Basics of Mobile Devices

1. MOBILEDEVICES

2. Index
 Introduction
 The History of Mobile Devices
 Types of Mobile Devices
 Limitations of Mobile devices
 The Future of Mobile Devices

3. Introduction
Mobile Device ?
 A pocket sized computing device, typically having a
display screen with touch input or a miniature keyboard

4. History
 It can be said that the mobile radio devices was born at
the same time the radio communication had been
invented .
 The development of mobile devices starts from the
1920’s, there are five stages .

5. • 1920's-1940's
• Based on several wave bands of shortwave, the private mobile communication
system had been invented.
• The Detroit police car radio system is the representative one.
• The frequency of this system is 2MHz at that time.
STAGE
1
• 1940's-1960's
• The public mobile service came out .
• 1946 According to the plan of Federal Communications Commission(FCC)
the Bell system established the first public car phone net in St.Louis.
• There was three channels in that time, the mode was simplex.
STAGE
2
• 1960's-1970's
• America improved the mobile telephony system(1MTS).
• This period complete : automatic channel choose and automatic dialling to
the net.
STAGE
3

6. • 1970's-1980's
• The Bell Labs successfully developed the advanced mobile phone
system(AMPS) .
• The cellular network built up, improved the capacity of the system.
• The cellular network became the utility system, used in the worldwide.
Stage
4
• The Digital Mobile Communication System(DMCS) gets developed and
mature in this period.
Stage
5

7. Types of Mobile Devices
 Pocket Computers
 PDA’s, Tablet PC’s
 Handheld Game Consoles
 Mobile Phone
 Media Recorders
 Digital Camera, Digital Camcorder
 Media Players/Displayers
 iPod’s, Mp3 players
 Automotive System

8. Pocket Computers
PDA’s
 PDAs are handheld devices that combine elements of computing,
telephone/fax, Internet and networking in a single device.
 A typical PDA can function as a cellular phone, fax sender, Web
browser and personal organizer.
 Unlike portable computers, most PDAs began as pen-based, using a
stylus rather than a keyboard for input. This means that they also
incorporated handwriting recognition features.
 Some PDAs can also react to voice input by using voice recognition
technologies.
 PDAs of today are available in either a stylus or keyboard version
(called a data pad).
 Examples of PDA Devices: Palm Pilot, Revo, Sony Clie, Hewlett-
Packard Jornado, Casio Cassiopeia, Compaq iPaq, Toshiba Pocket
PC

9. Pocket Computers
Tablet PC’s
 Tablet PCs are a type of notebook computer that has an
LCD screen on which you can write using a stylus.
 The handwriting is digitized and can be converted to
standard text through handwriting recognition, or it can
remain as handwritten text.
 The stylus also can be used to type on a pen-based key
layout where the lettered keys are arranged differently than
a QWERTY keyboard.
 Tablet PCs also typically have a keyboard and/or a mouse
for input.
 Examples of Table PCs: Samsung Q1, Toshiba Portege,
Fujitsu Lifebook, Motion Computing, IBM Thinkpad

10. Handheld Game Consoles
 A handheld video game console is a lightweight, portable electronic
device with a built-in screen, game controls, speakers and replaceable
and/or rechargeable batteries or battery pack.
 Handheld game consoles are smaller than home video game
consoles and contain the console, screen, speakers, and controls in one
unit, allowing people to carry them and play them at any time or place
 In 1976, Mattel introduced the first handheld electronic game with the
release of Auto Race.
 Nintendo is credited with popularizing the handheld console concept
with the release of the Game Boy

11. Smartphones
 Smartphones combine both mobile phone and handheld
computers into a single device.
 Smartphones allow users to store information (e.g., e-mail),
install programs, along with using a mobile phone in one
device.
 For example, a Smartphone could be a mobile
phone with some PDA functions integrated into
the device or vice versa.
 Examples of Smartphones: Sony Ericsson,
Palm Treo, Blackberry, Nokia T-Mobile Sidekick
Torq, Motorola Q, E-Ten, HP iPaq, I-mate,
Mobile Phones

12. Mobile Phones
Multimedia phones
 Multimedia phones offers multimedia functionalities.
 Besides the function of smart phone, a multimedia
phone can also play mp3 ,wma format audio and mp4
format video files.
 Many multimedia phones include cameras for still
pictures and video recording.
 Some phones also offers picture editing softwares.
 Another application of multimedia phones is mobile
phone gaming.

13. Media Recorders
Digital Still Camera (DSC)
 A digital camera (or digicam) is a camera that
takes video or still photographs by recording images on
an electronic image sensor.
 Digital and film cameras share an optical system, typically
using a lens with a variable diaphragm to focus light onto an
image pickup device.
 However, unlike film cameras, digital cameras can display
images on a screen immediately after being recorded, and
store and delete images from memory.
 Some digital cameras can crop and stitch pictures and
perform other elementary image editing.

14. Media Recorders
Digital Video Camera (DVC)
 A video camera is a camera used for electronic motion
picture acquisition, initially developed by
the television industry but now common in other
applications as well.
 Video cameras are used primarily in two modes.
 The first, characteristic of much early broadcasting,
is live television, where the camera feeds real time
images directly to a screen for immediate observation.
 In the second mode the images are recorded to a storage
device for archiving or further processing.

15. Media Players/Displayers
 A portable media player (PMP) or digital audio player (DAP) is
a consumer electronics device that is capable of storing and
playing digital media such as audio, images, video, documents, etc.
 the data is typically stored on a hard drive, micro drive, or flash
memory.
 Digital audio players are also sold as MP3 players.
 Categorized by storage media:-
Flash-based players
Hard drive-based players or digital jukeboxes
MP3 CD/DVD players
Networked audio players
USB host/memory card audio players
 It has features like Audio playback, Image viewing, Video playback,
Recording, Radio

16. Automotive System
GPS Navigation System
 A GPS navigation device is any device that receives Global
Positioning System (GPS) signals for the purpose of
determining the device's current location on Earth.
 GPS devices provide latitude and longitude information, and
some may also calculate altitude.
 Contains all types of maps, like streets maps, which may be
displayed in human readable format via text or in a graphical
format
 Provide directions directly to an autonomous vehicle such as a
robotic probe
 Provide information on nearby amenities such as restaurants,
fueling stations, etc.

17. Limitations
 Accessibility
 Range
 Connectivity
 Security
 Mobility

18. Future
 The mobile devices plays an indispensable role in
nowadays life, meanwhile this field is still rapidly
developing.
 Nowadays the manufactures of mobile devices are
devoting on touching screen and 3D effect. More and
more APP will be added into the mobile devices, make
people's life much more convenient and fun.