KR101331402B1 - Method of setting of link DB for service link operation in DAB system, and computer-readable record medium for the same - Google Patents

Abstract

The present invention relates to a link DB setting method for a service link operation in a DAB system, and more particularly, to use when there is no transmission or no reception for information for a service link operation in a broadcast using a DAB standard. The present invention relates to a link DB setting method for a service link operation for defining a setting method for a DAB service link DB. The DAB service link DB setting method of the present invention includes a first step of reading current service ID information (hereinafter, referred to as first ID information) corresponding to a service currently receiving DAB broadcasting through a tuner; A second step of storing in an object set on the DAB service link DB; A third step of reading ID information (hereinafter, referred to as second ID information) corresponding to a service received immediately before the currently received service; And storing the link-related information on the object set above by storing the first ID information read above.

Description

Method of setting of link DB for service link operation in DAB system, and computer-readable record medium for the same}

The present invention relates to a link DB setting method for a service link operation in a DAB system, and more particularly, to use when there is no transmission or no reception for information for a service link operation in a broadcast using a DAB standard. The present invention relates to a link DB setting method for a service link operation for defining a setting method for a DAB service link DB.

Digital Audio Broadcasting (DAB), which was launched in the UK in 1995, is a digital radio broadcasting service that is currently being serviced in many countries around the world, and is capable of providing CD-level audio and data information services.

The DAB service is expected to grow as a mobile multimedia service medium in the future, replacing the existing analog radio broadcasting. Currently, the service is provided in most countries except North America for a few years. In addition, the DAB service adopts OFDM transmission method, so the reception performance is excellent in a mobile environment.

Meanwhile, in the information related to the service link transmitted by the DAB broadcasting station on the DAB system, the most important information is service information to be linked and frequency information to which the corresponding service belongs.

However, the DAB technical specification does not include a compulsory provision that the service information and frequency information to be linked must be transmitted from the DAB broadcasting station. Therefore, it is found that the DAB broadcasting station does not transmit the broadcasting information. It is becoming a problem.

Therefore, in the technical field, the service information and frequency information to be linked are not transmitted by the DAB broadcasting station or the frequency information corresponding to the service information and service to be linked due to environmental factors (e.g., weak electric field situation). There is a demand for technology development to normally perform a service link even when it is temporarily unable to receive normally.

[Related Technical Literature]

1. Method of processing and reproducing digitally coded audio data and radio broadcasting receiver for digital audio broadcasting data (Patent application No. 10-1993-0703752)

2. METHOD FOR PROVIDING CONTENTS USING DAB NETWORK AND MOBILE COMMUNICATION NETWORK (Patent Application No. 10-2003-0016661)

3. Method for Delineating Packets in Digital Audio / Multimedia Broadcasting (DAB / DMB) Receiver Systems (Patent Application No. 10-2006-0117617)

4. Digital audio broadcasting receiver and apparatus suitable for recording and reproducing digital audio signal (DAB receiver and apparatus for recording and reproducing digital audio signal etc.) (Patent Application No. 10-2002-0004454)

5. Video service providing and receiving method in DABsystem, and apparatus thereof in digital audio broadcasting (DAB) (Patent Application No. 10-2005-0087285)

An object of the present invention is to provide a link DB setting method for a service link operation in a DAB system for normally generating a DAB service link DB to be used for a service link operation even when the DAB broadcasting station does not transmit or cannot receive information related to a service link. In providing.

Link DB setting method for the service link operation in the DAB system according to the present invention for achieving this problem is used when there is no transmission or service information for the service link when receiving the DAB broadcast through the tuner A method for setting a DAB service link DB for a service link operation, comprising: a first step of reading current service ID information (hereinafter, referred to as first ID information) corresponding to a service currently receiving a DAB broadcast through a tuner; A second step of storing in an object set on the DAB service link DB; A third step of reading ID information (hereinafter, referred to as second ID information) corresponding to a service received immediately before the currently received service; And storing the read-out ID information together with the read-out first ID information to complete the storing of the link-related information on the object set above.

At this time, the fourth step of completing the storage of the link-related information for the object set above, by extracting the service link-related information including the ID information corresponding to the service in the DAB band including the frequency of the service currently received And storing the first ID information and the second ID information in the set object.

In addition, the step of determining whether the frequency information is transmitted from the DAB transmitting apparatus through the tuner, and if the frequency information is transmitted as a result of the above determination, the frequency information corresponding to the service that was received immediately before the current service (hereinafter, referred to as first frequency information) Extracting; And storing the first frequency information together with the link related information to complete the storing of the frequency related information.

In addition, in the step of completing the storage of the frequency-related information, when the frequency information transmission is not performed as a result of the above determination, all frequency information in the DAB band including the frequency of the service currently being received (hereinafter referred to as second frequency information) Is stored together with the link related information to complete the storage of the frequency related information. Further, in the step of completing the storage of the frequency-related information, the frequency-related information is preferably generated for use when there is no transmission or no reception of the frequency information for the service link when receiving the DAB broadcast through the tuner. Do.

In addition, when receiving a DAB broadcast through a tuner, when there is no transmission of frequency information or reception of frequency information is impossible, the first ID information including ID information of a service currently being received is included among a plurality of objects stored in the DAB service link DB. Extracting an object; Reading second ID information from the extracted object; Determining whether first frequency information matching the read second ID information is stored in the extracted object; If the first frequency information matching the read second ID information is stored, causing the tuner to perform a scan using the stored first frequency information and a frequency of a service currently being received among the plurality of objects; It is desirable to.

In addition, the step of allowing the tuner to perform the scan using the stored first frequency information and the frequency of the service currently being received among the plurality of objects does not store the first frequency information matching the read second ID information. In this case, it is preferable that the tuner perform a scan using all frequency information in a DAB band including a frequency of a service currently being received among a plurality of objects and a frequency of a service currently being received among a plurality of objects.

According to the present invention, even when the broadcasting station does not transmit service information or frequency information related to the service link or the DAB terminal does not receive it due to an external situation such as entry into a weak electric field, the service link operates normally using the DAB service link DB. This gives a possible effect.

1 is a diagram showing a system in which a link DB setting method for a service link operation is performed in a DAB system according to the present invention;
2 is a view for explaining the structure of the DAB service link DB according to the present invention.
3 is a diagram illustrating a process of storing link related information on a DAB service link DB in a DAB system according to the present invention;
4 is a diagram illustrating a process of storing frequency related information on a DAB service link DB according to another embodiment of the present invention.
5 is a diagram illustrating a service link operation using a DAB service link DB in a DAB system according to the present invention.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a diagram illustrating a system in which a link DB setting method for a service link operation is performed in a digital audio broadcasting (DAB) system according to an exemplary embodiment of the present invention. Referring to FIG. 1, a DAB system includes a DAB transmitter 10 for transmitting DAB broadcasts from a DAB station, and a DAB terminal 20 for detecting and receiving a service to be linked among DAB broadcasts. The DAB terminal 20 includes a tuner 21, a controller 22, and a storage 23.

Here, the tuner 21 may be formed of only two main tuners 21a or two or more sub-tuners 21b. The main tuner 21a is a component for directly receiving a stream for digital audio broadcast reproduction from the DAB transmitter 10 so that audio is output. On the other hand, the sub-tuner 21b is a component that performs a necessary operation for audio output in addition to the audio output by the main tuner 21a without receiving a stream required for digital audio broadcast reproduction from the DAB transmitter 10. The following description will be made as one structural unit irrespective of the detailed functions of the tuner 21. However, internally, the output function according to the audio processing is performed by the main tuner 21a, and the subtuner 21b is used for the audio output function. Clarify what is done by

The storage unit 23 stores a DAB service link DB 24 for performing a service link operation in a DAB broadcast. Here, the DAB service link DB 24 includes service link operation information, and a detailed description thereof will be made below with reference to FIG. 2.

2 is a diagram for explaining the structure of a DAB service link DB 24 according to an embodiment of the present invention. 1 and 2, the DAB service link DB 24 largely includes link related information and frequency related information.

Here, the link related information corresponds to "first ID information" corresponding to the service ID information currently received through the tuner 21 when receiving the DAB broadcast, and ID information corresponding to the service received immediately before the service currently being received. Includes " second link information ", " service link related information " including all ID information corresponding to a service in a DAB band including a frequency of a service currently received on the storage unit 22, and the like.

In other words, the first ID information is the same service ID as the service ID of the service currently being received, and the second ID information is the ID of the service received immediately before the service currently being received.

The first ID information and the second ID information among the above-described link related information are information indicating the service of the DAB broadcast, and are generated by being included in the DAB service link DB 24 regardless of whether the broadcast station transmits them.

On the other hand, the frequency-related information is "first frequency information" indicating the frequency corresponding to the service received immediately before the service currently received through the tuner 23, and all frequencies in the DAB band including the frequency of the service currently being received. It includes "second frequency information" indicating.

Here, the link related information composed of the first ID information, the second ID information, and the like, and the frequency related information composed of the first frequency information and the second frequency information are stored by the controller 22 in one object unit. (23) It is stored in the DAB service link DB 24 therein.

3 is a diagram illustrating a process of storing link related information on a DAB service link DB 24 in a link DB setting method for a service link operation in a DAB system according to an embodiment of the present invention. 1 to 3, when the controller 22 receives the DAB broadcast through the tuner 21, the controller 22 is the first service ID information corresponding to the service currently received through the tuner 21. ID information " is read from the storage unit 22, and one read-out ID information is set on the DAB service link DB 24, and then stored in the set object (S1).

After step S1, the controller 22 reads "second ID information", which is ID information corresponding to a service that is received immediately before the currently received service, from the storage 22, and then, in step S1. It is stored together with the first ID information described in step S1 in the set object (S2).

After step S2, the controller 22, if there is "service link related information" including ID information corresponding to the service in the DAB band including the frequency of the service currently being received on the storage 22, service The link-related information is extracted and stored together with the above-described first ID information and second ID information in the object set in step S1, thereby completing storage of "link-related information" of one object (S3).

4 is a diagram illustrating a process of storing frequency related information on a DAB service link DB 24 in a link DB setting method for a service link operation in a DAB system according to an embodiment of the present invention, and FIG. The process of storing frequency related information on the service link DB 24 is generally performed after the process of FIG. 3.

1 to 4, the controller 22 checks whether the frequency information is transmitted from the DAB transmitter 10 through the tuner 21 (S11), and determines whether to transmit frequency information. (S12).

When the frequency information is transmitted from the DAB transmission apparatus 10 as a result of the determination in step S12, the controller 22 extracts frequency information corresponding to the service that was received immediately before the currently received service from the storage 22. In operation S13, the first frequency information is set together with the link related information stored through the process of steps S1 to S3 of FIG. 3.

On the other hand, if the frequency-related information is not transmitted from the DAB transmitting apparatus 10 as a result of the determination in step S12, the controller 22 stores all frequency information in the DAB band including the frequency of the service currently being received. ), And set the " second frequency information " and store it together with the link related information stored through the process of steps S1 to S3 of FIG. Complete the storage (S14).

FIG. 5 is a diagram illustrating a service link operation using a DAB service link DB 24 in a link DB setting method for a service link operation in a DAB system according to an embodiment of the present invention. Referring to FIGS. 1 to 5, the controller 22 checks whether there is no transmission of frequency information or reception of frequency information when the DAB broadcast is received through the tuner 21 ( S21).

After step S21, the controller 22 extracts an object including first ID information, which is ID information corresponding to a service currently being received, from among a plurality of objects of the DAB service link DB 24 (S22).

After the step S22, the controller 22 reads the second ID information of the extracted object (S23).

After the step S23, the controller 22 checks the first frequency information matching the second ID information read in the step S23 from the extracted object (S24).

As a result of checking in step S24, it is determined whether the first frequency information is separately stored on the object extracted in step S22 (S25).

If the first frequency information is separately stored on the object extracted in step S22 as a result of the determination in step S25, the controller 22 may determine the frequency of the service currently being received corresponding to the first frequency information and the first ID information. Scan by using is performed by the tuner 21 (S26).

On the other hand, when the first frequency information is not stored separately on the object extracted in step S22 as a result of the determination in step S25, the controller 22 may determine a frequency corresponding to the first ID information, and in step S22. Allow the tuner 21 to perform a scan using "second frequency information" which is all frequency information in the DAB band including the frequency of the currently received service corresponding to the first ID information stored separately on the extracted object. (S27)

The most important information related to the service link transmitted from the DAB transmitting apparatus 10 of the DAB broadcasting station is the above-mentioned "link related information" which is service information to link and the above-mentioned "frequency related information" which is frequency information to which the corresponding service belongs. .

When the link related information and the frequency related information are not transmitted from the DAB transmitting apparatus 10 of the DAB broadcasting station or the DAB terminal 20 cannot receive it due to an external situation such as entering the weak electric field situation of the DAB terminal 10. The DAB terminal 20 may generate the DAB link service DB 24 in the same manner as in FIGS. 3 and 4, and then perform a scan for the service link according to the procedure described in FIG. 5.

The present invention can also be embodied in the form of computer readable code on a computer readable recording medium. At this time, the computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored.

Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage, and the like, and may be implemented in the form of a carrier wave . The computer-readable recording medium can also be stored and executed by a computer-readable code in a distributed manner on a networked computer system. And functional programs, codes, and code segments for implementing the present invention can be easily deduced by programmers skilled in the art to which the present invention belongs.

As described above, the embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention. And is not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: DAB Dispenser
20: DAB terminal
21: tuner
21a: main tuner
21b: subtuner
22:
23:

Claims (8)

A method of setting a DAB service link DB for a service link operation when information acquisition for a service link is poor when receiving a DAB broadcast,
A first step of reading service ID information (hereinafter, 'first ID information') for a service currently being received (hereinafter, 'current reception service') when receiving a DAB broadcast through a tuner;
A second step of storing the first ID information in an object set on the DAB service link DB;
A third step of reading service ID information (hereinafter, 'second ID information') of a service which has been received immediately before the current reception service (hereinafter, 'directly received service');
A fourth step of storing link related information about the set object by inserting the second ID information into the set object on the DAB service link DB;
A seventh step of determining whether to transmit frequency information from the DAB transmitter through the tuner;
An eighth step of extracting frequency information (hereinafter, 'first frequency information') of the last reception service when frequency information transmission is performed as a result of the determination of the seventh step;
A ninth step of storing frequency-related information by storing the first frequency information together with the link-related information for use in the case of securing information for a service link when receiving DAB broadcast through the tuner;
Link DB setting method for the service link operation in the DAB system configured to include.
The method according to claim 1,
Performed between the fourth and seventh steps,
Extracting service link related information including ID information of a service in a DAB band including a frequency of the current receiving service;
A sixth step of storing the extracted service link related information together with the first ID information and the second ID information in the set object;
Link DB setting method for the service link operation in the DAB system further comprises.
delete The method according to claim 2,
If the frequency information is not transmitted as a result of the seventh step, all frequency information (hereinafter referred to as 'second frequency information') in the DAB band including the frequency of the current reception service is stored together with the link related information. A tenth step of storing frequency related information;
Link DB setting method for the service link operation in the DAB system further comprises.
delete The method of claim 4,
When receiving DAB broadcast through the tuner, when there is no transmission of frequency information or reception of frequency information is impossible, an object including first ID information, which is ID information of a current reception service, among a plurality of objects stored in the DAB service link DB. Extracting the eleventh step;
A twelfth step of reading second ID information from the extracted object;
A thirteenth step of determining whether first frequency information matched with the read second ID information is stored in the extracted object;
When the first frequency information matching the read second ID information is stored, the tuner performing a scan using the stored first frequency information and a frequency of a current reception service among the plurality of objects;
Link DB setting method for the service link operation in the DAB system further comprises.
The method of claim 6,
When the first frequency information matching the read second ID information is not stored, all of the DAB bands including the frequency of the current reception service among the plurality of objects and the frequency of the current reception service among the plurality of objects are included. A fifteenth step in which the tuner performs a scan using frequency information;
Link DB setting method for the service link operation in the DAB system further comprises.
A computer-readable recording medium having recorded thereon a program for performing a link DB setting method for a service link operation in a DAB system according to any one of claims 1, 2, 4, 6, and 7.

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