JP2002033797A - Device for switching hands-free portable telephone set, and audio device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for switching hands-free portable telephone set and audio device, with which the connection of a portable telephone set and an audio device can be switched automatically, in a hands-free state on the basis of the state of the portable telephone set. SOLUTION: A switching device 1A, to which a portable telephone set, 2 provided with a hands-free function and an audio device 3 are connected, has a switching control means 4A for receiving a control signal CS 1 from the portable telephone set 2, and performing control for switching the connection of the portable telephone set 2 and the audio device 3, on the basis of that control signal. This switching control means 4A performs control for switching audio signals to be inputted to common earphones 5 and 6 from the audio device 3 to the portable telephone set 2, when the portable telephone set 2 is turned into calling state; while switching the audio signals to be inputted to the common earphones 5 and 6 from the portable telephone set 2 to the audio device 3, when a call by means of the portable telephone set 2 is completed on the other hand.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching device in which a portable telephone having a hands-free function and an audio device are connected, and the connection between the two is automatically switched hands-free based on the state of the portable telephone.

[0002]

2. Description of the Related Art In recent years, when using a mobile phone, a so-called hands-free function has been added to automatically connect after an incoming call without using a hand to enable a call and automatically disconnect when the call ends. Use cases are increasing.
A usage form in which an audio device is further connected to the portable telephone having the hands-free function so that music or the like can be listened to by earphones except during a call is also considered.

FIG. 8 shows a specific example of the configuration in this use mode. The portable telephone 2 and the audio device 3 are connected via the switching device 90 to the earphone microphone 5 and the earphone 6.
The portable telephone 2 and the audio device 3 can be connected to each other manually.

More specifically, the portable telephone 2 and the switching device 9
0 is a plug 91a connected to the earphone terminal 2a of the mobile phone 2.
The audio signal line 91 for a mobile phone is connected via the. In the audio device 3 and the switching device 90, an output signal line 92 for audio is connected to an output terminal 3a of the audio device 3 via a plug 92a.
Is connected to an input terminal T5 of a manual switch 93 provided in the switching device 90. And this manual switch 9
The output signal line 93 for audio connected to the output terminal T6 of No. 3 is connected to the audio signal line 92 for mobile phone at the point P in the figure, and is led out of the switching device 90 as a signal line 95. And are connected to the earphone microphone 5 and the earphone 6. This earphone microphone 5 is a receiver 51
And a microphone 52, and the earphone 6 includes a receiver 61.

In the above configuration, when the portable telephone 2 is in the standby state, the manual switch 93 is in the "ON" state, and the output signal TS9 from the audio device 3 is output.
2 is input to the earphone microphone 5 and the earphone 6 via the signal lines 92, 94 and 95, and the music and the like from the audio 3 are output from the receivers 51 and 61.

When the mobile phone 2 is in the transmission / reception state, the audio signal TS91 from the mobile phone 2 is input to the earphone microphone 5 and the earphone 6 via the signal lines 91 and 95, and the music from the audio 3 is received from the receivers 51 and 61. In addition to the above, a sound or the like from the mobile phone 2 is output. At this point, the user operates the manual switch 93 to set the switch to the “OFF” state, cuts off the output signal for audio, and uses the earphone microphone 5 to talk with the mobile phone 2.

When the telephone call with the portable telephone 2 is completed, the manual switch 93 is again operated to turn it on, and the output signal for audio is transmitted through the signal lines 92, 94 and 95 to the earphone microphone 5 and the earphone. 6 and music from audio is output from each of the receivers 51 and 61.

[0008] Here, the audio device 3 is a CD, M
It is a portable player that plays back music data and the like recorded on various recording media such as optical disks such as D and DVD, cassette tapes, DAT magnetic tapes, card-type and stick-type semiconductor memories.

[0009]

However, in the configuration in which the connection between the portable telephone and the audio device is manually switched by using the above-described switching device, there is a problem in that the operation is cumbersome.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and a hands-free portable telephone capable of automatically switching a connection between a portable telephone and an audio device in a hands-free manner based on the state of the portable telephone. An object of the present invention is to provide a switching device for an audio device.

[0011]

SUMMARY OF THE INVENTION The present invention relates to a switching device for connecting a portable telephone equipped with a hands-free function and an audio device to switch between the two, and receiving a control signal from the portable telephone, Switching control means for controlling the connection between the mobile phone and the audio device based on the audio signal input to the common earphone from the audio device to the mobile phone when the mobile phone enters a transmission / reception state. On the other hand, when the mobile phone completes transmission / reception, control is performed to switch the audio signal input to the common earphone from the mobile phone to the audio device.

[0012] According to the above configuration, the connection signal is received from the portable telephone and the switching control means automatically switches the connection between the portable telephone and the audio device in a hands-free manner. High switching can be performed, and convenience in use can be improved.

In the above switching device, if the control signal is configured to be a serial signal, the state of the mobile phone can be accurately and reliably grasped using the existing serial signal format, thereby further improving the reliability without malfunction. High switching can be performed.

The switching control means includes a control circuit connected to the mobile phone, a telephone switching means connected to the mobile phone, an audio switching means connected to the audio device, and an output signal from the control circuit. An inverting inverter, wherein one of the telephone switching means and the audio switching means is connected to the control circuit, and the other is connected to the control circuit via the inverter, and the telephone switching means and the audio switching means are provided. Can be configured to be connected to a common earphone, and highly reliable switching without malfunction can be performed with a simple circuit configuration.

[0015] If the switching control means is configured to output a ringtone from a portable telephone to the earphone in a state where the volume is lowered, and to return to a normal volume after a predetermined time has elapsed, and to switch to a talking state, the system is used. The above state is more preferable.

If the switching control means is configured to be connectable with an operating means for operating a mobile phone, the operating means can be used to make a direct dial call to make a call,
It is possible to read out the memory dial stored in the memory of the switching device or the mobile phone and make a call.
Further, it is possible to set the mode of the mobile phone in various modes by providing a mode switching key in the operation means. Since this operation means can be detached from the switching device, it is possible to appropriately change the configuration according to the usage of the user.

If the operating means has a display section, the data input using the operating means is displayed on the display section, and it is possible to confirm the input data such as a number by looking at the data. It becomes possible. Also, when a mobile phone receives a call, it is possible to display the telephone number of the other party on the display unit.

If the switching control means is provided with a wireless transmitting / receiving means for controlling the switching between the portable telephone and the audio device by transmitting / receiving the audio signal and the control signal wirelessly, the cable connection of each device is eliminated and the wireless connection is eliminated. Therefore, the problem that the cable gets in the way when used can be largely eliminated, and the operation becomes more convenient.

[0019]

Embodiments of the present invention will be specifically described below with reference to the drawings.

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
1 shows a configuration example of a switching device 1A of a mobile phone 2 and an audio device 3 having a hands-free function according to the embodiment.

This switching device 1A is connected to a portable telephone 2 having a hands-free function and an audio device 3,
It has a switching control means 4A for switching the connection between the two, receiving a control signal CS1 by a serial signal from the mobile phone 2, and controlling to switch the connection between the mobile phone 2 and the audio device 3 based on the control signal CS1.

The switching control means 4A switches the audio signal input to the common earphones 5 and 6 from the audio device 3 to the mobile phone 2 when the mobile phone 2 enters the transmission / reception state, while the mobile phone 2 completes the transmission / reception. Then, control is performed to switch the audio signal input to the common earphones 5 and 6 from the mobile phone 2 to the audio device 3.

More specifically, the switching control means 4A includes a control circuit 41A connected to the portable telephone 2, a telephone switching means 42 connected to the portable telephone 2, and an audio switching connected to the audio device 3. Means 4
3 and an inverter 44 for inverting the control signal CS2 output from the control circuit 41A. The telephone switching means 42 is connected to the control circuit 41A, and the audio switching means 43 is connected to the control circuit 41A via the inverter 44. The output sides of the telephone switching means 42 and the audio switching means 43 are connected to the common earphones 5 and 6.

More specifically, the portable telephone 2 and the switching device 1
In A, a mobile phone input / output signal line 11 is connected to a serial signal input / output terminal 2b of the mobile phone 2 via a connector 11a, and a control signal CS1 and a voice signal TS1 are input / output. The input / output signal line 11 branches into a control signal line 21 and an audio signal line 12 at a point K in FIG.
Is connected to the input terminal T1 of the telephone switching means 42 provided in the switching device 1A. The audio signal line 13 for the mobile phone connected to the output terminal T2 of the switching means 42 for the telephone is connected to the output signal line 15 for audio at the point M in the drawing, and the switching device 1A is used as the signal line 16. , And branches off in the middle to be connected to the earphone microphone 5 and the earphone 6. The earphone microphone 5 includes a receiver 51 and a microphone 52, and the earphone 6 includes a receiver 61.

The control signal line 21 is connected to the control circuit 41A, and the control signal CS1 from the portable telephone 2 is transmitted to the control circuit 41A.
A is input to A. A control signal line 22 is connected to an output side of the control circuit 41A. The control signal line 22 branches into a control signal line 23 and a control signal line 24 at a point L in the figure. The control signal line 23 is connected to a telephone switching means 42. And the control signal CS2
Is input to the telephone switching means 42. The control signal line 24 is connected to the inverter 44, and the control signal CS2 is inverted to form a control signal CS3. The control signal CS3 is input to the audio switching means 43 via the control signal line 25.

In the audio device 3 and the switching device 1A, an output signal line 14 for audio is connected to an output terminal 3a of the audio device 3 via a plug 14a, and the output signal line 14 is provided in the switching device 1A. It is connected to the input terminal T3 of the audio switching means 43. The audio output signal line 15 connected to the output terminal T4 of the audio switching means 43 is connected to the audio signal line 13 for the mobile phone at the point M in the drawing. , And branches off in the middle to be connected to the earphone microphone 5 and the earphone 6.

In the above configuration, when the portable telephone 2 is in the standby state, the telephone switching means 42 is in the "OFF" state by the control signal CS2, and the audio switching means 43 is "O" by the control signal CS3.
N "state, the output signal TS2 from the audio device 3 is transmitted through the signal lines 14 to 16 to the earphone microphone 5
And the earphone 6, and the receiver 51 and 61 output music and the like from the audio device 3.

When the mobile telephone 2 is in the transmission / reception state, the telephone switching means 42 is set to "O" by the control signal CS2.
N "state, the audio signal TS1 from the mobile phone 2 is input to the earphone microphone 5 and the earphone 6 via the signal lines 11 to 13 and 16, and the audio and the like from the mobile phone 2 are output from the receivers 51 and 61. Then, it is possible to make a call with the mobile phone 2 using the earphone microphone 5. At the same time, the audio switching means 43 is turned off by the control signal CS3, and the audio output signal is cut off.

When the telephone conversation with the portable telephone 2 is completed, the telephone switching means 42 is turned "OFF" again by the control signal CS2, and the audio switching means 43 is simultaneously turned "O" by the control signal CS3.
N "state and the output signal T from the audio device 3
S2 is input to the earphone microphone 5 and the earphone 6 via the signal lines 14 to 16, and music and the like from the audio device 3 are output from the receivers 51 and 61.

As described above, according to the above configuration, the switching control means 4A receives the control signal CS1 from the portable telephone 2, and the portable telephone 2 and the audio device 3
Since the connection is automatically switched in a hands-free manner, highly reliable switching without malfunction can be performed, and the convenience in use can be improved.

Further, since the existing serial signal format is used as the control signal CS1, a simple circuit configuration can be achieved, and the state of the mobile phone 2 can be accurately and reliably grasped to further reduce the error. It is possible to perform highly reliable switching without operation.

(Second Embodiment) FIG. 2 shows a second embodiment of the present invention.
1 shows a configuration example of a switching device 1B of a mobile phone 2 and an audio device 3 having a hands-free function according to the embodiment.

The switching device 1B is different from the switching device 1A according to the first embodiment in that the operating means 7A for operating the portable telephone 2 can be connected to the switching control means 4B having the control circuit 41B. The other configuration is the same as that of the first embodiment. Therefore, only the differences will be described below.

The operating means 7A includes a ten key 7a including an * key and a # key, and a transmission key 7 as a function key 7c.
3, a clear key 74, a mode switching key 75, and a display unit 7b, and have the same functions as the operation unit 2c of the mobile phone 2.

For example, using this operating means 7A, the user operates the numeric keypad 7a to input a dial number, and
By pressing 3, a call can be made. At that time, since the input data is displayed on the display unit 7b,
The number and the like can be confirmed by looking at it. When there is an error in the input data, the user presses a clear key 74 to clear the input data so that re-input can be easily performed. The mode is switched using the mode switching key 75, and the control circuit 41B of the switching device 1B is switched.
Alternatively, a memory dial stored in the memory of the mobile phone 2 can be read and transmitted.

Further, when it is not desired to answer the call, the portable telephone 2 can be set to the answer hold mode by using the mode switching key 75. Even in that case, earphones 5, 6
As a result, it is possible to know that the call has been made, and in addition, the telephone number or the like of the other party can be displayed on the display unit 7b, so that the call can be made again to the other party if necessary.

Since the operating means 7A can be detached from the switching device 1B, the operating means 7A can be used by appropriately changing the configuration in accordance with the usage of the user.

FIG. 3 shows an example of a specific mode of use of the switching device 1B having the above configuration. The switching device 1B includes an audio device 3 as an MD player and a remote controller 9.
And a cable connected via the
The earphone 6 and the operating means 7B are connected by cable. The switching device 1B and the mobile phone 2 have their serial signal input / output terminals directly connected by connectors. Here, the operation unit 7B has a simplified configuration by eliminating the display unit from the operation unit 7A.

In this embodiment, the switching device 1B, the mobile phone 2 and the audio device 3 are housed in a bag 30, and the remote controller 9 and the operating means 7B of the mobile phone 2 are hooked on a breast pocket or the like and fixed with hooks. Are used with the earphone microphone 5 and the earphone 6 attached to the ears of the user.

Further, as a modification, a use form as shown in FIG. 4 may be adopted. The switching device 1B includes a microphone 8
And the operating means 7B provided with a cable are connected by a cable. A remote controller 9 connected to the audio device 3 via a cable is plugged into the repeater 8 and connected to the right,
Two left earphones 6 are plug-connected. The switching device 1B and the mobile phone 2 have their serial signal input / output terminals directly connected by connectors.

In this embodiment, the switching device 1B, the mobile phone 2 and the audio device 3 are housed in a bag 30, and together with the repeater 8 having the microphone 8, the audio device 3
The remote control 9 is fixed to a breast pocket or the like with a hook, and the operating means 7B of the mobile phone 2 is also fixed in the same manner, and is used with the earphones 6 attached to the left and right ears.

(Third Embodiment) FIG. 5 shows a third embodiment of the present invention.
1 shows a configuration example of a switching device 1C for a portable telephone 2 and an audio device 3 having a hands-free function according to the embodiment.

This switching device 1C is different from the switching device 1B according to the second embodiment in that the switching control means 4C
The difference is that the ring tone from the mobile phone 2 is output to the earphone microphone 5 and the earphone 6 in a state where the volume is lowered, and after a predetermined time elapses, the volume is controlled to return to the normal volume and switch to the talking state. This is similar to the case of the second embodiment.

In this switching device 1C, a portable telephone 2 having a hands-free function and an audio device 3 are connected.
It has a switching control means 4C for switching the connection between the two and receiving a downlink serial signal RXD1 from the mobile phone 2 and controlling to switch the connection between the mobile phone 2 and the audio device 3 based on the received serial signal RXD1.

The switching control means 4C switches the audio signal input to the common earphone microphone 5 and the earphone 6 from the audio device 3 to the portable telephone 2 when the portable telephone 2 enters the transmitting / receiving state, while the portable telephone 2 transmits and receives the signal. Is completed, control is performed to switch the audio signal input to each of the earphones 5 and 6 from the mobile phone 2 to the audio device 3.

More specifically, the switching control means 4C includes a control circuit 41C connected to the mobile phone 2, a telephone first switching means 53 and a telephone second switching means 54 connected to the mobile phone 2, An audio L-side switching unit 51 and an audio R-side switching unit 52 connected to the audio device 3;
Inverter 55 for inverting a control signal output from 1C
The telephone first switching means 53 and the telephone second switching means 54 are connected to the control circuit 41C, and the audio L-side switching means 51 and the audio R-side switching means 52 are connected to the control circuit 41 via an inverter 55. The output side of the audio L-side switching means 51 and the audio R-side switching means 52 is connected to the common earphone microphone 5 and the earphone 6.

More specifically, the downstream serial signal RXD1 from the mobile phone 2 is input to the control circuit 41C from the downstream serial signal output terminal RXD of the switching device 1C, and the control signals CS11A and CS11B based on the signal are transmitted to the control circuit 4C.
1C is input to the telephone first switching means 53 and the telephone second switching means 54, respectively, and the control signal CS11A is further input to the inverter 55, and the inverted control signal CS12 is converted to the audio L-side switching means 51 and the audio. Input to the R-side switching means 52.

Also, the audio signal T received from the portable telephone 2
S11A is a reception audio signal output terminal SP of the switching device 1C.
After being amplified by the amplifier 58, the amplified received voice signal TS11B is input to the input terminals T15 and T17 of the first switching means 53 for telephone and the second switching means 54 for telephone. Resistors 56 and 57 are connected to the output terminals T16 and T18 of the switching means 53 and 54, respectively.
11C is a reception audio signal output terminal TSL of the switching device 1C.
2 to the earphone microphone 5. Here, the resistance 5
6 and the resistance value R2 of the resistor 57 are R1> R
2 (for example, R1 = 2.7 kΩ, R2 = 10Ω)
Is set to meet. The control circuit 41C
The control signal CS11B is set so as to be output after a predetermined time (for example, 3 seconds) from the control signal CS11A, and the ON operation timing of the telephone first switching means 53 and the telephone second switching means 54 is set. I'm staggered.

For this reason, first, the first switching means 53 for the telephone is turned on by the control signal CS11A, and the received voice signal TS11B is turned on by the resistor 5 having a large resistance value.
6, the received audio signal TS11C is converted into a small-current signal by the received audio signal output terminal TS of the switching device 1C.
L2 is input to the earphone microphone 5. When the predetermined time has elapsed, the second switching means 54 for the telephone is turned on by the control signal CS11B, and the received voice signal TS11B also passes through the resistor 56 having a small resistance value. The combined received audio signal TS11C is input to the earphone microphone 5 from the received audio signal output terminal TSL2 of the switching device 1C as a large current signal.

Thus, the ring tone from the portable telephone 2 is output to the earphone microphone 5 with the volume lowered at first, and after a predetermined time has elapsed, the volume is returned to the normal volume, and control to switch to the talking state is enabled.

In the call state, the audio signal TS13A from the earphone microphone 5 is input to the MIC terminal of the switching device 1C, amplified by the amplifier 59, and then the amplified received audio signal TS11B is transmitted from the MICOUT terminal to the portable telephone 2
Is input to

The control circuit 41C includes an operating means 7C.
From the control circuit 41C, and the uplink serial signal TXD1 output from the control circuit 41C based on the control signal CS13.
Is input to the mobile phone 2 from the upstream serial signal output terminal TXD of the switching device 1C. Thus, the mobile phone 2 can be operated by the operation means 7C. Here, the operation means 7C includes a numeric keypad 7a including a * key and a # key, a display unit 7b, and a function key 7c, and has functions similar to those of the operation unit 2c of the mobile phone 2.

In the above configuration, when the mobile phone 2 is in the standby state, the control signals CS11A, CS11B
As a result, the telephone first switching means 53 and the telephone second switching means 54 are in the "OFF" state, and the control signal CS12 causes the audio L-side switching means 51 and the audio R-side switching means 52 to be in the "ON" state. The output signals TS12R and TS12L input from the audio device 3 to the TSR1 terminal and the TSL1 terminal of the switching device 1C are output from the TS1R of the switching device 1C.
The signals are output from the R2 terminal and the TSL2 terminal, input to the earphone microphone 5 and the earphone 6,
1 outputs music or the like from the audio device 3.

When the portable telephone 2 is in the transmission / reception state, the first switching means 53 for the telephone is first turned "ON" by the control signal CS11A, and the ring tone from the portable telephone 2 is lowered in volume. The second switching means 54 for the telephone is turned on by the control signal CS11B, and the receiver 5
1, the voice and the like from the mobile phone 2 are output at a normal volume, so that the mobile phone 2 can talk using the earphone microphone 5. At the same time, the L-side switching means 51 for audio is
And the audio R-side switching means 52 is "OF"
The state becomes F ", and the audio output signal is cut off.

Then, at the point in time when the communication by the portable telephone 2 is completed, the first switching means 53 for telephone and the second switching means 54 for telephone are turned off by the control signals CS11A and CS11B again, and at the same time, the control signal CS12 is outputted. As a result, the audio L-side switching means 51 and the audio R-side switching means 52 are turned "ON", and the output signals TS12R and TS12L from the audio device 3 are output from the TSR2 terminal and the TSL2 terminal of the switching device 1C, and the earphone Music is input from the microphone 5 and the earphone 6, and music and the like from the audio device 3 are output from the receivers 51 and 61.

As described above, the switching control means 4C outputs the ringing tone from the portable telephone 2 to the earphone with the volume lowered, returns to the normal volume after a predetermined time has elapsed, and switches to the talking state. With such a configuration, a more preferable state for use is obtained.

(Fourth Embodiment) FIG. 6 shows a fourth embodiment of the present invention.
1 shows a configuration example of a switching device 1D of a mobile phone 2 and an audio device 3 having a hands-free function according to the embodiment.

This switching device 1D is different from the switching device 1C according to the third embodiment described above in that the switching control means 4D is provided with a wireless transmitting / receiving means for transmitting and receiving a voice signal and a control signal wirelessly to and from the mobile phone 2. The difference is that control for switching the connection of the audio device 3 is performed, and the other configuration is the same as that of the third embodiment. Therefore, only the differences will be described below, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

This switching device 1D includes a switching control unit 4D
Is divided into a main body device 60 connected to the mobile phone 2 and a wireless operation unit 70 connected to the earphone microphone 5, the earphone 6, and the audio device 3, and a wireless connection between these devices 60, 70 is provided. Is used to transmit and receive the audio signal and the control signal.

More specifically, the wireless operation unit 70
The switching device 1C has a configuration in which a transmission / reception circuit 71 and an antenna 72 are added to the switching device 1C, and the audio signal TS11A received from the mobile phone 2 and the downlink serial signal RXD
1 is received by the transmission / reception circuit 71 from the main body device 60 via the antenna 72, and when the mobile phone 2 is in a talking state, the audio signal T input from the earphone microphone 5 is input.
S13A is transmitted to the main unit 60 by the transmission / reception circuit 71 via the antenna 72. Further, it transmits to the main unit 60 an upstream serial signal TXD1 from the control circuit 41C, which is output based on an input from the operation means 7C of the wireless operation unit 70.

The main unit 60 includes a control circuit 61, a transmission / reception circuit 62, an antenna 63, and an amplifier 59, and outputs the downlink serial signal RXD1 from the mobile phone 2 to the switching device 1C.
Is input to the control circuit 61 from the downstream serial signal output terminal RXD, and the downstream serial signal RXD1 is input to the transmission / reception circuit 62 and transmitted to the wireless operation unit 70 via the antenna 63. Further, the reception audio signal TS11A from the mobile phone 2 is input to the transmission / reception circuit 62 from the reception audio signal output terminal SP of the main device 60, and transmitted to the wireless operation unit 70 via the antenna 63. .

On the other hand, when the mobile phone 2 is in a talking state, the main unit 60 receives the audio signal TS13A input from the earphone microphone 5 from the wireless operation unit 70,
This audio signal TS13A is input to the transmission / reception circuit 62,
After being amplified by the amplifier 59, the amplified received audio signal TS11B is input to the mobile phone 2 from the MICOUT terminal.

The main unit 60 also receives the upstream serial signal TXD1 from the control circuit 41C output based on the input from the operating means 7C of the wireless operation unit 70, and transmits this upstream serial signal TXD1 to the transmission / reception circuit 62. The signal is input to the mobile phone 2 via the upstream serial signal output terminal TXD of the main device 60 via the control circuit 61. Thus, the mobile phone 2 can be wirelessly operated by the operation unit 7C of the wireless operation unit 70.

FIG. 7 shows an example of a specific mode of use of the switching device 1D having the above configuration. The remote control 9 of the audio device 3 as an MD player is plug-connected to the wireless operation unit 70 of the switching device 1D, and the earphone microphone 5 and the earphone 6 are cable-connected.
Further, the serial signal input / output terminals of the main body device 60 and the mobile phone 2 are directly connected by connectors. The wireless operation unit 70 includes a numeric keypad 7a including a * key and a # key as an operation unit, a display unit 7b, and a function key 7c, and has functions similar to those of the operation unit 2c of the mobile phone 2.

In this embodiment, the main body device 60, the mobile phone 2 and the audio device 3 are housed in a bag 30, the remote controller 9 and the wireless operation unit 70 are fixed to a breast pocket or the like by hooks, and left and right ears are fixed. The earphone microphone 5 and the earphone 6 are used in a state where they are mounted respectively. According to this embodiment, since the cable connection between the main body device 60 and the wireless operation unit 70 can be eliminated and the wireless operation unit 70 can be made wireless, the problem that the cable gets in the way at the time of use is largely eliminated and the operation becomes more convenient. .

As described above, the switching device between the hands-free portable telephone and the audio device according to the present invention is not limited to the specific configuration of each of the above-described embodiments, and the configuration is appropriately modified, added or deleted as needed. Needless to say, this may be done.

For example, in the above-described fourth embodiment, an audio signal and a control signal are wirelessly transmitted and received between the wireless operation unit 70 having an operation unit and the main unit 60,
Although the configuration example in which the mobile phone can be operated by the operation unit of the wireless operation unit 70 has been described, the present invention is not limited to this. Alternatively, the portable telephone and the audio device may be automatically connected in a hands-free manner by wireless connection.

Also, in the above description, an example has been described in which the switching control means performs control for switching the audio signal input to the common earphone from the audio device to the mobile phone when the mobile phone enters the transmission / reception state. However, the present invention is not limited to this. Control may be performed such that the audio device is temporarily stopped when the mobile phone enters a transmission / reception state, and the reproduction of the audio device is resumed when the mobile phone completes transmission / reception. In this way, even if the music or the like that was being listened to is interrupted by telephone, it is possible to resume the reproduction from that part, and it is not possible to miss a desired place.

Further, in the above, the configuration example in which the audio device is connected by the cable has been described. However, the present invention is not limited to this, and the present invention is not limited to the wireless type in which the audio signal and control signal of the audio device are transmitted and received wirelessly. Is also good.

Further, in the above description, a case where a conversation is performed by using a portable telephone is described as an example, but the present invention can be applied to a case where an electronic mail is transmitted and received. In that case, when an e-mail is received, a ringtone is input to the earphone to inform the user of the arrival, and then the user operates the operation unit of the switching device to control the mobile phone by a serial signal, What is necessary is just to display the content of the e-mail received by the mobile phone on the display unit of the operation means.

[0071]

As described above, according to the switching device for a hands-free portable telephone and audio device of the present invention,
It receives a control signal from the mobile phone and automatically switches the connection between the mobile phone and the audio device automatically and hands-free by the switching control means based on the control signal, so that reliable switching without malfunction can be performed and used. This can improve the convenience in performing the operation.

If the control signal is a serial signal, the state of the portable telephone can be accurately and reliably grasped using the existing serial signal format, so that switching can be performed with high reliability without malfunction. be able to.

The switching control means includes a control circuit connected to the portable telephone, a telephone switching means connected to the portable telephone, an audio switching means connected to the audio device, and an output signal from the control circuit. An inverting inverter, wherein one of the telephone switching means and the audio switching means is connected to the control circuit, and the other is connected to the control circuit via the inverter, and the telephone switching means and the audio switching means are provided. Can be configured to be connected to a common earphone, and a simple circuit configuration can be used to perform highly reliable switching without malfunction.

When the switching control means is configured to output the ringtone from the portable telephone to the earphone in a state where the volume is lowered, and to return the volume to the normal volume after a predetermined time has elapsed, and to switch to the talking state. The above state is more preferable.

If the switching control means is configured to be connectable with an operation means for operating a mobile phone, the operation means can be used to make a direct dial call to make a call,
It is possible to read out the memory dial stored in the memory of the switching device or the mobile phone and make a call. Further, a mode switching key can be provided on the operation means to set the mobile phone in various modes. This operation means
Since it can be removed from the switching device, the configuration can be appropriately changed according to the usage form of the user.

If the operating means is provided with a display unit, the data input using the operating means is displayed on the display unit, so that it is possible to confirm the input data such as a number by looking at the data. it can. Further, when a mobile phone receives a call, the telephone number of the other party can be displayed on the display unit.

If the switching control means is provided with wireless transmission / reception means to perform control for switching the connection between the portable telephone and the audio device by transmitting / receiving the audio signal and the control signal wirelessly, the cable connection of each device is eliminated and the wireless connection is eliminated. Therefore, the problem that the cable gets in the way when used can be largely eliminated and the operation becomes more convenient.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration example of a switching device between a handsfree mobile phone and an audio device according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration example of a switching device between a hands-free mobile phone and an audio device according to a second embodiment of the present invention.

FIG. 3 is a diagram showing an example of a specific usage pattern of a switching device for a hands-free mobile phone and an audio device according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a modified example of a specific usage pattern of the switching device between the hands-free mobile phone and the audio device according to the second embodiment of the present invention.

FIG. 5 is a block diagram illustrating a configuration example of a switching device between a hands-free mobile phone and an audio device according to a third embodiment of the present invention.

FIG. 6 is a block diagram illustrating a configuration example of a switching device between a hands-free mobile phone and an audio device according to a fourth embodiment of the present invention.

FIG. 7 is a diagram showing an example of a specific usage pattern of a switching device for a hands-free mobile phone and an audio device according to a fourth embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration example of a conventional hands-free mobile phone and audio device switching device.

[Explanation of symbols]

 1A, 1B, 1C, 1D switching device 2 mobile phone 3 audio device 4A, 4B, 4C, 4D switching control means 5 earphone microphone 6 earphone 7A, 7B, 7C operation means 7b display unit 41A, 41B, 41C, 61 control circuit 42 Telephone switching means 43 Audio switching means 44 Inverter 51 Audio L-side switching means 52 Audio R-side switching means 53 Telephone first switching means 54 Telephone second switching means 62, 71 Transmission / reception circuit (transmission / reception means)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 1/725 H04M 1/725 F term (Reference) 5K023 AA07 BB11 EE04 EE12 GG12 HH02 HH04 HH07 HH10 LL05 MM14 MM19 MM25 NN06 PP02 PP12 5K027 AA11 BB02 EE15 FF02 FF22 FF25 HH03 HH29 KK01 KK07 MM04 MM17

Claims (7)

[Claims] 1. A switching device for connecting a mobile phone having a hands-free function and an audio device and switching between the two, receiving a control signal from the mobile phone and, based on the control signal, switching between the mobile phone and the audio device. Switching control means for controlling connection switching, wherein the switching control means switches the audio signal input to the common earphone from the audio device to the mobile phone when the mobile phone enters a transmission / reception state, A switching device for switching a voice signal input to a common earphone from a mobile phone to an audio device when the process is completed. 2. The switching device according to claim 1, wherein the control signal is a serial signal. 3. The switching control means includes a control circuit connected to a mobile phone, a telephone switching means connected to the mobile phone, an audio switching means connected to an audio device, and an output from the control circuit. An inverter for inverting a signal, one of the telephone switching means and the audio switching means is connected to the control circuit, and the other is connected to the control circuit via the inverter, and the telephone switching means and the audio 3. The switching device according to claim 1, wherein an output side of the switching means is connected to a common earphone. 4. The switching control means outputs a ringtone from a mobile phone to an earphone in a state in which the volume is reduced, and returns to a normal volume after a predetermined time has elapsed to perform a control to switch to a talking state. A switching device for a hands-free mobile phone and an audio device according to claim 2. 5. An apparatus for switching between a hands-free mobile telephone and an audio device according to claim 1, wherein an operation means for operating a mobile telephone is connectable to said switching control means. 6. The switching device according to claim 5, wherein said operation means includes a display unit. 7. The switching control means comprises a wireless transmission / reception means for wirelessly transmitting and receiving an audio signal and a control signal to control connection between a mobile phone and an audio device. The switching device for a hands-free mobile phone and an audio device according to any one of the above.