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:
Feb. 19, 2008
Filed:
Jun. 28, 2004
Tathagato Rai Dastidar, Bangalore, IN;
Partha Ray, Bangalore, IN;
Tathagato Rai Dastidar, Bangalore, IN;
Partha Ray, Bangalore, IN;
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A method for device level simulation of a circuit modeled by a set of CCR graphs, a computer system programmed to perform such a method, and a computer readable medium which stores code for implementing such a method. Typically, the circuit includes MOS transistors having unknown gate potentials, each CCR graph includes a top rail, and a bottom rail, and variable nodes, each of the transistors having unknown gate potential is modeled in the CCR graphs as a selectable resistor having a selected one of a first resistance and a much larger second resistance, and the method includes the steps of determining potentials at variable nodes of one of the CCR graphs with each selectable resistor of the graph having its first resistance (and also with each selectable resistor of the graph having its second resistance) without determining effective resistances between the variable nodes of the graph and the top rail or bottom rail.