KR20090041008A - Providing traffic information using tpeg message - Google Patents

Abstract

Providing traffic information using TPEG message is provided to obtain information about events generated in a road in a multimedia type in case of user request. Providing traffic information using TPEG(Transport Protocol Expert Group) messages comprises: a step(S210) for receiving messaging information composed of classed structures having road traffic information; a step(S220) for determining whether messaging information includes the event information generated in the road or not; a step(S230) for determining the severity of the road state based on the event information; a step(S240) for providing bypass information in case the severity is greater than standard which is set up in advance; a step for providing traffic information related to the event by interpreting the event information; and a step(S270) for providing the information about event in a multimedia type.

Description

Providing Traffic Information Using TPEG message}

The present invention relates to providing traffic information using a TPEG message.

The navigation system understands the road network between the starting point and the ending point and provides the optimal route for various moving objects including vehicles.

To this end, the navigation system receives a navigation message transmitted by a GPS (Global Positioning System) satellite to the GPS receiver, and installs a sensor such as a gyroscope and a speed sensor on the mobile to detect the driving state of the mobile, and the GPS receiver receives the GPS. Dead-Reckoning, which uses a navigation message and a sensor's driving state detection signal detected by the navigation device, determines the current position of the moving object, matches the determined current position with the map data, and displays it on the display. It is displayed with the map.

Therefore, the users of the moving object can identify the current position of the moving object and the shortest path from the current position to the destination by using the navigation system, and plan and plan the path that the moving object will travel in advance according to the guidance of the navigation system. The road network can be used efficiently.

However, such a conventional navigation system does not consider road traffic information such as occurrence of various accidents on the road, the appearance of obstacles, or road control due to road maintenance or events, and in fact, it is the shortest road through a detour road rather than driving only the shortest distance. The user's request to arrive at the destination in time could not be met.

Accordingly, recently, traffic information is collected and provided by a server for providing traffic information, and the broadcasting station collects traffic information and configures it to meet the TPEG (Transport Protocol Expert Group) standard, and this is a digital multimedia broadcast (DMB) transmission standard. It is preparing to broadcast through digital broadcasting service.

Accordingly, the present invention is to provide a method, a terminal, and a system capable of providing traffic information using a TPEG road traffic message.

According to a method for providing traffic information according to an aspect of the present invention, a message information having a hierarchical structure including road traffic information is received and the message information relates to message management information including a message identifier and various events occurring on a road. It is determined whether the information is composed of event information for indicating traffic information and location information including a link identifier assigned to each road section to indicate a location corresponding to the event information. Then, the severity of the road situation is determined based on the event information.

Here, the detour or evacuation information may be provided when the severity is greater than or equal to a predetermined criterion.

However, when the severity is lower than a predetermined criterion, the event information may be interpreted to provide traffic information related to the event.

In addition, when the request for the detailed information of the multimedia format related to the event is input, the multimedia data providing server may be provided by requesting the detailed information of the multimedia format related to the event.

According to another aspect of the present invention, a terminal for providing traffic information includes a broadcast signal receiver for receiving message information having a hierarchical structure including road traffic information, a decoder for decoding the message information, and the message information includes a message identifier. Determining whether the message management information is composed of message management information, event information for indicating traffic information related to various events occurring on a road, and location information including a link identifier assigned to each road section to indicate a location corresponding to the event information. And a processor configured to interpret the message information, and determine a severity of a road situation based on the event information.

The terminal may further include an input unit through which a multimedia information request related to the event is input and a communication module for communicating with a multimedia data providing server, wherein the multimedia information detailed request related to the event is input through the input unit. The controller may request and receive detailed information of the multimedia format related to the event from the multimedia data providing server through the communication module.

According to another aspect of the present invention, a system for providing traffic information includes a traffic information providing server for reconstructing road traffic information into a hierarchical structure and receiving and decoding and interpreting the message information through a broadcasting station. The message information includes message management information including a message identifier, event information for indicating traffic information related to various events occurring on a road, and a link identifier assigned to each road section to indicate a location corresponding to the event information. It determines whether it is composed of one location information, and the terminal for determining the severity of the road situation based on the event information.

The method may further include a multimedia data providing server providing a multimedia object corresponding to the detailed information of the multimedia format related to the event.

Accordingly, the terminal requests the multimedia data providing server for detailed information of the multimedia format related to the event, and the multimedia data providing server transmits the multimedia object corresponding to the requested detailed information of the multimedia format to the terminal. Can be.

In addition, the terminal and the multimedia data providing server may communicate via at least one transmission medium of the Internet, Code Division Multiple Access (CDMA), or Global System for Mobile communication (GSM).

As described above, according to the present embodiments, the TPEG road traffic information is provided and, in some cases, further detailed information in a multimedia format according to the multimedia-based traffic and travel information is provided to improve road safety and smooth traffic communication. Can be secured

Hereinafter, embodiments will be described with reference to the accompanying drawings.

1 is a diagram briefly showing a traffic information providing system according to the present embodiment.

The traffic information providing system includes a network 5, a traffic information providing server 10, a broadcasting station 15, a vehicle 20, and a multimedia data providing server 30.

The network 5 is an example such as a local area network (LAN), a wide area network (WAN), a wired or wireless Internet such as Wireless Broadband Internet (WIBro), Code Devision Multiple Access (CDMA), or Global System for Mobile telecommunication (GSM). For example, it is divided into five levels and includes various wired and wireless communication networks such as mobile telecommunication networks. The traffic information providing server 10 collects various traffic information through the network 5, and the collected information is processed in a format described later in FIG. 5 and transmitted to the broadcasting station 15. Accordingly, the broadcasting station 15 inserts the processed traffic information into the broadcast signal and broadcasts it to the vehicle.

The traffic information providing server 10 receives various traffic information collected from various paths connected to the network 5, for example, operator input, wired and wireless Internet, another server, or a probe car, for example, traffic information. The service information is reconfigured into a traffic information format such as a format according to the Transport Protocol Expert Group (TPEG) standard, which is a standard for service, and transmitted to the broadcasting station 15.

The traffic information may include information on various traffic conditions necessary for road, sea and air operations such as accidents, road conditions, traffic congestion, road construction, road closures, public network delays, and flight delays.

In addition, the TPEG standard reconfigured by the server 10 according to the present embodiment includes a road traffic message application and a multimedia based traffic and travel information message application. It includes traffic information format of TPEG standard according to various applications.

The TPEG-Road Traffic Message Application is intended to provide information to road users, and the information provided is closely related to events and status information occurring on the road network and the traffic facilities that affect the use of the road. For example, when an accident occurs on a certain road section in a road network, control information on the road section may be given.

In addition, the multimedia-based traffic and travel information message application is included in the traffic information of the TPEG standard to provide detailed information on a specific event included in the road traffic message application.

Multimedia-based traffic and travel information applications can be applied to various types of TPEG terminals. That is, the present invention may be applied to a TPEG terminal based on an electronic map, a GPS TPEG terminal without an electronic map, or a mobile receiver or a fixed reception TPEG terminal without an electronic map. Multimedia-based traffic and travel information is in addition to information serviced by other applications of TPEG traffic information, to further convey detailed information in multimedia formats such as image, video and audio.

The TPEG-road traffic information application and the TPEG-multimedia based traffic and travel information application will be described in detail later.

The broadcasting station 15 receives traffic information processed from the traffic information providing server 10 so that a terminal capable of receiving traffic information, for example, a navigation device, mounted on the vehicle 20 or the like, and receives various digital broadcasting standards. It is broadcasted to the vehicle 20 on the digital signal according to the (broadcasting).

In this case, the broadcasting standards include the European Digital Audio Broadcasting (DAB) standard based on Eureka-147 [ETSI EN 300 401], terrestrial or satellite digital multimedia broadcasting (DMB), terrestrial digital video broadcasting ( It includes various digital broadcasting standards such as Digital Video Broadcasting (DVB-T) standard, Digital Video Broadcasting-Handheld (DVB-H) standard, and Media Forward Link Only (MFLO) standard.

The broadcasting station 15 may transmit the traffic information through a transparent data channel (TDC) of the digital transmission medium or transmit the data using a multimedia object transport (MOT) standard.

The vehicle 20 refers to all possible vehicles implemented using a machine or an electronic device for the purpose of moving a person or an object such as a general car, bus, train, ship, or aircraft. In the present specification, embodiments of the present invention will be described based on a terminal capable of receiving traffic information mounted on a general passenger car, but the present invention is not limited thereto.

The vehicle 20 is equipped with a traffic information receiving terminal, receives the TPEG format of the TPEG format from the broadcasting station 15 using the mounted traffic information receiving terminal, processes the received data, and graphics the processed data. Pass it to the user via text and / or audio.

The multimedia data providing server 30 stores the multimedia object as detailed information in a multimedia format corresponding to the multimedia object information provided according to the application of the multimedia-based traffic and travel information, and requests from a terminal or the like mounted on the vehicle 20 are received. If present, it is transmitted to the terminal through a communication network such as the Internet, CDMA or GSM.

2 is a block diagram showing the configuration of a terminal capable of receiving traffic information according to the present embodiment.

The terminal 100 is classified into an dash type and an on dash type according to an installation type in a vehicle. The desiccation type traffic information receiving terminal is inserted into a predetermined space allocated in a dash board of the vehicle and fixedly mounted. The on-decay type is mounted on a dashboard of a vehicle or installed near a vehicle by using a predetermined support, and thus can be detached and carried from the vehicle, thereby being referred to as a portable navigation device.

The terminal 100 according to the present example includes a vehicle information terminal of this type of ondesi and ondesi type, in addition to the GPS receiver (GPS) for receiving a navigation message received from a GPS (Global Positioning System) satellite in the vehicle It includes all information processing apparatus capable of receiving and / or processing traffic information, such as various portable terminals capable of performing a navigation function in conjunction with a module.

Referring to FIG. 2, the terminal 100 includes a GPS receiver 105, a broadcast signal receiver 110, a TPEG decoder 120, a controller 130, a processor 140, a memory 150, a display unit 160, It may include an input unit 170, a voice output unit 180, and a communication module 190.

On the other hand, it may further include a GPS receiver 105, or may be connected to a GPS receiver (not shown) installed in the vehicle 20 to perform a navigation function. The GPS receiver (not shown) receives the navigation message transmitted by the GPS satellite through the antenna (not shown) and provides it to the processor 140. Accordingly, the terminal 100 may control the driving of the vehicle 20 on which the terminal 100 is mounted based on the navigation message.

The broadcast signal receiver 110 receives a broadcast signal including a traffic information provided from the traffic information providing server 10 through an antenna ANT from a broadcaster. The broadcast signal received by the broadcast signal receiver 110 is a video according to various standards such as terrestrial or satellite digital multimedia broadcasting (DMB), digital audio broadcasting (DAB), and digital video broadcasting (DVB-T, DVB-H). And additional information such as traffic information according to a TPEG service, a BIFS (Binary Format for Scene) data service, and various additional data.

The broadcast signal receiver 110 tunes a signal band in which traffic information is provided and demodulates and outputs the tuned signal.

The TPEG decoder 120 receives the demodulated signal from the broadcast signal receiver 110 and decodes the TPEG message sequence configured as shown in FIG. 3 to be transmitted to the processor 140.

The controller 130 controls the overall operation of each component of the terminal 100.

The processor 140 performs various data processing under the control of the controller 130, and outputs the processed result to the display unit 160 or the voice output unit 180. In particular, the processor 140 according to the present embodiment interprets each TPEG message in the TPEG sequence delivered from the TPEG decoder 120, extracts various traffic information and / or control signals according to the message contents, and controls the controller 130. The extracted traffic information may be stored in the memory 150 under the control of.

 In the present embodiment, the controller 130 and the processor 140 are described as operating separately, but the controller 130 and the processor 140 control the overall operation of the terminal 100 and are input to the terminal 100. It may also be implemented as one processing unit, such as a central processing unit (CPU) for processing various data.

The memory 150 stores programs and data necessary for performing various functions provided by the terminal 100 and various data generated according to the operation of the terminal 100.

In particular, the memory 150 stores traffic information decoded by the TPEG decoder 120 and interpreted and extracted by the processor 140. The controller 130 may read out the traffic information corresponding to the route from the memory 150 to the destination or on the road network within a predetermined range so that the processor 140 may process the traffic information.

In addition, the memory 150 may store map data necessary for driving the vehicle 20 based on the GPS received navigation message. Map data may be terrain information or graphics, in addition to basic data such as road junctions such as intersections or other roads with other roads, network and link distances of linkages connecting the respective junctions. Include various geographic data, including data.

A road segment between two points on the map may consist of a set of one or more unit segments. In this case, one unit section means a road section between two neighboring branching points, hereinafter, a unit section is simply referred to as a link.

Each section in the map data is recognized by a link identifier. The section identifier may consist of letters, numbers or a mixture thereof, for example, including the latitude and longitude of the start and end points of the section, or the name of the section.

Meanwhile, when the terminal 100 fails to store the map data in the electronic map format due to the limited memory capacity, various geographical data may be stored in the memory 150 in the text format.

The controller 130 controls the GPS receiver 105 to apply the received navigation message to the processor 140 and includes various locations such as a current vehicle location, a starting point, a destination, and the like based on the navigation message interpreted accordingly. After outputting the data from the memory 150 and finding the optimal route to the destination accordingly, the display unit 160 searches the display unit 160 to select the optimal route using the traffic information extracted by the processor 140 and selects the selected route. After processing as a video signal for display and output to the display unit 160.

The display unit 160 displays the map data read from the memory 150 according to the navigation message received from the GPS receiver 105 in a graphic form under the control of the controller 130, for example, and displays the current position and traffic information of the vehicle. And a driving route of the vehicle and the like on the displayed map.

The display unit 160 is implemented as a display device such as a liquid crystal display (LDC) to display a video signal input from the controller 130. Meanwhile, the display unit 160 is implemented as a touch screen to display not only a display function but also various functions provided by the terminal 100 in a menu structure, and to a touch using a user's finger or a stylus pen. It may be implemented to simultaneously perform an input function for executing the menu selected by.

The input unit 170 receives various operation commands from the user and applies them to the controller 130. The input unit 170 may include a key input unit including at least one numeric key or a function key, a touch pad or a touch screen on which information input may be performed by a user's touch, and an operation convenience of the terminal 100. It may be implemented in the form of a remote controller that can be installed to the steering wheel in the vehicle.

The voice output unit 180 generates an audio signal for voice guidance of the selected path under the control of the controller 130, amplifies to a predetermined level selected through the input unit 170, or one or more speakers ( Output through (not shown).

The communication module 190 communicates with an external server, for example, the multimedia data providing server 30 under the control of the controller 130. In this embodiment, the communication module 190 may include a module for performing communication in at least one of CDMA, GSM, and the Internet.

3 is a diagram illustrating a format of TPEG information.

Referring to FIG. 3, the TPEG information consists of a sequence of message segments (hereinafter, referred to as a 'TPEG message').

Message segments can be applied to different applications, respectively. As an example, each TPEG message may include a TPEG-Congestion and Travel-Time information Application, a TPEG-Road Traffic Message Application, and a TPEG-Public Transport Information Application. ), Multimedia-based traffic and travel information applications (TPEG-TTI Point-Of-Interest Information service Application), or any other application. Can be applied.

Each TPEG application is assigned a unique identification number called an Application Identification (AID). The application identifier is used to decode the received TPEG message using the most suitable application decoder.

An identifier 0001 (hex) is assigned to the road traffic message application, an application identifier 0010 (hex) to the TPEG congestion traffic information application (TPEG-CTT), and an application identifier 0008 (hex) to the multimedia-based traffic and travel information application.

The TPEG message includes a message management container, an application status container, and a TPEG location container.

The application state container varies depending on the type of TPEG message application.

The TPEG location container contains location information for a link that is each road segment. The messages transmitted in the TPEG information are location dependent, and each message includes information about the location. The TPEG location reference method is defined in TPEG Part 6-Location Referencing for Applicaton, and eight location types are defined in TPEG table loc01 to distinguish the location type to transmit. Congestion and travel time information includes information on a large number of segments, so add a separate entry to the location type table because it is necessary to use the location reference field as flexibly and economically as possible. One is a location reference method using a coordinate system, and the other is a location reference method using a predefined nodelink ID.

In the case of using a coordinate system, in transmitting a longitude / latitude, a location reference indicates a section, and in this case, transmission of coordinates for a start point and an end point is essential. If necessary, names of two coordinate sections may be transmitted in a text format, and the coordinate system follows the WSG84 system.

According to a method of using a predefined node link ID, which is another location reference method, an ID is assigned to each link using a node name constituting the link.

4 illustrates TPEG information including a road traffic message application and a multimedia-based traffic and travel information application according to the present embodiment.

Referring to FIG. 4, the road traffic message 400a includes a message management container 410a, a road traffic message event container 420a, and a location container TPEG-location container 430a. It may include.

The message management container 410a of the road traffic message 400a includes a message identifier (MID), a version number (VER), a date and time component, a severity factor (SEV), and unverified information (UNV). It may include Unverified Information and Cross-Reference Information (CRI). Of these, the message identifier and version number are essential components.

In addition, the severity (SEV) of these may indicate the degree of traffic disruption due to the event, that is, how seriously an event such as a sudden situation affects the traffic. The traffic information service provider judges the confusion of traffic caused by the accident in consideration of the traffic density in the area where the accident occurs and determines the severity of the situation by classifying the severity of the situation into five levels, for example, the severity of the situation Subject to change.

Meanwhile, the RTM-event container 420a of the road traffic message 400a may include event information having a hierarchical structure. From the top level down to the lower levels, there are classes selected at higher levels to deliver message content faster, and at lower levels there are classes that describe each class at a higher level in more detail. This feature is intended to provide flexibility to service providers.

As an example of event information having a hierarchical structure having a plurality of levels as described above, when the event information to be provided is “refractive freight vehicle has been rolled over in a low speed lane”, the event information has a hierarchical structure as follows. Is coded with

Level 1 Accident (ONE)

Level 2 low speed

Level 2 Vehicle (ONE)

Level 3 Overturn

Level 3 Heavy Cargo

Level 4 articulated vehicle

Therefore, when level 1 is decoded in the hierarchical structure of event information, the terminal 100 according to the present embodiment may provide information that one accident has occurred. And, if level 2 is decoded, it can provide information that the accident is about one vehicle in a slow lane. In addition, decoding level 3 may indicate that the vehicle has been rolled over and that it is a large freight vehicle, and decoding level 4 may provide information that the vehicle is a refractive vehicle.

Accordingly, the terminal 100 may provide the user with up to a predetermined level of information according to a predetermined method in consideration of various environments such as processing capacity, and may select the amount of information to be sent from a traffic information service provider.

In addition, this hierarchical approach is particularly useful when transmitting traffic information through various transmission media having different transmission capabilities. That is, all levels of information can be delivered through a transmission medium having a large transmission capacity, and a small number of levels of information can be delivered through a low transmission medium.

As described above, the RTM-event container 420a of the road traffic message 400a defines an event according to various steps, and is represented using a sequential encoding method according to a hierarchical structure approach.

Table 1 shows the events belonging to the level 1 class, which is the highest level among the events defined in the road traffic message application.

Class Description Accident Descriptions of situations in which road users (vehicles, animals and people) do not behave in a predictable or safe manner and either impact with each other or the roadside infrastructure and in some cases may leave the road. Obstructions Descriptions of situations in which road users (vehicles, animals and people) or other causes (man-made or environmental) make it difficult or impossible for other road users to progress along that part of roadway. Activities Descriptions of events (particularly involving people) that can have an impact on the road traffic. Road conditions Descriptions of changes to the properties of the surface of the road (disruption to the surface, adhesion reduction or changes to the road markings) that may affect the progress of the road user. Network performance Descriptions of the effect on road users (delay, flow or speed) that arise out of external events. Network conditions Descriptions of changes to network conditions planned, imposed or advised by the road network operator that affect the drivers, vehicles, and routing. Facilities performance Descriptions of the changes (for any reason) to the availablitiy of control, assistance and roadside services. Moving hazard Descriptions of situations in which non-stationary road users (vehicles, animals and people) make it hazardous for others to use the road. Security alert Descriptions of situations which may have safety implications for the road user. Public transport information Descriptions of abnormal operation of all forms of public transport which may affect the road user's journey. Visibility Descriptions of changes to the normal obscurity or lighting conditions that may affect the road user's ability to see the road or other road users ahead. Weather Descriptions of weather situations that are affecting or may affect the progress of the road-user. Diversion advice Descriptions of alternative routes for advised via the service provider

Referring to Table 1, events belonging to Class 1 include Accidents, Obstructions, Activities, Road Conditions, Network Perfomance, and Network Conditions. , Facility performance / Facilities performance, Moving hazards, Security alerts, Public transport information, Visibility, Weather, Weather, Diversion advice It includes.

Accidents represent situations in which road users are unforeseen and in everyday situations, such as collisions between vehicles or physical facilities and leaving the road. Obstacles represent situations in which road users (love, vehicles, animals) or others (human or environmental problems) make it difficult to proceed on the road. Traffic activity is a description of events that may affect road traffic, and road conditions indicate road surface conditions (ex: road rupture, alteration of road marking) that affect the progress of road users.

A description of what network performance / efficiency affects road users other than events (ex: delays, traffic flows, speeds), and network conditions affect drivers, vehicles, and routes. It shows the description. Facility performance / efficiency represents signals, descriptions of changes in the use of roadside facilities, and on-the-go hazards describe situations in which other road users are restricted from using roads by vehicles, animals, and people.

The alert posture is a description of a situation that is closely related to safety for road users, and the transit information represents a description of abnormal public transport operations that will affect the road users' travel. Visibility is a description of obstacles or changes in light conditions that will affect road vision for road users; weather is a description of weather conditions that will affect road users driving; Description of route guidance.

The location container 430a of the road traffic message 400a includes location information on a link, which is a road section, and location information of a point where an event occurs.

Referring to FIG. 4, the multimedia-based traffic and travel information message 400b includes a message management container 410b, a multimedia object information container 420b, and a location container (TPEG-Location Container). , 430b).

The message management container 410b of the multimedia based traffic and travel information message 400b may include a message identifier, a version number, a date and time component, and cross reference information (CRI). The reference information refers to a reference pointer for one or several messages in the same or different TPEG service, and includes a service component identifier (SCID), a version number, and a message identifier.

The multimedia object information container 420b uses a sequential encoding method according to a hierarchical approach in defining multimedia-based traffic and travel information. This is to make it compatible with encoding and decoding protocols of other applications in addition to the main purpose of ensuring terminal compatibility according to the extension of the specification and the addition of components.

The multimedia object information container 420b includes object information, information for appropiated applications, transmission medium information, and additional information. The multimedia object information container 420b is as follows.

class Explanation Object info Object_Information Describes object property information such as execution class and format of multimedia object Information type Application_Information Describe what application the object being delivered contains information about Transmission medium information Bearer_Information Describes what media the object is on Additional Information Describe additional information about multimedia-based traffic and travel information in the form of text

The object information describes detailed information such as object property information of the delivered multimedia object. Subclasses are as follows.

ㆍ Play Type-ex) Streaming, Download

ㆍ Object Type-ex) Stills, Movies, Still Images, Voices

ㆍ Object Format (ex) jpeg

ㆍ Object Size

Compression Information

In the present embodiment, the object information includes multimedia object property information about detailed information of an event included in the road traffic message shown in FIG. 4. That is, information on whether the detailed information is transmitted in a streaming or download manner, information on which multimedia type the detailed information corresponds to still, video, still picture, or voice, the format of the detailed information, and the capacity of the detailed information. And multimedia object attribute information such as compressed information of detailed information.

5A shows the structure of an object information component. Referring to FIG. 5A, an object information component is assigned an identifier '80h', includes m state components, and has a field representing a total data length of the included object information component in bytes.

Each state component of the object information component includes components such as execution classification, object classification, object capacity, and compression information in the formats shown in FIGS. 5B to 5E.

The execution classification component is assigned an identifier '00', the object separation component is assigned an identifier '01', the object capacity component is assigned an identifier '02', and the compression information component is assigned an identifier '03'.

Referring to FIG. 5C, the object classification component includes m object format components (eg, video, audio, and image).

6A to 6C illustrate formats of an object type video component, an object type audio component, and an object type image component. 6A to 6C, an object type_video component is assigned an identifier '00', an object type_audio component is assigned an identifier '01', and an object type_image component is assigned an identifier '02'.

Information for appropiated applications describes what application the object being delivered contains. Subclasses of information types are as follows.

ㆍ Application Type

Content Description

ㆍ Billing Information

In this embodiment, the application type will correspond to the road traffic message application.

7A shows the format of an information type component.

Referring to FIG. 7A, an information type component is assigned an identifier '81 (hex) ', includes m information type components, and has a field representing the total data length of the included information type component in bytes.

7B to 7E illustrate an information type component, a collector component, a contents description component, and a billing information component format, respectively.

7B to 7E, an identifier '00' is assigned to an information type component, an identifier '01' to a collector component, an identifier '02' to a content description component, and an identifier '03' to a charging information component.

Bearer Information describes information on which medium an object is located in. Subclasses are as follows.

Broadcasting Network

ㆍ Telecommunication Network

8A shows the structure of a transmission medium component. An identifier '82h' is assigned to a transport information component, includes m transport media components, and has a field representing a total data length of the included transport media component in bytes.

The transmission medium component carries information such as DMB, Internet, CDMA, GSM, etc. in the format shown in Figs. 8B to 8E.

The DMB component is assigned an identifier '00' and includes an extended country code, an ensemble identifier, frequency information, and the like.

The Internet component is assigned the identifier '01', the CDMA component is assigned the identifier '02', and the GSM component is assigned the identifier '03'. In addition, each of the Internet component, CDMA component, and GSM component includes URL information defined in RFC 1738.

In the present embodiment, the URL information may include the type of service to be accessed, the location of the multimedia file associated with the event, that is, the location of the server providing detailed information of the multimedia format, and the location of the multimedia file associated with the event.

In this embodiment, any one of DMB, which is a broadcast network, and Internet, CDMA, and GSM, which are a communication network, may be used as a transmission medium of a multimedia object.

Additional information describes additional information or supplementary information related to multimedia-based traffic and travel information in text format for each message.

The location container 430c of the multimedia based traffic and travel information message 430 includes information for indicating the location of a point to which the multimedia based traffic and travel information is to be provided.

In the above-described sequence of the TPEG message segment of FIG. 4, the road traffic message and the multimedia-based traffic and travel information message are encoded in a continuous sequence, but the road traffic message and the multimedia-based traffic and travel information message are encoded in a continuous sequence. It may not be.

9 and 10 are flowcharts provided to explain a method for providing detailed information using a multimedia-based traffic and travel information application using traffic information according to an embodiment of the present invention.

Referring to FIG. 9, the terminal 100 receives TPEG information including a road traffic message application and a multimedia-based traffic and travel information application as shown in FIG. 4 [S210]. At this time, as described above, the TPEG information is included in the broadcast signal and broadcasted from the broadcast station 15.

The TPEG decoder 120 of the terminal 100 decodes the TPEG messages included in the received TPEG information, that is, the road traffic message and the multimedia based traffic and travel information message, and provides them to the processor 140. The road traffic information including the event is extracted by analyzing the decoded road traffic message [S220].

That is, the processor 140, for example, receives information that needs to be provided to the user from the hierarchical structure of the road traffic message as described above with respect to an event occurring within a predetermined range of area on the route on which the vehicle 20 is currently traveling. Extract.

Subsequently, the controller 130 determines the severity of the road situation according to the corresponding event using various information extracted by the processor 140 to determine whether the severity is more than a predetermined standard, that is, serious enough to require a route bypass or evacuation. It is determined whether or not [S230].

Whether road conditions are serious can be two approaches, for example.

One method may determine whether the road situation is severe using a severity (SEV) that indicates the degree of traffic failure due to an event included in the road traffic message. In this case, for example, if the severity (SEV) is provided at five levels, it may be determined that the road situation is serious if the level is higher than the one or two levels.

Alternatively, the terminal 100 may preset a criterion for determining the seriousness of the road situation according to various information about the event included in the road traffic message. For example, when the traffic is extremely difficult or the situation requiring evacuation such as the traffic control or the disaster area within the standard distance due to the event, the criteria are set in advance as a criterion for determining whether the evacuation or evacuation is necessary. In this case, the severity can be defined as above the standard.

If it is determined that the road situation is serious [S230: Y], the controller 130 controls the display unit 160 and / or the voice output unit 180 to display text on the display unit 160 for the seriousness of the road situation. Display in red or blinking form or output the alarm through the voice output unit 180 to notify the user, and control the processor 140 and the memory 150 to search for a detour route or search for evacuation information on the display unit 160 Can be displayed [S240].

The detour route may be an optimal route for reaching the destination, for example, away from the event location by a certain radius, and the evacuation information may for example be located at an outer place except for a certain radius from the event location, This can be a route for evacuation.

On the other hand, when the road situation is not serious enough to require a route detour or evacuation [S230: N], the controller 130 displays information about an event in the road traffic message extracted from the processor 140. By displaying in text form or graphical and / or text on an electronic map in a graphic form, an event such as an accident and / or its contents may be notified to the user [S250]. In addition, the event output may be notified through the voice output unit 180 in the form of a voice guide file, which may be performed in parallel with the output by the display unit 160.

11A to 11D are diagrams showing examples of screens displaying an event and its corresponding detailed information. Referring to FIG. 11A, map data is displayed on the display unit 160, and the controller 130 controls the display unit 160 to control an event occurring on a predetermined route or within a predetermined range of the vehicle 20 on the map data. In addition to displaying the location of each occurrence in the corresponding location of the map data, the contents of the event are simply displayed in the form of text of numbers and numbers such as 'under construction' and 'accident'.

Meanwhile, the terminal 100 generates an event to the user only when the event occurrence point is within a predetermined range based on the current position of the vehicle 20 or on a path selected according to the navigation of the vehicle 20. It may be implemented to inform the content.

Accordingly, the user may check the occurrence of the event and its contents, and request to provide more detailed information on the corresponding event through the input unit 170 [S260: Y].

If there is a request for detailed information on the corresponding event from the user, the controller 130 provides detailed information of the multimedia format [S270].

Referring to FIG. 10, a process for providing detailed information in a multimedia format will be described in more detail. When a request for detailed information on a corresponding event is received from a user, the processor 140 controls multimedia-based traffic under the control of the controller 130. And extract and provide various pieces of information necessary for interpreting the travel information message and requesting detailed information on the corresponding event to the controller 130.

The information extracted by the processor 140 to request detailed information about the corresponding event includes, for example, object information, information for appropiated applications, and transmission medium information as described above. ) And location information of a point corresponding to multimedia-based traffic and travel information.

If the available transmission medium includes one of the communication network, the Internet, CDMA, and GSM according to the dual transmission medium information, the controller 130 receives detailed information of the multimedia format through the included transmission medium, and includes two or more. In this case, detailed information may be received through any one of the transmission media in a predetermined priority order.

Of course, when more than one transmission medium is available and there is no preset priority, the user may be implemented to select a transmission medium. In this case, the controller 130 displays a transmission medium selection menu indicating the two or more transmission medium information extracted by the processor 140 to the display unit 160 so that a user can select any one transmission medium. I can display it. Thus, the user can select a specific transmission medium that he prefers.

The controller 130 controls the processor 140 to generate a message for requesting the multimedia data providing server 30 for detailed information of the multimedia type related to the event. The detailed information request message includes various information necessary for identifying the transmission medium information to be used in the terminal 30 and the corresponding event and transmitting the multimedia object corresponding to the related multimedia detailed information, and in the multimedia data providing server 30. Can be generated according to the various communication standards to support.

Subsequently, the controller 130 receives the multimedia object corresponding to the detailed information of the multimedia format related to the event from the multimedia data providing server 30 through the communication module 190 [S273].

Therefore, the controller 130 may provide the user with the detailed information of the received multimedia format through the display unit 160 and / or the voice output unit 170 [S275].

Referring back to FIG. 11A, a user may recognize an event occurrence through a screen displayed on the display unit 160 and select No. 1 corresponding to 'under construction'.

Accordingly, as described above, the controller 130 requests the multimedia data providing server 30 through the processor 140 and the communication module 190 to request the detailed information of the multimedia format related to the first event and receives the same. As illustrated in 11c, the display unit 160 may play a multimedia object corresponding to the detailed information of the multimedia format. In this case, as shown in the drawing, the controller 130 may control the processor 140 to extract the event-related information from the road traffic message and display the message along with, for example, the road construction under the riverside north road.

In addition, when the user selects No. 2 corresponding to the 'accident', the controller 130 receives the detailed information of the multimedia format related to the No. 2 event from the multimedia data providing server 30 through the communication module 190. As illustrated in FIG. 11D, the multimedia object corresponding to the detailed information in the multimedia format with the message “Hannam Bridge access road accident” may be played on the screen of the display unit 160.

The multimedia object corresponding to the detailed information of the multi-media format described above may be displayed as an image and text of a still image or as a video of a video such as a news form, and the audio output unit when audio data is included. It may also be output through (170).

Accordingly, the user can more clearly and easily check the event-related situation information through a video such as an image, a text, or a news form of the still image, and further determine whether to proceed or bypass the corresponding path.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

1 is a diagram briefly showing a traffic information providing system according to the present embodiment.

2 is a block diagram showing the configuration of a terminal according to the present embodiment.

3 is a diagram illustrating a format of TPEG information.

4 is a diagram illustrating TPEG information including a road traffic message application and a multimedia-based traffic and travel information application according to the present embodiment.

5A is a diagram illustrating a structure of an object information component, and FIGS. 5B to 5E are diagrams illustrating a component structure of execution classification, object classification, object capacity, and compression information.

6A through 6C are diagrams illustrating the structure of a video component, an audio component, and an image component.

FIG. 7A illustrates a format of an information type component, and FIGS. 7B to 7E illustrate formats of an information type component, a collector component, a contents description component, and a billing information component, respectively.

8A shows the structure of a transmission medium component, and FIGS. 8B-8E show the structure of DMB, Internet, CDMA, and GSM components, respectively.

9 and 10 are flowcharts provided for describing a traffic information providing method using a TPEG message according to an embodiment of the present invention.

11A to 11D illustrate an example of a screen displaying an event included in a road traffic message and detailed information corresponding thereto according to an embodiment of the present invention.

Claims (24)

Receiving message information having a hierarchical structure including road traffic information; The message information includes message management information including a message identifier, event information for indicating traffic information related to various events occurring on a road, and a link identifier assigned to each road section to indicate a location corresponding to the event information. Determining whether the location information is configured; And Determining the severity of the road situation based on the event information. The method of claim 1, And providing the detour or evacuation information if the severity is above a predetermined criterion. The method of claim 1, And analyzing the event information when the severity is lower than a predetermined criterion to provide traffic information related to the event. The method of claim 3, wherein Requesting and receiving the detailed information of the multimedia format related to the event from the multimedia data providing server when the request for the detailed information of the multimedia format related to the event is received. The method of claim 4, wherein Providing detailed information in the multimedia format, The message information may include message management information including a message identifier, multimedia object information including various types of information on a multimedia object corresponding to detailed information in a multimedia format associated with the event, and a location corresponding to the multimedia object information. Determining whether the location information is configured with location information including a link identifier assigned to the road section of the vehicle; And Requesting detailed information of the multimedia format from the multimedia data providing server based on the multimedia object information, and receiving the corresponding multimedia object. The method of claim 5, wherein The multimedia object information includes transmission medium information (bearer information) for transmitting the multimedia object, The receiving step is characterized in that for receiving the multimedia object via a specific transmission medium of the available transmission medium according to the transmission medium information. The method of claim 5, wherein The multimedia object information, A method comprising object information, information for appropiated applications, transmission medium information, or additional information. The method of claim 7, wherein The object information (Object Information), A method comprising a play type, an object type, an object format, an object size, or compression information. The method of claim 5, wherein And wherein the multimedia object comprises at least one of audio, video, and image. A broadcast signal receiver for receiving message information having a hierarchical structure including road traffic information; A decoder for decoding the message information; The message information includes message management information including a message identifier, event information for indicating traffic information related to various events occurring on a road, and a link identifier assigned to each road section to indicate a location corresponding to the event information. A processor that interprets the message information to determine whether it is composed of location information; And And a controller configured to determine a severity of a road situation based on the event information. The method of claim 10, And the processor provides the detour or evacuation information under the control of the controller when the severity is greater than or equal to a preset criterion. The method of claim 10, And when the severity is lower than a preset criterion, the processor interprets the event information under control of the controller and provides traffic information related to the event. The method of claim 12, An input unit for inputting a request for detailed information in a multimedia format related to the event; and Further comprising a communication module for communicating with the multimedia data providing server, When a detailed information request of a multimedia format related to the event is input through the input unit, The control unit, characterized in that the multimedia data providing server through the communication module requesting and receiving the detailed information of the multimedia format associated with the event. The method of claim 13, When a detailed information request of a multimedia format related to the event is input through the input unit, The processor indicates the multimedia object information including the message management information including the message identifier, various information on the multimedia object corresponding to the detailed information in the multimedia format related to the event, and the location corresponding to the multimedia object information. The message information is interpreted to determine whether the information is composed of location information including a link identifier assigned to each road segment to be paid. The controller may be configured to receive the corresponding multimedia object by requesting detailed information of the multimedia format from the multimedia data providing server through the communication module based on the multimedia object information. The method of claim 14, The multimedia object information includes transmission medium information (bearer information) for transmitting the multimedia object, And the control unit controls the communication module to receive the multimedia object through a specific transmission medium among possible transmission media according to the transmission medium information. The method of claim 14, And a display unit for playing the multimedia object when the received multimedia object includes an image or a video. The method of claim 15, And a voice output unit for reproducing the multimedia object when the received multimedia object includes audio. A traffic information providing server configured to reconstruct road traffic information into message information having a hierarchical structure and to broadcast it through a broadcasting station; And Receive, decode and interpret the message information so that the message information indicates message management information including a message identifier, event information for indicating traffic information related to various events occurring on a road, and a position corresponding to the event information, respectively. And a terminal configured to determine whether the location information includes a link identifier assigned to the road section, and to determine the severity of the road situation based on the event information. The method of claim 18, The terminal, if the severity is more than a predetermined criterion, characterized in that for providing a detour or evacuation information. The method of claim 18, The terminal, if the severity is lower than a predetermined criterion, characterized in that for providing the traffic information associated with the event by interpreting the event information. The method of claim 18, And a multimedia data providing server providing a multimedia object corresponding to the detailed information of the multimedia format related to the event. The method of claim 21, The terminal requests detailed information of the multimedia format related to the event from the multimedia data providing server; And the multimedia data providing server transmits the multimedia object corresponding to the requested detailed information of the multimedia format to the terminal. The method of claim 22, When the terminal receives a request for detailed information in a multimedia format related to the event, The message information may include message management information including a message identifier, multimedia object information including various types of information on a multimedia object corresponding to detailed information in a multimedia format associated with the event, and a location corresponding to the multimedia object information. The location information including the link identifier assigned to the road segment of And requesting detailed information of the multimedia format from the multimedia data providing server based on the multimedia object information. The method of claim 22, And the terminal and the multimedia data providing server communicate through at least one transmission medium of the Internet, code division multiple access (CDMA), or global system for mobile communication (GSM).

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