All About HDTV

Embed Size (px)

Citation preview

  • 8/8/2019 All About HDTV

    1/29

    1

    All About HDTV

    TCF April 2008

  • 8/8/2019 All About HDTV

    2/29

    They Look Great 50 Vizio

  • 8/8/2019 All About HDTV

    3/29

    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

  • 8/8/2019 All About HDTV

    4/29

    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, noconvergence 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 channelsand other data (8-VSB and QAM)

  • 8/8/2019 All About HDTV

    5/29

  • 8/8/2019 All About HDTV

    6/29

    2008 TV Receivers Sets with HD display and no tuners (HD

    ready or HD monitor)

    Sets with HD display, NTSC/ATSC andQAM tuners with or without cable cards(most common)

    Sets with SD display (LCD or CRT) andNTSC/ATSC tuner (least expensive)

  • 8/8/2019 All About HDTV

    7/29

    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 rebatecoupons for converter boxes

  • 8/8/2019 All About HDTV

    8/29

    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 HDSignal

    Basic Cable May or May not Include DigitalChannels

    Cable and satellite providers degrade the HDsignal by further compressing it

    Over-the-air still the best not publicized and

  • 8/8/2019 All About HDTV

    9/29

    Transmission and ModulationNTSC/ATSC/QAM Tuners

    Video Stream

    1 Gbit/sec

    +

    MPEG-2

    20 Mbits/sec

    QAM(Cable)

    6 MHz

    8-VSB (OTA)

    6 MHz

  • 8/8/2019 All About HDTV

    10/29

    Digital Transmission 6 MHz Channel

  • 8/8/2019 All About HDTV

    11/29

    11

    Are You Watching HDTV? Sleeping in the Garage Doesn't Make You

    a Car

    Nearly half of the 24 million householdswith HDTVs don't actually watch high-definition programs

    HDTV Material Doesn't Grow on Trees

  • 8/8/2019 All About HDTV

    12/29

    12

    Where are the Digital Signals

    Coming from Digital Cable

    Satellite (Dish Network)

    Over the Air A well kept secret. An oldantenna, even rabbit ears will often do

    Blue Ray DVDs and other new formats

  • 8/8/2019 All About HDTV

    13/29

    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, lowweight, good in lighted areas, 42 or less

    DLP Reflected light (Rear projection), brightcolors, relatively expensive, fragile, 50 and up,

    www.howstuffworks.com/lcd2.htm

  • 8/8/2019 All About HDTV

    14/29

    14

    Plasma Display

    Panel Cross Section

  • 8/8/2019 All About HDTV

    15/29

    15

    Plasma Display

    Cell arrangement

  • 8/8/2019 All About HDTV

    16/29

  • 8/8/2019 All About HDTV

    17/29

    17

    LCD Display

    More Details

  • 8/8/2019 All About HDTV

    18/29

    18

    DLP (Projection) Display

    How it works

  • 8/8/2019 All About HDTV

    19/29

    19

    How to Hook Up HDTV to YourSystem (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

  • 8/8/2019 All About HDTV

    20/29

    20

    How to Hook Up HDTV to YourSystem (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)

  • 8/8/2019 All About HDTV

    21/29

  • 8/8/2019 All About HDTV

    22/29

    22

    How to Hook Up HDTV to YourSystem (OTA and Analog Cable)

    Combining Over-the air with analog cable

    VCR

    HDTV

    Antenna

    Cable AV1

    DTV/TV

  • 8/8/2019 All About HDTV

    23/29

    23

    Recording of HD/SD Programs

    Lack of video outputs on most HDTV setsmakes recording difficult (DRM raises its uglyhead)

    Recording to PC hard drive with external ATSCtuner

    Regular VCR if analog output available fromHDTV or digital cable box

    TiVo recording to hard drive

    DVRs with built-in ATSC/QAM tuners and DVDrecording media coming down in price

  • 8/8/2019 All About HDTV

    24/29

    Pinnacle PCTV HD Stick

    .

  • 8/8/2019 All About HDTV

    25/29

    HD Picture on PC Screen

    .

  • 8/8/2019 All About HDTV

    26/29

    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 highquality documentaries, cultural and scienceprograms (3 hour operas from the MET, fullconcerts, etc)

  • 8/8/2019 All About HDTV

    27/29

    Government Coupon Program

    Analog OTA transmission will cease on2/17/2009

    Between 1/1/08 and 3/31/09 you can call1-888-388-2009 to apply

    1-2 $40 Rebate coupons per household

    Coupons expire 90 days after issueATSC to analog converters will give new

    life to old TVs and VCRs

  • 8/8/2019 All About HDTV

    28/29

    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 andcheck http://www.avsforum.com

  • 8/8/2019 All About HDTV

    29/29

    Additional Resources

    Converter box site:www.dtv2009.gov:

    Find out about OTA reception at yourhome:www.antennaweb.org

    Quiz to tell if you are ready for HDTV:www.dtvtransition.org: