KR20020033279A - Hands-free device for portable phones - Google Patents

Abstract

PURPOSE: A handsfree device for a cellular phone is provided to decrease the generation of a traffic accident by a handsfree conversation by automatically entering into a telephone conversation mode when ring a telephone bell over the number of uniform time and performing a telephone conversation with an object in a handsfree state. CONSTITUTION: A receiving sensitivity LED(Light Emitting Diode) senses a volume of an audio outputted through a speaker phone in case of performing a handsfree function using the speaker phone, determines an emitted number according to the sensed result, and displays the emitted number as a plurality of levels. An automatic termination controller(109) automatically enters into a telephone conversation mode when a telephone bell is rung over the number of uniform time in case that a cellular phone is called and performs the telephone conversation with an object in a handsfree state. A transmitting sensitivity LED senses a volume of an audio transmitted to the outside, determines an emitted number according the sensed result, and displays the determined number as a plurality of levels. A volume sensing unit(105) adjusts the transmitting and receiving sensitivity of the audio volume inputted and outputted through a microphone and the speaker phone.

Description

Hands-free device for portable phones {

The present invention relates to a hands-free device of a mobile phone, and more particularly, a mobile phone mounted on a car to enable a call with the other party without a user's special operation so that the user can talk freely without holding the mobile phone directly while driving. Relates to a hands free device.

Recently, with the development of information and communication, various personal mobile phones, mobile phones or cellular phones (hereinafter referred to as 'mobile phones') have emerged, which is due to the convenience of using freely regardless of place. The prevalence is spreading rapidly.

However, in general, the mobile phone has a problem caused by the user to directly operate the main body during the call, a typical problem is that the accident caused by traffic accidents while using the mobile phone while driving, causing casualties. In other words, since a mobile phone must hold a hand and make a call, if an emergency occurs while holding a steering wheel with one hand and using a mobile phone with the other hand, a traffic accident occurs because the response is slower than driving with two hands. .

In addition, another problem is that the user is exposed to harmful electromagnetic waves because the user is in direct contact with the mobile phone main body.

In order to solve these problems, a hand-free device or a hands-free device (hereinafter, referred to as a "hands-free device") in which a mobile phone body and a handset part are separated is used.

Since the hands-free device allows a driver to make a call while the mobile phone is not held by the mobile phone, the mobile phone can hold the steering wheel with only one hand as in the related art, thereby more quickly responding to an emergency.

1 is a view schematically showing a connection state of a hands-free device of a mobile phone according to the prior art.

1, reference numeral 1 denotes a control unit, 2 denotes a charge and phone hanger, 3 denotes a cigar jack plug which is fitted to a cigar jack of a vehicle, and 4 denotes a microphone. 5 represents a speaker and 6 represents a mobile phone.

In the above, the charging and phone hanger 2, the cigar jack plug 3, the microphone 4 and the speaker 5 are connected to the cables 2a, 3a, 4a and 5a and the connectors 2b, 3b, 4b and 5b, respectively. It is electrically connected to the control unit 1, the charging and phone hanger (2) and the mobile phone 6 is electrically connected by a separate cable (6a) and connectors (6b, 6c, 6d). At this time, the charging and phone hanger (2) is provided with a mounting groove (2c) for mounting the mobile phone 6, the inner surface of both side walls of the mounting groove (2c) for pressing and fixing both sides of the mobile phone (6) The fixing protrusion 7 is provided, and the release knob 8 is provided in the outer surface. The fixing protrusion 7 and the release knob 8 are elastically installed to maintain a state in which the protrusion is always elastic.

On the rear wall of the mounting groove 2c of the charging and phone hanger 2, when the mobile phone 6 is mounted, it is 'on' so that the call can be made by the microphone 4 and the speaker 5, and the mobile phone 6 is provided. When it is disconnected, the switching switch 9 is 'off' so that the mobile phone 6 itself can make a call.

When the mobile phone hands-free device configured as described above is applied to a vehicle, the control unit (1), the charging and phone hanger (2), the microphone (4), and the speaker (5) are mounted in the interior of the vehicle. Can be mounted in any position. At this time, the microphone 4 is installed close to the driver's mouth in the driver's posture, and the speaker 5 is installed at an appropriate position where the reception sound can be heard well. In addition, the charging and hanger (2) is conventionally mounted on the dash board (dash board) of the vehicle with a screw or the like.

In the related art, when the mobile phone 6 is mounted on the hands-free device, when the mobile phone 6 is inserted into the mounting groove 2c of the charging and phone hanger 2, the fixing protrusion 7 is pushed by both side walls of the mobile phone 6. The front end is elastically pressed to both sides of the mobile phone 6 to be fixed. In this state, the connector 6c of the cable 6a connected to the charging and phone hanger 2 is connected to the connector 6d of the mobile phone 6. The connection of the cellular phone 6 is completed by connecting. At this time, the changeover switch 9 is pressed on by the back of the mobile phone 6 is in a state that can be talked by the microphone 4 and the speaker (5).

On the other hand, in detaching the mobile phone 6 from the hands-free device, pressing the release knob 8, the fixing projections 7 enter both sides of the wall while being separated from both side walls of the mobile phone 6, the mobile phone 6 is released Will be able to separate the mobile phone (6).

In the state where the mobile phone 6 is detached from the charging and phone hanger 2, the call by the microphone 4 and the speaker 5 cannot be made even when the switch 6 is 'off' so that the cable 6a is connected. Only the call as the mobile phone 6 itself is possible.

However, in the conventional technology as described above, when a call comes to the mobile phone 6, the telephone rings and when the user presses a call button (not shown) provided in the mobile phone 6, the switching switch 9 is turned on. The hands-free call by the microphone 4 and the speaker 5 or the call as the cellular phone 6 itself is determined according to the on / off state.

As a result, when the user needs to press a call button (not shown) of the mobile phone 6, it is impossible to completely solve the problem that a traffic accident may occur when trying to make a call with the mobile phone while driving a car.

In addition, in the prior art, since there is no means for displaying the transmission state and the reception state during a call using the mobile phone 6, there is a problem in that inconvenience in use occurs because the magnitude of the transmission voice and the reception voice cannot be confirmed. .

The present invention has been made to solve the above problems, the object of which is to enter the call mode automatically when the phone rings a certain number of times when the call to the mobile phone by allowing the other party to talk in the hands-free state while driving The present invention provides a hands-free device for a mobile phone that enables a user to concentrate on driving to reduce a traffic accident caused by a mobile phone call.

In addition, another object of the present invention is to adjust the reception sensitivity and the transmission sensitivity of the volume during a call using a mobile phone and the user to transmit voice by displaying the transmission status and reception status through a level meter (level meter) using a plurality of LEDs To provide a hands-free device for a mobile phone that can easily check the size of the and the size of the received voice can improve the ease of use.

1 is a view schematically showing a connection state of a hands-free device of a mobile phone according to the prior art

2 is a view showing the appearance of the hands-free device of the mobile phone according to the embodiment of the present invention.

3 is a block diagram schematically showing the configuration of a hands-free device of a mobile phone according to an embodiment of the present invention.

Figure 4 is a circuit diagram showing in detail the configuration of the hands-free device of the mobile phone according to an embodiment of the present invention

<Description of Symbols for Main Parts of Drawings>

11: control unit body 12: cigar jack plug

13: microphone 14: mobile phone connector

15: connection cable 16: reception sensitivity LED

17: transmission sensitivity LED 101: jack for connection

102: mode selection switching unit 103: first amplifier

104: earphone microphone hands-free drive unit 105: volume detection unit

106: second amplifier 107: reception sensitivity display unit

108: Speakerphone 109: Auto Answer Controller

110: charging jack 111: constant voltage controller

112: pre-volt input unit 113: transmission sensitivity display unit

114: microphone 115: microphone selection switching unit

116: microphone volume amplifier 117: hands-free status display unit

According to a feature of the present invention for achieving the above object, in the hands-free device of the mobile phone which is mounted on a car or the like to be able to talk with the other party without a user's special operation so that they can talk freely without holding the mobile phone directly while driving ,

In case of performing hands-free using speakerphone, reception sensitivity display unit detects the volume of audio output through speakerphone and determines the number of LEDs to be lit according to the result, and displays it in multiple levels. When the phone rings more than a certain number of times, it automatically enters the call mode and enables you to talk with the other party in hands-free state, and an LED that detects the volume of audio input through the microphone and transmitted to the outside and lights up according to the result. It provides a hands-free device of a mobile phone configured to include a transmission sensitivity display unit for determining the number of the display at a plurality of levels, and a volume detection unit for adjusting the transmission and reception sensitivity of the audio volume input and output through the microphone and speakerphone.

At this time, according to an additional feature of the present invention, a mode selection switching unit for determining whether to perform hands-free using the earphone and the microphone or hands-free using the speakerphone, and the operation of the hands-free function determined by the mode selection switching unit It is preferably configured to further include a hands-free status display for detecting a status and displaying the result.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

2 is a view showing the appearance of the hands-free device of the mobile phone according to an embodiment of the present invention, Figure 3 is a block diagram schematically showing the configuration of the hands-free device of the mobile phone according to an embodiment of the present invention, Figure 4 is a present invention Fig. 1 is a circuit diagram showing in detail the configuration of the hands-free device of the cellular phone according to the embodiment.

First, referring to FIG. 2, reference numeral 11 denotes a control unit body, 12 denotes a cigar jack plug fitted into a cigar jack of a vehicle, 13 denotes a microphone, and 14 denotes a mobile phone. 15 represents a mobile phone connector to be connected, and 15 represents a connection cable connected to an ear microphone jack for transmitting and receiving a mobile phone.

The control unit main body 11 has a reception sensitivity LED 16 whose number is changed according to the volume of the audio received from the outside, and the volume of the audio input through the microphone 13 and transmitted to the outside. A transmission sensitivity LED 17 is attached in which the number to be lit is changed.

Meanwhile, referring to the accompanying drawings, FIGS. 3 and 4, reference numeral 101 denotes a jack for connecting a mobile phone to an earphone and a microphone, and 102 denotes whether the hands-free device of the present invention performs a handsfree using an earphone and a microphone. Or a mode selection switching unit for determining whether to perform hands-free using a speakerphone, and 103 amplifies audio to be provided to the speakerphone 108 when it is determined that the mode selection switching unit 102 performs hands-free using the speakerphone. The first amplifying unit 104 is an earphone microphone hands-free driving unit for operating the earphone and the microphone when the mode selection switching unit 102 determines that hands-free using the earphone and the microphone is performed.

In addition, reference numeral 105 denotes a volume detecting unit, which detects the volume of audio output through the speakerphone 108 when hands-free using the speakerphone 108, and detects the volume of the audio input through a microphone and transmitted to the outside. It detects the volume and prevents ringing to maximize the transmission and reception sensitivity of the mobile phone.

106 indicates a second amplifying unit which amplifies the signal amplified by the first amplifying unit 103 and provides the amplified signal to the speakerphone 108, and 107 detects the volume of audio received from the outside and lights up according to the result. Determining the number of LED to be displayed is a sensitivity display for displaying in three steps.

In addition, reference numeral 109 denotes an automatic call controller that automatically enters a call mode and allows a caller to talk to the other party in a hands-free state when a call rings over a certain number of times when a call is received by a mobile phone. 111 denotes a constant voltage controller that provides a constant voltage for charging a mobile phone through the charge-only jack 110, and 112 denotes a free voltage that receives 11V to 25V of a prevolt from an automobile battery and delivers the voltage to the constant voltage controller 111. Indicates the volt input.

In addition, reference numeral 113 denotes a transmission sensitivity display unit which detects the volume of the audio input through the microphone 114 and is transmitted to the outside and determines the number of LEDs to be lit according to the result and displays it in three stages, and 115 denotes a user. In the case of receiving a voice to be transmitted from the microphone, the microphone selection switching unit determines whether to be input from the sundeck microphone or the stand microphone, and 116 denotes a microphone volume input through the microphone selection switching unit 115. A microphone volume amplifier for amplifying is shown, and 117 indicates a hands-free status display unit which detects the operation state of the hands-free function determined by the mode selection switching unit 102 and displays the result.

Referring to the operation of the present invention having the configuration as described above are as follows.

First, a user attaches the hands-free device of the present invention to a vehicle. The control unit body 11 is mounted on a dash board of the vehicle, and the cigar jack plug 12 is a cigar jack of the vehicle. jack), the mobile phone connector 14 is connected to the mobile phone, and the connection cable 15 is connected to the ear microphone jack for transmitting and receiving the mobile phone.

Then, when the operation of the hands-free device is started, the user operates the mode selection switching unit 102 to determine whether to perform hands-free using the earphone and the microphone or hands-free using the speakerphone. In this case, when it is determined that hands-free using the speakerphone is performed, the received audio is sequentially amplified by the first amplifying unit 113 and the second amplifying unit 116 and provided to the speakerphone 108.

On the other hand, when a call comes to the mobile phone, the automatic call controller 109 determines the number of times the phone rings, and if more than a certain number of times ringing automatically enters the call mode to allow the other party to talk to the hands-free state.

While the hands-free function is performed by the above operation, the reception sensitivity display unit 107 detects the volume of the audio received from the outside, determines the number of LEDs to be lit according to the result, and displays it in three steps. In step 113, the volume of the audio input through the microphone 114 and transmitted to the outside is sensed, and the number of LEDs to be lit is determined according to the result and displayed in three steps. At this time, the volume detection unit 105 detects and adjusts the transmission and reception sensitivity of the volume to maximize the sensitivity of the mobile phone. In addition, the hands-free state display unit 117 detects the operation state of the hands-free function determined by the mode selection switching unit 102 and displays the result.

While the invention has been shown and described in connection with specific embodiments thereof, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.

As described above, the hands-free device of the cellular phone of the present invention automatically enters the call mode when a predetermined number of rings ring when a call is received by the cellular phone so that the user can concentrate on driving while driving. It is possible to reduce the occurrence of traffic accidents caused by mobile phone calls.

In addition, by displaying the transmission status and the reception status through a level meter using a plurality of LEDs during a call using a mobile phone, the user can easily check the size of the transmission voice and the reception voice, thereby improving convenience of use. It can be effected.

Claims (2)

In the hands-free device of the mobile phone mounted on a car, the user can talk to the other party without any special operation so that the user can talk freely without holding the mobile phone directly while driving. In case of performing hands-free using speakerphone, receiving sensitivity display unit detects the volume of audio output through speakerphone and determines the number of LEDs to be lit according to the result and displays them in multiple levels. When the phone rings more than a certain number of times, it automatically enters the call mode and enables you to talk with the other party in hands-free state, and an LED that detects the volume of audio input through the microphone and transmitted to the outside and lights up according to the result. A hands-free device for a mobile phone, comprising: a transmission sensitivity display unit for determining the number of the display unit and displaying a plurality of levels; and a volume detection unit for adjusting the transmission / reception sensitivity of the audio volume input and output through the microphone and the speakerphone. The apparatus of claim 1, further comprising: a mode selection switching unit configured to determine whether to perform hands-free using earphones and a microphone or hands-free using a speakerphone, and detecting an operation state of the hands-free function determined by the mode selection switching unit. Hands-free device for a mobile phone, characterized in that it further comprises a hands-free status display for displaying the result.