KR101117571B1 - System for providing Traffic information using digital radio and Method thereof - Google Patents

Abstract

The present invention relates to a traffic information providing system using a digital radio and a method of operating the same, and more particularly, to receive traffic information transmitted from a digital broadcasting system in a digital radio provided in a vehicle, and to store location information and map data of the vehicle. The present invention relates to a traffic information providing system using a digital radio and a method of operating the same, for converting and outputting traffic information of a nearby area into a voice through a TTS module.
The present invention receives the traffic information from the digital broadcasting system and the digital broadcasting system for collecting and transmitting the traffic information collected according to the region through GPS satellites and Digital Audio Broadcasting (DAB) and Digital Radio Mondiale (DRM +) method, It includes a digital radio for providing traffic information according to the proximity area according to the location data received from the GPS satellite and POI (Point Of Interest) information of the map data, the location information of the vehicle is received through the digital radio to approach The traffic information corresponding to the area can be output by voice, and the digital radio upgrades new traffic information in real time so that the traffic information occurring in the nearby area can be delivered quickly, and the traffic information according to the operation of the vehicle at the same time as listening to the radio There is an effect that can be provided.

Description

System for providing traffic information using digital radio and its operation method

The present invention relates to a traffic information providing system using a digital radio and a method of operating the same, and more particularly, to receive traffic information transmitted from a digital broadcasting system in a digital radio provided in a vehicle, and to store location information and map data of the vehicle. The present invention relates to a traffic information providing system using a digital radio and a method of operating the same, for converting and outputting traffic information of a nearby area into a voice through a TTS module.

DAB (Digital Audio Broadcasting) and DRM + (Digital Radio Mondiale) provide audio services as well as data services. Examples of additional data provided through the data service include still images, moving images, and graphics. Examples of multimedia services that can be provided by transmitting such additional data include travel and traffic information providing services and news headline text. Independent program-related services such as providing program-related data (PAD), such as combining images with images or displaying weather forecasts and traffic information with electronic maps, and broadcasting on web sites or GPS for DAB. Information services, and video transmission services.

As analog broadcasting ends and digital broadcasting begins in earnest at the end of 2012, functions that can be mounted on the radio are increasing due to the spread of receivers with improved digital radio processing capabilities.

An object of the present invention is to provide a traffic information providing system and a method of operating the same using a digital radio that can receive the location information of the vehicle through the digital radio and the traffic information corresponding to the near area can be output by voice.

Another object of the present invention is to provide a traffic information providing system using a digital radio and a method of operating the digital radio, which can quickly deliver new traffic information in real time so that traffic information generated in a nearby area can be quickly transmitted.

Traffic information providing system using a digital radio according to the present invention is a GPS satellite; A digital broadcasting system for collecting and transmitting traffic information collected according to regions through DAB (Digital Audio Broadcasting) and DRM + (Digital Radio Mondiale) schemes; And a digital radio for receiving traffic information from the digital broadcasting system and providing traffic information according to a nearby area according to location data received from the GPS satellite and point of interest (POI) information of map data. It is done.

In addition, according to the present invention, the traffic information is characterized in that at least any one of risk information, disaster disaster information and communication situation information according to the proximity region.

According to the present invention, the digital radio further comprises: a tuner for receiving an OFDM modulated signal; An OFDM demodulator for demodulating the received OFDM modulated signal into a DAB transmission frame; A channel decoder including a baseband decoder and an OFDM channel decoder for parsing fast information channel data included in a DAB transmission frame and generating and displaying a service list to a user; An MSC demultiplexer for extracting and outputting service data according to the user selecting one service; A decoder unit for decoding the encoded video stream, the encoded audio stream and the encoded traffic information stream constituting the video service; A GPS receiver for receiving location data from the GPS satellites; A map data database DB for storing map information; A traffic information database (DB) for storing traffic information data decoded by the decoder unit; A TTS module for converting the traffic information data consisting of the text into voice; And controlling each component in accordance with encoding parameter information and packetization information, receiving traffic information from the digital broadcasting system, and transmitting the traffic information to a nearby area according to point of interest (POI) information of location data and map data received from the GPS satellites. And a control unit for controlling the traffic information data to be output as voice.

According to the present invention, if the controller reboots the system, the received traffic information stream data is compared with the previously stored traffic information stream data.

A method of operating a traffic information providing system using a digital radio according to the present invention includes the steps of collecting and transmitting traffic information collected according to a region by a digital broadcasting system through digital audio broadcasting (DAB) and digital radio mondiale (DRM +) methods; Receiving, by the digital radio, traffic information data from the digital broadcasting system; And outputting, by the digital radio, the traffic information data according to the proximity region according to the location data received from the GPS satellite and the point of interest (POI) information of the map data.

According to the present invention, there is provided a method for receiving traffic information data from the digital radio and outputting the voice information, the method comprising: receiving traffic information data when the system is restarted; Checking a version of the received traffic information data; If the received traffic information data is a new version, upgrading a traffic information data database (DB); Receiving location data from a GPS satellite to determine the location of the vehicle; Interlocking with map data according to the identified position of the vehicle; And converting the information according to the neighboring region into voice through the TTS module and outputting the information according to the received traffic information data.

According to the present invention, traffic information corresponding to a nearby area may be output by voice by receiving location information of a vehicle through a digital radio, and traffic information generated in a nearby area is promptly upgraded by digital radio upgrading new traffic information in real time. There is an effect that can be delivered.

In addition, there is an effect that can receive traffic information according to the operation of the vehicle at the same time listening to the radio.

1 is a block diagram of a traffic information providing system using a digital radio according to a preferred embodiment of the present invention.
2 is a block diagram showing a configuration of a digital broadcasting system.
3 is a block diagram showing the configuration of a digital radio according to a preferred embodiment of the present invention.
4 is a reference diagram illustrating that packet data and video service data among audio data and traffic information data service are multiplexed in a main service channel (MSC).
5 is a flowchart illustrating a method for receiving and outputting traffic information data in a digital radio according to an exemplary embodiment of the present invention.

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

1 is a block diagram of a traffic information providing system using a digital radio according to a preferred embodiment of the present invention.

As shown in FIG. 1, a traffic information providing system using a digital radio includes a GPS satellite 300 and a digital digital assistant (DAB) for transmitting location information data to a GPS receiver 296 of a digital radio 200 provided in a vehicle. The GPS satellite system receives traffic information from the digital broadcasting system 100 and the digital broadcasting system 100 for collecting and transmitting traffic information collected according to an area through audio broadcasting) and digital radio mondiale (DRM +). The digital radio 200 is configured to provide traffic information according to a proximity region according to the location data received from the 300 and the point of interest (POI) information of the map data.

DAB / DRM + is the next generation radio broadcast that provides high quality sound quality, various data services, and excellent mobile reception quality, following FM / AM, which is currently being serviced.

DAB / DRM + provides pure CD quality sound without distortion, interference and overlapping. It is switched by selecting from the text menu, and it is continuously and stably received even in a mobile environment. It can simultaneously transmit music and data service to one receiver. .

In addition, it is possible to express more detailed text information than RDS (Radio Data System), music selection by taste, high value-added information is provided, and the same broadcast quality is provided with a small amount of power consumption.

The digital radio 200 is applied to a data broadcasting based LBS (Locate Based Service) application system combining GPS (Global Positioning System) technology using an embedded software platform and a receiving terminal platform.

The digital radio 200 equipped with a GPS function may be mounted on a vehicle to provide a driver with traffic facility information such as a child protection zone or a speed bump while listening to a radio to induce safe vehicle operation.

2 is a block diagram showing the configuration of a digital broadcasting system.

As shown in FIG. 2, the services provided by the digital broadcasting system 100 include an audio service, a video service, and a data service.

Accordingly, the video service encoder 110, the audio service encoder 120, and the data service encoder 130 are provided to encode respective service data.

Video data such as a movie, a drama, a music video, and the like are sent to the video service encoder 110, encoded into stream mode data, and then input to the MSC multiplexer 140 through channel coding.

Audio data, such as voice and music, is input to the audio service encoder 120, and the encoding and channel coding are performed to the MSC multiplexer 140. In the DAB system, since a plurality of video services and audio services may be provided for each channel, there may be a plurality of video service encoder 110 and audio service encoder 120.

Disaster / disaster information such as hazard information and fire in a specific area, traffic text data and web data including information on road traffic and vehicle operation are classified into packet mode data, and these packet mode data are classified as data service encoders. Input to the 130 is performed after the encoding and channel coding is input to the MSC multiplexer 140.

Since a plurality of data services in the packet mode may exist, the data service encoder 130 may also exist in plurality.

Such data service data may also be provided in a program-related data (PAD) field of the data for audio service.

The MSC multiplexer 140 multiplexes the encoded video service data, the audio service data, and the traffic information data service data, adds additional information and multiplexed information about each service, and attaches synchronization information thereto to transmit DAB. Create and output a transmission frame.

The DAB transmission frame thus made is transmitted on the radio waves of the VHF band through the OFDM modulator 150 and the amplifier 160. The receiver may be fixed, portable or mobile.

3 is a block diagram showing the configuration of a digital radio according to a preferred embodiment of the present invention.

The digital radio 200 receives, through the tuner 210, an OFDM modulated signal of traffic text data including disaster / disaster information such as danger information and fire occurrence in a specific region, and information on traffic conditions and vehicle operation of a road. The demodulator is demodulated by the OFDM demodulator 220 to form a DAB transmission frame.

The channel decoder 230 includes a baseband decoder 232 and an OFDM channel decoder 234.

The channel decoder 230 parses fast information channel (FIC) data included in the DAB transmission frame, generates a service list, and displays the service list to the user.

High-speed information channel (FIC) data includes service encoding parameters and traffic information packetization information, and when interpreted, the FIC data not only knows which service is provided, but also the data constituting the service is encoded according to which method. You can see if it is packetized.

When the user selects one service, the MSC demultiplexer 240 extracts and outputs the service data accordingly. When the user selects a video service, the encoded video stream, the encoded audio stream, and the encoded traffic data stream constituting the video service are decoded by the decoder unit 249, that is, the video decoder 250, the audio decoder 260, and Passed to data decoder 270 to be decoded.

The controller 280 controls each component according to the video service encoding parameter information and the packetization information.

In addition, the GPS receiver 296 receives the position data from the GPS satellite 300 and checks the position of the vehicle.

The map data DB 290 including the point of interest (POI) may store map information, and may be limited to a desired region according to a user.

The map data DB 290 preferably extracts only the necessary elements of the POI information of the existing navigation and simplifies and constructs the DB into optimal information that can be stored in a digital radio limited storage space.

The traffic information database DB stores traffic information data decoded by the decoder 249.

Traffic text data classified in the packet mode is converted into speech by a text-to-speech (TTS) module 294.

The controller 280 controls each component according to encoding parameter information and packetization information, receives the traffic information from the digital broadcasting system 100, and POIs of the position data and the map data received from the GPS satellite 300. According to the Point Of Interest) information, the traffic information data according to the neighboring area is controlled to be output by voice.

FIG. 4 is a reference diagram illustrating that packet data and video service data among audio data and traffic information data service are multiplexed in a main service channel (MSC).

The transmission frame of the DAB and DRM + includes a synchronization channel (SC) 310, a fast information channel (FIC) 320, and a main service channel (MSC) 330. Data for audio service, packet data for data service, and data for video service are carried on the main service channel (MSC) 330.

As can be seen with reference to Figure 4, the data for data service may be carried in the main service channel (MSC) 330 via the packet mode, or may be carried as part of the audio service data.

Data carried as part of data for an audio service is called program associated data (PAD). For example, during a music broadcast, a picture or profile data of a singer is included in the audio data and transmitted in the program related data (PAD) field.

5 is a flowchart illustrating a method for receiving and outputting traffic information data in a digital radio according to an exemplary embodiment of the present invention.

As shown in FIG. 5, in the method for receiving traffic information data from the digital radio 200 and outputting the voice information, the traffic transmitted from the digital broadcasting system 300 when the digital radio 200 system is restarted. Information data is received (S500, S502).

When the traffic information data is received from the digital broadcasting system 300, the data version is checked, and when the received traffic information data is a new version, the traffic information data DB 292 is upgraded (S504 and S506).

Subsequently, the vehicle receives the location data from the GPS satellite 300 to check the location of the vehicle, and in accordance with the received traffic information data in conjunction with the map data according to the identified location of the vehicle, the TTS module ( 294) is converted into voice and output (S508 ~ S518).

As described above, based on the digital radio 200, it is possible to induce safe vehicle operation by providing the location and special features of road traffic facilities while driving the vehicle, and after registering the position of the vehicle using the GPS reception technology, it is already registered in the radio receiver. By combining the information of the road traffic facilities, it is possible to provide various information related to the road traffic by using the TTS (Text To Speech) technology.

In addition, newly registered road traffic information is converted to normalized information and transmitted to the radio receiver using a digital broadcasting transmission system to store traffic information in the radio receiver's own storage device, and to manage version management of the received information from time to time. Can be run and updated.

100: digital broadcasting system 200: digital radio
210: tuner 220: OFDM demodulator
230: channel decoder 232: baseband decoder
234: OFDM channel decoder 240: MSC demultiplexer
249: decoder 250: video decoder
260: audio decoder 270: data decoder
280: control unit 290: map data DB
292: Traffic Information DB 284: TTS Module
296: GPS Receiver

Claims (6)

delete delete In a traffic information providing system using a digital satellite system linked with a GPS satellite and a digital broadcasting system for collecting and transmitting traffic information collected according to regions through DAB (Digital Audio Broadcasting) and DRM + (Digital Radio Mondiale) methods,
A digital radio configured to receive traffic information from the digital broadcasting system and to receive location data from the GPS satellites,
The digital radio,
A tuner for receiving an OFDM modulated signal;
An OFDM demodulator for demodulating the received OFDM modulated signal into a DAB transmission frame;
A channel decoder including a baseband decoder and an OFDM channel decoder for parsing fast information channel data included in a DAB transmission frame and generating and displaying a service list to a user;
An MSC demultiplexer for extracting and outputting service data according to the user selecting one service;
A decoder unit for decoding the encoded video stream, the encoded audio stream and the encoded traffic information stream constituting the video service;
A GPS receiver for receiving location data from the GPS satellites;
A map data database DB for storing map information;
A traffic information database (DB) for storing traffic information data decoded by the decoder unit;
A TTS module for converting the traffic information data consisting of the text into voice; And
Each component is controlled according to encoding parameter information and packetization information, and receives traffic information including danger information, disaster disaster information, and traffic situation information according to an adjacent region from the digital broadcasting system, and receives position data from the GPS satellites. And control so that traffic information data according to a neighboring area is output as voice according to POI (Point Of Interest) information of map data, and when the system is rebooted, the received traffic information stream data is compared with previously stored traffic information stream data. If there is additional information, upgrade to a new location, and receive the location data from the GPS satellites to check the location of the vehicle, and the traffic according to the adjacent area according to the received traffic information data in conjunction with the map data according to the identified location of the vehicle. It includes a control unit to provide the information data The traffic information providing system with digital radio, wherein the. delete delete delete

Images