KR101308015B1 - Dual-monitor device for vehicle using ear-mic jack of mobile communication device which transceives data - Google Patents

Abstract

PURPOSE: A dual monitor apparatus for vehicle using an ear-microphone terminal of a portable terminal as a communication medium is provided to display communications and images between various devices, which are linked to information obtained from a trip controller and an I/O control board, on a general touch monitor. CONSTITUTION: An image format converter (610) converts image signals provided through an input and output (I/O) control board and a trip controller into images in a form which can be displayed on a touch display unit. A text converter (620) includes an image table corresponding to an input signal, adds or changes the analysis result of signals inputted through the I/O control board and the trip controller to a corresponding image table, and displays the image table on the touch display unit. A mirroring unit (630) mirrors the video information and other control information of an external device from a smart phone to the touch display unit. [Reference numerals] (610) Image format converter; (620) Text converter; (630) Mirroring unit

Description

DUAL MONITOR DEVICE FOR VEHICLE USING EAR-MIC JACK OF MOBILE COMMUNICATION DEVICE WHICH TRANSCEIVES DATA}

The present invention relates to a vehicular monitor device and a control method thereof, which facilitates control and drive operation of a corresponding device through communication and communication with an external digital device as well as an external electronic device, and an external electronic device. The present invention relates to a dual monitor apparatus for a vehicle using an ear microphone terminal of a portable terminal for connecting and using a separate touch panel monitor by using an audio output terminal and a microphone input terminal of a device as a data interface means.

Recently, as automobiles become more advanced, various vehicles with various advanced options have been released indoors. With these options, various conditions such as traffic conditions, road information, and guidance maps required for driving to destinations are provided. Devices that can get information are used indoors. For example, a car audio / video system (hereinafter, AV system) equipped with a device capable of watching TV or equipped with a navigation system, which is an automatic navigation system, is used.

A monitor is formed on the front panel of such an AV system, and a car audio cassette player or a compact disc player is installed inside the front panel, and the monitor is tilted by adjusting the angle by a predetermined angle to view the monitor or cassette in the cassette player. I can change a tape.

In a conventional AV system, one screen is displayed on one monitor so that a driver or a passenger seater can watch the same screen. Since only one screen is displayed, the passenger of the passenger seat cannot watch TV or DMB while driving due to the restriction of viewing TV while driving. Although it is illegal, even if it is used in its own remodeling or general DMB attached to the vehicle as used, when the driver sees the navigation when necessary, the passenger of the passenger seat can not watch the desired DMB.

The technology proposed to solve this problem is disclosed in Korea Patent Publication No. 10-2009-0008788 (name of the invention: dual view display AV system), as shown in the accompanying FIG. The system is comprised of a tuner unit 11, T-DMB unit 12, AV head unit 13, external DSP amplifier 14, keyboard 15, DVD navigation 16 and dual view system 17. . Each device is connected via an H-LAN interface.

The tuner unit 11 is mainly used for an input portion of a radio receiver and is a component for selecting only the radio wave by tuning to a frequency of a constant radio wave (or electric signal). In general, audio systems function as AM / FM broadcast receivers and TV channel selection.

The T-DMB unit 12 receives the terrestrial digital multimedia broadcast transmitted through the relay tower from the data compressed in the MPEG-4 scheme. Through the VHF band having a bandwidth of about 1.5 MHz based on the T-DMB, even a receiver traveling at 200 km / h can receive video CD quality and CD quality stereo sound quality. Terrestrial Digital Multimedia Broadcasting (TDMB) uses MPEG-4 Advanced Video Coding (AVC) video compressed data and MPEG-4 Bit-Sliced Audio (BSAC) through the stream mode defined by the European Digital Audio Broadcating (DAB) standard. Coding) After multiplexing MPEG-4 BIFS (Binary Format for Scenes) data for audio compressed data and interactive data broadcasting to MPEG-4 SL (Sync Layer) and MPEG-2 Transport Stream (TS), RS 204, 188) and the stream to which an additional error protection mechanism by convolutional stitching is applied.

The AV head unit 13 is audio mounted on a dashboard and is a device in which a radio and a tape or CD player are combined.

An external DSP signal (14) is an external digital signal amplifier (DSP) with an integrated digital signal processor (DSP).

The keyboard 15 receives control of the AV system through the user. For example, the user can operate the keyboard 15 to control the power of a car audio system, play a CD / DVD / cassette, fast forward, rewind, skip, and select a channel of a radio / DMB. In recent years, it is common to provide a remote controller for wirelessly controlling the keyboard 15 for the user's convenience.

The DVD navigation 16 is a navigation to which a DVD player function is added.

The dual view system 17 is a block composed of a conventional FRT monitor, which is an upgraded part of the public view dual view display AV system unlike the conventional AV system.

Since the above-described prior art basically uses a single monitor by using PIP technology, it displays a different heterogeneous image on one screen, which is inconvenient for the user and does not satisfy the needs of the user. A problem has occurred.

An object of the present invention for solving the above-described problems, and relates to a vehicle monitor device and a control method thereof, and in particular, to control the device easily through the control and communication with the external digital device as well as the external digital device of the vehicle And an ear microphone terminal of a mobile terminal, which enables a drive operation and at the same time uses an audio output terminal and a microphone input terminal of an external electronic device as a data interface means to connect and use a separate touch panel monitor for a vehicle. It is to provide a dual monitor device.

In order to achieve the above object, a dual monitor apparatus for a vehicle using an ear microphone terminal of a mobile terminal according to an embodiment of the present invention includes a touch display unit which displays a screen and receives a user input; An input / output control board unit having an MHL / HDMI communication unit for communicating and controlling a device mounted in a vehicle and performing HML / HDMI communication with an external smartphone; A trip control unit for communicating with and controlling the in-vehicle device; An input selector configured to select an input of at least one of the devices communicating with the trip controller and the input / output control board; Analyzing an input signal selected by the input selector, converting it into an image signal to display an image on the touch display unit, and converting a signal converted by the user's touch on the touch display unit into a control signal of the corresponding device part; And a control unit controlling the operation of each unit and controlling a control screen of each device provided to the touch display unit according to the state of the vehicle, the vehicle monitor apparatus comprising: an image signal provided through the input / output control board unit and the trip control unit And an image format converting unit for converting the images into an image that can be displayed on the touch display unit, and an image table corresponding to an input signal, wherein a signal input through the input / output control board unit and the trip control unit is input to the control unit. Mirroring the image information and other control information of the text converter and the external device with the smart phone to the user by adding or changing the result analyzed by the image table to the image imaged through the touch display unit. Is provided with a mirroring portion to; The touch display unit and the other external touch display unit may be connected through an interface unit that is wired to an ear microphone terminal of an external portable terminal such as the smart phone.

An additional feature of the dual monitor device for a vehicle using the ear microphone terminal of the portable terminal according to the present invention for achieving the above object, the interface unit is a touch of the dual tone type through the audio terminal of the ear microphone terminal A sound generator which receives a signal and generates a sound corresponding thereto; A data converter for outputting the sound generated by the sound generator as data according to a frequency shift keying (FSK) and providing the sound to the external touch display unit; A data inverse converter configured to receive data according to the FSK type generated by the external touch display and convert the data into sound; And a sound converting unit receiving the sound output from the data inverse converting unit and converting the sound into dual tone type touch signal information and transmitting the sound to the external portable terminal such as the smart phone through the microphone terminal of the ear microphone terminal. There is.

In another aspect of the dual monitor device for a vehicle using the ear microphone terminal of the portable terminal according to the present invention for achieving the above object, the data conversion unit and the data inverse conversion unit frequency shift keying (frequency shift keying) ; Converts data according to FSK into sound or vice versa, and is performed according to a frequency component or a modem carrier data component according to a fast Fourier transform (FFT) scheme. .

According to the proposed embodiment, communication and video images between various digital devices interlocked with information acquired through the trip control unit and the input / output control board unit can be displayed through a general touch type monitor, and linked devices (smartphones, pads and other information). The screen on the monitor shown in the device) can be easily and conveniently controlled and operated by touching, and at the same time, a separate touch panel monitor is connected by using the audio output terminal and the microphone input terminal of the connected device as data interface means. To use it.

1 is an exemplary configuration of a dual view display AV system according to the prior art.
2 is an exemplary view for explaining the configuration and operation of a dual monitor device for a vehicle using the ear microphone terminal of the portable terminal according to the present invention.
FIG. 3 is a block diagram of a vehicular monitor device except for a configuration connected to an ear microphone terminal of the portable terminal of FIG. 2;
4 is a block diagram of the input and output control board shown in FIG.
FIG. 5 is a block diagram illustrating a trip control unit shown in FIG. 3. FIG.
6 is a block diagram illustrating a signal converter shown in FIG. 3;
7 and 8 are exemplary signal flow diagrams for explaining the control and operation of the vehicle monitor device shown in FIG.

First of all, the technical background of the present invention will be briefly described. In recent years, as a consumer's desire is increased, various types of signals are inputted from a car to display driving distance, driving time, average speed, average fuel consumption, and outdoor temperature. Increasingly, vehicles are equipped with an information system, which is displayed using the system, which is controlled by the TRIP computer.

At this time, even a highly functional TRIP computer, the load increases as the needs of drivers or consumers (drivers other than the driver) increase gradually, and the typical consumer desire is to use various multimedia contents at the same time. When a large number of people ride in one vehicle, the reason is that each person enjoys or wants to use the content.

Furthermore, when the content that each individual wants to use is multimedia, the display provided in the vehicle is usually one due to the space problem and the cost increase in the vehicle.

In this case, the driver typically connects a smart phone or mobile communication terminal possessed for safe driving with a TRIP computer to use the hands-free function. If the smartphone or mobile communication terminal can be used as a communication medium, a separate display is used. It is conceived that it may be the same as having.

Therefore, in the present invention, since the data communication terminal of the interface terminal provided by the smartphone or the mobile communication terminal is connected to the TRIP computer, the ear microphone terminal is to be used as a communication medium.

Hereinafter, a preferred embodiment of a dual monitor device for a vehicle using an ear microphone terminal of a mobile terminal according to the present invention will be described in detail with reference to the accompanying drawings.

2 is an exemplary view for explaining the configuration and operation of the dual monitor device for a vehicle using the ear microphone terminal of the mobile terminal according to the present invention, and FIG. 3 is connected to the ear microphone terminal of the mobile terminal in FIG. 4 is a block diagram of an input / output control board unit illustrated in FIG. 3, FIG. 5 is a block diagram of a trip control unit illustrated in FIG. 3, and FIG. 3 is a block diagram illustrating a signal converter illustrated in FIG. 3, and FIGS. 7 and 8 are exemplary signal flow diagrams for describing the control and operation of the vehicle monitor apparatus illustrated in FIG. 3.

2 to 8, the touch display unit 100 displaying a screen and receiving a user input, an input / output control board unit 200 communicating with and controlling a device mounted on the vehicle, and a vehicle as shown in FIGS. A trip control unit 300 for communicating with and controlling an internal device, an input selection unit 400 for selecting an input of at least one device among the devices communicating with the trip control unit 300 and the input / output control board unit 200, and The signal storage unit 500 for storing the input signal input through the trip control unit 300 and the input / output control board unit 200 and the input signal selected by the input selection unit 400 are analyzed, and the touch display unit A signal converter 600 for converting an image signal to display an image on the display apparatus 100 and converting an input signal of a user's touch of the touch display unit 100 into a control signal of a corresponding device; To control, According to the state of the amount of a controller 700 to control the screen control of each device provided in the touch display unit 100.

In addition, the mobile terminal 10 is connected to the trip control unit 300 through a data communication terminal, and the screen connected to the external touch display unit 100A using the ear microphone terminal of the mobile terminal 10 as a communication medium. And an interface unit 900 that receives a user's touch input and transmits the same to the trip controller 300.

Accordingly, the user can check the state of all the devices in the vehicle as a video image through the vehicle dual monitor device using the ear microphone terminal of the portable terminal according to the present invention as a communication medium. The command for the operation of the device can be performed only by touching the screen, thereby improving the convenience of the user, and there is an advantage that a separate operation panel is not required for each device operation.

The touch display units 100 and 100A include an image display unit 110 that displays an image and a touch unit 120 that receives a touch input. In the present embodiment, the coordinates of each touch unit 120 and the image coordinates of the image display unit are matched 1: 1. As a result, a value corresponding to image information of an area touched by a user may be selected.

The input / output control board 200 may include a CVBS communication unit 210, an MHL / HDMI communication unit 220, an RGB communication unit 230, a DVI communication unit 240, an audio communication unit 250, a wireless communication unit 260, and a power supply unit ( 270, through which connection with an electronic device having various communication methods is possible. The CVBS communication unit 210 is for connecting to an electronic device that performs CVBS communication and includes a corresponding connector. The CVBS communication unit 210 enables not only communication with cameras (including front and rear cameras) mounted in a vehicle, but also communication with an AVM system. Through this, the image image of the outside of the vehicle can be checked, and the vehicle location or situation information can be provided to the user or the outside.

In this embodiment, each of the first CVBS communication unit for communication with the camera and the second CVBS communication unit for communication with the AVM system can be provided.

The MHL / HDMI communication unit 220 is for performing HML / HDMI communication with an external smartphone and has a corresponding connector. The MHL / HDMI communication unit 220 may communicate with a smartphone, which is an external device, and may display an image of the smartphone on the touch display through mirroring. That is, synchronization between the smart device and the touch display is possible.

The RGB communicator 230 is in charge of communicating with a device that provides image information through an RGB cable. The RGB communicator 230 may receive a DMB image or a Divx image and transmit a signal for controlling a device that provides the image.

The DVI communication unit 240 is in charge of communicating with a device that provides image information through a DVI cable.

The audio communication unit 250 is responsible for audio communication with the electronic device. The audio communication unit 250 also includes a separate audio connection connector. The audio communication unit 250 may be connected to a device providing only an audio signal or may receive an audio signal of a device connected through another communication unit.

The wireless communication unit 260 is in charge of communication with an external wireless communication device, and it is effective that the wireless communication unit 260 is configured with various modules capable of responding to various types of wireless communication. For example, communication such as Bluetooth, infrared communication, RF communication, and Wi-Fi is possible.

The power applying unit 270 supplies power to the electronic device connected to each communication unit. At this time, the power supplied is a power supply for the electronic device to provide a DC power that is the power inside the vehicle. Therefore, the power applying unit 270 preferably controls the voltage and the current of various levels to provide a power source suitable for the operating power of the device.

The trip control unit 300 includes an OBD communication unit 310, a K-Line communication unit 320, a GPIO communication unit 330, a navigation communication unit 340, a touch signal communication unit 350, an external memory communication unit 360, and a trip communication unit 370. And a diagnostic USB communication unit 380.

The OBD communication unit 310 is for communication between the internal system for the vehicle inspection and the sensor and the inspection devices, and has a corresponding connector. Through such an OBD communication unit 310 can know the abnormal state of the vehicle.

The K-line communication unit 320 may be provided with inputs of various sensors of the diagnostic apparatus and output values of actuators through can communication. The K-line communication unit 320 may be capable of communicating with the device inside the vehicle through can communication.

The GPIO communication unit 330 is for communication with an external chipset and has a corresponding connector, that is, an input / output terminal.

The navigation communication unit 340 is for communication with the navigation mounted on the vehicle, may receive information collected from the navigation, and provide a signal for navigation control. In addition, the monitor apparatus of the present exemplary embodiment may project the screen of the navigation in a mirroring form through the navigation communication unit 340. Of course, when the navigation is integrated with the AVM in the vehicle, the function of the navigation communication unit 340 may be performed by the input / output control board 200.

The touch signal communication unit 350 receives a coordinate value touched by the touch unit 120 of the touch display unit 100 mentioned above. That is, an input for generating a control signal according to a user's touch is provided. Of course, such a touch signal communication unit 350 may be built in the control unit 700 to perform the same function.

The external memory communication unit 360 is connected to an external memory (including an SD card) to store information in the corresponding memory or to read information stored in the memory.

The trip communication unit 370 communicates with a trip computer mounted in the vehicle. Through this, information related to driving of the vehicle may be provided.

The diagnostic USB communication unit 380 is for USB communication for vehicle diagnosis and a separate connection terminal is provided therefor. The vehicle self-diagnosis may be performed through the diagnosis USB communication unit 380.

Through the trap control unit 300 as described above, communication between the device inside the vehicle and information for driving and driving the vehicle and a device for checking and diagnosing may be possible.

The input selector 400 selects and transmits at least one signal from an input signal of the electronic device input through the trip controller 300 and the input / output control board unit 200. The input selector 400 provides a signal input through the trip control unit 300 or the input / output control board unit 200 to the signal converter 600 according to the selection signal of the controller 700.

Of course, the present invention is not limited thereto, and the signal input through the input / output control board unit 200 and the trip controller 300 is provided to the input selector 400 through the signal converter 600, and the input selector 400 is provided. May provide the signal converted input signal to the touch display unit 100. Only the selected input signal may be provided to the screen through the touch display unit 100.

As such, the input selector 400 transmits only the selected input signal so that a switch or a mux may be used.

The signal storage unit 500 stores a signal input through the input / output control board unit 200 and the trip controller 300, or stores an internal signal and a processing result. As the signal storage unit 500, various types of memory devices may be used.

In addition, the signal storage unit 500 may store input signals and data provided according to a user's input, and may also store data processed according to signals generated by the controller 700.

The signal converter 600 converts a signal input through the input / output control board unit 200 and the trip controller 300 into a video image form, and provides the signal to the touch display unit 100 so that the user inputs the corresponding signal in the form of an image. To check.

In this case, the signal converter 600 includes an image format converter 610, a text converter 620, and a mirroring unit 630.

The image format converter 610 converts the image signals provided through the input / output control board unit 200 and the trip control unit 300 into an image that can be displayed on the touch display unit 100. As a result, a user may receive an image provided through various image capturing devices through a single display unit.

The text converter 620 includes an image table corresponding to an input signal, and a signal (except an image signal) input through the input / output control board 200 and the trip controller 300 is analyzed by the controller 700. The result may be added or changed to the corresponding image table to be provided to the user as imaged information through the touch display unit 100.

That is, a video image corresponding to an input signal provided through the input / output control board unit 200 and the trip controller 300 is prepared and prepared in advance.

For example, in the case of sensor input, the video image includes the definition area of the value measured by the sensor, the state area of the current measurement value, the area indicating whether the sensor value is normal, the sensor control (including on / off) area, the sensor It may include a display area having a malfunction or not. Through this, when the user wants to see the sensor input, the text converter 620 and the controller 700 may display the state of the current measured value according to the input value and indicate whether the corresponding sensor value is normal. In addition, the operation of the sensor may be controlled using the state of the sensor displayed on the screen. In addition, in the case of an input signal related to driving of a vehicle, the image image may include an area indicating which information of driving information, an area displaying input current (i.e., real time) driving information, and an area for controlling information. . In this way, the user can check the driving information of the vehicle as an image and perform control related to the driving information on the corresponding image screen.

The mirroring unit 630 mirrors the image information and other control information of the external device with the smart phone 10 to the touch display unit 100. In this case, since the pixels and sizes of the screen of the smart phone 10 and the screen of the touch display unit 100 are different from each other, the screen may be prevented from falling due to the difference through the mirroring unit 630. In addition, the control signal input by the user by the touch display unit 100 through the mirroring unit 630 may be effectively transmitted to the external device. That is, when the mirroring unit 630 projects the screen of the external device image on the touch display unit 100, the positions of icons and the like according to the ratio difference between them are stored. Accordingly, when the area A of the touch display unit 100 is touched, it is possible to know which area of the external device is touched.

The control unit 700 according to the present embodiment includes the touch display unit 100, the input / output control board unit 200, the trip control unit 300, the input selector 400, the signal storage unit 500, and the signal converter 600. Control the operation.

Through this, the user can display the desired signal information (including image information) to the user in the form of an image. Through this, the user can easily acquire not only the current state of the vehicle but also the information desired by the user in the form of imaged information, and can easily operate the devices mounted inside and outside the vehicle by directly touching the image information. .

In addition, the control unit 700 according to the present exemplary embodiment may analyze signals provided through the input / output control board unit 200 and the trip control unit 300. In addition, the control unit 700 may determine whether the corresponding signal is valid according to the analyzed signal result, and accordingly, generate a separate notification and restriction signal when it is out of the valid range.

Of course, when the vehicle driving related signal and the check result signal input through the trip controller 300 are out of the reference (safety) range, this may be immediately displayed on the touch display unit 100. This allows the user to check the vehicle status in real time.

In addition, the controller 700 may control a connection with an external portable terminal such as the smart phone 10 to perform communication with the portable terminal through wired / wireless communication, and mutually receive data information including video and audio. Make sure Of course, in addition to the portable terminal, it is also possible to enable bidirectional communication with an electronic device connected through the input / output control board unit 200 and the trip controller 300.

In addition, the controller 700 may divide the display section of the touch display unit 100 into two or more sections and display images corresponding to different input signals for each section. For example, the touch display section may be divided into two sections, one of which displays a camera image mounted on a vehicle, and the other of which displays an image of a connected smartphone. In this case, the input selector 400 may transmit two input signals, and the signal converter 600 may perform signal conversion on each of the two signals.

In addition, the interface unit 900 is wired to the ear microphone terminal 910 of an external portable terminal such as a smart phone 10. Looking at the detailed configuration and operation of the ear microphone terminal 910 After receiving the dual tone type touch signal through the audio terminal 910A, a corresponding sound generated by the sound generator 920A is generated, and the corresponding sound generated by the sound generator 920A is generated at a specific frequency. Alternatively, the data is output as data according to frequency shift keying (FSK) through the data converter 930A for converting to a data format.

In this case, the data converter 930A changes the input sound into a frequency component according to a fast Fourier transform (FFT) scheme or a modem carrier data component.

The data according to the FSK type output through the data converter 930A is provided as a touch manipulation signal of the external touch display unit 100A, while the corresponding operation is performed when the user touches the external touch display unit 100A. The signal is input to the data inverse transform unit referred to by reference numeral 930B as data according to the FSK type.

At this time, the data inverse transform unit 930B receives the data according to the FSK type and changes the frequency component according to the operation of the data converter 930A, that is, the fast Fourier transform (FFT) method or the modem carrier. The data component takes the reverse action of the change and converts it into a specific sound for output.

The output of the data inverse converter 930B converts the dual tone type touch signal information through a sound converter referred to by reference number 920B, and the smart phone is connected to the microphone terminal 910B of the ear microphone terminal 910. Transmit to the external portable terminal device as shown in (10).

Accordingly, the communication between the external touch display unit 100A and the vehicle monitor device is substantially performed through the data communication between the smartphone 10 and the vehicle monitor device.

Although the technical spirit of the present invention described above has been described in detail in a preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention.

100: touch display unit 200: input and output control board unit
300: trip control unit 400: input selection unit
500: signal storage unit 600: signal conversion unit
700 control unit 900 interface unit

Claims (3)

A touch display unit which displays a screen and receives a user input; An input / output control board unit having an MHL / HDMI communication unit for communicating and controlling a device mounted in a vehicle and performing HML / HDMI communication with an external smartphone; A trip control unit for communicating with and controlling the in-vehicle device; An input selector configured to select an input of at least one of the devices communicating with the trip controller and the input / output control board; Analyzing an input signal selected by the input selector, converting it into an image signal to display an image on the touch display unit, and converting a signal converted by the user's touch on the touch display unit into a control signal of the corresponding device part; And a control unit for controlling the operation of each unit and controlling a control screen of each device provided to the touch display unit according to the state of the vehicle.
And an image format converting unit for converting image signals provided through the input / output control board unit and the trip control unit into an image that can be displayed on the touch display unit, and an image table corresponding to an input signal. The text conversion unit and the external device of the smart phone which adds or changes the result of the signal inputted through the unit and the trip control unit to the corresponding image table and provides the image information to the user through the touch display unit. A mirroring unit configured to mirror image information and other control information on the touch display unit;
Using the ear microphone terminal of the mobile terminal as a communication medium, the touch display unit and the other external touch display unit are connected to each other via a wired interface unit connected to the ear microphone terminal of the external portable terminal such as the smart phone. Car dual monitor device.
The method of claim 1,
The wired interface unit receives a dual tone type touch signal through an audio terminal of the ear microphone terminal and generates a sound corresponding thereto;
A data converter for outputting the sound generated by the sound generator as data according to a frequency shift keying (FSK) and providing the sound to the external touch display unit;
A data inverse converter configured to receive data according to the FSK type generated by the external touch display and convert the data into sound; And
And a sound converting unit which receives the sound output from the data inverse converting unit and converts the sound into dual tone type touch signal information and transmits the sound to an external portable terminal such as the smart phone through the microphone terminal of the ear microphone terminal. A dual monitor device for a vehicle using the ear microphone terminal of the portable terminal as a communication medium.
The method of claim 2,
The data converter and the data inverse converter convert data according to a frequency shift keying (FSK) into sound or vice versa, and according to a fast Fourier transform (FFT) method. A dual monitor device for a vehicle using an ear microphone terminal of a portable terminal, which is performed according to a frequency component or a modem carrier data component.

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