The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 2006
Filed:
May. 03, 2004
Ken Saito, Tokyo, JP;
Yoshio Inoue, Tokyo, JP;
Koji Hirakimoto, Tokyo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
An automatic floor-planning method includes extracting a register and a logic operation cell in a semiconductor integrated-circuit unit, extracting a first register set and a second register set that are assumed to input and receive a signal to and from the logic operation cell directly or via other logic operation cell, respectively, creating a set of the logic operation cells as a cluster cell, determining a layout of the cluster cell and the register, selecting a logic level block for which a floor plan is performed, and determining an arrangement and wiring area such that the arrangement and wiring area of the logic level block includes as many cells as possible that belong to the logic level block.