KR100425295B1 - music file recording/reproducing module for AV system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music recording / playback module of an AV system, comprising: an audio data encoded by a predetermined encoding method in a music recording / playback module for mounting input audio data into a module rack provided in a playable AV system; Communication interface unit for receiving from the AV system; A decoder for decoding audio data encoded by the encoding scheme; And control information on the music recording / playback module, and when the music record / playback module is mounted in the module rack, transfer the control information to a base module provided in the AV system, and wherein the base module is received. And a control unit for receiving and executing a control command sent based on the control information and transmitting the audio data decoded by the decoder to the AV system. Thereby, a music recording / playback module is provided that can receive and store music files from the outside and decode the received music files to be playable. Accordingly, it is possible to receive and record or play various music files such as MP3 transmitted through the Internet.

Description

Music file recording / reproducing module for AV system

The present invention relates to an AV (Audio / Video) system, and more particularly, to a music recording / reproducing module mounted in an AV system capable of reproducing various AV source data.

Digital terrestrial broadcasts complying with the Advanced Television Systems Committee (ATSC) standard began in the United States in November 1998, and consumer electronics companies were able to receive digital broadcasts and digital versatile discs for recording and playing digital broadcasts. ) It is launching various digital media products such as players and digital camcorders.

In particular, with the advent of various digital media devices in the digital TV market, potential consumers are further confused. The various standards developed every year not only add complexity to digital TVs, but also pose a threat to the user's purchase of high-tech products into outdated products in a short time.

New digital media products, such as digital broadcast receivers, satellite broadcast receivers, DVD players, hard disk recorders, and Internet access devices, increase the number of operations that a user must learn and the number of remote controllers. What's more, you have to pay a lot to buy the digital media products you need. In addition, the space they occupy in the house is not small. Furthermore, separate power lines are needed to power each digital media product. Connecting a monitor (digital TV) to each line, like a DVD player, is very cumbersome.

On the other hand, the advent of digital media products has suggested the possibility of forming a home network by bringing together various home appliances in a home. When a home network is implemented, not only a single device can control various devices in the home, but also a remote device can control devices in the home through the Internet.

Furthermore, the development of digital technology has made it possible to provide music as digital data, which has been provided as analog data. In particular, with the development of compression technology and error correction technology, music files having a relatively large size compared to general text data have been freely transmitted and received through the Internet.

Accordingly, an object of the present invention is to provide a music recording / reproducing module mounted on an AV system embodying a plurality of digital media devices as one system to receive and store music files from the outside and to play the received music files. .

1A and 1B are external views of a modular TV system, which is an embodiment of an AV system;

2 and 3 is a reference diagram for explaining the connection structure of the base module and the function expansion module according to the present invention through the module rack 16,

4 is a block diagram of the base module 100 and the music recording / playback module 200;

5 is a block diagram of a music recording / playback module 240 as an embodiment of FIG. 4;

6 is a communication protocol structure employed for communication between the base module 100 and the music recording / playback module 200;

7 is a flowchart illustrating a process of playing a music file through the music recording / playback module 240;

8 is an example of a main page;

9 is an example of an index page of the music record / playback module 240;

10 is a flowchart for explaining a process of recording a music file through the music recording / playback module 240;

11 is an example of an index page for controlling the digital broadcast reception module.

The above object is, according to the present invention, in a music recording / reproducing module for mounting in a module rack provided in an AV system capable of playing back input audio data, the audio data encoded by a predetermined encoding method from the AV system. Communication interface unit for receiving; A decoder for decoding audio data encoded by the encoding scheme; And control information on the music recording / playback module, and when the music record / playback module is mounted in the module rack, transfer the control information to a base module provided in the AV system, and wherein the base module is received. And a control unit for receiving and executing a control command sent based on the control information, and for transmitting the audio data decoded by the decoder to the AV system.

The music recording / playback module may include an audio storage unit in which audio data is recorded; And an audio recording unit for recording the encoded audio data in the audio storage unit, wherein the control unit receives a recording command input from a user and transfers the recording command to the audio recording unit.

The music recording / reproducing module further includes an audio reading unit for reading encoded audio data recorded in the audio storage unit, the decoder decoding the encoded audio data read by the audio reading unit, Preferably, the controller receives a read command input from a user, transfers the read command to the audio reader, and transmits the audio data decoded by the decoder to the AV system.

The audio storage unit may include an external memory card storing audio data encoded according to the encoding scheme; And an external memory card mounting unit to which the external memory card is detachably mounted.

Preferably, the encoding scheme is an MP3 scheme, and the decoder is an MP3 decoder. The AV system includes an IEEE 1394 interface module, and the communication interface unit is capable of communicating with an IEEE 1394 interface module provided in the AV system. Is particularly preferred.

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

1A and 1B are external views of a modular TV system, which is an embodiment of an AV system.

Referring to FIG. 1A, a modular TV system includes a display device 18 supported by a cradle 10. The display device 18 may be implemented as a CRT, a FLCD, a field emission display (FED), a plasma display panel (PDP), or the like. The module rack 16 is installed at the center of the cradle 10 placed below the display device 18, and the speaker 12 is disposed at the left and right sides of the module rack 16.

The front of the module rack 16 is formed with a plurality of module insertion holes so that the functional expansion modules can be detachably mounted. Referring to FIG. 1A, the module insertion holes are horizontally continuous so that a plurality of function expansion modules can be inserted in a line. Referring to FIG. 1B, the module insertion holes are vertically provided. At least one function expansion module 17 may be inserted into the module rack 16.

The function extension module 17 is a module for extending the function of the modular TV system. For example, if a user purchases a DVD module and mounts it on the modular rack 16, the modular TV system can be equipped with a DVD player function.

The base module (not shown) is installed at the rear of the module rack 16. The base module can send and receive control commands according to the function extension module and the client-server model. In other words, the base module receives the necessary control information from the function expansion module mounted on the module rack 16, outputs it to the display device 18, displays it, and transmits a user input according to the displayed control information to the function expansion module. The function extension module provides the AV data according to the received user input to the base module, and the base module processes the received AV data and outputs the received AV data to the display device 18 and / or the speaker 12.

The function extension module stores control information about itself. When the function expansion module is mounted in the module rack 16, the control information is transmitted to the base module. The base module transmits a control command to the corresponding function extension module based on the received control information. As an example, the function extension module may store at least one index page as control information. In addition, the base module is provided with a browser for searching for a function extension module. The browser displays a main page on which the selection information about the at least one function extension module is displayed to the user, and requests the corresponding index page from the function extension module selected by the user through the main page and displays the corresponding index page to the user. In addition, the browser transmits the user's control command input through the displayed index page back to the function extension module.

2 and 3 are reference diagrams for explaining the connection structure between the base module and the music recording / playback module according to the present invention.

Referring to FIG. 2, the base module 100 includes a plurality of module connection connectors 110. Each connector 110 is provided with two communication ports 112 and 114 and one power connector 116. The communication ports 112 and 114 and one power connector 116 are installed in the module insertion hole (not shown) provided in the module rack 16 so that each function expansion module can be easily inserted and connected.

The music recording / reproducing module 200 is one of the function expansion modules 17 of FIGS. 1A and 1B. Referring to FIG. 3, two communication ports 292 and 294 and one power connector 296 are provided. It includes. The function expansion module 200 is surrounded by a casing, and the communication ports 292 and 294 and the power connector 116 are formed to protrude out of the casing. Accordingly, when the function expansion module 200 is mounted in the module mounting hole formed in the module rack 16, the corresponding ports are interconnected to electrically connect the base module 100 and the function expansion module 200. Furthermore, when the plurality of function expansion modules 200 are mounted in the module rack 16, the base module 100 and the plurality of function expansion modules 200 are connected in a daisy chain manner. However, the connection method of the base module 100 and the plurality of function expansion modules 200 may be determined in various ways as needed. Here, the communication ports 112, 114, 292, and 294 provided in the base module 100 and the function expansion module 200 are electrically connected to the communication interface units 101 and 201, respectively.

4 is a block diagram of the base module 100 and the music recording / playback module 200.

Referring to FIG. 4, the base module 100 includes a communication interface 101, a signal processor 110, a video processor 104, an audio processor 105, a user input unit 106, a memory unit 107, and And a control unit 108.

The memory unit 107 includes a RAM, a ROM, or a flash memory according to this embodiment. The RAM is used as a buffer for processing image data constituting the main page to be described later, the ROM is equipped with a browser for searching the function expansion module 200, and the IP address of the function expansion module 200 is stored in the flash memory. do.

The control unit 108 receives the IP address from the function expansion module 200 mounted in the module rack 16 and executes a browser mounted in the memory unit 107 to execute the function expansion module 200 through the communication interface unit 101. ) And client-server communication.

The user input unit 106 receives a user input input through a command key (not shown) or a remote controller and transmits the received user input to the control unit 108. The communication interface unit 101 exchanges data with the outside. The signal processor 110 divides the AV data received through the communication interface unit 101 into video data and audio data and outputs them to the video processor 104 and the audio processor 105, respectively. The video processor 104 processes the video data output from the signal processor 110 and transmits the video data to the display apparatus 18. The audio processor 104 processes the audio data output from the signal processor 110 to process the speaker 12. Will output In particular, when the digital broadcast signal is input to the MPEG transport stream while the music recording / playback module 200 is set to the recording mode as described below, the signal processor 110 extracts MP3 audio data from the MPEG transport stream. Transfer to the music recording / playback module 240. In addition, the signal processing unit 110 when the decoded audio data is received from the music recording / playback module 200 while the music recording / playback module 200, which is a function expansion module according to the present invention, is set to the playback mode. The received audio data is transferred to the audio processor 105.

The music recording / playback module 200 includes a communication interface 201, a decoder 202, and a controller 205. The decoder 202 decodes the encoded audio data according to a predetermined encoding scheme. The controller 205 transmits the audio data decoded by the decoder 202 to the base module 100 through the communication interface 201.

The communication interface units 101 and 201 are implemented as communication interface modules conforming to the IEEE 1394 protocol. However, the communication interface units 101 and 201 may be connected to a Universal Serial Bus (USB) bus, a Peripheral Component Interconnect (PCI) bus, or may be connected to Fast-Ethernet. In addition, it is of course possible to employ other communication protocols that can support the appropriate transmission rate according to the characteristics of the audio data transmitted from the music recording / playback module 200.

5 is a block diagram of a music recording / playback module 240 implemented as an example of FIG. 4.

Referring to FIG. 5, the music recording / reproducing module 240 includes an audio storage unit 242, an audio recording / reading unit 242, an MP3 decoder 243, and an IEEE 1394 interface 246. It also has communication ports 292-1 and 294-1 protruding out of the casing surrounding the exterior and a power supply connector 296-1.

The controller 245 includes a CPU, a ROM, a flash memory, and a peripheral circuit unit. The ROM stores a control program for performing client-server communication with the base module 100. In particular, the ROM stores an index page including control information to be provided to the base module 100. The control information included in the index page is for controlling the music recording / playback module 240. The flash memory stores an IP address of the music recording / playback module 240 and the like.

The audio storage unit 241 includes an external memory card mounting unit 252 on which the external memory card 251 is mounted, and an internal memory 253. The internal memory 253 includes a flash memory and a RAM. In particular, the RAM may be used as a buffer for processing audio data, that is, MP3 files. The external memory card 251 may be implemented as a smart media card. The audio recording / reading unit 242 records MP3 files received from the IEEE 1394 interface 246 in the audio storage unit 241 or the audio storage unit 241, that is, the internal memory 253 or the external memory card 251. Reads MP3 files recorded on. The MP3 decoder 243 decodes the input MP3 file.

MP3 is an encoding algorithm of audio data. The size of a music file on a CD is typically 30-50 MB, but encoding (compressing) using the MP3 algorithm can reduce data capacity to about one-twelfth the original size while maintaining sound quality at about the same level.

The MP3 decoder 243 decodes the music file (audio data) encoded by the MP3 algorithm. The communication interface unit 246 is an IEEE 1394 interface unit module and includes an IEEE 1394 link unit, an IEEE 1394 physical unit, and a processor. The processor controls the IEEE 1394 link unit and the IEEE 1394 physical unit to transmit the MP3 file decoded by the MP3 decoder 243 to the base module 100. That is, the IEEE 1394 link unit cuts the audio data transmitted from the MP3 decoder 243 into frames based on the IEEE 1394 protocol, and delivers the audio data to the IEEE 1394 physical unit. The IEEE 1394 physical unit transmits the received frame in a bit string according to the IEEE 1394 protocol. Accordingly, the bit string is transmitted to the base module 100 through the communication ports 292-1 and 294-1.

6 illustrates a communication protocol employed by the base module 100 and the music recording / reproducing module 240 to perform communication according to a client-server model according to an embodiment of the present invention. It is a reference diagram arranged according to the structure. Referring to FIG. 6, User-Control adopts a GUI in the application layer, and the base module 100 and the music recording / playback module 240 perform client-server communication according to HTTP. It performs packet communication by TCP / IP (ARP), and it can be seen that the physical layer and the data link layer (OSI reference model) are based on the IEEE 1394 protocol. However, the protocol employed in each layer can be variously changed as necessary.

7 is a flowchart for describing a process of playing a music file through the music recording / playback module 240.

Referring to FIG. 7, when power is supplied to the modular TV system (step 701), the client base module 100 checks whether the server music recording / playback module 240 is mounted in the module rack 16. (702).

The mounted music recording / playback module 240 transmits the index page to the base module 100, and the base module 100 installs the provided index page (step 703). At this time, the music recording / playback module 240 transmits the IP address together and the base module 100 stores the received IP address. In this case, the transmitting and receiving of the IP address may be performed independently from the operation 1306.

When the user drives the browser installed in the base module 100 (step 704), the main page as shown in FIG. 8 is displayed (step 705). In the main page, icons indicating the aforementioned various function extension modules M1, M2, M3, M4, M5, M6, M7, and M8 are displayed. M1 is the digital broadcasting receiver module, M2 is the digital satellite broadcasting receiver module, M3 is the cable broadcasting receiver module, M4 is the Internet access module, M5 is the DVD module, M6 is the hard disk drive module, and M7 is the present invention. MP3 module as the music recording / playback module 240 according to the present invention, and M8 denotes the D-VCR module. The icon may be displayed after being transmitted from each function extension module or stored in the base module 100. When the main page is configured such that the icon is called by a browser mounted on the base module 100 and transmitted from each function extension module, the creator of the function extension module prepares and mounts various icons to variously display the icons displayed on the main page. You can change it.

When the user selects the MP3 module displayed on the main page (step 706), the browser mounted on the base module 100 retrieves and displays the index page of the music recording / playback module 240 (step 707). In this case, step 1306 may be omitted and the index page may be directly loaded from the corresponding music recording / reproducing module 240 in step 1314.

As illustrated in FIG. 9, the displayed index page is provided with a GUI-type user interface. The function buttons include a power on / off button PW, a recording button REC, a playback PLAY, and a file search button FS. When the user selects a predetermined function button (step 708), the selected control command (user input) is transmitted to the corresponding music recording / playback module 240 (step 709), and the control received by the music recording / playback module 240 is performed. An operation according to the command is performed (step 710). For example, when the user selects the file search button FS, the music recording / playback module 240 transmits the list information of the music file stored in the audio storage unit 241 to the base module 100, and FIG. 9. A list of music files is displayed as shown in FIG. When a predetermined music file is selected from the list, the selection information is transmitted to the music recording / playback module 240 again, and the audio recording / reading unit 242 of the music recording / playback module 240 transfers the music file to the audio storage unit 241. Read from the MP3 decoder 243 to the MP3 decoder 243 and the MP3 decoder 243 decodes the corresponding music file to the IEEE 1394 interface 246 under the control of the controller 245 to be transmitted to the base module 100. . The base module 100 processes the audio data received from the DVD module 240 and outputs the audio data to the speaker 12 to be reproduced.

10 is a flowchart for describing a process of recording a music file through the music recording / playback module 240.

Referring to FIG. 10, the index page of the music recording / reproducing module 240 as shown in FIG. 9 is displayed (step 1001) through the same steps as steps 701 to 707 of FIG. 7.

The user selects the record button REC to set the music recording / playback module 240 to the recording mode (step 1002). Next, the main page is called and displayed again (step 1003), and then a function extension module for receiving a music file is selected (step 1004). Function expansion modules for receiving music files include a digital broadcast receiving module, an Internet access module, and a hard disk drive module. In operation 1005, the base module 100 displays the index page of the selected function extension module. For example, when the digital broadcast receiving module is selected, an index page as shown in FIG. 11 is displayed.

When the user selects the music file receiving button, the music file is received from the outside, and the base module 100 transmits the received music file to the music recording / playback module 240 (step 1007). The audio recording / reading unit 242 of the music recording / playback module 240 records the received music file in the audio storage unit 241 (step 1008). In particular, when receiving a digital broadcast through the digital broadcast receiving module, since the digital broadcast is received as an MPEG transport stream, the signal processing unit 110 of the base module 100 receives MP3 audio data from the MPEG transport stream transmitted from the digital broadcast receiving module. It extracts and delivers it to the music recording / playback module 240. In this case, the MP3 extraction module for extracting the MP3 audio data from the digital broadcast may be provided in the digital broadcast reception module or the music recording / playback module 240 without providing the MP3 extraction module in the base module 100. When the MP3 extraction module is provided in the digital broadcasting reception module, the MP3 music file is transferred from the digital broadcasting reception module to the base module 100, and the base module 100 transfers the received MP3 music file to the music recording / playback module 240. To pass. When the MP3 extraction module is provided in the music recording / playback module 240, the base module 100 transmits the MPEG transport stream directly to the music record / playback module 240, and the music record / playback module 240 receives the received MPEG. The MP3 music file is extracted from the transport stream and recorded in the audio storage unit 241.

As described above, according to the present invention, there is provided a music recording / reproducing module capable of receiving and storing a music file from the outside and decoding the received music file to be playable. Accordingly, it is possible to receive and record or play various music files such as MP3 transmitted through the Internet.

Claims (6)

A music recording / playback module for mounting on a modular rack provided in an AV system capable of playing back input audio data, A communication interface unit for receiving audio data encoded by a predetermined encoding scheme from the AV system; A decoder for decoding audio data encoded by the encoding scheme; And Control information for the music recording / playback module, and when the music record / playback module is mounted in the module rack, the control information is transmitted to a base module provided in the AV system, and the control in which the base module is received. And a control unit for receiving and executing a control command sent based on the information, and for transmitting the audio data decoded by the decoder to the AV system. The method of claim 1, An audio storage unit in which audio data is recorded; And An audio recording unit for recording the encoded audio data in the audio storage unit, And the controller receives a recording command input from a user and transfers the recording command to the audio recording unit. The method of claim 2, And an audio reading unit for reading encoded audio data recorded in the audio storing unit. The decoder decodes the encoded audio data read by the audio reader, And the control unit receives a read command input from a user, transmits the read command to the audio read unit, and transmits the audio data decoded by the decoder to the AV system. The method of claim 3, The audio storage unit An external memory card storing audio data encoded according to the encoding scheme; And And an external memory card mounting unit to which the external memory card is detachably mounted. The method according to any one of claims 1 to 4, The encoding method is MP3 method, And the decoder is an MP3 decoder. The method of claim 1, The AV system includes an IEEE 1394 interface module, And the communication interface unit is an IEEE 1394 interface module capable of communicating with an IEEE 1394 interface module provided in the AV system.