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All About HDTV TCF April 2008

Discover everything you need to know about HDTV, from digital TV and frequency allocation to different display types and how to hook up your system. Find out how to watch HDTV, where to find digital signals, and tips for recording HD programs. Don't miss out on the true HD experience!

mikegordon
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All About HDTV TCF April 2008

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  1. All About HDTVTCF April 2008

  2. They Look Great • 50” Vizio

  3. All About HDTV - Outline • Digital TV (DTV) and High Definition (HDTV) • Frequency Allocation • What are Broadcasters Doing • Where are the Signals Coming from • Plasma, LCD and DLP Displays • How to Hook Up HDTV to Your System • HD Recording • Consumer Guide

  4. Digital TV and HDTV • OTA Analog transmissions to cease in 2009 after over 50 years. DTV offers better picture quality – no snowy or degraded picture, no convergence problems • Each pixel separately generated • Stereo and surround sound (5.1) built-in • MPEG-2 compresses 1 Gb/s video stream • One 6 MHz Channel can carry 20 Mbits/sec or several DTV (HDTV and SDTV) sub channels and other data (8-VSB and QAM)

  5. Digital TV and HDTV(cont.) DTV Formats – 480i, 576i, 720p, 1080i, 1080p (1080p Blue-Ray, HD-DVD only) • Native HDTV Formats - 720p or 1080i, up or down conversion is required • Aspect Ratios – 4:3, 16:9 – black stripes, missing foreheads or 300 lbs bodies • On-Screen Daily Schedules

  6. 2008 TV Receivers • Sets with HD display and no tuners (HD ready or HD monitor) • Sets with HD display, NTSC/ATSC and QAM tuners with or without cable cards (most common) • Sets with SD display (LCD or CRT) and NTSC/ATSC tuner (least expensive)

  7. Frequency Allocation • Old Assignments: VHF (Ch. 2-13) and UHF (Ch. 14-68) • New Assignments: Upper VHF, lower UHF (Ch. 7-53) • Government Will Auction the Vacated Channels for $$ Billions, is issuing rebate coupons for converter boxes

  8. What are Broadcasters Doing • Broadcasters take advantage of uninformed public • Saving on Quality for Profits – more channels, less HD • Few Broadcasters provide a consistent true HD Signal • Basic Cable May or May not Include Digital Channels • Cable and satellite providers degrade the HD signal by further compressing it • Over-the-air still the best – not publicized and hushed up by cable providers and retailers

  9. Transmission and Modulation NTSC/ATSC/QAM Tuners QAM (Cable) 6 MHz + Video Stream 1 Gbit/sec MPEG-2 20 Mbits/sec 8-VSB (OTA) 6 MHz

  10. Digital Transmission • 6 MHz Channel

  11. Are You Watching HDTV? • Sleeping in the Garage Doesn't Make You a Car • Nearly half of the 24 million households with HDTVs don't actually watch high-definition programs • HDTV Material Doesn't Grow on Trees

  12. Where are the Digital Signals Coming from • Digital Cable • Satellite (Dish Network) • Over the Air – A well kept secret. An old antenna, even rabbit ears will often do • Blue Ray DVDs and other new formats

  13. Plasma, LCD and DLP Displays • Plasma – Generates its own light, vivid colors, best viewing angle, but subject to burn-in, ambient light a problem (glare, reflections) • LCD – Backlit, (Venetian blinds) good pastel colors, poor blacks, low power consumption, low weight, good in lighted areas, 42” or less • DLP – Reflected light (Rear projection), bright colors, relatively expensive, fragile, 50” and up, • www.howstuffworks.com/lcd2.htm

  14. Plasma Display • Panel Cross Section

  15. Plasma Display • Cell arrangement

  16. LCD Display • Polarization

  17. LCD Display • More Details

  18. DLP (Projection) Display • How it works

  19. How to Hook Up HDTV to Your System (A/V Components) • Over-the-air and cable combination • Analog vs. digital cable (cable cards, boxes) • Use of additional tuners (VCR, ATSC) • Analog and digital audio to your HiFi • Use with Laptop as Monitor • DVD Player • Games, computer and other components

  20. How to Hook Up HDTV to Your System (Inputs and Outputs) • Varies between Manufacturers and Models • Composite - AVI (3 RCA cables) • Component (5 RCA cables) • HDMI • Svideo + audio • RGB (15 pins) + audio • Analog Audio (Stereo) • Digital Audio (5.1)

  21. How to Hook Up HDTV to Your System (Cable Types) • HDMI, RCA, Svideo, RGB

  22. How to Hook Up HDTV to Your System (OTA and Analog Cable) • Combining Over-the –air with analog cable HDTV Cable VCR AV1 Antenna DTV/TV

  23. Recording of HD/SD Programs • Lack of video outputs on most HDTV sets makes recording difficult (DRM raises its ugly head) • Recording to PC hard drive with external ATSC tuner • Regular VCR if analog output available from HDTV or digital cable box • TiVo recording to hard drive • DVRs with built-in ATSC/QAM tuners and DVD recording media coming down in price

  24. Pinnacle PCTV HD Stick .

  25. HD Picture on PC Screen • .

  26. Current HD/SD Programming • Networks simulcast their main analog channel • Plenty of weather channels • News, sports, specials and some shows in HD • PBS carries a separate HD channel with high quality documentaries, cultural and science programs (3 hour operas from the MET, full concerts, etc)

  27. Government Coupon Program • Analog OTA transmission will cease on 2/17/2009 • Between 1/1/08 and 3/31/09 you can call 1-888-388-2009 to apply • 1-2 $40 Rebate coupons per household • Coupons expire 90 days after issue • ATSC to analog converters will give new life to old TVs and VCRs

  28. Consumer Guide • Fit Size to Your Viewing Area • Built-in ATSC/QAM tuner or HD-Ready • Plasma. LCD or DLP • Availability of Inputs and Outputs • Price, warranties, repair cost • Ask questions on alt.tv.tech.hdtv and check http://www.avsforum.com

  29. Additional Resources • Converter box site: www.dtv2009.gov: • Find out about OTA reception at your home: www.antennaweb.org • Quiz to tell if you are ready for HDTV: www.dtvtransition.org:

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