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、安全和可靠性1。为了在短时间内实现高功能、高性能的系统设计，我们提出了一种无线通信系统大规模集成电路的设计方法，并提出了一种基于芯片的共面波导匹配(CPW)电路设计新技术。我们还为可重构系统开发了新的设计方法，称为SysteMorph和Redifis，以实现灵活的系统设计。这些技术已经转移到工业中进行实际应用。作为低功耗系统大规模集成电路的设计技术，我们从体系结构、电路和器件三个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贡献。作为安全可靠系统的设计技术，我们发展了密码和散列函数电路的新设计技术。作为技术的应用，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年开放的伊藤新校区建设了一个试验田。我们开发了一个身份管理系统，名为MIID(媒体独立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发放了4000张卡片。通过实验，得出了系统大规模集成电路在社会系统中作为信息基础设施的需求和可能性。我们还建立了电子货币的数学模型，并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.