intro to multimedia systems
TRANSCRIPT
IT31 – Multimedia SystemsPrepared by: Ocirne Jun-Jun S. Liwanag
What is Multimedia?Multimedia is media and
content that uses a combination of different content forms. Multimedia includes a combination of text, audio, still images, animation, video, and interactivity content forms.
Multimedia Application is an Application which uses a collection of multiple media sources e.g. text, graphics, images, sound/audio, animation and/or video.
What is HyperText and HyperMedia?Hypertext is a text which
contains links to other texts. (e.g. PDF Documents, Word Documents)
HyperMedia is not constrained
to be text-based. It can include other media, e.g., graphics, images, and especially the continuous media - sound and video. (e.g. WWW)
MULTIMEDIA SYSTEMSA Multimedia System is a
system capable of processing multimedia data and applications.
Characteristics of a Multimedia SystemMultimedia systems must be
computer controlled.Multimedia systems are
integrated.The information they handle
must be represented digitally.The interface to the final
presentation of media is usually interactive.
Components of a Multimedia SystemCapture devices
◦Video Camera, Video Recorder, Audio Microphone, Keyboards, mice, graphics tablets, 3D input devices, tactile sensors, VR devices. Digitizing/Sampling Hardware
Storage Devices◦Hard disks, CD-ROMs, Zip drives, DVD, etc
Communication Networks◦Ethernet, Token Ring, FDDI, ATM, Intranets,
Internets.
Components of a Multimedia System (2)Computer Systems
◦Multimedia Desktop machines, Workstations, MPEG/VIDEO/DSP Hardware
Display Devices◦CD-quality speakers, HDTV,SVGA, Hi-
Res monitors, Color printers etc.
Examples of Multimedia Applications include:World Wide WebHypermedia coursewareVideo conferencingVideo-on-demandInteractive TVGroupwareHome shoppingGamesVirtual realityDigital video editing and production systemsMultimedia Database systems
CATEGORIZATION OF MULTIMEDIALinear active content progresses
without any navigation 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 MULTIMEDIAText - Displays word on the screen –
is the base layer of almost all programs. Text is still the quickest programs will always use it.
Pictures - Multimedia computers can display photograph quality pictures on the monitor.
Movies - With a multimedia program, your computer can turn into a TV set.
ELEMENTS OF MULTIMEDIAAnimation - Sometimes
animation can express a point better than movies.
Sound - A biting dinosaur isn’t much impressive unless you can hear the bone crunches well.