JPH10336310A - Handsfree telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a handsfree telephone system which becomes in a handfree state just by placing a portable telephone by performing speech communication between a handfree set and the portable telephone set through a communication means of electromagnetic induction. SOLUTION: A case 10 contains a portable telephone set 2, and a transmitting adaptor 3a is attached to an inputting and outputting part of the telephone set 2 for a voice signal and a control signal. A receiving adaptor 3b is attached to an external bottom of the case 10, has a receiving loop coil, a mixer, control logic, an FM demodulator and an FSK demodulator and outputs a control signal, a voice signal and a serial signal to a handsfree set 1. A voice signal that is received by the telephone set 2 is sent to the set 1 through the adaptor 3b and outputted from an external speaker 12 only by containing the adapter 3a in the case 10 if the adapter 3a is attached to the inputting and outputting part of the telephone set 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hands-free telephone system for use in vehicles, homes, and the like, using a general-purpose portable telephone, and more particularly to a compact hands-free telephone system which is easy to install and operate.

[0002]

2. Description of the Related Art In recent years, automobile telephones have become extremely popular. In addition to conventional handset telephone systems, hands-free set telephone systems have been developed in order to avoid one-handed driving during the operation of the handset.

As shown in FIG. 10, a handsfree set telephone system of this type uses a microphone 118 for transmission.
Is installed in, for example, a sun visor section, and is used for transmitting / receiving ON / O
Since the FF switch 120 is installed, for example, on the steering wheel, and the voice output is configured to also be used as a dedicated speaker or a speaker of the vehicle-mounted audio, the driver releases his / her hand from the steering wheel. You can talk without.

[0004] In this case, since the car-dedicated telephone cannot be used once leaving the car, a general-purpose portable telephone is constructed so as to be connectable to the hands-free set telephone apparatus. Has been proposed that can be used as a mobile phone.

[0005] In such a hands-free set type automobile telephone system, the housing of the hands-free set 1 is mounted in the seat side box CB of the center console or on the lid of the seat side box CB, and the portable telephone 2 is mounted here. It is configured to be set.

[0006]

However, the conventional hands-free set car telephone system has problems that the installation place is limited, and the apparatus is complicated and the cost is high. That is, in the conventional device, the hands-free set is stored in the seat side box CB of the center console, or is tied to the lid as shown in FIG. 10, so that the seat side box CB cannot be used. Since the shape differs depending on the type of vehicle, there are problems that it is difficult to fix firmly and that a dedicated component for mounting is required separately, resulting in an increase in cost.

Further, when the hands-free set is mounted on the lid of the seat side box CB, the harness H of the signal wiring is exposed, and there is a problem that the interior of the room is not organized and the appearance is poor.

[0008] Even in a hands-free telephone system using a portable telephone, in the case of a conventional portable telephone, when a portable telephone is set, the connector C from the hands-free set 1 is connected to the portable telephone 2 as shown in FIG. Connector part 250
In order to use the mobile phone 2 away from the vehicle, it is necessary to remove the connector C, so that the operation is complicated and inconvenient.

By the way, the connector section 250 for communicating between the portable telephone 2 and the hands-free set 1 has different types of information and different frequency bands.
Terminal 2 for inputting and outputting the antenna signal as shown in FIG.
51 and a terminal 252 for inputting and outputting a control signal and an audio signal need to be provided separately.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its first object to provide a hands-free telephone system which can be set in a hands-free state by simply placing a portable telephone. . It is a second object of the present invention to provide a hands-free telephone system that is compact, convenient to install, and has a good appearance.

[0011]

In order to achieve the above object, a hands-free telephone system according to claim 1 comprises a portable telephone and a general-purpose can or a can formed substantially in the same shape as the general-purpose can. A hands-free telephone system including a hands-free set having at least one of an external microphone and an external speaker, wherein communication between the hands-free set and the mobile phone is performed by communication means of electromagnetic induction. It is characterized by being performed.

In the hands-free telephone system according to the first aspect of the present invention, first, since the portable telephone can be accommodated in a general-purpose can or a can formed substantially in the same shape as this, the portable telephone can be placed anywhere. It is easy to install and convenient. For example, when used as an in-vehicle hands-free telephone system, it can be directly installed on a cup holder mounted on a car, and when used as a home hands-free telephone system, it can be installed as it is on a table or other place.

Second, since communication between the hands-free set and the portable telephone is performed by means of electromagnetic induction communication, if the portable telephone is to be used as a hands-free, the portable telephone is simply housed in a can. When the user wants to leave the vehicle and use the mobile phone as a mobile phone, the mobile phone can be brought into the mobile phone state by simply taking out the mobile phone from the can body.

In the hands-free telephone system according to the first aspect, the electromagnetic induction communication means is not particularly limited, but in the hands-free telephone system according to the second aspect, the electromagnetic induction communication means is mounted on the portable telephone. And a transmission and / or reception adapter provided on the can body. The transmission adapter includes at least a modulator for modulating a voice signal and / or a control signal onto a carrier, an oscillator for generating a carrier, and a transmission loop coil, and the reception adapter includes a transmission loop coil of the transmission adapter. And a demodulator for demodulating a carrier received by the receiving loop coil into an audio signal and / or a control signal.

In the hands-free telephone system according to the first aspect, the installation position of the hands-free set having an external microphone and an external speaker is not particularly limited, and can be provided on a can or separately.

[0016] On the other hand, in order to achieve the above object, a hands-free telephone system according to claim 3 comprises a portable telephone,
It has a general-purpose can or a can formed in substantially the same shape as the general-purpose can, and the can has at least a telephone housing section that houses the mobile phone, an external microphone, an external speaker, a call operation button, and A hands-free set provided with a control circuit, wherein the control circuit of the hands-free set is connected to an input / output unit of a voice signal and a control signal of the mobile phone. It is characterized by.

In the hands-free telephone system according to the third aspect, first, since the portable telephone can be accommodated in a general-purpose can or a can formed substantially in the same shape as the general-purpose can, the portable telephone can be placed anywhere. It is easy to install and convenient. For example, when used as an in-vehicle hands-free telephone system, it can be directly installed on a cup holder mounted on a car, and when used as a home hands-free telephone system, it can be installed as it is on a table or other place.

Secondly, since the control circuit of the hands-free set is connected to the input / output unit of the voice signal and control signal of the mobile phone, a call operation button of the mobile phone such as an on-hook, off-hook or dial operation is provided. Various call operations that had to be pressed can be operated collectively with the call operation buttons on the hands-free set. That is, a call can be made without touching the mobile phone.

[0019] In the hands-free telephone system according to the third aspect, the method of connecting the control circuit to the input / output unit is not particularly limited. In addition to the wireless connection, the connection can be made with a harness and a connector. Can be connected directly.

When such a hands-free telephone system of the present invention is applied to a vehicle, the can having a general-purpose can shape can be installed in a cup holder mounted on an automobile. In addition to those already mounted on the automobile, those retrofitted are also included. The mounting position of the cup holder is not particularly limited, and may be anywhere such as a center console, a door side, or an upper surface of an instrument panel.

Further, in the hands-free telephone system of the present invention, since the can body is formed in a general-purpose can or in substantially the same shape as this, the design can be freely selected according to the user's preference. . Further, when the user is tired of the previous design, the can can be replaced with a can of another design. Further, since the general-purpose can can be used in the hands-free telephone system of the present invention, it contributes to recycling of empty cans.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 is a sectional view showing a first embodiment of a hands-free telephone system of the present invention, FIG. 2 is a sectional view showing a modification of the embodiment, and FIG. 3 is a circuit block diagram of the embodiment. .

First, the overall configuration of the hands-free telephone system according to the present embodiment will be described. As shown in FIG.
, A hands-free set 1, and electromagnetic induction communication means 3 a and 3 b for communicating voice and data signals between the hands-free set 1 and the mobile phone 2 using electromagnetic induction. It is configured.

The can body 10 is specifically about 60 mm in diameter,
A general-purpose can having a height of about 120 mm or a substantially can having the same shape is used. The upper lid of the general-purpose can used for beverages can be appropriately removed and used, or a dedicated can formed in substantially the same shape as the general-purpose can can be used. This selection may be made according to the user's preference. The material of the side surface of the can body 10 is not particularly limited, and can be formed of aluminum, steel, plastic, or the like.
Aluminum or steel that shields a magnetic field cannot be adopted as a material forming at least the bottom surface, and it is preferable that the bottom surface is formed of plastic. In addition, the size (numerical value) of the above-described can body is merely an example, and in other words, may have any shape that can be easily installed on a cup holder CH, a table, or the like described later. Note that a main body integrally formed of, for example, plastic may be inserted and mounted in the can body 10, and an external microphone 11, an external speaker 12, a control circuit, and the like, which will be described later, may be attached to the main body.

As shown in FIG. 1, the portable telephone 2 is accommodated in the can body 10, and a transmission adapter 3a is provided in the input / output section 250 (see FIG. 11) of the portable telephone 2 for audio and control signals. It is installed. This transmission adapter 3a
As shown in FIG. 3, an FM modulator 31a that modulates an audio signal (downstream audio) received by the mobile phone 2 and a control logic 32a that processes a serial signal (downstream serial) received by the mobile phone 2 A FSK modulator 33a that modulates the carrier, a carrier oscillator 34a that generates the modulated voice signal and serial signal as a carrier,
A transmission loop coil 35a for outputting the carrier as a magnetic field signal.

On the other hand, on the outer bottom surface of the can 10,
The receiving adapter 3b is attached as shown in FIG. As shown in FIG. 3, the reception adapter 3b includes a reception loop coil 31b for detecting a magnetic field generated from the transmission loop coil 35a, a mixer 33b for mixing the reception loop coil 31b with a signal from the local oscillator 32b, and a band-pass filter 34b. , An amplifier 35b for amplifying the input signal,
Control logic 36 for processing control signals of the input signals
b, and an FM demodulator 37b and an FSK demodulator 38b for demodulating an audio signal and a serial signal among the input signals. The control signal, the audio signal, and the serial signal are transmitted to the hands-free set 1 shown in FIG. Output.

The hands-free set 1 includes a receiving adapter 3
After receiving a control signal, an audio signal, and the like from b and performing predetermined processing, the external speaker 12 outputs audio.

In the hands-free telephone system of the present embodiment configured as described above, the input / output unit 25 of the portable telephone 2
If the transmission adapter 3a is attached to the
0, the audio signal received by the mobile phone 2 is sent to the hands-free set 1 via the receiving adapter 3b and output from the external speaker 12 by the electromagnetic induction effect of the direct modulation method. Become. Therefore,
When hands-free operation is desired, it is not necessary to connect a connector each time, and the convenience is remarkably improved. Also,
In the present embodiment, since the FM modulation carrier system is adopted, it is resistant to noise and multiplexing is easy.

In the above-described embodiment, the reception adapter 3b has been described as an example in which the reception loop coil 31b and the processing circuit are integrated, but only the reception loop coil 31b is provided outside the can 10 as shown in FIG. It can be mounted on the bottom and the processing circuit can be provided in a separate place. In this case,
The can body 10 becomes more compact and can be easily installed on the cup holder CH or the like.

In the above-described embodiment, the transmission adapter 3a is attached to the mobile phone 2 and the reception adapter 3b is attached to the can 10; Can be transmitted to the mobile phone 2. further,
A transmission / reception adapter having both a transmission function and a reception function is provided in each of the mobile phone 2 and the can 10 so that the audio signal received by the mobile phone 2 is output from the external speaker 12 of the hands-free set 1 and the hands-free set is provided. The audio signal input from the external microphone of the set 1 may be output to the mobile phone.

Further, in the above-described embodiment, the non-contact communication utilizing the electromagnetic induction effect is performed. However, as the non-contact communication means, for example, an IrDA system can be applied.

Second Embodiment FIG. 4 is a perspective view showing a hands-free telephone system according to a second embodiment of the present invention, FIG. 5 is a plan view of the same embodiment, FIG. 6 is a circuit block diagram of the same embodiment, and FIG. Is a perspective view showing a modification of the embodiment, and FIG. 8 is a perspective view showing the inside of the modification shown in FIG.

First, the overall configuration of the hands-free telephone system according to the present embodiment will be described. As shown in FIG.
And a hands-free set 1 having a can body 10 for accommodating therein.

The can body 10 is specifically about 60 mm in diameter,
A general-purpose can having a height of about 120 mm or a substantially can having the same shape is used. The upper lid of the general-purpose can used for beverages can be appropriately removed and used, or a dedicated can formed in substantially the same shape as the general-purpose can can be used. This selection may be made according to the user's preference. The material of the side surface of the can body 10 is not particularly limited, and can be formed of aluminum, steel, plastic, or the like.

The size (numerical value) of the above-mentioned can body is merely an example, and in short, a cup holder CH described later
Any shape can be used as long as it can be easily installed on a table or table. Further, a main body integrally formed of, for example, plastic is inserted and mounted in the can body 10, and an external microphone 11, an external speaker 12, a call operation unit 14,
15, a control circuit 8 and the like can be attached.

The can body 10 of the hands-free set 1 has a telephone accommodating portion 13 formed therein.
Can be inserted and accommodated.

The can body 10 of the hands-free set 1 is provided with an external microphone 11 and an external speaker 12. The external microphone 11 can be provided on the upper surface of the can body 10 as shown in FIG. 4, or a flexible microphone can be adopted so that the sound collecting portion of the sound can be bent in any direction. it can.

The external microphone 11 is for inputting a voice of a driver or the like in place of the built-in microphone 22 of the mobile phone 2. The voice signal of the driver input from the external microphone 11 is shown in FIGS. Is transmitted to the mobile phone 2 via the harness H, the connector C and the control circuit 8 shown in FIG. 1 and is subjected to signal processing by a built-in control circuit (not shown) of the mobile phone 2 and then transmitted as a radio signal from the built-in antenna 21 to the communication partner side. Sent to

On the other hand, the external speaker 12 is
As shown in FIG. 2, the sound output is attached to the side surface of the can body 10 so as to be directed outward. This external speaker 1
Numeral 2 is for outputting voice from the other party in place of the built-in speaker 23 of the mobile phone 2. As shown in FIGS. 4 and 6, the voice radio signal from the other party received by the built-in antenna 21 is: After signal processing in the control circuit of the mobile phone 2, the harness H, the connector C and the control circuit 8
Is output from the external speaker 12 to the room through the external speaker.

As described above, the control circuit 8 for controlling the transmission and reception of the audio signal and the control signal to and from the built-in microphone 22 and the built-in speaker 23 of the mobile phone 2 is also provided in the can 10 of the hands-free set 1. A battery serving as a power source for the control circuit 8 and the like, an on / off switch (not shown) for the battery power source, a volume switch 14 of the external speaker 12, and an on-hook button 15a and an off-hook button 15b as shown in FIG. A call operation button 15 such as a memory call button 15c is also provided on the upper surface of the can 10.

In this embodiment, the connection between the control circuit 8 of the hands-free set 1 and the portable telephone 2 is established by the control circuit 8
The connector C is connected to the input / output unit 250 (see FIG. 11 for details) of the mobile phone. The input / output unit 25 of the mobile phone 2
0 is an input / output port for an antenna signal and a control signal in addition to the audio signal. In a hands-free telephone system, when connecting to a mobile phone, the input / output unit 25
In addition to using 0, it is also possible to take in only the audio signal into the hands-free set 1 using the earphone jack section of the mobile phone 2, but in this case, transmission and reception of control signals cannot be performed with the hands-free set 1. Therefore, it is necessary to exclusively press the operation button of the mobile phone 2 for a call operation such as an on-hook operation. In the present embodiment, the mobile phone 2
We perform hands-free operation without touching.

The control circuit 8 of the hands-free set 1
The connection method between the mobile phone 2 and the harness H shown in FIG.
In addition to the connection using the connector C, for example, as shown in FIGS.

In the embodiment shown in the figure, a guide 16 provided with a connector C at the bottom thereof is provided inside the can body 10 for guiding the mobile phone 2. The connector C has a structure that can be fitted to the input / output unit 250 of the mobile phone 2. When the mobile phone 2 is inserted along the guide 16, the connection between the input / output unit 250 and the connector C is easily performed. .

In the present invention, a secondary battery can be used as a battery power source in addition to a general-purpose dry battery. If the battery power supply is a secondary battery, a charging terminal is provided,
The secondary battery may be charged by a vehicle battery. By doing so, the vehicle battery power can be supplied from the cigarette terminal or the like, so that the battery can be charged as it is even if the battery capacity is reduced due to long-term use,
It is more convenient than dry batteries. Further, in-vehicle battery power may be directly supplied from a cigarette terminal or the like instead of the battery power.

Incidentally, when the hands-free set 1 of this embodiment is used as a car phone, it can be installed in the cup holder CH as shown in FIG. The cup holder CH includes not only one that is previously installed in the center console of an automobile, but also one that is retrofitted. The mounting position of the cup holder CH is not particularly limited, and may be anywhere such as a center console, a door side, or an upper surface of an instrument panel.

As described above, in the hands-free telephone system of the present embodiment, the control circuit 8 of the hands-free set 1 and the input / output unit 250 of the audio signal and control signal of the portable telephone 2 are used.
Is connected and can transmit and receive control signals, so that various call operations, such as on-hook, off-hook, and dial operation, which had to be depressed on the call operation button of the mobile phone 2, can be performed by the call operation button 1 on the hands-free set 1.
Operations can be performed collectively at 5a, 15b, and 15c. That is, it is very convenient because a call can be made without touching the mobile phone 2.

The embodiments described above are described for facilitating the understanding of the present invention, and are not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

[0048]

As described above, according to the first and second aspects of the present invention, a portable telephone can be accommodated in a general-purpose can or a can having substantially the same shape as the general-purpose can. The phone can be easily installed anywhere and is convenient. In addition, since the communication between the hands-free set and the mobile phone is performed by means of electromagnetic induction communication, the mobile phone can be switched between the hands-free state and the mobile phone state by simply taking the mobile phone in and out, and performing operations such as connector connection. Becomes unnecessary, and the convenience is remarkably improved.

According to the present invention, the portable telephone can be housed in a general-purpose can or a can formed substantially the same shape as the general-purpose can, so that the portable telephone can be easily installed anywhere. And convenient. In addition, since the control circuit of the hands-free set is connected to the input / output section of the voice signal and control signal of the mobile phone, hands-free call operations such as on-hook, off-hook, and dial operation can be performed without touching the mobile phone. It can be operated collectively with the call operation button on the set side, which is convenient.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a hands-free telephone system according to the present invention.

FIG. 2 is a sectional view showing a modification of the first embodiment of the present invention.

FIG. 3 is a circuit block diagram of the first embodiment of the present invention.

FIG. 4 is a perspective view showing a second embodiment of the hands-free telephone system of the present invention.

FIG. 5 is a plan view showing a second embodiment of the present invention.

FIG. 6 is a circuit block diagram of a second embodiment of the present invention.

FIG. 7 is a perspective view showing a modification of the second embodiment of the present invention.

FIG. 8 is a perspective view showing the inside of the modification shown in FIG. 7;

FIG. 9 is a perspective view showing an example of installation of a can according to the present invention.

FIG. 10 is an overall perspective view showing a conventional hands-free telephone system.

FIG. 11 is a partial view showing a conventional hands-free telephone system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Hands-free set 8 ... Control circuit 10 ... Housing 11 ... External microphone 12 ... External speaker 13 ... Telephone accommodating part 14 ... Volume switch (call operation button) 15 ... Call operation button 2 ... Mobile telephone 21 ... Built-in antenna 22 ... Built-in microphone 23 Built-in speaker 250 Input / output unit 3a, 3b Transmitter / receiver adapter C Connector H Harness CH Cup holder

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04M 1/11 H04B 7/26 109G

Claims (6)

[Claims] 1. A portable telephone (2), a general-purpose can or a can (10) formed in substantially the same shape as this, and at least one of an external microphone (11) and an external speaker (12) Hands-free set with (1)
A hands-free telephone system comprising: the hands-free set (1); and the mobile phone (2).
A hands-free telephone system, wherein communication with the telephone is performed by communication means of electromagnetic induction. 2. The electromagnetic induction communication means includes a transmitting and / or receiving adapter (3a) mounted on the mobile phone (2) and a transmitting and / or receiving adapter provided on the can (10). The hands-free telephone system according to claim 1, further comprising (3b). 3. A portable telephone (2) and a general-purpose can or a can (10) formed in substantially the same shape as the general-purpose can, wherein the can contains at least the telephone. A hands-free set (1) provided with a housing (13), an external microphone (11), an external speaker (12), a call operation button (14, 15), and a control circuit (8) for these; A free telephone system, wherein a control circuit (8) of the hands-free set (1) and an input / output unit (250) of a voice signal and a control signal of the mobile phone (2) are connected. Hands-free phone system. 4. The control circuit (8) and the input / output unit (25)
0) connection with harness (H) and connector (C)
4. The hands-free telephone system according to claim 3, wherein 5. The control circuit (8) and the input / output unit (25)
4. A hands-free telephone system according to claim 3, wherein the connection with the telephone is directly made by the connector. 6. A hands-free telephone system according to claim 1, wherein said can body (10) can be installed on a cup holder (CH) mounted on an automobile.