Dynamic voltage controller
US7418358B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2005 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Jan 13, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processing apparatus uses dynamic scaling of voltage (DVS) and includes a controller. This is particularly applicable to software defined radio (SDR), but may also be for other reconfigurable electronic systems. The controller includes a plurality of processing resources at least some of which have controllable supply voltage and/or frequency. The controller schedules operations on the resources, at least some of which have a predetermined deadline by which the operation must be performed, determines a voltage and/or frequency profile for an operation having a deadline, and instructs the resources to perform operations according to the schedule and the profile. The profile is determined by a voltage frequency profile calculator, for a processing resource for a predetermined task. The calculator determines metrics characterizing a probability distribution of cycle counts for completing the task using the resource, and determines a voltage profile for the next task depending on the metrics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.