KR20000034253A - Method for recording/playing audio for digital television - Google Patents

Abstract

PURPOSE: A method for recording/playing audio for digital television is provided to record high quality audio data on a portable memory card and to play the audio using the audio card. CONSTITUTION: A method for recording audio for digital television includes first thru third steps. At the first step, card information is read and temporarily stored when the memory card(500) is applied. At the second step, audio data played on the digital television is recorded on the memory card(500), when a key signal requiring recording is applied from outside. At the third step, the card information and information on the region of recording are updated. And a method for playing audio for digital television includes first and second steps. At the first step, the data select screen is displayed when a key signal requiring the playback of the audio data recorded in the memory card(500). At the second step, the selected audio data is played when a particular data is selected on the data select screen.

Description

How to save / play back audio on digital television

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to audio storage / playback methods in digital television, and more particularly to audio storage in digital television configured to store and play back audio data output through digital television using a memory card. / Playing apparatus and method thereof.

As is well known, a digital television system compresses and transmits digital video and audio data using a predetermined compression algorithm, for example, a hybrid encoding algorithm, and restores the compressed and transmitted video and audio data to original data to serve a viewer. The information provided in such a digital TV system can be roughly divided into program information, data information, and control information.

In a digital TV system, program information, data information, and control information are formed into a predetermined packet stream, for example, a packet stream in units of 188 bytes, and then carried on a carrier wave.

Program information, for example, represents TV programs provided by each broadcaster for the purpose of being broadcast to subscribers, and includes video information, user information such as caption data, and audio information.

The data information includes information defined according to the service provider, for example, electronic newspaper service information, magazine service information, karaoke service information, and the like.

The control information includes the program ID, channel ID, program name, program brief information, caption service presence, program grade, etc. necessary for demultiplexing and reconfiguring program information or data information of a selected channel from a packet stream carried on a carrier channel. It contains the same program guide information, and is generally written in PMT (Program Map Table).

Therefore, based on the control information included in the packet stream, the receiving side of the digital TV automatically tunes to the carrier including the program of the selected channel, and then demultiplexes only the program information of the channel selected from the multiplexed and transmitted packet stream. By reconstructing, the program information is provided to the viewer.

In this way, the digital TV system provides not only broadcast program information but also various additional services not provided by the existing broadcast system, an electronic newspaper service, a magazine service, and a karaoke service, thereby expanding the viewer's information selection. There is an advantage.

In particular, the audio data included in the program information adopts the Dolby AC-3 (audio coding 3) compression method, and the total of three front channels, two rear channels, and one ultra-low frequency channel (denoted as 0.1 channels). Supporting 5.1 channels provides sound quality comparable to or rather than conventional dedicated audio playback devices.

On the other hand, in each broadcasting channel, a lot of sounds (for example, music, poems, background sounds, sound effects, explanations, etc.) are provided through entertainment programs, movies, dramas, and advertisements. Some of the commercials (eg, commercial music collections, music tapes) are provided for the sound they provide, but most of the sound effects can only be heard while the broadcast is available.

As such, in order to continuously use the sound provided through the broadcast program, a video cassette recorder or an audio system is connected to the television to record the sound output from the television on a tape. .

However, in the case of the conventional television, since it is provided as a mono (or stereo) analog signal, not only does the sound quality deteriorate, but also such a sound is recorded on a magnetic tape or the like. there was.

In addition, when recording the sound provided from the broadcast program, there is an inconvenience of manually operating the storage location on the magnetic tape on which the sound is to be recorded.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described point, and saves high-quality audio data provided by a digital television to a removable memory card from the outside, and uses its own system or another digital television system by using the audio data stored in the memory card. SUMMARY OF THE INVENTION An object of the present invention is to provide an audio storage / playback method of a digital television system configured to be played back.

In order to achieve the above object, in the present invention, in the method for storing and reproducing audio data of a broadcast program reproduced on a digital television in a memory card, the method for storing the audio data is a card when the memory card is mounted. Reading and temporarily storing information; Storing audio data being reproduced on the digital television in the memory card when a key signal for recording from the outside is applied while watching the broadcast program; Updating the card information recorded in the memory card and the temporarily stored card information by adding information on the area where the audio data is stored and information on the audio data when the storing of the audio data is completed; The method of reproducing the audio data may include: displaying a data selection screen based on the card information when a key signal requesting reproduction of the audio data stored in the memory card is applied while watching the broadcast program; And reproducing the selected audio data when specific data to be reproduced is selected on the data selection screen.

1 is a block diagram showing hardware suitable for implementing an audio storage / playback method in a digital television according to a preferred embodiment of the present invention;

2 is a detailed explanatory diagram showing an audio storage / playback method in a digital television according to a preferred embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

100: user operation block 200: system control block

300: digital TV 400: card read / store block

500: memory card 600: menu generation block

Hereinafter, a method of storing and reproducing audio data in a digital television according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2 as follows.

1 is a block diagram showing hardware suitable for implementing a method of audio storage / playback in a digital television according to a preferred embodiment of the present invention.

Referring to FIG. 1, hardware suitable for implementing an audio storage / playback method in a digital television according to a preferred embodiment of the present invention includes a user operation block 100, a system control block 200, and a digital television 300. , The card read / store block 400, the memory card 500, and the menu generation block 600, each of which is configured as follows.

First, the user operation block 100 is composed of a key panel provided in a digital television system or a remote control for the digital television. The key panel and the remote controller are, for example, a power on / off key, a recording key, and a playback. It is provided with a plurality of function keys including a key and the like, and generates a key signal corresponding to the user's key operation, and provides the generated key signal to the system control block 200.

The system control block 200 controls the overall digital system based on the key signal applied from the user operation block 100 or the various signals provided from the respective components of the digital television. In particular, the system control block 200 controls the card read / store block 400 when a card loading signal is applied from the card read / store block 400 when the power is turned on in the digital television or during the normal viewing mode. After reading card information of the memory card 500 and storing the read information in an internal memory (not shown) provided therein, the card reading / storing block 400 uses the card information to read the memory card. The audio data is read from the 500 and the audio data is stored in a predetermined area of the memory card 500. In this case, the card information is information stored in a predetermined area of the memory card 500, for example, a standard storage area set in common with all the memory cards 500, and each of a plurality of audio data stored in the memory card 500. The delimiter and storage location (i.e., address) are recorded.

The digital television 300 is composed of a plurality of functional blocks including a tuner and a demodulator, an MPEG decoder, a video signal processor, an audio signal processor, and a menu generator, which are not shown, and are compressed and multiplexed under the control of the system control block 200. The digital broadcasting signal (i.e., packet stream) is subjected to signal processing (e.g., demodulation, error correction, demultiplexing, decoding, etc.) to provide a predetermined broadcast program to the viewer in video and audio. In particular, when the storage control signal is applied from the system control block 200, the decoded audio data is provided to the card read / store block 400, and when the reproduction control signal is applied, the card read / store block 200 is provided. Audio data is subjected to signal processing (for example, D / A conversion, amplification, etc.) and output to the user through a speaker (not shown) provided in the digital television itself.

The card read / store block 400 is one of several types of card readers well known in the art, and generates a card mount signal when the memory card 500 is mounted in the system, and generates a card detach signal when the card is detached. The generated card loading and detaching signals are provided to the system control block 200.

In addition, by the control of the system control block 200, the audio data provided from the digital television 300 is stored in a predetermined area of the memory card 500, or audio data previously stored in the predetermined area of the memory card 500 is stored. It reads and provides the read audio data to the digital television 300. FIG. In this case, the control signal from the system control block 200 for controlling the menu read / store block 400 may include an address of the memory card 500 to be stored or read.

The memory card 500 includes a data storage area for storing audio data and a standard storage area for storing card information including a data separator of each of a plurality of audio data stored in the data storage area and an address corresponding thereto. Audio data provided from the television is stored by the card read / store block 400.

The menu generation block 600 includes a card screen provided from the system control block 200 by using preset menu configuration information, that is, a menu screen, that is, a plurality of data identifiers (eg, a program name, a song name, etc.). A data selection screen, and the digital television 300 provides information on the configured data selection screen.

Hereinafter, with reference to the accompanying Figure 2, the audio storage / playback method in a digital television according to a preferred embodiment of the present invention will be described in detail.

2 is a detailed explanatory diagram showing an audio storage / playback method in a digital television according to a preferred embodiment of the present invention.

First, when a power-on key signal generated from the user operation block 100 by the user's key operation is applied to the system control block 200 (S10), the system control block 100 is stored in each component member of the digital television. While controlling a power supply block (not shown) to supply power, it is determined whether the memory card 500 is mounted in the card read / store block 400. That is, the card read / store block 400 generates a card loading signal (eg, a high pulse) when the memory card is mounted, and a card removal signal (eg, a low pulse) when the memory card is removed. ), The system control block 200 determines whether the memory card 500 is mounted based on the card loading signal or the card removal signal provided from the card read / store block 400. (S20)

As a result of the determination in step S 20, if a card is mounted in the card read / store block 400, that is, if a card loading signal is provided from the card read / store block 400, the system control block 200 determines that the memory card has been loaded. The card read / store block 400 is controlled to read card information stored in the standard storage area of 500. At this time, the address of the standard storage area of the memory card 500 is stored in the internal memory (not shown) in the system control block 200, and the like. The address of the standard storage area is the same for each memory card 500. It would be more desirable to set the location (address).

The card read / store block 400 reads card information from the standard storage area of the memory card 500 under the control of the system control block 200, and stores the read card information in the system control block 200. In operation S30, the system control block 200 stores the received card information in an internal memory (not shown).

When the card information storage in step S30 is completed, the system control block 200 controls the digital television 300 to perform the normal viewing mode based on the offset information of the normal viewing mode that was previously performed. The digital television 200 performs the normal viewing mode under the control of the system control block 200 (S 40).

On the other hand, as a result of the determination in step S20, if the card is not mounted in the card read / store block 400, that is, if the card detachment signal is provided from the card read / store block 400, the above-described S40 The normal viewing mode of the step is performed.

During the normal viewing mode in step S 40, when the memory card 500 is replaced (S 50), the system control block 2000 updates card information previously stored in the internal memory (S 60). For the replacement of the 500, when the memory card 500 is detached from the card read / store block 400, the card read / store block 400 generates a card detachment signal and controls the generated card detachment signal. Block 200. The system control block 200, which has received the card detachment signal from the card read / store block 400, deletes the card information previously stored in the internal memory. When mounted in the read / store block 400, the card read / store block 400 generates a card mount signal and provides the generated card mount signal to the system control block 200. Subsequently, step S30 is performed. New tower by the same process The card information of the new memory card 500 is stored in the internal memory (not shown) in the system control block 200.

Subsequently, when a key signal requesting storage of audio data from the user operation block 100, that is, a recording key signal is applied by the user's key operation (S 70), the system control block 200 is a channel currently being viewed normally. Control the digital television 300 to provide the card read / store block 400 with audio data extracted from the packet stream of the current channel. In addition, by referring to the card information stored in the internal memory in step S20 or S60, a position (address) of a predetermined storage area in which audio data is not stored is searched for, and a storage control signal including the searched address is generated. To the card read / store block 400.

Accordingly, the digital television 300 provides the audio data separated from the packet stream corresponding to the current channel to the card read / store block 400 and the card read / store block 400 from the system control block 200. The audio data provided from the digital television 300 is stored in the storage area of the memory card 500 corresponding to the received address (S80).

During the operation S80, if the recording end key signal is applied from the user operation block 100 by the user's key operation (S90), the system control block 200 stops the recording operation performed in the operation S80. To control the digital television 300 and the card read / store block 400. Under the control of the system control block 200, the digital television 300 stops providing audio data to the card read / store block 400 and performs only the normal viewing mode, and the card read / store block 400 also operates. The operation of storing the audio data provided from the digital television 300 in the memory card 500 is stopped (S100).

When the step S 100 is completed, the card read / store block 400 provides the system control block 200 with information on the location (address) of the storage area where the storage of the audio data is completed. The system control block 200 updates the card information previously stored in step S 20 or S 60 including the location (address) of the storage area provided from the card read / store block 400 and the audio separator retrieved from the digital television. do. In addition, the system control block 200 controls the card read / store block 400 to update the card information stored in the standard storage area of the memory card 500 with the newly configured card information, and the card read / store block 400 Under the control of the system control block 200, the card information previously stored in the standard information area of the memory card 500 is updated (S 110).

After the operation S110 is completed, when a reproduction key signal is applied from the user operation block 100 by the user's key operation (S 120), the system control block 200 sends a menu generation control signal including card information to the menu generation block. Provided at 600. By the menu generation control signal, the menu generation block 600 constructs card information into a predetermined menu screen, for example, a data selection screen, and provides the digital television 300 with information about the configured data selection screen. The digital television displays the data selection screen at a predetermined position on the monitor which is normally viewed based on the data selection screen information provided from the menu generation block 600. (S 130)

While the S 130 is in progress, if the selection key signal is applied from the user operation block 100 by the user's key operation (S 140), the system control block 200 reads the card to reproduce the audio data selected by the user. The storage block 400 is controlled, and the digital television 300 is controlled to signal output the selected audio data.

The card read / store block 400 reads audio data selected by the user under the control of the system control block 200 from the memory card 500 and provides the read audio data to the digital television 300. The digital television 300 stops the normal viewing mode under the control of the system control block 200, processes the audio data provided from the card reading / storing block 400, and outputs the audio data through a speaker (not shown) (S). 150).

According to the present invention described above, the sound contained in the broadcast program can be easily stored, the stored sound can be reproduced in high quality, and ultimately, there is an effect of partially replacing the existing sound reproducing medium.

Claims (2)

A method of storing and playing back audio data of a broadcast program played on a digital television on a memory card, The method for storing the audio data, Reading and temporarily storing card information when the memory card is mounted; Storing audio data being reproduced on the digital television in the memory card when a key signal for recording from the outside is applied while watching the broadcast program; Updating the card information recorded in the memory card and the temporarily stored card information by adding information on the area where the audio data is stored and information on the audio data when the storing of the audio data is completed; The reproduction method of the audio data, Displaying a data selection screen based on the card information when a key signal for requesting reproduction of audio data stored in the memory card is applied while watching the broadcast program; And reproducing the selected audio data when specific data to be reproduced is selected on the data selection screen. The method of claim 1, wherein the audio data storage method comprises: If the memory card is replaced with another memory card while watching the broadcast program, the method further comprises the step of deleting the previously stored card information, and reading and temporarily storing the card information of the replaced memory card; How to store and play audio data on your TV.