Abstract
This paper presents a methodology to support collaboration in engineering whose style is called asynchronous and idea integrative. “Idea integrative” style means that multiple engineers are involved in the same subject and make ideas for the subject. “Asynchronous” style means that engineers' working time are different from each other and it is difficult for them to have meetings for discussion on the subject. The key to support this kind of collaboration style is to make media with which engineers can talk as if they talk with partners to understand thought of the partners and know history of engineering. Visualization method of history and ways of interaction between engineers and this media are proposed from the viewpoint of virtual re-experience of other engineers' engineering processes. In this paper, a prototype system is also presented.