Sakae Uno

A general purpose graphic system for computer aided design

The experimental Advanced Integrated Designers Activity Support (A-IDAS) system is intended to be a base for a total engineering system rather than a pure graphic system. The system provides a database in which graphic data, geometric data and engineering data are stored in a relational data model. It also provides a graphic management facility which can manipulate not only pictures drawn with lines, but those drawn as areas. Areas are represented by crosshatched lines or colors. In more complicated ways, they can be represented as texture or scenery. The system controls two kinds of graphic display devices: a vector display and a raster display. These devices are supported through a device independent user interface when pictures are drawn with lines. With this experimental system, it has been found out that one can develop an engineering system having fairly general purpose capabilities.

Canonical Geometric Modeling For Computer Aided Design

The objective of this paper is to describe a unified and flexible geometric model which is called a canonical geometric model.

Concept and tools for interactive graphics-A-IDAS

Abstract This paper describes a graphics system, which has been and is being developed at IBM Japans Tokyo Scientific Center as a research prototype, and introduces a geographical data processing system as its application example. The graphics system, called Advanced Integrated Designers Activity Support (A-IDAS) System, provides not only graphic hardwares and softwares, but also a database package with a relational form and a software managing a conversational environment. Since these softwares are general purpose aids, they are effective for establishing various kinds of application systems easily and rapidly. A geographical data processing system is introduced as an example of utilization of the aids.

Specific Requirements in Engineering Data Base

Engineering design process requires more dynamic and more powerful data base than usual one. Data management must be flexible enough and data structure should be free from the first normal form restriction of the relational data model.