NDLI: An architecture for pen-based interaction on electronic whiteboards

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An architecture for pen-based interaction on electronic whiteboards

Content Provider	ACM Digital Library
Author	LaMarca, Anthony Igarashi, Takeo Edwards, W. Keith Mynatt, Elizabeth D.
Abstract	This paper describes the software architecture for our pen-based electronic whiteboard system, called Flatland. The design goal of Flatland is to support various activities on personal office whiteboards, while maintaining the outstanding ease of use and informal appearance of conventional whiteboards. The GUI framework of existing window systems is too complicated and heavy-weight to achieve this goal, and so we designed a new architecture that works as a kind of window system for pen-based applications. Our architecture is characterized by its use of freeform strokes as the basic primitive for both input and output, flexible screen space segmentation, pluggable applications that can operate on each segment, and built-in history management mechanisms. This architecture is carefully designed to achieve simple, unified coding and high extensibility, which was essential to the iterative prototyping of the Flatland interface. While the current implementation is optimized for large office whiteboards, this architecture is useful for the implementation of a range of various pen-based systems.
Starting Page	68
Ending Page	75
Page Count	8
File Format	PDF
ISBN	1581132522
DOI	10.1145/345513.345256
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2000-05-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Architecture Gui toolkit Flatland Pen computing Implementation Whiteboard
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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