External device power control during low power sleep mode without central processing unit intervention
US8645729B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2010 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Jul 15, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An integrated circuit device controls power up of an external device used for sensing a process variable independently of whether the integrated circuit device is in a low power sleep mode. Once the external device becomes operational the integrated device, even when still in the low power sleep mode, samples the process variable status of the external device. Low power timing circuits operational during the low power sleep mode control the power up of the external device and sampling of the process variable status thereof. After the sample of the process variable status is taken, the integrated circuit device may be brought out of the low power sleep mode to an operational mode when appropriate as determined from the sampled process variable status.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.