KR20070025769A - Restricting method of watching digital multimedia broadcasting as driving - Google Patents

Abstract

A method for restricting DMB viewing while driving is provided to stop the output of video data and output only audio data whenever it is sensed that a vehicle moves at predetermined speed, thereby removing a hazard caused by viewing a broadcast program while an owner driver is driving. A method for restricting DMB(Digital Multimedia Broadcasting) viewing while driving comprises the following steps of: measuring the moving speed of a vehicle while performing a DMB service mode(305,320); comparing the measured moving speed with broadcast viewing restriction speed(325); and outputting only audio data according to the DMB service mode whenever the measured moving speed exceeds the broadcast viewing restriction speed(330).

Description

How to restrict watching digital multimedia broadcasts while driving {RESTRICTING METHOD OF WATCHING DIGITAL MULTIMEDIA BROADCASTING AS DRIVING}

1 is an internal block diagram of a digital multimedia broadcasting terminal according to an embodiment of the present invention;

2A is a view for explaining a broadcast limit function when driving in a digital multimedia broadcasting terminal according to an embodiment of the present invention;

FIG. 2B is a view for explaining a broadcast restriction function when selecting a self viewing mode in FIG. 2A;

3 is a view for explaining a broadcast limiting function when driving in a digital multimedia broadcasting terminal according to another embodiment of the present invention;

The present invention relates to a method of restricting viewing of digital multimedia broadcasting, and more particularly, to a method of restricting viewing of digital multimedia broadcasting during driving that can impede safe driving.

With the development of information and communication technology, changes in life styles, and economic growth, the form of communication culture is rapidly transformed.In the age of information, the demand for high-speed information delivery is not limited to time and place. Mobile communication systems that can receive communication services in marine and 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 digital multimedia broadcasting (DMB) service, which enables users to watch broadcasting on the go, is increasing. The digital multimedia broadcasting service allows a user to watch not only a mobile communication terminal such as a mobile phone but also a terminal mounted in a built-in format in a vehicle.

Accordingly, a driver driving a vehicle such as a bus or a passenger car can easily watch the broadcast anytime and anywhere through a terminal capable of digital multimedia broadcasting mounted on the vehicle. However, when the vehicle is standing on the road due to traffic jams, it is not a problem for the driver to watch the broadcast. However, there may be a case where the driver is watching the broadcast forcibly while watching the broadcast while forgetting that the driver is driving while speeding up. Therefore, when a driver in a state of driving a vehicle watches a broadcast while driving, a problem may occur in safe driving.

As described above, watching a broadcast while driving decreases concentration on driving as in the case of using a mobile phone while driving, and thus, a driver watching a broadcast at the same time as a driving may lead to a large accident such as crossing the center line. have.

Accordingly, the present invention provides a method for restricting viewing of digital multimedia broadcasting during driving that may impair safe driving.

According to an aspect of the present invention, there is provided a method for limiting viewing of a digital multimedia broadcasting while driving a vehicle, the method comprising: measuring a moving speed of a vehicle while performing the digital multimedia broadcasting service mode; And comparing the speed with each other and outputting only audio data according to the digital multimedia broadcasting service mode whenever the measured movement speed exceeds the broadcast viewing speed limit.

In addition, the present invention provides a method for restricting viewing of a digital multimedia broadcasting while driving a vehicle, wherein the driver selects whether to set his or her own viewing mode before driving the digital multimedia broadcasting service mode, and when the own viewing mode is set, Detecting whether there is a vehicle movement exceeding the broadcasting viewing speed limit while performing the digital multimedia broadcasting service mode; And stopping the output.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The present invention implements a function for restricting viewing of digital multimedia broadcasting while driving. To this end, the present invention is configured to detect whether there is vehicle movement while performing the digital multimedia broadcasting mode, and stop outputting video data and output only audio data when the vehicle moving speed is higher than a predetermined speed. In this case, when a vehicle moving above a certain speed is detected, the terminal performing the digital multimedia broadcasting mode generates a warning sound and displays a message to the driver asking whether the driver is driving the vehicle. Stop. As such, whenever the vehicle movement of a certain speed or more is detected, the output of the video data is stopped and only the audio data is output, thereby eliminating the risk of watching the broadcast when the driver is driving.

Components and operations of the digital multimedia broadcasting terminal in which such a function is implemented will be described with reference to FIG. 1. 1 is a block diagram illustrating an internal block diagram of a digital multimedia broadcasting terminal providing a broadcasting viewing restriction function while driving according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the digital broadcast data receiver 110 receives digital broadcast data (hereinafter, referred to as broadcast data) through an antenna, demultiplexes a transport stream packet (hereinafter, referred to as a TS packet), and then decodes the same. Made as a Packetized Elementary Stream (PES) packet. That is, the digital broadcast data receiver 110 parses broadcast data into video and audio data. In this case, the demultiplexer and the decoder which perform demultiplexing may be implemented in the digital broadcast data receiver 110, and operations in the respective components implemented internally are obvious to those skilled in the art, so the detailed description thereof will be omitted. do. Meanwhile, when the broadcast data received by the digital broadcast data receiver 110 is parsed into video and audio data by a transmitter (not shown) of an external digital broadcast system, the parsed video and audio data is transmitted by the multimedia unit 140. Is passed to. The multimedia unit 140 functions as a control unit in the DMB service mode, and outputs the transmitted video and audio data to the display unit 130 and the audio processor 150.

The display unit 130 receives and displays the display data of the key input data input from the key input unit 160 under the control of the controller 170, or visually knows the state in setting or driving a function required by the user. To help. In addition, the display unit 130 displays a digital multimedia broadcasting (DMB) service under the control of the controller 170. In addition, when a vehicle movement above the broadcast viewing speed limit is detected under the control of the controller 170 according to an embodiment of the present disclosure, a user mode setting function is provided through the display 130 to limit the viewing of the broadcast according to the safe driving. do. 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. As such, when a selection indicating that the driver is watching the user is input through the message displayed on the display unit 130, the control unit 170 switches to the self viewing mode. Accordingly, the DMB service displayed on the display unit 130 is stopped. That is, when the vehicle moving speed is more than a certain speed, the screen output is stopped.

Meanwhile, according to another exemplary embodiment of the present disclosure, the display unit 130 may provide a function of setting a user mode in advance when the driver wants to watch a broadcast before starting the driving. Accordingly, the user can set whether he or she will watch before starting driving. Therefore, when the self-viewing mode is set in advance, the screen output may be stopped whenever the DMB service screen is output through the display unit 130 or more than a predetermined speed. As such, the user mode setting may be performed while watching a broadcast while driving, or may be set in advance before starting driving.

The audio processor 150 is connected to the microphone MIC and the speaker SPK, converts the audio signal transmitted from the multimedia unit 140, outputs the audio signal through the speaker SPK, and receives the audio from the microphone MIC. The signal is converted into data and transmitted to the multimedia unit 140. The audio processor 150 to which the present invention is applied outputs an audio signal according to an audio channel reception under the control of the controller 170.

The key input unit 160 outputs its own key input data according to the input of each key provided as a device for interfacing with the user, and the key input data output from the key input unit 160 is applied to the controller 170. 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 170 performs a corresponding operation.

The memory 180 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 memory 180 stores information changed according to user settings, such as user mode setting information, under the control of the controller 170.

The controller 170 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. In addition, the controller 170 receives a signal from the speed measuring unit 190 that detects the movement speed according to the movement of the vehicle. If the detection signal according to the movement of the vehicle is applied, before the multimedia unit 140 outputs the video and audio data to the display unit 130 and the audio processor 150, the controller 170 moves the current vehicle through the applied signal. Know your speed. Then, when the vehicle moving speed is greater than or equal to the predetermined speed, the controller 170 controls the operations of the corresponding components according to the broadcast viewing restriction function such as stopping the output through the display unit 130 to limit the viewing of the broadcast while driving. .

At this time, the controller 170 continuously detects the vehicle moving speed through the speed measuring unit 190, and thereby stops output through the display unit 130 whenever a vehicle movement of a predetermined speed or more is detected. In other words, when the current vehicle movement speed does not exceed the predetermined speed but exceeds the predetermined speed, the controller 170 outputs video data through the display 130 and stops it. Then, when the current vehicle movement speed falls within a predetermined speed, the controller 170 controls the output of the video data through the display unit 130 to resume.

In addition, the speed measuring unit 190 measures a moving speed of the vehicle to determine whether there is a movement of the vehicle while watching a broadcast. In the exemplary embodiment of the present invention, various speed measuring methods, such as an acceleration sensor attached to the vehicle, GPS, camera motion detection, and a navigation system, may be used to measure the speed.

For example, the navigation system has a positioning device for measuring the moving speed of the vehicle, the positioning device may be divided into a form for determining the position with the help of the outside and a form for determining the position using the sensor inside. . A representative example of the former may be a Global Positioning System (GPS), and a representative example of the latter may include 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. Accordingly, a terminal capable of providing a DMB service mounted in a vehicle may receive a speed measurement value through transmission / reception of a radio signal in association with a navigation system and a DR system.

As described above, according to the embodiment of the present invention, it is preferable that all the methods capable of measuring the speed can be applied in addition to the above-described method.

Hereinafter, a process for providing a broadcast viewing restriction function when driving in the digital multimedia broadcasting terminal configured as described above will be described with reference to FIGS. 2A to 2B. FIG. 2A is a diagram illustrating a broadcast limiting function when driving in a digital multimedia broadcasting terminal according to an embodiment of the present invention, and FIG. 2B is a diagram illustrating a broadcast limiting function when selecting a viewing mode in FIG. 2A.

First, a brief description of the broadcast restriction function according to an embodiment of the present invention.

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 selects that he is watching, the terminal sets the user mode to his viewing mode. Accordingly, whenever a vehicle movement of a certain speed or more is detected, output of video data among video data and audio data according to the DMB service is stopped. 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. It outputs only audio data whenever a vehicle movement above a certain speed is detected, unless the user releases his current viewing mode.

In the meantime, when the driver sets the viewing mode to others while a message asking whether the driver is watching is displayed initially, the video and audio data according to the DMB service are normally output through the display unit 130 and the speaker. In other words, when selecting a viewing mode for another person, the terminal considers that someone other than the driver is watching the broadcast and maintains the output of the video data even when a vehicle movement of a certain speed or more is detected.

Referring to FIG. 2A, the control unit 170 determines whether there is a DMB viewing request in step 200. 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 160. If the DMB viewing request is input as a result of the determination, the controller 170 performs the DMB receiving function in step 205. In operation 210, the controller 170 outputs video and audio data obtained by performing the reception function. In detail, the broadcast data received through the digital broadcast data receiver 110 is parsed into video and audio data and transmitted to the multimedia unit 140. Then, the audio data among the data transmitted to the multimedia unit 140 is output to the speaker through the audio processor 150 under the control of the controller 170, and the video data is displayed on the display unit 130.

As such, while outputting audio and video data through the speaker and the display unit 180, the controller 170 detects the movement of the vehicle using the speed measurer 190. If the vehicle movement is detected, the control unit 170 proceeds to step 220 and measures the moving speed of the moving object, that is, the vehicle, through the speed measuring unit 190. When the speed according to the movement of the vehicle is detected through the speed measuring unit 190, the speed is measured and transmitted to the controller 170, and the controller 170 proceeds to step 230 and the measured movement speed is greater than or equal to the predetermined broadcast viewing speed limit. Determine whether or not. Here, the broadcast viewing speed limit is preferably a speed that does not interfere with safe driving. Subsequently, when the determination result is greater than or equal to the predetermined broadcast viewing speed limit, the control unit 170 proceeds to step 235 and displays a message asking whether the driver is watching or not through the display unit 130. If there is a selection that the user is watching, the controller 170 sets the user mode to the self-viewing mode, and sets the user mode to the other-viewing mode if there is a selection that the user is not watching.

Therefore, the controller 170 determines whether the self-viewing mode is selected from the two modes in step 240 based on the user's selection information. If the other viewing mode is selected instead of the self viewing mode, the controller 170 outputs audio and video data in step 245. That is, it performs a function of continuously outputting audio and video data according to the DMB service.

In contrast, when the self-viewing mode is selected, the process proceeds to step 250 of FIG. 2B. In FIG. 2A and FIG. 2B, symbol A is used to indicate that steps 240 and 250 are connected.

If the user viewing mode is selected by controlling the multimedia unit 140, the controller 170 stops outputting video data according to the DMB service in step 250 and outputs only audio data. Accordingly, the output of the screen on which the broadcast was displayed is stopped and the driver can listen to the broadcast instead. In this state, the control unit 170 proceeds to step 255 and continuously measures the vehicle moving speed through the speed measuring unit 190. As a result of performing such an operation, the controller 170 determines whether the movement speed measured in step 260 is greater than or equal to a predetermined speed. If the determination result is more than the predetermined speed, the control unit 170 returns to step 250 and outputs only audio data. That is, only output of audio data through the speaker is maintained. On the other hand, when the measured moving speed is less than or equal to the predetermined speed, that is, when the vehicle is running slowly, there is no significant effect on the safe driving. Therefore, the controller 170 proceeds to step 265 to resume output of the video data to display the display unit 130. ) To display the DMB service.

In this state, the controller 170 determines whether the user viewing mode release is input by the user in step 270. If the user viewing mode is released by the user, the controller 170 proceeds to step 275 and outputs audio and video data according to the DMB service. To this end, the controller 170 controls the corresponding components to output the corresponding data through the speaker and the display 130. On the other hand, unless the self-viewing mode is released, the control unit 170 returns to step 255 and continuously measures the moving speed and performs the above-described process repeatedly such as performing an operation according to the measurement.

As described above, in one embodiment of the present invention, the output through the display unit 130 is stopped whenever a vehicle movement over a predetermined speed is detected. In other words, when the current vehicle movement speed does not exceed the predetermined speed but exceeds the predetermined speed, the controller 170 outputs video data through the display 130 and stops it. Then, when the current vehicle movement speed falls within a predetermined speed, the controller 170 controls the output of the video data through the display unit 130 to resume.

In this way, even if the self-viewing mode is set, the user can watch the broadcast as long as the speed is not exceeded when the driver stops on the road or repeatedly drives slowly and stops due to the traffic congestion. 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, referring to FIG. 3 to describe a broadcast limiting function when driving in a digital multimedia broadcasting terminal according to another embodiment of the present invention.

Referring to FIG. 3, the controller 170 determines whether there is a DMB viewing request in step 300. If the DMB viewing request is input as a result of the determination, the controller 170 performs the DMB receiving function in step 305. Subsequently, the controller 170 displays a message on the display 130 in the form of a popup window asking the multimedia unit 140 to set its own viewing mode before outputting audio and video data. Based on the user's selection information, the control unit 170 determines whether the self-viewing mode is selected in step 315, and if the self-viewing mode is selected, the control unit 170 proceeds to step 320 by using the speed measuring unit 190. Measure the moving speed of the vehicle. The measurement result controller 170 determines whether the movement speed measured in step 325 is greater than or equal to a predetermined speed. If the speed is greater than or equal to the predetermined speed, the controller 170 proceeds to step 330 so that only audio data, which has been parsed from broadcast data into video and audio data, is output to the speaker through the audio processor 150.

In this state, the controller 170 determines whether the user viewing mode is released by the user in step 335, and when the user viewing mode is released, the control unit 170 proceeds to step 340 to output audio data to the speaker through the audio processor 150. The video data is displayed on the display unit 130. That is, when the self-viewing mode is released, the output of video data is canceled and output is resumed. Unlike this, unless the self-viewing mode is released, the controller 170 returns to step 320 and repeatedly performs the same process as described above. Accordingly, when the vehicle viewing mode is set, the controller 170 stops output of the video data whenever a vehicle movement of a certain speed or more is detected, and when the measured movement speed becomes lower than or equal to the predetermined speed, the video through the display unit 130 is performed. Control the output of data to be resumed.

 In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

According to the present invention described above, the method of automatically controlling the broadcast by detecting the movement of the vehicle only by the simple elements and functions, it is possible to eliminate the risk factors of the driver watching the broadcast when driving. In addition, if the change in the moving speed of the vehicle is used, there is an effect that can be applied to control other devices.

Claims (9)

In a method for restricting viewing of digital multimedia broadcasting while driving a vehicle, Measuring a moving speed of the vehicle during the digital multimedia broadcasting service mode; Comparing the measured moving speed with a broadcast viewing speed limit; And outputting only audio data according to the digital multimedia broadcasting service mode whenever the measured moving speed exceeds the broadcast viewing speed limit. The method of claim 1, Displaying a message asking whether the driver is watching when the measured moving speed exceeds the broadcast viewing speed limit; If it is determined that the user is watching through the message, the method further comprising the step of stopping only video data output while maintaining audio data output according to the digital multimedia broadcasting service mode. The method of claim 1, Measuring the vehicle moving speed in a state where only audio data according to the digital multimedia broadcasting service mode is output; And if the measured moving speed is less than the broadcast viewing speed limit, resuming output of video data according to the digital multimedia broadcasting service mode. The method of claim 1, If it is determined that the other person is watching through the message, the method further comprising maintaining audio and video data output according to the digital multimedia broadcasting service mode. The method of claim 1, wherein the moving speed of the vehicle is measured. And a speed measuring method of any one of an acceleration sensor, a GPS, a camera motion detection, and a navigation system attached to the vehicle. In a method for restricting viewing of digital multimedia broadcasting while driving a vehicle, Before the driving of the digital multimedia broadcasting service mode, the driver selecting whether to set his or her viewing mode, Detecting whether there is a vehicle movement exceeding a broadcast viewing speed limit while performing the digital multimedia broadcasting service mode when the self viewing mode is set; And stopping the video data output while maintaining the audio data output according to the digital multimedia broadcasting service mode when the vehicle movement above the broadcast viewing speed limit is detected. The method of claim 6, Measuring the vehicle moving speed in a state where only audio data according to the digital multimedia broadcasting service mode is output; And if the measured moving speed is less than the broadcast viewing speed limit, resuming output of video data according to the digital multimedia broadcasting service mode. The method of claim 6, Whenever a vehicle movement exceeding the broadcasting viewing speed is detected, the audio data and the video data according to the digital multimedia broadcasting service mode are output, but the audio data according to the digital multimedia broadcasting service mode is maintained and only the video data output is stopped. Further comprising a process. The method of claim 6, wherein the detection of the movement of the vehicle And a speed measuring method of any one of an acceleration sensor, a GPS, a camera motion detection, and a navigation system attached to the vehicle.

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