KR101227502B1 - method for transmitting and receiving safety driving information and apparatus for receiving a braodcasting signal - Google Patents

Abstract

The present invention relates to a safe driving information transmission and reception method and a broadcast signal receiving apparatus. In one aspect, the present invention provides a signal receiving unit for receiving a broadcast signal including safe driving information (SDI) messages and serial information of the messages; A demodulator for demodulating the broadcast signal; A decoder which decodes the demodulated broadcast signal and outputs the SDI messages and serial information of the messages; A storage unit for storing the output SDI messages and the serial information of the messages; A controller for determining whether all of the safe driving information is updated according to the serial number of the output SDI message, and controlling to display the safe driving information message when all of the safe driving information is updated; And a display unit for displaying the safe driving information under the control of the controller. According to the present invention, a safe driving information transmission and reception method and a broadcast signal receiving apparatus provide safe driving information. Even when updated, the broadcast signal receiving apparatus may provide accurate safe driving information to the user.

SDI, safe operation, TPEG, serial number

Description

Method for transmitting and receiving safety driving information and apparatus for receiving a braodcasting signal

 1 is a diagram illustrating a structure of an SDI in a TPEG message

2 is a diagram illustrating a list including a description of components of an SDI.

3A and 3B illustrate an example of decoding syntax of an SDI message frame.

4A and 4B are diagrams illustrating a location to which information can belong when serial number information is assigned to an SDI message.

5 is a block diagram showing an embodiment of a broadcast signal receiving apparatus according to the present invention;

<Explanation of symbols in the main part of the drawing>

110: signal receiver 120: demodulator

130: TPEG decoding unit 140: SDI storage unit

150 control unit 160 display unit

The present invention relates to a method for transmitting and receiving safe driving information and a broadcast signal receiving apparatus, and more particularly, to a method for transmitting and receiving safe driving information and a broadcast signal receiving apparatus for allowing a broadcast signal receiving apparatus to receive correct safe driving information. .

With the development of digital signal processing and communication technology, the practical range of digital multimedia broadcasting is increasing.

As the widespread use of automobiles increases the need for information related to roads or traffic due to the increase in vehicles in urban areas as well as in urban areas, a method of providing information related to roads and traffic using digital broadcasting is being considered. For example, the digital broadcasting can transmit the communication situation information or the safe driving information according to the additional data transmission format of the digital broadcasting, and the user can receive and use it.

The safe driving information includes information such as a speeding danger point and an accident occurrence point, and a broadcast receiver such as a driver can act in consideration of the safe driving information from a broadcast reception signal.

For example, the broadcast signal receiving apparatus may receive safe driving information including a plurality of pieces of information, and provide the user with information on a speeding danger point. The safe driving information including a plurality of pieces of information that may be added to the broadcast signal may change in time.

However, when the safe driving information is updated in the broadcast signal, the broadcast signal receiving apparatus does not know whether the safe driving information received and stored is the updated information or the information before the update. Therefore, as a result, there was a problem that the updated safe driving information and the unsafe updated driving information can be delivered to the user together.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to enable a broadcast signal receiving apparatus to receive accurate safe driving information when information transmitted in addition to the broadcast signal, in particular, safe driving information is updated. The present invention provides a method for transmitting and receiving safe driving information and an apparatus for receiving the broadcast signal.

In order to achieve the above object, the present invention comprises the steps of: generating serial number information of the messages of Safety-Driving-Information (SDI) and SDI messages according to the creation date of the SDI message; Forming broadcast data including at least one SDI message of the SDI messages and serial number information of the SDI message; And it provides a broadcast signal transmission method comprising the step of transmitting the broadcast data.

According to another aspect of the present invention, there is provided a method including receiving broadcast data including information on safety-driving-information (SDI) and serial number information of SDI messages according to a creation date of the SDI message; Decoding the broadcast data to obtain serial numbers according to the SDI messages and the SDI message; And determining whether all of the obtained SDI messages are updated according to the serial number of the SDI message, and providing the updated SDI message when all of the obtained SDI messages are updated.

The serial number of the SDI message may be included in a message management container of the broadcast data.

The serial number of the SDI message may be included in information representing the total number of SDI messages in a message management container of the broadcast data.

In another aspect, the present invention provides a signal receiving unit for receiving a broadcast signal including safe driving information (SDI) messages and serial information of the messages; A demodulator for demodulating the broadcast signal; A decoder which decodes the demodulated broadcast signal and outputs the SDI messages and serial information of the messages; A storage unit for storing the output SDI messages and the serial information of the messages; A controller for determining whether all of the safe driving information is updated according to the serial number of the output SDI message, and controlling to display the safe driving information message when all of the safe driving information is updated; And a display unit expressing the safe driving information by the control unit.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention that can specifically realize the above object will be described with reference to the accompanying drawings.

First, information that can be transmitted in addition to a broadcast signal will be described in order to facilitate understanding of the present invention. Terrestrial digital multimedia broadcasting (DMB) in digital multimedia broadcasting defines traffic and travel information (hereinafter referred to as TTI), which is referred to as TTI service hereinafter.

There are several application services in detail in the TTI service specification. The various application services cited by the TTI specification include terrestrial DMB TTI communication status information (CTT) service, terrestrial DMB TTI point of interest information service, and terrestrial DMB TTI safe operation information. (SDI) service, terrestrial DMB TTI notice information (REI) service, terrestrial DMB TTI news information (NWS) service, and terrestrial DMB TTI traffic status image information (TSI) service.

When using the TTI service, the user can use the terrestrial DMB network to provide communication status information, point of interest information, safe driving information, notice information, news information, and road image information based on the current location of the user or the point of interest of the recipient. Can be received via

Among them, the TTI Safety-Driving-Information (SDI) service can provide information for safe driving such as speeding danger points and accident occurrence points.

Hereinafter, the safe driving information that can be transmitted in addition to the broadcast signal will be described in order to easily describe the present invention. 1 is a diagram illustrating an example of a structure of a Transport Protocol Expert Group (TPEG) message and an SDI structure. Referring to Figure 1 describes the structure of the TTI safety driving information (SDI: Safety-Driving-Information (SDI)) as follows.

The TPEG message (a) related to the application service of the TPEG is multiplexed and transmitted. Each TPEG message has the same structure, which is called a TPEG message container. 1 illustrates the structure of SDI in a TPEG message.

The SDI may include a message management container a1, an SDI application event container a2, and a TTI-location container a3.

The message management container a1 may include a message identifier (MID), which is a message identifier associated with each event, a version number (VER) for distinguishing a message, a message generation time; MGT), a start time (STA) at which an event enters a state, a stop time (STO) at which an event leaves a state, and a message expiry time that may indicate when a message is lost. ) And validation (VAD) information indicating the number information of the messages included in the SDI.

The SDI event container a2 may include a version component, a point component, a classifier component and a property component of the SDI.

The TTI location container a3 represents location information of the SDI service.

FIG. 2 is a list summarizing descriptions of components of the SDI described with reference to FIG. 1.

The validity information included in the message management container means information about the total number of messages (21).

The version component included in the event container means version information of data based on date information (22).

In the point component of the event container, an identifier for a point where an SDI is located may be entered as a serial number (23).

The classifier component of the event container may include information according to the classification of the safe driving type, such as speeding and falling rocks (24).

In addition, the classifier component of the event container may include information according to the classification of facility types such as a general, a bridge, a tunnel, and the like.

The property component of the event container may include limit speed information from 0 to 255 km / h (26).

The property component of the event container may include guide point passing information indicating heading information of a vehicle passing through a guide point for guiding SDI in a range of 0 degrees to 359 degrees ( 27).

In addition, the property component of the event container may include actual point passing heading information representing vehicle heading information of the actual point through which the actual message receiver passes, ranging from 0 degrees to 359 degrees (28).

When the SDI is generated, a version of the message is set based on the generated date, and the version information may be included in a version component of the event container of the SDI. Version information set in the version item of the event container is set to the same version information in the entire SDI message. Therefore, the version information set in the version item of the event container is distinguished from the version number according to each message set in the SDI message management container set in each message unit.

In addition, the SDI including the location of the camera photographing the speeding, the location of the facility, etc., the SDI generated on the same date has the same time information in the version component.

The number of SDIs generated on the same date may be set in validation information of the SDI management container.

For example, if you created 7000 SDIs on May 20, 2006, the version items for the 7000 SDIs can have time information, meaning the creation date 2006/05/20, and validate the SDI management container. ) Information may have a value of 7000.

As such, the SDI message may be updated over time. That is, since the location of the camera, the facility, etc. photographing the speeding may vary with time, the SDI message may be updated with time.

In this case, the SDI message may be transmitted by setting version information based on a date when the SDI is updated in a version component of the SDI.

When the broadcast signal receiving apparatus receives the SDI message, some SDI messages may have an updated version, and some SDI messages may have an unupdated version. Therefore, in this case, since the broadcast signal receiving apparatus may transmit the safe driving information based on some un-updated SDI message, the broadcast signal receiving apparatus may transmit wrong information to the user.

3A and 3B illustrate examples of decoding syntax of an SDI message frame for explaining an embodiment of a method for transmitting and receiving safe driving information according to the present invention. An embodiment of a method for transmitting and receiving safe driving information will be described with reference to FIGS. 3A and 3B.

First, the syntax <SDI_message>: = that defines an SDI message is determined by the message ID (mid) 31, the version number (ver) 32, the length of the message 33, and the message component selector. Message-related information 34a to 34h.

The message-related information is based on the value of the message component selector 34, message generation time 34a, start time 34b, end time 34c, message valid time 34d, validity information 34e, and first unspecified. It may have a region 34f, a second unspecified region 34g, and an SDI component 34h.

According to an embodiment of the method for transmitting safe driving information according to the present invention, the serial number of the SDI message and the total number of SDI messages may be set in the validity information 34e.

The validation information is 4 bytes of information defined as interger unsignedlong (<intunlo>) that can contain the total number of SDI messages.

The validity information is information large enough to indicate the total number of SDI messages. In the example of FIG. 3A, information indicating the serial number of the SDI message and information indicating the total number of SDI messages may be set in part of the information. ;

<validation_t>: =

<intunli> (id); Serial number of the SDI message (0 to total-1)

<intunli> (total); Total number of SDI messages

The syntax of FIG. 3A is an example of defining a serial number by using validation information. The serial number information of the SDI message and the total number information of the SDI message are each two bytes of interger unsignedlittle (<intunli>). An example is defined as

When the broadcast signal is transmitted, serial numbers of SDI messages and the total number of the SDI messages may be set according to the protocol of broadcast data in which SDI is defined as in the example of FIG. 3A, and the set broadcast data may be transmitted.

As shown in FIG. 3A, when the total number of SDI messages and the serial number of each message are transmitted to the SDI message and the SDI message is transmitted, the broadcast signal receiving apparatus may determine the total number of SDI messages according to the serial number of the SDI message. In addition, the broadcast signal reception apparatus may provide the SDI message to the user only when all the SDI messages corresponding to the total number are updated.

3B illustrates an example of defining a serial number of an SDI message in an unspecified area of an SDI message management container. The serial number of the SDI message may be defined in the unspecified areas 34f and 34g.

In this case, since the total number of SDI messages is defined in the validity information, it is preferable to define only information indicating the serial number of the SDI message in the unspecified areas 34f and 34g;

If (selector = xx1xxxxx) <intunlo>; Serial number of the SDI message

3B shows an example in which the serial number information of the SDI message is defined in the first unspecified area 34f in size of 4 bytes defined as interger unsignedlong (<intunlo>).

Therefore, it is possible to determine whether to update all SDI messages according to the serial number of the SDI message when receiving a broadcast signal.

4A and 4B are diagrams illustrating a location to which information can belong when serial number information is assigned to each SDI message.

As illustrated in the syntax of FIG. 3A, FIG. 4A may include SDI message serial number information in validity information of an SDI message management container. In addition, as illustrated in FIG. 3B, the SDI message management container may be located in an unspecified area.

Meanwhile, as shown in FIG. 4B, the SDI message serial number information may be defined as a separate component in the event container.

5 is a block diagram showing an embodiment of a broadcast signal receiving apparatus according to the present invention. An embodiment of the broadcast signal receiving apparatus according to the present invention includes a signal receiver 110, a demodulator 120, a TPEG decoder 130, an SDI storage unit 140, a controller 150 and a display unit 160. It may include.

Referring to FIG. 5, an operation of an embodiment of a broadcast signal receiving apparatus according to the present invention will be described.

The signal receiver 110 may receive a broadcast signal including the serial number of the SDI message. The demodulator 120 may demodulate and output the received broadcast signal according to a modulation method of the broadcast signal.

The TPEG decoding unit 130 decodes the broadcast signal including the SDI message among the broadcast signals according to the transmission protocol TPEG, and identifies the SDI message, the identifier (MID) of the SDI message, the version information (VER) of the SDI message, and the The total number of SDIs and the serial numbers of the SDI messages can be obtained.

The SDI storage unit 140 may store the SDI message according to the identifier of the SDI message and the SDI version information.

The controller 150 may know whether the SDI message is updated according to the identifier MID of the SDI message and the SDI version information VER. Therefore, the controller 150 may store the SDI message before the update and the SDI message after the update of the SDI message in the SDI storage unit 140 for the SDI message output by the TPEG decoder 130, respectively.

The controller 150 may know the total number of SDI messages of the same version from the validity information, and may also know the serial number of the SDI message included in the broadcast signal and transmitted.

When providing the SDI message to the user, the controller 150 determines whether all the SDI messages have been updated from the total number of SDI messages and the serial number information of the SDI message, and only if all the SDI messages have been updated, the updated SDI message has been updated. You can make the message appear.

The display unit 160 may display SDI information or output an audible signal according to a control command of the controller 150.

In addition, the present invention has been described based on terrestrial DMB, but the present invention is based on Eureka-147 [ETSI EN 300 401], European Digital Audio Broadcasting (DAB), DVB-T (Digital Video Broadcasting-Terrestrial), and DVB-H ( It can be applied to traffic information such as Digital Video Broadcasting-Handheld, MediaFLO (Forward Link Only) in USA, and Digital Multimedia Broadcasting (DMB) in Korea.

According to the present invention, the user may be provided with safe driving information by the updated SDI message. In addition, the broadcast signal receiving apparatus may solve the problem of delivering incorrect safe driving information based on some updated SDI message before all the SDI messages are transmitted.

It is easy for a person skilled in the art to change or modify the present invention from the present specification. Therefore, although an embodiment of the present invention has been described above clearly, various modifications thereof should be made without departing from the spirit and the scope of the present invention.

 Referring to the effects of the safe driving information transmission and reception method and the broadcast signal receiving apparatus according to the present invention described above are as follows. According to the safe driving information transmission and reception method and the broadcast signal receiving apparatus according to the present invention, even when safe driving information is updated, the broadcast signal receiving apparatus can provide accurate safe driving information to the user.

Claims (10)

Generating serial number information of SDI messages according to SDI messages and safety-driving-information (SDI) messages; Forming broadcast data including at least one SDI message of the SDI messages and serial number information of the SDI message; And Transmitting the broadcast data; The serial number information of the SDI message is included in a message management container or an event container of the broadcast data. delete The method of claim 1, And the serial number information of the SDI message is included in the information representing the total number of SDI messages in the message management container when the serial number information of the SDI message is included in the message management container. delete Receiving broadcast data including safety-driving-information (SDI) messages and serial number information of SDI messages according to a creation date of the SDI message; Decoding the broadcast data to obtain SDI messages and a serial number according to the SDI message; And Determining whether all of the obtained SDI messages are updated according to a serial number of the SDI message, and if all are updated, providing the updated SDI message. The serial number information of the SDI message is included in a message management container or an event container of the broadcast data. 6. The method of claim 5, If the serial number information of the SDI message is included in the message management container of the broadcast data, the broadcast signal receiving method, characterized in that included in the information indicating the total number of SDI messages in the message management container. delete A signal receiver for receiving a broadcast signal including messages of safety-driving-information (SDI) and serial number information of the SDI messages; A demodulator for demodulating the broadcast signal; A decoder for decoding the demodulated broadcast signal and outputting the SDI messages and serial number information of the SDI messages; A storage unit which stores the output SDI messages and serial number information of the SDI messages; A control unit which determines whether all of the SDIs are updated according to the serial number of the output SDI message, and controls to display the SDI message when all of the SDIs are updated; And And an expression unit which expresses the SDI by the control unit. The serial number information of the SDI message is included in a message management container or an event container of the broadcast data. 9. The method of claim 8, And the serial number information of the SDI message is included in the information representing the total number of SDI messages in the message management container when the serial number information of the SDI message is included in the message management container. delete

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