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It’s All Changing - Both my TV & my PC ? Dave Botherway, Melbourne PC User Group March 2008 What’s Changing ? ? TV : Widescreen (4:3 -> 16:9), Larger Screens TV : Analog -> Digital Broadcasting

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Presentation Transcript
Slide1 l.jpg

It’s All Changing -

Both my TV & my PC ?

Dave Botherway,

Melbourne PC User Group

March 2008


What s changing l.jpg
What’s Changing ? ?

  • TV : Widescreen (4:3 -> 16:9), Larger Screens

  • TV : Analog -> Digital Broadcasting

  • TV : High Definition : 576i -> 1080 Vertical lines

  • TV : VCR -> PVR-HDD (VHS tapes obsolete)

  • TV : DVD -> High-Def or Blu-Ray Disk (50Gb)

  • PC : Analog -> Digital Monitors (SXGA, WXGA)

  • PC : Repository for Photos, Music, Movies etc

  • PC : New Inputs - TV Tuner, Games Systems

  • PC : Wireless Home Networking

  • Confusing . . . . Obsolesence . . . .


Tv computers displays l.jpg

RF - Analogue

RF - Analogue

1970s - Vic20

1980s - Analog CGA, VGA, XGA

RF – Digital, HD

2000s

Digital DVI

SXGA

TV & Computers – Displays

NB. 16:9 Screen


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16:9 - Widescreen

Note – extra players

Since 1999, all local TV is 16:9

Standard vs Wide Screen

4:3 - Standard


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Pixel Counts - PC & TV

PAL = 576 lines * 720 pixels

HD = 720 lines * 1280 pixels

Tru-HD = 1080 lines * 1920 pixels

WXGA (16:9) = 1360* 768


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Distortion occurs, many places . .

Analog - Send actual signal

Faithfully recreate the signal – undistorted . .

Digital - Sample & Send values

Analog vs Digital TV

Thus TV moving from Analog -> Digital. Original AU Completion 2008, now 2009/2012



Implications of digital broadcasting l.jpg
Implications of Digital Broadcasting

  • Digital allows higher density (High Definition), more dots/pixels/lines (576 -> 1080), surround sound

  • Digital gives options – more channels (ABC2, SBS-News) different angles (esp. sport), interactive ?

  • Digital signal close to Analog equivalent, (eg. 7D on Ch6) so can use existing TV aerial system

  • But many existing TVs cannot handle Digital TV . . . .

  • Need Conversion unit – Set-Top Box Std Def $70-$100, Hi Def $150-$300, PVR ->$400+

  • Newer TVs have Dual Tuners (Analog & Digital) (and even multiple Digital tuners . . .)

  • Confusion re High Definition - what qualifies ?


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Australian Hi-Def TV Standards

Existing Standard Definition

  • 576i (576 horizontal lines interlaced)- Data Rate: 5-7 Mbps- 576 horizontal lines interlaced x 720 pixels/line

    High Definition Picture Formats

  • 576p (576 horizontal lines progressive)- transmitted by SBS- data rate: 10-13 Mbps- 576 horizontal lines progressive x 720 pixels/line

  • 720p (720 horizontal lines progressive)- transmitted by ABC- data rate: 10-13 Mbps- 720 horizontal lines progressive x 1280 pixels/line

  • 1080i (1080 horizontal lines interlaced)- transmitted by Seven, Nine, Ten- data rate 13-15 Mbps- 1080 horizontal lines interlaced x 1440 or 1920 pixels/line


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TV

VCR

DVDs

PVR

TV Devices


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Personal Video Recorder - with 250G Hard Disk

  • Twin tuner, standard definition (SD) set top box, RF Loop 

  • 4:3 / 16:9 screen format selectable 

  • Electronic programming guide (EPG) & Time Shifting

  • Auto programmable and auto memory, 600-ch memory 

  • Full stereo system, Coaxial digital audio output $ 149


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  • Today’s DVD - 4.7 Gb (8.5 Gb Dual Layer ) insufficient for HD movies, where 1080 = 3 * Current DVD size

  • High Definition DVD = 15 Gb (30Gb DL) – endorsed by HD-Forum Toshiba, LG, NEC, Intel, Microsoft, Paramount, Universal . . . .

  • Blu-ray = 25Gb (50Gb DL) - endorsed by Sony, Panasonic, LG, Philips, Pioneer, Samsung, 20thCentury, Buena Vista

  • Blu-ray can have embedded Java – Key for PC-Games Industry Akin to the BetaMax vs VHS, struggle of 1975 – 1985

  • Real driver is Movie Industry - Warner (largest, 20%) initially supporting bothBUT . . ..

  • Jan-2008, Warner statement : Blu-Ray ONLY from June-08 !

  • Toshiba dropped HD prices ( HD-EX1 $1599 -> $1299 -> $599 +10 movies )


Hd bd hollywood influence l.jpg

HD / BD ? - Hollywood Influence ) insufficient for HD movies, where 1080 = 3 * Current DVD size


Retail confusion l.jpg
Retail Confusion . . . ) insufficient for HD movies, where 1080 = 3 * Current DVD size


The surrender l.jpg
The Surrender . . . ) insufficient for HD movies, where 1080 = 3 * Current DVD size

3rd March, 2008


Tv computers devices l.jpg

Photos ) insufficient for HD movies, where 1080 = 3 * Current DVD size

TV

Home Theatre PC

MP3

VCR

R & W DVDs

TV

DVDs

Internet

PVR

Both wanting BIG Screens

TV & Computers – Devices


Home theatre pc components l.jpg
Home Theatre PC Components ) insufficient for HD movies, where 1080 = 3 * Current DVD size

  • Modern CPU ( Duo, 2+ Ghz )

  • At least 1G Memory

  • TV Tuner(s) - Analog & Digital Hi-Def

  • Large HDD (500G +)

  • DVD Reader / Writer (Blu-Ray ?)

  • Remote Controller, Keyboard

  • Network & Internet Access

  • External Control via URLs

  • Quiet, Aesthetic

  • DVI / HDMI Output to Large Screens, Surround Sound


Home theatre pc software functions l.jpg
Home Theatre PC Software Functions ) insufficient for HD movies, where 1080 = 3 * Current DVD size

  • Media Library Components

  • Handle Photos, Music and Recorded TV / Movies

  • Networked Media, Playlists, Favourites etc

  • Multiple Indexing (Date, topic, Artist, Album)

  • TV / Video Handling

  • Electronic Program Guide (EPG), IceTV ?

  • Record to HDD, tied to EPG, Remote access ?

  • Recall (Time Shifting, ex HDD)

  • Picture in Picture (PiP), Multi display

  • Output to DVD, Blu Ray ?

  • Network & Internet Access ( Internet TV )


Summary l.jpg
Summary ) insufficient for HD movies, where 1080 = 3 * Current DVD size

  • Widescreen TV and PC Display

  • TV moving to Digital Broadcasts

  • High Definition TV and PC ( real 1080 )

  • Convergence of TV and PC

  • Blu-Ray to replace DVDs ?

  • Media Centre / HDTV PC, Remote Control

  • Integration with Gaming, iPods etc

  • Media sharing via Home Wireless Network

  • Moving target, Ongoing “ Investments ”


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