Chapter 2 Multimedia Systems - FTMS

MMGD0101INTRODUCTION TO MULTIMEDIAChapter 2Multimedia Systems

Definition of MultimediaSystemA Multimedia System is asystem capable ofprocessing multimedia dataand applications. It ischaracterized by theprocessing, storage,generation, manipulationand rendition of Multimediainformation.

Definition of MultimediaSystemThe differences between print and multimedia: Different modes of display Interactivity and involvement of participants inmultimedia systems Ease of distribution Authority of document

Characteristics of aMultimedia SystemsA Multimedia systems has four basiccharacteristics: Multimedia systems must be computercontrolled. Multimedia systems are integrated. The information they handle must berepresented digitally. The interface to the final presentation of mediais usually interactive.

Characteristics of aMultimedia SystemsComputer Controlled Producing the content of the information – e.g. byusing the authoring tools, image editor, sound andvideo editorStoring 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 aMultimedia SystemsIntegrated 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 aMultimedia SystemsInteractivity 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 aMultimedia SystemsDigitally Represented Digitization: process involved in transforming ananalog signal to digital signal.

Challenges for MultimediaSystemsThe key issues multimedia systems needto deal with here are: How to represent and store temporalinformation.How to strictly maintain the temporalrelationships on play back/retrieval.What process are involved in the above.

Desirable Features for aMultimedia System Very High Processing Power Multimedia Capable File System Data Representations/File Formatssupport multimedia Efficient and High I/O Special Operating System Storage and Memory Network Support Software Toolsthat

Components of aMultimedia SystemCapture Devices Video CameraVideo RecorderAudio MicrophoneKeyboardsMice Graphics tablets3D input devicesTactile sensorsVR devicesDigitizing/SamplingHardware

Components of aMultimedia SystemStorage Devices Hard disk drive Zip drive Compact Disc Digital Versatile Disc Bluray Disc

Components of aMultimedia SystemCommunication Networks Ethernet Token Ring Fiber Distributed DataInterface (FDDI) Asynchronous TransferMode Intranets Internets

Components of aMultimedia SystemComputer Systems Desktop computerProcessorRAMDisplay card Sound card Capture card

Components of aMultimedia SystemDisplay Devices High resolution monitor High quality speakers Color printer Projector

Class ActivityExerciseGroup discussion. You are require to set up a MultimediaSystems. Identify the components and budget to set upthe system. Present to the class.

Multimedia Systems Computer Controlled Producing the content of the information –e.g. by using the authoring tools, image editor, sound and video editor Storing the information –providing large and shared capacity for multimedia information. Transmitting the information –through the network.