Interface2011_Pres - NATURAL USER INTERFACE & REMOTE...

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NATURAL USER INTERFACE & REMOTE SENSING TECHNOLOGY BY: THERA HUBLER, MAGGIE MAZURKIEWICZ, & KRISTIN MIKELSON
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Agenda What is Natural User Interface? Remote Sensing Technologies Motion Sensing Thermal Sensing Touch Sensing Overview & Additional Applications Questions
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Natural User Interface Collection of input through remote sensing technology to be translated by a proprietary software system which generates a reactionary output
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Remote Sensing Technology Software Motion Sensing Thermal Detection Touch Sensing Voice Recognition Eye Tracking Depth Monitoring
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MOTION SENSING TECHNOLOGY
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2 Components Sensor standard CMOS technology Perform depth measurements Laser beam Cone of light that reaches each point of the surface at the same time
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Capturing Images Digitally Convert light into electrical charge & process it into electronic signal 2 types of technologies CCD (charge coupled device) CMOS (complementary metal oxide semiconductor) Each has unique strengths & weaknesses
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CCD Sensor Thousand (or millions) of light sensitive cells or pixels Capable of producing electrical charge proportional to amount of light received
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Capturing the Image Light generates electron-hole pairs in depletion region Applied voltage causes electron to migrate into n-type silicon layer & creates potential well that traps charge
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Charge Readout Process Stage 1: Moving pixel charges across the surface of array 3 phases
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Charge Readout Process Stage 2: Reading out pixel charges into register before being digitized Top row moved into readout register Moved horizontally Sent to analogue-to-digital converter & then to memory
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CMOS Sensor Each pixel has its own charge-to-voltage conversion Sensor often includes: Amplifiers Noise correction Digitization circuits (outputs are digital)
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CMOS Sensor Each pixel has: A photodiode A capacitor Up to 3 transistors Steps: Before light exposure, capacitors are charged Charge drains slowly proportional to level of light Remaining charge read out & digitized
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CCD vs. CMOS
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This note was uploaded on 01/24/2012 for the course ECE 317 taught by Professor Peck,t during the Spring '08 term at University of Illinois, Urbana Champaign.

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Interface2011_Pres - NATURAL USER INTERFACE & REMOTE...

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