Research on System LSI Design Methodology for Social Infrastructure

我们已经开发了系统LSI设计技术，作为未来社会系统信息基础设施的重要组成部分，这要求具有足够的功能，性能，质量，安全性和可靠性。作为高功能和高性能系统的设计技术，我们开发了无线通信系统LSI的设计方法和CMOS芯片上的共面波导匹配（CPW）电路的新技术。我们还为可重构系统开发了新的设计方法，称为SysteMorph和redifi，用于灵活的系统设计。这些技术已转化为工业实际应用。作为低能耗系统LSI的设计技术，我们从体系结构、电路和器件层面提出了多种设计技术。数据路径宽度控制技术和复杂的通信系统能量降低技术是主要的贡献。作为安全可靠系统的设计技术，我们开发了新的加密电路和哈希函数设计技术。作为该技术的应用，我们提出了一个电子投票和拍卖系统。作为社会系统的一个例子，我们在2005年开设的伊藤新校区建造了一个试验田。我们开发了一个ID管理系统，命名为MIID (Media Independent ID)，并在IC卡上实现。我们已经为伊藤校区的学生和教职员工分发了4000张卡片。通过实验，得出了系统大规模集成电路作为一种信息基础设施在社会系统中使用的要求和可能性。建立了电子货币的数学模型，讨论了安全货币系统的要求。

We have developed system LSI design technologies as an important component of information infrastructure for the future social systems, which is requesting properties with enough functionality, performance, quality, security and reliability.1. As the design technology for high-functionality and high-performance systems with short design time, we developed a design methodology for wireless communication system LSI's and a new technology of a Coplanar Waveguide Matching (CPW) Circuit on a CMOS chip. We also developed new design methodologies for reconfigurable systems, called SysteMorph and Redifis, for flexible system design. These technologies have been transferred to industries for practical applications.2. As the design technology for low energy consumption system LSI's, we proposed various design techniques in architecture, circuit and device levels. A datapath width control technique and sophisticated energy reduction techniques for communication systems are the major contributions.3. As the design technology for secure and reliable systems, we developed new design techniques for circuits of cryptography and hash-functions. As applications of the technology, we proposed an electric voting and auction systems.As an example of social systems, we constructed an experimental field in our new Ito campus opened in 2005. We developed an ID management system, named MIID (Media Independent ID), and implemented it on IC cards. We have distributed 4, 000 cards for the students and faculty members in Ito campus. Through the experiments, we got requirements and possibilities of usage of system LSI's as an information infrastructure in the social systems. We also developed a mathematical model of electric money and discussed requirements of a secure money system.