Clock oscillator detection
US10557932B1 · kind B1 · utility
1Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2018 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Nov 28, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1113
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Motion-detection systems are often used to detect presence of humans. Such motion-detection systems are often based on passive infrared (PIR) sensors. Unfortunately, such detection systems are unable to reliably distinguish between humans and other entities such as animals and moving heat sources. To address this issue, it is proposed to detect a presence of real time clock (RTC) devices in addition to detecting the heat sources to better determine whether a detected entity is a human.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.