Method of estimating time delay
US6516454B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2000 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jan 28, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/33
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of accurately estimating a time delay caused by a target cell where a target supply voltage is applied to the cell. Time delays, caused by a representative cell, are represented as a function of supply voltages applied to the cell, thereby deriving an approximation function k1. An interpolation function k2 is derived from the approximation function k1 by reference to two points P1 and P2. P1 indicates a time delay T1 caused by the target cell where a supply voltage V1 is applied thereto, while P2 indicates a time delay T2 caused by the target cell where a different supply voltage V2 is applied thereto. Thus, the interpolation function k2 represents the time delays caused by the target cell as a function of supply voltages. And by using this interpolation function k2, a time delay caused by the target cell at the target supply voltage can be estimated accurately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.