State dependent power modeling
US5838579A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Oct 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2119/06
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for modeling the power consumed by a logic cell in a computer controlled power estimation process estimating the power consumed for an integrated circuit represented by logic cells and connections between cells. The present invention models power consumption within a logic cell associated with a particular pin (e.g., input, output, bidirectional, internal) based on a prescribed condition of the state of signals that exist contemporaneously with a signal transition on the particular pin. This is referred to as state dependent power modeling. A different power consumption value can be provided for each different modeled state. The logic cells and the power consumption model for them are stored in a logic cell "library" within the computer system. State dependent power modeling of the present invention allows library designers to specify a different set of power values depending on the condition of one or more pins of the library cell (e.g., the library's representation of the logic cell). Specifically, library designers are allowed to specify a "when" condition with their power tables. To take advantage of the state dependent power modeling, library designers can …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.