This paper discusses a new architecture for programmable hardware targeted at high-speed digital telecommunication systems and describes a preliminary design. The basic architecture of the programmable hardware is proposed based on the characteristics of functions and an analysis of logic used in actual communication subsystems performing high-speed bit level operations. The proposed architecture, called PROTEUS, includes a pipeline structure of logic and latch groups, and a 2-stage logic block structure that consists of small LUTs and wide gates. The design strategy of a prototype chip and the CAD techniques used to achieve the required pelformance are also discussed.

We introduce a CAD system for the original FPGA "PROTEUS", which has several features suitable for the effciernt realization of practical digital transport processing systems. These features are considered in the design of the CAD system. Our CAD system supports both automatic and manual design environments. The automatic design environment offers complete top-down design from high-level hardware description to dovvnloading the programming data into the FPGA. In the manual design environment, an interactive chip editor is provided that enables high-performance circuits to be constructed skillfully. This paper introduces our design strategy and the algorithms that realize them.

A new FPGA(Fie1d Programmable Gate Array) is developed for high-speed digital telecommunication systems. Its architectwe is based on the fundamental characteristics extracted from an analysis of actual systems. The FPGA has several unique features for realizing highspeed transport data processing. It allows us to build the high-performance components that are frequently used in transport data processing. In addition, its inter-chip connection mechanism enables us t o build fiexible multi-FPGA modules. Furthermore, we introduce a dedicated CAD system for the FPGA. We design several actual transport processing circuits on the FPGA using the CAD system and evaluate them. Experimental results show that the device has the potential to realize practical systems.

In today's Internet, which includes diverse and complex network technologies and services, it is difficult to achieve 'comfortable communication' that satisfies network users from the viewpoint of aspects such as communication usability, availability, quality and safety. To alleviate these problems and make communication a comfortable experience for users, we developed a middleware named Communication Service Concierge (CSC). CSC focuses on communication dataflow and coordinates various resources affecting the behavior of the flow such as network applications, protocols, network devices and computing equipment. These elements can be scattered throughout the end-to-end communication link of the dataflow. CSC provides a distributed communication control framework, which improves user satisfaction on the basis of agent computing using configurable and downloadable software components. This paper briefly describes the design concept and basic architecture of CSC, as well as two prototype applications for it that are associated with home networking and mobile computing. These are the most effective ways in which CSC helps users to achieve more comfortable communication.

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