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Displays Tech. 1 Thursday, March 12, 2009

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Displays Tech.

1Thursday, March 12, 2009

Know your output device

2Thursday, March 12, 2009

Numbersvideo, film, or computer

3Thursday, March 12, 2009

Names

i: Interlaced

i.e. video

p: Progressive

i.e computer and film

xxxi -> interlaced format

xxxp -> progressive format

4Thursday, March 12, 2009

Conventions

NTSC: ‘US’ standard

720!480, 60Hz

PAL: ‘european’ standard

720!576, 50Hz

5Thursday, March 12, 2009

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

6Thursday, March 12, 2009

Resolution (computer)

VGA: 640x480

Laptop: 1024x76, 1280x1024, ...

HD: 1920x1080

7Thursday, March 12, 2009

Resolution (film)

2K: 2048!1080

4K: 4096!2160 (3840x2160)

8K: ...

24Hz or 48Hz (frames per second)

8Thursday, March 12, 2009

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

9Thursday, March 12, 2009

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

10Thursday, March 12, 2009

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.

11Thursday, March 12, 2009

Resolution

12Thursday, March 12, 2009

Aspect Ratio

13Thursday, March 12, 2009

Remember

Phone: around 0.15 Mpixels

SD: around 0.5 Mpixels

720p (or 1024x768): around 1Mpixels

HD: around 2 Mpixels

4K: around 8 Mpixels

14Thursday, March 12, 2009

New Displays

15Thursday, March 12, 2009

Multi-touch

Multiple touches at once

more than one finger

several users

16Thursday, March 12, 2009

touch screen

Resistive

Layers technology, dim, cheap

Capacitive

Electrical charge, sensors in corners, bright

Surface acoustic wave

No layer, source and receptor

17Thursday, March 12, 2009

touch screen

Ergonomics and issues

Finger stress

Fingernail as stylus

Fingerprints

"Gorilla arm"

18Thursday, March 12, 2009

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

19Thursday, March 12, 2009

Sensors / features

Touch screen

Proximity sensor

Ambient light

3-axis accelerometer

GPS

Camera

Bluetooth

Microphone

Wifi

3G (~ 1 Mbit/s)

20Thursday, March 12, 2009

Multi-touch

21Thursday, March 12, 2009

Multi-touch

22Thursday, March 12, 2009

LambdaTable

23Thursday, March 12, 2009

TacTile

24Thursday, March 12, 2009

TacTile

25Thursday, March 12, 2009