PTHINC Better web browsing on your mobile device Joeng Kim Ricardo Baratto Jason Nieh Columbia...
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Transcript of PTHINC Better web browsing on your mobile device Joeng Kim Ricardo Baratto Jason Nieh Columbia...
pTHINCBetter web browsing on your mobile device
Joeng KimRicardo Baratto
Jason NiehColumbia University, USA
Outline
• Mobile Web Browsers
• Problem
• Alternative: Thin Clients
• Usability
• Visual Comparison
• Measurements
• Conclusion
Mobile Web Browser
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
VIDEO
FLASH
IMAGE
Issues with Mobile Browsers
• High quality pages mean..– More Data Download– More Client Processing– Compatibility Issues
• Application, Platform, Browsers, Standards
– Requirement Issues• Flash, Java Applets, Javascript, Plug-in
– Resize Issues– Language support
Alternative: Thin Clients
Thin Client
• Leverage Server– High speed connection– More resource– Persistence
• Allows– Heterogeneous display– Stateless client
Thin clients vs Web
• rewrite applications for the web
• client browser and helper applications
• preserve software investments
• no client applications
Thin Clients
pTHINC
applications
windowsystem
devicedriver
framebufferraw pixels
high-level requests
virtual devicedriver
pTHINC
applications
windowsystem
display updates
input events
pTHINC
• Fast and Lightweight
• Leverage and Virtualize display
• Video support
pTHINC protocol
• copy
• solid fill
• pixmap fill
• bitmap
• RAW
Usability Enhancements
pTHINC Usage
Visual Comparison
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
Measurements
Measurements
• Test run on basic Web benchmarks
• Variable conditions– PDA: Dell Axim x5, x51v
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
Web Latency
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
Latency measurement based on average page load time
Video Results
Quality based on amount of data transferred
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
Conclusion
• Mobile Web Browsers can be improved
• pTHINC: potential alternative– Increased visual performance– Better usability– Helper functions such as video
more info
network computing laboratoryhttp://www.ncl.cs.columbia.edu