Multimedia ComponentsMultimedia Components(Develop & Delivery System)(Develop & Delivery System)

Introduction

Multimedia Computer develop system

Multimedia Application Develop

Multimedia Personal Computer

System requirement for MM Develop

Multimedia Delivery system

IntroductionIntroduction

Hardware environment for developing multimedia

Multimedia programs with digital sound, stills, animation, and motion video increase the required performance needs of a personal computer to a completely new level

Technology has moved forward with faster, more efficient microprocessors suchas the Power Mac and Pentium

MM Computer Development system

Typical Hardware Components of MPC

Features of MM Computer Development systemFeatures of MM Computer Development system¥ Windows-based and Macintosh computers are used to create multimedia titles. Because the Macintosh was the first popular personal computer to provide a graphical interface - has superior handling of graphics and cross-platform capabilities, it has been used extensively in multimedia development.

¥ Today, a Pentium III 500 processor is considered the minimum needed for development work. A Pentium tit 750 or better is desirable

¥Multimedia titles are extremely memory-intensive. 128 MB of RAM min Req., with 256 MB being more desirable.

¥For video -digitized using a video capture card. The card fits internally within the computer, and a video source (camera, VCR, TV) is then plugged into the card.

MPC standards for Multimedia Computer

Multimedia ComponentsMultimedia Components(Computer Architecture)(Computer Architecture)

Hardware Hardware ElementsElements

InputInput outputoutput MemoryMemory Specialized MM Specialized MM

HardwareHardware

Storage devicesStorage devices Operating Operating

SystemSystem Digital Audio Digital Audio

and Video and Video CapturingCapturing

hardware components of the basic computer model communicate with microprocessor

software components of the compter communicate with the operating system

Multimedia applications offer significant challenges to computer architecture in terms of its ability to:

Input various data formats

Store and retrieve digital multimedia data

Manipulate and edit multimedia data; for example, editing graphics, audio, and digital video files

Output multimedia data including converting digital version into an analog format suitable for the end user

Hardware Elements in MM Computer

Hardware Comp of Multimedia

Computer System

Inputs:Keyboards- also special layouts for limiting and controlling user input

Mouse-also track balls, joysticks, and similar devicesGraphic tablets-used in drawing and painting applicationsScanner-capable of capturing images ranging from black and white to millions of colorsDigital camera-capable of capturing and converting images and video directly into a computer-digital formatAnalog audio input from microphones and audio player sourcesAnalog video input- raw and processed video input. Some hardware systems even decode television signals for display.Network support for distribution of multimedia filesModem

OutputsHigh resolution monitors capable of displaying black and white to millions of colors. A 256-color display is considered the minimum requirement for multimedia display.

Specialized projection devices to replace or augment single user monitor/displays for larger audiences. These devices usually function in lieu of or simultaneously with a computer monitor.

Audio output to speakers or to other audio devices such as amplifiers or tape devices.

Raw video output for television monitor display-the computer typically creates a television video compatible signal

Specialized Multimedia Hardware

•Multimedia hardware focuses on the ability to capture, store, and present text, pictures, audio, and video.

•Each type of data, the computer must be able to convert it into digital format and store that data in a file. This file can then be edited and/or applied into a multimedia presentation product.

•The presentation software, in conjunction with the operating system, then converts the data back into an analog format that can be viewed, heard, or experienced by an end user

Fig 3.8Fig 3.8Cost Comparison of various forms of Storage

Types

of

Storage

devices

Access methodsAccess methods

Sequential access: records must Sequential access: records must be retrieved in orderbe retrieved in order

Direct access: records can be Direct access: records can be retrieved in any orderretrieved in any order– Direct access storage devices Direct access storage devices

(DASDs)(DASDs)

Devices and Media: Devices and Media: Magnetic MediaMagnetic Media

Magnetic tapesMagnetic tapes Magnetic disksMagnetic disks RAIDRAID Storage Area networks (SAN)Storage Area networks (SAN)

Devices and Media: Devices and Media: Optical MediaOptical Media

Optical disksOptical disks– CD-ROMCD-ROM– CD-W (aka WORM)CD-W (aka WORM)– CD-RWCD-RW

Magneto-optical (MO) disksMagneto-optical (MO) disks Digital video disks (DVDs)Digital video disks (DVDs)

Three Stages of Audio and video Capture, storage

and Playback

Video hardware consists of devices to display and capture video. Video display devices, often called graphics adapters, enable the computer to present information on monitors capable of displaying up to 16 million colors