KR20070111221A - Method and apparatus for traffic information service - Google Patents

Abstract

A method and an apparatus for traffic information service are provided to transmit video data of an application without including a message of the application and transmit the application message including video data position information, thereby reducing the amount of data to be transmitted and message transmission time in real time environment. A method for traffic information service comprises the following steps of: transmitting at least one video data related to an application without including a message of the application and transmitting the application message including at least one video data position information; and outputting video data related to the application by referring to position information included in a received application message and displaying the outputted video data. The application message and video data are transmitted through a mobile communication network.

Description

METHOD AND APPARATUS FOR TRAFFIC INFORMATION SERVICE}

1 is a diagram schematically illustrating a network in which traffic related information is provided according to an embodiment of the present invention.

Figure 2a is a schematic diagram showing an example of transmitting traffic-related information using a data transmission channel according to the present invention

2b is a view showing an example in which traffic-related information is transmitted by configuring the MOT carousel according to the present invention

3 illustrates an example of a syntax structure for transmitting image data according to the present invention.

4A to 4E are diagrams illustrating embodiments in a case where a still image is included in the syntax of FIG. 3 and transmitted;

5A through 5E are diagrams illustrating embodiments in a case where a video is transmitted in the syntax of FIG. 3.

6A to 6D are diagrams illustrating embodiments in a case where the location information of image data is transmitted to the syntax of FIG. 3.

7 is a block diagram showing an embodiment of a broadcast receiver according to the present invention;

Explanation of symbols for the main parts of the drawings

10: content 11: broadcasting center

12: Traffic and Travel Information Source 13: Traffic and Travel Information Collection Center

14: broadcast receiver 71: tuner

72: demodulator 73: demultiplexer

74: first decoder 75: second decoder

76: packet decoder 77: data group decoder

78: MOT decoder 79: storage unit

80: TPEG decoder 81: TDC decoder

82: TPEG output section

The present invention relates to a method and apparatus for a traffic information service.

Due to the widespread use of automobiles, the increase of vehicles in the city center and the effects of the five-day week system have increased the need for traffic information on roads due to the increase of vehicles outside the city center on weekends. According to such a need, a traffic information service is provided.

The traffic and travel information (TTI) service of the traffic-related information service provides the user with all transportation means such as trains, passenger ships, aircrafts, and the like, as well as road traffic through a broadcasting network or a wired / wireless communication network. In addition, it provides the user with traffic information, road conditions, traffic-related information such as road and facility construction, living information such as weather and news, interest information such as gas stations, tourist points, restaurants, and the like.

The TTI service is provided in the form of text, voice, and still image, and the transmitting side transmits the TTI service to the receiving side in message units.

At this time, the still images such as photos and pictures take a lot of time because of the large amount of data. However, since these still images are included in the message of the TTI service and transmitted, the transmission period of the message is long.

The present invention is to solve the above problems, an object of the present invention to provide a method and apparatus for shortening the transmission period of traffic and travel information.

In order to achieve the object of the present invention, the traffic information service method according to an embodiment of the present invention, when transmitting a traffic-related application message, one or more image data related to the application is transmitted separately without including in the message of the application And transmitting location information of the at least one image data to the application message. And extracting and displaying image data related to the application with reference to the location information included in the received application message.

In the transmitting step, the application message and the image data is characterized in that the transmission using a mobile broadcast network.

The mobile broadcasting network is a digital multimedia broadcasting network.

The location information may include at least identifier information, data length information, and location data corresponding to the data length.

According to another aspect of the present invention, there is provided a traffic information service method comprising: generating and transmitting an application message including at least one of still image data, video data, and image data location information related to a traffic related application; When the location information is included in the application message, transmitting the image data corresponding to the location information in a separate image data file without including the location information in the application message; And extracting and displaying the image data file corresponding to the location information included in the received application message.

A receiving apparatus for a traffic information service according to the present invention includes: a receiving unit for tuning and demodulating a specific channel including a traffic and travel information (TTI) service; A decoding unit for extracting an application message by separating and decoding the TTI service demodulated by the receiving unit; A storage unit which stores the image data file included in the TTI service demodulated by the receiver; And an output unit for extracting and displaying an image data file corresponding to the location information included in the decoded TTI service application message from the storage unit.

The one or more image data related to the application of the TTI service received by the receiver is received as a separate image data file, not included in the application message, and the application message includes location information of the one or more image data. do.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described. At this time, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, by which the technical spirit of the present invention and its core configuration and operation is not limited.

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 description thereof will be omitted.

In addition, the terminology used in the present invention is a general term that is currently widely used as much as possible, but in certain cases, the term is arbitrarily selected by the applicant. In this case, since the meaning is described in detail in the description of the present invention, It is intended that the present invention be understood as the meaning of the term rather than the name.

The present invention is to shorten the transmission period of the traffic and travel information by separately transmitting the video data in the traffic and travel information service in the message. In this case, the message includes only location information of the image data. In the present invention, the image may be at least one of a still image and a moving image.

The still image may be BMP (Bitmap), Joint Photographic Group (JPG), Tagged Image File Format (TIFF), Graphics Interchange Format (GIF), Portable Network Graphics (PNG), etc. MPEG (Moving Picture Experts Group) -1, MPEG-2, MPEG-4, etc. are possible. The still image and moving picture compression formats are embodiments, and the present invention will not be limited by the above-described embodiments because the compression format may vary according to a system designer or a system specification.

In addition, the traffic and travel information (TTI) service according to the present invention can be applied to various digital broadcasting standards. Examples of digital broadcasting standards include Digital Audio Broadcasting (DAB), Digital Video Broadcasting-Terrestrial (DVB-T), Digital Video Broadcasting-Handheld (DVB-H), Forward Link Only (MediaFLO), and Digital Multimedia Broadcasting (DMB). Etc. The DMB includes terrestrial digital multimedia broadcasting (T-DMB) and satellite digital multimedia broadcasting (S-DMB). In addition, the traffic and travel information service according to the present invention is applied to Wi-Fi, Wibro (Wireless Broadband Internet), and the like, which are wireless Internet.

The TTI service may be applied to various protocols. Examples of the protocol include a TMC (Traffic Message Channel) for RDS (Radio Data System), an FM Data Radio Channel (DARC), and a Transport Protocol Expert Group (TPEG) protocol. The TPEG protocol is a technology for providing TTI services to the broadcasting and the Internet, and was started in 1997 by a project group of the European Broadcasting Union (EBU).

An embodiment of the present invention provides a TTI service using a DMB network, in particular, a terrestrial DMB network and applying a TPEG protocol.

Applications of the TTI service transmitted through the terrestrial DMB network are various, for example, communication and travel time information (CTT), point of interest (POI), safe driving information ( Safety Driving Information (SDI), Road Event Information (REI), News Information (NWS), Traffic Status Information (TSI), and the like.

That is, the TTI service of the present invention focuses on communication status information (CTT), point of interest information (POI), safe driving information (SDI), notice information (REI), and news based on a user's current location or a point of interest. Each application such as information (NWS) and road image information (TSI) is provided to the terrestrial DMB network by applying the TPEG protocol.

The communication situation information (CTT) application is a service that provides road or traffic-related communication information and congestion information, the point of interest information (POI) application is a major interest, such as travel destinations, tourist attractions, restaurants, theaters, hotels, medical, financial institutions It is a service that provides information about branches and regions. The safe driving information (SDI) application is a service that provides information necessary for the safe driving of travelers, such as speeding dangerous points on the road, accidents, and accidents, and the REI application is a road accident, congestion, construction section It is a service that provides information such as events and gatherings. The news information (NWS) application is a service for providing news information, and the traffic situation image information (TSI) application is a service that processes and provides a road situation provided by CCTV as an image.

1 is a block diagram illustrating an embodiment of a transmission system for transmitting a TTI service through a DMB network according to an embodiment of the present invention, wherein a content source 10, a broadcasting center 11, a TTI source 12, and a TTI collection are shown. The center 13 and the DMB terminal 14 are comprised.

The DMB terminal 14 capable of receiving the DMB service and the TTI service may be, for example, a mobile phone coupled type, a vehicle mounted type, a PDA (Personal Digital Assistant) type, a standalone portable type, a notebook computer, a portable multimedia player (PMP), or the like. Therefore, the DMB terminal of the present invention will not be limited to the example described above.

The content source 10 including the DMB service, for example, video, audio and data service, is transmitted to the broadcasting center 11. And TTI services, for example, communication status information (CTT), point of interest information (POI), safe driving information (SDI), notice information (REI), news information (NWS), road situation image information (TSI) applications, etc. Is collected through the TTI collection center 13 and transmitted to the broadcasting center 11. The broadcasting center 11 records the TTI applications in a TPEG message of a predetermined format defined by the TPEG technology, records the TTI applications, and transmits the TTI applications to the DMB terminal 14 together with the DMB service.

The DMB terminal 14 extracts and decodes the TPEG message received with the DMB service, and outputs it to the user as at least one of voice, text, and video, thereby displaying more traffic and traffic to the user carrying the DMB terminal. Provide travel information.

In this case, the TTI service may be transmitted through a multimedia object transfer (MOT) protocol or a transparent data channel (TDC). That is, the TTI service corresponds to one of the DMB data services.

The MOT technology provides a method of transmitting all kinds of multimedia objects such as text, still images, moving images, and audio, and a method of receiving and expressing or manipulating the transmitted multimedia objects in a receiver.

All information transmitted to the MOT is delivered as an object of limited length from the information source to the destination. In the case of the packet mode, one subchannel may include a plurality of service components. Each service component is a stream of MOT objects identified by packet addresses. In addition, the MOT object to be delivered is divided into segments to facilitate management of data during transmission. The divided segment is transmitted using a data group transmission method, wherein the data group is divided into at least one packet and transmitted in a packet mode. In addition, the TTI data files transmitted through the MOT data transmission channel in the transmission system must use the MOT directory because a MOT carousel must be configured.

The TDC technology provides a method of forming a transparent data channel in a terrestrial DMB system and synchronizing data to be transmitted in a stream mode or a packet mode.

In the DMB service, at least one service component constitutes one service and at least one service constitutes one ensemble.

The service component means video, audio, traffic information, or broadcast service information constituting a broadcast. In addition, a service corresponds to a broadcast channel, and one service includes one or more service components. The service component may come from each sub-channel of the main service channel (MSC) and the fast information data channel (FIDC).

The service component may correspond to a sub channel 1: 1 in the stream mode, and at least one service component may be included in one sub channel in the packet mode.

The DMB transport frame includes a synchronization channel, a fast information channel (FIC), and a main service channel (MSC).

The synchronization channel has a predetermined form in which the receiver recognizes the beginning of the frame, and the FIC consists of a plurality of FIBs and is used for transmitting various information for receiving a broadcast service. In addition, the MSC is composed of one or more Common Interleaved Frame (CIF), and is used for transmitting broadcast services such as video, audio, and data.

That is, the FIC includes information indicating the structure of data carried in the CIF in the MSC. When the TTI service is transmitted by applying the TPEG protocol, the TTI application is transmitted through the MSC, and the TTI application transmitted through the MSC. The relevant information for decoding the data is transmitted via the FIC.

At this time, TTI applications transmitted by applying the TPEG protocol are transmitted in a message unit.

FIG. 2A illustrates an example of a message sequence, in which a POI, NWS, TSI, and CTT application are included in each message and transmitted in one stream. In this case, one application may be included in one message or may be divided and included in one or more messages. And one message contains only one application.

In this case, when the messages are transmitted through the MOT, only the message part of at least one TPEG frame is filed and transmitted. When the messages are transmitted through the TDC, the messages are transmitted in TPEG frame units. The one TPEG frame includes a payload including one or more messages and a header including information related to the messages of the payload.

One or more files form a MOT carousel and are repeatedly transmitted. In FIG. 2B, five files of 1 to 5 constitute one MOT carousel and are transmitted to one service component, and two files of 1 'and 2' constitute one MOT carousel and the other Shows an example transmitted to the service component. 2B shows an example in which the two service components are transmitted in one subchannel.

Each TTI application is assigned a unique identification number called an application identifier (AID), which is used by the DMB terminal to receive and decode the TTI application.

At this time, some applications of the TTI service delivers information to the user in the form of an image.

For example, in the case of the POI application, information on a region of interest itself, a category-specific image, that is, information about a product such as an inside, an outside view, a map, an icon, and a bird's eye view may be provided as a still image. In the case of the NWS application, it is possible to provide photographic information or video information related to an article, and in the case of a TSI application, CCTV traffic image information as a still image.

Among the TTI applications, if the still image data is transmitted in the corresponding message, the still image data is transmitted. Therefore, since the still image data is large, it takes a long time to receive the corresponding message. Can take a long time to process. In addition, other messages transmitted consecutively to the message are also likely to be adversely affected by the message.

According to an embodiment of the present invention, when an image is transmitted in one TTI application, the image data is separately transmitted without being included in a message of the corresponding application, and only the location information of the image data is transmitted in the corresponding message. do. The image is one of a still image and a moving image.

The location information is link information necessary to find and execute the image data, and may be transmitted in various forms. According to an embodiment of the present invention, a Uniform Resource Locator (URL), in particular, a DAB URL standard or a DMB URL standard is used.

At this time, the messages are transmitted to either the MOT or the TDC, and the image data is transmitted in the form of a file through the MOT. The location information may include a directory in which the file is stored, a file name, and the like.

Here, the image data file and a file including a message corresponding to the image data file may configure the same MOT carousel or may constitute another MOT carousel.

As described above, the present invention transmits the image data to be displayed separately without being included in the message of the corresponding application, and transmits only the path information for finding the image data in the corresponding message. In this case, when a file includes a plurality of messages, a file including the message and a file transmitting image data related to the message should be different from each other.

3 illustrates an embodiment of a corresponding syntax in a message for transmitting image data according to the present invention, and is a structure in which at least one of a still image, a video, and URL information can be selected. The syntax structure can be applied to all applications of the TTI service for transmitting an image. For example, the POI application transmits a map of a region of interest, or the NWS application transmits a picture related to news.

The syntax structure of FIG. 3 includes a component data length field in bytes and a selector field for selecting at least one of still image, video, and URL data. According to an embodiment of the present invention, the selector field is allocated 8 bits, and is a bitwise method.

That is, the present invention may include transmission of one or more still image data in a message, transmission of one or more video data, or transmission of one or more URL data. Alternatively, different types of data may be simultaneously included and transmitted. For example, one or more still image data and video data may be transmitted, or one or more still image data and URL data may be transmitted.

In FIG. 3, the lowest bit in the selector field is set to 1 when transmitting the still image data to be actually displayed in the message. In other words, if the least significant bit in the selector field is set to 1, it means that still image data is transmitted in the corresponding message.

The lower second bit in the selector field is set to 1 when transmitting the video data to be actually displayed, and the lower third bit in the selector field is set to 1 when transmitting the URL data. In the case where the still image and the moving image data are simultaneously transmitted, the lower first and second bits in the selector field are all set to one.

4A to 4E show a syntax structure in which the least significant bit of the selector field is set to 1, that is, the transmission of still image data.

FIG. 4A illustrates an example of a still picture component template included in the case where the least significant bit of the selector field is set to 1. FIG. 4A illustrates the number of still picture components included in still picture components in bytes. The number field 411 to display and the number of still image components 412 of the number displayed in the said number field 411 are comprised. For example, if the number field 411 is 0x02, two still image components are included in the still image component.

4B illustrates an example of a still picture component template included in the still picture component, an identifier field 413, a byte length component data length field 414, and a still picture corresponding to the data length. And an image data field 415.

The identifier field 413 indicates a compression format of the still image data included in the still image data field 415. 4C to 4E illustrate an embodiment, and the compression format of the still image data included in the still image data field 415 may be different according to the value of the identifier field 413.

As illustrated in FIG. 4C, when the value of the identifier field 413 is 00, this indicates that the still image data included in the still image data field 415 is compressed in the BMP format. That is, if the still image data is compressed in the BMP format, '00 hex 'is allocated to the identifier field 413.

As shown in FIG. 4D, when the value of the identifier field 413 is 01, this indicates that the still image data included in the still image data field 415 is compressed in the PNG format.

When the identifier field 413 has a value of 02 as shown in FIG. 4E, it indicates that the still image data included in the still image data field 415 is compressed in the JPG format.

5A to 5E show a syntax structure in which the lower second bit of the selector field is set to 1, that is, a video data transmission example.

FIG. 5A illustrates an example of a video components template included when the lower second bit of the selector field is set to 1, and indicates the number of video components included in the video components in bytes. The number field 511 and as many video components 512 as the number displayed in the number field 511 are included.

FIG. 5B illustrates an example of a video component template included in the video component, the identifier field 513, the component data length field 514 in bytes, and the video data field corresponding to the data length. And 515.

The identifier field 513 value indicates a compression format of video data included in the video data field 515. 5C to 5E illustrate an embodiment, and the compression format of the video data included in the video data field 515 may be different according to the value of the identifier field 513.

When the identifier field 513 value is 00 as shown in FIG. 5C, it indicates that the video data included in the video data field 515 is compressed in the MPEG-1 format.

If the value of the identifier field 513 is 01 as shown in FIG. 5D, it indicates that the video data included in the video data field 515 is compressed in the MPEG-2 format.

When the identifier field 513 value is 02 as shown in FIG. 5E, it indicates that the video data included in the video data field 515 is compressed in the MPEG-4 format.

6A to 6D show a syntax structure when the lower third bit of the selector field is set to 1, that is, an example of transmitting URL data.

FIG. 6A illustrates an example of a URL components template included when the lower third bit of the selector field is set to 1, and indicates the number of URL components included in URL components in bytes. The number field 611 and as many URL components 612 as the number displayed in the number field 611 are configured.

FIG. 6B illustrates an example of a URL component template included in the URL component, the identifier field 613, the component data length field 614 in bytes, and the URL data field corresponding to the data length. And 615.

The identifier field 613 value indicates a format of URL data included in the URL data field 615. 6C illustrates an example in which URL data included in the URL data field 615 is displayed in a DAB URL format. The URL format may include a DAB URL, a DMB URL, an Internet URL, an ATSC URL, and the like. The addressing scheme may vary depending on the URL format.

The DAB URL component of FIG. 6C includes an identifier field 613, a component data length field 614 in bytes, a content type field 616, and a DataURL field 617.

That is, when the URL data format included in the URL data field 615 is a DAB URL format, '00 hex 'is allocated to the identifier field 613.

The content type field 616 indicates whether the content corresponding to the URL data is a still image, a video, or a voice.

The DataURL field 617 describes DataURL, which is location information of the content indicated by the content type field 616, in a text format.

FIG. 6D shows an example of displaying a DataURL included in the DataURL field 617 in a DAB URL format. Referring to FIG. 6D, location information of the corresponding content is displayed in a structure of DataURL = DataScheme ": //" DataChannelAddress ["/" ProtocolSpecific]. That is, a data transmission channel protocol (DataScheme) through which the TTI service is transmitted is described, and a delimiter ": //" for distinguishing a protocol and an address is described next to the protocol (DataScheme). Next, the data channel address (DataChannelAddress) is described, and if necessary, a separator "/" and a protocol specification are described.

The data transmission channel protocol (DataScheme) is "dab.dta.mot.dir", "dab.dta.mot.hdr", "dab.dta.tdc.dg", "dab.dta.tdc.str", " dab.dta.dl "," dab.dta.ip ".

The data channel address (DataChannelAddress) describes the XPAD application type (XPADApplicationType) and "@" if necessary. Next, a Service Component Identifier within Service (SCIdS), a delimiter ".", And a data service address (DataServiceAddress) are described.

The protocol specification corresponds to the case where the TTI service is transmitted to the MOT, and describes a file name.

The data service address (DataServiceAddress) in the data channel address (DataChannelAddress) describes a service identifier (Sid) and, if necessary, an ensemble address.

The ensemble address describes a frequency Freq and an ensemble identifier EID.

For example, if the URL data included in the DataURL field 617 is "Dab.dta.mot.dir: //0c@0.1234.fe: 12c / logo.jpg", the data transmission channel protocol (DataScheme) is Dab. dta.mot.dir, data channel address (DataChannelAddress) is 0c@0.1234.fe: 12c, and the file name is logo.jpg. Since the extension of the file name is jpg, it can be seen that the image data corresponding to the URL is a still image. That is, it can be seen that the TTI service is transmitted through XPAD (0c @) using the MOT directory (Dab.dta.mot.dir). In this case, the service component identifier SCIdS is 0.1234, the service identifier Sid in the data service address DataServiceAddress is fe, and the ensemble address EnsembleAddress is 12c.

As another example, if the URL data included in the DataURL field 617 is "Dab.dta.mot.hdr: //0.1234: 12a / slide.jpg", the data transmission channel protocol (DataScheme) is Dab.dta.mot. hdr, the data channel address (DataChannelAddress) is 0.1234: 12a, and the file name is slide.jpg.

In this case, the image data corresponding to the file name is not included in the message and is composed of a separate image data file and transmitted to the MOT. For example, a message including URL data may be transmitted through a TDC, and an image data file classified by the URL data may be transmitted through a MOT. Alternatively, the same MOT may be transmitted. In this case, the file through which the message is transmitted and the file through which image data are transmitted may be included in the same MOT carousel or may be included in different MOT carousels.

The transmitted image data is decoded into a database in a storage device such as a memory, and the image data databased in the storage device is distinguished by URL data. That is, when display of image data is required, image data corresponding to the URL data is read from the storage device and displayed on the screen.

Taking the NWS application as an example, the still image data such as a picture related to an article is transmitted separately without being included in the message for transmitting the NWS application, and the message for transmitting the NWS application includes location information related to the still image, that is, a URL. Transmit including data.

FIG. 7 is a block diagram illustrating an embodiment of a broadcast receiver for receiving and processing a TTI service transmitted from a transmitter as described above. Since the present invention has been described as an embodiment of transmitting a TTI service through a DMB network according to an embodiment, the broadcast receiver of FIG. 7 corresponds to a DMB terminal.

The broadcast receiver of FIG. 7 includes a tuner 71, a demodulator 72, a demultiplexer 73, a first decoder 74, a second decoder 75, a packet decoder 76, and a data group decoder 77. And a MOT decoder 78, a storage unit 79, a TPEG decoder 80, a TDC decoder 81, and a TPEG output unit 82.

In the present invention configured as described above, the tuner 71 tunes a frequency corresponding to an ensemble including a DMB service or a TTI service selected by the user, lowers it to the baseband, and outputs the demodulator 72. The demodulator 72 performs inverse modulation of the modulation scheme, that is, OFDM demodulation, and outputs a transmission frame composed of a synchronization channel, an FIC, and an MSC to the demultiplexer 73.

The demultiplexer 73 separates the FIC and the MSC by referring to the synchronization channel in the demodulated transmission frame, decodes the MSC, extracts the data in the MSC, and outputs the data to the corresponding decoder. In the present invention, only the MSC process will be described briefly, and the description of the FIC process will be omitted. Only the TTI service of the data service will be described.

That is, if the extracted data is audio data encoded by a masking pattern adapted universal sub-band integrated coding and multiplexing (MUSICAM) method, the extracted data is output to the first decoder 74. If the data stream is separated into audio, video, and data streams, additional error correction decoding, transport stream depacketizing, PES (packetized element stream) depacketizing, and SL (Sync) are performed for each stream. Layer) depacketizing and the like and output to the second decoder 75.

The first decoder 74 decodes the input audio data in a music cam method and outputs the result.

The second decoder 75 decodes and outputs the inverse of the encoding process applied to the input stream. For example, if the input stream is a video stream, the H.264 decoding algorithm decodes the video stream. If the input stream is the BSAC decoding algorithm, the audio stream is decoded.

Meanwhile, the packet decoder 76 decodes the MSC data transmitted in the packet mode and outputs the decoded MSC data to the data group decoder 77. The data group decoder 77 separates the data processed by the packet decoder 76 from the data group, and then outputs the data transmitted to the MOT to the MOT decoder 78, and the data transmitted to the TDC is a TDC decoder 81. ) For example, when the TTI service is transmitted to the MOT, the TTI service object is divided into segments and transmitted in packet mode to facilitate data management during transmission.

The MOT decoder 78 collects segments transmitted to the MOT, forms a file, outputs the file to the storage unit 79, and simultaneously outputs the segment to the TPEG decoder 80. In this case, when image data of a specific application is transmitted separately without being included in the message of the application, a file corresponding to the image data is databased in the storage unit 79.

The TDC decoder 81 outputs the data stream transmitted to the TDC to the TPEG decoder 80.

If the input signal is a TTI service, the TPEG decoder 80 decodes the input signal into a TPEG message, interprets the message, and transmits necessary information and / or control signals according to the message content to the TPEG output unit 82. Output

In this case, when the image data of the application is included in the message of the application, the image data is extracted from the message and output to the TPEG output unit 82.

When the image data of the application is transmitted separately without being included in the message, URL information corresponding to the image data is extracted from the message, and the image data file corresponding to the URL information is read from the storage unit 79. It is output to the TPEG output unit 82.

The TPEG output unit 82 processes the application corresponding to the message output from the TPEG decoder 80 according to the output means and outputs at least one of voice, text, and video. The TPEG output unit 82 performs a decoding process on the image data if necessary. That is, the image data file corresponding to the URL information included in the message of the application is automatically read from the storage unit 79, decoded by the corresponding decoding algorithm, and displayed on the screen.

If the broadcast receiver is equipped with a GPS and an electronic map is stored in the storage unit 79, a necessary portion of the electronic map is read from the storage unit 79 based on the current position coordinates received from the GPS screen. After the information is displayed, the required information may be output as at least one of audio, text, and video.

In addition, even if the broadcast receiver is not equipped with GPS or an electronic map is not provided, necessary information is output as at least one of audio, text, and video.

As such, the present invention provides a TTI service requested by the user with at least one of voice, text, and video even in a broadcast receiver that is not equipped with an electronic map or a GPS or that is not equipped with both an electronic map and a GPS.

In the present invention described so far, video data is separately transmitted without being included in a message of a corresponding application, and only the location information is transmitted in a message of the application, but as an embodiment, this is only one embodiment and the present invention. Is equally applicable to voice, text, and the like.

As described above, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. And the scope of protection of the present invention should be interpreted by the claims below, all technical ideas within the equivalent scope will be construed as being included in the scope of the invention.

As described above, according to the traffic information service method and apparatus according to the present invention, communication status information (CTT), point of interest information (POI), safe driving information (SDI), notice information (REI), news information (NWS), Data included in the message by transmitting image data of an application such as road image information (TSI) separately without being included in the message of the corresponding application, and transmitting location information of the image data separately transmitted in the application message. As the volume is reduced, the message transmission time is shortened in the real-time environment, and the image required by the user can be displayed on the screen more quickly.

Claims (27)

When transmitting a traffic-related application message, one or more image data related to the application is transmitted separately without being included in the message of the application, and transmitting the application message including location information of the one or more image data; And And extracting and displaying image data related to the application by referring to the location information included in the received application message. The method of claim 1, The application message and the video data in the transmitting step is characterized in that the traffic information service method is transmitted using a mobile broadcast network. The method of claim 2, The mobile broadcasting network is a traffic information service method, characterized in that the digital multimedia broadcasting network. The method of claim 1, In the transmitting step, the application message is transmitted through one of the MOT protocol and the TDC, and the image data is transmitted through the MOT protocol. The method of claim 4, wherein When the application message and the image data is transmitted through the MOT protocol, the traffic information service method characterized in that the file and the image data file including the application message is different. The method of claim 1, The image is a traffic information service method, characterized in that any one of a still image and a video. The method of claim 1, wherein the location information And at least identifier information, data length information, and location data corresponding to the data length. The method of claim 7, wherein The location information further comprises type information of the image data. The method of claim 7, wherein Traffic information service method, characterized in that the location data is displayed in the form of a URL. The method of claim 7, wherein And the location data includes at least data transmission channel protocol information, a data channel address, and a file name of corresponding video data. The method of claim 1, The traffic related application is one of applications included in a traffic and travel information (TTI) service. Generating and transmitting an application message including at least one of still image data, moving image data, and image data position information related to a traffic related application; When the location information is included in the application message, transmitting the image data corresponding to the location information in a separate image data file without including the location information in the application message; And And extracting and displaying the image data file corresponding to the location information included in the received application message. The method of claim 12, In this step, the application message and the image data is a traffic information service method characterized in that the transmission using a digital multimedia broadcasting network. The method of claim 12, In this step, the application message is transmitted via one of the MOT protocol and TDC, the image data file is traffic information service method characterized in that the transmission via the MOT protocol. The method of claim 12, wherein the location information And at least identifier information, data length information, and location data corresponding to the data length. The method of claim 15, The location information further comprises type information of the image data. The method of claim 15, Traffic information service method, characterized in that the location data is displayed in the form of a URL. The method of claim 15, And the location data includes at least data transmission channel protocol information, a data channel address, and a file name of corresponding video data. The method of claim 12, wherein the receiving step Storing the received image data in a storage means; And And reading out and displaying the video data file corresponding to the location information included in the application message selected by the user from the storage means. A receiver for tuning and demodulating a specific channel including a traffic and travel information (TTI) service; A decoding unit for extracting an application message by separating and decoding the TTI service demodulated by the receiving unit; A storage unit which stores the image data file included in the TTI service demodulated by the receiver; And And an output unit configured to extract and display an image data file corresponding to the location information included in the decoded TTI service application message from the storage unit. The method of claim 20, The one or more image data related to the application of the TTI service received by the receiver is received as a separate image data file, not included in the application message, and the application message includes location information of the one or more image data. Receiving device. The method of claim 21, And the application message and the image data are received through a digital multimedia broadcasting network. The method of claim 21, And the application message is received through one of a MOT protocol and a TDC, and an image data file is received through a MOT protocol. The method of claim 21, wherein the location information is And at least identifier information, data length information, and position data corresponding to the data length. The method of claim 24, And the location information further includes type information of image data. The method of claim 24, And the location data is displayed in URL format. The method of claim 24, And the location data includes at least data transmission channel protocol information, a data channel address, and a file name of corresponding video data.

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