1 / 12

Gary Floring COM 538: Evolution and Trends in Digital Media Technologies Instructor: Kathy Gill

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

delta
Download Presentation

Gary Floring COM 538: Evolution and Trends in Digital Media Technologies Instructor: Kathy Gill

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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.

  7. Video Media Technology The Present Digital Media Capacity Comparison* Floppy Diskette (non-video data) CD DVD (4.7 GB) ■ 1.44 MB (700 MB)

  8. 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

  9. 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

  10. 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

  11. 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

  12. Video Media Technology Q & A Questions?

More Related