Presentation	1999/7/22 Contents Distribution Management for Information Sharing Yoshihiro Umemoto, Yuuichi Teranishi, Tomohiro Hasegawa, Tetsuji Satoh,
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Abstract(in English)	To prevent illegal use and promote distribution of digital contents, compound contents with usage restrictions are discussed. In this paper, we propose a new contents server model for retrieving with condition about both contents and usage restrictions, and synchronizing distributed contents and usage restrictions based on distribution history. This model treats contents and usage restrictions separately. This makes contents retrieval effective with separate indices of contents and usage restrictions, and makes management for modifing contents and usage restrictions easy and adapitive. This paper also discribes the prototype system called 'iSquare', which is based on the contents server model we propose.
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Paper #	DE99-42
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Committee	DE
Conference Date	1999/7/22(1days)
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Registration To	Data Engineering (DE)
Language	JPN
Title (in Japanese)	(See Japanese page)
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Title (in English)	Contents Distribution Management for Information Sharing
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1st Author's Name	Yoshihiro Umemoto
1st Author's Affiliation	NTT Cyber Space Laboratories()
2nd Author's Name	Yuuichi Teranishi
2nd Author's Affiliation	NTT Cyber Space Laboratories
3rd Author's Name	Tomohiro Hasegawa
3rd Author's Affiliation	NTT Cyber Space Laboratories
4th Author's Name	Tetsuji Satoh
4th Author's Affiliation	NTT Cyber Space Laboratories
Date	1999/7/22
Paper #	DE99-42
Volume (vol)	vol.99
Number (no)	202
Page	pp.pp.-
#Pages	6
Date of Issue