ATSC: Digital Television Update · A2 Advanced Television Systems Committee. Options for DTV...
Transcript of ATSC: Digital Television Update · A2 Advanced Television Systems Committee. Options for DTV...
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ATSC: Digital Television Update
Robert GravesAdvanced Television Systems Committee
ITU Interregional Seminar on the Transition from SECAM to Digital TV Broadcasting
Kiev, UkraineNovember 13, 2000
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q Technical Standards for Digital Television (DTV)q DTV Implementation ActivitiesqMembership Organization -- International
– Open to all organizations with a related interest– Broad, cross-industry participation
• Broadcasters, cable, satellite, computer, movie & telecom service providers
• Consumer electronics, computer & professional equipment companies
q Over 200 Members– Growing
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Advanced Television Systems Committee
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Options for DTV Business Models
q HDTV (one or two programs)q HDTV + SDTV (e.g., weather, news, alternative program)q Multiple programs of SDTVq Data services
– Program-related or not– Interactive or one-way
q Combinations of HDTV, SDTV, data servicesq Programs or data to mobile receivers?
– Severe trade-off against deliverable bit rateq Broadcast to TVs, PCs, or convergence productsq Free-to-air vs. pay servicesq Impact of potential government requirements
– Minimum HDTV requirements?
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DTV CHANNEL ASSIGNMENTS IN THE U.S. (VHF and UHF)
Spectrum Efficiency
CURRENT NTSC CHANNEL DISTRIBUTION
18 12 42 138 192 =
2-4 5-6 7 - 13 14 - 36 38 - 69
DTV CHANNEL ALLOCATION - END OF TRANSITION
18 12 42 138 84 = 294 MHz
108 MHz RECOVERED
2-4 5-6 7 - 13 14 - 36 38 - 5152 – 69
(recovered)
CORE DTV SPECTRUM
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qCurrent requirement:– 120 Stations– 30 Metropolitan Areas
qActual deployment, as of November 2, 2000 – 160 Stations– 56 Metropolitan Areas – Covering 65% of U.S.
TV Households
Progress in DTV Deployment
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10010101001101001110110
Source: U.S. National Association of Broadcasters
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A Range of Consumer Products
Set-Top Box Integrated Receiver Computer
All can decode and display HDTV & SDTV
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Terrestrial & Satellite Set-Top Boxes
$549
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Integrated Receiver with HDTV Display
Starting at $2,000
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Plug-in PC Card
$200 - $300
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Manufacturers of ATSC Receivers*q ATSC receivers are available from over 20
manufacturers including:Zenith/LGE Sony PanasonicSamsung Sharp CreativeLabs Philips Thomson Happauge Funai Tatung ToshibaSanyo Skyworth Zinwell Prima Digitra DSC Mitsubishi Teleview MonoVision/Chun YunHughes Network Systems
q Prices have fallen approximately 50% in two years, expected to fall 50% more in next two years
* Including VSB Demodulator
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Sales of DTV Products
qSales to date (as of September 30, 2000)– HDTV-capable displays ~440,000– DTV receivers & set-tops ~90,000
qDTV receiver penetration by 2006– Abundant DTV Programming 50%– Average DTV Programming 30%– Minimal DTV Programming 15%
Based on Consumer Electronics Association data
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U.S. Consumers Are Satisfied
q“DTV is meeting and even exceeding consumer expectations.”– Gary Shapiro - President and CEO, Consumer Electronics
Association
qNational Consumer League survey* shows overwhelming satisfaction with DTV products– 96% consumers satisfaction with picture quality– 89% consumer satisfaction with audio quality– Biggest concern is lack of compelling HDTV programming
* Conducted May 31-June 14, 2000
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HDTV Broadcasting in the U.S.q CBS
– Full primetime evening schedule– NCAA Final Four, Masters Golf, U.S. Open Tennis,
NFL football games/Super Bowlq ABC
– Feature films– ’99-’00 NFL football games
q NBC– The Tonight Show With Jay Leno– The Titanic
q PBS– Special programs, repeated frequently
q Local Stations– Local programs, including news and DTV/HDTV education programs
q DirecTV & Dish Network– HBO, Showtime – Pay-per-view programming
q Cable networks (only a few systems so far)– Feature films– Selected sports events
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High-Definition Television
qNo longer a question of whether HDTV will be successfulqWill it be a primary service
of terrestrial broadcasting?– Satellite– Cable– DVD
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Transmission & Reception Issues
q Driven by broadcasters, not consumersq Issues
– Adequacy of indoor reception– Receiver implementation shortcomings vs. modulation standard problems– Increasing interest in mobile services
q FCC – Rejected proposal to add COFDM as an option
• VSB receiver improvements will resolve problems• Adding COFDM would create incompatibility, customer confusion, delay
– Testing VSB receiver improvements in Washington & Baltimore
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Transmission & Reception Issues (cont.)
q Industry– ATSC Task Force assessing RF System Performance– Broadcaster industry organizations conducting tests, soliciting and
funding VSB improvements
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ATSC Task Force on RF System Performance
qFormed March, 2000qExamining technical issues re RF system performanceqDeveloping recommendations to ATSC Executive
Committee for technical initiativesq~ 100 members and non-members participatingqWork areas include:
– Assessments of current 8-VSB performance and prospects for improvement – nearly complete
– Existing and emerging broadcaster requirements - complete– Uniform field test procedures – complete
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