KR100775156B1 - Method for generating broadcasting signal for providing traffic data and Method for providing traffic data - Google Patents

Abstract

The present invention inserts and transmits a traffic information provision table (TIT) into a program and system information protocol (PSIP) defined for digital broadcasting, and a user can obtain traffic information in real time without encountering data broadcasting and traffic broadcasting. Can be.

Digital Broadcast Receiver, PSIP, Traffic Information, Broadcast Signal

Description

Method for generating broadcast signal for providing traffic information and providing traffic information in digital broadcasting receiver {Method for generating broadcasting signal for providing traffic data and Method for providing traffic data}

1 is a conceptual diagram illustrating a method for providing traffic information using a TV signal according to the present invention.

2 is a view showing a structure of a PSIP added traffic information according to the present invention.

FIG. 3 is a diagram illustrating a traffic information providing table (TIT) syntax structure shown in FIG. 2; FIG.

Figure 4 is a block diagram schematically showing the configuration of a TV capable of providing traffic information according to an embodiment of the present invention.

5 is a flowchart illustrating a method of outputting traffic information by a TV according to the present invention.

6 is a flowchart illustrating a method of outputting traffic information requested by a user while watching TV according to the present invention.

7 is a view showing a user information setting screen according to the present invention.

8 is a block diagram schematically showing the configuration of a TV capable of providing traffic information according to another embodiment of the present invention.

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

100: traffic information providing center 110: broadcasting station

120: TV 400, 800: tuner

410, 810: demodulator 420, 820; Demultiplexer

430, 830: audio decoder 440, 840: video decoder

450, 850: video processing unit 460, 860: additional information processing unit

470, 870: control unit 480, 880: key input unit

490, 890: storage 900: communication module

The present invention relates to a broadcast signal generation method for providing traffic information that enables a user to receive traffic information without encountering data broadcasting and traffic broadcasting, and a traffic information providing method in a digital broadcast receiver.

Due to the development of digital TV technology, the advanced technology such as HD video and Dolby Digital's voice have been experienced, and with the continuous development of compression algorithms and high performance of hardware, we will have a better environment in the future.

In addition to video and audio, which are inherent functions of TVs, digital TVs provide various additional services, and a representative example thereof is broadcasting information.

The countries that adopted the Advanced Television System Committee (ATSC) as the digital broadcasting standard are the United States, Korea, and Canada. The ATSC defines a standard called PSIP (Program and System Information Protocol) to search for a desired channel and find audio and video transmitted in the channel, in addition to the standard for audio / video encoding and decoding. The PSIP is a standard for transmitting additional information including information necessary for viewing a digital TV established by an American ATSC organization.

That is, PSIP defines EPG (Electronic Program Guide) and SI (System Information) as one. The PSIP is an ATSC standard for terrestrial and cable digital broadcasting, and is defined to provide various information about a program by parsing messages encoded by the method of MPEG-2.

Based on the MPEG-2 specification, all tables defined in the PSIP follow the private section syntax.

The PSIP consists of several tables for transmitting and receiving A / V data in MPEG-2 video and AC-3 audio formats, and transmitting information about channels of each broadcasting station and information about each program on the channel. . The PSIP may support a navigation function for selecting a channel and providing an A / V service of a desired broadcast and an EPG for a broadcast program, that is, an additional function for providing a broadcast guide service.

In addition, through data broadcasting, digital TVs can provide users with more value-added services such as news, weather, traffic, and securities.

However, in order to receive such services, digital TVs and set-top boxes with built-in data broadcasting functions must be available, which is impossible with existing hardware and software.

In addition, even if the data broadcasting function is built in, it is inconvenient to take some time to receive a large amount of data.

Accordingly, an object of the present invention is to provide a broadcast signal generation method for providing traffic information in which a user can obtain traffic information in real time without encountering data broadcast and traffic broadcast, and a traffic information provision method in a digital broadcast receiver.

According to an aspect of the present invention to achieve the above object, a broadcast signal generation method for providing traffic information, characterized in that for transmitting by inserting a traffic information providing table (TIT) in the program and system information defined for digital broadcasting This is provided.

The traffic information providing table includes a table_Id indicating a table identifier, a version_number indicating a version value, an indicator indicating the number of roads defined in the table, and a loop that provides traffic information of each road. An indicator indicating the number of roads defined in the table is used, for example, num_of_road_in_table is used, and an iteration for providing traffic information of each road is used, for example, a 'for' loop loop.

The traffic information providing table (TIT) is generated by using traffic information provided from a traffic information providing center, and the traffic information providing table (TIT) inserted into the program and system information protocol is transmitted together with an audio / video signal. .

According to another aspect of the present invention, when a broadcast signal is received from a broadcasting station, the broadcast signal is divided into audio, video, and additional information signals, and the traffic information provision table is parsed from the separated additional information to extract traffic information, Provided is a method for providing traffic information in a digital broadcasting receiver, which outputs the extracted traffic information according to user setting information preset by a user.

The user setting information includes road information for requesting traffic information, output time information for outputting traffic information, and an output method for outputting traffic information.

According to another aspect of the present invention, when a traffic information request command is input by a user during a program broadcast, the traffic information request screen is displayed, the traffic information request information is received from the user through the traffic information request screen, and stored. A traffic information providing method is provided in a digital broadcasting receiver, which extracts and outputs corresponding traffic information according to the stored traffic information request information.

The traffic information request screen is output in an OSD form, and the traffic information request information includes road information for requesting traffic information, output time information for outputting traffic information, and an output method for outputting traffic information.

According to another aspect of the present invention, if a traffic information request command is input by a user during program broadcasting, check whether user setting information preset by the user is stored, and if the user setting information is found, the user setting. Provided is a method for providing traffic information in a digital broadcasting receiver, which extracts and outputs corresponding traffic information according to the information.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram illustrating a method for providing traffic information by a TV according to the present invention.

Referring to FIG. 1, the traffic information providing center 100 transmits traffic information changing in real time to the broadcasting station 110 at predetermined time intervals.

The broadcasting station 110 includes the traffic information provided by the traffic information providing center 100 in the broadcast signal and transmits the same to the TV 120. That is, the broadcasting station 110 creates a traffic information table (TIT) by using the traffic information transmitted from the traffic information providing center 100, and transmits the created traffic information table (TIT) to the PSIP. In addition, the audio / video stream is transmitted to the TV 120. The PSIP to which the traffic information provision table (TIT) is added will be described in FIG. 2.

The TV 120 divides the broadcast signal transmitted from the broadcasting station 110 into audio, video, and additional information, and extracts and stores traffic information from the separated additional information. That is, the TV 120 extracts the traffic information provision table (TIT) from the additional information, that is, the PSIP, and subtitles, voice, Output in the form of OSD (On Screen Display).

Then, the user can check the traffic information of the desired road or the entire road while watching the TV 120 in real time or at the desired time.

FIG. 2 is a diagram illustrating a structure of a PSIP to which traffic information is added according to the present invention, and FIG. 3 is a diagram showing a structure of a TIT syntax shown in FIG. 2.

Referring to FIG. 2, the PSIP transmits and receives A / V data made in MPEG-2 video and AC-3 audio format, and transmits information about channels of each broadcasting station and information about each program of channels. Consists of

PSIP according to the present invention is a system time table (STT), a rating region table (RTT), a master guide table (MGT), a virtual channel table (VCT), an event information table (ETT), an extended text table (ETT) and a TIT. Consists of. Here, STT, RRT, MGT, VCT, EIT, ETT is the same as the configuration of the existing PSIP, TIT is added to provide traffic information. The TIT is a table made by a broadcasting station using traffic information provided from a traffic information providing center.

The MGT establishes a relationship between the other tables constituting the PSIP and allocates the size of memory required for the PSIP while the TV decodes and manages the version and PID of each table.

The VCT delivers channel information for channel selection and packet identification number for receiving A / V. Therefore, when the VCT is parsed, the PID of the audio and video of the broadcast program loaded in the channel can be known along with the channel name and the channel number.

The EIT transmits EPG information of broadcast programs of each channel.

The ETT is for additional description of a channel and a broadcast program, and is inserted into and used in an EIT and a VCT, respectively.

The RRT is for transmitting information about a region and a review institution for a program grade.

The STT transmits information about time and date, and time difference between GPS time and UTC time.

The TIT provides traffic information that changes in real time.

Here, since the STT, RRT, MGT, VCT, EIT, and ETT are the same as the existing configuration, the description of the syntax structure is omitted, and the syntax structure of the TIT will be described. The syntax of the TIT is configured as shown in FIG. 3.

Referring to FIG. 3, the TIT includes a table_Id indicating a table identifier, a version_number indicating a version value, a num_of_road_in_table indicating a number of roads defined in the table, and a 'for' loop loop providing traffic information of each road.

The table_Id is a field for identifying the TIT in the MGT, and the TV determines whether it is a traffic information providing table using the table_Id.

The version_number indicates a version of the currently provided TIT, and the TV compares the previously stored traffic information with the version using the version_number to provide a higher version of the traffic information.

The 'for' loop loop provides speed information and congestion information for each road.

Looking at the loop of the 'for' loop in more detail, the 'for' loop loop is a first 'for' loop loop for providing road information, the speed information of the road defined in the first 'for' loop loop When the speed of the road provided by the second 'for' loop loop and the second 'for' loop loop is congested, the second 'for' loop is composed of a loop of the third 'for' loop providing congestion section information.

The first 'for' loop loop is a road_type indicating a type of a road such as a highway, a national road, a local road, a road_number indicating a unique number of a road, a road_name_length indicating a total length of a road name, a road_name indicating a road name, and a second 'for It consists of a 'loop loop' and a third 'for' loop loop.

The second 'for' loop loop includes a direction indicating directions of the road in both directions, an up-down direction, a left-right direction, and the like, an average_speed indicating an average speed of the corresponding road, a num_of_jam indicating a number of congestion sections on the corresponding road, and a third ' It consists of a for 'loop loop.

The third 'for' loop loop includes start_area_name_length representing the length of the congestion start section name, start_area_name representing the congestion start section name, end_area_name_length representing the length of the congestion end section name, end_area_name representing the congestion end section name, and speed of the congested section. It is composed of speed.

As described above, the TIT provides traffic information of each road through a loop for 'for' loop.

Therefore, the TV can know the speed and congestion of each road by the 'for' loop loop constructed as described above, and in the case of a congested road, the congestion section and its speed.

In addition, when the user inputs the name of the road for which the user wants traffic information, the TV extracts the input road from the 'for' loop loop and determines the speed information and the congestion section of the road. Outputs the congestion section and the speed of that section.

The TIT configured as described above is included in the PSIP and transmitted to the TV, and the TV extracts and outputs traffic information from a broadcast signal by a real time or a user's request.

A TV for extracting and outputting traffic information from a broadcast signal as described above will be described in detail with reference to FIG. 4.

4 is a block diagram schematically showing the configuration of a TV capable of providing traffic information according to an embodiment of the present invention.

Referring to FIG. 4, a TV capable of providing traffic information includes a tuner 400 for tuning a channel selected by a user, demodulating a signal tuned by the tuner 400, correcting an error, and converting the signal into a transport stream form. Demodulator 410, demultiplexer 420 for demultiplexing the time-multiplexed transport stream into video, audio, and additional information signals, and decompressing and restoring the audio signal separated from the demultiplexer 420 The audio decoder 430 converts the video signal to be output through the video decoder, the video decoder 440 for extending / reconstructing the video signal separated by the demultiplexer 420, and displays the video signal output from the video decoder 440 on the screen. The video processing unit 450 converts the brightness and color signals to be possible, and the additional information processor analyzing the additional information signal separated by the demultiplexer 420. The unit 460, a key input unit 480 for inputting a user's desired command, a control unit 470 for performing overall control of the TV, for storing and extracting necessary information according to the control signal of the control unit 470 The storage unit 490 is included.

The video processor 450 converts the signal output from the video decoder 440 and the OSD signal output from the storage to be displayed on the screen. That is, when the user wants traffic information of a real road or a specific road, the video processor 450 displays the traffic information of the corresponding road output from the storage unit 490 on the screen.

The additional information processor 460 parses and decodes each table from the additional information signal separated from the demultiplexer 420, that is, the PSIP. In this case, the additional information processing unit 460 may determine the corresponding table by using the table_Id defined in each table of the PSIP, and thereby determine whether traffic information is provided.

If the TIT exists in the table decoded by the additional information processor 460, the controller 470 controls the traffic information of the corresponding road to be output in the form of voice, subtitles, or OSD according to a request of a user in real time. That is, when the traffic information request command is input through the key input unit 480, the controller 470 controls the traffic information of the corresponding road to be output according to the user setting information.

The storage unit 490 stores traffic information analyzed by the additional information processor 460.

In addition, the storage unit 490 stores user setting information input by a user for providing traffic information. The user setting information includes road information for traffic information, output time information for outputting traffic information, and an output method for outputting traffic information.

Therefore, the traffic information stored in the storage unit 490 is output according to the user setting information.

Hereinafter, a method of outputting traffic information in a TV configured as described above will be described.

When a broadcast station transmits a broadcast signal including traffic information to the TV, the broadcast signal is transmitted to the demultiplexer 420 through the tuner 400 and the demodulator 410.

The demultiplexer 420 separates the received broadcast signal into audio, video, and additional information. The audio signal is output through the audio decoder 430, and the video signal is output through the video decoder 440 and the video processor 450.

The additional information is analyzed in detail by the additional information processing unit 460. The additional information processing unit 460 stores the traffic information when the traffic information providing table (TIT) exists in the analyzed additional information. Store at 490.

At this time, the controller 470 checks whether user setting information for providing traffic information is set in the storage 490. If the user setting information is set as a result of the checking, the controller 470 extracts the traffic information corresponding to the user setting information from the storage unit 490 and outputs the extracted traffic information.

That is, the controller 470 determines whether a road for which the user has requested traffic information, a traffic information output time, or the like is set. As a result of the determination, when the road for which the user requests the traffic information exists, the controller 470 extracts the traffic information of the road requested by the user from the traffic information analyzed by the additional information processor 460 to display the OSD and subtitles. Output in the form of.

In addition, if the user sets the traffic information output time as a result of the determination, the controller 470 controls the traffic of the road requested by the user at the time requested by the user in the traffic information analyzed by the additional information processor 460. Control the information or the entire traffic information to be output.

Then, the user can obtain traffic information in real time without encountering data broadcasting and traffic broadcasting.

5 is a flowchart illustrating a method of outputting traffic information by a TV according to the present invention.

Referring to FIG. 5, the TV receives and stores user setting information for providing traffic information from the user (S500). That is, the user selects a user information setting menu for providing traffic information using a menu key or a hot key. Then, the TV displays a user information setting screen for providing traffic information as shown in FIG. 7.

Referring to FIG. 7 for the user information setting screen, the user information setting screen 700 includes a road selection area 710, an output time selection area 720, and an output method selection area 730.

All road names defined in the TIT are listed in the road selection area 710, so that the user may select a desired road in the road selection area 710.

For example, if the user wants traffic information of all roads defined in the TIT, he selects 'All', and if he wants traffic information of a specific road, he selects the road. In the user selecting a particular road, the user may select one or more roads. In addition, the user may directly input a desired road in the road selection area 710.

The output time selection area 720 includes a real time output, an output at a predetermined time interval, an output at a specific time, and the like. The real-time output is to cause the traffic information of the road selected in the road selection area 710 to be output in real time.

The output at the predetermined time interval causes the traffic information of the road selected by the road selection area 710 to be output at the time interval set by the user. In setting a predetermined time at which the traffic information is output, the user selects 'output at a constant time interval' and then sets a time interval for outputting the traffic information by selecting a time interval or directly inputting a time interval in a given view. Can be.

The specific time output causes the traffic information of the road selected by the user in the road selection area 710 to be output at a specific time determined by the user. If the user wants to output a specific time of traffic information, select 'Specify time output' and then select or directly input a desired time in the view. Then, the TV sets the time input by the user as the traffic information output time.

The output method selection area 730 is configured in such a manner as OSD output, subtitle output, audio output. The user selects a traffic information output method in the output method selection area 730. For example, if the traffic information is to be output in OSD form, the user selects 'OSD output'. Then, the TV outputs the corresponding traffic information in OSD form.

The user inputs user setting information for providing traffic information through the user information setting screen 700 configured as described above. Then, the TV stores user setting information input by the user.

After performing step 500, the TV receives a broadcast signal updated in real time (S502), and analyzes the received broadcast signal (S504) to determine whether a traffic information provision table exists (S506).

The broadcasting station adds the traffic information provided from the traffic information providing center to the broadcast signal and transmits it to the TV. Then, the TV analyzes the received broadcast signal, outputs an audio signal and a video signal, and analyzes the PSIP to determine whether a traffic information provision table exists.

As a result of the determination in step 506, if there is a traffic information providing table in the broadcast signal, the TV determines whether a version of the traffic information providing table is higher than previously stored traffic information (S508). That is, the TV is compared with the version of the traffic information previously stored using the version information of the traffic information providing table.

As a result of the determination in step 508, if the provided traffic information has a higher version than previously stored traffic information, the TV updates the corresponding traffic information and checks the stored user setting information at step S510.

After performing step 510, the TV outputs traffic information according to the checked user setting information (S512).

For example, if the user setting information is set to 'Highway as a highway, output time is between 7:00 am to 9:00 am, and output as subtitle,' the TV becomes 7:00 am, It begins to provide subtitles and ends traffic information at 9 am.

If the user setting information is 'no traffic information provided', the TV does not output traffic information.

According to another embodiment of the present invention, when the user setting information for providing traffic information is set and the TV is turned off, the TV compares the internal system time with the traffic information output time in the user setting information. If the system time corresponds to the traffic information output time, the TV may perform power on, output an audio / video signal, and output traffic information according to the user setting information.

6 is a flowchart illustrating a method of outputting traffic information requested by a user while watching TV according to the present invention.

Referring to FIG. 6, when a traffic information request command is input by a user during program broadcasting (S600 and S602), the TV displays a traffic information request screen (S604). That is, when the user selects a traffic information request command using a menu key or a hot key while watching the TV, the TV displays a traffic information request screen.

The traffic information request screen may be the same as the user information setting screen shown in FIG. 7. The user inputs information such as a road and time for which traffic information is desired through the traffic information request screen.

After performing step 604, the TV receives the traffic information request information input by the user through the traffic information request screen (S606), extracts and outputs the traffic information corresponding to the input traffic information request information (S606). S608).

After performing step 608, if the user inputs a traffic information providing completion command (S610), the TV stops outputting the traffic information (S612).

According to another embodiment of the present invention, when a traffic information request command is input by a user during program broadcasting, the TV determines whether user information for providing traffic information is set. As a result of the determination, if user setting information exists, the TV may extract and output traffic information corresponding to the user setting information. If the output traffic information is not the traffic information desired by the user, the user may change the user setting information to output the traffic information of the desired road.

8 is a block diagram schematically showing the configuration of a TV capable of providing traffic information according to another embodiment of the present invention.

Referring to FIG. 8, a TV capable of providing traffic information includes a tuner 800, a demodulator 810, a demultiplexer 820, an audio decoder 830, a video decoder 840, a video processor 850, and additional information. The processor 860 includes a key input unit 880, a control unit 870, a storage unit 890, and a communication module 900.

The tuner 800, the demodulator 810, the demultiplexer 820, the audio decoder 830, the video decoder 840, the video processor 850, the additional information processor 860, the key input unit 880, and the controller ( 870 is the same as that described in FIG. 4, and thus description thereof will be omitted.

The communication module 900 may be a wireless communication module or a wired communication module.

In the TV configured as described above, when the user inputs user setting information for providing traffic information, road information and output time information are input as described with reference to FIG. 4, and the output method is an OSD output, a subtitle output, In addition to the audio output, an external terminal output is included.

The external terminal output is to allow traffic information to be output to a terminal, for example, a PC or a mobile phone, which can communicate with the TV by wire or wirelessly through the communication module (network) 900.

If the user wants to output the external terminal, the user selects 'External terminal output' in the output method, and if the user wants the traffic information output from the mobile phone, if the user wants to input the mobile phone number and outputs the traffic information from the PC, the e-mail address is input. Enter it.

Then, the TV extracts the traffic information, converts the traffic information according to the format of the input terminal, and transmits the traffic information to the corresponding terminal.

That is, when the user wants to receive traffic information through the mobile phone and sets the output method to the mobile phone, the TV transmits the traffic information of the corresponding road at the time set in the user setting information. Then, the mobile phone displays the traffic information in the form of a text message or a voice message.

By the above method, the user can easily receive traffic information in real time while moving.

The present invention is not limited to the above embodiments, and many variations are possible by those skilled in the art within the spirit of the present invention.

As described above, according to the present invention, a user provides a method of generating a broadcast signal for providing traffic information which can obtain traffic information in real time without encountering data broadcasting and traffic broadcasting, and a method of providing traffic information in a digital broadcasting receiver. have.

In addition, according to the present invention, when receiving a broadcast while moving by using a mobile terminal, more convenience can be felt, and the broadcast signal generation method for providing traffic information with increasing value added of the product and providing traffic information in the digital broadcast receiver To provide a method.

Claims (18)

A traffic information providing table consisting of a table_Id indicating a table identifier, a version_number indicating a version value, an indicator indicating the number of roads defined in the table, and a loop for providing traffic information of each road in program and system information defined for digital broadcasting ( Broadcast signal generation method for providing traffic information, characterized in that for inserting and transmitting. delete delete delete delete delete The method of claim 1, The traffic information providing table (TIT) is generated using the traffic information provided by the traffic information providing center, the broadcast signal generation method for providing traffic information. The method of claim 1, The traffic information providing table (TIT) inserted into the program and system information protocol is transmitted together with an audio / video signal. When the broadcast signal is received from a broadcast station, dividing the broadcast signal into audio, video, and additional information signals; Parsing a traffic information providing table from the separated additional information to extract traffic information; Determining whether the extracted version of the traffic information is a higher version than previously stored traffic information; If the determination result is a higher version, updating the extracted traffic information and confirming preset user setting information; And Outputting the extracted traffic information according to user setting information preset by a user; Traffic information providing method in a digital broadcast receiver comprising a. delete The method of claim 9, The user setting information includes road information for requesting traffic information, output time information for outputting traffic information, and an output method for outputting traffic information. The method of claim 11, And the output time information is at least one of a real time output, a predetermined time interval output, and a specific time output desired by a user. The method of claim 11, The output method may include at least one of an OSD output, a subtitle output, an audio output, and an output to an external terminal through a network. delete delete delete delete delete

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