KR20110041907A

KR20110041907A - Method and apparatus for controlling looking and listening of broadcasting in digital multi-media broadcasting system

Info

Publication number: KR20110041907A
Application number: KR1020090098935A
Authority: KR
Inventors: 이용후; 임남주
Original assignee: 서울통신기술 주식회사
Priority date: 2009-10-16
Filing date: 2009-10-16
Publication date: 2011-04-22

Abstract

PURPOSE: A broadcast viewing limit device and a control method thereof are provided to selective limit viewing DMB broadcasting according to a current speed of a car sensed by a speed sensor which is installed in a black box connected to the DMB system and data port. CONSTITUTION: A broadcast viewing limit device(200) includes a storing unit(170), a speed sensitive unit, and a control unit(160). The storing unit stores viewing limitation warning screen data of a digital multimedia broadcast service and a standard speed value referred to the viewing limitation. The speed sensitive unit provides data line by sensing a current speed of a car according to a movement of a car installed in the black box. The control unit receives current speed through a USB interface, blocks output of a digital media broadcasting, and display viewing limit warning screen data stored in the storing unit on a display unit(130).

Description

Apparatus for restricting broadcasting viewing in a digital multimedia broadcasting system and a method of controlling the same {method and apparatus for controlling looking and listening of broadcasting in digital multi-media broadcasting system}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast viewing limiting apparatus and a control method thereof in a digital multimedia broadcasting system (hereinafter referred to as a DMB system), in particular, by a speed sensor installed in a black box when a vehicle equipped with a DMB system is operated. The present invention relates to a broadcast viewing limiting apparatus and a control method thereof in a DMB system that can selectively limit viewing of DMB broadcasting according to a detected current speed of a vehicle.

Due to the development of information and communication technology, change of life style, and economic growth, the form of communication culture is changing rapidly. Mobile communication systems that can receive communication services in mountainous areas, etc. are becoming an important communication medium indispensable in daily life.

Recently, with the development of digital broadcasting technology as well as mobile communication technology, interest in digital broadcasting services for allowing digital broadcasting to be watched on the go has increased. In general, digital broadcasting refers to a broadcasting service that provides a user with high quality, high sound quality, and higher service in place of a conventional analog broadcasting.

Among them, interest in the digital multimedia broadcasting (DMB) service, which enables users to watch broadcasting while moving, is increasing. The DMB service allows a user to watch not only a mobile communication terminal such as a mobile phone but also a terminal mounted in a vehicle.

Accordingly, a driver driving a vehicle such as a bus or a passenger car can easily watch a broadcast anytime and anywhere through the DMB terminal mounted in the vehicle.

The DMB service may be classified into a DMB dedicated terminal that performs only a DMB service, and a navigation system terminal coupled to a navigation system to allow a user to selectively receive a navigation function and a DMB service function.

However, in most cases, such a DMB dedicated terminal or a navigation terminal having a DMB function is mounted in a vehicle. In general, when the vehicle is driving at low speed due to traffic jams, even if the driver is watching DMB broadcasting, it is not a big problem for safe driving.However, when watching a DMB broadcasting while driving at high speed, it is a big problem for safe driving. Will occur. In other words, watching DMB broadcasts while driving has a great problem of human accidents when watching DMB broadcasts at the same time as driving concentration is lowered like driving a mobile phone while driving.

Accordingly, the present invention has been made to solve the above problems according to the prior art, an object of the present invention is a DMB system (including a navigation system terminal with a DMB service function) and a speed sensor in a black box mounted on a vehicle DMB enables users to selectively limit the viewing of DMB broadcasting according to the current speed of the vehicle detected by the speed sensor installed in the black box connected to the DMB system and the data port (for example, a USB port) when the vehicle is operated in conjunction with the vehicle. An apparatus and method for controlling broadcast viewing in a system are provided.

According to an aspect of the present invention for achieving the above object, the broadcast viewing restriction device in the terminal capable of digital multimedia broadcasting service interlocked with the black box, the viewing restriction warning screen data and viewing restriction criteria of the digital multimedia broadcasting service A storage unit for storing the reference speed value; A speed sensing unit installed in the black box to sense a current speed of the vehicle according to the movement of the vehicle and provide a data line; Receives the current speed of the vehicle detected by the speed sensor of the black box during the digital multimedia broadcasting service through the USB interface, and compares the reference speed value stored in the storage unit with the current speed of the received vehicle. The control unit may block the output of the digital multimedia broadcasting in service when the reference speed value is exceeded and display the parental level warning screen data stored in the storage unit on the display unit.

The speed detector in the black box may use at least one of an acceleration sensor and an inertial sensor.

The controller may display a message for selecting a driver viewing mode when the current speed of the vehicle detected by the speed sensor in the black box exceeds a reference speed value, and if the driver viewing mode is not selected, the digital multimedia broadcasting service normally. Perform

If the driver viewing mode is not selected, the controller cuts off the output of the digital multimedia broadcasting in service, displays the parental level warning screen data stored in the storage unit on the display unit, and selects the driver viewing mode on the way. In the case of normal digital multimedia services.

The controller displays a message for selecting a driver viewing mode during the initial digital multimedia service, and normally performs a digital multimedia broadcasting service when the driver viewing mode is not selected.

When the driver viewing mode is selected, the controller compares a current speed of the vehicle provided from the speed sensing unit in the black box with a reference speed value stored in the storage unit to determine a current speed of the vehicle provided from the black box. When the reference speed value is exceeded, the output of the digital multimedia broadcasting in service is cut off and the parental level warning screen data stored in the storage unit is displayed on the display unit.

When the driver viewing release mode is selected by the user while the viewing restriction warning screen is displayed, the normal digital multimedia service is performed.

According to another aspect of the present invention, a broadcast viewing restriction method in a terminal capable of digital multimedia broadcasting service interoperating with a black box including a speed sensor for detecting a current speed of a vehicle may include viewing limitation warning screen data of a digital multimedia broadcasting service. And setting a reference speed value which is a reference for viewing restriction; Detecting a current speed of the vehicle according to the movement of the vehicle from the speed sensor in the black box and providing the digital multimedia service terminal through a data line; Comparing the current speed of the vehicle provided from the black box with the set reference speed value in the digital multimedia broadcasting service to determine whether the detected current speed exceeds the reference speed value; As a result of the determination, when the detected current speed of the vehicle exceeds a set reference speed value, blocking the output of the digital multimedia broadcasting currently being serviced and displaying the parental level warning screen data stored in the storage unit. .

The speed sensor in the black box uses at least one of an acceleration sensor and an inertial sensor.

Displaying a message for selecting a driver viewing mode when a current speed of the vehicle detected by the speed sensor in the black box exceeds a reference speed value; If the driver viewing mode is not selected according to the displayed message, the method further includes performing a digital multimedia broadcasting service normally.

If the driver viewing mode is not selected, blocking output of a digital multimedia broadcasting in service and displaying viewing restriction warning screen data stored in the storage unit on a display unit; If the driver viewing release mode is selected while the viewing restriction warning screen data is being displayed, the method further includes performing a normal digital multimedia service.

Displaying a message for selecting a driver viewing mode during a digital multimedia service according to a request of an initial user; If the driver viewing mode is not selected according to the displayed message, the method further includes performing a digital multimedia broadcasting service normally.

When the driver viewing mode is selected, comparing a current speed of a vehicle provided with a data line from a black box with a preset reference speed value; As a result of the comparison, when the current speed of the vehicle provided from the black box exceeds the reference speed value, the method further includes blocking output of the digital multimedia broadcasting in service and displaying preset viewing restriction warning screen data.

If the driver viewing release mode is selected by the user while displaying the parental level warning screen, the method further includes performing a normal digital multimedia service.

According to the present invention, the speed sensor installed in the black box is interlocked between the speed sensor installed in the black box and the DMD broadcasting system to detect the moving speed of the vehicle detected by the speed sensor mounted in the black box to detect the moving speed of the vehicle. Accordingly, viewing of DMB broadcasting is selectively limited. Therefore, it is possible to prevent the safety accidents caused by watching DMB broadcasts while driving, thereby removing the risk factors for human accidents.

Hereinafter, a broadcast viewing restriction apparatus and a control method thereof in a DMB system according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of an apparatus for restricting broadcast viewing in a DMB system according to the present invention. The configuration of FIG. 1 may be a DMB terminal performing only a DMB function or a navigation terminal having a DMB function.

As shown in FIG. 1, the DMB system may be divided into a DMB terminal or a navigation box 100 to which a DMB function is added, a DMB terminal 100, and a black box 200 connected using a data line, for example, a USB port. Can be.

The DMB terminal 100 (where the DMB terminal should be understood to include a navigation terminal with a DMB function) includes the digital broadcast data receiver 110, the digital data broadcast processor 120, the display 130, and the audio processor. 140, the key input unit 150, the controller 160, the storage unit 170, and the black box 200 may include an interface unit 110 to enable data transmission and reception.

The black box may include an interface unit 220 that enables data transmission and reception with the DMB terminal 100 and a speed sensor 210 that detects a speed of the vehicle. Here, since it is determined that the other components in the black box 200 are not related to the present invention, a description of the detailed configuration will be omitted.

The digital broadcast data receiver 110 of the DMB terminal 100 receives the digital broadcast data through an antenna, demultiplexes a transport packet, and converts the packet into a packetized elementary stream (PES) packet through a decoding process. That is, the digital broadcast data receiver 110 parses video and audio data from digital broadcast data received through an antenna. In this case, the demultiplexing unit and the decoding unit for performing the demultiplexing may be implemented in the digital broadcast data receiving unit 110. Since the operation in each component implemented internally is obvious to those skilled in the art, the detailed description thereof will be omitted. .

As a result, the digital broadcast data receiver 110 separates the digital broadcast data received through the antenna into audio and video data and provides the digital broadcast data processor 120 to the digital broadcast data processor 120.

The digital broadcast data processor 120 functions as a controller in the DMB service mode, and outputs the transmitted video and audio data to the display 130 and the audio processor 140.

The display unit 130 receives and displays display data on the key input data input from the key input unit 150 under the control of the controller 160, or visually displays the state in setting or driving a function required by the user. Make sure you know. The display 130 displays digital multimedia broadcasting service data under the control of the controller 160. In addition, when the speed of the vehicle currently being moved under the control of the controller 160 is detected to be higher than a preset reference speed, that is, a preset broadcasting viewing speed limit, the vehicle is safely driven through the display 130. According to the user mode setting function to limit viewing. Here, the broadcast viewing speed limit refers to a predetermined speed that does not interfere with safe driving. Accordingly, the user displays a message in the form of a pop-up window asking whether the driver is watching on the screen where the broadcast is displayed. Here, the message displayed in the form of a popup window is a message for selecting the driver viewing mode.

As such, when the driver viewing mode in which the driver is watching the user is selected through the message displayed on the display 130, the control unit 160 switches to the driver viewing mode. Accordingly, the display of the DMB broadcast data displayed on the display 130 is blocked. That is, the screen output is blocked when the vehicle moving speed is higher than a certain speed.

Meanwhile, according to another exemplary embodiment of the present disclosure, the display 130 may provide a function for setting a user mode in advance when the driver wants to watch a broadcast before starting driving. Accordingly, the user can set whether the driver himself or another person will watch before starting driving. Therefore, when the driver viewing mode is set in advance, the screen output may be stopped whenever the DMB service screen is output through the display 130 and reaches a predetermined speed or more. As such, the user mode may be set while watching a broadcast while driving. Alternatively, the user mode may be set in advance before driving starts.

The audio processor 140 is connected to a microphone MIC and a speaker SPK, converts an audio signal transmitted from the digital broadcast data processor 120, and outputs the converted audio signal through a speaker SPK. The audio signal received from the MIC (not shown) is converted into data and transmitted to the digital broadcast data processor 120. The audio processor 140 to which the present invention is applied outputs an audio signal according to an audio channel reception under the control of the controller 160.

The key input unit 150 outputs its own key input data according to the input of each key provided as an apparatus for interfacing with the user, and the key input data output from the key input unit 150 is applied to the controller 160. As a result, it is detected that the key input data becomes the key input data according to the key input, and according to the result, the controller 160 performs a corresponding operation.

The storage unit 170 stores information related to overall functions of the digital multimedia broadcasting receiving terminal and at the same time, information related to providing a broadcast service. In addition, the storage unit 170 stores information changed according to user settings, such as user mode setting information, under the control of the controller 160.

On the other hand, the storage unit 170 is a reference speed that is compared with the current moving speed, in order to block the display of the DMB broadcast data when the moving speed of the vehicle is above a certain speed, that is, the broadcast viewing speed limit value is stored, the display when the broadcast viewing restriction Warning screen data for notifying the broadcast viewing restriction is stored in the unit 130.

The controller 160 performs processing and control for various functions including screen processing when providing a DMB service during operation as well as a general telephone call, data communication, and wireless Internet connection. Importantly, the current speed of the vehicle is detected from the speed sensor 210 of the black box 200 through the interface unit 220 of the black box and the reference speed stored in the storage unit 170. By default, if the detection speed is higher than the reference speed control to limit the viewing of DMB broadcasts.

That is, the controller 160 receives a signal that detects the movement speed according to the movement of the vehicle detected by the speed sensor 210 of the black box 200 through the interface unit 180. If the detection signal according to the movement of the vehicle is applied from the black box 200, the controller 160 before the digital broadcasting data processor 120 outputs the video and audio data to the display 130 and the audio processor 140. Detects the current vehicle moving speed through the applied signal. Then, when the vehicle moving speed is greater than or equal to a predetermined reference speed, the controller 160 performs operations of the corresponding components according to the broadcast viewing restriction function such as stopping output through the display 130 to limit the viewing of the broadcast during driving. To control.

At this time, the control unit 160 displays the current speed value of the vehicle detected by the speed sensor 210 of the black box 200, the interface unit 220 of the black box 200 and the interface unit 180 of the DMB terminal 100. ) Or continuously, or periodically request the speed of the vehicle to the black box 200 through the interface unit 180. Here, the interface between the DMD terminal 100 and the black box 200 may be interfaced through the USB port.

In this way, the current speed of the vehicle received from the black box 200 is detected, and the output through the display 130 is stopped whenever a vehicle movement of a predetermined speed or more is detected. In other words, when the current vehicle moving speed does not exceed the predetermined speed but exceeds the predetermined speed, the controller 160 outputs video data through the display 130 and stops it. Then, when the current vehicle movement speed falls within a predetermined speed, the controller 160 outputs the received DMB broadcast data to the display 130 and the audio processor 140, respectively. .

In addition, the speed sensor 210 in the black box 200 measures a moving speed of the vehicle in order to determine whether there is a moving vehicle while watching a broadcast. In the embodiment of the present invention, various speed measuring methods, such as an acceleration sensor attached to a vehicle, camera motion detection, and the like, may be used to measure the speed.

For example, a representative example of the speed sensor 210 of the black box 200 for measuring a moving speed of a vehicle may be a dead rocking (DR) using an inertial sensor.

The DR system, which consists of an inertial sensor, calculates the speed of the moving object using a gyroscope (hereinafter, referred to as a gyro) to detect the rotational motion of the moving object and an accelerometer to detect the linear motion. In particular, the speed of the vehicle can be obtained by using the speed information obtained from the acceleration measured by the accelerometer and the motion direction information measured from the gyro.

In conclusion, the broadcast viewing restriction apparatus in the digital multimedia broadcasting system according to the present invention may be divided into three embodiments.

First, when the current vehicle moving speed provided from the speed sensor 210 in the black box 200 is greater than or equal to the set reference speed, the output of the DMB broadcast data is unconditionally blocked and the broadcast viewing restriction screen is displayed.

Second, when the current vehicle movement speed provided from the speed sensor 210 in the black box 200 is greater than or equal to the set reference speed, the screen is provided to select whether the driver is in the driver viewing mode, and only when the driver viewing mode is selected. It is to block the output of DMB broadcast data.

Third, during the output of the DMB broadcast data, the user first selects the driver viewing mode, and when the driver viewing mode is selected, the current speed of the vehicle detected and provided by the speed sensor 210 in the black box 200 is provided. Accordingly, the output of the DMB broadcast data is selectively limited.

Such three embodiments will be described in detail with reference to FIGS. 2 to 4.

2 is an operation flowchart of a broadcast viewing restriction method in a digital multimedia broadcasting system according to a first embodiment of the present invention.

As shown in FIG. 2, it is first determined whether there is a DMB broadcast viewing request from a user (S101).

As a result of the determination, when there is a request for viewing the DMB broadcast from the user, the DMD broadcast data for the selected channel is received and processed to display the received broadcast data (S102), and video and audio data are output (S103). . Here, since the processing method of the DMB broadcast data is the same as the processing method of the general DMB broadcast data, detailed operation will be omitted.

Subsequently, the DMB terminal 100 receives the current speed of the vehicle detected from the speed sensor 210 of the black box 200 and presets the current speed of the vehicle detected from the speed sensor 210 of the black box 200. Compare the reference speed (S104). Here, the speed sensor is the speed sensor 180 shown in FIG. 1, and since the embodiment has been described in the description of FIG. 1, a detailed description thereof will be omitted. The sensing operation of the speed sensor is performed while the power of the terminal is turned on. To provide the sensing value continuously or periodically to the control unit 160 of FIG. 1, and does not perform the sensing operation after the output of the DMB broadcast data as described above. It should be appreciated that this is only an order to do so. In addition, the DMB terminal 100 may periodically receive and receive the current speed value of the vehicle to the black box 200, and the black box 200 and the DMB terminal 100 regardless of the request of the DMB terminal 100. The power is applied to the terminal and the driving is all initialized, and at the same time, the moving speed value of the vehicle detected by the speed sensor 210 in the black 200 may be provided to the continuous (periodic) DMB terminal 100.

In step S104, it is determined whether the current speed of the vehicle detected from the speed sensor 210 in the black box 200 is greater than or equal to the preset reference speed (S105), and if the detected vehicle speed is greater than or equal to the set reference speed, receiving The output of the DMB broadcast data is blocked, and the preset broadcast viewing restriction warning screen is displayed on the display 140 (S106).

3 is an operation flowchart of a broadcast viewing restriction method in a digital multimedia broadcasting system according to a second embodiment of the present invention.

First, a brief description of a second embodiment of the present invention shown in FIG.

When a vehicle moving above a certain speed is detected while providing the DMB service, a warning sound is generated and a message asking whether the driver is watching is displayed. If the driver chooses to watch, the terminal sets the user mode to the self-viewing mode. Accordingly, whenever the movement of the vehicle over a certain speed is detected, the output of the broadcast data according to the DMB service is blocked. In this case, both the video and audio data may be blocked, but only the output of the video data among the video data and the audio data is blocked. Audio data may be output normally. That is, when the moving speed of the vehicle is greater than or equal to a certain speed, only audio data according to the DMB service is output, so that the driver cannot listen to the broadcast but can only listen to the broadcast. The above operation is repeatedly performed whenever a vehicle movement of a certain speed or more is detected unless the user directly releases the current viewing mode.

Referring to FIG. 2, the controller 160 determines whether there is a DMB broadcast viewing request from a user (driver or passenger) (S201). That is, it is determined whether there is a predetermined key input from the user who wants to watch DMB through the key input unit 150. As a result of the determination, when the DMB broadcast viewing request is input, the DMB broadcast data for the selected broadcast channel is received from the user, and the received broadcast data is parsed into video and audio data, respectively, and processed to enable display (S202). The output unit 130 outputs the audio data to the speaker through the audio processor 140 (S203). In the second embodiment, the processing of the received broadcast data is a well-known technique and detailed description thereof will be omitted.

In this way, the audio and video data are output through the speaker and the display unit 130, that is, the DMB broadcast data is normally output, using the speed sensor 210 in the black box 200 to determine the moving speed of the vehicle. After detecting and receiving the detected current speed value of the vehicle from the DMB terminal 100 through the interface (USB), the current speed value of the received vehicle is compared with the preset reference speed value (S204). As a result, it is determined whether the detected moving speed of the vehicle is greater than or equal to the preset reference speed, that is, whether the current speed of the vehicle is greater than or equal to the predetermined broadcast viewing speed limit (S205). Here, the broadcast viewing speed limit is preferably a speed that does not interfere with safe driving.

As a result of the determination, when the moving speed of the vehicle detected by the speed sensor 210 of the black box 200 is greater than or equal to a predetermined broadcasting viewing speed limit, the display 130 displays a message asking whether the driver is watching. Display through (S206). If it is determined that the driver himself is watching, that is, whether the driver viewing mode is selected (S207), and if the driver viewing mode is not selected, the received DMB broadcasting data is continuously output normally (S208) and vice versa. When the user selects the driver viewing mode, the output of the received DMB broadcasting data is cut off, and the preset broadcasting viewing restriction warning screen is displayed on the display unit 140 (S209).

In this state, the user continuously determines whether the driver releases the driver mode, and if the driver release mode is released, the received DMB broadcast data is normally output to the display 130 (S210, S211).

On the other hand, if the current speed of the vehicle provided from the black box 200 is less than the reference speed in the state that the output of the DMB broadcast data is blocked in step S209, that is, the broadcast viewing restriction warning screen is displayed, even if the current mode is the driver viewing Even in the mode, the received DMB broadcasting data can be transmitted in a transmission mode. Even if the current vehicle speed is lower than the reference speed, even if the driver viewing mode is not released, the parental control warning screen can be continuously output. It is.

As described above, in the second embodiment of the present invention, the output through the display 130 is stopped whenever the current speed value of the vehicle provided from the black box 200 exceeds a predetermined reference speed. In other words, when the current vehicle moving speed does not exceed the predetermined speed but exceeds the predetermined speed, the controller 160 outputs video data through the display 130 and stops it. Then, when the current vehicle movement speed detected by the speed sensor 210 provided from the black box 200 is within a predetermined speed, the controller 160 controls to resume output of the video data through the display 130. do.

By doing so, even if the driver viewing mode is set, the user can watch the broadcast as long as the driver does not exceed the predetermined speed when he / she stops on the road due to traffic jam or repeatedly drives slowly and stops. In this case, instead of restricting the viewing of the broadcasting for safe driving, the broadcasting can be listened to so that the DMB service can be continuously used.

Next, a method for limiting broadcast viewing in the digital multimedia broadcasting system according to the third embodiment of the present invention will be described step by step with reference to FIG. 4.

4 is an operation flowchart of a broadcast viewing restriction method in a digital multimedia broadcasting system according to a third embodiment of the present invention.

Referring to FIG. 4, it is first determined whether there is a DMB viewing request from a user (S301). As a result of the determination, when there is a DMB viewing request, a pop-up window is displayed on the display 130 to receive a message asking whether the user receives the DMB broadcasting data for the channel selected by the user and sets the driver viewing mode before outputting the received DMB broadcasting data. In operation S303 and S304, it is determined whether the driver viewing mode is selected.

As a result of determination, when the driver viewing mode is not selected, the received DMB broadcast data is normally output to the display 130 and the audio processor 140, respectively (S309).

On the other hand, in step S304, when the driver viewing mode is selected, after the DMB terminal 100 receives the current speed of the vehicle detected by the speed sensor 210 of the black box 200 through the USB interface, the received vehicle In operation S305 and S306, it is determined whether the current speed of the video exceeds the set reference speed for limiting viewing of the broadcast.

As a result of the determination, when the current speed of the vehicle received from the black box 200 exceeds the preset reference speed, the output of the received DMB broadcast data is blocked, and the preset broadcast viewing restriction warning screen is displayed. (S307).

In this state, the user continuously determines whether the driver viewing mode is released, and when the driver viewing mode is released, the received DMB broadcast data is normally output to the display 130 (S308 and S309).

On the other hand, if the user does not select the release of the driver viewing mode in step S308 is fed back to step S305 is to continue to repeat the operation from step S305 continuously.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments but should be determined by the equivalents of the claims and the claims.

1 is a block diagram of a broadcast viewing restriction apparatus in a DMB system according to the present invention;

2 is an operational flowchart of a broadcast viewing restriction method in a digital multimedia broadcasting system according to a first embodiment of the present invention.

100: DMB terminal 200: black box

110: digital broadcast data receiving unit

120: digital broadcast data processing unit 130: display unit

140: audio processing unit 150: key input unit

160: control unit 170: storage unit

180, 220: interface unit 210: speed sensor

Claims

In the broadcast viewing restriction device in a terminal capable of digital multimedia broadcasting service interworking with a black box,

A storage unit for storing the viewing restriction warning screen data of the digital multimedia broadcasting service and a reference speed value as a reference for viewing restriction;

A speed sensing unit installed in the black box to sense a current speed of the vehicle according to the movement of the vehicle and provide a data line;

Receives the current speed of the vehicle detected by the speed sensor of the black box during the digital multimedia broadcasting service through the USB interface, and compares the reference speed value stored in the storage unit with the current speed of the received vehicle. If the exceeds the reference speed value, the output of the digital multimedia broadcasting in service is blocked, and the broadcast viewing on the terminal capable of digital multimedia broadcasting service including a control unit for displaying the viewing restriction warning screen data stored in the storage unit on the display unit Limiting device.

The method of claim 1,

Speed detection unit in the black box, broadcast viewing restriction device in a terminal capable of digital multimedia broadcasting service using at least one of an acceleration sensor and an inertial sensor.

The method of claim 1,

The controller may display a message for selecting a driver viewing mode when the current speed of the vehicle detected by the speed sensor in the black box exceeds a reference speed value, and if the driver viewing mode is not selected, the digital multimedia broadcasting service normally. Broadcast viewing restriction device in a terminal capable of performing a digital multimedia broadcasting service.

The method of claim 3,

If the driver viewing mode is not selected, the controller cuts off the output of the digital multimedia broadcasting in service, displays the parental level warning screen data stored in the storage unit on the display unit, and selects the driver viewing mode on the way. In this case, the broadcast viewing restriction device in a terminal capable of performing a digital multimedia broadcasting service that performs a normal digital multimedia service.

The method of claim 1,

The control unit,

A device for viewing a broadcast on a terminal capable of a digital multimedia broadcasting service that displays a message for selecting a driver viewing mode during an initial digital multimedia service, and normally performs a digital multimedia broadcasting service when the driver viewing mode is not selected.

The method of claim 5,

When the driver viewing mode is selected, the controller compares a current speed of the vehicle provided from the speed sensing unit in the black box with a reference speed value stored in the storage unit to determine a current speed of the vehicle provided from the black box. The apparatus of claim 1, wherein the output of the digital multimedia broadcasting in service is blocked when the reference speed value is exceeded, and the viewing restriction warning screen data stored in the storage unit is displayed on the display unit.

The method of claim 6,

The apparatus of claim 1, wherein when the driver viewing release mode is selected by the user while displaying the parental level warning screen, the digital multimedia broadcasting service is capable of performing a normal digital multimedia service.

In the broadcast viewing restriction method in a terminal capable of digital multimedia broadcasting service linked to the black box including a speed sensor for detecting the current speed of the vehicle,

Setting a parental level warning screen data of a digital multimedia broadcasting service and a reference speed value as a criterion of parental level;

Detecting a current speed of the vehicle according to the movement of the vehicle from the speed sensor in the black box and providing the digital multimedia service terminal through a data line;

Comparing the current speed of the vehicle provided from the black box with the set reference speed value in the digital multimedia broadcasting service to determine whether the detected current speed exceeds the reference speed value;

And determining that the detected current speed of the vehicle exceeds a preset reference speed value, the output of the digital multimedia broadcasting currently being serviced, and displaying the parental level warning screen data stored in the storage unit. Broadcast viewing restriction method in a terminal capable of a broadcast service.

The method of claim 8,

The speed sensor in the black box is a method of limiting the viewing of a broadcast on a terminal capable of digital multimedia broadcasting service using at least one of an acceleration sensor and an inertial sensor.

The method of claim 8,

Displaying a message for selecting a driver viewing mode when a current speed of the vehicle detected by the speed sensor in the black box exceeds a reference speed value;

And performing a digital multimedia broadcasting service normally when the driver viewing mode is not selected according to the displayed message.

The method of claim 10,

If the driver viewing mode is not selected, blocking output of a digital multimedia broadcasting in service and displaying viewing restriction warning screen data stored in the storage unit on a display unit;

And performing a normal digital multimedia service when the driver viewing release mode is selected while the viewing restriction warning screen data is being displayed.

The method of claim 8,

Displaying a message for selecting a driver viewing mode during a digital multimedia service according to a request of an initial user;

The method of claim 12, further comprising: comparing the current reference speed with a preset reference speed value provided from the black box via the data line when the driver viewing mode is selected;

As a result of the comparison, when the current speed of the vehicle provided from the black box exceeds the reference speed value, blocking the output of the digital multimedia broadcasting in service and displaying preset viewing restriction warning screen data. Broadcast viewing restriction method in a terminal capable of a broadcast service.

The method of claim 13,

And performing a normal digital multimedia service when a driver viewing release mode is selected by a user while displaying the parental control alert screen.