Modeling metastability in circuit design
US7139988B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2004 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Feb 1, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2119/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer program (100, 200) encoded in a computer-programmable medium, and for causing a computer to perform circuit design. The code causes the computer to perform a set of steps. The steps comprise describing a first set of circuitry and describing a second set of circuitry. The steps also comprise describing a digital signal for passing from the first set of circuitry to the second set of circuitry and detecting (230) transitions of the digital signal with respect to a timing constraint (240) of at least a portion of the second set of circuitry. Lastly, the steps comprise, responsive to detecting metastability with respect to timing of a transition of the digital signal relative to the timing constraint of at least a portion of the second set of circuitry, forcing (160) the digital signal to a random value and passing the random value to the second set of circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.