26-10-2016, 11:20 AM
1461264175-navaneeth1.pptx (Size: 3.6 MB / Downloads: 5)
MOTIVATION
Touch screens are familiar nowadays.
Certain drawbacks of them are :
Limited interaction space
Less accurate interactions
Cannot make buttons and screens larger without losing the primary benefits of small size
OVERVIEW
Giving input through skin.
Skinput turns human body into touch screen input
surface.
Developed by Chris Harrison, Desney Tan, and
Dan Morris of the Microsoft Research's
Computational User Experiences Group.
Its first public appearance was at Microsoft's
Tech Fest 2010
WHAT SKINPUT DOES?
Primary functions are
Control audio devices.
Make phone calls.
Navigate browsing
systems.
Play games.
Uses series of sensors to determine where user tapped on skin
PRINCIPLE OF SKINPUT
It listens to vibrations in your
body.
Skinput also responds to the
various hand gestures.
The arm is an instrument
WHAT MAKES IT WORK?
PICO PROJECTOR
It is also known as pocket projector or mobile projector.
Displays Menu.
The system comprises three main parts:
The Laser light source
The Combiner optics
The Scanning mirror
BIO ACOUSTICS
Study of sound waves inside living body.
When a finger taps the skin, several distinct forms of acoustic energy are produced.
Longitudinal Waves
Transverse Waves
TRANSVERSE WAVES
Created by the displacement of the skin from a finger impact.
They are visible when we slow down it 14 times.
Tapping on soft regions of the arm create higher amplitude transverse wave than tapping on boney areas.
Sensors activated as wave passes under it.
ARMBAND
ARMBAND MECHANISM
Detect vibrations transmitted through the body.
Arm band device consists of two components:
1. Projector
2. Detector
Armbands are placed in 2 ways.
Above the elbow
Below the elbow
ARMBAND PROTYPE
Two arrays of 5 sensing elements incorporated
into an armband.
2 Sensor packages focus on the arm of armband
One package was located near the Radius
other near the Ulna.
MECHANISM
Arm band detects the acoustic signals and
convert them to electronic signals which easily
enable the users to perform simple tasks as
browsing through a mobile phone menu, making
calls, controlling portable music players etc.