Technology FuturesTechnology Futures

電機所碩一電機所碩一R93921095 R93921095 邱國權邱國權

2005/6/12005/6/1

OutlineOutline

Visual DisplaysVisual Displays Sharp Corporation's TFT 3D LC

D Audio DisplaysAudio Displays Haptic DisplaysHaptic Displays

Visual DisplaysVisual Displays

Stereoscopic visual displayStereoscopic visual display Autostereoscopic displayAutostereoscopic display

Specially designed lenticular screeSpecially designed lenticular screenn

Eliminating the need for wearing sEliminating the need for wearing special headgearpecial headgear

No limitation of user’s movementNo limitation of user’s movement Real-time interactive stereoscopic Real-time interactive stereoscopic

wall-size displaywall-size display

3D Display Products3D Display Products

3D display without the need for special glasses3D display without the need for special glasses Switches between 2D and 3D display modeSwitches between 2D and 3D display mode

Stereopsis TheoryStereopsis Theory

If two images were If two images were presented, one to presented, one to each eye, whereby each eye, whereby the perspective the perspective difference was the difference was the same as that same as that normally viewed by normally viewed by each eye each eye independently, independently, then the brain then the brain would fuse these would fuse these two images and two images and interpret this as an interpret this as an image with visual image with visual depth. depth.

Wheatstone’s mirror stereoscoWheatstone’s mirror stereoscopic display pic display

LEFT

EYERIGHT

EYE

A E’E A’

Original technology of 3D Original technology of 3D displaydisplay

Using a high refresh rate CRT mUsing a high refresh rate CRT monitor and 3D glasses onitor and 3D glasses

Computer generates two differeComputer generates two different perspective images and sendnt perspective images and sends each image to the CRT seques each image to the CRT sequentially ntially

The 'wrong' eye is blocked from The 'wrong' eye is blocked from seeing an image by glassesseeing an image by glasses

Sharp 3D display Sharp 3D display

Two images are displayed concTwo images are displayed concurrently urrently

The display uses revolutionary sThe display uses revolutionary switchable parallax barrier technowitchable parallax barrier technology to ensure each eye only selogy to ensure each eye only sees one of these images es one of these images

The parallax barrier is a series oThe parallax barrier is a series of vertical slots which are carefullf vertical slots which are carefully designed to focus pixels in diffy designed to focus pixels in different directions erent directions

SummarySummary

The Parallax Barrier is placed The Parallax Barrier is placed between the LCD and the between the LCD and the backlight and can be switched backlight and can be switched on and offon and off

Without glasses and objects Without glasses and objects appear to leap out of the screenappear to leap out of the screen

Need appropriate software Need appropriate software

Audio DisplaysAudio Displays

Present sound Present sound regardless of which regardless of which the display is placedthe display is placed Tracked headphonesTracked headphones

Conjunction with Conjunction with projection VR projection VR systemsystem Transparent Transparent

speakersspeakers

Other techniquesOther techniques

Sonic renderingSonic rendering Physically based sound-modeling Physically based sound-modeling

algorithmsalgorithms Echo cancellationEcho cancellation

For large-screen immersive For large-screen immersive spacesspaces

Haptic DisplaysHaptic Displays

Tactile sensationTactile sensation Allow the Participant to sense Allow the Participant to sense

different surface textures or object different surface textures or object edgesedges

Array of small pinsArray of small pins Array of miniature electrodesArray of miniature electrodes

Temperature displayTemperature display Minimal effort in developing but Minimal effort in developing but

could create a compelling could create a compelling experienceexperience

Miniature ElectrodesMiniature Electrodes