Representing device layout using tree structure

Details Representing device layout using tree structure Representing device layout using tree structure

2006-08-22

2006-08-22

Siek, Vuthe (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

Reexamination Certificate

active

07096444

ABSTRACT:
Methods are described herein for using a tree structure representation for searching selected areas of a programmable device layout in order to determine the existing component configuration of a device. The tree structure may be generated by assigning root nodes, branch nodes and leaf nodes to portions of a tree structure. A search algorithm may walk the tree structure representation of the device layout to determine the existing component configuration of the device of a selected portion of the device layout. The tree structure is simplified by each node of a set of sister nodes on the tree representing equally sized sub-area of the device layout. The tree structure is capable of representing units of layout of multiple different sizes and non-uniform layout units that may straddle more than one sub-area.

REFERENCES:
patent: 6009251 (1999-12-01), Ho et al.
patent: 6080204 (2000-06-01), Mendel
patent: 6530070 (2003-03-01), Kruse
patent: 6625611 (2003-09-01), Teig et al.

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