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:
Nov. 20, 2001
Filed:
Jan. 20, 1999
Kenji Shimazaki, Hirakata, JP;
Abstract
A method for calculating a power consumption library on a gate level in a large-scale transistor circuit. The method includes: dividing a circuit network into a partial circuit network by a gate terminal of a transistor, calculating a relation of an input logical value to an output logical value in a partial circuit; calculating a relation of an output logical value to an input logical change in an output wiring between partial circuits, based on a partial circuit connection and a relation of an input logical value to an output logical value in a partial circuit; measuring a partial circuit power consumption by using an input logical change in each partial circuit; and regarding the sum of a power consumption at each partial circuit corresponding to an input logical change as a power consumption in a circuit network. The method also provides for reuse when a current path is the same in a circuit input logical change. The calculation also involves regarding the transistor as the same when a transistor with the same current characteristic is arrayed in the same order on the path even if a current path is different.