Light communications receiver and decoder with time to digital converters
US10132921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2016 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | May 10, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04F10/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure includes a method that includes generating a decoded output signal that corresponds to reflected light received by a plurality of single photon avalanche diodes (SPAD) by removing ambient light from a plurality of SPAD array output signals. The removing of ambient light including synchronizing the plurality of SPAD array output signals by using a plurality of parallel time to digital converters, each time to digital converter outputting a synchronized SPAD array output signal, determining a plurality of flexible thresholds for each one of the synchronized SPAD array output signals, comparing current data on the synchronized SPAD array output signals with the respective ones of the flexible threshold in a filter, and outputting the first output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.