KR20080030876A - Apparatus and method for processing telematics contents to be transferred on dmb - Google Patents

Abstract

An apparatus and a method for processing telematics contents and a recording medium for storing the method are provided to shorten a contents-updating period even in a restricted bandwidth, by converting the telematics contents to be adaptive to a DMB(Digital Multimedia Broadcasting) net having the restricted bandwidth and arranging the telematics contents according to the priority order. A receiving unit(220) receives and stores contents obtained through a CP(Contents Provider)(100). A contents-processing unit(240) processes the contents to be adaptive to a DMB net to arrange the contents according to the priority order. A transmitting unit(250) compresses the contents arranged according to the priority order, and transmits the compressed contents to a DMB station(120).

Description

Apparatus and method for processing telematics contents to be transferred on DMB}

1 is a view showing the configuration of an entire system consisting of a content provider (CP), a telematics service provider (TSP), a DMB broadcasting station and a terminal according to the present invention.

2 is a diagram illustrating internal and external functional blocks of a telematics service provider (TSP) according to the present invention.

3A is a block diagram showing a detailed configuration of the DMB telematics content processing unit 240 according to the present invention.

3B is a diagram illustrating a matching table 311 of a node / link scheme and an example of matching thereof.

4 is a flowchart illustrating a process of a method for processing telematics content to be suitable for a DMB broadcasting network according to the present invention.

5 is a diagram illustrating an exemplary embodiment of processing a representative vehicle speed among telematics contents for broadcasting in a content converter according to the present invention.

6 is a view showing a rule definition method for determining the priority of the link ID in providing vehicle speed information in the content priority processor according to the present invention.

7 is a diagram showing an actual implementation of the prioritization rule registration in providing vehicle speed information in the content priority processing system of the present invention.

8 illustrates an embodiment for managing priority rules of the present invention.

9 is a diagram illustrating an embodiment of a transmission policy of encoded broadcast telematics content according to the present invention.

The present invention processes the content to enable various real-time telematics services, such as real-time dynamic route guidance services in the terminal by transmitting the telematics content, such as traffic information, weather information, POI, etc. collected through the content provider (CP) through the DMB broadcasting network An apparatus and a method thereof are provided.

Recently, due to the remarkable development of mobile communication technology, the vehicle environment, which has been disconnected from the outside, can use various telematics services through WLAN and CDMA off-board wireless communication devices. In addition, the telematics service users want to receive real-time information through a mobile communication network, rather than using the information stored in the terminal in the representative telematics service route guidance service, location-based services and entertainment services offline. In addition, DMB broadcasting enables stable and high-quality digital video / audio / data services even in high-speed moving bodies such as vehicles, and the movement to converge them with telematics is rapidly developing.

In the present invention, among the telematics contents provided through the existing CDMA communication network, traffic information, weather information, surveillance camera location information, POI, and the like, are targeted to contents that can be commonly used by unspecified users. When the telematics contents are provided through the existing CDMA communication network, personalized and only necessary information is received, so that the customized telematics service is possible.However, in order to provide such services, a communication for a telematics terminal is provided separately from a mobile phone carried by an individual. The problem is that the module must be purchased and maintained. In addition, due to frequent communication with the Telematics Service Center (TSP) and download of contents in order to receive telematics services, the burden on the communication fee of data is increasing.

Since conventional CDMA bidirectional communication basically assumes a TCP / IP connection, the traffic generated when multiple users are accessed at the same time should be considered. Thus, the telematics service center increases the cost of building and maintaining the system in the center. Therefore, for low cost telematics service, it is necessary to diversify the communication channel and select the communication channel according to the characteristics of the contents. For example, while personalized services use existing CDMA broadcasts, it is preferable to transmit contents through which the user is expected to use them in common, such as traffic information and weather information, through a broadcasting network. However, if the vehicle passes through the shaded area, the two-way communication can be retransmitted after the interruption. However, since the DMB broadcasting network is based on communication, such a mechanism cannot be implemented. Therefore, in the broadcasting network, the same data is retransmitted several times at regular intervals, but the reception rate is improved.

In order to transmit telematics content through a DMB broadcasting network, a data service channel is used. However, data service channels are relatively stingy in allocating bandwidth to data service channels, as data service channels are not expected to generate more benefits than existing video / audio channels. In addition, if the country includes weather information, POI, and traffic information on all roads, the amount of telematics contents for broadcasting is not only enormous, but considering the retransmission of the contents in broadcasting, the update period of the contents becomes infinitely long to provide to the broadcasting network. . Therefore, there is a demand for broadcasting telematics content processing, processing, and transmission technology that can satisfy most users with limited broadcasting bandwidth.

The technical problem to be achieved by the present invention is to solve the above problems, the telematics content suitable for the broadcasting network, such as large-capacity traffic information, weather information collected through the content provider (CP) through a low-bandwidth DMB data broadcasting network It is an object of the present invention to provide an apparatus and a method for processing the apparatus suitable for broadcasting in real time.

In order to achieve the above technical problem, the telematics content processing apparatus for transmitting through the DMB according to the present invention includes a receiving unit for receiving and storing the content obtained through the content provider (CP); A content processing unit for processing the content to be suitable for a DMB broadcasting network and sorting the content according to a predetermined priority; And a transmitter for compressing the contents arranged in the order and transmitting the compressed contents to the DMB broadcasting station.

In order to achieve the above technical problem, the telematics content processing method for transmitting through the DMB according to the present invention comprises the steps of receiving and storing the content provided by the content provider (CP); Providing a mapping table for specifying an association relationship between link IDs required for telematics content conversion; Processing the content to be suitable for a DMB broadcasting network with reference to the mapping table and sorting the content according to a predetermined priority; And compressing the contents arranged in the order and transmitting them to a DMB broadcasting station.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a view showing the configuration of an entire system consisting of a content provider (CP), a telematics service providing apparatus (TSP), a DMB broadcasting station, and a terminal according to the present invention.

The entire system includes a content provider 100, a telematics service providing apparatus 110, a DMB broadcasting station 120, and a DMB terminal 130.

The content provider 100 may acquire traffic information (vehicle speed, road surface information, traffic volume, etc.), notice information (event, construction, accident, etc.), weather information, POI acquired through a loop detector on a road on which a vehicle travels, a traffic camera, and the like. It provides a telematics content (hereinafter referred to as "broadcast telematics content") suitable for broadcasting, such as gas station price information, parking information, surveillance camera location information.

The telematics service providing apparatus 110 processes, stores, updates, and transmits the information collected from the content provider 100 to fit the DMB broadcasting network, and transmits the information to the DMB broadcasting station 120.

The DMB terminal 130 receives broadcasting telematics contents through the broadcasting network of the DMB broadcasting station 120 and provides various telematics related services such as real-time dynamic route guidance service and weather information service by reflecting the received information.

2 is a diagram illustrating internal and external functional blocks of a telematics service provider (TSP) according to the present invention. The telematics content receiving unit 220 receives the telematics content for broadcasting from the traffic information providing system 200, the weather information providing system 210, and the like provided in the content provider CP. This information is stored in its own content database. The content stored includes vehicle speed, road surface information, traffic volume, accidents, events, weather information, POI, gas station price information, parking information, surveillance camera location information, and the like.

The DMB telematics content processing unit 240 processes the stored content from the content database 230 in real time by constructing a separate DMB node / link system to generate a DMB broadcasting network. The generated telematics content for the DMB is transmitted from the transmitter 250 to the DMB transmission system 120 using an existing standardized protocol such as HTTP, FTP, and socket. The DMB transmission system finally provides telematics content for broadcasting to a terminal user through a wireless broadcast transmission device.

3A is a block diagram showing a detailed configuration of the DMB telematics content processing unit 240 according to the present invention. Each content received and stored by the telematics content receiver 220 is converted into a DMB node / link system by the content converter 300. The DMB node / link scheme is generally less detailed than the navigation node / link scheme installed in the terminal and is constructed in consideration of the area and amount of data to be collected. Therefore, among the contents provided from the content provider 100, contents requiring node / link system conversion in relation to the road position, such as vehicle speed and yugo information, are automatically converted into location information through the content conversion unit 300 so that the DMB node / It will be created as a link system. The node / link scheme matching table 310 has association information between link IDs that can convert the day provided by the content provider 100 according to the node / link scheme for the DMB. Here, the link ID refers to a road number of a road section in which traffic information is collected. The association between link IDs is mainly composed of DMB to content provider 100 in a 1: 1 or 1: M format. The 1: 1 relationship is directly reflected as the mapping relationship, whereas in the case of 1: M, the relationship is converted using the road attribute between adjacent link IDs. Here, 1: 1 means that one link ID of the content provider 100 is mapped to one DMB link ID, and 1: M is one link MB of the content provider 100 to one DMB link ID. ) To be mapped.

Broadcast telematics contents, such as weather information 330, notice information 340, and vehicle speed 350, which are converted and output by the content converter 300, respectively, are prioritized between contents and the contents through the content priority processor 360, respectively. The rankings are considered simultaneously to determine the priority of each content. The priority classification of the priority processing unit 360 may be divided into areas, lane numbers, road types, importance, yugo severity, and the like. For example, the area, the number of lanes, the type of road, etc. for the link may be applied for the vehicle speed information, and the yugo severity for the link may be additionally applied in addition to the notice information. The encoder 370 combines each content by priority and automatically cuts and generates the content when the size exceeds the predetermined size required by the DMB transmission system, and generates and stores the remaining part as an additional file (395). For all generated files, a retransmission policy 390 for each file is generated and stored. The files generated by the encoder 370 are respectively compressed through a compression algorithm.

3B shows a matching table 311 and matching embodiment of a node / link scheme in the present invention. The matching table 311 of the node / link system shows a matching relationship between the link ID of the node / link system used in the content provider 100 and the link ID of the node / link system used for the DMB. The relationship between the content provider 100 node / link scheme 312 and the DMB node / link scheme 313 is illustrated using an example map of the matching table 311 of the node / link scheme. In the example of FIG. 3B, it can be seen that the link ID of the DMB link ID 1000 matches the 100 and 102 times of the content provider 100, and this part has a 1: M relationship. In addition, the DMB link IDs 1002 and 1003 are matched with 104 and 105 of the content provider 100 link ID, respectively, to show a 1: 1 relationship.

4, the content processing method according to the present invention will be described. 4 is a flowchart illustrating a process of a method for processing telematics content to be suitable for a DMB broadcasting network according to the present invention. First, the content provider (CP) receives and stores the content (step 410). In addition, a mapping table for designating a correlation between link IDs required for telematics content conversion in order to convert content to DMB broadcasting is suitable (step 420). The association relationship herein refers to a matching relationship between a link before conversion and a link converted to be suitable for DMB broadcasting corresponding to the link. Next, the processing and sorting process is performed. First, when a node / link scheme is required for the road among the contents provided by the content provider, it is converted into a DMB node / link scheme, and the priority between the contents or within the contents is changed. The content is sorted according to operation 430. Priority is determined based on information including area, lane number, road type, road importance, and road name. Then, the sorted content is generated into a file corresponding to the size required by the DMB broadcasting station, and the excess portion is generated and stored as a separate file, and then the compressed files are compressed and transmitted to the DMB broadcasting station by applying a compression algorithm ( Step 440). At this time, when transmitting in the form of a file, it is divided into sizes suitable for DMB broadcasting, and each of the divided files has the same priority and the same transmission speed (see FIG. 9).

A more detailed example will be described in detail with reference to FIGS. 5 to 9.

FIG. 5 illustrates an exemplary embodiment in which a content conversion unit according to the present invention performs processing for a representative vehicle speed among broadcast telematics contents, and FIG. 6 illustrates priority of a link ID in providing vehicle speed information in a content priority processing unit according to the present invention. A diagram illustrating a rule definition method for ranking. 7 is an actual embodiment for determining link ID and priority in providing vehicle speed information in the content priority processor of the present invention, and FIG. 8 shows an embodiment for managing priority rules of the present invention. 9 is an embodiment of a transmission policy of encoded broadcast telematics content according to the present invention.

First, reference is made to FIG. 5. 5 shows an embodiment of processing a representative vehicle speed among telematics contents for broadcasting in the content conversion system of the present invention.

The content conversion unit 300 first receives a DMB link ID to be converted (step 510). The link ID associated with the DMB link ID is searched through the content database 230, and the vehicle speed corresponding thereto is searched (step 520). Next, it is checked whether the searched link ID and the DMB link ID have a 1: 1 mapping relationship (step 530). If the relationship is 1: 1 mapping, it is stored as the vehicle speed of the DMB link ID without conversion (step 530). However, in the case of 1: M, it is first checked whether there is a link ID in a state in which there is no data (hereinafter, referred to as “missing”) because it cannot collect vehicle speed among the searched link IDs (step 540). If not, the speed of the DMB link ID is multiplied by the speed in proportion to the length of each road of the searched link and is generated as in Equation 1 (step 570).

는 DMB용으로 가공된 새로운 속도이고,

은 원래 링크의 총 길이이며,

는 변환전 링크의 속도이다. 그리고 변환전의

는 각 링크의 길이이다.here,

Is the new speed processed for DMB,

Is the total length of the original link,

Is the speed of the link before conversion. And before conversion

Is the length of each link.

If all the regions to be converted are missing, the calculation is regarded as total missing, but if there are some missing, the length of the link ID is newly adjusted in proportion to the length of each road of the link for the remaining link ID except the missing region. Will be recreated. Then, using the length and the speed of the regenerated link ID to generate a speed through the speed calculation of the length ratio as shown in Equations 2 and 3 (steps 550 to 56).

은 결측 링크의 길이이다. 그리고

과

는 위에서의 정의와 같다.Where M is the total length of the missing link,

Is the length of the missing link. And

and

Is the same as the definition above.

6 shows a rule definition method for determining the priority of the link ID in providing vehicle speed information in the content priority processing system of the present invention.

The priority classification criteria of the priority processor 360 may include a region, the number of lanes (one lane, two lanes, etc.), a road type (general road, an overpass, an underground road, a bridge, a tunnel, and the like), and road importance. In the example of determining the priority illustrated in FIG. 6, it may be divided into a priority determination rule 600 and a priority determination 670. First, the user inputs the priority determination rule 600 and the priority according to the rule, respectively, and registers the priority determination rule 600 and the priority value as a pair to build one rule database. Thus, if any road to be transmitted corresponds to each prioritization rule 600 condition in the database where the rules are registered, the corresponding priority is set. The rule application method is that the latest registration rule takes precedence over the previously registered rule. Looking at the prioritization rule 600, the comparison by the operator 660 set for the local value 610 and the designated area value 611 of the link, the player of the link 620 and the designated player 621 Comparison with the operator 660 set for the link, the road type 630 of the link and the operator 660 set for the designated road type 631, the road importance 640 and the designated road importance of the link. The comparison is performed by the operator 660 set for 641 and the operator 660 set for the road name 650 of the link and the designated road name 651. Each result is then grouped using a logical AND operator 680 to see if the link satisfies the entire rule. If the link satisfies a given rule, the link is assigned a priority corresponding to the rule (670). In addition, the prioritization rule should include at least one of the classification criteria (region, lane number, road type, road importance, road name). When two or more criteria are included in the prioritization rule, the logical AND operator 680 is used to generate the rule.

7 shows an example of the actual implementation of the prioritization rule registration in providing vehicle speed information in the content priority processing system of the present invention.

Speed priority setting screen 700 for priority registration is rule name 710, setting item 720, setting detail item 730, filter criteria 740, priority 750, operation rule 760. It consists of. The rule name 710 is for creating a new name for specifying the priority 750 rule. The setting item 720 may include a region, the number of lanes, a road type, a road importance, a road name, etc. The setting detail item 730 refers to a detail item for the setting item 720. The speed priority setting screen 700 shows the actual classified road names according to the road names and allows the user to set them. The filter criterion 740 allows a logical comparison to the designated setting item. When the final calculation rule 760 is completed, the speed criterion is determined by inputting the priority in the priority 750 for the rule. Register a rule for The final operation rule 760 corresponds to one embodiment of the priority determination rule 600.

8 shows an embodiment for managing priority rules of the present invention.

Priority management 800 shows a list of priority rules in a pre-registered database, and manages priority rules for traffic information, and registers (830), modifies (840) and deletes (850) each rule. Is possible. The management items may be vehicle speed, yugo, weather, and the like. 8 shows an embodiment showing the vehicle speed and the yugo. The priority rule list 810 shows registered speed priority rules, and the lower the sequence number is the latest registered rule. Therefore, the priority processing unit 360 applies the rules in the top-down form while applying the priorities from the lower order so that the priorities are not applied. Each rule may also change the order of existing registered rules using the rule order change 820.

9 illustrates an embodiment of a transmission policy of encoded broadcast telematics content according to the present invention.

In DMB data broadcasting, streams or files can be sent for data transmission. Although any one of the two methods may be used, the present invention will be described in the present invention because the transmission in the form of a file is relatively easy to be processed by the transmitting apparatus or the terminal.

See FIG. 9. The content of the transmission policy is composed of a file name 900 for the file generated by the priority processor 360 and the encoder 370, a file priority 910, and a transmission speed 920. The number of retransmissions of the file is determined according to the actual update period and the transmission rate 920 of the file. Contents classified by priority are automatically cut off when the content is classified by a predetermined size through the encoder 370. In this case, as shown in FIG. 9, a file having the same priority may be generated, and the transmission speed may have the same transmission speed according to the priority.

The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the appended claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

As described above, a method and a device for processing telematics content for transmission through DMB according to the present invention converts telematics content including national unit traffic information and weather information to be suitable for DMB network in a DMB network having a limited bandwidth. By prioritizing content by contents, it is effective to shorten the content update period by shortening the transmission period even for a limited bandwidth for the high priority information that most people need. In addition, by efficiently adjusting and managing the retransmission period of the content by priority, it is possible to improve the reception rate of unidirectional communication according to the shadow area while moving.

Claims (16)

Receiving unit for receiving and storing the content obtained through the content provider (CP); A content processing unit for processing the content to be suitable for a DMB broadcasting network and sorting the content according to a predetermined priority; And And a transmission unit for compressing the content arranged in the order and transmitting the compressed content to a DMB broadcasting station. The method of claim 1, wherein the content is Vehicle speed, road surface information, traffic information including traffic volume, yugo information including construction status, weather information, POI (Point Of Service) information, gas station price information, parking information, surveillance camera location information, including Telematics content processing device for transmission via DMB. The method of claim 1, wherein the content processing unit A content conversion unit for converting a node / link scheme in relation to a road from among contents provided by the content provider to a DMB node / link scheme; A mapping table for providing a correlation between the link IDs necessary for the conversion to the content conversion unit; A priority processor for sorting the contents according to the priority among the contents or within the contents; An encoder for generating the sorted contents in a file corresponding to a size required by the DMB broadcasting station, and generating and storing the sorted content in a separate file; And And a compression unit configured to compress the generated files by applying a predetermined compression algorithm to the generated files. The method of claim 3, wherein the content conversion unit A search unit which receives a DMB link ID and checks the link ID in a mapping relationship by searching the mapping table, inquires a corresponding vehicle speed, and then checks a correlation between the searched link ID and the DMB link ID; If the correlation is 1: 1, the vehicle speed is stored at the speed of the DMB link ID, and if 1: N, the presence or absence of a missing section is determined, and if there is a missing section, each link length for road links except the section is found. A first transform unit performing a linear transformation according to a linear transform and performing a calculation such that the total sum is the length of the DMB link ID; And And a second converting unit converting the link length ratios into speeds corresponding to the DMB link IDs. The method of claim 3 or 4, wherein the correlation A telematics content processing device for transmitting over DMB, characterized in that it represents a distance ratio of the link before conversion and the link converted to be suitable for DMB broadcasting corresponding to the link. The method of claim 3, wherein the priority processing unit Telematics content processing device for transmission over DMB, characterized in that the priority is determined based on information including area, lane number, road type, road importance, road name. The method of claim 1, wherein the transmitting unit Telematics content processing apparatus for transmitting through the DMB, characterized in that for transmitting the content in the form of a stream or file. The method of claim 7, wherein When transmitting in the form of a file, the file is transmitted according to a transmission policy consisting of a file name, a priority of the file, and a transmission rate, and the files divided by the encoder have the same priority and the same transmission rate. Telematics content processing device for transmission via DMB. (a) receiving and storing content provided by a content provider (CP); (b) providing a mapping table for specifying an association relationship between link IDs required for telematics content conversion; (c) processing the contents to be suitable for a DMB broadcasting network with reference to the mapping table and sorting the contents according to a predetermined priority; And and (d) compressing the contents arranged in the order and transmitting the compressed contents to a DMB broadcasting station. The method of claim 9, wherein the content is Vehicle speed, road surface information, traffic information including traffic volume, yugo information including construction status, weather information, POI (Point Of Service) information, gas station price information, parking information, surveillance camera location information, including Method for processing telematics content for transmission over DMB. The method of claim 9, wherein step (c) (c1) converting a node / link scheme into a DMB node / link scheme in a case where a node / link scheme is required for a road among contents provided by the content provider; (c2) arranging contents according to the priority among the contents or within the contents; (c3) generating the sorted content as a file that is suitable for the size requested by the DMB broadcasting station, and generating and storing the excess content as a separate file; And (c4) compressing by applying a predetermined compression algorithm to the generated files; telematics content processing method for transmitting via DMB. The method of claim 11, wherein step (c1) (c11) receiving a DMB link ID, checking a mapping table in a mapping relationship by searching the mapping table, checking a corresponding vehicle speed, and then checking a correlation between the searched link ID and the DMB link ID; (c12) storing the vehicle speed at the speed of the DMB link ID when the correlation is 1: 1; (c13) If the correlation is 1: N, it is determined whether there is a missing section, and if there is a missing section, the linear link is transformed according to each link length except for the missing section, and the total sum of the lengths of the DMB link IDs is Computing to perform; And and (c14) converting each link length ratio as a weight to a speed suitable for the DMB link ID. The method of claim 9 or 12, wherein the correlation A method of processing telematics content for transmission over DMB, characterized in that it represents a distance ratio of a link before conversion and a link converted for DMB broadcasting corresponding to the link. 12. The method of claim 10 or 11, wherein the priority is A method of processing telematics content for transmission through DMB, characterized in that it is determined based on information including region, lane number, road type, road importance, road name. The method of claim 9, wherein step (d) When transmitting the processed content in the form of a file, the telematics content for transmission through DMB is divided into sizes suitable for DMB broadcasting, and each divided file is transmitted with the same priority and the same transmission speed. Processing method. (a) receiving and storing content provided by a content provider (CP); (b) providing a mapping table for specifying an association relationship between link IDs required for telematics content conversion; (c) processing the contents to be suitable for a DMB broadcasting network with reference to the mapping table and sorting the contents according to a predetermined priority; And and (d) compressing the contents arranged in the above order and transmitting them to a DMB broadcasting station. A computer program recording a program capable of executing a telematics content processing method for transmitting through a DMB on a computer may be read. Recording media.

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