A COMPLETE SOLUTION OF AUDIO VIDEO DECODER

Abstract

Considering the demand for a smart connection to a complete solution of audio video decoding. An integration design of a MP3/MP4 Player with a USB is proposed. The USB module serves as the wireless channels between the MP3 & MP4 player and the headphone, the microphone and recording memory cards, the FM receiver and the AUX. Audio switches in our design are used to facilitate the corresponding audio paths. A highly integrated chip set have been chosen to fulfill the required functions, resulting in less power consumption, and in an extension of the recharge cycle. In this integration design, a simple operational amplifier with a negative feedback circuit is used to suppress the common mode noise resulting from high frequency signal coupling between the audio paths. RCA cables are used to connect video output to the TV or PC. Overall, our prototype design has already demonstrated good sound quality for an audio video decoding using USB module. Use of LA4440, storage files through USB interfaces player on the device from PC download, and display screen using LCD1602. Simple design, low power, easy expand, low cost and high recognition. Because of the use of arduino, it can be easily portable to other micro control system, providing MP3/ MP4 player’s function, which has a strong market competition and practical value.

Existing System

Proposed System

Architecture

BLOCK DIAGRAM