KR200229983Y1 - A hands free kit set for mobile phone - Google Patents

Abstract

The connector 101 is electrically connected to the mobile telephone to send and receive signals, and is fixed to the front end of the cable 103. The control means 110 controls reception and transmission signals, and the control means 110. And at the same time the volume switch VR of the control means 110 is installed on the top, the hands-free kit 120 formed with a plurality of through holes 124 to output the sound of the built-in speaker 122 and the It is installed on the rear surface of the hands-free kit 120 and clamped to position at a specific position on the clothes, and the support member 126 integrally formed on the upper side of the hands-free kit 120 toward the top. It is fixedly installed, characterized in that it has a microphone 132 for converting the user's voice into an electrical signal.

Therefore, the present invention can be fixed by using a clamper on the user's top, so that the microphone and speaker are always near the user, so that the sensitivity of the call can be kept constant at all times. It can be used very easily without disturbing the operation, and it can prevent the exposure of electromagnetic waves during the call, and it can be connected to the mobile phone integrally by the connector, so there is no fear of losing the mobile phone. There is no fear that the phone will fall and be damaged.

Description

Hands-free kit device for mobile phone {A HANDS FREE KIT SET FOR MOBILE PHONE}

The present invention relates to a hands-free kit device for a mobile phone, and in particular, when receiving a call made through a mobile phone (commonly referred to as a hand phone), the user can receive a call without using a hand. The present invention relates to a hands-free kit device for a mobile telephone which can reduce the exposure of electromagnetic waves during a call.

As a hands-free kit device which has been widely used in the related art, a hands-free kit device disclosed in Utility Model Publication on July 15, 2000 and applied for utility model registration on December 29, 1998 (Publication No. 2000-13925). There is).

The hands-free kit apparatus disclosed in the publication is a display unit 14 for displaying an earpiece 12 and a telephone state light outputting a reception sound on the terminal body 10 as shown in detail in FIGS. 1 and 2. Is provided, and the connection cover 30 which receives the telephone sound output through the earpiece 12 and outputs it through the speaker 52 already installed in the vehicle through the cable 50 is the terminal. It is attached to the main body 10.

The connecting cover 30 includes a transparent panel 34 made of a transparent material so that the display unit 14 can be seen, and the connecting cover 30 receives a sound output from the earpiece 12. The holder 36 is elastically formed integrally on three surfaces to be mounted in close contact with the built-in microphone 32 and the terminal body 10.

In the conventional hands-free kit device configured as described above, when the terminal body 10 is to be used hands-free, the connecting cover 30 is inserted into the terminal body 10, and the sound output through the earpiece 12 is built-in. Received at microphone 32.

The sound received by the built-in microphone 32 is amplified by an amplifier (not shown) and output from the speaker 52 through the cable 50.

However, in the conventional hands-free kit device configured as described above, a magnet is attached to the rear side of the terminal fixing device (not shown) in order to attach it to a specific position in the vehicle, so that when a certain impact force is applied to the vehicle, the terminal is separated from the fixing device. Not only that there is a risk of damage, but the microphone installed in the conventional hands-free kit device is a high-performance microphone, but if the distance is about 30-40 meters, there is a problem that the call sensitivity is reduced and the call is disturbed. There were various problems such as use only within.

Accordingly, the present invention has been made to solve the various problems described above, and an object of the present invention is to provide a hands-free kit device for a mobile phone, which does not have a risk of damage to a terminal and can always maintain constant call sensitivity.

Another object of the present invention is to provide a hands-free kit device for a mobile phone that can be inserted and used near the opening of a pocket.

Another object of the present invention is to provide a hands-free kit device for a mobile phone which can prevent exposure of electromagnetic waves during a call.

In order to achieve the above object, a hands-free kit device for a mobile phone according to the present invention is electrically connected to a mobile phone (not shown) for transmitting and receiving a signal, and a connector fixed to the front end of the cable, and for controlling reception and transmission signals. A control unit, a volume switch of the control unit at the same time that accommodates the control unit, and a hands free kit having a plurality of through holes formed to output the sound of the built-in speaker to the outside, and on the back of the hands free kit It is provided with a clamper which is installed and fixed at a specific position on the suit, and a microphone which is fixedly installed upward to the support member formed integrally on one side upper part of the hands-free kit to convert the user's voice into an electrical signal. It features.

1 is a perspective view schematically showing a conventional hands-free kit device,

Figure 2 is a rear perspective view schematically showing a connection cover of the hands-free kit device shown in Figure 1,

3 is a perspective view schematically showing a hands-free kit device for a mobile phone according to one embodiment of the present invention;

4 is a right side view of FIG. 3;

5 is a block diagram of control means installed in the hands-free kit of FIG.

<Explanation of symbols for the main parts of the drawings>

110: control means 111: microprocessor

112: first amplifier 113: second amplifier

114: differential amplifier 115: audio amplifier

116: echo sound removing unit 118: oscillator

120: Hands-free kit 122: Speaker

124: through hole 126: support member

132: Mike 135: clamper

Hereinafter, a hands-free kit device for a mobile phone according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view schematically illustrating a hands-free kit device for a mobile phone according to an embodiment of the present invention, FIG. 4 is a right side view of FIG. 3, and FIG. 5 is a control means installed in the hands-free kit of FIG. 3. Is a block diagram of.

3 to 5, the hands-free kit device for a mobile phone according to the present invention is electrically connected to a mobile phone (also referred to as a mobile phone terminal) not shown to transmit and receive a signal, and the cable 103 The connector 101 is fixed to the front end of the control unit, the control means 110 for controlling incoming and outgoing signals, and the volume switch VR of the control means 110 is accommodated at the same time. Installed on the rear surface of the hands-free kit 120 and the hands-free kit 120 formed with a plurality of through holes 124 to output the sound of the built-in speaker 122 to the outside. A microphone 132 fixedly installed upward and fixed to an upper portion of the clamper 135 for fixing the position and a support member 126 integrally formed on an upper portion of one side of the hands-free kit 120 to convert the user's voice into an electrical signal. With) There.

The control unit 110 receives the received data (RXD) from the mobile phone and determines whether it matches the protocol stored therein, and if it matches, the microprocessor that maintains the available state and at the same time controls the entire operation. And a bias signal output from the mobile telephone to stand-by the microprocessor 111 when it is determined by the microprocessor 111 that the protocol matches. -ON) amplifies the audio signal input from the microphone 132 when the telephone is connected to the transistor Q1 which is connected through the bias resistor R1 and is connected to the other party, and outputs it to the mobile telephone. The first and second amplifiers 112 and 113, a differential amplifier 114 for differentially amplifying a voice signal of the other party at a predetermined level during a call, and amplifying the differential amplifier 114 A volume switch VR for adjusting the volume of the received signal, and an audio amplifier 115 for receiving an audio signal whose volume is adjusted by the volume switch VR and amplifying the audio to a predetermined level so as to output audio through the speaker 122; To echo the voice signal output from the speaker 122 input to the microphone 132 to the ground so that the voice of the other party output through the speaker 122 is not input to the microphone 132 at the time of a call. The sound removing unit 116 and a light emitting diode (LED) emitting light to indicate that a call is in progress.

The echo sound removing unit 116 receives a call signal (relative voice signal) output from the differential amplifier 114 and blocks the DC component from the first coupling capacitor C1 and the first coupling capacitor C1. The amplification transistor Q2 receives and amplifies the audio signal (AC component) passing through the bias terminals R2 and R3 at the base terminal, and blocks the DC component among the voice call signals amplified by the amplifying transistor Q2. And a second coupling capacitor C2 for passing the AC component, full-wave rectifiers D1 and D2 for full-wave rectifying the signal of the AC component passing through the second coupling capacitor C2, and the full-wave rectifier D1. And the smoothing capacitor C3 for smoothing the full-wave rectified signal at D2 and the smoothing capacitor C3 at the base terminal through bias resistors R6 and R7, and being switched on. Input the audio signal output from the microphone 132 O consists of a first amplifier switching transistor (Q3) for bypassing the signal amplified to a predetermined level at 112, to ground via a resistor (R8).

In FIG. 5, reference numeral 118 denotes an oscillator.

Next, the operation and effect of the hands-free kit device for a mobile phone according to the embodiment of the present invention configured as described above will be described.

First, a mobile phone not showing the connector 101 connected to the cable 103 at the bottom of the hands-free kit 120 in which a plurality of through holes 124 are formed to output the sound of the built-in speaker 122 to the outside. Is electrically connected to the connector, and is inserted into the upper left pocket or the front edge of the suit by Erina on the jacket using the clamper 135.

Next, when the power on / off switch of the mobile phone is switched on, a bias signal (power-on signal) output from the mobile phone through terminal ② of the connector 101 turns off the resistor R1. A power on (P-ON) signal is applied to the microprocessor 111 by being applied to the base terminal of the transistor Q1 to conduct the transistor Q1, thereby providing a hands-free kit device for a mobile phone and the mobile phone of the present invention. The standby state is entered.

At this time, since the hand-free kit device for a mobile telephone of the present invention and the mobile telephone are electrically connected by the connector 101, a + 5V DC power is supplied from the mobile telephone through the ① terminal of the connector 101. At the same time, the receive data RXD (Receive Data) is input to the microprocessor 111 through the ⑤ terminal of the connector 101, and the microprocessor 111 that receives the receive data RXD is input to the microprocessor 111. Transmitter Data (TXD; Transmitter Data) is determined as the microprocessor 111 outputs a signal indicating that the protocol is the same when the protocol inputted in advance and the protocol of the received data RXD are the same. It outputs to the mobile phone through ④ terminal ④ of 101, and it becomes a state which can send and receive a signal.

In this state, when a call is connected by making a call using a mobile phone and a call is connected, the user's voice is input through the microphone 132, and the voice signal is converted into an electrical signal by the microphone 132. The voice signal TXA converted from the microphone 132 into an electrical signal is amplified by the first and second amplifiers 112 and 113 and outputs the audio output signal TXA to the mobile phone through terminal ⑥ of the connector 101. In the mobile phone, the call is sent to the other party's phone.

Then, the voice signal (RXA) sent from the other party is received at the receiving side mobile phone through the ⑧ terminal of the connector 101 in the hand pre-kit device for a mobile phone of the present invention differential amplifier 114 of the control unit 110 Differential amplification at a predetermined level, the volume is controlled by the volume switch (VR) is output to the audio amplifier 115.

The audio amplifier 115 amplifies the received signal whose volume is controlled by the volume switch VR to a predetermined level, outputs the audio signal to the speaker 122, and outputs the audio from the speaker 122.

On the other hand, the voice signal output from the speaker 122 is input to the microphone 132 and output again to the speaker 122 of the receiver, so that the echo sensitivity of the echo sound removing unit 116 to prevent the call sensitivity is reduced by the echo sound The switching transistor Q3 is turned on to bypass the voice signal component output from the speaker 122 included in the signal amplified by the first amplifier 112 to the ground through the resistor R8.

In other words, the first coupling capacitor C1 of the echo sound removing unit 116 receives the call signal (received opposite voice signal) output from the differential amplifier 114 to block the DC component to prevent the bias resistor R2. R3 is applied to the base terminal of the amplifying transistor Q2 and amplified to a predetermined level by the amplifying transistor Q2 and output to the second coupling capacitor C2. The second coupling capacitor C2 The DC component is cut out of the voice call signal amplified by the amplifying transistor Q2 and the AC component is passed.

The signal of the AC component passing through the second coupling capacitor C2 is full-wave rectified by the full-wave rectifiers D1 and D2, smoothed by the smoothing capacitor C3, and switched through the bias resistors R6 and R7 through the switching transistor Q3. By conducting), a signal output from the speaker 122, input to the microphone 132, and amplified to a predetermined level by the first amplifier 112 is bypassed to the ground through the resistor R8.

Therefore, the hands-free kit device for a mobile phone of the present invention can be fixed by using the clamper 135 on the user's top, so that the microphone and the speaker are always near the user so that the call sensitivity can be kept constant at all times. Since the phone does not need to be held by hand, the phone can be used very easily without being disturbed in operation, and the exposure of electromagnetic waves during the call can be prevented.

In addition, the present invention is coupled to the mobile phone via the connector 101, there is no fear that the mobile phone falls off from the hands-free kit device for the mobile phone.

In the above description, a light emitting diode (LED) emits light to indicate that a call is in progress when in a call.

In the above description, although illustrated and described with reference to specific embodiments, the present invention is not limited to this, for example, by those of ordinary skill in the art without departing from the concept of the present invention Of course, the design can be changed in various ways.

As described above, according to the present invention, the hands-free kit device for mobile phones can be fixed by using a clamper on the user's top, so that the microphone and the speaker are always near the user, so that the call sensitivity can be kept constant. Because you don't have to hold the mobile phone with your hand and talk on the phone, you can use it very easily without disturbing the operation. Also, you can prevent the exposure of electromagnetic waves during the call. There is no fear that the mobile phone will be lost and there is no fear that the mobile phone will fall and be damaged.

Claims (3)

The connector 101 is electrically connected to the mobile telephone to send and receive signals, and is fixed to the front end of the cable 103. The control means 110 controls reception and transmission signals, and the control means 110. And at the same time the volume switch VR of the control means 110 is installed on the top, the hands-free kit 120 formed with a plurality of through holes 124 to output the sound of the built-in speaker 122 and the It is installed on the rear surface of the hands-free kit 120 and clamped to position at a specific position on the clothes, and the support member 126 integrally formed on the upper side of the hands-free kit 120 toward the top. A hands-free kit device for a mobile phone, which is fixedly installed and has a microphone 132 for converting a user's voice into an electrical signal. According to claim 1, wherein the control means 110 receives the received data (RXD) from the mobile phone to determine whether or not match with the protocol stored therein, if the match is maintained and at the same time, the whole A bias output from the mobile telephone to stand-by the microprocessor 111 when it is determined that the protocol matches by the microprocessor 111 for controlling the operation and the microprocessor 111. Transistor Q1 receiving the signal (P-ON signal) through the bias resistor R1 and amplifying the voice signal input from the microphone 132 when the telephone is connected to the other party. First and second amplifiers 112 and 113 outputted to the mobile telephone, a differential amplifier 114 for differentially amplifying a voice signal of the other party to a predetermined level during a call; A volume switch VR for adjusting the volume of the signal amplified by the device 114 and an audio amplification to a predetermined level to receive a signal whose volume is adjusted at the volume switch VR and output the voice through the speaker 122. The audio signal output from the speaker 122 input to the microphone 132 so that the audio amplifier 115 and the other party's voice output through the speaker 122 are not input to the microphone 132 during a call. A hands-free kit device for a mobile telephone, comprising: an echo sound canceling unit (116) bypassing to ground, and a light emitting diode (LED) emitting light to indicate that a call is in progress. The first coupling capacitor C1 of claim 2, wherein the echo sound canceling unit 116 receives a call signal (relative voice signal) output from the differential amplifier 114 and cuts off a DC component. An amplifying transistor Q2 that receives and amplifies the audio signal (AC component) passing through the coupling capacitor C1 through the bias resistors R2 and R3, and the voice call amplified by the amplifying transistor Q2. A second coupling capacitor (C2) for blocking a DC component and passing an AC component in the signal, and a full-wave rectifier (D1, D2) for full-wave rectifying the signal of the AC component passing through the second coupling capacitor (C2); And switching on the smoothing capacitor C3 for smoothing the full-wave rectified signal in the full-wave rectifiers D1 and D2, and the smoothed signal in the smoothing capacitor C3 at the base terminal through bias resistors R6 and R7. The voice signal output from the speaker 122 Hands-free kit for a mobile phone, characterized in that it is composed of a switching transistor (Q3) to receive the signal received at 132 and amplified by the first amplifier 112 to a ground level through a resistor (R8) Device.