slide1
Download
Skip this Video
Download Presentation
Gary Floring COM 538: Evolution and Trends in Digital Media Technologies Instructor: Kathy Gill University of Washingto

Loading in 2 Seconds...

play fullscreen
1 / 12

Gary Floring COM 538: Evolution and Trends in Digital Media Technologies Instructor: Kathy Gill University of Washingto - PowerPoint PPT Presentation


  • 315 Views
  • Uploaded on

Video Media Technology. Past, Present, and Future. Gary Floring COM 538: Evolution and Trends in Digital Media Technologies Instructor: Kathy Gill University of Washington – Seattle Fall 2003. Video Media Technology Outline. Topics of Discussion. Introduction Purpose / Thesis

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 'Gary Floring COM 538: Evolution and Trends in Digital Media Technologies Instructor: Kathy Gill University of Washingto' - Angelica


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
slide1
Video Media Technology

Past, Present, and Future

Gary Floring

COM 538: Evolution and Trends in Digital Media Technologies

Instructor: Kathy Gill

University of Washington – Seattle

Fall 2003

slide2
Video Media Technology

Outline

Topics of Discussion

  • Introduction
  • Purpose / Thesis
  • The Past - ANALOG
  • The Present – DIGITAL
  • Media Capacity Comparison
  • Innovation-Diffusion Theory
  • The Future – Next Generation DVD
  • Conclusions and Projections
  • Q & A
slide3
Video Media Technology

Introductionand Purpose / Thesis

  • Definitions & Terminology
  • VIDEO: Root English word is vision, from the Latin videre, “to see”
  • -- Originally, video referred to ”what is visible” in a TV broadcast
  • MEDIA: Plural of medium, from the Latin medius, “the middle”
  • ANALOG: Continuously varying value, such as a sine wave…
  • DIGITAL: Discrete values representing data samples…
  • DVD: Digital Versatile Disc
  • Purpose / Thesis
  • Examine the development of video media technology over the past 50 years
  • Identify DVD technology as a major innovation process currently having a rapid
  • diffusion throughout social systems
  • Determine current trends in the market battle over modern media formats
  • and standardization; understand impacts on popular culture & end user needs
  • Contribute useful data / findings to the communications discipline on
  • modern video media applications
slide4
Video Media Technology

The Past - ANALOG

  • Video Media 1890s to 1950s
  • 1891: Thomas Edison invents Kinetoscope;
  • others patented similar devices
  • Late 19th century to mid-20th century:
  • plastic and celluloid film media
  • Post-WWII: magnetic-based videotape
  • developed for television broadcasts

Early 20th century Kinetoscope

  • Apr. 1956: Ampex Corporation demonstrates
  • world’s first videotape recorder (VTR)
  • Nov. 1956: CBS is first network to
  • broadcast using videotape
  • Nov. 1957: KING-TV studios in Seattle
  • received one of the first production VTRs

Ampex VRX-1000, world’s first videotape recorder

slide5
Video Media Technology

The Past - ANALOG

  • Video Media 1960s to 1980s
  • 1960s: Sony and other Japanese companies
  • challenge Ampex for VTR dominance
  • 1970s: Sony emerges as a major innovator,
  • introducing several advances in media
  • and hardware miniaturization
  • 1975: Sony unveils Betamax, its flagship
  • consumer VCR; pricey but very popular

Sony SL-7200 Betamax VCR; $1,295

  • 1976: JVC fights back with cheaper, rival VHS system
  • 1977: Beta vs. VHS “format war” is on!
  • 1978: VHS introduces two major innovations
  • which consumers adopt immediately:
  • -- Two hour tapes vs. Beta’s one hour
  • -- RCA’s programmable VCT-400 allows time-shifting / tape delay recording
  • 1980s: VHS outsells Sony’s Beta VCRs and tape format 4 to 1
  • 1990s: Beta format widely considered obsolete; VHS had “won” the war

BETA

VHS

slide6
Video Media Technology

The Present -- DIGITAL

Major Portable Media Types *

Magnetic Tape (DV) Compact Disc (CD) Digital Versatile Disc (DVD)

  • Records / stores “raw”
  • digital video signal;
  • little or no compression
  • Widely used in camcorders
  • Disadvantages:
  • Prone to signal dropout,
  • fading, stretching,
  • age-degradation
  • Records / stores digital
  • video using MPEG-1
  • compression
  • Capable of ~1 hour of VHS-
  • quality video (240 lines res.)
  • 700 MB capacity
  • Advantages:
  • Long term, non-volatile;
  • compatible with most
  • CD-DVD playback devices
  • Records / stores digital
  • video using MPEG-2
  • compression
  • Capable of ~2 hours of High
  • Quality video (480 lines res.)
  • 4.7 GB capacity
  • Advantages:
  • Long term, non-volatile;
  • very high resolution; allows
  • chapter and menu creation

* For this study, computer hard drives

are excluded as “non-portable” media.

slide7
Video Media Technology

The Present

Digital Media Capacity Comparison*

Floppy Diskette

(non-video data)

CD

DVD (4.7 GB)

1.44

MB

(700 MB)

slide8
Video Media Technology

Communications Theory

Annual

DVD

Sales

(billions)

Innovation-Diffusion Process

7

6

5

4

3

2

1

0

Pre-recorded DVDs

Recordable DVDs

Next Generation DVD

1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008

slide9
Video Media Technology

The Present

Recordable DVD Format Choices

  • Currently a “format war” underway
  • DVD-RAM
  • DVD-R/-RW
  • DVD+R/+RW
  • DVD+VR
  • “General” Type for mass consumers
  • “Authoring” Type for professionals
  • All use “red laser” technology
  • Quality differences are not significant
  • Manufacturers currently introducing
  • “multi-format” recorders(e.g., Sony DRU 510A)

Red laser technology

for “burning” and playback

Laser beam wavelength is 650 nm,

with a focal point 350 nm wide

Findings to date indicate -R/-RW and +R/+RW formats exhibit highest

consumer adoption rates; -R and +R have widest compatibility

slide10
Video Media Technology

The Future

Next Generation DVD

  • Currently under development, new DVD
  • format uses “blue laser” technology
  • Much greater storage capacity; up to 30 GB
  • -- Over 6 times greater than current DVDs
  • Developed to handle storage demands of
  • High Definition Television (HDTV)
  • -- Over 1,000 lines of resolution
  • “Backward compatibility” planned
  • with current DVDs; however…
  • Standardization war already under way
  • between Sony and Toshiba / NEC
  • -- Sony promoting “Blu-ray” format
  • -- Toshiba / NEC promoting “HD-DVD” format

Blue laser technology

for “burning” and playback

Laser beam wavelength is 405 nm,

with a focal point 70 nm wide

First blue laser discs and hardware expected in U.S. market in 2005

slide11
Video Media Technology

The Future

Conclusions & Projections

Digital Media Technology will Continue to Rapidly Advance

  • Adoption of DVD technology has been “revolutionary” vs. evolutionary
  • Hollywood will use traditional film indefinitely
  • VHS and DV magnetic tape use will gradually decline as disc media dominates
  • Current DVD format wars will be decided by consumers; –R and +R are leading
  • Multi-format hardware will ease standardization issue
  • Next generation blue laser DVD will accelerate trend toward HDTV this decade
  • Sony’s “Blu-ray” format more likely to dominate Toshiba / NEC’s

-- More than 25% greater storage capacity than rival HD-DVD

-- Builds on current MPEG-2 compression standard for backward compatibility

  • Nanotechnology will drive storage capacities much higher within 5 years

-- By 2010, DVDs will be capable of holding over 100 GB

slide12
Video Media Technology

Q & A

Questions?

ad