Multimedia Network
Communications
Subject
Session
Tahun
Versi
:
:
:
:
T0934 / Multimedia Programming Foundation
13
2009
1/0
Learning Outcomes
In the end of this session, students must be
able to:
– Understand the overview of
multimedia network communication
and mobile multimedia
– Understand the basic principal of Java
2 Micro Edition
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Outline
• Multimedia Network Communication
• Mobile Multimedia
• Java 2 Micro Edition (J2ME)
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Multimedia Network Communication
• Similar to computer network
communication where both deal with data
communication
• The different is multimedia data is known
as continuous media, which is :
– Voluminous
– Real-Time and interactive
– Sometimes bursty
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Quality of Service (QoS)
•  a collective effect of service
performances that determined the degree
of satisfaction of that service’s user
• QoS for multimedia data transmission
depends on many parameters such as :
–
–
–
–
–
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Data Rate
Latency (maximum frame/packet delay)
Packet loss or error
Jitter (delay jitter)
Sync Skew
Mobile Multimedia
•  multimedia information exchange over
wireless networks or wireless Internet.
• Increase in usage and development
because :
– popularity and evolution of mobile computing devices
– fast, affordable mobile network
• Common programming language for
mobile multimedia application  Java 2
Micro Edition (J2ME)
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Java 2 Micro Edition (J2ME)
• originally created in order to deal with the
constraints associated with building applications
for small devices
• a collection of technologies and specifications
that can be combined to construct a complete
Java runtime environment specifically to fit the
requirements of a particular device or market
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J2ME elements
configuration
Java ME
elements
profile
optional
package
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provides the most basic set of
libraries and virtual machine
capabilities for a broad range
of devices
a set of APIs that support a
narrower range of devices
a set of technologyspecific APIs
J2ME Configurations
• Divided into two base configurations :
– Connected Limited Device Configuration (CLDC) , for
small mobile devices
– Connected Device Profile (CDC) for more capable
mobile devices like smart-phones and set top boxes.
CLDC
• 128K to 512K total
memory available
• Limited power, often
battery operation.
• Connectivity to some
type of network, often
with a wireless,
intermittent connection
and limited bandwidth
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CDC
• At least 512K ROM and
256K RAM
• a device that can support
a complete JVM
implementation.
J2ME Profiles
• Personal Profile
– suitable for products that require full AWT compatibility and
applet support (high end PDAS and embedded web browsers)
• Foundation Profile
– support resource-constrained devices without a standards-based
GUI system (network printers, routers, residential gateways,
enterprise-class server applications)
• Mobile Information Device Profile
(MIDP)
– A profile, when combined with CLDC, provides a standard Java
runtime environment for today's most popular mobile information
device for mobile information devices (cellular phones and twoway pagers, and PDAs)
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Java Platform
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Sample Code
Show Picture
Result
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Sample Code
Play Sound In J2ME
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Sample Code
Play Video In J2ME
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Sample Code
Result
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References
• What's J2ME?. 2009.
http://onjava.com/pub/a/onjava/2001/03/08/J2ME.html
• Java ME Technology. 2009.
http://java.sun.com/javame/technology/index.jsp
• A Brief Look at Java 2 Micro Edition. 2009.
http://www.wirelessdevnet.com/channels/java/features/j2
me.html
• Using Mobile Media API (MMAPI). 2008.
http://today.java.net/pub/a/today/2005/09/27/j2me4.html?
page=2
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