Data processing: structural design – modeling – simulation – and em – Modeling by mathematical expression
Reexamination Certificate
2007-11-20
2007-11-20
Rodriguez, Paul (Department: 2123)
Data processing: structural design, modeling, simulation, and em
Modeling by mathematical expression
C703S013000
Reexamination Certificate
active
10683925
ABSTRACT:
A modeling technique that extends the formalism of finite state machines to analog and mixed-signal systems is proposed. The intended use of this technique is to generate continuous mixed-signal models from a state diagram description. Analog equations can be associated with the states of a finite state machine. A state vector ensures analog continuity between state equations during transitions. Specifically, the state vector components are weight coefficients that vary continuously between 0 and 1, thereby allowing the different state equations of an analog variable to be enabled or disabled depending on which state is active. The state vector formalism supports concurrency (i.e. several states being active at the same time) as well as interrupted transitions (i.e. transitions occurring before the transition time of a previous transition has elapsed). The profile and duration of a transition can be set, thereby allowing a user to accurately match the real behavior of a system as well as aid the simulator to converge.
REFERENCES:
patent: 2002/0167544 (2002-11-01), Raghavan et al.
Panos J. Antsaklis, “Special Issue on Hybrid Systems: Theory and Application A Brief Introduction to the Theory and Applications of Hybrid Systems”, Jul. 200, Proceedings of the IEEE, vol. 88, No. 7, pp. 879-887.
Ernst Christen et al.; “VHDL-AMS—A Hardware Description Language for Analog and Mixed-Signal Applications”, Oct. 1999, IEEE Transactions on Circuits and Systems-II: Analog and Digital Signal Processing, vol. 46, No. 10, pp. 1263-1272.
Tom J. Kazmierski; “Fuzzy-logic digita-analogue interfaces for accurate mixed-signal simulation”, 1998, Proceedings of the conference on Design, automation and test in Europe, pp. 941-944.
Bever Hoffman & Harms LLP
Guill Russ
Harms Jeanette S.
Rodriguez Paul
Synopsys Inc.
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