KR20030088648A - A apparatus and method for providing sound information service of digital radio broadcasting receiver - Google Patents

Abstract

The present invention relates to an apparatus and method for providing sound information service in a digital radio broadcast receiver.

In the present invention, a sound information service providing apparatus in a digital radio broadcasting receiver that provides a digital radio broadcasting service using sound inputted from outside and information data related to the sound, comprising: a key word including data related to sound from a service user; The user interface unit, the sound input from the outside and the information data related to the sound are temporarily stored, and periodically analyzed sound-related information data to determine whether or not similarity with the key words input from the service user, and the determination result According to the present invention, the central control unit converts the sound inputted from the outside and the information data related to the sound into different forms and provides the converted data to the service user. Acids to include a random access memory (RAM) to store.

Through this, it is possible for the service user to prevent a huge waste of time and the waste of resources through the sound information search.

Description

Apparatus and method for providing sound information service in digital radio broadcasting receiver {A APPARATUS AND METHOD FOR PROVIDING SOUND INFORMATION SERVICE OF DIGITAL RADIO BROADCASTING RECEIVER}

The present invention relates to an apparatus and method for providing sound information service, and more particularly, to an apparatus and method for providing sound information service in a digital radio broadcast receiver for searching for and providing sound related information requested from a service user. .

Radio is a device used by so many people that its 100-year history is still widely used today. Conventional analog radio has to be broadcast only by sound, so the contents of the broadcast have been limited and the sound quality of broadcast music has been limited.

However, in recent years, digital radio has been developed and introduced into the broadcasting, which enables the transmission of complex data from the existing simple information transmission.

Digital radio is a new radio broadcasting system in the form of a multimedia service providing not only easy expansion of a large number of channels, but also guaranteeing the sound quality of MP3 files and providing additional data according to the existing analog radio. For example, while transmitting music, data such as lyrics, composer, and singer may be transmitted, or a singer's photo or music video may be simultaneously transmitted.

In addition, if data transmission is made between digital radio and satellite system in the future, the number of broadcast channels that can be selected by the user may be larger than imagined.

However, broadcast transmission and reception systems using such digital radios not only cause service users to experience confusion and difficulty in using the information due to the expanded number of broadcast channels, but also result in waste of time and resources. do.

Accordingly, there is a need for a system and a method for easily searching for and providing sound-related information desired by service users.

Technical problem to be solved by the present invention was created to solve this problem, the sound-related information requested from the service user of the excessive sound data input from the outside through a plurality of service channels (-lyrics according to the song name, composer, singer name The present invention provides an apparatus and method for providing sound information service in a digital radio broadcasting receiver capable of searching for and providing sound similar to a key word including, etc.) and information data related to the sound.

1 is a detailed block diagram of an apparatus for providing sound information service in a digital radio broadcast receiver according to an embodiment of the present invention.

2 is a flowchart sequentially illustrating an operation process of an apparatus for providing sound information service in a digital radio broadcast receiver according to an embodiment of the present invention.

3 is a view for explaining a method of storing acoustic data and X-PAD data according to the present invention.

※ Explanation of code about main part of drawing ※

100: sound information service providing device

110: DAB RF section

120: DAB base band portion

130: user interface unit

140: audio decoder

150: PAD Decoder

160: central control unit

170: RAM

180: FLASH MEMORY

An apparatus for providing sound information services in a digital radio broadcast receiver according to an aspect of the present invention for realizing the above object is to provide a digital radio broadcast service using sound input from outside and information data related to the sound. An apparatus for providing sound information service in a digital radio broadcast receiver, the apparatus comprising: a user interface unit for receiving a key word including data related to sound from a service user; The sound inputted from the outside and the information data related to the sound are temporarily stored, and the information related to the temporarily stored sound is periodically analyzed to determine the similarity with the key word input from the service user, and according to the determination result. A central control unit for converting the sound inputted from the outside and the information data related to the sound into different forms so that the converted data is provided to the service user; And a RAM for classifying and storing the sound converted into different forms and the information data related to the sound.

Also, when it is confirmed by the central control unit that the sound similar to the key word input from the service user and the information data related to the sound have been stored in the RAM, the sound stored in the RAM and the information data related to the sound are stored. And further comprising a flash memory for storing the license.

In addition, a method for providing sound information service in a digital radio broadcast receiver according to another aspect of the present invention is provided in a digital radio broadcast receiver that provides a digital radio broadcast service using sound input from outside and information data related to the sound. A method of providing a sound information service, comprising: a first step of temporarily storing a sound input from outside and information data related to the sound; If a key word including information data related to sound is input from a service user, a second step of periodically analyzing the temporarily stored sound and information data related to the sound to determine similarity with the key word; A third step of converting the sound and the information data related to the sound into different forms according to a result of the similarity determination; And a fourth step of classifying and storing the data converted into the different forms.

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

1 is a detailed block diagram of an apparatus for providing sound information service in a digital radio broadcast receiver according to an embodiment of the present invention.

Referring to FIG. 1, the apparatus 100 for providing a sound information service includes a DAB RF 110, a DAB baseband unit 120, a user interface unit 130, an audio decoder 140, a PAD decoder 150, and a central control unit 160. , A controller, a RAM 170, and a flash memory 180.

The DAB RF 110 acquires airwaves from the RF (Radio Frequency) stage, drops them to an IF signal of 2.048Mhz, and then converts them into a clock of 8Mhz. Through this, the data is generated as data (10-bit data) of a condition that can be interpreted in the baseband.

The DAB baseband unit 120 converts the digital signal (IF signal) applied from the DAB RF 110 and then converts the converted signal by an Orthogonal Frequency Division Multiplexing (OFDM) method. After the demodulation of the converted OFDM signal, the demodulated OFDM signal is reconverted through Time Interleaving and Viterbi decoding conversion. That is, valid digital broadcast data is generated by reconverting a series of compression and conversion processes performed by a transmitter for wireless data transmission. Usually, the DAB baseband unit 120 is composed of one chip.

In addition, the generated digital data is categorized as FIC data (ie, data in which information related to frame length, service level, etc., as basic data for sound output) is recorded.

The user interface 130 performs a specific frequency setting and a sound information service channel setting through a user input signal input from the outside, and inputs a key word input from the outside (for example, when a user wants to listen to a singer's song). Name of a song, etc.) and an estimated request time (eg, 3 days) required for searching the input keyword, that is, an estimated time required by the service user.

In this manner, the service user can input specific data related to the acoustic information (eg, request time for searching for key words and keywords).

In addition, the service user uses a predetermined function button when inputting such sound-related data, and in addition to the function button, the user interface 130 includes an LCD, a keypad, and a microcomputer.

In addition, the FB data classified through the DAB baseband unit 120 is decoded, and the decoded FIC data (information on each service channel, etc.) is output to the outside through the user interface unit 130.

The audio decoder 140 classifies, decodes, and outputs sound-related data among digital data applied by the DAB baseband unit 120 according to the decoded FIC data.

The PAD decoder 150 classifies the X-Programme Associated Data (X-PAD) data transmitted before the sound-related data frame output to the outside through the audio decoder 140, and then decodes the classified X-PAD data. .

X-PAD data is data that provides information related to acoustic data, and has various sizes depending on the length of the information. For example, it is a data packet including a singer, a composer, a lyrics, and the like, which is output as a specific song (sound data) is output.

Meanwhile, the PAD data includes control data such as F-PAD data in addition to the X-PAD data.

The central controller 160 periodically analyzes X-PAD data received from a transmitter through various sound service broadcast channels according to a predetermined analysis period and compares the analyzed X-PAD data with a key word input from a service user. Retrieve similarity In the search, even if there is no similarity, the retrieved X-PAD data and related acoustic data are stored in the RAM 170 to prevent loss of the corresponding data.

At this time, in the corresponding data is stored in the RAM 170, X-PAD data is stored in the form of a text, and the relevant sound data is stored in the form of MP3. However, in this case, if the X-PAD data and related sound data stored in the RAM 170 are not similar to the key word input from the user, the X-PAD data and related sound are inputted and analyzed in the next cycle. Allow data to be stored.

In addition, the X-PAD data and related acoustic data have different frame lengths according to each broadcasting mode (mode 1, 2, 3, 4, etc.) designated by the broadcasting station in consideration of the frequency channel environment and the channels of each country. According to the designated frame length for each mode, the analysis period of the central controller 160 is determined.

In general, mode 1 (less than 375Mhz used for terrestrial waves) designated by many broadcasting stations has a frame length of 96 ms / frame, and mode 2 (less than 1.5 Ghz used for terrestrial waves) has a frame length of 24 ms / frame. In case of mode 3 (3Ghz or less used for satellite / cable), the frame is 24ms / frame in length, and in mode 4 (1.5Ghz or less used for terrestrial wave), the frame is 48ms / frame.

In the present invention, the sound-related data received from the broadcasting station is periodically analyzed through a cycle of 96 ms according to mode 1. In the mode 1, 12 FIG data are embedded within 96 ms, and eight sub channels are configured. These eight sub-channels include six acoustic channels and two data transmission channels, and each acoustic channel includes audio frames, X-PAD data, F-PAD data, and the like.

FIG data is data constituting the FIC, and includes information on each channel (for example, information on a service level of a corresponding sound, start and end addresses of a sound, CU size, and protection information). Data). In addition, the FIC (Fast Information Channel) is a channel that provides related information before the sound channel, and only if this channel exists, sound decoding can be performed smoothly. In this FIC, information on the level of address information, protection information security system, etc. is set. For reference, a CU (Capacity Unit) is a unit of data configured in the FIC, 1CU is composed of 5529bits, 1FIC is composed of 864CU.

The RAM 170 classifies and stores textual X-PAD data and related acoustic data in MP3 form, and includes an audio unit and an X-PAD unit for this purpose. In this case, if the X-PAD data analyzed by the central controller 160 does not have similarity with the key word input from the user, the X-PAD data is immediately deleted and the corresponding sound data of the next frame is stored in the deleted memory area.

Flash memory 180 is stored in RAM 170 when the end of the sound data is recognized according to the analyzed X-PAD data, for example, when a song to be searched for is terminated. It receives and stores the X-PAD data in the form of text and the sound data in the form of MP3.

The flash memory 180 is attached to or detached from the sound information service providing apparatus 100, and the separated flash memory 180 attaches sound and related X-PAD data stored in a computer or PDA to a computer or PDA. To make it available to service users.

An apparatus for providing acoustic information service in a digital radio broadcasting receiver having such a structure will be described in detail with reference to the accompanying drawings.

2 is a flowchart sequentially illustrating an operation process of an apparatus for providing sound information service in a digital radio broadcast receiver according to an embodiment of the present invention.

Referring to FIG. 2, first, the central controller 160 repeatedly checks whether a user input signal has been received from the outside through the user interface 130 (S210).

In this case, the user input signal input from the outside includes a signal for setting a specific frequency and a sound information service channel, etc., as well as a key word for receiving the sound information service (for example, all three albums of the singer GOD's album. Information such as a singer's name or composer's name inputted in case of listening to the information), an estimated time from the key word input date to the provision of the corresponding sound information service, and the like.

That is, the apparatus for providing acoustic information service according to the present invention performs a related function according to an expected time designated by the corresponding service user. For example, if a service user sets a time of 3 hours to find all the songs contained in the 3rd album of the GOD, the service user searches for and provides the corresponding data within the set 3 hours.

Then, as a result of the check, when the relevant data for providing a sound service is input through the user interface unit 130, the central control unit 160 transmits the sound of the specific sound information service channel set by the corresponding service user to the audio decoder 140. It is output through the service channel information on the sound data is output through the user interface unit 130.

In addition, the acoustic data and related X-PAD data are separately stored in the RAM 170 (S220). In this case, the acoustic data and the associated X-PAD data stored in the RAM 170 are stored in the RAM 170 classified into the audio unit 171 and the X-PAD unit 172 as shown in FIG. 3. The stored sound data is in MP3 form, and the X-PAD data is in text form.

Thereafter, the central controller 160 analyzes the X-PAD data stored in the RAM 170 according to a predetermined period (the analysis period when the broadcasting station transmits the corresponding acoustic data according to the mode 1 is 96 ms). In step S230, it is searched for similarity with the key word input from an external service user (S230).

As a result of the search, if similarity is found between the stored X-PAD data in text form and the key word input from the outside, the sound data and related X-PAD data are converted into a predetermined specific form and stored in the RAM 170 (S250). On the other hand, if a search result does not find a similarity between the stored text-type X-PAD data and a key word input from the outside, the acoustic data and the related X-PAD data already stored in the RAM 170 are applied. After deleting from the memory, the deleted memory area stores sound-related data frames received in the next cycle.

Thereafter, the central control unit 160 confirms whether all the sound information requested from the corresponding service user has been stored (S260), and when the check result is completed, the sound data and related X-PAD data stored in the RAM 170 are completed. Is transmitted to the flash memory 180 in the form of a file to be stored (S270).

In this case, the flash memory 180 may be separated / combined with the sound information service providing apparatus 100, and the separated flash memory may be attached to a computer or a PDA to provide sound data and related X-PAD data stored therein. do.

The retrieval of the relevant sound data, the storage of the retrieved data, the file generation, and the like are possible only in a single frequency band, which may be performed at a specific frequency designated by a user or may be performed by specifying an automatic scan mode. In the auto scan mode, the frequency band and service channel for which the current frequency is recognized, that is, the synchronization signal is detected by the digital radio broadcasting receiver, are automatically found and searched in the area. This search is not necessarily possible when the user listens to the radio broadcast through the digital radio broadcast receiver, but only by operating the search mode while the power is turned on.

Thereafter, the central control unit 160 checks whether there is an additional service request from the corresponding service user (S280), and if there is an additional service request, repeats the operation process accordingly, while there is no additional service request, The provision of the sound information service to the user is terminated (S290).

As described above, the apparatus 100 for providing sound information service according to the present invention includes all the songs contained in the third album of the GOD from the service user and additional information related to them (such as the lyrics, the composer, and the music video) within 3 hours. When requested to be provided, the service user can search for sound information by searching whether there is relevant sound data corresponding to the data requested from the service user among the excessive sound data transmitted from the radio broadcasting transmission system, and providing the search for sound information. It helps to prevent waste of time and resources.

The drawings and detailed description of the invention are merely exemplary of the invention, which are used for the purpose of illustrating the invention only and are not intended to limit the scope of the invention as defined in the claims or in the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Apparatus and method for providing a sound information service in a digital radio broadcasting receiver according to the present invention search for sound data requested by a service user among excessive sound data received from the outside, and search for sound data and related additional data in the form of an MP3 file and a text file. By converting and providing the form, the service user can not only prevent a huge waste of time and resource waste by searching the acoustic information, but also increase convenience.

Claims (15)

An apparatus for providing acoustic information service in a digital radio broadcasting receiver for providing a digital radio broadcasting service using a sound input from outside and information data related to the sound, A user interface unit for receiving a key word including data related to sound from a service user; The sound inputted from the outside and the information data related to the sound are temporarily stored, and the information related to the temporarily stored sound is periodically analyzed to determine the similarity with the key word input from the service user, and according to the determination result. A central control unit for converting the sound inputted from the outside and the information data related to the sound into different forms so that the converted data is provided to the service user; And RAM for classifying and storing the sound converted into different forms and the information data related to the sound Apparatus for providing sound information service in a digital radio broadcast receiver comprising a. According to claim 1, When the central controller determines that the sound similar to the key word input from the service user and the information data related to the sound have been stored in the RAM, the sound stored in the RAM and the information data related to the sound are received. Apparatus for providing sound information service in a digital radio broadcasting receiver, characterized in that it further comprises a flash memory (FLASH MEMORY) to store. The method of claim 2, The flash memory, And a flash memory separated from the digital radio broadcast receiver and connected to a service providing device capable of reproducing the sound and information data related to the sound. The method of claim 3, wherein The apparatus for providing a service connected to the flash memory includes a computer and a personal digital assistant (PDA). According to claim 1, The central control unit, When it is determined that the sound input from the outside and the information data related to the sound are similar to the key word input from the service user, the sound input from the outside is converted into a file of MP3 form and the information data related to the converted sound. The apparatus for providing sound information service in a digital radio broadcast receiver, characterized in that for converting to a text file format. According to claim 1, The central control unit, If it is determined that the sound input from the outside and the information data related to the sound are not similar to the key word input from the service user, deleting the sound temporarily stored in the RAM and the information data related to the sound. Apparatus for providing sound information service in a digital radio broadcast receiver. The method of claim 5, The RAM, An audio unit for storing the sound converted into the MP3 file; And X-PAD unit for storing the sound-related information data converted into the text file form Apparatus for providing sound information service in a digital radio broadcast receiver comprising a. The method of claim 5, The central control unit, The sound information service providing apparatus of claim 1, wherein the sound frequency is determined according to a frame length for each broadcast mode designated by a digital radio broadcast transmitter when the analysis period of the sound received from the outside and the information data related to the sound are determined. According to claim 1, The key word is a sound information service providing apparatus for a digital radio broadcasting receiver, characterized in that it includes information on the estimated time required for service requested by the service user. According to claim 1, And the information data related to the sound input from the outside includes program associated data (X-PAD) data. A sound information service providing method in a digital radio broadcasting receiver for providing a digital radio broadcasting service using sound input from outside and information data related to the sound, A first step of temporarily storing a sound input from outside and information data related to the sound; If a key word including information data related to sound is input from a service user, a second step of periodically analyzing the temporarily stored sound and information data related to the sound to determine similarity with the key word; A third step of converting the sound and the information data related to the sound into different forms according to a result of the similarity determination; And A fourth step of classifying and storing the data converted into different forms Sound information service providing method in a digital radio broadcast receiver comprising a. The method of claim 11, wherein The second step, And analyzing the information data related to the sound according to an analysis period determined according to the frame length for each broadcasting mode designated by the digital radio broadcasting transmitter. The method of claim 11, wherein The third step, If it is determined that the key word and the sound and the information data related to the sound are similar, converting the temporarily stored sound into an MP3 file; And Converting the information data related to the converted sound into a file in the form of text Sound information service providing method in a digital radio broadcast receiver comprising a. The method of claim 13, The third step, When it is determined that the key word and the sound and the information data related to the sound do not have similarities, the sound information service of the digital radio broadcasting receiver, wherein the temporarily stored sound and the information data related to the sound are deleted. How to Provide. The method of claim 11, wherein And the key word includes information on estimated service time required by the service user.