Abstract
The concept of stepwise modular design, which is synchronized the progress of design process by using of the structure of the graph of a product model, has already proposed in 1st report. This 2nd report is based on the previous and developed from two viewpoints; one is the information of Interface model in a graph-described product model, and the other is information processing in stepwise refinement of Interface. In this report, the concept of the priority between the each Interface is introduced and the priority is described explicitly as the information in Interface. Then this priority information is available for stepwise modular breakdown considering the design intension from the upper layer to the lower layer. And the prototype system based on this concept has been implemented and some examples are shown.
