KR20030057356A - Wireless network audio system - Google Patents

Abstract

PURPOSE: A radio network audio system is provided to realize one audio system that a plurality of portable station users use in different ways. CONSTITUTION: A base station(100) compresses audio data accessed from a storage medium for storing the compressed audio data in an HDD(Hard Disk Drive) or transmitting the compressed audio data to an external sound output device. The base station accesses the audio data stored in the HDD for wirelessly transmitting the audio data through a radio network connecting unit or compressively restoring the audio data to transmit the restored audio data to the external sound output device. The base station generates and stores identification information required for accessing the audio data according to a command of a user. A portable station(200) wirelessly receives the audio data from the base station for storing the audio data in an inner memory or compressively restoring the audio data to be output. The portable station requests an audio data list stored in the HDD and requests transmission of the audio data selected among the received list. A receiver station(300) is connectable with the portable station for charging an inner battery of the portable station with electricity, and processes an audio signal output from the portable station for outputting audible sounds.

Description

Wireless network audio system {WIRELESS NETWORK AUDIO SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to network audio systems, and more particularly to a wireless network audio system in which multiple users can enjoy audio while using different systems in different ways.

In general, a person who wants to listen to music using an audio system takes a method of selecting and listening to a desired song at a place where the system is installed. In such a typical audio system, since only music provided from one audio source (broadcast channel, media, etc.) is reproduced and outputted, multiple listeners cannot listen to different music through one system.

In addition, in the typical audio system as described above, there is a disadvantage that the place of listening music is limited. In other words, since music was available only at the place where the speaker is installed or at the place where the audio system is installed, the audio system does not satisfy the needs of various consumers and the marketability is gradually declining even though the dissemination is common with television. It came to the situation.

However, as short-range wireless communication technology is integrated into an audio system, methods for solving the above problems have been continuously proposed. One of them is a method of wirelessly transmitting audio data from a main body, receiving the same from a receiver located at a short distance, and transmitting the audio data through a speaker. However, such an audio system also does not allow a large number of users to access a single system to listen to their desired music.

Therefore, it would be necessary to develop a system that allows multiple people to access audio information played in or stored in a system in different spaces and to view the accessed audio information.

In addition, the current audio system can be classified into a portable system and a portable system that is not very mobile, such a system has a disadvantage that the user must purchase separately as needed.

Therefore, if a portable audio system and an extractive system form one audio system and can share audio information among these system components, many users can conveniently select and listen to the audio according to their preferences. Could be.

Accordingly, an object of the present invention is to establish an audio system so that music can be enjoyed without regard to the installation place of the audio system, and a plurality of users can access one system to wirelessly enjoy audio information desired by each user. The present invention provides a wireless network audio system.

It is still another object of the present invention to provide a wireless network audio system capable of building a portable audio system and a living audio system as one network system, and sharing audio information between audio systems constituting the network system.

1 is a block diagram of a wireless network audio system according to an embodiment of the present invention.

2 is a block diagram of a base station 100 in a wireless network audio system configuration according to an embodiment of the present invention.

3 is a block diagram of a portable station 200 in a wireless network audio system configuration according to an embodiment of the present invention.

4 is a block diagram of a receiver station in a wireless network audio system configuration according to an embodiment of the present invention.

5 is a diagram illustrating a signal transmission flow between a base station 100 and a portable station 200 in a system according to an embodiment of the present invention.

Wireless network audio system according to an embodiment of the present invention for achieving the above object;

The audio information accessed from a storage medium can be compressed and stored in a storage means or transmitted directly to an external sound output device. The audio information stored in the storage means can be accessed and transmitted wirelessly or decompressed through a wireless network connection. A base station configured to transmit and transmit identification information necessary for accessing the stored audio information according to a user command;

Receives audio information wirelessly from the base station and stores it in an internal memory means or decompresses and outputs it in real time. One or more portable stations requiring the transmission of information.

Therefore, the user can play and listen to the audio information stored in the CD or the storage means at the place where the base station is installed, and if necessary, play and listen to the audio information stored in the portable station while carrying and moving the portable station. The portable station can reproduce and listen to audio information transmitted from the base station in real time. Thus, multiple portable station holders have access to one base station, which in turn has the advantage that multiple users can access one audio system.

Furthermore, the present invention is connected to the portable station and supplies charging power to the station to charge the internal battery included in the portable station, as well as to process the audio signal that is decompressed and reproduced and output from the portable station to the speaker. It further comprises a receiver station for outputting an audible sound through.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

First, FIG. 1 is a block diagram of a wireless network audio system according to an embodiment of the present invention. The system includes a base station 100, a portable station 200, and a receiver station. Station 300).

The base station 100 may compress audio information accessed from a storage medium such as a CD, a DVD, or a memory card to be stored in an HDD as a storage means or directly transmitted to an external sound output device, and access the audio information stored in the storage means. It transmits to the sound output device by wireless transmission or decompression by wireless transmission through a wireless network connection, and generates and stores identification information necessary to access the stored audio information according to a user command. The detailed configuration of the base station 100 will be described with reference to FIG. 2.

Meanwhile, the portable station 200 wirelessly receives the audio information from the base station 100 and stores the data in the internal memory means or reproduces and reproduces the data in real time. The portable station 200 transmits a request for transmitting the audio information list stored in the storage means. Request transmission of the selected audio information from the display list received in response. Such a portable station 200 is an accessory of the base station 100 and can be purchased for a family number. The portable station 200 additionally performs a role of a remote controller for remotely controlling the base station 100. The configuration of the portable station 200 is shown in detail in FIG. 3 and the description thereof will be described later.

Finally, the receiver station 300 is connected to the portable station 200 and charges the internal battery provided in the station 200, processes the audio signal that is decompressed and reproduced and output from the portable station 200, and then the speaker. Through the role of outputting audible sound through. That is, the receiver station 300 plays a role of a power charger of the portable station 200, and plays a role of a speaker that reproduces an audio signal reproduced by the portable station 200 as an audible sound. The configuration of this receiver station 300 is also shown in FIG.

Hereinafter, the configuration and operation of each station 100, 200, and 300 will be described with reference to FIGS.

2 is a block diagram of a base station 100 in a wireless network audio system configuration according to an embodiment of the present invention.

Referring to FIG. 2, first, the optical recording medium reproducing unit 102 accesses and outputs audio information from a storage medium such as a CD or a DVD. The optical recording medium reproducing unit 102 may be replaced with a storage medium such as a memory card. The audio information stored in the storage media may be audio data according to a CD or DVD format, or may be in the form of an mp3 file. Depending on the data format of the audio information accessed from the storage medium, the data may be compressed through the codec 106 and stored in the HDD 112 or directly in the HDD 112 without a compression process.

The interface unit (I / F unit) 104 outputs audio information output from any one of the optical recording medium reproducing unit 102 and the codec 106 to be described later to an audio output device such as a television system. To perform. Since the data output from the optical recording medium reproducing unit 102 and the codec 106 are digital data, conversion means for converting the digital data into an analog signal is further provided when the sound output device requires the input of the analog signal. Should be.

Meanwhile, the codec 106 compresses audio information accessed from an optical record medium or a memory card, or compresses and decompresses the compressed audio information and outputs the compressed audio information. The codec 106 decodes audio information having a DVD / CD / MP3 format and encodes the audio information in any one of the above formats. The codec 106 may be implemented in software or hardware according to a system. In addition, the codec 106 may not perform operations on other devices by encrypting or encoding audio information differently according to unique identification information of the base station 100. This can be interpreted as a way to protect the copyright of the audio information.

The controller 108 controls overall system operation according to a user command input through the user interface 114 or the portable station 200 to be described later. In order to control overall operation of the system, the controller 108 basically includes a memory in which control program data is stored. As an example of the system control operation, the control unit 108 controls the optical recording medium reproducing unit 102 or the HDD 112 to access the audio information selected by the user. In addition, it is possible to control the system so that the audio information reproduced from the playback unit 102 or the HDD 112 is transmitted to the external device through the I / F unit 104 or the wireless network connection unit 1 116. In addition, the control unit 108 automatically generates or stores identification information matching the same when the audio file is stored in the HDD 112 according to a user command in the internal memory or the HDD 112. The matching of the identification information and the audio file enables access to the selected audio file. For reference, reference numeral 110 in FIG. 2 shows a controller incorporating a codec implemented in software.

The HDD 112, which is a means for storing audio information, serves to store audio information provided by the codec 106 or directly provided from the optical recording medium reproducing unit 102 or a memory card. The HDD 112 may be configured to be detachable from the base station 100 and to interface with a PC, such as a hard rack, in consideration of compatibility and expandability with a PC. In addition to the HDD 112, various types of auxiliary storage devices may be employed as the storage means.

The user interface unit 114 may use any one of a remote control receiver and a key input unit as a means for receiving a user command, and display means (indicator or display window) for notifying the operation state of the base station 100 to the outside. It includes more.

The base station 100 can receive a user's command without providing a remote control receiver and a key input unit, which is a case of using a voice recognition algorithm. To this end, the controller 108 may control the system by separating voice data from data received through the wireless network connection unit 1 116 which will be described later, and comparing the separated voice data with the stored data.

The wireless network access unit 1 116 wirelessly transmits audio information read from the HDD 112. The wireless network connection unit 1 116 may be implemented by employing any one of a wireless LAN and a Bluetooth module. The wireless network connection unit performs wireless transmission and reception of audio information as well as system control data between the base station 100 and the portable station 200 to be described later.

The base station 100 may further include an audio source processor 118. The audio source processor 118 receives an analog audio source from an audio source input unit and converts the analog audio source into digital audio data. A tuner is mentioned as such an audio source input part. In addition, the base station 100 may further include a radio receiver, and may further include a general interface unit (USB, IEEE1394, etc.) to enable communication with an external device including a PC. Through the interface unit, the base station 100 may receive audio information such as a music file from a PC and store the same in the HDD 112.

The base station 100 described above may perform an independent audio system function without the portable station 200 or the receiver station 300 described later. That is, the base station 100 and the speaker or sound output device and the A / V output device are connected through the interface unit 104 to play and listen to one music file stored in the HDD 112.

Hereinafter, the operation of the base station 100 having the above-described configuration will be described. The operation of the base station 100 may be classified by an operation mode, which is set by a user.

First, it may be assumed that the storage mode of the audio information is the first operation mode. The storage of the audio information can be classified according to the source of providing the audio information. That is, it can be classified into the storage from the optical record carrier playback unit 102 to the HDD 112, the storage from the memory card to the HDD 112, the storage from an external source such as a PC to the HDD 112, and the like. When any one of various sources is selected as described above, audio information provided from the source is compressed through the codec 106 or directly transmitted to the HDD 112 according to the data format of the audio information and stored. As an example, the digital audio data of the CD format (ISO 9660 standard) accessed by the optical recording medium reproducing unit 102 is compressed and coded by the codec 106 and stored as one audio file on the HDD 112. In this case, the user inputs identification information (file name, title name) of the audio file to be stored / before or after the audio file is stored. With this input, the control unit 108 of the base station 100 matches and manages the stored audio file and the identification information, so that it can be accessed later.

If the memory card is selected as a source for providing an audio file such as mp3 instead of the optical recording medium reproducing unit 102, the audio file accessed from the memory card by the control unit 108 passes directly through the codec 106 to the HDD. Will be stored at 112.

In order to select the audio file to be stored by the user in the above-described first operation mode, it is preferable that the user first recognizes the audio information recorded in the audio source. Therefore, the controller 108 may display the information recorded on the recording medium through the display means provided or the connected A / V output device.

On the other hand, it can be assumed that the playback mode of the audio information is the second operation mode, which can be divided into a playback mode from the HDD 112 and a playback mode from an audio source (optical recording medium, tuner, PC, etc.). have.

Referring to the playback operation from the HDD 112, if there is a playback selection of one of the stored audio information, the controller 108 controls the HDD 112 to read out the file. Then, the audio file read out from the HDD 112 is decompressed through the codec 106 and output through the A / V output device through the I / F unit 104, so that the user selects the audio file selected by the A / V output device. You will be able to watch through.

If the reproduction from the optical recording medium is selected, the audio signal reproduced and output by the optical recording medium reproducing unit 102 is output directly to the A / V output device through the I / F unit 104, so that the user You will be able to watch audio files played on your computer.

Meanwhile, another operation mode that can be performed by the base station 100 may include an audio file transmission mode. The transmission mode of the audio file is a mode in which the file requested to be transmitted by the portable station 200 to be described later is read from the HDD 112 and transmitted through the wireless network connection unit 1 116. By performing such a transmission mode, the portable station 200 can download and store an audio file and can also play and output it in real time.

Finally, an operation mode that can be performed in the base station 100 may include an edit mode of identification information. That is, in order to select audio information stored in the HDD 112, specifically audio files, identification information for identifying each file should be listed. Therefore, the controller 108 receives identification information such as a file name genre and a title name from the user before or after storing the file and manages the matching information with the corresponding file, whereby the audio file can be accessed only by selecting the identification information. The mode in which such identification information is input or changed can be defined as the edit mode.

Hereinafter, the configuration of the portable station 200 will be described.

3 is a block diagram of a portable station 200 in a wireless network audio system configuration according to an embodiment of the present invention.

Referring to FIG. 3, first, the wireless network connection unit 2 202 is configured to wirelessly receive audio information from the base station 100 and may be implemented as one of a wireless LAN and a Bluetooth module.

The controller 204 generally controls the operation of the portable station 200 system. A memory for storing control program data therein is provided therein. Control operation of the controller 204 For example, the controller 204 controls the audio information stored in the audio file storage 206 to be described later according to a user command or performs data communication with the base station 100 to perform audio. Request the file transfer.

The audio file storage unit 206 is a memory for storing audio information received from the base station (BS) 100, and is preferably implemented as a flash memory that is compact and portable.

The codec 208 serves to compress and decompress and output audio information read from the audio file storage unit 206, and the audio reproducing unit 210 processes the audio information decompressed and decompressed by the codec 208. Amplify the output. The amplified audio signal is output through an audio output terminal such as an earphone terminal.

The interface unit 214 transmits audio data and supplies charging power between the portable station 200 and the receiver station 300 to be described later.

The charging unit 216 is for supplying driving power to the portable station 200 system and includes a battery and a charging circuit. The battery is charged by the charging power supplied from the receiver station 300 to be described later, and the charging circuit controls the charging. The battery may use a large capacity lithium ion battery.

The user interface unit 218 includes a plurality of key buttons and a display unit for controlling the portable station 200 and the base station 100. The display unit displays an initial menu for selecting an operation mode of the portable station 200 or a list of audio files transmitted from the base station 100.

The portable station 200 may further include a tuner for receiving a radio broadcast, and may further include a microphone for inputting a voice command. In this case, the controller 204 packetizes the voice signal input through the microphone as voice data and controls the transmission.

The portable station 200 described above may be implemented in combination with a general portable wireless telephone. That is, when the portable station 200 itself functions as a mobile phone, a sound source can be downloaded using the wireless internet network of the mobile phone itself and stored in the audio file storage unit 206, and the downloaded file is stored in the wireless network connection unit 2 ( It may also transmit to the base station 100 via 202.

The portable station may also be implemented in combination with a device such as a PDA. In this case, it is also possible to additionally use various input means possessed by the PDA.

Hereinafter, an operation of the portable station 200 having the above-described configuration will be described with reference to FIG. 5.

First, the portable station 200 also includes a playback mode in which an operation mode is reproduced with an audio file stored with the base station 100 and a transmission mode for transmitting to the base station 100. And a mode for downloading an audio file from the base station 100. When the portable station 200 receives the audio file from the base station 100, stores and plays the audio file,

First, as shown in FIG. 5, when the user turns on the portable station 200 (step 500), the controller 204 displays an initial menu (step 502). Mode items constituting the initial menu should basically include a playback mode, a download mode, and a file transfer mode. The play mode refers to playing an audio file stored in the audio file storage unit 206, and the download mode refers to a mode in which an audio file is received from the base station 100. The file transfer mode refers to a mode for transmitting an audio file to the base station 100. In addition, the initial menu may include an edit mode item for changing or generating identification information of an audio file. This initial menu is preferably programmed to match the initial menu displayed on the base station 100. This is because the portable station 200 can be used as a remote controller of the base station 100.

If one of the displayed initial menus is selected, for example, a transmission mode is selected, the controller 204 requests (step 506) the transmission of the upper menu according to the selection mode to the base station 100. In response to the request, the base station 100 reads the upper menu according to the selection mode from the HDD 112 and transmits the upper menu to the portable station 200 (step 508). The upper menu is a list of identification information generated by a user, and may be simply a list of titles of audio files by illustrating the simplest structure. Such a list of titles may be categorized by category as the top item to provide a search convenience and may be classified by title name as the category sub-item.

As an example, when the upper menu is received, the control unit 204 of the portable station 200 displays it on the display unit provided in the user I / F unit 218 (step 510). Then, the user will select a music file (audio file) to be listened to from the displayed audio file identification list (step 512). Then, the controller 204 requests the transfer of the music file selected by the user (step 514), and the controller 108 of the base station 100 reads the selected file from the HDD 112 and transmits it (step 516). . Then, the control unit 204 of the portable station 200 stores the audio file transmitted through the network connection unit 2 (202) in the audio file storage unit 206 (step 518). In this case, it may be desirable to transmit the identification information of the corresponding audio file together with the audio file. This is to identify the corresponding audio file in the portable station 200 itself.

As described above, a plurality of audio files may be stored in the audio file storage unit 206 of the portable station 200. The stored audio file may be played by selecting a play mode in an initial menu and selecting one audio file from a list of audio files displayed thereafter. When the playback of the audio file is started, the audio file starting to be read from the audio file storage unit 206 is decompressed by the codec 208 and then signal-processed and level amplified by the audio playback unit 210 and then the audio output terminal. Is output via Accordingly, the user can play and listen to the audio file selected by the user through the earphone or the speaker connected to the audio output terminal.

Meanwhile, the user may play and listen to the audio file transmitted from the base station 100 in real time using the portable station 200. That is, the audio file wirelessly transmitted from the base station 100 is received through the wireless network connection unit 2 202 of the portable station 200, and the received audio file is input to the codec 208 through the control unit 204. Decompression. The audio file data thus decompressed is then processed by the audio signal reproducing unit 210 and output through the audio output terminal, so that the user reproduces the audio file obtained by accessing the base station 100 directly through the portable station 200. I can listen. This means that a plurality of users can access the HDD 112 provided in the base station 100 by using each portable station 200. Of course, if there are audio file access requests from multiple portable stations 200 at the same time, a process will be needed to mediate them.

As described above, the user can receive the list of audio files stored in the base station 100 using the portable station 200 as well as remotely control the base station 100. The audio file transmitted from the base station 100 can be downloaded and later played back, and the audio file transmitted from the base station 100 can be reproduced in real time. Of course, when the tuner 212 is provided to enable radio broadcast reception, the user may listen to a general radio broadcast through the tuner 212. In addition, in the case of having an interface that can be connected to a computer system such as a PC, the audio file may be downloaded from the PC, stored in the audio file storage unit 206, and vice versa.

In conclusion, since the above-described portable station 200 can be used to access the HDD 112 provided in the base station 100, a plurality of users use one portable station 200 to access one audio system. You can access and listen to different music.

Hereinafter, the receiver station 300 capable of charging the removable battery to the portable station 200 will be described.

4 is a block diagram of a receiver station 300 in a wireless network audio system configuration according to an embodiment of the present invention.

The receiver station 300 has a charging power supply unit 308 as shown in FIG. The charging power supply unit 308 generates and outputs a charging voltage for charging the battery provided in the portable station (PS) 200 by inputting AC commercial power. The charging power output from the charging power supply unit 308 is supplied to the portable station 200 through the interface unit 302. As such, the two stations must be physically connected in order for the charging power generated by the receiver station 300 to be supplied to the battery of the portable station 200. This can be implemented by mounting the portable station 200 to a charging port provided in the receiver station 300. In addition, it is possible to transmit the audio signal through the physical connection between the two stations (200,300). That is, the interface unit 302 provided in the receiver station 300 provides a power supply path of charging power and also provides a transmission path of an audio signal reproduced from the portable station 200.

On the other hand, the audio signal processing unit 304 processes the audio signal input through the interface unit 302 and the audio signal input unit 310 to be described later, the level amplified output, the audio output unit 306 is a level amplified audio signal It acts as a speaker to convert and output to audible sound. The audio signal processing unit 304 and the audio output unit 306 may be referred to as an audio reproduction unit. For reference, when it is determined that the portable station 200 is connected to the receiver station 300 through the interface unit 214, the control unit 204 of the portable station 200 decompresses and restores the audio data through the codec 208. By transmitting the to the receiver station 300, the user can listen to the audio file played in the portable station 200 through the speaker of the receiver station 300.

Meanwhile, the receiver station 300 further includes an audio signal input unit 310 for receiving an audio signal from an external device. Accordingly, the receiver station 300 may output an audio signal output from an external audio device through a speaker. In this case, its amplifier function should be bypassed.

As described above, the receiver station 300 plays a role of supplying charging power to the portable station 200, and also serves as an amplifier for outputting an audio file played by the portable station 200 as an audible sound. In some cases, the user may play and listen to the audio file using the receiver station 300.

Therefore, the audio system constituting the present invention can be used as an independent audio system, while sharing the files stored in other stations with each other, so that a variety of users can conveniently and conveniently store a system without having to buy a single system. Kinds of stations can be selectively used.

As described above, the present invention receives and stores audio information from various audio sources and makes the stored audio information accessible to a plurality of portable station users, so that a plurality of users can use one system as well as to taste. It has the advantage of selecting and listening to the right music.

In addition, the present invention configures and provides a portable station having a mobility, a base station and a receiver station capable of data communication with the portable station as one audio system, so that a user can select one station system and listen to music for convenience. You can enjoy the convenience.

The present invention has been described with reference to the accompanying drawings, but the present invention is not limited thereto, and a person skilled in the art can make many various modifications without departing from the scope of the present invention. It should be interpreted by the claims.

Claims (17)

In a wireless network audio system, The audio information accessed from a storage medium can be compressed and stored in a storage means or transmitted directly to an external sound output device. The audio information stored in the storage means can be accessed and transmitted wirelessly or decompressed through a wireless network connection. A base station which transmits to the mobile station and generates and stores identification information necessary for accessing the stored audio information according to a user command; Receives audio information wirelessly from the base station and stores it in an internal memory means or decompresses and outputs it in real time. At least one portable station requiring transmission of information. The receiver station of claim 1, further comprising: a receiver station that is connectable to the portable station and charges an internal battery included in the station, processes an audio signal that is decompressed and reproduced and output from the portable station, and outputs an audible sound through a speaker. Wireless network audio system characterized in that. The method of claim 1 or 2, wherein the base station; An optical recording medium reproducing unit for accessing audio information from the storage medium; A codec for compressing audio information accessed from the optical recording medium or compressing and decompressing compressed audio information; A hard disk drive for storing compressed audio information as said storage means; An interface unit for interfacing audio information output from any one of the optical record carrier and the codec to the sound output device; A wireless network connection unit for transmitting audio information read out from the hard disk; A user interface unit for receiving a user command; And a control unit for controlling the overall operation of the system according to a user command. The wireless network audio system of claim 3, further comprising an audio source processor for receiving an analog audio source and converting the analog audio source into digital audio data. 5. The wireless network audio system of claim 4, wherein the base station further comprises a radio receiver. The wireless network audio system of claim 4 or 5, wherein the controller separates voice data from data received through the wireless LAN and controls the system. The wireless network audio system of claim 6, wherein the base station further comprises an interface unit for performing data communication with a computer system. The wireless network audio system of claim 7, wherein the user interface unit is one of a remote control receiver and a key input unit. 4. The wireless network audio system of claim 3, wherein the base station further comprises: display means for externally displaying a current operating state of the system. The wireless network audio system of claim 3, wherein the wireless network connection unit is any one of a Bluetooth module and a wireless LAN. The method of claim 3, wherein the portable station, A wireless network connection unit for wirelessly receiving audio information from the base station; A flash memory for storing the received audio information; A codec for compressing and restoring audio information read from the flash memory; An audio reproduction unit for signal-processing and outputting the decompressed audio information; A user interface including a plurality of key buttons and a display; A charging unit including a battery and a charging circuit for supplying system driving power; An interface unit for interfacing charging power to the charging unit; And a control unit for access control of the audio information or data communication with the base station according to a user command. 12. The wireless network audio system of claim 11, wherein the portable station further comprises a tuner for receiving a radio broadcast. The method of claim 11 or 12, wherein the portable station further comprises a microphone for inputting a voice command, characterized in that the control unit of the portable station packetized the voice signal input through the microphone to the voice data transmission control Wireless network audio system. The wireless network audio system of claim 11 or 12, wherein the controller of the portable station remotely controls the base station according to a user command. The wireless network audio system of claim 11 or 12, wherein the wireless network connection unit of the portable station is one of a wireless LAN and a Bluetooth module. In a wireless network audio system, The system includes a base station and one or more portable stations and receiver stations, A) the base station; a) an optical recording medium reproducing unit for accessing audio information from the storage medium; b) a codec for compressing audio information accessed from the optical recording medium or for decompressing compressed audio information; c) a hard disk drive for storing compressed audio information; an interface unit for interfacing audio information output from one of the optical recording medium reproducing unit and the codec to the sound output device; e) a wireless network connection for transmitting audio information read out from the hard disk; f) a user interface for receiving a user command; g) a control unit for controlling the system-wide operation according to a user command, B) the portable station; a) a network connection for wireless data communication with the base station; b) a flash memory for storing wirelessly received audio information; c) a codec for compressing and decompressing audio information read from the flash memory; an audio reproducing unit for signal-processing and outputting the decompressed audio information; e) a user interface comprising a plurality of key buttons and a display; f) a charging unit including a battery and a charging circuit; g) an interface unit for interfacing charging power to the charging unit; h) a control unit for access control or data communication with the base station according to a user command; C) the receiver station; a) a charging power supply unit supplying charging power to the charging unit; b) an interface unit which provides a power supply path of charging power and provides a transmission path of an audio signal reproduced from the portable station; and c) an audio reproduction unit for processing the audio signal transmitted through the interface unit and converting the audio signal into an audible sound. The wireless network audio system of claim 16, wherein the receiver station further comprises an audio signal input unit for receiving an audio signal from an external device.