Time-alignment of motion detection signals using buffers
US9933517B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2017 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Nov 3, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/886
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a general aspect, a filter time aligns time varying RF-motion data. In some aspects, a method includes loading a first set of input signals (SISs) into an interference buffer over a first time period. The first SISs is based on a first set of wireless signals received by a wireless communication device (WCD) after being transmitted through a space. The method includes using the first SISs to determine an interference level. The method includes: in response to determining the interference level is below a threshold, executing a motion detection process in a second, subsequent time period over which a second SISs is loaded into the interference buffer. The motion detection process, using a subset of the first SISs, detects motion of an object in the space. The second SISs are based on a second set of wireless signals received by the WCD after being transmitted through the space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.