3. Our Objective
• Design fully functional MP3
player utilizing
microcontroller, DSP
processor, LCD, and
hardware MP3 decoder
4. History of the IPOD
• Timeline - History of MP3
• 1987 - EUREKA project
• January 1988 - Moving Picture Experts Group or MPEG was established
• April 1989 - Fraunhoffer received a German patent for MP3.
• 1992 - MPEG-1.
• 1993 - MPEG-1 standard published.
• 1994 - MPEG-2 developed and published a year later.
• November 26, 1996 - United States patent issued for MP3.
• September 1998 - enforce their patent rights.
• February 1999 - A record company called SubPop is the first to distribute music
tracks in the MP3 format.
• 1999 - Portable MP3 players appear.
5. What is an IPOD??
• The iPod is a line of portable media players
and multi-purpose pocket computers designed
and marketed by Apple Inc.
• Creator was Tony Fadell. He approached
different companies until Apple accepted his
idea and hired him.
6. IPOD FEATURES
Some of iPod's more
notable features include:
• Audio
• Video
• Photos
• External hard drive
• Calender/contacts syncing
• Games
• Car integration
From Apple, accessories
include:
• Microphone
• External digital voice recorders
• Universal dock for charging, syncing
or connecting to external A/V
equipment
• Remote control compatible with
universal dock
• Camera connector
• Armbands, cases and skins
• Car audio adapters, in-car iPod
holders
• Portable, desktop and wireless
speakers
• iPod Hi-Fi speaker system
• Car chargers and power adapters
• Radio transmitters
9. AtMega-162
• The high-performance, low-power Atmel 8-bit AVR RISC-
based microcontroller combines 16KB of programmable
flash memory, 1KB SRAM, 512B EEPROM, and a JTAG
interface for on-chip debugging. The device supports
throughput of 16 MIPS at 16MHz and operates between
2.7-5.5 volts.
• By executing instructions in a single clock cycle, the device
achieves throughputs approaching 1 MIPS per MHz,
balancing power consumption and processing speed.
The data sheet of AtMega-162 Microcontroller is being
attached below:
18. DSP PROCESSOR
A digital signal processor (DSP) is a
specialized microprocessor with its architecture
optimized for the operational needs of digital
signal processing
The goal of DSPs is usually to measure, filter
and/or compress continuous real-world analog
signals.
A DSP Processor can process data in real time,
making it ideal for applications that cannot
tolerate delays.
A DSP Processor takes a digital signal and
processes it to improve the signal into clearer
sound, sharper image or faster data.
We have used an EnTuino DSP Processor for the
simple purpose of performing simultaneous and
continuous conversion of mp3 formatted audio
files to give us a much clearer output.
20. LCD
A liquid-crystal display (LCD) is a flat panel display or video display that
uses the light modulating properties of liquid crystals. Liquid crystals do
not emit light directly.
LCDs are available to display arbitrary images (as in a general-purpose
computer display) or fixed images which can be displayed or hidden,
such as preset words, digits, and 7-segment displays as in a digital clock.
In our project, we have used a GLCD5110 LCD display. It has the
following features:
- 84 X 48 pixels resolution
- Built-in PCD8544 controller with SPI interface bus.
- Built-in the backlight blue LED controlled by software
- Supply voltage range is +3 to +3.3V. Maximum current is 10mA
(with backlight LED)
- Display the standard size 5x7 pixel character up to 14 characters
6 lines and mono-tone graphic image.
- Size is 4.5 x 4.5 cm.
- Easy to connection
- Interface with any popular microcontroller.
21. Additional Requirements
Storage memory to store the songs.
Usb cable to move data from
system and power it up.
Battery to give power.
Ear phone or headphones.
Start Up
22. Building Blocks of Mp3 code
media player
class
Code
Writing class for reading
mp3,Play,Stop,Pause
MP3Player
23. List of references we have used:
• http://electronics.howstuffworks.com/ipod.htm
• http://inventors.about.com/od/mstartinventions/a/MPThree.htm
• http://www.addysg.org.uk/ipodined/news.php
• http://www.learninginhand.com/ipod/quizzes.html
• http://www.apple.com/itunes/whatson/podcasts/tips.html
• http://www.quizzlerpro.com/downloads/QuizzlerManual.pdf
• http://www.talkingpanda.com/iwriter/
• http://www.ehow.com/how_2049669_add-music-ipod-itunes.html
• http://www.apple.com/hotnews/thoughtsonmusic/
• http://www.podkids.com.au/
• http://www.apple.com/au/education/
• http://www.education-world.com/a_tech/sites/sites070.shtml
