Electronic device with modulated light flash operation for rolling shutter image sensor
US10250789B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2017 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Mar 5, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2013/0081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic device (100) includes a modulated light projector (119) and an electronic rolling shutter (ERS) imaging camera (1302) having a sensor array (1306) with a set of pixel rows. The electronic device includes a controller (1304) to control the modulated light projector (119) to project a modulated light flash (1608, 1810, 2010) during capture of a first image frame (1606, 1806, 2006) by the sensor array. The controller is to initiate the modulated light flash while each pixel row of the set is exposed for gathering light and to terminate the modulated light flash before a pixel row of the set is exposed for capture of a next image frame by the sensor array. The electronic device further includes a processor (802) to determine modulated light image data (1320) based on the first image frame. The controller also may control the modulated light projector to refrain from projecting the modulated light flash during capture of a second image frame (1602, 1612, 1802, 1816, 2002, 2018), adjacent to the first image frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.