KR20000046207A - Digital portable phone having mp3 regeneration function - Google Patents

Abstract

PURPOSE: A digital portable phone having the MP3 regeneration function is provided to regenerate music stored as the MP3 using a digital portable phone. CONSTITUTION: An MP3 regeneration apparatus(7) is composed of a control unit(9), an MP3 data input unit(11), an MP3 data conversion unit(10) and a music output unit(8). The control unit(9) controls the selection of MP3 patterned music information stored in a memory(15) if the kind of music and the title of a song are selected through a key input unit(3). The MP3 data input unit(11) reads the song selected from the memory(15). The MP3 data conversion unit(10) converts the selected song, read through the MP3 data input unit(11), into an audible band. The music output unit(8) outputs the song, converted into the audible band, through an earphone connection unit(4) or a speaker(16).

Description

Digital mobile phone with MP3 playback

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an MP3 playback system using a digital cellular phone, and more particularly, to a digital cellular phone having an MP3 playback function capable of playing music stored in MP3 on a digital cellular phone.

Typically MP3 stands for MPEG Layer 3, which is one of the audio parts of MPEG technology. Moving Picture Expert Group (MPEG) is a research group established by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) to standardize the compression and multiplexing of video and sound. Due to the new need for data compression standards, MPEG4 for object-oriented multimedia communication over MPEG2 has been announced and is being studied.

Initially standardized, MPEG1 consists of five parts, coding techniques for compressing and storing video and audio up to 1.5Mbps on digital storage devices. Three audio coding techniques are defined in the audio part, which is called layer 1, layer 2, and layer 3, respectively. Each layer is hierarchically backwards compatible, and as the layers increase, the compression performance increases with the complexity of the encoder. MPEG1 and MPEG2 use essentially the same audio coding techniques, but only MPEG2 has been extended to use lower sampling frequencies, such as 16 kHz, 22.05 kHz and 24 kHz for limited bandwidth transmission, and channels for surround sound and multi-language. The extension is different from MPEG1.

The applications of MP3 are very diverse. You can enjoy CD-level music at low cost using ISDN network, use it for digital audio broadcasting using satellite or real-time AOD (on-demand audio) using internet. For example, during the Winter Olympics held in Albertville, France, the German private broadcaster successfully used the Layer 3 codec. In addition, it is possible to purchase music files provided in MP3 format by unit of music through internet or PC communication by applying to new music sales method, not CD or cassette tape sales. Of course, these MP3 files use their own encryption techniques to prevent the risk of piracy. Other applications include Internet radio.

As described above, the conventional digital cellular phone has no function of listening to music in the MP3 form as described above.

Therefore, the present invention is for MP3 playback that is impossible in a conventional digital mobile phone, and an object of the present invention is to store an MP3 music content in a memory in a digital mobile phone, and then have a digital MP3 playback function to play the music according to a user's request. In providing a mobile phone.

In addition, another object of the present invention is to play an MP3 playback function to maximize the product value of the mobile phone by allowing the mobile phone to listen to music stored in the external memory even when not connected to the base station regardless of the call function of the digital mobile phone It is to provide a digital mobile phone having.

1 is a block diagram showing a digital mobile phone having a MP3 playback function according to the present invention

2 is a block diagram showing an MP3 player according to the present invention

3 is a diagram illustrating an internal configuration of the memory of FIG. 1;

4 is a flowchart showing the playback of a digital mobile phone having an MP3 playback function.

Explanation of symbols for main parts of the drawings

1: digital mobile phone 2: information display

3: key input unit 4: earphone connection unit

5: cable 6: MP3 storage

7: MP3 playback unit 8: music output unit

9 control unit 10 MP3 data conversion unit

11 MP3 data input 12 connector

13: address line 14: data line

15 memory 16 speaker

17: Songhwa 18: Music name / pointer

19: music

A feature of the digital mobile phone with MP3 playback function according to the present invention for achieving the above objects is that the MP3 stored music information, MP3 stored in the memory when the music type and song name is selected through the key input unit A control unit for controlling a selection of music information in the form of music, an MP3 data input unit for reading a tune selected from the memory, an MP3 data converter for converting a selected song read through the MP3 data input unit into an audible band, and an audible band It is configured to include an MP3 player having a music output unit for outputting the converted song to the earphone or speaker.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of a digital mobile phone having a MP3 playback function according to the present invention will be described in detail.

1 is a block diagram showing a digital mobile phone having a MP3 playback function according to the present invention, Figure 2 is a block diagram showing an MP3 playback device according to the present invention, Figure 3 is an internal configuration diagram of the memory of FIG.

First, referring to FIG. 1, the digital mobile phone having the MP3 playback function of the present invention includes an information display unit 2, an MP3 playback device 7, a speaker 16, which displays a corresponding function according to a key signal of the key input unit 3. It includes a digital mobile phone (1) having a talker (17) and an earphone connection (4), an MP3 storage unit (6) storing various music information, and the digital mobile phone (1) and a memory (15). It consists of a cable 5 and a connector 12 for connecting the MP3 storage unit 6.

Referring to FIG. 2, the MP3 playback apparatus 7 includes a control unit 9 for controlling selection of music information of MP3 type stored in the memory 15 when the music type and song name are selected through the key input unit 3, MP3 data input unit 11 for reading the tune selected from the memory 15, MP3 data converter 10 for converting the selected song read through the MP3 data input unit 11, the audio band And a music output unit 8 for outputting the converted song to the earphone connection unit 4 or the speaker 16.

3, the memory 15 is composed of an EPROM or an E ² PROM nonvolatile semiconductor memory and stores a music name / pointer 18 and a plurality of music information 19.

The operational effects of the playback process of the digital cellular phone having the MP3 playback function according to the present invention configured as described above will be described.

First, in order to achieve the object of the present invention, the key input unit 3 of the digital cellular phone 1 sets in advance a designated key for performing the MP3 playback function. The defined key corresponds to the MP3 start key and operates the MP3 player of the present invention.

Next, when the MP3 playback device 7 is operated by the designated key, the control unit 9 controls the type and music name of music stored in each area of the memory 15 in the MP3 storage device 6 through the address line 13. Music information for music selection, etc., is designated and displayed on the information display unit 2.

Subsequently, when the user selects and selects music information displayed on the information display unit 2, the controller 9 reads out the corresponding music through the data line 14. At this time, the corresponding music 19 is read from the memory 15 through the MP3 data input unit 11 according to the command of the control unit 9.

Then, the music 19 is converted into an audible frequency band of 20 kHz to 20 kHz for the user to hear in the MP3 data converter 10 according to a control command of the controller 9. At this time, the audible frequency is different in each audible frequency range, the sensitivity of hearing is particularly proved to be the most sensitive in the band of 2 kHz to 5 kHz, this band is mainly used.

Then, the music converted into the audible frequency band as described above is output to the earphone connection unit 4 or the speaker 16 through the music output unit 8 according to the command of the control unit 9. At this time, when one song is finished or before another song is to be selected, pressing a direction selection key and then pressing a selection button may listen to the corresponding song according to the command of the controller 9.

Meanwhile, referring to FIG. 3, the MP3 playback process of the digital mobile phone according to the present invention will be described.

First, when the user presses the MP3 start button (set in advance in the key input unit) through the key input unit 3 (S41), the MP3 data input unit 11 searches for the music name / pointer 18 and various kinds of data from the memory 15. Read music information (S42).

Next, the music information read by the MP3 data input unit 11 is displayed on the information display unit 2 (S43) and waits for the user's selection (S44). At this time, if the selection is not made for a predetermined time is returned to the call standby mode (S45) (S46).

If the music is selected within the set time, the music selected by the user is read from the memory 15 and the music is transmitted to the MP3 data converter 10 through the controller 9 (S48).

Thereafter, the music selected by the MP3 data converter 10 is converted into an audible band and then transmitted to the music output unit 8 to output music to the earphone connecting unit 4 or the speaker 16.

As described in detail above, according to the digital mobile phone having the MP3 playback function of the present invention, the following effects are obtained.

First, the present invention can restore and listen to music data compressed and stored in an external storage device using a digital cellular phone.

Secondly, the present invention can be implemented as a digital mobile phone having a complex function of listening to music as well as a call which is a basic function of the digital mobile phone.

Third, the present invention can maximize the use of the digital mobile phone by allowing not only music but also other useful information stored in the external storage device.

Claims (2)

A memory in which music information in MP3 form is stored; And If a music type and song name are selected through a key input unit, a controller for controlling selection of music information of the MP3 type stored in the memory, an MP3 data input unit for reading the selected song from the memory, and a selection read through the MP3 data input unit. MP3 data conversion unit for converting the song to the audio band, MP3 playback device having a music output unit for outputting the song converted to the audio band to the earphone or speaker, the digital having MP3 playback function cellphone. The digital cellular phone having an MP3 playback function according to claim 1, wherein the memory comprises a nonvolatile semiconductor memory and stores music names / pointers and a plurality of pieces of music information.