit 134 as the current volume value storage unit 131. To
be updated. Thereafter, the process returns to step S12, and the attenuation rate of the electronic
volume 37 is controlled based on the common volume value Dcom after increase and decrease.
In step S13, the volume value notification unit 135 notifies the on-vehicle wireless terminal 14 of
the common volume value Dcom after the increase and decrease. When the in-vehicle wireless
terminal 14 receives the increased or decreased common volume value Dcom in step S34 of FIG.
6, the common volume value Dcom is updated to the current volume value storage unit 141 by
the volume value update unit 144 in step S35. be registered. On the other hand, when the
volume switch 49 of the in-vehicle wireless terminal 14 is operated and this is detected in step
S33 of FIG. 6, in step S36, the "volume value increase / decrease process" similar to the portable
wireless terminal 13 side is It is executed by the volume value converter 143. FIG. 10 is a
diagram schematically showing the operation of the “volume value increase / decrease
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process” in the on-vehicle wireless terminal 14. Here, the volume switch 39 is switched from
the state where the current common volume value Dcom is [7]. The operation will be described
by taking the case of the increase operation as an example.
In this embodiment, among the seven unique volume values Dvol2 [1] to Dvol2 [7], the
corresponding common volume value Dcom is the closest to the current common volume value
Dcom [7] on the increase side. The volume value Dvol2 is selected. In this embodiment, the
corresponding common volume value Dcom of the inherent volume value Dvol2 [1] is [1], and the
corresponding common volume value Dcom of the inherent volume value Dvol2 [2] is [4], the
correspondence of the inherent volume value Dvol2 [3] Common volume value Dcom is [7],
corresponding volume value Dvol2 [4] corresponding common volume value Dcom is [9],
corresponding volume value Dvol2 [5] corresponding common volume value Dcom is [11],
specific volume value Dvol2 [ Since the corresponding common volume value Dcom of 6] is [13]
and the corresponding common volume value Dcom of the inherent volume value Dvol2 [7] is
[15], the inherent volume value Dvol2 [4] is selected. Then, [9] which is the corresponding
common volume value Dcom of the inherent volume value Dvol2 [4] is obtained as the common
volume value Dcom after increase / decrease. In step S 37, the volume value updating unit 144
updates and registers the increased or decreased common volume value Dcom in the current
volume value storage unit 141. In step S38, the volume value notification unit 145 notifies the
portable wireless terminal 13 of the increased or decreased common volume value Dcom. In the
portable radio terminal 13, when the common volume value Dcom is received in step S15 of FIG.
5, the common volume value Dcom is updated and registered in the current volume value storage
unit 131 by the volume value update unit 134 in step S16. Ru. Thereafter, the process returns to
step S12, and the attenuation rate of the electronic volume 37 is controlled based on the updated
common volume value Dcom. According to the present invention, the following effects are
achieved. (1) The attenuation rate of the electronic volume is indicated by the volume value
Dcom on the common scale from the remote controller (in-vehicle wireless terminal 14). In the
electronic volume control device (portable radio terminal 13), the attenuation factor of the
electronic volume is indicated by the volume value Dvol1 on the eigenscale, but this inherent
volume value Dvol1 is converted to the common volume value Dcom and the attenuation factor
of the electronic volume Is controlled based on the common volume value Dcom. Therefore, the
electronic volume control apparatus can adopt the eigenscale for volume control while securing
the versatility of the apparatus and the remote controller. (2) In the remote controller (vehiclemounted wireless terminal 14), the attenuation factor of the electronic volume is indicated by the
volume value Dvol2 on the unique scale, but after this unique volume value Dvol1 is converted to
the common volume value Dcom , To the electronic volume control device (portable radio
terminal 13).
In the electronic volume control device, the attenuation rate of the electronic volume is
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controlled based on the common volume value Dcom. Therefore, the remote controller adopts the
eigenscale for volume control while securing versatility of the own device and the electronic
volume control device. it can. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram
showing an example of an intercom communication mode to which the present invention is
applied. FIG. 2 is a block diagram showing a configuration of a communication system of a
mobile wireless terminal to which the present invention is applied. FIG. 3 is a block diagram
showing a configuration of a communication system of an on-vehicle wireless terminal to which
the present invention is applied. FIG. 4 is a functional block diagram of a portable wireless
terminal and an on-vehicle wireless terminal to which the present invention is applied. FIG. 5 is a
flow chart showing a volume control procedure of the mobile wireless terminal. FIG. 6 is a flow
chart showing a volume control procedure of the on-vehicle wireless terminal. FIG. 7 is a diagram
(part 1) schematically showing the volume control method of the present invention. FIG. 8 is a
diagram (part 2) schematically showing the volume control method of the present invention. FIG.
9 is a diagram (part 3) schematically illustrating the volume control method of the present
invention. FIG. 11 is a diagram (No. 4) schematically showing the volume control method of the
present invention. FIG. 11 is a diagram for explaining the problem of the prior art. FIG. 12 is a
diagram for explaining the problem of the prior art. FIG. 13 is a diagram for explaining the
problem of the prior art. [Description of the code] 11 microphone, 12 speaker, 13 portable radio
terminal, 14 in-vehicle radio terminal, 31 RF unit, 32 BT chip, 33 CPU, 34 ROM, 35 RAM, 36
Output interface, 37: electronic volume device, 38: amplifier, 39: volume switch
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