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The design goal of ClearBoard is the seamless integration of interpersonal
space, in which one can speak face to face with a remote interlocutor,
and the shared workspace, in which activities can be conducted collaboratively.
In order to realize this goal we came up with a simple concept: people
speaking to each other through a glass wall while drawing on both
sides of it. ClearBoard-1 combines video drawing technology that allows
simultaneous drawing on a common white board without a computer and
a video conferencing function that allows face to face conversation.
This system was presented at CHI 92 and CSCW 92 as well as being exhibited
at NTT's exhibition space in Kasumigaseki.
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