KR100359665B1 - Wireless data communication terminal with a digital audio reproduction and a reserved reception function - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless data communication terminal having digital audio reproduction and reservation reception functions. The present invention relates to a wireless data communication terminal having a digital audio reproduction function and a reservation reception function. By receiving the digital audio data or by setting the desired time in advance to reserve the songs to be transmitted from the digital audio server, the digital audio data is pre-selected from the digital audio server during bedtime or when there is not much wireless data communication connection. The present invention relates to a device for receiving and reproducing and a control method thereof.

The present invention provides a wireless data communication connection unit 211 for transmitting / receiving voice calls and wireless data and corresponding data communication protocols, a function related to real-time decompression and reproduction of digital audio data, and a wireless data communication connection unit 211. Digital audio playback processing unit 231 for storing and receiving the received digital audio data, and setting the reception function of the wireless audio communication terminal and the digital audio player, and a) downloading and accessing the digital audio server at any time. B) a function of receiving a reserved digital audio data by connecting to an audio server at a reserved time, and c) processing a call during a digital audio playback. By using the limited bandwidth of the wireless data network, it is possible to receive high quality digital audio data without a direct connection with the computer. On the user side, the digital audio data can be transmitted by setting a reservation at a discount time or during bedtime. There is an advantage.

Description

Wireless data communication terminal with a digital audio reproduction and a reserved reception function

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless data communication terminal having digital audio reproduction and reservation reception functions. The present invention relates to a wireless data communication terminal having a digital audio reproduction function and a reservation reception function. By receiving the digital audio data or by setting the desired time in advance to reserve the songs to be transmitted from the digital audio server, the digital audio data is pre-selected from the digital audio server during bedtime or when there is not much wireless data communication connection. The present invention relates to a device for receiving and reproducing and a control method thereof.

Digital audio is a medium that provides sound quality equivalent to CD in digital form due to the spread of computers and development of data communication network. It exists as digital data in PCM form or compressed by various compression methods (MP3, AAC, WMA, Real Audio ..,). Conventional apparatus for reproducing this is difficult to reproduce new digital audio data without using a computer in a way that receives a high-quality digital audio data from a digital audio server or a network using a computer to decompress and reproduce it. Recently, with the development of wireless data communication network, the use of mobile phone is rapidly increasing, and it is also coming out as a single product that combines digital audio playback device with mobile phone. And a combination of digital audio playback devices. As a result, when playing new digital audio data, it is difficult to directly connect with a computer, or the new digital audio is difficult to play in an environment in which the computer cannot be used.

The present invention has been made to solve the problems of the conventional digital audio reproducing apparatus as described above, and an object of the present invention is to provide a wireless data communication terminal capable of reproducing and reserving digital audio data. Another object of the present invention is to provide a digital audio reservation receiving and reproducing method for reproducing and reserved digital audio data using a wireless data communication terminal. In addition, by integrating, it is possible to receive, store and play digital audio data using a wireless data communication network even when the user is on the move or when the computer is not available. Also, the actual transmission bandwidth of the current wireless data communication network has a high transmission rate of digital audio data. Rain at (64kbps-128bps) Because it can take a lot of time with relatively small direct transfer has to be possible to reserve, as well as to store and play digital audio data receiving calls while off time or bedtime.

1 is a configuration diagram of a wireless data communication system for digital audio.

2 is a wireless data communication terminal according to an embodiment of the present invention.

3 is a flow chart of download control from a digital audio server.

4 is a flow chart of reservation reception setting control.

5 is a flow chart of reservation reception process control.

6 is a flow chart of a call processing control during reproduction and reproduction of digital audio data.

★ Explanation of symbols for main parts of drawing

111: wireless data communication terminal having a digital audio function

115: wireless data communication service center

117: digital audio server

211: wireless data communication connection

231: digital audio playback processing unit

232: Digital audio signal processor (DSP)

233: TIMER circuit for setting the reserved reception time

235: RAM for storing the connection information of the digital audio server when receiving reservation

236: Memory for storing digital audio data

239: AUDIO CODEC

240: LCD DISPLAY

In order to achieve the above object, the wireless data communication terminal according to the present invention is a wireless data communication terminal 111 for reproducing and reserve digital audio data, and through the mobile communication base station 113, to provide a wireless data communication service Connect to the wireless data communication service center 115 in charge, and receive digital audio data by wirelessly connecting to the digital audio server 117 connected to the wireless data communication service center 115 through the data communication network 116 including the Internet. A wireless data communication unit 211; And reproducing the digital audio data received through the wireless data communication unit 211, setting a predetermined reserved reception time for connecting to the digital audio server 117 at a desired time, and transmitting the predetermined time to the wireless data communication unit 211 at the reserved reception time. And a reproduction and reservation receiving unit 231 for requesting reception of digital audio data from the digital audio server 117. Preferably, the reproduction and reservation receiving unit 231 performs real-time compression of the digital audio data. A DSP 232 for executing a release program and controlling reproduction and scheduled reception of digital audio data; A timer circuit 233 for setting a reservation reception time and generating a predetermined reservation reception signal at the reservation reception time; A ROM 234 for storing a real-time decompression program, a predetermined program for reproducing and scheduled reception of digital audio data; Distinguish the predetermined program data, the connection information including the predetermined call number for connecting to the wireless data communication service center 115, the network address of the digital audio server 117 and the data communication protocol, and the tune of the selected digital audio data. A RAM 235 for storing a number; A digital audio I / O interface unit 237 for processing reproduction of digital audio data; And an audio codec unit 239 for generating a ring tone according to a call. Further, in order to achieve the above another object, the digital audio data reservation receiving method according to the present invention is directed to the present invention. A digital audio data reservation receiving and reproducing method for reproducing and pre-receiving digital audio data by using a wireless data communication terminal, comprising: a selection step of selecting digital audio data to be connected to and received from a digital audio server 117; A reservation setting step of setting a reservation reception time in the timer circuit 233; Stores the call information for accessing the wireless data communication service center 115, the network address of the digital audio server 117, the connection information including the data communication protocol, and the music classification number of the selected digital audio data in the RAM 235. A storage step; A connection step of connecting to the digital audio server 117 using connection information according to the weak reception signal generated by the timer circuit 233; A download step of downloading the digital audio data; And a reproducing step of reproducing the downloaded digital audio data. Preferably, the connecting step includes receiving GPS information including location information and time information of the base station through the mobile communication base station 113. GPS receiving step; A comparison step of comparing the received time information with the reservation reception time; And a signal generation step of generating a reservation reception signal by the timer circuit if the time information and the reservation reception time are the same. More preferably, the reproducing step includes a predetermined time according to a call made by the DSP 232. A signal detecting step of detecting a call signal; A playback stop step of the DSP 232 pausing the playback of the digital audio data; An audio codec unit 239, which generates a ring tone; And a releasing step of releasing the pause when the call ends. Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that the detailed description of the related configuration and known functions may unnecessarily obscure the object of the present invention, the detailed description thereof will be omitted.

FIG. 1 schematically illustrates a configuration diagram of a wireless data communication system for digital audio according to the present invention, and functional blocks unnecessary for the description of the present invention are omitted. The wireless data communication system of digital audio includes a wireless data communication terminal (hereinafter referred to as a wireless data communication terminal) having a function of reproducing and reserved reception of digital audio, a headset 118 consisting of a microphone and headphones, and a wireless data communication terminal 111 ) And the mobile communication base station antenna 112, the mobile communication base station 113, and the mobile communication base station 113, which are responsible for the transmission and reception of data between the wireless data communication service center 115 and the wireless data communication terminal ( 111 is connected to a base station controller 114 for providing mobile station information 113 and GPS information, a wireless data communication service center 115 in charge of a wireless data communication service, and a wireless data communication service center 115. And a digital audio server 117 connected to the data communication network 116 including the Internet.

FIG. 2 illustrates a wireless data communication terminal having digital audio playback and reservation reception functions according to an embodiment of the present invention, which corresponds to the wireless data communication terminal 111 in FIG. 1 and is largely responsible for wireless data communication. And a part 231 which is responsible for digital audio reproduction and reservation reception. The unit 211 in charge of wireless data communication includes an antenna 220, an RF and IF circuit unit 212, and a BASE BAND processor that are responsible for transmitting / receiving wireless data through the mobile communication base station 113 and the base station antenna 112. 213 and the RF INTERFACE section for controlling the RF circuit section, the CDMA / DFM processing section 214 of the transmission / reception data, and the CDMA / DFM processing section 214 are responsible for processing the vocoding data during transmission / reception and wireless data communication. A memory unit 216, a keypad, and a display that control the components of the unit 211 and store programs related to the functions of the CPU 215 and the CPU 215 for performing a wireless data communication protocol and performing a voice call function. An I / O interface unit 217 for processing and a vocoder unit 218 for supporting a voice call are included.

The unit 231, which is responsible for digital audio reproduction and reservation reception, performs audio signal processing DSP 232 for controlling and executing a real-time decompression program, digital audio reproduction, and reservation reception function according to the digital audio data type. And a ROM 234 for storing a program for controlling the digital audio real-time decompression of the DSP 232 for audio signal processing and the control of the unit 231 in charge of digital audio reproduction and reservation reception, and a digital audio server at a desired time. A TIMER circuit 233 used for setting a reserved reception time for connecting to 117, a RAM 235 for storing and reserved information for program data and a reserved connection, and a reception unit 211 for wireless data communication; Digital audio storage MEMORY section 236 (FLASH MEMORY or RAM MODULE or other storage medium is possible) for storing digital audio data received through, Digital audio I / O interface unit 237 for processing digital audio playback and LCD screen, keypad 238 for digital audio control, LCD display unit for displaying wireless data communication information and digital audio playback information 240, an audio codec unit 239 for generating digital audio, a microphone, and a ringing tone. The present invention is not limited to the specific preferred embodiment of FIG. 2 described above, and any person skilled in the art to which the present invention pertains within the scope of the present invention may make various changes.

By the basic functions and configuration of the wireless data communication terminal according to the present invention, a) a process of downloading by connecting to the digital audio server at any time; b) receiving the reserved digital audio data by connecting to the audio server at the reserved time; c) and the process of pausing and making a ringing tone during a call during digital audio data reproduction will be described in more detail with reference to FIGS. 3, 4, 5 and 6, and other functions outside the claims of the present invention will be described. Omit.

3 is a control flowchart illustrating a process of downloading digital audio data from the digital audio server 117 in the wireless data communication terminal 111 at an arbitrary time. Data communication between the wireless data communication terminal 111 and the digital audio server 117 uses a mobile communication antenna 112, a mobile communication base station 113, a base station controller 114, a wireless data communication service center 115 and the Internet. Through the data communication network 116 to be included, unless otherwise described, data communication between the wireless data communication terminal 111 and the digital audio server 117 shall be performed through the above-described process. Referring to the procedure, the wireless data communication unit 211 first connects to the wireless data communication service center 115 by using the corresponding call number using the communication keypad 221 of the I / O interface unit 217 ( The digital audio server 117 is connected to the corresponding digital audio server 117 through the data communication network 116 connected to the wireless data communication service center 115 using the communication keypad 221 (step 312). The digital audio server 117 selects the desired digital audio using the communication keypad 221 of the I / O interface unit 217 (step 313). The wireless audio communication is performed from the digital audio server 117 via the wireless data communication network. The digital audio data is transmitted to the data communication terminal 111 (step 314). The data received by the wireless data communication terminal 111 is digitally controlled under the control of the DSP 232 via the unit 211 in charge of wireless data communication.It is stored in the video storage MEMORY (236) (step 315). The digital audio storage MEMORY in step 315 refers to the digital audio storage MEMORY 236 of the wireless data communication terminal 111. When the transmission is completed, the CPU 215 sets the MESSAGE for selecting the next song to the I / O interface unit. Step 313, step 314, step 315, and step 316 are repeatedly performed if the user wants to display the next song through the LCD display unit 240 connected to the communication keypad 221. If not desired, the CPU 215 of the wireless data communication unit 211 performs a function of terminating the connection with the digital audio server 117 and a control function of terminating the connection with the wireless data communication service center 115 (step 317). . After that, the wireless data communication terminal 111 is in a transmission / reception standby state.

4 is a flowchart of a reservation reception setting control for accessing the digital audio server 117 to receive digital audio data at a desired time. After setting the reservation reception function mode using the digital audio control keypad 238 (step 411). Next, the communication unit 211 in charge of wireless data communication uses the communication keypad 221 to first connect to the wireless data communication service center 115 using the corresponding call number (step 412). The digital audio server 117 is connected to the corresponding digital audio server 117 according to the data communication connection protocol through the data communication network 116 connected to the wireless data communication service center 115 by using the reference numeral 221 (step 413). Select the desired digital audio using the communication keypad 221 (step 414). At this time, not only one song but also a plurality of songs can be selected. The time for reservation reception is set by setting the TIMER circuit 233 using the digital audio control keypad 238 (step 415). 232) leaves MESSAGE as to whether or not to cancel the download function setting on the LCD display via the digital audio I / O interface unit 237 (step 416). When selected, information required for connection at the time of reservation, 1) wireless data communication service center call number, 2) network address and data communication protocol of digital audio server, and 3) selected digital audio song identification number are stored in RAM 235. (Step 417). Step 418 refers to the RAM 235. After canceling the download function setting or performing step 417, the CPU 215 terminates the connection with the digital audio server and also terminates the connection with the wireless data communication service center. Perform step 419. After that, the wireless data communication terminal 111 is in a data transmission / reception standby state.

FIG. 5 is a control flowchart illustrating a process of receiving digital audio data from the digital audio server 117 by the wireless data communication terminal 111 at the reserved time using the information set for the reserved reception of FIG. 4. The wireless data communication terminal 111 performing data communication using the base station 113 periodically receives GPS information of the base station controller BSC through the mobile communication base station 113 and the base station antenna 112. The GPS information is received through the base station antenna 112 and the location information and time information of the base station 113 is used as a reference time of the transmission / reception. If the received time is equal to the time set in the TIMER circuit 233 for reservation reception, the TIMER circuit 233 notifies the DSP 232 of the reservation reception and the DSP 232 starts the reservation reception function (step 512). ). Step 511 refers to the TIMER circuit 233. The DSP 232 reads the connection information from the RAM 235 and passes it to the CPU 215. The CPU 215 performs a control function of first accessing the wireless data communication service center according to the connection information (step 515). Upon completion of the connection, the DSP 232 transmits the digital audio server network address and the corresponding data communication protocol information. The CPU 215 provides a control function for connecting to the digital audio server 117 by using a network address and a protocol (step 516). The DSP 232 functions to control reading and transmitting to the digital audio server 117 via the CPU 215 (step 517). The digital audio data begins to be downloaded and passes through the wireless data communication service center 115 to the terminal. Is stored in the digital audio storage memory under the control of the DSP 232 via the wireless data communication unit 211 (step 518). Step 519 refers to the digital audio storage MEMORY 236. If there is a next song from the RAM 235, steps 517, 518, step 519, and step 520 are performed. If not, the CPU 215 terminates the connection with the digital audio server 117 and also controls the connection with the wireless data communication service center 115 (step 521). After that, the wireless data communication terminal 111 is in a data transmission / reception standby state.

Fig. 6 illustrates a call processing control flow diagram during reproduction and reproduction of digital audio data. [0027] Upon starting reproduction of digital audio from the digital audio control keypad 238, the DSP 232 starts digital audio data from the digital audio storage MEMORY 236. Read-out is performed to decompress in real time by a program of the ROM 234 according to the compression form of the corresponding digital audio data, and is output to the AUDIO CODEC 239 as PCM data (step 612). Step 611 refers to the digital audio storage MEMORY 236. At this time, the digital audio reproduction information is displayed through the LCD DISPLAY 240. If there is an end of playback from the digital audio control keypad 238, the DSP 232 ends the playback and if not, the playback function continues (step 613). If a signal for notifying the call is notified to the DSP 232 under the control of the CPU 215 (step 614), the DSP 232 detects the call (step 615) and switches the playback of the digital audio to the pause function ( Step 616), a call tone is generated through the AUDIO CODEC (step 617). After confirming whether or not to make a call from the communication keypad 221 (step 619), a signal that is not desired to be called is received by the CPU 215. If so, the CPU 215 requests the DSP 232 to cancel the playback pause function (step 618) and the DSP 232 releases the playback pause function and then continues the playback function (step 618). If desired, the call is made (step 620) and the call is terminated. However, if it is finished (step 621), playback pause is canceled (step 618), and the digital audio data that was being played back is continuously played.

As described above, the present invention integrates digital audio playback and reservation reception functions into the wireless data communication terminal to integrate digital audio data even when the user is on the move or when the computer is not available. There is an advantage in that high-quality digital audio data can be received and played back at a discount time when there is not a lot of city or call charges.

Claims (5)

As a wireless data communication terminal 111 for reproducing and making reservations for digital audio data, Connected to the wireless data communication service center 115 in charge of wireless data communication service through the mobile communication base station 113, and connected to the wireless data communication service center 115 through the data communication network 116 including the Internet. A wireless data communication unit 211 wirelessly connecting to the digital audio server 117 to receive the digital audio data; And Reproduces the digital audio data received through the wireless data communication unit 211, sets a predetermined reception time for connecting to the digital audio server 117 at a desired time, and sets the wireless data communication unit at the reservation reception time. And a reproduction and reservation receiving unit (231) for requesting reception of the digital audio data from the digital audio server (117) at (211). The method of claim 1, The reproduction and reservation receiving unit 231, A DSP 232 for executing a real-time decompression program of the digital audio data and controlling reproduction and scheduled reception of the digital audio data; A timer circuit 233 for setting the reservation reception time and generating a predetermined reservation reception signal at the reservation reception time; A ROM 234 for storing the real-time decompression program and a predetermined program for reproducing and scheduled reception of the digital audio data; Connection information including a predetermined program data, a predetermined call number for connecting to the wireless data communication service center 115, a network address of the digital audio server 117, and a data communication protocol, and selected digital audio data. A RAM 235 for storing a song identification number; A digital audio I / O interface unit 237 for processing reproduction of the digital audio data; And And an audio codec unit 239 for generating a ring tone according to a call. A digital audio data reservation receiving and reproducing method for reproducing and prereceiving digital audio data by using the wireless data communication terminal of claim 2, Selecting a digital audio data to be connected to the digital audio server 117 and received; A reservation setting step of setting the reservation reception time in the timer circuit 233; Distinguishing the song from the connection information including the call number for accessing the wireless data communication service center 115, the network address of the digital audio server 117, and the data communication protocol and the selected digital audio data. A storing step of storing a number in the RAM; A connection step of connecting to the digital audio server (117) using the connection information according to the reservation reception signal generated by the timer circuit (233); A downloading step of downloading the digital audio data; And And a reproducing step of reproducing the downloaded digital audio data. The method of claim 3, wherein The connection step, A GPS receiving step of receiving GPS information including location information and time information of the base station through the mobile communication base station 113; A comparison step of comparing the received time information with the reservation reception time; And And a signal generation step of generating, by the timer circuit, the reservation reception signal if the time information and the reservation reception time are the same. The method of claim 3, wherein The regeneration step, A signal sensing step of detecting, by the DSP 232, a predetermined call signal according to the call; A playback stop step of the DSP 232 pausing the playback of the digital audio data; A ring tone generation step of the audio codec unit 239 generating the ring tone; And And releasing the pause when a call is terminated.