🗊Презентация Touchscreen implementation for multi-touch

Категория: Технология
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Touchscreen implementation for multi-touch, слайд №1Touchscreen implementation for multi-touch, слайд №2Touchscreen implementation for multi-touch, слайд №3Touchscreen implementation for multi-touch, слайд №4Touchscreen implementation for multi-touch, слайд №5Touchscreen implementation for multi-touch, слайд №6Touchscreen implementation for multi-touch, слайд №7Touchscreen implementation for multi-touch, слайд №8Touchscreen implementation for multi-touch, слайд №9Touchscreen implementation for multi-touch, слайд №10Touchscreen implementation for multi-touch, слайд №11Touchscreen implementation for multi-touch, слайд №12Touchscreen implementation for multi-touch, слайд №13Touchscreen implementation for multi-touch, слайд №14Touchscreen implementation for multi-touch, слайд №15Touchscreen implementation for multi-touch, слайд №16Touchscreen implementation for multi-touch, слайд №17Touchscreen implementation for multi-touch, слайд №18Touchscreen implementation for multi-touch, слайд №19Touchscreen implementation for multi-touch, слайд №20Touchscreen implementation for multi-touch, слайд №21Touchscreen implementation for multi-touch, слайд №22Touchscreen implementation for multi-touch, слайд №23Touchscreen implementation for multi-touch, слайд №24Touchscreen implementation for multi-touch, слайд №25Touchscreen implementation for multi-touch, слайд №26Touchscreen implementation for multi-touch, слайд №27Touchscreen implementation for multi-touch, слайд №28Touchscreen implementation for multi-touch, слайд №29Touchscreen implementation for multi-touch, слайд №30
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Слайды и текст этой презентации

Слайд 1


Touchscreen Implementation for Multi-Touch Design Team 2: Joey Grover Ahmad Alqudaihi Jason Grimes Dennis Wey
Описание слайда:
Touchscreen Implementation for Multi-Touch Design Team 2: Joey Grover Ahmad Alqudaihi Jason Grimes Dennis Wey

Слайд 2


Touchscreens & Graphical User Interface Guiding principles behind GUI Displays relevant information Intuitive technology Touchscreen Electronic Display Recognizes presence of user’s touch Provides GUI and user control
Описание слайда:
Touchscreens & Graphical User Interface Guiding principles behind GUI Displays relevant information Intuitive technology Touchscreen Electronic Display Recognizes presence of user’s touch Provides GUI and user control

Слайд 3


Touchscreen Technologies Resistive Capacitive Surface Projected Optical imaging Infrared
Описание слайда:
Touchscreen Technologies Resistive Capacitive Surface Projected Optical imaging Infrared

Слайд 4


Resistive Touchscreen Composed of multiple layers separated by thin spaces Using indium tin oxide (ITO) layers Different standards 4, 5, and 8 wire types Each have advantages
Описание слайда:
Resistive Touchscreen Composed of multiple layers separated by thin spaces Using indium tin oxide (ITO) layers Different standards 4, 5, and 8 wire types Each have advantages

Слайд 5


Resistive Touchscreen User Presses Down Contact is Made Uniform Voltage on First Screen for X Same on Second screen for Y Happens instantaneously
Описание слайда:
Resistive Touchscreen User Presses Down Contact is Made Uniform Voltage on First Screen for X Same on Second screen for Y Happens instantaneously

Слайд 6


4-Wire design One screen for X Another screen for Y Both create voltage gradient. Uses voltage divider
Описание слайда:
4-Wire design One screen for X Another screen for Y Both create voltage gradient. Uses voltage divider

Слайд 7


Advantages Works well with fingertip or stylus input Generally most affordable touchscreen technology Rugged/Durable Has multi-touch input capabilities Stantum Touchco
Описание слайда:
Advantages Works well with fingertip or stylus input Generally most affordable touchscreen technology Rugged/Durable Has multi-touch input capabilities Stantum Touchco

Слайд 8


Disadvantages Not as accurate Multi-touch much more complex Usually no discretion between stylus and hand More pressure needed
Описание слайда:
Disadvantages Not as accurate Multi-touch much more complex Usually no discretion between stylus and hand More pressure needed

Слайд 9


Capacitive Touch Technology Consists of: Insulator (glass or Air) Conductive coating (ITO) Two types: Surface projected
Описание слайда:
Capacitive Touch Technology Consists of: Insulator (glass or Air) Conductive coating (ITO) Two types: Surface projected

Слайд 10


Surface Capacitance Only one side is coated Electrodes at the edges Distribute voltage
Описание слайда:
Surface Capacitance Only one side is coated Electrodes at the edges Distribute voltage

Слайд 11


Surface Capacitance Cont. Before
Описание слайда:
Surface Capacitance Cont. Before

Слайд 12


After Capacitor forms Current flows
Описание слайда:
After Capacitor forms Current flows

Слайд 13


Projected Capacitance Two parallel ITO layers Two sheets of glass
Описание слайда:
Projected Capacitance Two parallel ITO layers Two sheets of glass

Слайд 14


Projected Capacitance Capacitor at each point on the surface
Описание слайда:
Projected Capacitance Capacitor at each point on the surface

Слайд 15


Projected Capacitance Cont. E Field is projected through glass Finger couples with E field Capacitance changes
Описание слайда:
Projected Capacitance Cont. E Field is projected through glass Finger couples with E field Capacitance changes

Слайд 16


Surface vs. Projected Limited resolution Single touch Operation with direct contact
Описание слайда:
Surface vs. Projected Limited resolution Single touch Operation with direct contact

Слайд 17


Multi-Touch Using Infrared
Описание слайда:
Multi-Touch Using Infrared

Слайд 18


Frustrated Total Internal Reflection A process by which light is trapped within a medium and can be interrupted by a third medium of higher reflective index to cause light to escape.
Описание слайда:
Frustrated Total Internal Reflection A process by which light is trapped within a medium and can be interrupted by a third medium of higher reflective index to cause light to escape.

Слайд 19


Rear Projection Hardware Infrared LED’s or lasers with line generator for optical dispersion Glass surface or plexi-glass Infrared Camera Projector Cost Scalability
Описание слайда:
Rear Projection Hardware Infrared LED’s or lasers with line generator for optical dispersion Glass surface or plexi-glass Infrared Camera Projector Cost Scalability

Слайд 20


Alternative Single-Unit Design Eliminates rear projection Expensive Robustness
Описание слайда:
Alternative Single-Unit Design Eliminates rear projection Expensive Robustness

Слайд 21


Software
Описание слайда:
Software

Слайд 22


Software Cont. Interpret and Relay Information Assign Objects or gestures with Unique ID# and location Compare and Execute
Описание слайда:
Software Cont. Interpret and Relay Information Assign Objects or gestures with Unique ID# and location Compare and Execute

Слайд 23


Improving Accessibility? Universal Design Principles Utility for all users Simple and intuitive Touchscreens depend on visual feedback in order to use
Описание слайда:
Improving Accessibility? Universal Design Principles Utility for all users Simple and intuitive Touchscreens depend on visual feedback in order to use

Слайд 24


Pointing Device Gestures Cursor movements as command shortcuts Takes place of keyboard shortcuts Useful in applications where keyboard use is less prominent or undesirable
Описание слайда:
Pointing Device Gestures Cursor movements as command shortcuts Takes place of keyboard shortcuts Useful in applications where keyboard use is less prominent or undesirable

Слайд 25


Implementation: Step 1 Filter Input Sampling rate Smooth out input data, get rid of unnecessary “noise” Simplify data analysis
Описание слайда:
Implementation: Step 1 Filter Input Sampling rate Smooth out input data, get rid of unnecessary “noise” Simplify data analysis

Слайд 26


Implementation: Step 2 Vectorize Separate x- and y-component Compute dominant component and ignore smaller one Store in array
Описание слайда:
Implementation: Step 2 Vectorize Separate x- and y-component Compute dominant component and ignore smaller one Store in array

Слайд 27


Implementation: Step 3 Matching Match captured vector array to pre-defined gesture library If no match, pop smallest vector from array and repeat matching process
Описание слайда:
Implementation: Step 3 Matching Match captured vector array to pre-defined gesture library If no match, pop smallest vector from array and repeat matching process

Слайд 28


Example
Описание слайда:
Example

Слайд 29


Goal Allows for a quicker and more efficient UI Universal Design Enhances usability for visually-impaired as well as non-impaired Easily added to existing touchscreen devices, no additional hardware required
Описание слайда:
Goal Allows for a quicker and more efficient UI Universal Design Enhances usability for visually-impaired as well as non-impaired Easily added to existing touchscreen devices, no additional hardware required

Слайд 30


Questions?
Описание слайда:
Questions?

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