Incremental circuit re-simulation system
US7571086B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2005 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Jul 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/33
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A netlist description of a circuit is processed to classify some signals of the circuit as essential signals and to classify all other signals of the circuit as non-essential signals. Thereafter when simulating behavior of the entire circuit in response to input signals supplied over some time interval, a simulator saves first simulation data representing behavior of the circuit's essential signals during the time interval. Thereafter the simulator is programmed to re-simulate behavior of only a selected subcircuit of the circuit during only a selected subinterval of the full time interval based on behavior of essential signals described by the first simulation data. During the re-simulation, the simulator saves second simulation data representing behavior of both essential and non-essential signals of the subcircuit to provide a more complete picture of the behavior of the selected subcircuit during the selected subinterval. Before the initial full-circuit simulation, each signal is classified as an essential signal when its behavior during the full-circuit simulation must be represented by the first simulation data in order to provide sufficient information to program the simulat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.