Electronic device and drop warning method
US10204504B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2017 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Dec 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P15/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic device including a signal processing circuit, an acceleration sensor, and an edge sensor is provided. The electronic device has a device body. The signal processing circuit operates in a sleep mode. The acceleration sensor senses an acceleration variation of the device body to generate an acceleration sensing signal. The acceleration sensor determines whether the acceleration sensing signal is continuously lower than an acceleration threshold for a preset length of time to wake up the signal processing circuit. When the acceleration sensor wakes up the signal processing circuit, the signal processor enables the edge sensor. The edge sensor senses a deformation variation of the device body to generate at least one deformation sensing signal. The signal processing circuit analyzes the deformation sensing signal to determine whether a drop event of the device body occurs. In addition, a drop warning method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.