KEYWORDS: Networks, Control systems, Network architectures, Data modeling, Chemical elements, Optical networks, Databases, Reliability, Signal processing, Telecommunications
Hierarchical routing architecture has been adopted by ASON for scaling purpose, and corresponding changes in both network management structure and management information models result. Based on the discussion of new requirements for ASON management system to support the hierarchical routing infrastructure, an ASON management system is proposed and developed in this paper with new network management information models. Finally, the flexibility of the proposed management system is demonstrated on an ASON testbed with 200 emulated nodes.
Grating projection methods have been often used for non- contacting shape measurement. An image of equal-height contours of an object can be obtained in real-time using moire topography. We have developed the phase-shifting scanning moire method for real-time shape measurement with high resolution. But there is a problem that the measuring error becomes larger when the object is moving speedily because several images are captured while shifting the grating phase. In this paper, we propose a phase- shifting scanning moire method using a DMD, which can obtain an image of equal-height contours within a frame time. The direction of a ray reflected at each mirror of a DMD can be selected quickly. For this purpose, we developed a DMD reflection-type CCD camera called as 'DMD camera'. The camera works as a camera whose each pixel has a shutter. The structure and an experimental result to confirm the algorithm to obtain a contour image using het DMD camera are shown.
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