INTRODUCTION TO MULTIMEDIA Chapter 2 Multimedia Systems
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
INTRODUCTION TO MULTIMEDIA
Chapter 2
Multimedia Systems
Definition of Multimedia System
A Multimedia System is a
system capable of
processing multimedia data
and applications.
Characteristics of a Multimedia Systems
A Multimedia systems has four basiccharacteristics:
1. Multimedia systems must be computercontrolled.
2. Multimedia systems are integrated.
3. The information they handle must berepresented digitally.
4. The interface to the final presentation ofmedia is usually interactive
Characteristics of a Multimedia Systems
1. Computer Controlled
Producing the content of the information – e.g. byusing the authoring tools, image editor, sound andvideo editor
Storing the information – providing large and sharedcapacity for multimedia information.
Transmitting the information – through the network.
Presenting the information to the end user – makedirect use of computer peripheral such as displaydevice (monitor) or sound generator (speaker).
Characteristics of a Multimedia Systems
2. Integrated
All multimedia components (audio, video, text,graphics) used in the system must be somehowintegrated.
Every device, such as microphone and camera isconnected to and controlled by a single computer.
A single type of digital storage is used for all mediatype.
Video sequences are shown on computer screeninstead of TV monitor.
Characteristics of a Multimedia Systems
3. Interactivity
Level 1: Interactivity strictly on information delivery.Users select the time at which the presentationstarts, the order, the speed and the form of thepresentation itself.
Level 2: Users can modify or enrich the content ofthe information, and this modification is recorded.
Level 3: Actual processing of users input and thecomputer generate genuine result based on theusers input.
Characteristics of a Multimedia Systems
4. Digitally Represented
Digitization: process involved in transforming an
analog signal to digital signal.
Quiz!!!
1. Define MULTIMEDIA SYSTEM.
2. What are the four characteristics of MULTIMEDIA
SYSTEM?
Challenges for Multimedia Systems
The key issues multimedia systems need
to deal with here are:
How to represent and store temporal
information.
How to strictly maintain the temporal
relationships on play back/retrieval.
What process are involved in the above.
Desirable Features for a Multimedia System
Very High Processing Power
Multimedia Capable File System
Data Representations/File Formats thatsupport multimedia
Efficient and High I/O
Special Operating System
Storage and Memory
Network Support
Software Tools
Components of a Multimedia System
Component of
Multimedia System
Capture Devices
Storage Devices
Communication Network
Computer System
Display Devices
Components of a Multimedia System
Central Processing Unit
A central processing unit (CPU), or sometimes simply
processor, is the component in a digital computer capable
of executing a program.
Components of a Multimedia System
Monitor
A monitor, is a piece of electrical equipment which
displays viewable images generated by a computer
without producing a permanent record.
Components of a Multimedia System
Projector
Projection devices such as data projectors can be used
to display images on surfaces such as a wall, producing
clear, bright and high resolution images.
Components of a Multimedia System
Video Grabbing Card
A video card, (also referred to as a graphics accelerator
card, display adapter, graphics card, and numerous
other terms), is an item of personal computer hardware
whose function is to generate and output images to a
display.
Components of a Multimedia System
Sound Card
A sound card (also known as an audio card) is a computer
expansion card that facilitates the input and output sound
under control of computer programs.
Components of a Multimedia System
Speakers
A loudspeaker, speaker, or speaker system is an
electromechanical transducer which converts an electrical
signal into sound.
Components of a Multimedia System
CD-ROM Drive
CD-ROM discs are read using CD-ROM drives, which
are now almost universal on personal computers.
Components of a Multimedia System
Scanner
A scanner is a device that analyzes images, printed text, or
handwriting, or an object (such as an ornament) and
converts it to a digital image.
Components of a Multimedia System
Touchscreen
Touchscreens, touch screens, touch panels or
touchscreen panels are display overlays which have
the ability to display and receive information on the
same screen.
Components of a Multimedia System
Head-up Display
Devices that are worn on the head to display
information are known as head-up displays. This
technology has been implemented in virtual reality.
Quiz!!!
1. What are the components of Multimedia
System and give examples for each.
Related Documents
![IED Firenze | Web Communication: User Experience, SEO, Multimedia [2017]](https://static.cupdf.com/doc/110x72/58ecbdd51a28ab3c428b45df/ied-firenze-web-communication-user-experience-seo-multimedia-2017.jpg)
