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Digital Television

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... four teams agree to share patent royalties and combine ... Photographic Picture. Wide-Screen Like Movies. Discrete Surround Sound. Digital Television ... – PowerPoint PPT presentation

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Title: Digital Television


1
Digital Television Home Theater
  • Audio for Video
  • Basic Acoustics
  • How Why We Hear
  • Movie Home Theater Sound-System Configurations,
    Including Surround Sound
  • Digital Audio Formats the Good, the Bad, and the
    Sublime.

2
Sound Basics What Is Sound?
  • Sound Traveling Waves Of Air Pressure
  • Air Pressure Wave Localized, Temporary,
    Sequential Increase Decrease in Air Pressure
    Around Normal (15 lbs./sq. inch)
  • Each Wave Must Have Both A Positive (pressure
    increase) And Negative (pressure decrease) Part
  • Overall Air Pressure Cannot Change
  • Think Of Air Molecules Temporarily Bunching Up In
    Some Places and Spreading Out In Others. The
    Bunching Up Spreads Like Falling Dominos

3
From William Vennard Singing The Mechanism The
Technique
4
Sound Basics Frequency
  • A Sequential Increase Decrease In Pressure Is
    Called A Cycle.
  • Think of It As A Single Wavelet.
  • A Cycle Takes A Finite Time To Complete
  • Pressure Variation Goes 0 0 - 0, or 0 - 0 0
  • Sustained Sounds With Repetitive Identical Cycles
    Have An Associated Fundamental Frequency, F
  • F The Number Of Cycles Occurring Within A
    Second Of Time
  • Expressed in Hz. Cycles/Second

5
Sound Basics Auditory Perception
  • When Sustained Sounds With Repetitive Air
    Pressure Waves Are Perceived By The Ear, They
    Give The Sensations Of Pitch Loudness
  • More Cycles In A Given Span Of Time Higher
    Pitched Sound
  • The Greater The Increase Decrease In Air
    Pressure Variation Within Each Cycle The Louder
    The Sound

6
Sound Basics Hearing Range
  • Pitch Is Perceived Logarithmically In Octaves
  • One Octave Increase Doubling The Frequency
  • Human Hearing Covers 10 Octaves, From 20
    Cycles/Second to 20,000 Cycles/Second
  • Everyday Sounds Are Usually 40 Cycles/Second to
    12,000 Cycles/Second
  • The Critical Band For Speech Recognition is 500
    Cycles/Second to 2,000 Cycles/Second

7
Sound Basics Wavelength
  • Air Pressure Waves Travel 1,130 ft./sec.
  • A Cycle Of Air Pressure Variation That Takes A
    Finite Time To Complete Therefore Spreads Out
    Across a Finite Distance Its Wavelength
  • Sustained Sound With Repetitive Identical Cycles
    Having Fundamental Frequency F, Have Wavelength L
    Derived By
  • L Ft./Cycle 1.13 Ft./Millisecond / F
    Cycles/Second
  • Note That The Higher The Frequency ( Pitch), The
    shorter The Wavelength

8
(No Transcript)
9
Resonation Perception
  • Several Air Pressure Waves Simultaneously
    Traveling Through The Same Space Will Add
    Together Linearly.
  • So Will Traveling Air Pressure Waves When Trapped
    Between Two Physical Parallel Boundaries.
  • At Each Boundary Some Sound Passes Through But
    Most Bounces In The Reverse Direction
  • The Waves Will Continue To Bounce Back And Forth
    Between Boundaries Until All The Sound Has Leaked
    Out.
  • Sustained Sounds Will Continually Feed New Air
    Pressure Waves To Bounce And Add Together Between
    The Boundaries

10
Sound(Air Pressure)- Waves Trapped Between
Parallel Walls Of A Resonator
Sound Leakage
11
Resonation Perception
  • For Most Frequencies, Multiple Bouncing Pressure
    Waves Will
  • Momentarily Reinforce Each Other Some Places
  • Momentarily Oppose Each Other At Other Places
  • But With No Consistent Pattern.

12
Resonation Perception
  • However, At A Few Frequencies Bouncing Pressure
    Waves Will Constantly Reinforce Each Other And
    Always At The Same Places
  • These Places Of Constantly Reinforcing Pressure
    Waves Are Called Standing Waves.
  • As Standing Waves Build In Intensity With
    Sustained Sound, More Sound Leaks Through The
    Boundaries To The Outside Until Equilibrium Is
    Reached.

13
1
2
Long-Term Average
3
Standing Waves
14
Resonation Perception
  • Which Frequencies Will Produce Standing Waves?
  • Only Those For Which The Distance Between
    Boundaries Is An Integer Multiple Of The
    Frequencys Wavelength
  • I. E. When 1, 2, 3, 4, ... Wavelengths Will
    Perfectly Fit Between The Boundaries With No
    Pieces Left Over.

15
Resonation Perception
  • Parallel Physical Boundaries Therefore Act As A
    Resonator Filter. Put Sustained Broadband
    Noise In (Which Contains Many Frequencies)
  • Most Frequencies Will Be Attenuated.
  • A Few Will Be Strengthened and Projected.
  • The Frequencies That Are Strongly Resonated
    Reveal The Dimensions Of The Resonator.

16
Resonation Perception
  • Real-World Hollow Objects Are 3-Dimensional
    Have Many Non-Parallel Boundaries
  • Standing Waves Occur At Many More Frequencies And
    Vary In Strength.
  • Putting In Sustained Broadband Noise Will Result
    In Highly Unique And Complex Spectrum Of
    Resonated Frequencies A Spectral Fingerprint Of
    The Physical Object!
  • Strong Survival Value In Discriminating How
    Strongly Each Frequency (Out Of A Broad Range Of
    Frequencies) Is Being Reinforced By An Object.

17
Resonation Perception
  • Our Ears Are Spectrum Analysers
  • Inner Ears Compare Strengths Of Different
    Frequencies Coming From A Single Object.
  • We Can Associate Sounds We Hear With Objects We
    See, Even When We Cant See Them!
  • Our Ears Report To Our Brains, Which Is Not Aware
    Of Separate Frequencies, But Instead Perceives
    Timbre - An Overall Sound Quality.

18
From William Vennard Singing The Mechanism The
Technique
19
From Ralph Appleman The Science Of Vocal Pedagogy
20
The Purpose of Hearing
  • Scout Out Our Environment (for Predators and
    Food) Beyond Our Line Of Sight.
  • What is out there?!
  • Is It Moving Closer Or Further Away?!
  • Where Is It?!

21
How We Hear
  • What Is Out There?
  • Spectral analysis with either/both ears.
    (Previously explained)

22
How We Hear
  • What Is Out There?
  • Spectral analysis with either/both ears.
    (Previously explained.)
  • Is It Moving Closer Or Further Away?
  • Changes in volume with either/both ears. (Inverse
    Square Law.)

23
How We Hear
  • Where Is It ?
  • Bianural Hearing Comparing the same sound as
    heard by two physically separate, distinctly
    shaped ears
  • Relative Loudness
  • Time Of Arrival
  • Head-Related Transfer Function

24
How We Hear
  • Where Is It ?
  • Two Separate Perceptions of Environmental Sound
  • Localization - I can point to the direction of
    the sound (e.g a lions roar)
  • Envelopment - I am inside the sound (e.g. rain
    thunder)

25
How We Localize Sound
26
How We Localize Sound
27
How We Localize Sound
28
How We Localize Sound
29
How We Localize Sound
30
How We Localize Sound
Whats The Difference? Head-Related Transfer
Function
31
Hi Fidelity/Home Theater Audio
  • To Simulate Nature It Must Reproduce
  • Realistic Complex Acoustic Spectrum
  • Accurate Full-Range Speakers
  • High-End Electronics
  • Realistic Volume Levels/Volume Changes
  • Sufficient Power and Speaker Sensitivity
  • Accurate, Clean Micro and Macro Dynamics
  • Realistic Binaural Cues via Multiple Speakers
  • Relative Loudness
  • Time Of Arrival
  • Head-Related Transfer Function

32
Hi Fidelity/Home Theater Audio
  • Monophonic Sound
  • All sound sources sonically image at the speaker.

33
Hi Fidelity/Home Theater Audio
  • 2-Channel Stereophonic Sound
  • Sound sources sonically phantom-image between and
    behind the speakers.
  • Can have multiple simultaneous sonic phantom
    images.
  • Can smoothly pan a sonic phantom image.
  • 2 Discrete Channels

34
Hi Fidelity/Home Theater Audio
  • Quadraphonic Sound
  • Sound sources sonically phantom-image between the
    front speakers, between the back speakers, but
    not between the side speakers.
  • 4 -gt 2 Matrixed Channels and barely feasible
    Discrete

35
Hi Fidelity/Home Theater Audio
  • Matrixed 4 Channels into 2
  • 2 Channels Lt Rt provide
  • Left Channel Lt
  • Right Channel Rt
  • Channel 3 Lt Rt
  • Channel 4 Lt - Rt
  • Just 3 db Channel Isolation due to Inter-channel
    Bleeding.
  • Steering Logic Can Isolate Channels Further, But
    for Only One Phantom Image at a Time

36
Hi Fidelity/Home Theater Audio
  • Dolby Stereo (Theaters) Thanks, Star Wars Episode
    4
  • Left/Center/Right Speakers Behind Screen Single
    Surround Channel into Many Speakers for
    Envelopment
  • 4 -gt 2 Matrixed Channels. Delayed,
    Frequency-Limited Surround Channel

37
Hi Fidelity/Home Theater Audio
  • Dolby Pro Logic (Home)
  • Left/Center/Right w. Center Above/Below the
    Display Single Surround Channel into 2 Dipolar
    Speakers for Envelopment
  • 4 -gt 2 Matrixed Channels. Delayed,
    Frequency-Limited Surround Channel

38
Hi Fidelity/Home Theater Audio
  • Digital 5.1 in Theaters
  • Left/Center/Right Speakers Behind Screen Left
    Sur/Right Sur Subwoofer
  • Discrete 5 Full-Range Channels Discrete
    Subwoofer

39
Hi Fidelity/Home Theater Audio
  • Digital 5.1 Home Configuration
  • Left/Center/Right w. Center Above/Below the
    Display Left Sur/Right Sur Subwoofer

-30o 0o 30o
-120o 120o
  • Discrete 5 Full-Range Channels Discrete
    Subwoofer

40
Hi Fidelity/Home Theater Audio
  • Digital 6.1 in Theaters Thanks, Star Wars Episode
    1
  • Left/Center/Right Behind Screen Left Sur/Back
    Sur/ Right Sur Subwoofer
  • 5 Channels Discrete Subwoofer Back Channel
    Matrixed

41
Hi Fidelity/Home Theater Audio
  • Digital 7.1 Home Configuration
  • Left/Center/Right w. Center Above/Below the
    Display Left Sur/Left Back/Right Back/Right Sur
    Sub

-30o 0o 30o
-90o 90o
-150o 150o
  • Discrete 7 Full-Range Channels Discrete
    Subwoofer

42
Digital Television
43
Digital Television
  • Its Coming February 17, 2009. Do you know where
    your programs are?

44
Digital Television
  • What Is It?
  • A Totally New Television System

45
Digital Television
  • What was wrong with the old Analog system?

46
Digital Television
  • What was wrong with the old Analog system?
  • 1930s Technology

47
Digital Television
  • What was wrong with the old Analog system?
  • 1930s Technology
  • Black White

48
Digital Television
  • What was wrong with the old Analog system?
  • 1930s Technology
  • Black White
  • Monophonic Sound

49
Digital Television
  • What was wrong with the old Analog system?
  • 1930s Technology
  • Black White
  • Monophonic Sound
  • Maximum Screen Size 19 inches

50
Digital Television
  • What was wrong with the old Analog system?
  • 1930s Technology
  • Black White
  • Monophonic Sound
  • Maximum Screen Size 19 inches
  • Kluged Retrofits Still not close to
    photographic and larger-than-life quality of
    movies.

51
Digital Television
  • Why Now? Actually it started in the 1980s

52
Digital Television
  • Why Now? Actually it started in the 1980s.
  • Japanese Developed Analogue High Definition TV
    Began Marketing It in the US.

53
Digital Television
  • Why Now? Actually it started in the 1980s.
  • Japanese Developed Analogue High Definition TV
    Began Marketing It in the US.
  • Congress Feared Further Technology Patent Drain

54
Digital Television
  • Why Now? Actually it started in the 1980s.
  • Congress asked American companies to develop a
    more/better American System
  • Offered no government funding but instead enticed
    with opportunities for patent royalties.
  • Would conduct fly-off of all submitted systems.
  • 4 teams of companies entered the competition.

55
Digital Television
  • Why Now? Then Why Did It Take So Long To
    Develop?
  • Broadcasters insisted on being included i.e. the
    high definition system would have to fit within
    current licensed stations (6 MHz
    Bandwidth/Channel).
  • The Japanese system had required higher bandwidth
    cable and satellite distribution.

56
Digital Television
  • Why Now? Then Why Did It Take So Long To
    Develop?
  • Broadcasters insisted on being included i.e. the
    high definition system would have to fit within
    current licensed stations (6 MHz
    Bandwidth/Channel).
  • The Japanese system had required higher bandwidth
    cable and satellite distribution.
  • FCC conducted not one, but three flyoffs over 10
    years and found no system satisfactory.

57
Digital Television
  • Why Now? Then Why Did It Take So Long To
    Develop?
  • Broadcasters insisted on being included i.e. the
    high definition system would have to fit within
    current licensed stations (6 MHz
    Bandwidth/Channel).
  • The Japanese system had required higher bandwidth
    cable and satellite distribution.
  • FCC conducted not one, but three flyoffs over 10
    years and found no system satisfactory.
  • During the third flyoff, one team proposed a
    digital system which showed promise.

58
Digital Television
  • Why Now? Then Why Did It Take So Long To
    Develop?
  • The four competing teams of companies and
    research institutions were about to drop out of
    the development over 10 years of IRD with no
    return in sight.

59
Digital Television
  • Why Now? Then Why Did It Take So Long To
    Develop?
  • The four competing teams of companies and
    research institutions were about to drop out of
    the development over 10 years of IRD with no
    return in sight.
  • The FCC suggested that the four teams agree to
    share patent royalties and combine efforts to use
    the best of all proposed systems.

60
Digital Television
  • Why Now? Then Why Did It Take So Long To
    Develop?
  • The four competing teams of companies and
    research institutions were about to drop out of
    the development over 10 years of IRD with no
    return in sight.
  • The FCC suggested that the four teams agree to
    share patent royalties and combine efforts to use
    the best of all proposed systems
  • This Grand Alliance completed development of the
    current ATSC system in the mid 1990s and the
    FCC adopted it in 1997.

61
Digital Television
  • What Is Better About Our New ATSC Television
    System?

62
Digital Television
  • What Is Better About Our New ATSC Television
    System?
  • Needs Fewer Channels

63
Digital Television
  • What Is Better About Our New ATSC Television
    System?
  • Needs Fewer Channels
  • Versatile Content

64
Digital Television
  • What Is Better About Our New ATSC Television
    System?
  • Needs Fewer Channels
  • Versatile Content
  • HDTV Options
  • Photographic Picture
  • Wide-Screen Like Movies
  • Discrete Surround Sound

65
Digital Television
  • Picture Quality
  • Much Higher Resolution 1 or 2 million pixels
    versus 230,000 for analogue broadcast or 345,000
    for DVD

66
Digital Television
  • Picture Quality
  • Much Higher Resolution 1 or 2 million pixels
    versus 230,000 for analogue broadcast or 345,000
    for DVD
  • Wider Color Gamut - More Saturated Colors

67
Digital Television
  • Picture Quality
  • Much Higher Resolution 1 or 2 million pixels
    versus 230,000 for analogue broadcast or 345,000
    for DVD
  • Wider Color Gamut - More Saturated Colors
  • Wider Color Gamut - Many More Hues

68
Digital Television
  • Picture Quality
  • Much Higher Resolution 1 or 2 million pixels
    versus 230,000 for analogue broadcast or 345,000
    for DVD
  • Wider Color Gamut - More Saturated Colors
  • Wider Color Gamut - Many More Hues
  • Better Color Spatial Resolution - Patterned
    Versus Pastel Shirts

69
Digital Television
  • Wide-Screen Aspect Ratio
  • Resolution 4 Hor. X 4 Vert. 16 Pixels
  • Aspect Ratio 44 or 1.0 to 1.0

70
Digital Television
  • Academy Aspect Ratio
  • Resolution 4 Hor. X 3 Vert. 12 Pixels
  • Aspect Ratio 43 or 1.331.0
  • Analogue TV Has Theoretical 640 Hor. X 480 Vert.
    Aspect Ratio 1.331.0

71
Digital Television
  • Wide Aspect Ratio
  • Typical Movie Aspect Ratios - 1.331.0
    (Edison),1.661.0, 1.851.0, 2.051.0, 2.351.0
  • How can HDTV accommodate all these aspect ratios?
    Take the geometric mean - 1.781.0
  • Actual Pixel Counts
  • 1280 X 720 1 Megapixel Refreshed 60
    Times/Sec.
  • 1920 X 1080 2 Megapixels Refreshed 30
    Times/Sec.

72
Digital Television
  • 3. 5.1 Dolby Digital Surround
  • Left Front, Center Front, Right Front, Left
    Surround, Right Surround, Subwoofer
  • Also Carries Regular Stereo For TV Speakers

73
Digital Television
  • What Happens To My Old TVs When Analogue TV Is
    Turned Off on Feb 17, 2009?
  • Will need a converter box
  • Satellite receiver
  • Cable Box
  • Over-The-Air Box
  • Picture will still be standard definition on old
    TV, and will be letterboxed to accommodate
    wide-screen programs (or else 1. the sides of the
    picture will be cut off or 2. everyone will look
    really thin!)

74
Digital Television
  • The Coupon Progam
  • Nielson estimates 14.3 million US households rely
    on over-the-air TV. Thats 12 of the nations
    households.
  • Each household can apply for up to 2 40. coupons
    to spend on ATSC digital tuner boxes for analog
    TVs.
  • Congress has allotted 1.5 B for the program to
    be administered via the National
    Telecommunications and Information
    Administration. 33.5 Million Coupons.
  • Boxes sell for 50. - 70. 250 major retailers
    have been approved to sell them.
  • Boxes only have Composite or Coax connector, no
    S-Video or Component only output standard
    definition.
  • 13 million coupons distributed so far.
  • http//www.ntia.doc.gov/dtvcoupon/

75
Digital Television
  • What do I need to know to buy a new HDTV? Must
    have
  • ATSC Tuner

76
Digital Television
  • What do I need to know to buy a new HDTV? Must
    have
  • ATSC Tuner (Over The Air)
  • QAM Tuner (Basic Cable)

77
Digital Television
  • What do I need to know to buy a new HDTV? Must
    have
  • ATSC Tuner (Over The Air)
  • QAM Tuner (Basic Cable)
  • Pixel Count At Least 1280 X 720 (720p)

78
Digital Television
  • What do I need to know to buy a new HDTV? Must
    have
  • ATSC Tuner (Over The Air)
  • QAM Tuner (Basic Cable)
  • Pixel Count At Least 1280 X 720 (720p)
  • Diagonal Size 1/2 Viewing Distance

79
Digital Television
  • What do I need to know to buy a new HDTV? Nice
    to have
  • HDMI Hookup (Still Has Bugs)

80
Digital Television
  • What do I need to know to buy a new HDTV? Nice
    to have
  • HDMI Hookup (Still Has Bugs)
  • Cable Card

81
Digital Television
  • What do I need to know to buy a new HDTV? Nice
    to have
  • HDMI Hookup (Still Has Bugs)
  • Cable Card
  • Pixel Count 1920 X 1080 (1080I or 1080P)

82
Digital Television
  • What do I need to know to buy a new HDTV? Nice
    to have
  • HDMI Hookup (Still Has Bugs)
  • Cable Card
  • Pixel Count 1920 X 1080 (1080I or 1080P)
  • 120 Hz Refresh
  • Eliminates Image Persistence Judder

83
Digital Television
  • What do I need to know to buy a new HDTV? Nice
    to have
  • HDMI Hookup (Still Has Bugs)
  • Cable Card
  • Pixel Count 1920 X 1080 (1080I or 1080P)
  • 120 Hz Refresh
  • Eliminates Image Persistence Judder
  • 3D Ready

84
Digital Television
  • What do I need to know to buy a new HDTV? Nice
    to have
  • HDMI Hookup (Still Has Bugs)
  • Cable Card
  • Pixel Count 1920 X 1080 (1080I or 1080P)
  • 120 Hz Refresh
  • Eliminates Image Persistence Judder
  • 3D Ready
  • More Color Ready
  • Deep Color (10-14 bits/Primary)
  • xvYCC Extended Color (LED, Laser Illumination)

85
Digital Television
  • What Do I Need To Know To Buy A New TV? How Do I
    Judge Picture Performance?
  • Brightness (Red Herring - only relevant for very
    bright rooms)

86
Digital Television
  • What Do I Need To Know To Buy A New TV? How Do I
    Judge Picture Performance?
  • Brightness (Red Herring - only relevant for very
    bright rooms)
  • Color Accuracy Do they look natural?

87
Digital Television
  • What Do I Need To Know To Buy A New TV? How Do I
    Judge Picture Performance?
  • Brightness (Red Herring - only relevant for very
    bright rooms)
  • Color Accuracy Do they look natural?
  • Shadow Detail

88
Digital Television
  • What Do I Need To Know To Buy A New TV? How Do I
    Judge Picture Performance?
  • Brightness (Red Herring - only relevant for very
    bright rooms)
  • Color Accuracy Do they look natural?
  • Shadow Detail
  • Instantaneous Contrast

89
Digital Television
  • What Do I Need To Know To Buy A New TV? How Do I
    Judge Picture Performance?
  • Brightness (Red Herring - only relevant for very
    bright rooms)
  • Color Accuracy Do they look natural?
  • Shadow Detail
  • Instantaneous Contrast
  • Motion Persistence?

90
Digital Television
  • What Do I Need To Know To Buy A New TV? How Do I
    Judge Picture Performance?
  • Brightness (Red Herring - only relevant for very
    bright rooms)
  • Color Accuracy Do they look natural?
  • Shadow Detail
  • Instantaneous Contrast
  • Motion Persistence?
  • Contouring?

91
Digital Television
  • What Do I Need To Know To Buy A New TV? How Do I
    Judge Picture Performance?
  • Brightness (Red Herring - only relevant for very
    bright rooms)
  • Color Accuracy Do they look natural?
  • Shadow Detail
  • Instantaneous Contrast
  • Motion Persistence?
  • Contouring?
  • Off Axis Viewing (Depends on seating).
  • Brightness Diminishes
  • Colors Change

92
Digital Television
  • What Type Of HDTV Format Should I Buy?
  • Rear Projection - Best Value even though
    disappearing.
  • New models are no deeper than Flat Panels on
    their stands.
  • Still best for screen sizes 60
  • Front Projection - Best to Suspend Disbelief
  • Flat Panel Lifestyle Choice, Lifestyle Cost.
    Vary Greatly in Picture Quality.

93
Digital Television
  • What Type Of HDTV Technology Should I Buy?
  • Alphabet Soup, But You Need to Know
  • 3LCD Front Projectors and Rear Projection Sets
  • Screen Door Effect - Acceptable Pixel Fill
  • Mediocre Contrast - but gradually improving
  • Mediocre Blacks - but gradually improving
  • Mediocre Off Axis Viewing (Rear Projection)
  • Good Brightness
  • Brightness Ages Some, but Restores w. New Bulb
  • Bulb Life 2000 - 4000 Hours. Cost 300. - 400.
  • Cheapest Projectors and Projection Sets

94
Digital Television
  • What Type Of HDTV Technology Should I Buy?
  • Alphabet Soup, But You Need to Know
  • DLP Front Projectors and Rear Projection Sets
  • Color Wheel Can Cause Fringing - hence
    multispeed.
  • Extended Color Gamut with Optional 6 Primary
    Colors
  • Screen Door Effect - Very Good Pixel Fill
  • Good Contrast - and keeps improving
  • Good Blacks - and keeps improving
  • Mediocre Off Axis Viewing (Rear Projection)
  • Good Brightness
  • Brightness Ages Some, but Restores w. New Bulb
  • Bulb Life 2000 - 4000 Hours. Cost 300. - 400.
  • Wide Range Of Price Performance.
  • 3 DLP the Best Costliest

95
Digital Television
  • What Type Of HDTV Technology Should I Buy?
  • Alphabet Soup, But You Need to Know
  • LCOS (D-ILA SXRD) Front Projectors and Rear
    Projection Sets
  • Screen Door Effect - Very Good Pixel Fill
  • Good To Great Contrast
  • Some D-ILA is Best in Industry
  • Good To Great Blacks
  • Mediocre Off Axis Viewing (Rear Projection)
  • Good Brightness
  • Brightness Ages Some, but Restores w. New Bulb
  • Bulb Life 2000 - 4000 Hours. Cost 300. - 400.
  • Price Competitive with DLP

96
Digital Television
  • What Type Of HDTV Technology Should I Buy?
  • Alphabet Soup, But You Need to Know
  • Plasma Flat Panels
  • Digital Picture Resolution - some 1920 X 1080,
    many 1346 X 768, Beware 1024 X 768 (43 inch)
  • Screen Door Effect - Very Good Pixel Fill
  • Good To Great Contrast - Rivals CRT
  • Good to Great Blacks - Rivals CRT
  • Superb Off Axis Viewing - Rivals CRT
  • Good Brightness
  • Rich Colors
  • 40,000 Hour Predicted Life But Will Lose
    Brightness w. Age
  • Susceptible to Burn-In
  • Expensive, But Cheaper Than Flat Panel LCD for
    Large Sizes

97
Digital Television
  • What Type Of HDTV Technology Should I Buy?
  • Alphabet Soup, But You Need to Know
  • LCD Flat Panels
  • Digital Picture Resolution - Most 1920 X 1080,
    Some 1280 X 720, Beware 1080 X 1080, Many SD
    (Smaller)
  • Brightest Display Technology
  • Least Refined Display Technology - Digital Grain
  • Screen Door Effect - Acceptable Pixel Fill
  • Mediocre Contrast - But Improving w. Each
    Generation
  • Mediocre Blacks - But Improving w. Each
    Generation
  • Poor Off Axis Viewing - Brightness and Color
    Shifts
  • Wide Range of Picture Quality Prices, but
  • Getting Ever Cheaper To Produce - Rivals CRT in
    Cost for Small Screen Sizes and Is Sexier
  • Will Eventually Rule The Mass Market

98
Digital Television
  • What Happens When I Get The Set Home? Programming
    Sources
  • Over-The-Air Free All local stations now have
    digital channels. Needs a good antenna.
  • During set-up your set will scan for them and
    store.

99
Digital Television
  • What Happens When I Get The Set Home? Programming
    Sources
  • Over-The-Air Free All local stations now have
    digital channels. Needs a good antenna.
  • During set-up your set will scan for them and
    store.
  • Time-Warner Cable Some local digital stations
    available but not NBC or WB. Optional HD Cable
    Network Tier HD Premium Channels Available

100
Digital Television
  • What Happens When I Get The Set Home? Programming
    Sources
  • Over-The-Air Free All local stations now have
    digital channels. Needs a good antenna.
  • During set-up your set will scan for them and
    store.
  • Time-Warner Cable Some local digital stations
    available but not NBC or WB. Optional HD Cable
    Network Tier HD Premium Channels Available
  • Satellite No local digital channels available
    yet.
  • DirectTV More HD Every Week As Cable Networks
    Convert. Rumored Reformatted to 1440 X 1080
  • Dish Network More HD Every Week As Cable
    Networks Convert. Better Picture Quality. Start
    of 1080P PPV

101
Digital Television
  • Cable Networks In HD Already Obsolete!
  • Basic Networks
  • AE Animal Planet Discovery ESPN
  • ESPN2 Food Network Golf Channel HGTV
  • National Geog. Science Channel TBS TLC
  • TNT NFL
  • Premium Networks
  • Big 10 Cinemax HBO Showtime Starz
  • HD Only Networks
  • HDNet HDNet Movies HD News HD Theater
    Universal HD
  • Voom HD Only Networks (Dish Network Satellite
    Only)
  • Animania Equator Family Room Film Fest
  • Gallery Gameplay Kung Fu MHD
  • Monsters Rave Rush Treasure
  • Ultra World Cinema WorldSport

102
Digital Television
  • Collecting HD Programs
  • Digital VHS
  • Use D-VHS or S-VHS Tape
  • 2 1/2 Hrs HD/Tape - 3 hours of TV Minus
    Commercials
  • Simple Operation via Firewire from DVR
  • Also Records/Plays Regular Tapes
  • HD Movies Available on D-Theater Tapes for 5
    Years
  • Blu-Ray
  • Different Dimensions From DVD
  • Require New Factories To Produce
  • Most Discs So Far Are Single Layer
  • 25 Gbytes/Layer
  • Starting Price 400.
  • Disc Starting Price 25. Most 35.
  • Full Spec Players Just Now Becoming Available

103
Digital Television
  • Collecting HD Programs
  • HD-DVD Format War Loser
  • Discs Have Same Structure As DVDs
  • Discs Players Are Cheaper To Produce
  • Discs Can Be Produced In Regular DVD Factories
  • Most Discs Are Dual Layer
  • 15 Gbytes/Layer (but most X 2)
  • More Interaction Capability Fully Ramped Up from
    Start
  • Consistent, Intuitive Disc Menu System
  • Some Dual Discs SD HD on Same Disc
  • Player Prices Start 150.
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