KR200266290Y1 - Switching apparatus for cellular phone onto hands-free mode - Google Patents

Abstract

The present invention relates to a handsfree kit of a mobile phone;

Connection jack (J) for connecting to mobile phone (H), hands-free circuit (CT), amplifier (AMP), speaker (SP), microphone (MC), control button (B) with a built-in conventional amplifier and power rectifier circuit ), Hands-free kit (HK) of a mobile phone having a power supply circuit (PW),

A sign language signal detecting unit (D) for detecting the presence or absence of a sign signal, a microcomputer (MPU) for controlling the operation of the operation button (B), and a driving transistor (TR); The microcomputer (MPU) signal triggers a driving transistor (TR) at the time of operation of the operation button (B) and uses it as an operating signal to the microcomputer's built-in microcomputer. Detects and operates the hands-free circuit CT and the microcomputer as different modes even if the same operation button B is operated according to the presence or absence of a sign language.

The operation button (B) of the hands free kit (HK) has a larger operating area and size than the operation button of the mobile phone (H), and further has luminous and light-emitting means, thereby improving visibility and operability. do.

Description

Switching apparatus for cellular phone onto hands-free mode}

The present invention relates to a hands-free kit for a mobile phone, and provides a hands-free kit with a configuration that can improve operation performance while providing convenience to a call while driving by improving an operation configuration with a hands-free mounted in a vehicle. More specifically, it is configured to perform a judgment and operation such as switching a mobile phone to a call or a redial mode using only the operation of a hands-free operation button, which is relatively easy to operate due to the large size of the operation button. It is about.

In recent years, mobile phones are rapidly spreading, and thus, the use of a handsfree kit mounted on a vehicle has become common.

In addition, the direct use of mobile phones while driving is regulated by law in order to prevent traffic accidents caused by the reduction of attention due to the use and operation of mobile phones while driving, and most drivers are hands-free or external speaker-equipped earphones. Is using hands free in the form of a necklace.

The main implementation of the functions of hands-free kits (aka speaker phones), such as most mobile phones currently in use, is to make a call using the call switch of the mobile phone while the hands-free is connected to the mobile phone mounted in the hands-free cradle. It is structured to hang or receive.

In addition, the termination of the call is configured to end the call only by using the call switch of the mobile phone, and is installed in a relatively narrow space.

Since the operation of the mobile phone operation switch is very small, the driver must operate the operation switch by paying attention at the beginning or end of the call. It is a bunch. This is thought to be because it requires more attention and concentration to operate the operation switch of the mobile phone, which is getting smaller and smaller than a normal call.

The present invention is conceived in view of the problems of the operation of the hands-free kit of the mobile phone of the general conventional configuration described above, and has a single operation button that can be manufactured as a relatively large size and a larger size in accordance with the present invention. By using the button switch mounted on the hands-free handset with improved operation concentration, you can answer or redial a call, as well as end a call. Its purpose is to allow the operation of all mobile phones that are normally required.

In addition, when the other party terminates the call, the secondary purpose is to automatically turn off the hands-free operation to prevent current consumption.

This is also useful for wireless handsfree circuits such as wireless earphones. You can answer or redial a mobile phone call from the wireless handsfree remote and check the end of the call and terminate the wireless communication with BASE. The aim is to provide a way to minimize power consumption.

Another object of the hands-free kit of the mobile phone of the present invention is to simplify the number and manipulation of buttons disposed on the hands-free device as much as possible to minimize the distraction of the driver's attention and thereby reduce the incidence of traffic accidents.

1 is a circuit block diagram showing a wiring configuration in an external earphone-speaker use mode in a typical cellular phone to which a hands-free kit of the cellular phone of the present invention is applied.

Figure 2 is a schematic block diagram of a hands-free kit of the mobile phone of the present invention as a block diagram implemented in the circuit of the hands-free.

Figure 3 is a block diagram illustrating the application of the hands free kit of the mobile phone of the present invention in the case of wireless hands free.

4 is a perspective view and an explanatory view of an exemplary handsfree set suitably configured of a handsfree kit of a mobile phone of the present invention.

Explanation of symbols on the main parts of the drawings

AMP: Amplifier

B: Operation Button

CT: hands free circuit

D: Sign signal detection unit

H: cell phone

HK: Hands Free Kit

J: Connection Jack

MC: microphone

SP: Speaker

PW: Power Circuit

Handsfree kit of the mobile phone of the present invention devised to achieve the above object;

In the hands-free kit of a mobile phone having a connection jack for connecting with a mobile phone, a hands-free circuit including an amplification circuit and a power rectifier circuit, an amplifier, a speaker, a microphone, an operation button, and a power supply circuit,

A sign signal detecting unit for detecting the presence or absence of a sign signal, a microcomputer for controlling operation buttons, and a driving transistor;

When the operation button is operated, the micom signal triggers a driving transistor to be used as an operation signal to the built-in micom of the mobile phone.

The handset signal detecting unit detects the handset sound of the mobile phone, and according to the presence or absence of the handset sound, the microcomputer drives the hands-free circuit and the necessary control circuit as different modes.

Another major feature of the handsfree kit of the mobile phone of the present invention is;

When the operation button of the hands-free kit is operated, the hands-free circuit is activated when the sign language detection unit detects that there is a sign language, and when the sign language is not detected, the operation button is judged to be pressed in a normal standby state. The microcomputer further includes a mode.

Another characteristic of the hands-free kit of the mobile phone of the present invention is;

When the hands-free circuit is in operation and there is no sign tone signal for a predetermined time in the sign-signal detection unit, the hands-free circuit is turned off.

The hands-free circuit is automatically switched to the hands-free mode in accordance with the change mode of the signal state of the port of the sign signal detection unit of the cellular phone,

It is also a technical aspect of the present invention that the hands free circuit can be a wireless hands free circuit.

Other features of the inventive arrangements in practical application are;

The operation button of the hands-free kit is that the operation area and size of the hands-free kit is relatively large and the visibility and operability are increased by further having luminous and light-emitting means.

This design is very useful for hands-free kits, such as wireless hands-free and necklace-type hands-free, where the mobile phone and hands-free are operated at a certain distance away from each other. It is to provide an efficient way to make.

The configuration and operation of the hands-free kit of the mobile phone of the present invention together with the accompanying drawings will be described in more detail.

1 is a circuit block diagram showing a wiring configuration in an external earphone-speaker use mode in a typical mobile phone to which a hands free kit of a mobile phone of the present invention is applied, and FIG. 2 is a schematic block diagram of a hands free kit of a mobile phone of the present invention. Fig. 3 is a block diagram illustrating the application of the hands-free kit of the mobile phone of the present invention in the case of wireless hands-free, and Fig. 4 is a suitable configuration of the hands-free kit of the mobile phone of the present invention. Appearance perspective and explanatory diagrams of an exemplary handsfree set.

FIG. 1 shows an example of the present invention, which is generally configured as a necklace shape and has a speaker and an earphone.

In the case of using the earphone (EK) by using the jack (J) of the mobile phone (H), the operation button (B) of the earphone is normally connected in parallel with the microphone (MC) and the mobile phone (H) is a microphone terminal. Is set to LOW, it is determined that the operation button B is pressed and programmed in the built-in CPU to perform the corresponding operation.

That is, when a call is received, when the operation button (B) is pressed, the user switches to the call state, or when the button is pressed in the normal state, the last caller number is displayed and the operation button (B) is pressed again while the last caller number is displayed. If it is, it means to dial the displayed number.

If the button is pressed during a call, the call ends.

As shown in Figure 1, in the case of the earphone kit (EK) configuration, all the circuit components are configured only as passive elements when the earphone is plugged into the mobile phone, there is no problem in the operation of the earphone in the call and receive through the mobile phone, etc. none.

However, in the case of the hands-free kit (HK), due to the built-in amplification circuit, a power supply circuit for operating the hands-free circuit and the circuit part incorporating the amplification circuit is needed, and current consumption may continue if the control method is inappropriate. .

In particular, when using the power of the hands free kit (HK) withdraw the battery or cell phone power, unnecessary current consumption can cause a fatal problem of shortening the talk time.

In addition, when the handsfree kit is connected through the earphone jack, the handsfree kit may not operate when the user directly makes or receives a phone call.

Therefore, the present invention is to provide a circuit for preventing such a problem is the main purpose of the hands-free kit of the mobile phone of the present invention.

2 will be described in detail the configuration and operation of the hands-free kit of the mobile phone of the present invention with reference to.

As shown in the schematic circuit diagram of FIG. 2, the hands-free kit HK includes a connection jack J for connecting to the mobile phone H, a hands-free circuit CT incorporating a conventional amplification circuit and a power rectifier circuit, and an amplifier. ), In addition to the speaker SP, the microphone MC, the operation button B, and the power supply PW;

A microcomputer (MPU) for controlling the operation of the operation button (B), a trigger transistor (TR), and a sign language signal detection unit (D) for bypassing detection of the other party's sign language are further provided.

The operation button (B) inputs an operation signal to the microcomputer (MPU). When the operation button (B) is pressed, the microcomputer (MPU) is connected to the signal terminal Pcntl connected to the base of the transistor TR for a predetermined time. The transistor 'TR' is turned ON by adding HIGH 'to keep the microphone (MC) terminal of the mobile phone H at a low time for a predetermined time, thereby operating the same as pressing the operation button B on the earphone kit EK of FIG. Let's do it.

If the user presses the operation button B while the mobile phone H is making a call (i.e. while the phone is ringing), the microcomputer makes the signal terminal Pcntl 'HIGH' for a predetermined time and the transistor TR. By operating the mobile phone (H) to the call state and at the same time the hands-free circuit (CT) and the amplifier (CT) to operate the hands-free function to enable the call.

In addition, when the user presses the operation button B of the hands free kit HK to terminate the call, the transistor TR is turned on with the signal terminal Pcntl set to 'HIGH' for a certain time to let the mobile phone enter the end button. To end the call and turn off the hands-free circuit (CT) and amplifier (AMP).

Of course, the transistor TR may be replaced with an equivalent device such as a FET or a relay if the transistor TR performs an equivalent operation, and may be directly controlled by the microcomputer (MPU).

After that, it is preferable that the microcomputer enter the 'STOP MODE' to minimize the current consumption. Exiting from 'STOP MODE' is preferably made when the operation button B of the hands free kit HK is pressed and when a sign signal is detected by the sign language detection circuit.

What has been described above may be a general circuit configuration applicable to the configuration of a general hands-free circuit.

The present invention provides a more detailed implementation method as described below.

For example, when a call is received, when the operation button B is pressed as described above, the microcomputer (MPU) sets the signal terminal Pcntl to 'HIGH' for a predetermined time, and then operates the hands free circuit (CT). Let's

When the operation button B is pressed again, the signal terminal Pcntl is set to 'HIGH' for a predetermined time, and then the hands free circuit CT is turned off (that is, the toggle operation).

If the button B is operated in the standby state where no call is made, the mobile phone displays the last calling number and if the operation button B is operated once more, a call path is formed and the phone is dialed. Enter the call mode and operate the hands free circuit (CT) to activate the hands free function.

In other words, when a call is made, the call is terminated when the button is pressed twice (the hands-free function is terminated at this time), but in normal state, the hands-free circuit (CT) must also be in operation because the button is pressed. .

If the operation button (B) is pressed in the call state, the mobile phone (H) is terminated the call, so the hands free circuit (CT) does not operate. That is, in order to end a call in a normal standby state, operation of the three operation buttons B is required.

Therefore, when a call is made to the cellular phone H, whether the operation button B of the hands free kit HK is pressed or the operation button B of the hands free kit HK is pressed in the normal standby state. The primary goal of the present invention is to determine and operate the hands free properly.

The criterion for determining this is to check the port Pdet connected to the hydration signal detector D after a predetermined time (for example, after about 1 second) after the operation button B is pressed. If it is changed to LOW ', it is determined that the operation button B is pressed when a call is made, and the hands-free circuit CT is operated.

If there is no change in the signal size of the port (Pdet), it is judged that the operation button (B) is pressed in the normal standby state, and keeps only the signal terminal (Pcntl) at 'HIGH' for a predetermined time. When the second operation button (B) is input, the port (Pdet) is 'HIGH' for a predetermined time and the hands-free circuit (CT) is operated to enable hands-free communication.

When the operation button B is operated during a hands-free call, the hands-free circuit CT is turned off after a certain time 'HIGH' of the signal terminal Pcntl (the call is terminated at the mobile phone).

Another constitutive feature of the present invention is to provide a method for automatically operating the hands free circuit when making a phone call with the mobile phone H itself while the hands free kit HK is connected.

If the mobile phone is operated by pressing the button of the mobile phone while the operation button (B) of the hands-free kit is not pressed, the key (Pdet) of the hands-free kit is changed to HIGH / LOW by a sign sound. If the change (the sign signal detection unit (D) is to change the sign language or key recognition sound is sent to the earphone of the mobile phone to the level that the microcomputer (MPU) can recognize),

The microcomputer (MPU) puts the hands-free circuit CT in an operating state so that hands-free calling is automatically enabled.

If the port Pdet has not changed for a predetermined time (for example, one minute), the call is terminated.

Another structural feature of the present invention is the case of the mobile phone (H),

When the other party terminates the call, the mobile phone (H) automatically enters the standby mode. In this case, the hands-free function becomes an operation state and there is a problem in that it can continuously consume the current.

If you are in a call (Pdet is a call from the other party or a key is heard from the mobile phone, the signal is continuously changed to HIGH / LOW by the handset detection circuit), and the port is continuously HIGH / LOW. To change it to

If the other party terminates the call or if the mobile phone is put on standby by ending the call with the mobile phone, the port (Pdet) remains in only one state (one of 'HIGH' and 'LOW'). Check this for a certain time (for example, about 1 minute) to determine that the call has ended, and turn off the hands-free circuit.

As described above, in order to minimize the current consumption, the microcomputer (MPU) may enter the 'STOP' mode at this time. It is preferable that the operation is resumed when the operation button B is input or when the port Pdet of the sign signal detection unit D changes to HIGH (when a call is received). .

The hands-free function operation described above is equally applicable to the wireless hands-free kit. In the case of wireless hands-free, since there is a button only in REMOTE, the operation of deciding whether to terminate communication between BASE and REMOTE after forming a BASE and a channel can be regarded as the same as determining the operation of the hands-free circuit. That is, hands-free circuit operation corresponds to communication channel formation, and hands-free circuit OFF corresponds to the end of communication between the wireless hands-free remote and the base.

Figure 4 shows an example of the configuration of the hands-free kit (H ') best implemented by the hands-free kit of the mobile phone of the present invention.

The hands-free kit H 'mounted on the dashboard of the vehicle (not shown) by the mounting arm A or the like mounts the mobile phone H and has a large single operation button (S2 in the figure).

Therefore, while driving, the user can operate all mobile phones by operating a single operation button having an interface of large area A, so that the operation button S1 of the mobile phone composed of a relatively small area a can be operated. It is possible to prevent the dispersal of attention by controlling the operation of all the mobile phones only by a variable operation touch operation of a single operation button.

More preferably, the single large-area operation button (S2) is good to accommodate the injection molding coated with luminous material or the LED in the room to increase the operation and concentration at night.

Hands-free kit of the mobile phone of the present invention is composed of a hands-free kit (HK) of various shapes and operation buttons (B) of various shapes and sizes can more clearly achieve the purpose of the present invention.

Hands-free kit of the mobile phone of the present invention as described above;

In implementing the hands-free function of the mobile phone, it detects the sign language status of the mobile phone and checks whether it is busy or not, and determines whether or not the call is terminated. In addition to minimizing, hands-free can be operated in an optimal state as a single operation button (B).

In addition, in the case of wireless hands-free, when a communication channel is formed for a call between BASE and REMOTE, current consumption is large. Therefore, proper control of the wireless hands-free is necessary.

Claims (6)

Connection jack (J) for connecting the mobile phone (H), hands-free circuit (CT), amplifier (AMP), speaker (SP), microphone (MC), operation button (B) that incorporates a conventional amplification circuit and power supply circuit, etc. In the wired and wireless hands-free kit (HK) of the mobile phone with Further comprising driving means such as a sign language signal detecting unit (D) for detecting the presence or absence of a sign signal, a microcomputer (MPU) for controlling operation of the operation button (B), a driving transistor (TR), a relay, and a FET; When the operation button (B) is operated, the microcomputer (MPU) signal triggers the drive element and uses the operating signal to the built-in microcomputer of the mobile phone, The hands-free circuit (CT) and microcomputer (MPU), control as a different mode even if the same operation button (B) is operated according to the presence or absence of a sign language by the sign signal detection unit (D) detecting the handset of the mobile phone. Hands-free kit for a mobile phone characterized by driving a circuit. According to claim 1, When the operation button (B) of the hands-free kit (HK) is operated, when the sign language detection unit (D) detects that there is a sign language, the hands-free circuit (CT) is activated, If it is not detected, the hands-free kit of the mobile phone, characterized in that the microcomputer (MPU) further comprises an operation mode that determines that the operation button (B) is pressed in the normal standby state. The hands-free kit of a mobile phone according to claim 1, wherein the hands-free circuit (CT) is turned off when the hands-free circuit (CT) is in operation and there is no sign language signal from the sign-signal detection unit (D) for a predetermined time. . The hands-free kit according to claim 1, wherein said hands-free circuit (CT) is automatically switched to hands-free mode in accordance with a change mode of a signal state of a port (Pdet) of a sign signal detection unit (D) of said cellular phone. The hands free kit according to claim 1, wherein said hands free circuit (CT) may be a wireless hands free circuit. The method according to any one of claims 1 to 4, The operation button (B) of the hands free kit (HK) has a larger operating area and size than the operation button of the mobile phone (H), and further has luminous and light-emitting means, thereby improving visibility and operability. Hands free kit of mobile phone to play.