Clock oscillator detection
US11360203B2 · kind B2 · utility
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13References
20Claims
0Family size
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Key dates
| Filing date | Dec 13, 2019 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Jun 15, 2040 |
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.