Displays Tech. - Electronic Visualization Laboratory interlaced format ... 720p (half-HD,...
Transcript of Displays Tech. - Electronic Visualization Laboratory interlaced format ... 720p (half-HD,...
Names
i: Interlaced
i.e. video
p: Progressive
i.e computer and film
xxxi -> interlaced format
xxxp -> progressive format
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Conventions
NTSC: ‘US’ standard
720!480, 60Hz
PAL: ‘european’ standard
720!576, 50Hz
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ResolutionSD: standard definition, TV, DVD
720!480i, 720x480p
720p (half-HD, quarter-HD)
1280!720 progressive
1080i
1280!1080, 1440!1080, or 1920!1080i
60Hz
1080p
1920*1080
30Hz, 24Hz
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Resolution (computer)
VGA: 640x480
Laptop: 1024x76, 1280x1024, ...
HD: 1920x1080
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Resolution (film)
2K: 2048!1080
4K: 4096!2160 (3840x2160)
8K: ...
24Hz or 48Hz (frames per second)
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Resolution (details)
350!240 (260 lines): Video CD
330!480 (250 lines): Umatic, Betamax, VHS, Video8
400!480 (300 lines): Super Betamax, Betacam (pro)
440!480 (330 lines): analog broadcast
560!480 (420 lines): LaserDisc, Super VHS, Hi8
670!480 (500 lines): Enhanced Definition Betamax
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Resolution (details)
720!480 (520 lines): D-VHS, DVD, miniDV, Digital8, Digital Betacam (pro)
720!480 (400 lines): Widescreen DVD (anamorphic)
1280!720 (720 lines): D-VHS, HD DVD, Blu-ray, HDV (miniDV)
1440!1080 (810 lines): HDV (miniDV)
1920!1080 (1080 lines): D-VHS, HD DVD, Blu-ray, HDCAM SR (pro)
10,000!7000 (7000 lines): IMAX, IMAX HD, OMNIMAX
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Resolution (details)
Film:
35 mm film is scanned for release on DVD at 1080 or 2000 lines as of 2005.
35 mm original camera negative motion picture film can resolve up to 6,000 lines.
35 mm projection positive motion picture film has about 2,000 lines which results from the analog printing from the camera negative of an interpositive, and possibly an internegative, then a projection positive.
Sequences from newer films are scanned at 2,000, 4,000 or even 8,000 columns (line measured the other directions), called 2K, 4K and 8K, for quality visual effects editing on computers.
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Remember
Phone: around 0.15 Mpixels
SD: around 0.5 Mpixels
720p (or 1024x768): around 1Mpixels
HD: around 2 Mpixels
4K: around 8 Mpixels
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touch screen
Resistive
Layers technology, dim, cheap
Capacitive
Electrical charge, sensors in corners, bright
Surface acoustic wave
No layer, source and receptor
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touch screen
Ergonomics and issues
Finger stress
Fingernail as stylus
Fingerprints
"Gorilla arm"
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iPhone
Screen size: 3.5!in (89!mm)
Screen resolution: 480!320!pixels at 163!ppi, with 3:2 aspect ratio
Input devices: Multi-touch screen interface plus a "Home" button and "Sleep/Wake" located on the top of the iPhone.
Built-in rechargeable, non-removable battery
2!megapixel camera
Location finding by detection of cell towers and Wi-Fi networks
ARM processor
PowerVR MBX 3D graphics co-processor
Memory: 128!MB DRAM
Storage: 8!GB or 16!GB flash memory
Operating System: iPhone OS
Quad band GSM / GPRS / EDGE: GSM 850 / 900 / 1800 / 1900
Wi-Fi (802.11b/g)
Bluetooth 2.0 with EDR
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Sensors / features
Touch screen
Proximity sensor
Ambient light
3-axis accelerometer
GPS
Camera
Bluetooth
Microphone
Wifi
3G (~ 1 Mbit/s)
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