Bundling night vision and other driver assistance systems (DAS) using near infra red (NIR) illumination and a rolling shutter
US9179072B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2011 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Jan 14, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/531
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system mountable in a motor vehicle. The system includes a camera and a processor configured to receive image data from the camera. The camera includes a rolling shutter configured to capture the image data during a frame period and to scan and to read the image data into multiple image frames. A near infra-red illuminator may be configured to provide a near infra-red illumination cone in the field of view of the camera. The near infrared illumination oscillates with an illumination period. A synchronization mechanism may be configured to synchronize the illumination period to the frame period of the rolling shutter. The frame period may be selected so that the synchronization mechanism provides a spatial profile of the near infra-red illumination cone which may be substantially aligned vertically to a specific region, e.g. near the center of the image frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.