KR200254150Y1 - MP3 player using a CD-ROM for a computer - Google Patents

Abstract

An IDE interface 31 for interfacing MP3 data stored and played back from a CD-ROM drive for a computer, a microcontroller 33 for controlling storage and playback of MP3 data, and a keypad for inputting a command by a user ( 34), a display unit 32 for displaying the operation state of the MP3 player, an MP3 decoder 35 for decoding the MP3 signal input from the microcontroller 33, and the MP3 decoder 35 described above. And a D / A converter 36 for converting a digital signal inputted by decoding from an analog signal into an analog signal and outputting the audio signal.

The present invention provides an MP3 player device using a CD-ROM for a computer that can produce an inexpensive MP3 player device by storing and reproducing a music compressed file using a computer CD-ROM.

Description

MP3 player using a CD-ROM for computer {MP3 player using a CD-ROM for a computer}

The present invention relates to an MP3 player device using a CD-ROM for a computer. More specifically, it is possible to manufacture a low-cost MP3 player device by allowing a computer CD-ROM to store and play back a compressed file. The present invention relates to an MP3 player device using a computer CD-ROM.

Audio player devices have started from LP players, which have traditionally been called full-scale, and have evolved into cassette tape players, compact disc (CD) players, mini disc (MD) players, and the like.

Recently, with the development of an effective music compression format called MP3, existing music listening means such as cassette tape player, CD player, etc. have been replaced by computers, and MP3 player devices have been developed and can be used only through expensive general-purpose equipment such as computers. Listening to music compressed files is now possible using a mobile device.

The format of the MP3 music compressed file is one of computer data. Unlike other data such as programs, it has no logic and is accessed sequentially. In addition, the MP3 format compresses the uncompressed music data represented by wav. The compression is performed with high efficiency of about 1/13 during the compression process. Radio waves are spread through computer communication such as, and usage is increasing.

In an MP3 player device, the MP3 music compressed file is generally stored in a flash memory. 1 is a configuration diagram of an MP3 player device using a conventional flash memory. As shown in FIG. 1, the conventional MP3 player apparatus using a flash memory includes a flash ROM 11 for storing a music compressed file, a keypad 12 for a user to input a command, and A microcontroller 13 for reading out the music compressed file stored in the one flash ROM 11 and transmitting it to the MP3 recorder 15, a display unit 14 for displaying the operating state of the MP3 player, The MP3 decoder 15 for decoding the MP3 signal received from the microcontroller 13 and the D / A converter for converting the digital signal decoded and input from the MP3 decoder 15 into an analog signal and outputting the audio signal. It consists of 16.

However, the conventional MP3 player device using the flash memory has a problem in that the number of portable music files is limited to a small number because a memory card composed of an expensive flash memory is used as a medium for storing the music compressed file.

In order to solve such a problem, an MP3 player device using a music CD has been disclosed instead of an expensive flash memory. 2 is a configuration diagram of an MP3 player apparatus using a conventional music CD. As shown in Fig. 2, the conventional MP3 player apparatus using the music CD includes a CD mechanism control RF interface 21 for reproducing a music compressed file stored in the music CD, and the CD. CD digital signal processor 23 for processing the digital signal input from the mechanism control RF interface 21, CD MP3 decoder 25 for decoding the MP3 signal input from the CD digital signal processor 23 described above. The D / A converter 27 converts the digital signal decoded from the CD MP3 decoder 25 into an analog signal and outputs the audio signal, a microcontroller 22 for controlling the overall operation, and an MP3. And a display unit 24 for displaying the operation state of the player, and a keypad 26 for the user to input a command.

However, the MP3 player device using the music CD has a problem of being expensive because it requires a CD mechanism control RF interface together with a CD mechanism for playing music compressed files stored in the music CD.

The object of the present invention is to solve such a conventional problem, and it is possible to produce a low-cost MP3 player device by storing a music compressed file using a computer CD-ROM and then playing it. The present invention provides an MP3 player device using a ROM.

1 is a configuration diagram of an MP3 player device using a conventional flash memory.

2 is a configuration diagram of an MP3 player device using a conventional music CD.

3 is a block diagram of an MP3 player device using a computer CD-ROM according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

31: IDE interface 32: Display

33: microcontroller 34: keypad

35: MP3 decoder 36: D / A converter

DETAILED DESCRIPTION Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. . Other objects, features, and operational advantages, including the purpose, operation, and effect of this design, will become more apparent from the description of the preferred embodiment.

For reference, the embodiments disclosed herein are only presented by selecting the most preferred examples to help those skilled in the art from the various possible examples, and the technical spirit of the present invention is not necessarily limited or limited only by this embodiment. However, various changes, additions and changes are possible within the scope without departing from the technical spirit of the present invention, as well as other equivalent embodiments.

As shown in FIG. 3, the configuration of the MP3 player device using the CD-ROM for a computer according to the embodiment of the present invention is an IDE interface 31 for interfacing MP3 data stored and reproduced from a CD-ROM drive for a computer. ), A microcontroller 33 for controlling the storage and playback of MP3 data, a keypad 34 for the user to input a command, a display unit 32 for displaying the operating state of the MP3 player, MP3 decoder 35 for decoding the MP3 signal input from the microcontroller 33 and D / A for converting the digital signal decoded and input from the MP3 decoder 35 into an analog signal and outputting the audio signal. Converter 36.

The operation of the MP3 player device using the computer CD-ROM according to the embodiment of the present invention by the above configuration is as follows.

MP3 data stored and reproduced from a CD-ROM drive for a computer are interfaced through the IDE interface 31.

The MP3 data interfaced through the IDE interface 31 is stored and reproduced by the microcontroller 33.

The microcontroller 33 controls the MP3 data according to a user command input through the keypad 34, and the operation state of the MP3 player is displayed to the outside through the display unit 32.

The MP3 decoder 35 decodes and outputs the MP3 signal input from the microcontroller 33, and the D / A converter 36 decodes the digital signal decoded and input from the MP3 decoder 35. The MP3 music is played back by converting the audio to audio.

Generally, a CD-ROM uses a medium called a CD, which is essentially the same as a music CD, but is designed for error-free, high-speed access to various types of computer data including programs having logic for development. It requires a relatively large amount of power compared to a music CD player. Therefore, it is preferable that the MP3 player device according to the embodiment of the present invention be manufactured for home use or vehicle rather than portable.

As described above, in an embodiment of the present invention, a computer CD-ROM having an effect of producing an inexpensive MP3 player device by storing music compressed files using a computer CD-ROM and then playing them can be used. MP3 player device can be provided. This effect of this design can be used in various applications within the scope of the technical idea of the design.

Claims (1)

An IDE interface 31 for interfacing MP3 data stored and played back from a CD-ROM drive for a computer, a microcontroller 33 for controlling storage and playback of MP3 data, and a keypad for inputting a command by a user ( 34), a display unit 32 for displaying the operation state of the MP3 player, an MP3 decoder 35 for decoding the MP3 signal input from the microcontroller 33, and the MP3 decoder 35 described above. And a D / A converter (36) for converting a digital signal inputted by decoding from an analog signal into an analog signal and outputting the audio signal.