A basic tenet of "Ubiquitous computing" (Weiser, 1993 [13]) is that technology should be distributed in the environment (ubiquitous), yet invisible, or transparent.In practice, resolving the seeming paradox arising from the joint demands of ubiquity and transparency is less than simple.This paper documents a case study of attempting to do just that.We describe our experience in developing a working conference room which is equipped to support a broad class of meetings and media.After laying the groundwork and establishing the context in the Introduction, we describe the evolution of the room.Throughout, we attempt to document the rationale and motivation.While derived from a limited domain, we believe that the issues that arise are of general importance, and have strong implications on future research.

Article Free Access Share on Courtyard: integrating shared overview on a large screen and per-user detail on individual screens Authors: Masayuki Tani Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-12 Japan Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-12 JapanView Profile , Masato Horita Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-12 Japan Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-12 JapanView Profile , Kimiya Yamaashi Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-12 Japan Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-12 JapanView Profile , Koichiro Tanikoshi Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-12 Japan Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-12 JapanView Profile , Masayasu Futakawa Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-12 Japan Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-12 JapanView Profile Authors Info & Claims CHI '94: Proceedings of the SIGCHI Conference on Human Factors in Computing SystemsApril 1994 Pages 44–50https://doi.org/10.1145/191666.191690Published:24 April 1994Publication History 12citation685DownloadsMetricsTotal Citations12Total Downloads685Last 12 Months31Last 6 weeks2 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF

Graphics and live video are widely employed in remotely-controlled systems like industrial plants. Interaction with live video is, however, more limited compared with graphics as users cannot interact with objects being observed in the former. Object-Oriented Video techniques are described allowing object-oriented interactions, including the use of real-world objects in live video as reference cues, direct manipulation of them, and graphic overlays based on them, which enable users to work in a real spatial context conveyed by the video. Users thereby understand intuitively what they are operating and see the result of their operation.