Time of flight apparatuses and an illumination source
US10101453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2015 |
| Grant date | Oct 16, 2018 |
| Priority date | — |
| Expiry date | Jul 29, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a detector circuit configured to receive a modulated electromagnetic wave signal from an illumination source and to provide a detection signal having a frequency dependent on a modulation frequency of the modulated electromagnetic wave signal. The apparatus further includes a reference circuit configured to generate a reference signal based on the detection signal. The apparatus further includes a sensor circuit configured to generate based on the reference signal a sensor signal based on reflected modulated electromagnetic waves emitted by the illumination source and reflected by an object. The apparatus further includes a processing circuit configured to determine distance information related to the object based on the sensor signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.