Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design
Reexamination Certificate
2007-05-29
2007-05-29
Whitmore, Stacy A (Department: 2825)
Computer-aided design and analysis of circuits and semiconductor
Nanotechnology related integrated circuit design
C716S030000
Reexamination Certificate
active
10464879
ABSTRACT:
A method of designing a logic circuit includes providing a leaf cell having at least one transistor. The leaf is suitable for use as a 1-cell or a 0-cell in the logic circuit. A first array of abutting leaf cells is tiled using at least one 1-cell and at least one 0-cell to define at least one logical expression by the relative positions of the array cells. Length optimized interconnects are added to the array. Each length optimized interconnect terminates at a last leaf cell in the array to which the interconnect makes contact. The leaf cell may be a floating leaf cell in which any pair of abutting cells are electrically isolated from one another until the length optimized interconnects are added to the design. The leaf cell array likely includes a set of rows and a set of columns in which the leaf cells in each row and the set of columns each correspond to an input of the logical expression.
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Bucki Robert John
Dhong Sang Hoo
Silberman Joel Abraham
Takahashi Osamu
Dillon & Yudell LLP
Salys Casimer K.
Whitmore Stacy A
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