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:
Apr. 08, 2003
Filed:
Jun. 20, 2000
Joseph Peter Kerzman, New Brighton, MN (US);
James Edward Rezek, Mounds View, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
Method and apparatus for efficiently traversing and placing cells in a circuit design database are disclosed. In one illustrative embodiment, one or more leaf cells are identified as base objects. The base objects are placed and aligned along a selected dominate axis. Once the base objects are identified, an input port is identified by the circuit designer. In many cases, selected base objects will have at least one common input port name, such as “A”. By selecting a common input port name, the corresponding input port for each of the selected base objects is identified. Once identified, the source leaf cells that have an output port that is coupled to the identified input ports can be identified, placed and aligned as desired.