Apparatus and method for waking up a processor
US12271245B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2021 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Oct 17, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for waking up a main processor (MP) in a low power or ultra-low power device preferably includes the MP, and a sub-processor (SP) that utilizes less power than the MP to monitor ambient conditions than the MP, and may be internalized in the MP. The MP and SP can remain in a sleep mode while an interrupt sensor monitors for changes in the ambient environment. A sensor is preferably an interrupt-type sensor, as opposed to polling-type sensors conventionally used to detect ambient changes. The MP and SP may remain in sleep mode, as a low-power or an ultra-low power interrupt sensor operates with the SP being in sleep mode, and awakens the SP via an interrupt indicating a detected change. The SP then wakes the MP after comparing data from the interrupt sensor with values in storage or with another sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.