KR200369938Y1 - Broadcasting receiver based on eureka-147 - Google Patents

Abstract

The present invention is applied to a device including a digital audio broadcasting receiver based on Eureka-147 systematically organizes and stores the contents of the received digital audio broadcasting service in a database, and based on this, the user can quickly and easily service the user. The present invention relates to a EUREKA-147 based broadcast receiver for easy selection.

The present invention relates to a EUREKA-147 based broadcast receiver configured to provide a service according to a frequency selected by a frequency manual input or a frequency auto-scan, and is currently used for a service obtained as a result of the frequency manual input or frequency auto-scan. A controller that controls whether or not reception is possible, an ensemble and service component to which each of the services belongs, a service database storing PTY information for each service or service component, and information stored in the service database at the same time and sorts according to each element. Characterized in that the made up.

Description

Eureka-147-based broadcast receiver {BROADCASTING RECEIVER BASED ON EUREKA-147}

The present invention relates to a broadcast receiver based on Eureka-147. In particular, the present invention applies to a device including a digital audio broadcast receiver based on Eureka-147 and organizes and stores the contents of a digital audio broadcast service received in a database. The present invention relates to a Eureka-147 based broadcast receiver having a database structure that allows a user to select a desired service quickly and easily.

Digital Audio Broadcasting (DAB) or Digital Multimedia Broadcasting (DMB) is a high-speed transfer as well as a variety of additional data services such as CD-quality high-quality audio services, transportation and securities, compared to conventional analog AM or FM broadcasting. It is expected to be spotlighted as a new mobile multimedia service as well as a replacement of current AM and FM broadcasts as a mobile multimedia broadcasting that can provide clear image quality service anytime and anywhere with a screen of less than 7 inches.

1 is an ensemble structure diagram of the EUREKA-147 system. As shown in Fig. 1, the broadcast structure of the EUREKA-147 system used for DAB or DMB is digitally modulated on one frequency, unlike AM / FM broadcasting, which transmits one broadcast on one frequency. The broadcaster service and a plurality of service components that are components are simultaneously transmitted.

That is, the ensemble structure of the EUREKA-147 system includes a fast information block (FIB) including various information related to service and FIG (Fast Information Group), which is a subelement thereof. It consists of a fast information channel (FIC) composed of a real audio service and a main service channel (MSC) composed of a bundle of sub-channels.

Meanwhile, in implementing a EUREKA-147 based DAB or DMB receiver, service data such as an ensemble, a service, a service component, and a program type (Pty) through fast information channel (FIC) parsing is implemented. Indication is one of the essential functions of a DAB or DMB receiver. These ensembles, services, and service components are searched by using a frequency manual input method in which a user directly inputs a frequency to detect a signal, or a frequency auto-scan method similar to FM / AM broadcasting. By effectively using the searched ensemble, service, service component and PTY, the listener can effectively listen to the broadcast to be listened to.

With respect to such EUREKA-147 based DAB or DMB receivers, Utility Model Registration Nos. 290274 (Digital Audio Broadcasting Receivers with External Display Means), 288055 (Portable Digital Audio Broadcasting Receivers), and No. 262879 (Removable) A digital audio broadcasting receiver having a storage means is disclosed, and Patent Registration No. 38603 (Analog and Digital Broadcasting Combined Receiver) is disclosed. Patent Publication No. 2003-0025602 (Digital Audio with a Video Receiving Function) Broadcasting receiver), patent application number 2001-0058732, patent application number 2001-0058733 (analog and digital broadcasting complex receiver and receiving method thereof), patent application number 2002-0033364 (digital broadcasting receiver) and patent application number 2002 -003108 (a digital audio broadcast receiver having a storage medium interoperating with a demodulation device and an external device, etc. has been disclosed. The prior arts are mainly related to the composite receiver, which adds the function of DAB or DMB to the existing receiving medium, and is based on the efficient data storage structure for storing the EUREKA-147 based ensemble, service, service component, PTY, etc. Techniques related to the design of the system have not been disclosed.

2 is a hardware block diagram of a typical EUREKA-147 based broadcast receiver. As shown in FIG. 2, a typical EUREKA-147-based broadcast receiver tuner 10 that separates only a frequency signal selected by a user from signals captured by an antenna under the control of a controller 26 that controls the overall operation of the device. , An ADC 12 for converting an analog signal captured by the tuner 10 into a digital signal, an OFDM decoder 14 for decoding the digital signal converted in the ADC 12 by orthogonal frequency division modulation (OFDM), and an OFDM decoder Audio decoder 16 which decodes the audio signal among the signals decoded by 14, DAC 20 which converts the digital signal decoded by audio decoder 16 into an analog signal and outputs to the speaker 22, OFDM A synchronization detector 24 for detecting various signals necessary for synchronization, including a packet MUX 18 for multiplexing a packet of a data signal among the signals decoded by the decoder 14 and a synchronization signal; Selection functions may be made, including various keys is selected by using a function to input the input 28 and the current operating status such as a display 30 used to display the device provided in the apparatus includes a.

3 is a flowchart illustrating the operation of a general EUREKA-147-based broadcast receiver. When a user arbitrarily inputs a frequency, that is, a broadcast is finally selected by the frequency manual input method, the audio is finally output. It is showing the process until it occurs. As shown in FIG. 3, when an ensemble is selected according to a frequency input by a user through the key input unit 28, the controller performs FIB parsing and displays corresponding services according to the result, and the user thus When one of the displayed services is selected, the receiver controls baseband to output audio or video. On the other hand, if the service is not available as a result of FIB parsing, this is indicated.

In the above-described configuration, in the case of the frequency manual input method, a dual user selects a desired service while displaying only a service according to the ensemble, and in the case of the frequency auto-scan method, each of the plurality of scanned ensemble The following services are stored in the controller's built-in memory and displayed for user selection.

However, in the case of the frequency manual input method, that is, when a user inputs a randomly inputted frequency and selects a broadcast present in the corresponding frequency, to select a desired service each time, a desired service is transmitted in a specific region. There is a problem in that the user directly inputs the frequency band in memory.

In addition, even in the frequency auto-scan method, it is difficult to distinguish whether the user is currently receiving a service or an ensemble of which frequency by additionally adding a searched service additionally to the service selected by the user. Accordingly, the user remembers the currently available service from the receiver's service lists, in which the receiver scans at a specific area in the past where the receiver transmits a service different from the current location and the scan result at the current location is stored randomly. There is a problem that must be selected. Also, in converting a service, it is not possible to distinguish whether or not a service to be selected exists in a different ensemble from which an ensemble to which the current receiving service belongs is consequently increasing the time from service selection to final reception.

The present invention has been made to solve the above-mentioned problems, and is applied to a device including an Eureka-147-based digital audio broadcasting receiver and systematically organizes and stores the contents of a digital audio broadcasting service received in a database. The aim is to provide a broadcast receiver based on EUREKA-147 that allows the user to quickly and easily select the service he / she wants.

The present invention for achieving the above object is a EUREKA-147 based broadcast receiver configured to provide a service according to a frequency selected by frequency manual input or frequency auto-scan, wherein the frequency manual input or frequency auto-scan It is possible to simultaneously control whether the current service can be received for the resultant service, an ensemble and service component to which each of the services belongs, and a service database in which PTY information for each service or service component is stored and information stored in the service database. Characterized in that it comprises a controller for sorting according to the elements.

In the above-described configuration, the service database has a respective index in simultaneously presenting and sorting the ensemble and service component to which each service belongs and the PTY for each service or service component according to each element at the same time. It is desirable to have a structure for storing frequency information, ensemble labels, service IDs and labels, service component indexes, PTYs, and active tags in a bundle.

Furthermore, it is preferable to further include a service component database that independently manages the service component elements following the service separately from the service database.

1 is an ensemble structure diagram of an Eureka-147 system,

2 is a hardware block diagram of a typical Eureka-147 based broadcast receiver;

3 is a flowchart illustrating the operation of a typical EUREKA-147 based broadcast receiver;

4 is a hardware block diagram of a EUREKA-147 based broadcast receiver of the present invention;

5 is a flowchart showing a service storing order in a EUREKA-147 based broadcast receiver according to the present invention;

6 is a view showing a structure of a service DB stored by FIG. 5;

FIG. 7 illustrates a structure of a service component DB stored by FIG. 5;

8 is a flowchart illustrating a service search and presentation method in a EUREKA-147 based broadcast receiver according to the present invention;

9 is a block diagram showing a part of the configuration of the FM and DAB multifunction apparatus according to another embodiment of the present invention,

10 is a block diagram showing some components of a digital video output device and a DAB / DMB multifunction apparatus according to another embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10: tuner, 12: DAC,

14: OFDM decoder, 16: audio decoder,

18: packet MUX, 20: DAC,

22: speaker, 24: synchronization detection unit,

26, 26 ＇, 26＂: controller, 28: key input,

30 :: display, 32: DB,

40: EUREKA-147 DAB, 42: FM_RDS,

44: audio switch, 46: display,

48: video controller, 50: EUREKA-147 DAB / DMB,

52: DVB / HDTV / DVD, 54: DAC

Hereinafter, various embodiments of a broadcast receiver based on EUREKA-147 having a database structure of the present invention will be described in detail with reference to the accompanying drawings.

4 is a hardware block diagram of a broadcast receiver based on EUREKA-147 of the present invention, the same reference numerals are assigned to the same parts as the configuration of FIG. As shown in Fig. 2, according to the receiver of the present invention, there is a database 32 in which the contents of services and service components are systematically and efficiently stored, and the controller 26 queries the database 32 for the user. By selecting the service and the service component contents which can be selected by the user in a systematic manner, the user can easily and quickly select the desired service.

5 is a flowchart showing a service storage order in the EUREKA-147 based broadcast receiver of the present invention. As shown in FIG. 5, according to the present invention, when correct FIB information is received through a frequency scan process, and it is determined that DAB broadcast information (ensemble) exists at a corresponding frequency, the FIB is parsed to store related information.

In more detail, first, it is searched whether a service exists in a corresponding frequency by a frequency manual input method or a frequency auto-scan method, and then a search is performed in the DB where service data is stored. As a result of the search, if there is corresponding frequency information, FIG 0/2 is parsed to secure subchannel information, and if it is determined whether the number of the corresponding subchannels secured is the same as the number of subchannels stored in DB, The service storage process is terminated by considering that the same information is already stored in the DB.

However, if the corresponding frequency information does not exist, it should be added as new DB information. For this purpose, FIG 0/0 is first parsed to generate an index. Subsequently, the FIG 1/0 is parsed to store ensemble label information, and the received FIG 0/2 information is parsed to obtain sub-channel information including service ID and actual audio for n services retrieved, respectively. Allocate memory by allocating it as a base. Next, the FIG 0/8 is parsed in the allocated memory to match the subchannel information obtained from FIG 0/2 with the service component information to form a service array in the service, and FIG 0/17 for the service array thus configured. Parse and store the PTY code.

Here, the PTY code refers to a broadcast type of a corresponding service component such as Jazz and Classic, and stores only the PTY code value defined by the European Telecommunication Standard Institute (ETSI) for efficient memory usage.

Also, FIG 1/1 and FIG 1/4 are parsed for the user interface to store label information of each service and service component, and finally, an active tag is set to on. Furthermore, even if the secured number of subchannels is not the same as the number of subchannels stored in the DB, the above-described FIG 0/2 parsing step is performed.

6 is a diagram illustrating a structure of a service DB stored by FIG. 5. As can be seen in FIG. 6, the data stored through the process of FIG. 5 includes information related to an ensemble, a service, a service component, and a Pty (program type). ) Dynamically structured according to the number. The DB stores the result of the new ensemble selection according to the scan result of the frequency manual input method or the frequency auto-scan method, but also includes DAB or DMB reception information in other regions, and the ensemble and the following services or services that can be received at present. Whether or not a component can be received can be classified by an active tag.

FIG. 7 is a diagram illustrating a structure of a service component DB stored by FIG. 5. As shown in FIG. 7, a subch (sub channel) on a main service channel (MSC) allocated as a service component is redundantly used for each service component, so that the amount of memory required is reduced. It is stored in a service component DB separate from the service DB, which stores only the DB Index and the total number of service components in the service. In the stored DB, the user can search for and select a service using the method shown in FIG. 8 by using the service and PTY directly linked to the index.

8 is a flowchart for describing a service search and presentation method in a EUREKA-147 based broadcast receiver according to the present invention. As shown in Fig. 8, the user can select a desired item by operating a corresponding key button on the key input unit. That is, when the user selects an ensemble from the service search menu, the controller displays a corresponding service list on the display, and when a desired service is selected in this state, the controller searches the DB for a lower service component and displays it on the display. In this state, the user can finally select the desired service component.

9 is a block diagram showing some components of the FM and DAB multifunction apparatus according to another embodiment of the present invention. As shown in FIG. 9, the DAB or DMB receiver according to the present invention may be used in various digital broadcasting devices including the EUREKA-147 function, such as a composite device having an FM reception function supporting an FM receiver or RDS and a DVB related composite device. There is a number. That is, when the user selects either the EUREKA-147 based DAB 40 or the FM (FM_RDS) 42 having the FM and RDS functions, the external controller 26 'controls the audio switch 44. Select one of the analog audio outputs and output it to the final audio output.

10 is a block diagram showing some components of a digital video output device and a DAB / DMB multifunction apparatus according to another embodiment of the present invention. As shown in FIG. 10, when the user selects one of the EUREKA-147 based DAB or DMB 50 and the block 52 having a video output function such as DVB, HDTV, DVD, etc. according to the present invention, Since both methods have a digital output, the controller 26 'selects one of the two pulse cod modulation (PCM) signals to be output and outputs the audio through the DAC 54. Also in the case of the video output, the video controller 48 is output from the video output from the DAEK / DMB 50 based on the EUREKA-147, DVB, HDTV, and DVD block 52, etc., by the control of the external controller 26 '. One of the video output signals is selected and output to the final display device.

The EUREKA-147-based broadcast receiver of the present invention is not limited to the above-described embodiment, and may be variously modified and implemented within the range allowed by the technical idea of the present invention. In addition, the 'broadcast receiver' used in the claims reveals that it is used as a general concept of the multifunction apparatus of FIG. 9 or FIG. 10 including the DAEK or DMB receiver based on the EUREKA-147.

According to the EUREKA-147 based broadcast receiver of the present invention as described above, by storing the ensemble, service, service component, etc. in the form of a DB structure having an index, the system can receive each service according to the user's intention, unreceivable service and In the above DB, the user can easily perform a function such as whether or not the service to be searched is transmitted or not, and sorting according to Pty (program type), whereby the user can easily and quickly select a desired service. have.

Claims (3)

A EUREKA-147 based broadcast receiver configured to provide a service according to a frequency selected by frequency manual input or frequency auto-scan, A service database storing current reception of a service obtained as a result of the frequency manual input or frequency auto-scanning, an ensemble and service component to which each of the services belongs, and PTY information for each service or service component; And a controller which controls to simultaneously express the information stored in the service database and arranges the information according to each element. The method according to claim 1, wherein the service database is configured to represent each index in order to simultaneously represent and sort according to each element whether or not it is currently receivable, an ensemble and service component to which each service belongs, and a PTY for each service or service component. And a structure for storing frequency information, an ensemble label, a service ID and a label, a service component index, a PTY, and an active tag as a bundle. 3. The EUREKA-147 based broadcast receiver as claimed in claim 1 or 2, further comprising a service component database for separately managing a service component element following the service separately from the service database.