Accumulating charge from multiple imaging exposure periods
US9851245B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2012 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Aug 7, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/271
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments related to accumulating charge during multiple exposure periods in a time-of-flight depth camera are disclosed. For example, one embodiment provides a method including accumulating a first charge on a photodetector during a first exposure period for a first light pulse, transferring the first charge to a charge storage mechanism, accumulating a second charge during a second exposure period for the first light pulse, and transferring the second charge to the charge storage mechanism. The method further includes accumulating an additional first charge during a first exposure period for a second light pulse, adding the additional first charge to the first charge to form an updated first charge, accumulating an additional second charge on the photodetector for a second exposure period for the second light pulse, and adding the additional second charge to the second charge to form an updated second charge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.