Touch Technology Interacting with Devices Through Natural Human Gestures: Touches, Swipes and Taps
Today we are familiar with many multi-touch devices. iPods apple.com Smartphones apple.com blog.oxagile.com
Tablets rgadget.com Tablet Personal Computers apple.com The iPad rgadget.com
These Devices Respond to Natural Human Touch
These Devices Respond to Natural Human Touch This works in a few different ways
Method 1 Each device has an acrylic or glass surface A finger touches the surface causing light to scatter The reflection is picked up by sensors or cameras The gesture is sent as data to software The software interprets the data and initiates the appropriate response
Method 2 A pressure-sensitive coating is applied to the screen surface The coating flexes under varying pressure of the touch Sensors interpret the pressure The data is sent to software which relays the appropriate response
Method 3 Handheld devices have panels that carry an electrical charge The touch disrupts the electrical field The disruption is registered and sent to the software The software interprets the gesture and initiates the appropriate response
But this isn’t new technology There were important breakthroughs beginning in 1953
The first touch sensitive technology was invented in 1953 By Canadian Physicist and Composer Hugh Le Caine
He built the first music synthesizer
He invented the
touch sensitive keyboard collectionscanada.gc.ca
In the 1960’s the power of computers was realized. 1960 The DEC PDP-1
The PDP-1 sold for $120,000.
MIT wrote the first video game, Space War! for it.
A total of 50 were built.
Each had a cathode ray tube graphic display.
Then the work began to improve Computer-Human Interaction www2.cit.cornell.edu insitebuilders.blogspot.com xmission.com
In 1963, Ivan Sutherland invented SketchPad. Objects were manipulated directly on the computer screen using a light-pen. jabberwockydesign.com jabberwockydesign.com
SketchPadwas a significant breakthrough “It Helped to define how we interact with computers graphically today.1”
One of the first drawing programs
People drew directly on the computer surface
Natural human gestures (drawing) provided the input
Individual drawings were recognized as objects
(This was an important step toward later programming) 1. http://www.newmediareader.com/cd_samples/Kay/index.html
In 1969 Thomas Ellis Developed theGRAILprogram on the RANDtablet
Translated freehand drawing
Files could be saved
Previous text or drawings
could be edited public.csusm.edu
In 1983 the HP-150 was introduced.
This was a Personal Computer
Used existing touch screen technology
Replaced certain keyboard functions with touch
Software was able to interpret touch data
Software then initiated program responses
This same technology was used to create ATM’sin the 1980’s plippard.com
In 1992,computers became mobile The Apple Newton: The first PDA (Personal Digital Assistant) This brought together many previous technological innovations Pen Computing Technology Handwriting Recognition Software Gesture Recognition It also introduced Apple’s 1sttablet platform. (Apple’s 2ndplatform is used in the iPhone, iPod Touch, and iPad.) gdgt.com
These innovations and breakthroughs allow us to interact with our devices using Natural Human Gestures: Touches, Swipes and Taps