SPAD array with gated histogram construction
US11415679B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2020 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Jan 26, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/959
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensing device includes a first array of sensing elements, which output a signal indicative of a time of incidence of a single photon on the sensing element. A second array of processing circuits are coupled respectively to the sensing elements and comprise a gating generator, which variably sets a start time of the gating interval for each sensing element within each acquisition period, and a memory, which records the time of incidence of the single photon on each sensing element in each acquisition period. A controller sets, in each of at least some of the acquisition periods, different, respective gating intervals for different ones of the sensing elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.