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Disc / SD card / MMC card / MP3 player

A technology of MP3 player and USB interface, which is applied in the field of audio player, can solve the problems of ear damage, single playback file format, etc., and achieve the effect of avoiding damage

Inactive Publication Date: 2007-05-09
赵卫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional MP3 players can only play MP3 file format, use earphones to answer, there are problems such as single playback file format, long-term use is harmful to ears, etc.

Method used

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  • Disc / SD card / MMC card / MP3 player
  • Disc / SD card / MMC card / MP3 player
  • Disc / SD card / MMC card / MP3 player

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing:

[0022] As shown in the figure, this player can play U disk, SD / MMC card MP3 files. Its shape is hemispherical, and it is composed of a shell 2 and a foldable folding body 3. The hinge shaft is between the shell 2 and the folding body 3. 4 connection, the inside of the shell 2 is a circuit board, and its surface has a subwoofer 1, an SD / MMC card interface 21, a USB interface 22, a headphone cable jack 23, a power jack 24, a play key 25 and a power switch, and on the foldable body 3 Middle (treble) speaker 32, volume key 31 are arranged on the surface.

[0023] working principle

[0024] When the power switch of the machine is turned on, the 6V power supply starts to supply power to the inside. The working process is as follows: 6V → boost IC (MP1540), 9V outputs to four channels, two of which supply power to the CPU (main control) U1, after the main control is powered on F...

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PUM

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Abstract

A player of U disc / SD card / MMC card / MP3 consists of shell and circuit. It is featured as setting USB interface and storage card interface on player; connecting card seats of USB interface and storage card separately to circuit; forming said circuit by master control chip, program storage, USB interface, storage card interface, power amplification circuit and power supply circuit; connecting said master control chip separately to program storage, USB interface, storage card interface, power amplification circuit and power supply circuit.

Description

technical field [0001] The invention relates to an audio player, mainly referring to a U disk / SD card / MMC card / MP3 player. Background technique [0002] Traditional MP3 players can only play MP3 file format, use earphones to answer, there is a single playback file format, long-term use is harmful to the ears and other problems. Contents of the invention [0003] The purpose of the present invention is to provide a kind of U disk / SD card / MMC card / MP3 player, by directly playing U disk, SD / MMC card MP3 file, solved the deficiency that existing MP3 player exists preferably. [0004] The technical solution for realizing the present invention is: the player includes a shell and a circuit, and its main structure is that the player is provided with a USB interface and a memory card interface, wherein the USB interface and the memory card holder are respectively connected to the circuit. [0005] The technical program also includes: [0006] The circuit includes a main control c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C7/16
Inventor 赵卫
Owner 赵卫
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