KR20070042779A - Method for transmitting and receiving traffic information in digital broadcasting - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transmitting and receiving traffic information in digital broadcasting. For example, a broadcasting station transmits a real time traffic information (TI) in service information (SI) of a broadcast data stream, or transmits the service information (SI). Independently transmits the real-time traffic information (TI), and the digital broadcast receiver extracts the traffic information (TI) included in the service information (SI) of the broadcast data stream or transmitted independently of the service information (SI). In addition, the service information is stored separately from the service information, and the stored real-time traffic information (TI) is displayed to be stopped and scrolled by overlapping the current broadcast screen on an OSD screen having a predetermined size according to a user's selection. Traffic information can be added to provide real-time traffic information, and users can watch as needed. Which is superimposed on the TV screen is very useful inventions that are able to view real-time traffic information.

Digital Broadcasting, Broadcasting Station, Set Top Box, Traffic Information, Service Information, OSD Screen

Description

Method for transmitting and receiving traffic information in digital broadcasting

1 is a block diagram showing the configuration of a digital broadcast receiver to which the traffic information transmission and reception method according to the present invention is applied.

2 is an exemplary view showing a broadcast data stream structure according to the present invention.

3 is an exemplary view showing a broadcast data stream structure according to another embodiment of the present invention.

4 is a flowchart illustrating an operation of a traffic information transmission and reception method in digital broadcasting according to the present invention.

5 is an exemplary view of an OSD screen displayed superimposed in the current broadcast screen in accordance with the present invention.

Explanation of symbols on the main parts of the drawings

       10: digital broadcast receiver 11: tuner

       12: Demux 13: Audio Buffer

       14: video buffer 15: data buffer

       16: MPEG decoder 17: microcomputer

       18: memory 19: OSD generation unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transmitting and receiving traffic information in digital broadcasting. For example, a broadcasting station transmits a broadcasting signal to which traffic information is added, and a digital broadcasting receiver extracts and displays traffic information added to the broadcasting signal and displays it on a screen. The present invention relates to a traffic broadcasting transmission and reception method in broadcasting.

In general, a digital broadcast is multiplexed with a plurality of broadcast programs encoded on the basis of MPEG, and is transmitted in a transport stream (TS). The transport stream is received in a set top box installed at a receiver. A plurality of programs included in the transport stream are demultiplexed so that only one desired program is selected. The selected program is decoded by a decoder built into the set-top box to decode the original audio and video signal to A / To the V output device.

In the digital broadcasting, in order to provide convenience to the user, the electronic service guide (EPG) information and the like are transmitted and included in the broadcast service information (SI), and the PSIP (Program and System Information) that manages the station selection is transmitted. Protocol).

The Program and System Information Protocol (PSIP) is proposed as a standard of the Advanced Television Systems Committee (ATSC) of digital broadcasting TV, and transmits and receives A / V data made in MPEG-2 video and AC-3 audio format, It is composed of several tables to transmit information on channels of each broadcasting station and information on each program of the channel.

The tables all have a basic unit called a section, and one or more sections are combined to form one table and transmitted by this data structure.

Meanwhile, with the development of digital signal processing and communication technology, broadcast signals that provide various contents wirelessly are gradually provided in the form of digital data.

As the broadcast signal is provided in a digital form, not only the broadcast signal but also various information such as news, weather, stocks, and shopping information can be provided together.

In this situation, the recent changes in the living environment and the concentration of residential areas in the city center, the number of vehicles in the city continues to increase, and as the working environment of most workplaces is changed to the main oil system, traffic information is increasing due to the increase of vacation vehicles leaving the city center. Increasingly, the necessity of communication status by section, accident section, congestion section, control section, detour road guidance and time required information by section is increasing day by day.

Accordingly, various methods for providing real-time traffic information of roads through satellite broadcasting, terrestrial broadcasting, etc., which receive real-time broadcasting signals and display them on the screen, have been devised.

The present invention has been made to solve the above situation, the broadcast station including the real-time traffic information (TI) in the service information (SI) of the broadcast data stream, or transmits in real time independently of the service information (SI) The traffic information (TI) is transmitted, and the digital broadcasting receiver extracts the traffic information (TI) included in the service information (SI) of the broadcast data stream or transmitted independently of the service information (SI). In addition to storing the service information and the traffic information, traffic information in a digital broadcast can be displayed so that the stored real-time traffic information (TI) is superimposed on the current broadcast screen to be stopped and scrolled on an OSD screen having a predetermined size according to a user's selection. The purpose is to provide a transmission and reception method.

According to an aspect of the present invention, there is provided a method for transmitting and receiving traffic information in digital broadcasting, the method comprising: extracting and storing traffic information included in a broadcast data stream and storing the extracted traffic information according to a mode state; Characterized in that it comprises two steps to display through the guide screen.

The traffic information of the present invention is characterized in that the transmission is included in the service information of the broadcast data stream, characterized in that the identification information indicating whether or not the traffic information is recorded is recorded in the service information.

The traffic information of the present invention is characterized by being transmitted independently including service information of the broadcast data stream, wherein the traffic information is characterized by being distinguished by unique identification information different from the service information.

The present invention is characterized in that in step 2, the traffic information is continuously extracted and stored, and displayed in real time through the guide screen according to the user's selection, the traffic information, the current information on the broadcast screen of a predetermined size The display is displayed in the stopped and scrolled state by overlapping the SD screen.

Hereinafter, exemplary embodiments of a traffic information transmission and reception method in digital broadcasting according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a digital broadcast receiver to which the traffic information transmission and reception method according to the present invention is applied, FIG. 2 is an exemplary view showing a structure of a broadcast data stream according to the present invention, and FIG. 3 is another embodiment of the present invention. An example diagram showing a broadcast data stream structure according to an example.

As shown in FIG. 1, for example, a digital broadcast receiver 10 such as a set top box (STB) includes a tuner 11, a demux 12, an audio buffer 13, a video buffer 14, and a data buffer. (15), the MPEG decoder 16, the microcomputer 17, the memory 18, the OSD generating unit 19, and the like.

In the microcomputer 17, when the user turns on the power switch using a remote controller or the like and selects and inputs a predetermined broadcast channel number, the microcomputer 17 operates and controls the tuner 11 to broadcast the corresponding broadcast. In addition to allowing the channel to be tuned, a series of operations for storing service information (SI) separated and output through the demux 12 are performed in the memory 18. Here, the service information (SI) includes transmission of EPG information that provides a broadcast program name and broadcast time information.

In the MPEG decoder 16, audio and video data separated and output through the demux 12 are read from the audio buffer 13 and the video buffer 14 and then restored to the original audio and video signals. By performing a decoding operation, the user can watch a broadcast program received through a broadcast channel selected by the user through an external connection device such as, for example, a television.

In the microcomputer 17, when the broadcast signal including traffic information (TI) in the service information (SI) is transmitted in a broadcast data stream, as shown in FIG. 2, the demux 12 Operation control to separate and output the service information (SI) received from the broadcast data stream.

Here, the broadcast data stream may be broadly divided into a header part and a payload part. In this case, information indicating the start of a signal and a packet identifier (PID) indicating a signal included in the payload part are recorded in the header part, and data information to be transmitted is transmitted in the payload part. Is listed.

In the payload portion of the broadcast data stream, video (V), audio (A) and service information (SI) are located. As shown in FIG. 2 (a), the payload of the service information (SI) is located. Traffic information (TI) is located in the private area of the load portion. Here, the packet identification number (PID) indicating the location of the traffic information (TI) is transmitted in the header portion of the service information (SI).

In addition, in the private area of the payload portion of the service information SI, as shown in FIG. 2 (b), identification information (Flags) indicating whether or not the traffic information (TI) is recorded is recorded. Is sent.

Here, the service information (SI) is used as additional information of a digital broadcasting standard in, for example, Europe and Australia (DVB), and in the United States and the United States (ATSC), PSIP (Program and System Information Protocol) The name can be expressed differently according to each country's corresponding standard.

The microcomputer 17 extracts traffic information (TI) by checking the packet identification number (PID) recorded in the header part from the separated service information (SI), or identifies whether traffic information (TI) is recorded or not. After checking through the information Flags, a series of operations of extracting the traffic information TI, classifying the service information SI and the traffic information TI, respectively, and storing the traffic information TI in the memory 18 are performed. Traffic information (TI) is transmitted, including the traffic status, accident section, congestion section, control section, detour road guidance and time required information for each section.

In the microcomputer 17, when the traffic information confirmation menu is selected or automatically set by the user, the traffic information TI stored in the memory 18 is read and the OSD of the small size is displayed in the current broadcast screen. To stop and scroll the screen.

On the other hand, the broadcasting station includes the traffic information (TI) in the service information (SI) of the broadcast data stream or transmits the video (V) and audio (A) to the broadcast data stream as shown in FIG. ), Service information (SI), and traffic information (TI) can be included and transmitted in an independent form. In addition, as shown in FIG. 3B, the payload portion of the traffic information TI includes recorded identification information Flags indicating whether the traffic information TI is recorded and transmitted.

4 is a flowchart illustrating an operation of a method for transmitting and receiving traffic information in digital broadcasting according to the present invention, and FIG. 5 is an exemplary view of an OSD screen superimposed and displayed in a current broadcast screen according to the present invention.

As shown in FIG. 4, for example, when a user of the digital broadcast receiver 10 such as a set-top box (STB) turns on a power switch using a remote controller or the like and selects a predetermined broadcast channel number. The microcomputer 17 controls the tuner 11 so that a corresponding broadcast channel is tuned, and extracts service information (SI) separately output through the demux 12 to the memory 18. In step S10, a series of operations of storing the data are performed.

At this time, when the traffic information (TI) is included in the service information (SI) and transmitted in the broadcast data stream, the microcomputer 17 may be separated from the service information SI output through the demux 12. The packet identification number (PID) of the traffic information (TI) recorded in the header is checked to extract the corresponding traffic information (TI).

In addition, if additional identification information (Flags) indicating whether the traffic information (TI) is recorded in the service information (SI) is transmitted, the traffic information (TI) is recorded by checking the identification information (Flags). After checking whether or not the traffic information TI is recorded, a series of operations of extracting the traffic information TI are performed.

On the other hand, when the traffic information (TI) is transmitted in an independent form such as video (V), audio (A), service information (SI) and traffic information (TI) of the broadcast data stream, the microcomputer 17 Traffic information (TI) separated and output through the mux 12 is extracted.

In addition, when additional identification information (Flags) indicating whether or not the traffic information (TI) is recorded in the traffic information (TI) is transmitted, if the traffic information (TI) is recorded by checking the identification information (Flags) After checking whether or not the traffic information TI is recorded, a series of operations of extracting the traffic information TI are performed.

As described above, the microcomputer 17 separately stores the extracted service information SI and the traffic information TI in the memory 18 (S11), and in the traffic information TI for each section. Traffic status, accident section, traffic congestion section, control section, detour road guidance and time required information for each section are transmitted in real time.

When the traffic information TI is extracted, the microcomputer 17 checks whether the traffic information guide mode is set as the current mode stored in the memory 18 (S12), and as a result of the confirmation, the traffic information guide. If the mode is not set, a separate display device (not shown) is blinked or closed captions are displayed to display whether traffic information is updated to the user (S13).

The microcomputer 17 checks whether the "traffic information confirmation menu" key button provided in the remote controller is selected by the user (S14), and when the traffic information confirmation menu is not selected for a predetermined time, the broadcast signal is received. Receiving and extracting the traffic information (TI) from the broadcast data stream (S10) is repeated.

In the meantime, when the traffic information guide mode is set or when the user selects a "traffic information confirmation menu" key button provided on the remote controller, the microcomputer 17 stores the traffic information TI stored in the memory 18. As shown in FIG. 5, the image is read and superimposed so as to be stopped and scrolled to the small OSD screen in the current broadcast screen (S15).

Accordingly, the user can check the real-time traffic information (TI) transmitted from the broadcasting station without interrupting the current broadcast viewing while watching the predetermined broadcast channel.

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

The traffic information transmission and reception method in the digital broadcasting according to the present invention as described above, for example, a broadcast station transmits the real-time traffic information (TI) in the service information (SI) of the broadcast data stream, or the service information ( Traffic information transmitted in real time traffic information (TI) independently of the SI) and included in the service information (SI) of the broadcast data stream or transmitted independently of the service information (SI) in the digital broadcast receiver. (TI) is extracted and stored separately from the service information, and displays the stored real-time traffic information (TI) to be stopped and scrolled by overlapping the current broadcast screen on an OSD screen having a predetermined size according to a user's selection. May add traffic information to a broadcast data stream to provide a real-time traffic information service. If necessary, the user can check the real-time traffic information superimposed on the current broadcast screen being viewed.

Claims (7)

Extracting and storing traffic information transmitted in the broadcast data stream; And transmitting and displaying the extracted traffic information through a guide screen according to a mode state. The method of claim 1, The traffic information is transmitted and received in the digital broadcast system, characterized in that transmitted in the service information of the broadcast data stream. The method of claim 2, And the identification information indicating whether or not the traffic information is recorded is recorded in the service information. The method of claim 1, The traffic information is transmitted and received independently of the service information of the broadcast data stream traffic information transmission and reception method in a digital broadcasting system. The method of claim 4, wherein And wherein the traffic information is divided into unique identification information different from the service information. The method of claim 1, In the step 2, the traffic information transmission and reception method of the digital broadcasting system, characterized in that for continuously updating and storing the extracted traffic information, and displaying in real time through the guide screen according to the user's selection. The method of claim 1, The traffic information is transmitted and received in a digital broadcasting system, characterized in that the superimposed on the current broadcast screen to the OSD screen of a predetermined size and displayed in a stopped and scrolled state.

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