Saving and restoring scan states
US12306249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2024 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Jan 5, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A wireless device that can save and restore state information is disclosed. The wireless device stores state information in non-persistent registers during an active power state, routes the state information from the non-persistent registers to a non-volatile memory, via a boundary scan chain using one or more test signals, based on an indication that the wireless device is to enter a low-power state, and enters the low-power state after the state information is stored in the non-volatile memory. The wireless device may remove power from the processor, the non-persistent registers, the non-volatile memory, and one or more other portions of the wireless device during the low-power state. The wireless device may return to the active power state after a period of time and restore the state information to the non-persistent registers upon returning to the active power state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.