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HDTV/DTV: Technical Overview and Roadmap Dr. Nikhil Balram Vice President of Advanced Technology Faroudja Laboratories, Sunnyvale, CA IEEE Communications.

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Presentation on theme: "HDTV/DTV: Technical Overview and Roadmap Dr. Nikhil Balram Vice President of Advanced Technology Faroudja Laboratories, Sunnyvale, CA IEEE Communications."— Presentation transcript:

1 HDTV/DTV: Technical Overview and Roadmap Dr. Nikhil Balram Vice President of Advanced Technology Faroudja Laboratories, Sunnyvale, CA IEEE Communications Society Seminar, 10th November 1999

2 Overview uHDTV/DTV Overview History & current statusHistory & current status Technical overviewTechnical overview Major playersMajor players Barriers to rapid penetration/deploymentBarriers to rapid penetration/deployment uSource uChannel uReceiver/Display uForecasts uSummary uAcknowledgements uReferences uDisclaimer: All opinions/material presented in this seminar are solely the responsibility of the author and do not necessarily represent the views of current or past employers. Any trademarks or brand names mentioned here are the properties of their respective holders and are hereby acknowledged.

3 HDTV/DTV Overview uHistory uTechnical overview uMajor players uBarriers to rapid penetration/deployment

4 History HDTV/DTV Overview u1987 Broadcasters petition FCC to institute rules for terrestrial HDTV broadcastBroadcasters petition FCC to institute rules for terrestrial HDTV broadcast FCC creates Advisory Committee on Advanced Television Services (ACATS) to gather information and recommend a standardFCC creates Advisory Committee on Advanced Television Services (ACATS) to gather information and recommend a standard u1988 US Broadcasters create Advanced Television Test Center (ATTC) to conduct tests of the proposed systemsUS Broadcasters create Advanced Television Test Center (ATTC) to conduct tests of the proposed systems u1989/90 Cable industry through Cable Television Labs (CableLabs) prepares to test proposed Advanced Television (ATV) systems over cable networksCable industry through Cable Television Labs (CableLabs) prepares to test proposed Advanced Television (ATV) systems over cable networks 9 systems offered to ATTC for testing: all analog except Zenith hybrid9 systems offered to ATTC for testing: all analog except Zenith hybrid –Faroudja Labs, MIT, North American Phillips (NAP), Production Services Inc., Zenith Electronics, 2 from David Sarnoff Research Center (DSRC), 2 from Japan Broadcasting Corporation (NHK)

5 History (cont.) HDTV/DTV Overview u1990/91 FCC favors simulcast (full HDTV with eventual shutdown of NTSC) versus augmentationFCC favors simulcast (full HDTV with eventual shutdown of NTSC) versus augmentation Shift to digital started by General Instruments (GI) DigiCipherShift to digital started by General Instruments (GI) DigiCipher 6 systems (4 digital) from different coalitions tested by ATTC6 systems (4 digital) from different coalitions tested by ATTC u1992 Advanced Television Systems Committee (ATSC) agrees to coordinate task of documenting standard chosen by FCCAdvanced Television Systems Committee (ATSC) agrees to coordinate task of documenting standard chosen by FCC u1993 Analog options eliminatedAnalog options eliminated Proponents of the 4 digital systems form Grand Alliance (GA)Proponents of the 4 digital systems form Grand Alliance (GA) – AT&T, DSRC, GI, MIT, NAP, Thomson Consumer Electronics, Zenith Electronics u1994 ACATS approves GA systemACATS approves GA system u1995/96 ATSC documents and approves standard based on GA systemATSC documents and approves standard based on GA system

6 History (cont.) HDTV/DTV Overview u1996 FCC proposes to adopt GA system as documented by ATSCFCC proposes to adopt GA system as documented by ATSC Computer Industry Coalition on Advanced Television Services (CICATS) files strong objection and proposes progressive SDTV with future path to HDTV through an augmentation signalComputer Industry Coalition on Advanced Television Services (CICATS) files strong objection and proposes progressive SDTV with future path to HDTV through an augmentation signal uDec FCC adopts ATSC DTV standard except for table 3 with 18 formats (6 HD, 12 SD)FCC adopts ATSC DTV standard except for table 3 with 18 formats (6 HD, 12 SD) u1997 HDTV rollout schedule agreed toHDTV rollout schedule agreed to –Some stations in top 10 markets to offer some programming by November 1, 1998 –Top 10 markets (covering 30% of US households) to be on air by May 1, 1999 –Top 30 markets (covering 50% of US households) to be on air by November 1, 1999 –All commercial stations on air by May 1, 2002, (public stations get 1 more year) –NTSC broadcasting to cease on May 1, 2006, (later changed to whenever 85% of market is using HDTV sets) uNov 1998 HDTV broadcasts beginHDTV broadcasts begin

7 Current Status HDTV/DTV Overview uNovember 1999 OverallOverall –474 TV stations have filed construction permit applications –220 have been granted DTV construction permits –66 are on air with full facilities –25 are on air with special or experimental DTV authority Top 10 market network affiliates - 40 stationsTop 10 market network affiliates - 40 stations –32 are on air with full facilities –8 have requested second extensions Markets network affiliates - 79 stationsMarkets network affiliates - 79 stations –20 are on air with full facilities uSee for more information

8 Technical Overview HDTV/DTV Overview uVideo: MPEG2 Main High Level Main High Level 18 formats: 6 HD, 12 SD18 formats: 6 HD, 12 SD uAudio: Dolby AC-3Dolby AC-3 uTransport: Subset of MPEG2Subset of MPEG2 Fixed length 188-byte packetsFixed length 188-byte packets uRF/Transmission: Terrestrial:Terrestrial: –8-VSB (Vestigial Side Band) with Trellis coding –effective payload of ~19.3 Mb/s (18.9 Mb/s used for video) Cable:Cable: –16-VSB –effective payload of ~38.6 Mb/s

9 HDTV/DTV System Layers Picture Layer Compression Layer Transport Layer Transmission Layer MPEG-2 packets MPEG-2 video and Dolby AC-3 compression syntax Multiple Picture Formats and Frame Rates Multiple Picture Formats and Frame Rates 8-VSB Video packet Audio packet Aux data Data Headers Motion Vectors Chroma and Luma DCT Coefficients Variable Length Codes layered system with header/descriptors Flexible delivery of data and future extensability Flexible delivery of data and future extensability 19.3 Mb/s Packet Headers 996 Mb/s 1920 x Source:Sarnoff Corporation HDTV/DTV Overview 6 MHz

10 HDTV/DTV MPEG2 Transport audio 1...packets with header/descriptors enable flexiblility and features... video TEXT videoaudio 2PGM GD video Many services can be dynamically multiplexed and delivered to the viewer video 184 Byte Payload (incl. optional Adaptation Header) 188 Byte Packet 4 Byte Packet Header Video Adaptation Header (variable length) Source:Sarnoff Corporation Packet sync Type of data the packet carries Packet loss/misordering protection Encryption control Priority (optional) Time synchronization Media synchronization Random access flag Bit stream splice point flag HDTV/DTV Overview

11 MPEG2 Video Basics: Sequence (Display Order) GOP (Display Order, N=12, M=3) Picture Slice MacroBlock Y Cr Cb Y Blocks Cr Block Cb Block BBBBBBBBIPP P Note: Y = Luma Cr = Red-Y Cb = Blue-Y Source:Sarnoff Corporation HDTV/DTV Overview

12 MPEG2 Video Basics HDTV/DTV Overview uMPEG2 Profiles/Levels MPEG specification is generic - intended to cover wide range of applicationsMPEG specification is generic - intended to cover wide range of applications Profiles and Levels used to put bounds around parameters for applicationsProfiles and Levels used to put bounds around parameters for applications –Profile is subset of bitstream syntax –Level constrains parameters within allowed syntax Main Main Level - DVDMain Main Level - DVD –4:2:0 I,P,B, bit rates up to 15 Mb/s Main High Level - HDTVMain High Level - HDTV –4:2:0 I,P,B, bit rates up to 80 Mb/s uBlock Diagram of MPEG2 Encoder Motion Compensation DCT Previous & Future Frames Present frame + + Q VLC Motion Estimation IDCT Q -1 - DCT Coefficients Motion Vectors

13 MPEG2 Video Basics: Discrete Cosine Transform (DCT) Image Transform domain 8x8 coefficients Spatial domain 8x8 pixels 8 x 8 DCT 8 x 8 DCT Spatial domain 8x8 pixels Reconstructed Image uDCT is an orthogonal transformation u2-D DCT is separable in x and y dimensions uHas good energy compaction properties uClose to Karhunen-Loeve Transform (KLT), which is optimal but depends on image statistics. uEfficient hardware realization Theoretically lossless, but slightly lossy in practice due to round off errors Theoretically lossless, but slightly lossy in practice due to round off errors Source:Sarnoff Corporation HDTV/DTV Overview

14 MPEG2 Video Basics: Discrete Cosine Transform (DCT) pixels frequency coefficients 8x8 DCT lowhigh DC horizontal vertical Note: Transform values in this example are for illustration only. low high u8x8 pixel blocks transformed to 8x8 frequency coefficient blocks uApplied to intra-field blocks and motion-compensated (prediction error) blocks HDTV/DTV Overview Source:Sarnoff Corporation

15 MPEG2 Video Basics: Motion-compensated Prediction Current P or B PicturePrevious I or P Picture X F MV F Instead of sending quantized DCT coefficients of X, send: 1.quantized DCT coefficients of X-F (prediction error). If prediction is good, error will be near zero and will need few bits. 2.MV F, the motion vector. This will be differentially coded with respect to its neighboring vector, and will code efficiently. This will typically result in 50% - 80% savings in bits. Current Macroblock HDTV/DTV Overview

16 ATSC Formats HDTV/DTV Overview HD0 u18 formats: 6 HD, 12 SD 720 vertical lines and above considered High Definition720 vertical lines and above considered High Definition Choice of supported formats left voluntary due to disagreement between broadcasters and computer industryChoice of supported formats left voluntary due to disagreement between broadcasters and computer industry –Computer industry led by Microsoft wants exclusion of interlace and initially use of only those formats which leave bandwidth for data services - HD0 subset Different picture rates depending on motion content of applicationDifferent picture rates depending on motion content of application –24 frames/sec for film –30 frames/sec for news and live coverage –60 fields/sec, 60 frames/sec for sports and other fast action content u1920 x 60 frames/sec not included because it requires ~100:1 compression to fit in 19.3 Mb/s terrestrial channel, which cannot be done at high quality with MPEG2

17 Aspect Ratios :9 aspect ratio :3 aspect ratio HDTV/DTV Overview uTwo options: 16:9 and 4:3 u4:3 standard aspect ratio for US TV and computer monitors uHD formats are 16:9 better match with cinema aspect ratiobetter match with cinema aspect ratio better match for aspect ratio of human visual systembetter match for aspect ratio of human visual system better for some text/graphics tasksbetter for some text/graphics tasks –allows side-by-side viewing of 2 pages

18 Aspect Ratios HDTV/DTV Overview Full Zoom Full ZoomSqueeze 16 x 9 Display Modes4 x 3 Display Modes Squeeze Variable Expand Variable Shrink (j)(d) (b)(a) 4 3 (e) (f) (g) (i) (h) 16 9 (c) Video Transmission Format uAspect ratio conversion will be required 4:3 material on 16:9 monitor4:3 material on 16:9 monitor 16:9 material on 4:3 monitor16:9 material on 4:3 monitor uSeveral options (shown below)

19 Viewing Distance Versus Resolution Source: McLaughlin Consulting Group HDTV/DTV Overview V E R T I C A L I N E S PER P I C T U R E H T. MINIMUM VERTICAL LINES

20 Display Size uSDTV vs. HDTV SDTV is adequate for small size TVs ( 2 meters) viewing distancesSDTV is adequate for small size TVs ( 2 meters) viewing distances Current PC monitor definition offers excellent HDTV imaging at close viewing distances (<1 meter)Current PC monitor definition offers excellent HDTV imaging at close viewing distances (<1 meter) –However, it may not feel the same as a large screen display even though it subtends the same angle ? Major opportunity for HDTV is for big screens (>>30 inches) viewed at > 2 metersMajor opportunity for HDTV is for big screens (>>30 inches) viewed at > 2 meters uPC vs. TV Both SDTV and HDTV can be displayed on 19/21 PC monitorsBoth SDTV and HDTV can be displayed on 19/21 PC monitors Big screens TVs for family entertainmentBig screens TVs for family entertainment uThe widescreen requirement Major new requirement of DTV is widescreen formatMajor new requirement of DTV is widescreen format Requires widescreen home PC monitors and SDTVsRequires widescreen home PC monitors and SDTVs HDTV/DTV Overview

21 Interlace vs Progressive HDTV/DTV Overview Direct-view and projection CRT TVs typically use interlaced scanning, alternating between all odd lines and all even lines CRT monitors and Flat Panel Displays put lines up in consecutive order OddEven uReasons for interlacing in NTSC/PAL Conserves bandwidth & storageConserves bandwidth & storage Maintains frame rate & vertical resolutionMaintains frame rate & vertical resolution Minimizes line structureMinimizes line structure Odd & Even

22 Interlaced Vertical-Temporal Spectrum: I HDTV/DTV Overview Temporal Freq. (Hz) Spatial Freq. (cycles/picture height) I II III V A B C D E F uSpectrum of (NTSC) interlaced video: I is original content, II, III, IV, V are replicas caused by V-T sampling uInterlacing artifacts: line twitter/flicker, line crawl, feathering IV

23 Progressive Vertical-Temporal Spectrum: 525 Lines at 60P HDTV/DTV Overview Temporal Freq. (Hz) Spatial Freq. (cycles/picture height) I II III uSpectrum of (NTSC-like) progressive video: I is original content, II, III, IV are replicas caused by V-T sampling uAbsence of replica V avoids artifacts created by interlacing uUses 2X as much bandwidth as 60I IV

24 Addressability vs Resolution HDTV/DTV Overview uAddressability refers to number of pixels/lines that can be addressed uResolution is number of pixels (lines) that can be resolved Measured as line pairs or TV-linesMeasured as line pairs or TV-lines uResolution is usually less than addressability due to Bandwidth of channel and electronicsBandwidth of channel and electronics –cables, video amplifiers, etc Characteristics of reconstruction filter (display system)Characteristics of reconstruction filter (display system) –CRTs (horizontally): Gaussian spot –described by Modulation Transfer Function (MTF) –FPDs (and CRTs in vertical direction): spatially varying –this is why NTSC is considered to have ~330 lines of resolution even though there are 480 active lines. # active lines is derated by Kell factor of 0.7 –described by Multi-valued Modulation Transfer Function (MMTF) uMajor implications for design of optimal video display system

25 Interactivity & Data Services HDTV/DTV Overview uDTV bandwidth can be used for digital data Allows new data enhanced viewing modesAllows new data enhanced viewing modes –instant access to information such as player statistics, profiles of actors, etc. Simulated and actual interactivitySimulated and actual interactivity –real interactivity possible if platform has backchannel uSophisticated electronic programming guide needed to manage much greater choice created by multicast of SDTV streams HDTV channel can be used to send multiple audio/video streamHDTV channel can be used to send multiple audio/video stream –exact number depends on format and content. uInfrastructure for data services and interactivity lagging

26 Major Players HDTV/DTV Overview uContent providers StudiosStudios BroadcastersBroadcasters uHighway providers CableCable Direct Broadcast SatelliteDirect Broadcast Satellite BroadcastersBroadcasters uReceiver/Platform providers Consumer electronicsConsumer electronics ComputerComputer uTechnology providers EquipmentEquipment SemiconductorSemiconductor uSupervisors/regulators FCCFCC CongressCongress uConsumers

27 Distribution of US TV Viewers HDTV/DTV Overview Total households~ 100M~ M Total TV households~ 99M~ M Total Cable subscribers~ 65M~ 65-70M Total DBS subscribers~ 8M~ 13-20M Total Terrestrial only~ 25M~ 20-22M uCable dominates and will continue to do so ~ 2/3 of US viewers~ 2/3 of US viewers

28 Barriers to Rapid Deployment HDTV/DTV Overview uSource Infrastructure costsInfrastructure costs –New towers, transmitters, antennae Equipment costsEquipment costs –Large amount of NTSC equipment Operating costsOperating costs –Higher electricity bills –Greater programming costs - chicken & egg problem with viewers vs advertising revenues Existing archivesExisting archives –Huge existing archives of material will still need to be used

29 Barriers to Rapid Deployment HDTV/DTV Overview uChannel Approx 2/3 of US TV households get programming via cableApprox 2/3 of US TV households get programming via cable Cable BW is NOT freeCable BW is NOT free –Huge investments made by cable companies to increase bandwidth –More choice (of SD or 480i channels) and data services may offer better ROI than HD programming –No must carry rules yet uReceiver/Display Large high resolution displays are very expensiveLarge high resolution displays are very expensive New electronics is expensive and still evolvingNew electronics is expensive and still evolving Chicken & egg problemChicken & egg problem –volumes vs cost

30 Crossing the Barriers: Source uUpconversion of 480i to ATSC Huge NTSC archive and installed base of NTSC equipment can continue to be used by addition of Digital Format Translator (DFT) which upconverts 480i (NTSC, S-Video, D1, D2) to any ATSC HDTV format in real-timeHuge NTSC archive and installed base of NTSC equipment can continue to be used by addition of Digital Format Translator (DFT) which upconverts 480i (NTSC, S-Video, D1, D2) to any ATSC HDTV format in real-time Allows gradual introduction of HD equipment as volumes increase and costs dropAllows gradual introduction of HD equipment as volumes increase and costs drop Digital Format Translator ATSC formats 480i

31 Upconversion Affiliate Receiver & Decompressor HD MPEG2 Compressor Broadcast Affiliate Cable System TV Affiliate or Cable Operator Transmission Digital Format Translator Tape Archive or Disk Source Video Source Fiber Satellite Downlink Cable From Network Television Tower Network Switching Analog or CCIR601 HD MPEG2 Compressor Tape Archive or Disk Source Fiber Network Broadcast:Cable:Satellite Transmission Digital Format Translator Satellite Uplink To Affiliates Video Source u480i (NTSC, S-Video, D1, D2) to any ATSC HDTV format in real-time Crossing the Barriers: Source

32 Crossing the Barriers: Channel uCable adding significant capacity by upgrading to hybrid fiber/coax fiber from headend to nodefiber from headend to node coax from node to homescoax from node to homes uPremium channels/content might use full HD uChannel bandwidth can be conserved by combination of good down/up conversion Cable (and DBS/DSS) control both sides of channel that delivers content to the homeCable (and DBS/DSS) control both sides of channel that delivers content to the home Downconvert 480i or 480p Upconvert ATSC formats HDTV/DTV ATSC formats Headend or node Set-Top box inside home channel

33 Crossing the Barriers: Receiver/Display uReceiver and display currently separated in most offerings Enhanced DTVEnhanced DTV –addressability < 720 lines vertically –cost < $5000 –direct-view and rear projection –usually include line doubler (de-interlacer) –Hitachi, Samsung, Panasonic, and many others HDTV-capableHDTV-capable –full HD addressability –cost typically > $5000 –no HD receiver –HD input from external receiver, often via proprietary interface –mainly rear-projection, but some direct-view –Mitsubishi HD1080 Diamond Series with 4:3 and 16:9 options, Panasonic, Faroudja, Hitachi, Samsung, and many others HDTV-readyHDTV-ready –full HD addressability –includes HD receiver and possibly others (e.g., DirecTV) –mainly rear-projection but some direct view –Thomson, Sony, Toshiba, Hitachi, Samsung, and others

34 Receiver/Display Options Crossing the Barriers: Receiver/Display uDisplay options Direct-view CRT TVDirect-view CRT TV Rear-projection CRT TVRear-projection CRT TV Rear-projection LCDs & DMDsRear-projection LCDs & DMDs –Liquid-Crystal-On-Silicon (LCOS) devices could offer cheap high-def solution Front-projection LCDs & DMDsFront-projection LCDs & DMDs LCOS HeadsetsLCOS Headsets PlasmaPlasma Direct-view LCDDirect-view LCD CRT computer monitors17-21 CRT computer monitors –rapid decline in price + rapid increase in volumes uReceiver options Set-Top Box (STB)Set-Top Box (STB) –simplest option is simple decoding device similar to DSS/Cable STB –most popular option under development is low-cost multi-functional computer that can be used for gaming, DVD, digital VCR, interactivity, Internet surfing, etc PC-DTVPC-DTV –PC with low cost DTV receiver

35 Set-Top Box Crossing the Barriers: Receiver/Display uBasically a PC-like device Low cost: < 500$Low cost: < 500$ Multi-functionalMulti-functional –HDTV/DTV tuner, demux, decode, conversions –NTSC tuner, decode, upconversion –3D Games –DVD player –Interactivity & data services –Internet surfing –Digital VCR Open architectureOpen architecture –Not necessarily using Windows or x86 Leveraging PC components and approachLeveraging PC components and approach –PCI bus –Graphics and video components leveraged from PC –Software APIs to allow ISVs to offer enhanced services uDBS/DSS and Cable STBs pursuing similar direction

36 Set-Top Box: System View USB Peripherals (Scanners, Keyboards, Joysticks, Printers ) HD Digital Disk Recorder HD Digital Disk Recorder Amplifier MTS 100 StreamPlayer StreamPlayer Software Development Tools Application Control Program Telco Remote Control (or IRDA Peripherals) Composite Out Svideo Out R (R-Y) G (Y) B (B_Y) S Audio DTV NIM TV Tuner S/PDIF In S/PDIF Out SDI In SDI Out RS232 JTAG Tap Evaluation Modem USB/P1394 SmartcardIR/IRDA Reference TL850 CPU Source:TeraLogic, Inc. Crossing the Barriers: Receiver/Display

37 Set-Top Box: Structure and I/Fs Source: TeraLogic Inc. Cougar DTV Reference Platform HW Crossing the Barriers: Receiver/Display

38 Set-Top Box: SW Architecture Source: TeraLogic Inc. Cougar DTV Reference Platform SW Crossing the Barriers: Receiver/Display

39 DTV-STB Receiver Architecture DTV Decoder DTV Tuner Demodulator NTSC/ PAL Decod er Transport Stream CCIR601 SDRAM HD Video Out Audio Out Aux. Video Out CCIR601 Digital EPROM 1394 Link 1394 PHY Super I/O STB I/O PCI Bridge CPU FLASHSDRAM PCI Bus RS-232 Parallel USB IDE IR NTSC/PAL Encoder Descrambler/ CA sub system IIC SC PWM GPIO NTSC Crossing the Barriers: Receiver/Display

40 PC-DTV Platform Crossing the Barriers: Receiver/Display uNear-term solution add-in card with HDTV/NTSC tuner and demux/decoderadd-in card with HDTV/NTSC tuner and demux/decoder –offers HDTV/DTV viewing on conventional CRT computer monitor or HD monitor –enhanced services and interactivity possible through other PC HW/SW –low cost: likely < 300$ in 2H99 add-in card with HDTV/NTSC tuneradd-in card with HDTV/NTSC tuner –HW NTSC decode –SW HD demux and decode (with IDCT+Motion Compensation assistance from graphics accelerator - likely by 1H00). –very low cost possible: could be < $100 in 1H00 uLong-term solution PC-based Integrated Digital Media PlatformPC-based Integrated Digital Media Platform –Modular secure architecture based on compact enclosed receiver modules (Device Bay) with SW acting as bridge between receiver and renderer. –Big push by Microsoft in this direction

41 PC-DTV Add-in Card Source: TeraLogic Inc. Crossing the Barriers: Receiver/Display uAdd-in card option based on dual-input tuner and HW DTV decoder uCould be < $300 in 2H99

42 DTV Decoder IC Source: TeraLogic Inc. Crossing the Barriers: Receiver/Display uHighly integrated DTV decoder IC Comprehensive set of features: transport demux, MPEG2 decode, video processing, 2D graphics for GUI support, display processor, PCI I/FComprehensive set of features: transport demux, MPEG2 decode, video processing, 2D graphics for GUI support, display processor, PCI I/F uSuitable for STB or PC-DTV

43 Philips Coney PCI ATSC/NTSC Reference Design uLow cost add-in card option NTSC/ATSC reception with single tunerNTSC/ATSC reception with single tuner ATSC transport stream, scaled 656, and BTSC stereo audio sent out via PCIATSC transport stream, scaled 656, and BTSC stereo audio sent out via PCI Could be < $100 in high volumeCould be < $100 in high volume Crossing the Barriers: Receiver/Display

44 PC-DTV: HW/SW Partitioning Analog/dig tuner driver VSB demod driver TS demux AC3 decode DShowsound DShow video renderer Gfx driver Gfx hardware NTSC/CCapp/UI Tuner Analog TV demod Digital TV demod h/w assist PCIBridge Software Hardware DTVapp/UI video decode PCI Bridge WDM Crossing the Barriers: Receiver/Display uHW/SW partitioning for low cost Coney card option

45 Enhanced programming Video Audio Data Graphics chip/card On-chip MPEG acceleration 8VSB PCI Receiver Module AGPPCI1394 WDM driver PC motherboard and software 1394 Device Bay or external C.A. Receiver Module NTSC Analog (MPEG Encoding) Receiver Module TS split CS create CS store/retrieve CS split PCI MPEG decode support WDM driver Driver CableCable Crossing the Barriers: Receiver/Display PC-DTV: System View

46 PC-DTV: Long-term System Architecture Storage(Network) Terrestrial Cable Satellite ADSL Telco ???? DirectShow (value adding filters) Video display subsystem Audio subsystem Data subsystem MPEG Enc DVD Crossing the Barriers: Receiver/Display uReceiver functions separate from rendering functions All streams go through Microsoft DirectShow SW layerAll streams go through Microsoft DirectShow SW layer

47 PC-DTV: Long-term View Integrated Digital Media Platform (PC-Inside) Subsumes functionality of some or all of these Satellite TV receiver A/V receiver VCR DVD player Game console Cable box Atsc box Telco box PC inside Web browser Crossing the Barriers: Receiver/Display

48 Forecasts uDepends on whether PC-based DTV (or PC-like STB-based DTV) can provide quick ramp up in volume PC-DTV add-in cards for $99-$299 coupled with CRT monitors could provide significant early deployment to create the positive spiral needed for fast growthPC-DTV add-in cards for $99-$299 coupled with CRT monitors could provide significant early deployment to create the positive spiral needed for fast growth PC & CE industry will tryPC & CE industry will try –ultimately depends on consumer preferences uTraditional approach based on HDTV sets and vanilla HD receivers will be much slower Low cost interactive receivers Large installed base of eyeballs Effective advertising Better free programs Large volume receiver market Positive spiral

49 Summary uTransition to HDTV/DTV began with November 98 broadcasts Current status is 66 stations on air with full facilities, 25 with partialCurrent status is 66 stations on air with full facilities, 25 with partial uMany barriers to rapid deployment, but most can be overcome UpconversionUpconversion STB and PC DTV low cost receiver platformsSTB and PC DTV low cost receiver platforms –New functionality such as digital recording, interactive television, data services, at low cost could attract high volumes –PC/semiconductor industry price pressure could offer price-points as low as $99 (for lowest functionality option). Emerging display technologies such as LCOS, low cost large PC CRT monitors, and enhanced CRT SDTVs could provide high quality viewing options at reasonable cost.Emerging display technologies such as LCOS, low cost large PC CRT monitors, and enhanced CRT SDTVs could provide high quality viewing options at reasonable cost. uCould be a significant opportunity for enhanced TV uUltimately will depend on consumer preferences

50 Acknowledgements uSpeaker gratefully acknowledges material and/or information provided by Chuck McLaughlin, McLaughlin Consulting GroupChuck McLaughlin, McLaughlin Consulting Group Mark OBrien, TeraLogic, Inc.Mark OBrien, TeraLogic, Inc. Terry Smith, Sarnoff CorporationTerry Smith, Sarnoff Corporation Dave Marsh, Microsoft CorporationDave Marsh, Microsoft Corporation Mark Farley, S3 IncorporatedMark Farley, S3 Incorporated Glen Sakata, Broadcast Group, Faroudja LaboratoriesGlen Sakata, Broadcast Group, Faroudja Laboratories

51 References uHDTV/DTV HDTV Status and Prospects, B. Lechner, SID 1997 Seminar M-10.HDTV Status and Prospects, B. Lechner, SID 1997 Seminar M-10. –detailed history of development of HDTV The Impact of DTV on Television and Computer Displays, R. Cooke, C. McLaughlin, McLaughlin Consulting Group, December 1998The Impact of DTV on Television and Computer Displays, R. Cooke, C. McLaughlin, McLaughlin Consulting Group, December 1998 –provides in depth analysis of US market and a detailed product and technology forecast –www.mcgweb.com/reports/dtv.htm. Opportunities for Displays in the DTV Era, R. Cooke, C. McLaughlin, McLaughlin Consulting Group, April 1999Opportunities for Displays in the DTV Era, R. Cooke, C. McLaughlin, McLaughlin Consulting Group, April 1999 –abridged version, summarizes market trends and forecasts DTV rollout –www.mcgweb.com/reports/dtvopps.htm. –web site for Advanced Television Systems Committee –white papers on set-top box and PC implementations of DTV –presentations and white papers on PC-centric DTV –web site for FCC - up-to-date information on TV stations DTV transition

52 References uMPEG2 An Introduction to MPEG-2 B. Haskell, A. Puri, A. Netravali, Chapman & Hall, 1997An Introduction to MPEG-2 B. Haskell, A. Puri, A. Netravali, Chapman & Hall, 1997 uPC multimedia architecture Multimedia Accelerators, N. Balram, SID 1998 Seminar M-7.Multimedia Accelerators, N. Balram, SID 1998 Seminar M-7. Datasheets and data books from various multimedia accelerator companiesDatasheets and data books from various multimedia accelerator companies uImage/Video/Television Video Demystified: A Handbook for the Digital Engineer, K. Jack, HighText Publications, 1993.Video Demystified: A Handbook for the Digital Engineer, K. Jack, HighText Publications, Digital Television, C. P. Sandbank (editor), John Wiley & Sons, 1990.Digital Television, C. P. Sandbank (editor), John Wiley & Sons, High Quality Video De-interlacing, N. Balram, B. Herz, Windows Hardware Engineering Conference (WinHEC98), 1998.High Quality Video De-interlacing, N. Balram, B. Herz, Windows Hardware Engineering Conference (WinHEC98), Video Processing for Pixellized Displays, Y. Faroudja, N. Balram, Proceedings of SID International Symposium, May, 1999.Video Processing for Pixellized Displays, Y. Faroudja, N. Balram, Proceedings of SID International Symposium, May, Principles of Digital Image Synthesis, Vols 1 & 2, A. Glassner, Morgan Kaufmann Publishers, 1995.Principles of Digital Image Synthesis, Vols 1 & 2, A. Glassner, Morgan Kaufmann Publishers, 1995.


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