Transcript Slide 1

Md. Monjur –ul-Hasan
Assistant Professor
Department of Computer Science & Engineering
Chittagong University of Engineering & Technology, Cittagong-4349
Bangladesh.
Homepage: http://monjur-ul-hasan.info
MultiMedia
Multi : Many, Much, Multiple
Media: A means of Communication
Basics of Multimedia
Medium
Multimedia System
Traditional Data Streams
Continues Media Data Stream
Medium : Perception Medium
How do humans perceive information in a computer environment?
People perceive info from the environment and computer system.
Medium
Representation
Text: EBCD, ASCII, UNICODE
Graphics: CEPT, CAPTAIN
Audio: PCM
Image: JPEG,
Movie: MPEG
Medium : Presentation Medium
Through Which medium is information delivered by the computer?
Camera
Speaker
Monitor
Medium : Storage Medium
Where will the information be stored?
Pen
Hard
drive,
Drive
Memory
Card
CD DVD
Blue
Ray Disk
Medium
Transmission
Network
Cable
Wireless
Fiber optic
Representation Space
Vs
Representatin Space
Representation space: The place where we get the multimedia
Representation Value: Discrete or continues value representation
space.
Multimedia System Definition
Combination
Independence
Computer
Combination
of discrete
and
continuous media,
It require several
levels of
independence
It require
several
levels
of independence
AAof
text
and image
not
a is
multimedia.
recorded
movieis (DAT)
not a multimedia as the sound
and video
is
media
Control
and
A recorded movie (DAT) is not a multimedia as the sound and video is
coupled together in a common storage medium.
Integration
coupled together in a common storage medium.
Traditional Data Transmission Streams Characteristic
1
Asynchronous
Transmission
•No time restriction
•Discrete media can
be transmitted
•With additional
technique continuous
media can also be
transmitted with this
mode.
2
Synchronous
Transmission
• Maximum End to
End Delay.
•Arbitrary earlier
time is possible
3
Isochronous
Transmission
•Minimum End to End
Delay
Data Stream Characteristic
Time Interval
Strongly Periodic
Weekly periodic
Aperiodicity
20 July 2015
12
Strongly Regular
Video Stream Taken From Camera
Weekly Regular
MPEGG
Irregular
Mouse Movement
Logical Data Unit (LDU)
•Individual information unit of an time
dependent sequence of continuous media
is known as LDU.
•Particular application determines what is
considered to be the LDU.
Motion Picture
Granularity
Thank you All