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JP2008219809

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2008219809
The present invention operates as a relay unit interposed between a portable terminal serving as
an audio source and an earphone that outputs voice, and preferably implements wireless
transmission and reception of audio data with the portable terminal, transmission of an operation
signal to the portable terminal, and the like. Do. A headset is attached to the relay unit, and the
mobile terminal can be used as a wireless headset via Bluetooth communication. On the other
hand, at the time of digital mobile broadcast reception, the mobile terminal is connected with a
shield cable which also functions as an antenna for broadcast reception. Further, while the relay
unit is connected to the portable terminal by a cable, the battery for driving the circuit in the
relay unit is charged. [Selected figure] Figure 3A.
Relay device
[0001]
The present invention relates to an information device such as a mobile phone serving as a
source of music data and voice data, and a relay device interposed between an earphone
outputting voice and, more particularly, to music between a portable terminal having a wireless
communication function. The present invention relates to a relay apparatus that performs
transmission and reception of data and voice data, transmission of an operation signal to a
portable terminal, and the like.
[0002]
More particularly, the present invention relates to a relay device interposed as a relay unit
between a portable terminal capable of receiving digital mobile broadcasts such as digital radio
and 1seg, and an earphone outputting voice, particularly on the portable terminal. The present
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invention relates to a relay apparatus that provides an antenna function when receiving digital
mobile broadcasts.
[0003]
Various portable terminals such as portable telephones and portable audio players are in
widespread use.
In a portable terminal that receives an audio signal or reproduces a recorded audio signal, the
user generally wears a headset and views audio.
Recently, with the expansion of services for mobile terminals such as digital and mobile
broadcasts, it is thought that the use of portable terminals using headsets will be more and more
frequent. For digital and mobile broadcasts, eight broadcast stations are divided into 430 kHz for
each 4 MHz of 7 channels (desired signal bandwidth: 188.5 MHz to 192 MHz) of 7 channels
(desired signal bandwidth: 188.5 MHz to 192 MHz) located in the VHF band (ground analog TV
broadcast channels 6 and 8). Terrestrial digital audio broadcasting (digital radio broadcasting)
using ISDB-Tsb (Integrated Services Digital Broadcasting for Terrestrial Sound Broadcasting), or
the middle of 13 segments of the 6 MHz band used in terrestrial digital TV broadcasting One
segment is performed using one segment part of.
[0004]
Here, if the portable terminal and the headset are connected by a cable, the cable may be
entangled with the body or luggage of the user who is moving or doing some work. Therefore, a
system for wirelessly connecting between a terminal such as a wireless audio player and a
headset has been developed and widely used.
[0005]
The wireless audio player appropriately encodes, for example, music data read from a recording
medium, adds a header conforming to a predetermined wireless communication protocol,
performs modulation processing, and up-converts the signal into a desired wireless signal and
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transmits it to the air. To release. On the other hand, on the wireless headset side, a wireless
signal is received, and a music signal obtained by performing appropriate demodulation and
decoding processing is acoustically output from a speaker. The headset may also be equipped
with a relay unit equipped with a remote control operation unit that instructs the user to play or
stop music data, so the operation signal from the relay unit to the wireless audio player is also
wireless Will be sent.
[0006]
In order to wirelessly connect between the portable terminal and the headset, near field
communication technology such as Bluetooth communication is applied. Bluetooth
communication uses a global radio frequency called 2.4 GHz ISM (Industry Science Medical)
band in Bluetooth communication, and the entire data transmission rate is 1 Mbps. Bluetooth
communication is a global standard that provides wireless connection interfaces applicable to
various industries, and its operation and management are delegated to the "Bluetooth SIG
(Special Interest Group)."
[0007]
For example, a proposal has been made for an ear-hook type wireless headset that realizes
comfortable hands-free calls such as mobile phones wirelessly using Bluetooth communication or
the like (see, for example, Patent Document 1). The headset body is mounted with a circuit board
that constitutes a Bluetooth transceiver, an antenna mounted on the circuit board, a rechargeable
battery, and the like.
[0008]
The headset unit having the wireless function is battery-powered, so it is necessary to charge or
replace the battery, which is troublesome for the user. Also, when the battery is exhausted,
processing such as reception of audio signals, reproduction output, transmission of operation
signals, etc. becomes impossible, and the headset can not be used.
[0009]
For example, when the connection of the power cable is detected, the wireless connection is
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disconnected, and the operation of the relevant device is controlled to stop so that the battery
charging operation can be stably performed. (See, for example, Patent Document 2).
[0010]
Also, when the wireless headphones and the wireless audio player are connected through the
connector, part of the wireless audio player's operating voltage is the charging voltage of the
wireless headphone secondary battery and the operation of the wireless headphones Proposals
have been made for wireless systems that provide as voltage (see, for example, US Pat.
[0011]
Many conventional wireless headsets function as regular wired earphones when connected to the
device body using a cable.
[0012]
On the other hand, when FM broadcasts or digital mobile broadcasts such as digital radios and
1seg are to be received by a portable device, the configuration method of the receiving antenna
is one of the technical problems.
In general, a λ / 4 long antenna is required to obtain sufficient antenna characteristics.
An antenna length of about 15 cm for 1 seg and about 37.5 cm for digital radio is required. For
example, it is difficult to receive with a whip antenna or the like mounted on a mobile phone.
[0013]
One technique for providing an antenna circuit to a portable terminal is known in the art as an
earphone antenna that combines an earphone cable with the antenna circuit and uses the
earphone cable as a wire antenna.
According to this type of earphone antenna, a highly portable antenna for broadcast reception
can be realized with a relatively simple configuration, and a design that is unnoticeable without
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obstructing demands for light weight, small size, and portability. The antenna can be mounted on
[0014]
For example, when the cord connecting the earphone microphone and the mobile phone is
configured by a parallel two-core cable consisting of a pair of acoustic signal lines and ground
lines, the entire earphone cable can be an antenna by utilizing the ground line as an antenna. A
proposal has been made for an earphone microphone as described in U.S. Pat. In addition, an
earphone antenna that functions as a dipole antenna and can obtain high gain over a wide band
has been proposed (see, for example, Patent Document 5).
[0015]
As described above, as a form for watching music data and voice data with a headset on a
portable terminal, music data reproduced on the portable terminal and voice data to be called on
a mobile phone on the headset There are two typical cases: the case of outputting voice and the
case of receiving digital mobile broadcast such as digital radio and 1seg by a portable terminal
and outputting the voice on a headset.
[0016]
The former use case can apply a wireless communication method such as Bluetooth
communication to improve the usability of the user wearing the headset, but there is a problem
of charging the headset and the latter digital mobile It does not consider receiving broadcasts.
[0017]
In the latter use case, since the earphone antenna is cabled to the portable terminal body, there is
no problem of supplying operating voltage to the headset or charging operation of the battery,
but when using the headset Because the cable is always connected, the user's convenience is not
good.
[0018]
JP, 2005-328118, A JP, 3762373, A JP, 2006-74384, A JP, 2005-354275, A JP, 2005-333613,
A
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[0019]
An object of the present invention is to operate as a relay unit interposed between a portable
terminal equipped with a wireless communication function and serving as a source of music data
and voice data such as a portable telephone and an earphone that outputs voice, and between the
portable terminal It is an object of the present invention to provide an excellent relay apparatus
capable of suitably implementing wireless transmission and reception of music data and voice
data, transmission of an operation signal to a portable terminal, and the like.
[0020]
A further object of the present invention is to intervene as a relay unit between a portable
terminal capable of receiving digital mobile broadcasts such as digital radio and 1seg, and an
earphone outputting voice and receive the digital mobile broadcast on the portable terminal It is
an object of the present invention to provide an excellent relay apparatus capable of providing an
antenna function.
[0021]
The present invention has been made in consideration of the above problems, and is a relay unit
interposed between an information device that supplies audio data and an earphone that outputs
an audio signal, and is connected to the information device by wireless communication. Wireless
communication means, a connector for attaching a connection cord for wired connection with the
information device, an earphone jack for attaching the earphone, wireless connection using the
wireless communication means, or a connection cord attached to the connector A relay unit
characterized by comprising: second switching means for outputting voice data supplied from an
information device by means of the earphone using any of wired connections.
[0022]
The use form of the portable terminal which listens to music data using a headset is common.
Recently, with the expansion of services for mobile terminals such as digital and mobile
broadcasts, it is thought that the use of portable terminals using headsets will be more and more
frequent.
[0023]
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Since it is troublesome if the portable terminal and the headset are connected by a cable, a
system for connecting wirelessly between the terminal such as a wireless audio player and the
headset and the headset has been developed and widely used.
However, since the headset unit having a wireless function is battery operated, it is necessary to
charge or replace the battery.
[0024]
On the other hand, when FM broadcast or digital mobile broadcast such as digital radio or 1seg is
received by a portable device, it is difficult to receive with a whip antenna etc. mounted on a
mobile phone, and the method of configuring the receiving antenna is one of the technical issues.
Become one.
An earphone antenna is known in the art that combines an earphone cable with an antenna
circuit and uses the earphone cable as a wire antenna.
[0025]
The relay unit according to the present invention has a function of performing wireless
connection and wired connection with an information device, and selects a connection method
with the information device according to the situation of a user who uses the information device
such as a mobile phone. Is possible.
[0026]
In the relay unit according to the present invention, voice data supplied from the information
device is voiced from the earphone using the wireless connection using the wireless
communication means or the wired connection using the connection cord attached to the
connector. A second switching means for outputting is provided.
That is, the headset is attached via the earphone jack, and the information device is configured to
be connectable by both wireless communication such as Bluetooth communication and wired
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communication.
[0027]
When listening to music data reproduced on an information device or voice data when the
information device makes a voice call with a mobile phone, wireless communication with the
information device is possible and can be used as a wireless headset.
[0028]
On the other hand, when a digital mobile broadcast such as one segment is to be received on the
information device side, connection is made with the information device using a connection code
that also acts as an antenna for receiving the broadcast.
Here, the connection cord is a multi-core structure including a plurality of signal lines, and is
configured as a shield cable in which each signal line is covered using an outer cover made of a
braided shield formed by knitting soft copper wires. The antenna can be formed by the length of
the outer cover made of a braided shield and the ground of the information device main body.
Then, on the information device side, the broadcast signal received by such an antenna / cable is
decoded, and the obtained music / voice data is outputted to the earphone via the antenna /
cable and the relay unit.
By using the connection cord as an antenna, it is possible to obtain an antenna length suitable for
receiving digital mobile broadcasts, and it is not necessary to rely on a whip antenna mounted on
a mobile phone.
[0029]
The relay unit according to the present invention may include a remote control for remote
control of the information device.
In this case, the third switching means is an information device using either an operation signal
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according to a user operation on the remote control, a wireless connection using a wireless
communication means, or a wired connection using a connection cord attached to the connector.
Output.
[0030]
Also, the relay unit according to the present invention may be equipped with a microphone for
collecting the voice of the user for calling or recording.
In this case, the first switching means outputs the audio signal collected by the microphone to
the information device using either the wireless connection using the wireless communication
means or the wired connection using the connection cord attached to the connector It is
supposed to
[0031]
Further, the relay unit according to the present invention is battery-powered, and further
includes a rechargeable battery for supplying an operating voltage, and a battery charging
function unit for charging the battery. When the connection cord connected to the information
device is removed from the connector, the battery charging function is turned off. However,
when the connection cord is attached, the battery charging function is turned on. A portion of the
operating voltage can be used to charge the battery.
[0032]
In addition, when a connection cord connected to the information device is attached to the
connector, it is not necessary to perform wireless communication with the information device.
Therefore, the wireless communication means is turned on when the connection cord is removed,
but power saving can be achieved by turning off at least a part of the wireless communication
means when the connection cord is attached.
[0033]
As described above, the relay apparatus according to the present invention can constitute an
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antenna for digital / mobile broadcast reception in combination with the earphone, while being
detachable from the portable terminal, the reproduction output of music data or When
outputting voice data during a call, etc., it can be removed as needed from the portable terminal
and used as a wireless headset, and the wireless system can eliminate the bother from the user.
[0034]
According to the present invention, it has a wireless communication function, operates as a relay
unit interposed between a portable terminal such as a mobile phone serving as a source of music
data and audio data, and an earphone outputting voice, and between the portable terminal Thus,
it is possible to provide an excellent relay apparatus capable of suitably implementing wireless
transmission and reception of music data and voice data, transmission of an operation signal to a
portable terminal, and the like.
[0035]
Further, according to the present invention, a digital mobile, such as a mobile terminal capable of
receiving digital mobile broadcasts such as digital radio and 1seg, and an earphone outputting
voice are interposed as a relay unit, and the digital mobile broadcast is received on the mobile
terminal. Thus, it is possible to provide an excellent relay apparatus capable of providing an
antenna function.
[0036]
The relay unit according to the present invention is detachable from the portable terminal using
a connection cord having an antenna function, and the headset mounted when viewing FM
broadcast or digital mobile broadcast which reception is difficult with the antenna mounted on
the mobile phone You may use it by wired connection.
On the other hand, when listening to music data recorded on a portable terminal, etc., it is
possible to select the connection method according to the situation of the user, such as wirelessly
transmitting the music data to the headset.
Also, when the battery of the headset is exhausted or there is no power supply, it can function as
a normal earphone by connecting with a connection cord.
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[0037]
Other objects, features and advantages of the present invention will become apparent from the
more detailed description based on the embodiments of the present invention described later and
the attached drawings.
[0038]
Hereinafter, embodiments of the present invention will be described in detail with reference to
the drawings.
[0039]
FIG. 1A schematically shows the configuration of a wireless communication system according to
an embodiment of the present invention.
[0040]
The illustrated system comprises a mobile phone 8, an earphone 6, and a relay unit 1 interposed
between the mobile phone 8 and the earphone 6.
The earphone 6 is detachably attached to the relay unit 1 by the earphone jack 10, but of course,
it may be a headset in which the relay unit and the earphone 6 are integrated.
[0041]
The mobile phone 8 has a storage function of music data and its reproduction output function,
and a reception function of FM broadcast, digital radio such as digital radio and 1seg, as well as a
call function via a mobile phone network. It is assumed that
However, since this type of mobile phone is general, the detailed description is omitted in this
specification.
[0042]
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The mobile phone 8 and the relay unit 1 both have a Bluetooth communication function. For
example, the mobile phone 8 serves as a master to form a piconet, while the relay unit 1
operating as a slave is accommodated in the piconet.
In the present embodiment, an operation to transmit music data and audio data from the mobile
phone 8 to the relay unit 1 and to instruct operations such as reproduction / stop of music data
from the relay unit 1 to the mobile phone 8 by Bluetooth communication. It is possible to
transmit a signal.
[0043]
The mobile phone 8 and the relay unit 1 can be configured to be interconnected not by Bluetooth
communication but by a wireless LAN function such as IEEE 802.11.
[0044]
Further, as shown in FIG. 1B, it is also possible to wire-connect between the mobile phone 8 and
the relay unit 1 through the connection cord 3 which is detachable with respect to the connector
13.
[0045]
The connection cord 3 includes a signal for voice input and output, a power supply line for
feeding a battery in the relay unit 1, a remote control signal line for transmitting an operation
signal according to a user operation on the relay unit 1, a ground signal line, etc. A multi-core
structure including a plurality of signal lines is configured as a shield cable covered with an outer
cover made of a braided shield formed by knitting soft copper wires.
In addition, an antenna is formed by the length of the outer cover made of a braided shield and
the ground of the cellular phone 8 main body, and the shield cable can also function as an
antenna cable.
The configuration of the connection cord 3 will be described in detail later.
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[0046]
FIG. 2 shows the internal configuration of the relay unit 1.
In the figure, the configuration in the case of being connected to the mobile phone 8 mainly
using Bluetooth communication is functionally shown. However, in order to avoid the confusion
of the drawings, the wiring between functional modules is appropriately drawn and drawn.
[0047]
The relay unit 1 includes a Bluetooth communication module 11 for wireless connection with the
mobile phone 8 and an antenna 12 for Bluetooth communication, and a connector 13 for
mounting the mobile phone 8 and the connection cord 3 for wire connection. The functional
configuration of the relay unit 1 at the time of wire connection in the latter case will be described
in detail later, and here, the functional configuration of the relay unit 1 at the time of wireless
connection of the former will be described.
[0048]
The relay unit 1 at the time of wireless connection performs two operations: music data
reproduction for reproducing music data sent from the mobile phone 8 through Bluetooth
communication, and voice communication performed when the mobile phone 8 makes or
receives calls Have a mode. When the user operates the operation changeover switch 14, the
operation mode is switched by connection switching by the three switches 21 to 23 in the relay
unit 1.
[0049]
The user can remotely operate the mobile phone 8 through the remote control 15 under any
operation mode of music data reproduction and voice call. The circuit in the relay unit 1 is driven
by a battery (not shown) and includes a battery charging function unit 16 for charging the
battery. However, at the time of wireless connection, the battery charging function unit 16 is
turned off.
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[0050]
FIG. 2A shows a functional configuration of the relay unit 1 when the music data reproduction
mode is set at the time of wireless connection.
[0051]
On the mobile phone 8 side, music data read out from a recording medium (not shown) is
appropriately encoded, a predetermined header is added, modulation is performed, and it is
upconverted into a desired radio signal and released into the air.
On the other hand, on the relay unit 1 side, when the Bluetooth communication module 11
receives a wireless signal via the antenna 12, performs appropriate demodulation and decoding
processing, and further generates a music reproduction signal in the signal processing unit 17,
second Sound output from the earphone 6 via the switch 22 and the earphone jack 10.
[0052]
Further, under the music data reproduction mode at the time of wireless connection, the remote
controller 15 can issue instructions such as sound volume adjustment, start and stop of music
reproduction, fast forward, and rewind. The operation signal of the remote control 15 by the user
is input to the signal processing unit 17 through the third switch 23, encoded by the Bluetooth
communication module 11, added with a predetermined header, and further subjected to
modulation processing, from the antenna 12 to the portable Send to the telephone 8.
[0053]
Further, FIG. 2B shows the functional configuration of the relay unit 1 when the voice
communication mode is set at the time of wireless connection.
[0054]
On the mobile phone 8 side, the voice data of the other party of communication is appropriately
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encoded, a predetermined header is added, modulation processing is performed, and the desired
radio signal is upconverted and released into the air.
On the other hand, on the relay unit 1 side, when the Bluetooth communication module 11
receives a wireless signal via the antenna 12, performs appropriate demodulation and decoding
processing, and generates an audio signal in the signal processing unit 17, the second Sound is
output from the earphone 6 via the switch 22 and the earphone jack 10.
[0055]
Also, when the voice of the user making a call is collected by the microphone 19, it is input to the
signal processing unit 17 via the first switch 21 and subjected to signal processing. Then, the
Bluetooth communication module 11 encodes it, adds a predetermined header, performs
modulation processing, and sends it from the antenna 12 to the mobile phone 8.
[0056]
Further, under the voice communication mode at the time of wireless connection, an instruction
such as an audio volume adjustment can be made by the remote controller 15. The operation
signal of the remote control 15 by the user is input to the signal processing unit 17 through the
third switch 23, encoded by the Bluetooth communication module 11, added with a
predetermined header, and further subjected to modulation processing, from the antenna 12 to
the portable Send to the telephone 8.
[0057]
FIG. 3 functionally shows the internal configuration of the relay unit 1 when connected to the
mobile phone 8 by wire. However, in order to avoid the confusion of the drawings, the wiring
between functional modules is appropriately drawn and drawn.
[0058]
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The connector 13 is attached with a connection cord 3 for wire connection with the mobile
phone 8. At the time of wire connection, the relay unit 1 has two operation modes: music data
reproduction for reproducing music data sent through the connection code 3 and voice
communication performed when the mobile phone 8 makes or receives calls. have. When the
user operates the operation changeover switch 14, the operation mode is switched by connection
switching by the three switches 21 to 23 in the relay unit 1.
[0059]
The user can remotely operate the mobile phone 8 through the remote control 15 under any
operation mode of music data reproduction and voice call. Although the circuit in relay unit 1 is
driven by a battery (not shown) (described above), it is possible to charge the battery using a part
of the operating voltage of mobile phone 8 at the time of wire connection. The function unit 16 is
turned on. In addition, since the Bluetooth communication function is not required at the time of
wire connection, when it is detected that the connection cord 3 is connected to the connector 13,
an off signal for turning off the Bluetooth communication module 11 is generated to save power.
.
[0060]
FIG. 3A shows a functional configuration of the relay unit 1 when the music data reproduction
mode is set at the time of wire connection.
[0061]
On the mobile phone 8 side, an audio reproduction signal is generated from the music data read
out from the recording medium (not shown) and sent out to the connection code 3.
On the other hand, on the relay unit 1 side, sound is output from the earphone 6 via the
connector 13, the second switch 22, and the earphone jack 10.
[0062]
Further, under the music data reproduction mode at the time of wire connection, the remote
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controller 15 can issue instructions such as sound volume adjustment, start and stop of music
reproduction, fast forward and rewind. An operation signal of the remote controller 15 by the
user is transmitted to the mobile phone 8 through the third switch 23, the connector 13, and the
connection cord 3.
[0063]
FIG. 3B shows the functional configuration of the relay unit 1 when the voice communication
mode is set at the time of wire connection.
[0064]
On the mobile phone 8 side, the voice data of the other party is sent out to the connection code
3.
On the other hand, on the relay unit 1 side, sound is output from the earphone 6 via the
connector 13, the second switch 22, and the earphone jack 10.
[0065]
Also, when the voice of the user making a call is collected by the microphone 19, the voice is
transmitted to the mobile phone 8 through the third switch 23, the connector 13, and the
connection cord 3.
[0066]
Further, under the voice call mode at the time of wire connection, an instruction such as voice
volume adjustment can be made in the remote controller 15.
An operation signal of the remote controller 15 by the user is transmitted to the mobile phone 8
through the third switch 23, the connector 13, and the connection cord 3.
[0067]
FIG. 4 shows the internal configuration of the connection cord 3 for connecting the mobile phone
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8 and the relay unit 1 by wire.
[0068]
The connection cord 3 shown in the figure includes left and right (R / L) voice signal lines for
voice input / output, power supply lines for feeding the battery in the relay unit 1, and
operations according to user operations on the relay unit 1. Multi-core structure including
multiple signal lines such as remote control signal lines for transmitting signals, ground signal
lines, call switching signal lines, microphone switching signal lines, and signal lines for turning
off the Bluetooth communication module 11 when connecting cord 3 is attached It is configured
as a sheathed shielded cable consisting of a braided shield formed by braiding a soft copper wire.
[0069]
FIG. 5 shows a configuration for connecting the connection cord 3 to the mobile phone 8 and
each functional module in the relay unit 1.
[0070]
At the mobile phone 8 side, high frequency chokes such as ferrite beads (FB) are loaded on each
signal line.
Ferrite beads are widely known as EMI (electromagnetic wave interference) countermeasure
parts that reduce the signal that is the source of radiation noise by using the frequency
characteristics of the impedance component of the ferrite material, which is a composite
compound of ferrite and metal. The higher the value of, the larger the impedance component.
[0071]
Further, an antenna is formed by the length of the outer cover made of the braided shield of the
connection cord 3 and the ground of the main body of the mobile phone 8, and the shield cable
can also function as the antenna cable.
A capacitor is loaded on the transmission line of the antenna reception signal received from the
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outer braid shield and high frequency coupling is applied.
[0072]
In order to obtain sufficient antenna characteristics, an antenna with a length of λ / 4 is
required, and the optimum antenna length is about 15 cm for one segment and about 37.5 cm
for digital radio.
It is difficult to receive digital mobile broadcasts with a whip antenna (not shown) mounted on
the mobile phone 8. On the other hand, a sufficient antenna length can be secured by using the
connection cord 3 as an antenna. The point that the shield braid of the shield cable is also used
for the antenna is described, for example, in Japanese Patent Application No. 2006-109603,
which has been assigned to the present applicant.
[0073]
Although not shown, the relay unit 1 may be configured to wind the connection cord 3. When
playing music or making voice calls by wireless connection, the connection code 3 is wound up
and stored in the relay unit 1, but when receiving digital mobile broadcasts with the mobile
phone 8, or when making wire connections, playing music or voice calls When the connection
cord 3 is used, the connection cord 3 may be drawn out by an appropriate length.
[0074]
The present invention has been described in detail with reference to the specific embodiments.
However, it is obvious that those skilled in the art can make modifications and substitutions of
the embodiment without departing from the scope of the present invention.
[0075]
In the present specification, the embodiments applied to a relay unit connected to a mobile
phone have been mainly described, but the gist of the present invention is not limited to this. The
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present invention can be similarly applied to various types of portable terminals and information
devices equipped with functions of reproducing audio signals and receiving digital mobile
broadcasts such as digital radio and 1seg as well.
[0076]
In short, the present invention has been disclosed in the form of exemplification, and the
contents of the present specification should not be interpreted in a limited manner. In order to
determine the scope of the present invention, claims should be taken into consideration.
[0077]
FIG. 1A is a diagram schematically showing a configuration of a wireless communication system
according to an embodiment of the present invention. FIG. 1B is a diagram showing a state in
which the mobile phone 8 and the relay unit 1 are connected by wire through the connection
cord 3. FIG. 2A is a diagram showing a functional configuration of the relay unit 1 when the
music data reproduction mode is set at the time of wireless connection. FIG. 2B is a diagram
showing a functional configuration of the relay unit 1 when it is set to a voice communication
mode at the time of wireless connection. FIG. 3A is a diagram showing a functional configuration
of the relay unit 1 when the music data reproduction mode is set at the time of wire connection.
FIG. 3B is a diagram showing a functional configuration of the relay unit 1 when the voice
communication mode is set at the time of wire connection. FIG. 4 is a view showing an internal
configuration of the connection cord 3 for connecting the mobile phone 8 and the relay unit 1 by
wire. FIG. 5 is a diagram showing a configuration for connecting the connection cord 3 to the
mobile telephone 8 and each functional module in the relay unit 1.
Explanation of sign
[0078]
DESCRIPTION OF SYMBOLS 1 ... Relay unit 3 ... Connection code 6 ... Earphone 8 ... Mobile
telephone 10 ... Earphone jack 11 ... Bluetooth communication module 12 ... Antenna 13 ...
Connector 14 ... Operation | movement changeover switch 15 ... Remote control 16 ... Battery
charge function part 17 ... Signal processing part 19 ... microphone 21 ... first switch 22 ... second
switch 23 ... third switch
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