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					MULTIMEDIA
Multimedia is any combination of text,
photographs, graphic art, sound, animation, and
video elements delivered to you by computer or
other electronic or digitally manipulated means.
Multimedia may be broadly divided into linear and
non-linear categories.
Linear active content progresses without any
navigational control for the viewer such as a cinema
presentation.
Non-linear content offers user interactivity to control
progress as used with a computer game or used in
self-paced computer based training.
         Elements of Multimedia
• a processor, typically a PC or Workstation
• a variety of methods by which the user can
  interact with the system, such as, keyboard,
  mouse, joystick or touch screen
• a screen with high resolution that can display
  high quality images, moving videos, graphics and
  animations
• Speakers
• a microphone
• Storage devices
         Applications of Multimedia
• Education and Training:- CBT (Computer based training) courses
• Information and Sales:- point-of-sale systems and point-of-
  information systems also known as Kiosks.
  POI- used to inform the public about the facilities offered by the
  organizations such as art galleries, museums, parks, hotels and
  airports
  POS- used to support sales staff, encourage brand awareness, boost
  sales and gives information about the product in malls and also
  have card swipe facility
• Communications:- Video-conferencing, to provide better
  communications between persons separated by space and time
  who need to work together on common projects
• Medicine:- MRI (magnetic resonance imaging), CT scans
         Problems with Multimedia
•   Investment costs
•   Technical barriers
•   Social and psychological barriers
•   Legal problems
    Multimedia development functions
Source




 Input        Development       Output



                Storage



                                Delivery
           Input subsystem functions


                     Monitor



Source   Capture      Index            Data Storage



         Digitize                      STORAGE


         Compress                  Multimedia Store
           Output processing subsystems



                     Terminal



   Data Store

                     Process     Recorder   Output


Multimedia Store
The Multimedia PC
    "Multimedia PC (MPC)" is a trademark of the Multimedia PC
     Marketing Council, and describes a PC that meets a certain
     minimum specification for multimedia delivery.
MPC Level 1
• The first MPC minimum standard, set in 1991, was:
• 16 MHz 386SX CPU
• 2 MB RAM, 30 MB hard disk
• 16-color, 640×480 video display
• 1x (single speed) CD-ROM drive using no more than 40% of CPU to
  read, with < 1 second seek time
• 8-bit sound, Musical Instrument Digital Interface (MIDI) playback
  specification for encoding, storing, synchronizing, and transmitting
  the musical performance and control data of electronic musical
  instruments.
• Windows 3.0 with Multimedia Extensions.
    MPC Level 2
• In 1993, an MPC Level 2 minimum standard was announced:
• 25 MHz 486SX CPU
• 4 MB RAM
• 160 MB hard disk
• 16-bit color, 640×480 VGA video card
• 2x (double speed) CD-ROM drive using no more than 40% of CPU to
  read at 1x, with < 400 ms seek time
• 16-bit sound, MIDI playback.
• Windows 3.0 with Multimedia Extensions, or Windows 3.1.
    MPC Level 3
•   In 1996, MPC Level 3 was announced:
•   75 MHz Pentium CPU
•   8 MB RAM
•   540 MB hard disk
•   Video system that can show 352×240 at 30 frames per second, 16-
    bit color
•   MPEG-1 hardware or software video playback
•   4x CD-ROM drive using no more than 40% of CPU to read, with <
    250 ms seek time
•   Sound card outputting 44 kHz, 16-bit "CD quality" sound
•   Windows 3.1 or Windows 95
                Multimedia Platforms
 Multimedia Hardware
• IBM:- introduced a first model to have multimedia features named
   as Ultimedia.
 - a range of audio and video adapters for capture and playback
 - a desktop conferencing package
 - a suite of kiosks and a touchscreen
 - transactional features (card reader)
 - a speech server series that analyses the spoken words
• Apple:- introduced Macintosh (Mac)
 - built-in speakers
 - supports grey scale or colour images and animations
 - supports voice recognition, sound generation
 - CD-ROM Drive that supports Photo CD, is a system designed by
   Kodak for digitizing and storing photos in CD
• UNIX workstations:- particularly suitable for applications that
   combined advanced 2D and 3D graphics.
   Sun:- was the first of the UNIX workstations, named as
   SPARCstation
 - system runs Solaris, operating system based on UNIX.
 - supports 16-bit audio I/O and a connection to the Integrated
   Services Digital Network (ISDN), a system that carries voice, image
   and data over two telephone lines.
 - CD-ROM drive that supports CD-ROM XA that combines
   compressed audio, visual and computer data and allowing all to be
   accessed simultaneously.
 - Video camera can be used.
   Silicon Graphics:- introduced Indy workstation in 1993
 - supports IRIX, operating system comes from Unix family
 - supports ISDN
 - having color digital camera and includes 3D stereo glasses.
  System Software
• Microsoft Windows:- support for multimedia within Windows is
   provided by a range of elements:
 - Object Linking and Embedding (OLE), let the users insert
   multimedia elements into software programs.
 - Media Command Interface, allows Windows-compatible
   applications to control multimedia devices such as CD-ROM drives,
   audio and animation players.
 - Audio Video Interleaved (AVI), a file format for digital video.
 - Video, software based on AVI file format to capture and digitizing
   video sequences.
• Multimedia Presentation Manager/2:- introduced by IBM to
   support Ultimedia
 - supports a variety of formats for image and audio files.
 - data streaming and synchronization for the transfer of larger
   amount of data from one device to another.
• Quick Time:- launched by Apple as a main competitor to Video for
   Windows
  - an open software architecture that integrates dynamic data such as
   sound, video and animation.
  - supports Windows XP, Windows vista, Windows 7, Mac OS X lion
  - QuickTime consists of two major subsystems: the Movie Toolbox
   and the Image Compression Manager. The Movie Toolbox consists
   of a general API, application program interface, is a set of routines,
   protocols, and tools for building software applications for handling
   time-based data, while the Image Compression Manager provides
   services for dealing with compressed raster data as produced by
   video and photo codec.
• Solaris Live:- multimedia environment for Sun’s workstations
  - an imaging library and APIs to support the capture, display,
   compression, decompression, transformation of videos and images
  - libraries for 2D and 3D graphics applications.
                      Authoring Tools
• Authorware Professional
 - from Macromedia, is a cross-platform package one non-
    programming designer can even do the entire job alone.
 - allows the developer to edit presentations on either Macintosh or
    Windows
 - can display and erase graphics, move or animate objects, play AVI
    and Quick Time digital movies as well as WAV sound files, and
    access videodisk and videotape players.
• MacroMedia Director
  - runs on Mac and Windows, created by Macromedia—now part of
    Adobe Systems
  - tool for creating professional multimedia presentations, animations,
    interactive applications and movies
  - supports an interactive scripting language called Lingo used for
    regular desktop applications, interactive kiosks
• HyperCard
  - software designed by Apple and thus only runs on Macintosh, the
   first successful hypermedia systems before the World Wide Web.
  - User can stores information- a mixture of text, graphics and sound
  - HyperCard also features HyperTalk, a programming language for
   manipulating data and the user interface or Hypermedia
   development
• IconAuthor
  - software given by AimTech Corp, uses a visual programming
   approach rather than scripting language to define the interaction
   and the flow of control
  - helps in creating different icons for presentation and interaction
• LinkWay
  - product by IBM, for PCs under DOS, designed to work with its
   audio and video adapters
  - used by teachers and courseware developers to create interactive
   applications for training and education
• Storyboard Live!
  - given by IBM, use to develop presentations, kiosks applications and
   movies.
  - consists of five modules, that are:-
    Electronic Presentations, creates the storyline for the presentation.
    Picture Maker, used to edit images and graphics.
    Story Editor to include video from camera or other source.
    Picture Taker to capture and import screen images.
    Story Teller to play back the presentations.
• Multimedia Toolbook
  - software designed by Asymetrix is a visual programming system,
   compatible to run on Windows, used to provide animations and full
   motion video editing
  - supports a scripting language called OpenScript, enables you to
   add program control to your application.
•     ScriptX
    - ScriptX is a multimedia-oriented development environment
     created in 1990 by Kaleida Labs, works across multiple hardware
     platforms and operating systems.
    - Unlike the authoring packages such as Macromedia Director,
     ScriptX is not an authoring tool for creating multimedia titles,
     although it does come with a built-in authoring tool.
    - it is a general-purpose, object-oriented, multiplatform
     development environment that includes a dynamic language and a
     class library.
    - ScriptX has three major components: the Kaleida Media Player, the
     ScriptX Language Kit, and application development and authoring
     tools.
    - Developers can now create a single application for the Kaleida
     Media Player instead of targeting specific operating systems like
     Mac OS and Microsoft Windows.
                            Standards
• SGML
 - Standard Generalized Markup Language is an ISO-standard
    technology for defining generalized markup languages for
    documents
 - This standard covers the contents of a document and its logical
    structure in terms of headers and paragraphs.
 - HTML, XHTML, and XML are all examples of SGML-based languages.
 - SGML is based on Document type Definitions (DTDs)
 - itself does not specify any particular formatting; rather, it specifies
    the rules for tagging elements.
 - SGML is used widely to manage large documents that are subject to
    frequent revisions and need to be printed in different formats.

				
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