KR20070102355A - Method and apparatus for providing public transport information and using it - Google Patents

Abstract

A method and an apparatus for providing and using public transport information are provided to improve the convenience of use and to reduce the number of self-driving vehicles by expecting the waiting time for the public transport system via installing a demodulator outputting the message sequence. An apparatus for providing public transport information includes a demodulator(804), a decoder(806), an output unit, and a control unit(822). The demodulator outputs the message sequence having the public transport information by demodulating the received signal. The decoder decodes the extracted public transport information and the position information by extracting the identified information indicating the information of the message segment to be the road event information and the public transport information including the road event information from each message segment in the message sequence. The output unit outputs the information. The control unit outputs the information received from the decoder through the output unit. The public transport information includes a detailed description about the road event information.

Description

Method and Apparatus for Providing Public Transport Information and Using it}

1 is a diagram schematically illustrating a network in which public transportation information is provided;

FIG. 2 is a diagram illustrating a transport format of a PTI event container configured for a public transportation information message constructed according to an embodiment of the present invention; FIG.

3 is a diagram showing a transport format of a public transport information message constructed according to an embodiment of the present invention, focusing on the TPEG location container;

4A to 4K illustrate syntaxes for components constituting the transport format of FIG. 2, respectively.

5A through 5F illustrate syntaxes for components constituting the transport format of FIG. 3, respectively.

6A to 6C are diagrams illustrating a TPEG PTI table to be added according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating a specific example of public transportation information transmitted according to the embodiment of FIGS. 2 and 3;

8 is a block diagram showing the configuration of a terminal for receiving shifted traffic information;

9 is a diagram illustrating a process of displaying public transportation information provided according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

120: traffic information providing server 130: broadcasting center

140: terminal

802: radio transceiver 804: demodulator

806: TPEG decoder 812: GPS module

822: control unit 832: input unit

842: LCD driver 844: LCD display

852: storage unit

The present invention relates to a method and apparatus for providing public transportation information and using the same. More particularly, the present invention relates to a method and apparatus for encoding and providing public transportation information.

With the development and convergence of digital signal processing and communication technology, radio and TV broadcasting are developing from analog broadcasting to digital multimedia broadcasting. In general, digital multimedia broadcasting is a service capable of receiving TV video, radio, and text broadcasting while moving using digital broadcasting technology, and is capable of providing CD-level sound quality and data or video services. It is a multimedia mobile broadcasting service that combines digital communication and broadcasting. The digital multimedia mobile broadcasting service can provide a variety of information together, such a variety of information, such as news, securities, weather and traffic information.

On the other hand, roads are often congested due to the increase of vehicles in the city, and environmental pollution is increasing accordingly, and the use of public transportation is highly recommended in the country due to the economic burden caused by the rising oil prices. However, in order to facilitate the use of public transportation, in the case of buses that operate on public roads, in particular on roads with general vehicles, it is necessary to provide driving information and information on changes in operating time according to road conditions. In particular, there may be a change in the operating time or route depending on the sudden situation that may occur suddenly, so you need to provide information about these situations.

However, the provision of such information on public transportation requires a unified standard because many terminals different from the manufacturer assume that the digital traffic information broadcasted should be detected and interpreted in the same manner and provided to the user. Shall be.

In order to meet the necessity as described above, it is an object of the present invention to provide a method and apparatus for providing information on a notice situation that may affect the operating time or route change of public transportation means.

In order to achieve the object of the invention as described above, the present invention provides a method for encoding traffic information including at least one traffic information message, generating public transportation information including notice information generated in the path of public transportation; ; Generating location information corresponding to the notice information; Generating identification information indicating that the traffic information is public transportation information including the yugo information; And constructing a message segment including the generated information, wherein the public transportation information includes additional information including a detailed description of the notice information. There is a characteristic.

The present invention also provides a method of decoding traffic information including at least one traffic information message, comprising: extracting a message segment carrying public traffic information; Extracting location information corresponding to the notice information and the public transportation information including notice information generated in the path of the public transportation means from the message segment; Extracting identification information indicating that the information contained in the message segment is the notice information from the message segment; And decoding the extracted public transportation information and location information, and extracting detailed description of the yugo information from the public transportation information.

According to another aspect of the present invention, there is provided an apparatus for decoding traffic information including at least one traffic information message, comprising: a demodulator for demodulating a received signal and outputting a message sequence carrying public traffic information; A decoder for extracting public transport information including yugo information from each message segment in the message sequence, extracting identification information indicating that the information on the message segment is yugo information, and decoding the extracted public transport information and location information. ; An output unit for outputting the information; And a control unit for outputting the information received from the decoder through the output unit, wherein the public transportation information includes a detailed description of the yugo information. have.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

The public transportation information service according to the present invention can be applied to various digital broadcasting standards. Examples of digital broadcasting standards include European Digital Audio Broadcasting (DAB), Digital Video Broadcasting-Terrestrial (DVB-T), Digital Video Broadcasting-Handheld (DVB-H), based on Eureka-147 [ETSI EN 300 401]. MediaFLO (Forward Link Only) in the US and Digital Multimedia Broadcasting (DMB) in Korea. Korean DMB includes Terrestrial Digital Multimedia Broadcasting (T-DMB) based on Eureka-147, and Satellite Digital Multimedia Broadcasting (S-DMB) using satellite communication. In addition, the public transportation information providing service according to the present invention is applied to Wi-Fi, Wibro (Wireless Broadband Internet), and the like, which are wireless Internet.

Hereinafter, the "public transportation information" used refers to the operation status information of the public transportation means. For example, it includes information on the route or waypoints of the train, bus or passenger ship, and the operating time. However, the term indicating the same function is not limited thereto.

Hereinafter, the "preparation information" used refers to information about a notice situation in which an event such as a construction, an event, or a disaster may affect the operation time or route of public transportation. In some cases, it is also called emergency information. However, the term indicating the same function is not limited thereto.

1 is a diagram schematically illustrating a digital multimedia broadcasting system for providing traffic information. A method of providing traffic information as a radio signal with reference to FIG. 1 will now be described.

The digital multimedia broadcasting system includes a network 110 for collecting traffic information-related content, a traffic information providing server 120 for providing the collected content, a broadcasting center 130 and a terminal 140. The traffic information providing server 120 of the broadcaster reconstructs various public transportation information collected from various routes, for example, operator inputs and other servers via the network 110, and thus, various terminals, for example, mobile phones and vehicles. Or, it transmits through the broadcast center 130 so that a receiver mounted on a PDA (Personal Digital Assistant) or other portable terminal can receive. In addition, the terminal may include a computer such as a navigator or a notebook, but is not limited thereto. The other server that collects traffic information may be a server that provides information generated in downtown public transportation.

The traffic information providing server 120 provides the collected traffic information to the broadcasting center 130, and the broadcasting center 130 transmits the received traffic information. The digital broadcasting data channel may be used as a route for transmitting traffic information, but wired or wireless internet may be used, for example, broadband wireless media such as Wi-Fi or wireless broadband (Wibro) or the Internet using a wired cable. In particular, when using a data service of a digital multimedia broadcasting service (DMB), a transparent data channel (TDC) or a multimedia object transport (MOT) protocol of a digital broadcasting medium may be used.

The public transportation information transmitted by the traffic information providing server 120 wirelessly is provided as a component frame. The component frame includes the number of traffic information messages written in the number field and the number field of the message included in the frame. Hereinafter, it is configured to include a sequence of 'Transport Protocol Export Group (TPEG) message'. The traffic information message may include public transportation information, congestion status information, road traffic information, emergency information, and the like. In the present invention, for convenience of description, public transport information (hereinafter, referred to as PTI) is taken as an example, but it can be applied to other information.

The traffic information providing server 120 configures one message segment of the sequence, that is, a TPEG message. FIG. 2 is a diagram illustrating a transport format of a TPEG message configured according to an embodiment of the present invention, focusing on a PTI event container. Referring to Figure 2 describes the configuration of a TPEG message carrying public transport information as follows.

2 is a diagram illustrating a transport format of a PTRA event container configured according to an embodiment of the present invention.

As illustrated in FIG. 2, the TPEG message consists of a message management container 21, a PTI event container 22, and a TPEG location container 23.

The message management container 21 records message identification information (message element), message generation time and message transmission time. The "message element" information is information that can determine whether a subsequent container is a PTI event container. Here, the "message element" information includes a message identifier and a version number, which are required elements included in all messages and are used for message management purposes of the TPEG decoder.

According to an embodiment of the present invention, the message management container 21 includes identification information indicating that a subsequent container is a PTI event container carrying notice information. In addition, the message management container 21 includes information on the generation time of the message is defined based on the world time (UTC). The message management container 21 is recorded with information on the date and time as a reference for the event or status information to start or plan to start. Furthermore, the message management container 21 is recorded with information on the amount of interruption which is thought to occur due to a special event.

The PTI event container 22 is all composed of PTI components.

As illustrated in FIG. 2, the traffic information providing server 120 may include a traffic mode unit in which an identifier is assigned to 0 × A0, 0 × A1, 0 × A2, and 0 × A3, respectively, in the PTI event container 22. 221, a service information unit 222, a message report type unit 223, and an additional information unit 224 are transmitted.

The traffic mode unit 221 carries a value (pti01_7) indicating that a public transportation means, for example, a bus service, and a value (pti27_1) indicating that an instantaneous message is reported in the message report format unit 223. The additional information unit 224 may include, for example, text data of additional description information of the bus management system.

The previously used notation of 'ptiNN_ii' (NN and ii denote numbers) is ptiNN among a plurality of pti tables (or hard-coded tables) stored in the terminal 140. The value ii on the table referred to is a value already promised between the traffic information providing server 120 and the terminal 140. Such a notation method is the same in the following description, and locNN_ii also differs only in that the target table is a loc table which is a location reference table, and the interpretation method is the same as above, and between the traffic information providing server 120 and the terminal 140. It is a table with previously promised values. In the embodiment according to the present invention, the values of the table defined in the TPEG are used, but it is obvious that the present invention is not limited to a specific standard and a table having a newly defined value between the public transportation information provider and the terminal can be used.

The traffic information providing server 120 records, in the service information unit 222, identification information of a target bus, a description of a route, a cause of a notice situation, and information about a progress of a notice situation. The service information unit 222, which carries information on the train route and waypoints, includes a traffic service identifier unit (service information component of the identifier 01 hex) ("Transport Service Identification") 231, as shown in FIG. Part (service information component of identifier 02 hex) ("Service Condition") 232, event cause part (service information component of identifier 06 hex) ("Event Reason") 233, route description part (identifier of 07 hex) Service information component) (" Route Description ") 234, and event progress status unit (service information component assigned with identifier 08 hex) (" Event Phase ").

The traffic service identification unit ("Transport Service Identification") 231 includes a traffic service identifier unit (transport service identification component of the identifier 03 hex) ("Transport Service ID") 241. For example, when the traffic information format is a route ID, "pti14_4" is recorded.

In the service state unit 232, a value (pti13_1 or pti13_3 or pti13_5) indicating whether a service state is changed, delayed or no service is recorded. For example, when there is no service of the corresponding section due to occurrence of the notice situation, "pti13_5" is recorded.

In the event cause section 233, a value indicating what is causing the event, i. First, it indicates whether the cause of the incident is other events ("pti18_1") or human events ("pti18_2"), and in other cases, explosive explosives ("pti19_2") or route blocking ("pti19_16). For example, "pti18_1" and "pti19_16" are recorded when the cause of the detention situation is the interruption of the route due to other events.

The route description section 234 includes a time format section (a route description component of the identifier 02 hex) 251 containing information on the time format.

The time format unit 251 includes a value ("pti16_1" or "pti16_2", or "pti16_0") indicating whether an occurrence time information of a notice situation is planned, predicted or unknown, and an event type. A value ("pti28_3" or "pti28_4") indicating whether it is a time or an event end time is recorded. For example, when the occurrence time of road control is unknown and the occurrence time of the event is 6:30 pm, "pti16_0", "pti28_3", and "18:30" are recorded in the time format unit 251.

Furthermore, the event progress stage (service information component of the identifier 08 hex) ("Event Phase") indicates whether the progress of the noticed situation is an accident discovery ("pti35_1") or a cleanup recovery of the situation ("pti35_3"). The value is recorded. For example, "pti35_3" may be recorded if the current notice situation has been cleaned up.

On the other hand, as illustrated in FIG. 3, the position where the target notice state occurred has been transmitted in the structure of the TPEG location container (PTI component of the identifier 0xB0 hex) 33.

The TPEG location container includes a language code part "331" containing a value for designating a language to be used ("Default Language Code") 331 and at least one location coordinate part ("Location Coordinate") containing a value indicating a location.

A code value (loc41_xx) indicating a language is recorded in the language code unit (“Default Language Code”) 331. In the example of FIG. 3, xx is designated as 65 to indicate “Korean”.

Each position coordinate unit ("Location Coordinate") includes a location type information unit ("Location Type") 341 and a "Mode Type List" (coordinate component of the identifier 00 hex) 342, WGS 84 Location information section ("WGS 84") (coordinate component of identifier 01 hex) (343, 345) of the point and end point of the notice in format (longitude and latitude), and a descriptor ("Descriptor" for the line's point and end point). ") (Coordinate component of the identifier 02 hex) 344, 346.

In the location type information section ("Location Type") 341, a value ("loc01_2" or "loc01_3") indicating whether the type of location information to be transmitted is a point or a route is recorded. For example, "loc01_3" is recorded when the location of the noticed situation is represented by a segment of the road, but "loc01_2" is recorded when the location of the noticed situation is represented by a node.

The mode type list unit 342 indicates the type of public transportation. For example, if the public transportation is a bus, a value loc05_6 indicating this is recorded.

Each descriptor section 344 and 346 is provided with a name or ID for uniquely identifying a starting point or an end point of a location where a notice situation has occurred, and the descriptor type section ("Descriptor") of the preceding section. Type ") 361 and 363 have values (loc03_3 and loc03_4, respectively) indicating that the name or ID shown in each descriptor part (" Descriptor ") 344 and 346 is for the start point and the end point of the location where the detention situation occurred. Is recorded.

If the receiving terminal of the public transportation information includes the latitude and longitude information of the node and / or the section, the coordinate component carrying the latitude and longitude coordinate position is not transmitted.

In FIG. 2, the structure of the PTI event container is shown based on the hierarchical connection relationship between the elements constituting the message. However, the syntax of the specific structure for each element is shown in FIGS. 4A to 4K.

A more detailed description of each syntax is provided below with reference to FIGS. 4A-4K.

As illustrated in FIG. 4A, a pti component carrying information on a traffic mode is assigned an identifier "0xA0 hex" 402, and represents the length of the component data in "n" bytes (404) and uses the TPEG pti01 table. Information 406 about the traffic mode is included. For example, when the transportation mode according to the embodiment of the present invention is a bus service, "pti01_1" is recorded. Since the components to be described later commonly include all the fields 404 representing the length of the component data as "n" bytes, the description thereof will be omitted below.

As illustrated in FIG. 4B, an identifier “0 × A1 hex” 412 is assigned to a pti component carrying service information, and m service information components (“service_information_component”) 414 in which a service information component is recorded are assigned. Included.

The service information component ("service_information_component") includes a service information component, for example, a traffic service identifier (service information component with identifier "01 hex"-illustrated in FIG. 4C), service state (service information component with identifier "02 hex"). 4e), event cause (service information component with identifier "06 hex"-example in FIG. 4f), route description (service information component with identifier "07 hex"-example in FIG. 4g) or event progression step (identifier) Information is recorded for each of the service information component-illustrated in FIG. 4I-"08 hex".

As illustrated in FIG. 4C, a service information component (“service_information_component (01)”) in which the traffic service identifier is recorded is assigned an identifier “01 hex” 422, and m traffic services in which the traffic service identification component is recorded are recorded. An identification component ("transpoer_service_identification_component") 424 is included.

In each transportation service identification component ("transport_service_identification_component"), information on a transportation service identification component, for example, a transportation service ID, an operator name, an operator assistant name, and the like is recorded.

According to the present invention, as illustrated in FIG. 4D, a traffic information format 434 is shown in a traffic service identification component ("transport_service_identification_component") whose traffic service ID is the identifier "01 hex" 432 among the traffic service identification components. It is represented using the code defined in the TPEG table pti 14 as illustrated in 5a. For example, in the case of a route ID, "pti14_4" is loaded, and a 32-bit route ID 436 can be loaded and recorded.

As illustrated in FIG. 4E, an identifier "02 hex" 442 is assigned to a service information component ("service_information_component (02)") in which a service state is recorded, and the service state format 444 is assigned a code defined in the TPEG table pti13. Are recorded.

As illustrated in FIG. 4F, the service information component (“service_information_component (06)”) in which the cause of the event is recorded is assigned an identifier “06 hex” 452, and what the cause of the event is, namely, the event cause type 454. The TPEG table pti18 is recorded, so that the event cause subtype 456 is recorded using the codes defined in pti 19-22.

As illustrated in FIG. 4G, an identifier "07 hex" 462 is assigned to a service information component ("service_information_component (07)") in which information on a route description is recorded, and m route descriptions in which a route description component is recorded. A component ("route_description_component") 464 is included.

As illustrated in FIG. 4H, an identifier "02 hex" 472 is assigned to a route description component ("route_description_component (02)") in which information on a time format among the route description components is recorded, and m time format components ( "time_type_component") 478 is included. The route description component ("route_description_component (02)") records information 474 on whether time information is planned or predicted using a code defined in the pti16 table. For example, if time information is unknown, it is recorded as "pti16_0". In addition, information 476 indicating whether the time information is an event occurrence time or an event end time is recorded using a code defined in the pti28 table. For example, when the time information is the event occurrence time, it is recorded as "pti28_3".

And, as illustrated in FIG. 4I, an identifier "08 hex" 482 is assigned to a route description component ("route_description_component (08)") in which information on an event progression step is recorded. Information 484 indicating whether a notice situation has been found, whether the situation has been confirmed or being repaired or repaired using the code defined in the TPEG table pti35 illustrated in FIG. 6C is shown. The TPEG table pti35 will be described with reference to FIG. 6C.

As illustrated in FIG. 4J, information on the message report format is recorded in a pti component (“pti_component (A2)”) having an identifier “0 × A2 hex” 492. The pti component ("pti_component (A2)") records information 494 on whether the message reporting format is, for example, route information or individual information, using a code defined in the TPEG table pti27. For example, when the message report format is route information, it is recorded as "pti27_3".

As illustrated in FIG. 4K, the additional information is recorded in the pti component (“pti_component (A3)”) having the identifier “0 × A3 hex” 42, by using a code defined in the TPEG table pti30 illustrated in FIG. 6B. Whether the additional information is, for example, Internet information, a telephone number, or detailed information 44 on the notice situation. For example, when the additional information is detailed information on the yugo situation, it is recorded as "pti30_1". In addition, information 46 on the language code is recorded using the TPEG table loc41. For example, when the language code is Korean, it is recorded as "loc41_65". For example, if a user wants to add information indicating that the notice situation is controlled before the ointment, a short string 48 having a content of "no traffic control before the ointment" may be recorded in the component ("pti_component (A3)").

In FIG. 3, the structure of the TPEG location container is illustrated based on the hierarchical connection relationship between the elements constituting the message. However, the syntax of the specific structure for each element is illustrated in FIGS. 5A to 5F.

The TPEG location container ("tpeg_loc_container") includes a field 502 represented using a code defined in the location reference table loc41 (not shown) used for the TPEG location component, as shown in FIG. 5A. For example, in Korean, the code "loc41_65" is recorded. In addition, the TPEG location container ("tpeg_loc_container") includes m TPEG location components ("tpeg_loc_component") 504.

As illustrated in FIG. 5B, the TPEG location component (“tpeg_loc_component (00)”) indicating the location information is assigned an identifier “00 hex” 512 and includes a field indicating the length of the corresponding component data in bytes. In addition, a field 514 indicating a location type using a code defined in the location reference table loc01 (not shown) is included, and m coordinate components (“co-ordinates_component”) 516 are included.

As illustrated in FIG. 5C, an identifier "00 hex" 522 is assigned to a coordinate component ("co-ordinates_component (00)") carrying information on a mode type, and m mode components ("mode_component") 524 are assigned. ) Is included.

As illustrated in FIG. 5D, the mode component (“mode_component (00)”) containing the information on the traffic mode is assigned an identifier “00 hex” 532, and the traffic mode is determined using a code defined in the location reference table loc05. Information 534 on the type of transportation, for example, is a bus or a train. For example, when the transportation mode is a bus, "loc05_6" is recorded.

As illustrated in FIG. 5E, an identifier “01 hex” 542 is assigned to a coordinate component (“co-ordinates_component (01)”) indicating information about position coordinates in the WGS 84 format, and m WGS 84 components ( "WGS84_component") 548 is included. In addition, the coordinate component ("co-ordinates_component (01)") includes a field indicating the longitude 544 and the latitude 546 in units of 10 micro-degrees.

As illustrated in FIG. 5F, a coordinate component (“co-ordinates_component (02)”) containing information on a location where a notice situation occurred is assigned an identifier “02 hex” 552 and a code defined in the location reference table loc03. In operation 554, the location description type is a start point or an end point. For example, "loc03_3" and "loc03_4" are recorded, respectively, when indicating the starting point and the end point of the location where the notice situation occurred. In addition, the coordinate component ("co-ordinates_component (02)") may be recorded as a short string (556) of the location name and includes m description components ("descriptor_component") 558.

As illustrated in FIG. 6A, the TPEG table pti14 defines codes for indicating information on the type of traffic information carried in the transport service identification component (“transport_service_identification_component (01)”) illustrated in FIG. 4D. According to an embodiment of the present invention, since the traffic information type is composed of a route identifier, "pti14_4" 602 may be used.

As illustrated in FIG. 6B, the TPEG table pti30 has defined codes for indicating types of information added to the pti component (“pti_component (A3)”) illustrated in FIG. 4K. Types of additional information may include internet links, telephone numbers, ticket information and notices of notice. According to an embodiment of the present invention, since the description information of the notice situation is loaded, the "pti30_8" 612 may be used.

As illustrated in FIG. 6C, the TPEG table pti35 has code defined to indicate information on an event progress step carried in the service information component (“service_information_component”) illustrated in FIG. 4I. Incident progression steps may include accident discovery, situation identification, reconstruction, and termination. According to an embodiment of the present invention, when the notice situation is collectively recovered, "pti35_3" 623 may be used.

7 is a diagram illustrating an example of a public transportation information message constructed according to the method as described above. The example of FIG. 7 shows a message identification number ("395") and version number ("1") for identifying the message, the accuracy of the message ("4: severe") indicating the accuracy of the message, and the message to the user. A message generation time ("2006-4-5 T18: 30") indicating a predetermined time, and a message generation time ("2006-4-5 T18: 30") indicating a time for generating a message are included (710). ).

In addition, it indicates that the occurrence location of the event "Shinchon Station Donggyo-dong" (720).

And an unknown event occurrence time ("2006-4-5 T11: 30 +07: 00"), a traffic mode indicating that the mode of transportation is a bus (e.g., "bus service"), a route identifier indicating the corresponding route ( For example, "ground line [G] 6716"), a service state indicating the state of the traffic service (for example, "no service"), and the cause of the event (for example, "route blocked") indicating the reason for the incident. , The progress of the event (eg "cleanup") to indicate the progress of the event, the type of message report (eg "report instantaneous messages") to indicate what type of message reporting is being made, Additional information indicating the information (for example, "an ointment before Hongdae bypass operation") and the like are included (730).

Here, the occurrence time of the event as "2006-4-5 T11: 30 +07: 00" is to offset 07:00 to change the world time 11:30 to Korean time.

Therefore, the transmission and reception of the message configured as shown in FIG. 7 is interpreted by the terminal to the user, "There is a traffic regulation due to the connection at 18:30 minutes between Sinchon Station and Donggyo-dong on the route of the branch line [G] 6716. Traffic information is provided.

 FIG. 7 is an extremely simple example presented for convenience of understanding, and the traffic information providing server 120 may, for example, have a notice situation whenever a notice situation may occur in a route or a route of a route. You can provide a message that contains information about.

8 is a block diagram showing the configuration of a terminal for receiving public transportation information.

As illustrated in FIG. 8, the terminal 140 using the received traffic information includes a radio transceiver 802, a demodulator 804, a TPEG decoder 806, a GPS module 812, a controller 822, and an input unit ( 832, LCD driver 842, LCD display 844, storage 852, and the like. The function of each component of the terminal illustrated in FIG. 8 will be described in detail as follows.

The radio transmitter / receiver 802 tunes a signal band provided with public transportation information to output a modulated public transportation information signal to a demodulator 804, and demodulates the modulated public transportation information signal at a demodulator 804 to TPEG decoder. Output to 806, the TPEG decoder 806 decodes the demodulated public transport information signal to obtain various public transport information. The wireless transmitter / receiver 802 may be classified into a broadcasting module for transmitting and receiving a broadcast signal and a wireless communication module for transmitting and receiving a wireless communication signal.

The GPS module 812 receives satellite signals transmitted from a plurality of low orbit satellites to determine the current position (longitude, latitude, altitude), and the storage unit 852 stores an electronic map, various graphic information, and the like. 832 receives input from a user.

The control unit 822 controls the screen output based on the user's input information through the input unit 832 or the current position grasped through the GPS module 812, and the traffic information obtained through the wireless transmitter / receiver 802. do. The LCD display 844 receives a driving signal from the LCD driver 842 according to the text or graphic to be transmitted from the controller and displays it. The input unit 832 may be a touch screen provided on the LCD display 844, or may be a keypad, a jog dial, or a point stick.

The storage unit 852, in addition to the above-described plurality of pti tables and loc tables, basic information according to station identification information (hereinafter referred to as "stop ID") and basic information according to route identification information (hereinafter referred to as "route ID"). It may be storing information. The basic information according to the station ID may include the station ID, the station type, the station name and its length information, the latitude and longitude coordinates, the number of lines passing through the station, and the respective station ID. The basic information according to the station ID includes the line ID and the line name. , Route type, start and end ID, number of stops, first and last train time by stop, and line shape information. The route shape information includes shape points, IDs and latitude and longitude coordinates of each shape point so that the shape is revealed when the road is expressed on VGA or QVGA. In addition, the storage unit 852 may store information on the node ID as basic information. In some cases, an electronic map may be built in the storage unit 852.

The radio transmitter / receiver 802 receives and tunes a signal transmitted from the traffic information providing server 120 through a broadcast channel, and the demodulator 804 demodulates and outputs the tuned signal in a predetermined manner. Then, the TPEG decoder 806 decodes the input demodulation signal into a TPEG message sequence configured as shown in FIG. 2, and then interprets each TPEG message in the sequence to provide necessary information and / or control signals according to the message contents. The controller 822 transmits the data to the controller 822. That is, various information and / or control signals are transmitted from the TPEG decoder 806 to the controller 822. For convenience of explanation, the following description mainly focuses on the TPEG message carrying the notice status information. However, this is for convenience of explanation, it is obvious that it can be applied to various other information.

The TPEG decoder 806 extracts message identification information (message element), message generation time, and message generation time in the message management container of each TPEG message, and a subsequent container is obtained from the information of the 'message element'. Determine whether the message contains the notice situation. Here, the message element information includes a message identifier and a version number, which are required elements included in all messages and are used for message management purposes of the TPEG decoder 806. If the PTI event container, the TPEG decoder 806 transmits the information obtained from the pti component in the PTI event container to the control unit 822 so that a display operation indicating a notice situation to be described later is performed by the control unit 822. The TPEG decoder 806 determines the encoding method of the transit information based on the identification value, i.e., pti27_1 (instantaneous message report) included in the message report type part of the extracted transit information message, and accordingly The structure of the public transportation information contained in the service information is analyzed. For example, it is determined whether the information contained in the service information unit is composed of the time, cause and progress of the situation.

On the other hand, the controller 822 retrieves the PTI event information received from the TPEG decoder 806, and extracts the public transportation information and the notice situation information included in the PTI event information, and stores the information in the storage unit 852 and In addition, the LCD driver 842 is displayed on the LCD display 844. Herein, information on a message occurrence time that designates a time for displaying a message included in a message management container to a user. For example, when a message occurrence time (STA) includes "2006-4-5 T 18:30", 822 may cause the notice information transmitted from the TPEG decoder 822 to be displayed on the LCD display 844 from 6:30 pm on April 5, 2006.

Further, the control unit 822 does not store all data received from the TPEG decoder 806 in the storage unit 852, but is located close to the current position as understood from the GPS module 812, for example, within a radius of 1 km. Alternatively, it is possible to select and store only the data on the notice information generated in the route route passing within a radius of 1 km. This is to efficiently use the storage unit having a limited capacity by selectively storing public transportation information, for example, yugo information, which is predicted even if the user carrying the terminal 140 is most needed. A process of displaying the extracted yugo information on the LCD display 844 will now be described with reference to FIG. 9.

9 is a diagram illustrating a process of displaying public transportation information provided according to an embodiment of the present invention.

First, the controller 822 causes the LCD display 844 to display a menu for searching public transportation information (S902). If a "bus arrival alert" item 91 for informing the arrival time of the bus among the public transportation means is selected in the menu, the submenu is displayed (S904).

When the "stop search" item 92 is selected in the lower menu, an input window 93 for inputting a stop name or a stop neighborhood name stored in the storage unit 852 is displayed (S906). Here, even if the user selects the location of the user by using the GPS module 812 and selects a nearby stop or a route number search showing a nearby stop, the notice information may be displayed. However, for convenience of explanation, only stop search items are mainly described, and may be applied in other cases.

When the desired area name "Voramae Park" is input to the input window 93, the controller 822 reads information on a plurality of stops located around the Boramae Park from the storage 852 and displays the LCD display as a search result. The display can be made at 844 (S908). If the desired stop "Boramae Park Back Gate" item 94 is selected among these, indicator lines 95 and 96 indicating directions along with the bus stop adjacent to the Boramae Park Back Gate stop are displayed (S910).

When one of the direction lines 95 and 96 indicating the direction is selected, an expected waiting time for each corresponding line is displayed (S912). At this time, the control unit 822 may read the route information stored in the storage unit 852, and if there is notice information in the waypoint of the route, the controller 822 may display the notice information as a separate identification mark while displaying the route information. The identification mark may be an asterisk as illustrated in FIG. 9, but is not limited thereto.

When the route 97 with the identification mark indicating the presence information is selected, the controller 822 reads out the corresponding yugo information from the storage unit 852 and displays it on the LCD display 844 (S914). Here, the notice information may include additional information including the time of occurrence of the event, the cause of the event, the progress of the event or the detour of the path. For example, if you read the notice information that the traffic is restricted from Sinchon Station to Donggyo-dong Intersection because of the omission before 6:30 pm, it can be displayed in the window showing the route information and in a separate window (98). have. The window 98 displaying the notice information may be displayed as an OSD (On Screen Display).

 In the configuration of the terminal 140 of FIG. 8, a voice output means may be further provided. In this case, the predicted arrival time when the user selects one stop and one of the lines passing through the stop. (Or a planned arrival time) may be output by voice, or when a route and one stop belonging to the route are selected, the estimated time required for the section may be output by voice. In addition, when there is the notice information, when the user selects the content of the notice information, the content can be output by voice. The speech output means is provided with data necessary for speech synthesis in advance.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, 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. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

As described above, according to the present invention, by providing information on an event, that is, an emergency, that may affect the operation time or route change while providing public transportation information, the user waits for public transportation when using public transportation. Make it possible to use public transportation more efficiently by being able to predict the time to be taken and which line to use. In addition, the provision of such information can reduce the number of self-driving vehicles driving on the road by allowing people to use public transportation more, and further reduce the economic and social costs of road construction or environmental pollution. have.

Claims (21)

In the traffic information encoding method including a traffic information message, Generating public transportation information including notice information generated in the path of public transportation; Generating location information corresponding to the notice information; Generating identification information indicating that the traffic information is public transportation information including the yugo information; And And constructing a message sequence including message segments including the generated information, wherein the public transportation information includes additional information including detailed description of the notice information. The method of claim 1, The additional information includes a code indicating that the additional information is a detailed description of the yugo information. The method of claim 1, And the additional information includes data representing the yugo information in a text format. The method of claim 1, The yugo information includes traffic time encoding method characterized in that the occurrence time of the yugo situation. The method of claim 1, And the yugo information includes a unique identifier for identifying a route of the public transportation means passing through the route where the yugo situation occurred. The method of claim 1, The public transport means is a traffic information encoding method, characterized in that the bus. The method of claim 1, The message segment comprises a message management container, a public transportation event container and a location container. In the method for decoding traffic information comprising a traffic information message, Extracting a message segment carrying public transportation information; Extracting location information corresponding to the notice information and the public transportation information including notice information generated in the path of the public transportation means from the message segment; Extracting identification information indicating that the information contained in the message segment is the notice information from the message segment; And And decoding the extracted public transportation information and location information, and extracting a detailed description of the yugo information from the public transportation information. The method of claim 8, The additional information includes a code indicating that the additional information is a detailed description of the yugo information. The method of claim 8, And the additional information includes data representing the yugo information in a text format. The method of claim 8, The yugo information, traffic information decoding method comprising the occurrence time of the yugo situation. The method of claim 8, The yugo information, traffic information decoding method comprising a unique identifier for identifying the route of the public transportation means passing through the route where the yugo situation occurred. The method of claim 8, The public transport means is a traffic information decoding method, characterized in that the bus. The method of claim 8, The message segment comprises a message management container, a public transportation event container and a location container. An apparatus for decoding a traffic information message, A demodulator for demodulating a received signal and outputting a message sequence carrying public transportation information; A decoder for extracting public transport information including yugo information from each message segment in the message sequence, extracting identification information indicating that the information on the message segment is yugo information, and decoding the extracted public transport information and location information. ; An output unit for outputting the information; And And a control unit for outputting the information received from the decoder through the output unit, wherein the public transportation information includes a detailed description of the yugo information. The method of claim 15, The additional information includes a code indicating that the additional information is a detailed description of the yugo information. The method of claim 15, And the additional information includes data representing the yugo information in a text format. The method of claim 15, The yugo information, traffic information decoding apparatus characterized in that it includes the occurrence time of the yugo situation. The method of claim 15, The yugo information, traffic information decoding apparatus characterized in that it includes a unique identifier for identifying the route where the yugo situation occurred. The method of claim 15, The traffic information decoding apparatus, characterized in that the public transportation means. The method of claim 15, And the message segment comprises a message management container, a public transportation event container, and a location container.

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