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. 07, 1995
Filed:
Aug. 04, 1992
Takahiro Tani, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A timing simulation system has a layout pattern data storage portion, a data extracting portion, a process parameter storage portion, a gain coefficient calculating portion, an attendant capacitance supply portion, and a timing simulation executing portion. The gain coefficient calculating portion and the attendant capacitance calculating portion calculate gain coefficients and attendant capacitances peculiar to elements and wires from the circuit connection data extracted from layout pattern data of a logic circuit, and the gain coefficient supply portion and the attendant capacitance supply portion set the gain coefficients and the attendant capacitances. The timing simulation executing portion calculates the total load capacitance and the total gain coefficient with respect to a group of equipotential wires in which the signal value changes, calculates the transition time of the signal value on the wires based on the total load capacitance and the total gain coefficient, and executes timing simulation while using the transition time as a signal propagation delay time.