Multimedia system
Download
1 / 20

Multimedia System - PowerPoint PPT Presentation


  • 154 Views
  • Uploaded on

Multimedia System. Group member Name: Lim Lee Sa (wet020071) - Introduction Ling Hung Ping (wet020075)- characteristic Ooi Li Ching(wet020141)- features Tan Pey Shy(wet020173)- type of multimedia system Tan Wee Seong (wet020176)- example. Introduction.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Multimedia System' - chuong


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Multimedia system

Multimedia System

Group member Name:

Lim Lee Sa (wet020071) - Introduction

Ling Hung Ping (wet020075)- characteristic

Ooi Li Ching(wet020141)- features

Tan Pey Shy(wet020173)- type of multimedia system

Tan Wee Seong (wet020176)- example


Introduction
Introduction

  • Multimedia system is a computer (machine) that can transmit and accept information (multiple media) from the external world.

  • supports the integrated storage, transmission and representation of the discrete media types text, graphics and image and the continuous media types audio and video on a digital computer.



01001000

01000101

01001100

01001100

01001111

10101110000101000010101000000011

10101111111110100000010101010001

Different form of media types:

Audio file

10000000000011111010101010001011111111111

01111100000010101010001010010000010101010

10111111110100001000101010101010000100010

11110111000000101010111111111111011100000

11111111111111111111000000000000001010100

00000000000000000001000010000111111111000

Data file

Video file

1111111111111000000000011

1111010000001000100101000

1111111111000000000011110

1100000010000010001000000

1111111101000001111101001

1110100000000001000100000

  • 11000 1110

  • 11101 11001 0001

  • 11000 1110

  • 11001 0001

  • 11100 11000 1110

  • 11101 11001 0001

Image file

Graphics file


Characteristic
Characteristic

  • Generation or capture of data

  • Processing such as digitalize

  • Storage in devices

  • Manipulate using software such as photoshop

  • Distribution over LAN or WAN network

  • Output using devices such as monitor

  • Rendering

  • representation,

  • transmission

  • several time-dependent and time-independent media streams



Features
Features

  • Very high processing power

  • A file system capable of handling multimedia information

  • File formats that exploit the inherent properties of the multimedia information

  • Efficient and high I/O rate

  • Multimedia operating system

  • Storage and memory

  • Network support

  • Software tools


Features1
Features

  • Very high processing power

    - In the modern multimedia context, movement and processing of large amounts of data in real-time are emphasized.

    - Include support hardware such as graphics and video adapters, digital signal processors and etc.

  • A file system capable of handling multimedia information

    - File systems should have the capability to deal with streams of data, such as video and audio.


  • File formats that exploit the inherent properties of the multimedia information

    - The file formats should be easy to handle from the file system point of view.

  • Efficient and high I/O rate

    - The input and output subsystem should be able to handle large storage.

    - The controller hardware should be able to provide recording and reading of data from these storages.


  • Multimedia operating system multimedia information

    - An efficient file system and data structures are required to provide support for direct transfers.

    - Disk to NIU, real time scheduling of tasks, fast interrupt processing and streams.

  • Storage and memory

    - Caches have to be larger and may have to be in a 2 or 3 level hierarchy for efficient management.


  • Network support multimedia information

    - To apply client-server paradigm in building multimedia application, high-speed support from the network subsystem is needed.

    - It should be able to stream the data out of the disk directly, to minimize delay.

  • Software tools

    - Need to be user friendly, as they have to handle a variety of media at the same time.

    - To make things easier, tools should support object-oriented software design and development methodologies.


Types of multimedia systems

Disk multimedia information

CPU

I/O

MEM

NIU

Display, Audio

Controller

Display

Types of Multimedia Systems

Type I

Standalone

Multimedia

system

  • Example: Authoring system and multimedia presentation system

CPU


Disk multimedia information

Disk

CPU

I/O

MEM

CPU

I/O

MEM

NIU

Display, Audio

Controller

Display, Audio

Controller

NIU

Display

Display

Type IIPeer-to-peer Multimedia system

  • Example: multimedia workstation-based conferencing system

DEDICATED LINK

(Physical or Logical)


Disk multimedia information

CPU

I/O

MEM

NIU

Display, Audio

Controller

Display

Type IIIDistributed Multimedia system

  • Exist in a large interconnected networks

  • Examples: Internet and corporate networks

Disk

HIGH

SPEED

NETWORK

CPU

I/O

MEM

Display, Audio

Controller

NIU


Examples

Data transmitted to satellite via uplink in Isleworth multimedia information

Data travels a round trip of 44,000 miles before reaching the user

Data encoded and encrypted

Examples

Digital satellite: TV program

Data unencrypted, decoded in the Digibox and viewed on standard TV


  • When broadcasting audio and video the following has to happen; compression (to MPEG-2); encryption, this is the encoding of television signals or data for security purposes.

  • Example: to restrict reception to authorised viewers only or by online communication, to keep them private; and Transmission.

  • Transmission sees the data sent to the Astra 1 satellite in space on a geostationary orbit.

  • The satellite then fires the data back and 100% availability over a large areas including those more derelict places as long as you can point your minidisk at the Astra 22.8 degrees east satellite, and do not have a building or other obstruction in the direct line of sight.


Internet-based Game-On-demand happen; compression (to MPEG-2); encryption, this is the encoding of television signals or data for security purposes.


Multimedia Home platform specification (MHP) happen; compression (to MPEG-2); encryption, this is the encoding of television signals or data for security purposes. is a generic interface between digital applications and user machines, whether they happen to be set top boxes, digital TV sets or Multimedia Pc’s. MHP extends the DVB open standards. Addressed are MHP architecture, System core, and MHP Profiles.


  • The Radio Frequency (RF) Input (from satellite dish/aerial) is demodulated into an MPEG-2 stream.

  • spliced into its video, audio, subtitle, and data streams, and passed on to the CPU and Operating system.

  • The data stream (usually image files) has its own dedicated rendering engine and is directly passed to the on screen display.

  • The data streams are examined for system information, teletext or MHP data object, and then routed via device drivers to the hardware/software modules for interpretation and execution.


Thank You is demodulated into an MPEG-2 stream.


ad