Imaging systems with real-time digital testing capabilities
US9843794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2015 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Dec 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging system with real-time digital testing capabilities verifies the functionality of image processing circuitry used to process pixel data signals read out from a pixel array during imaging operations. Image processing circuitry may process a data frame read from an imaging array that includes multiple regions of imaging and non-imaging data. Digital test patterns may be generated to test the functionality of specific image processing blocks. Test patterns may correspond to or represent imaging data or non-imaging data from regions of the output readout frame. A checksum generator generates a test pattern checksum for output of a subset of the image processing blocks that were provided with a given test pattern. The test pattern checksum may be compared to a predetermined checksum of the output of properly functioning image processing blocks provided with test patterns equivalent to the given test pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.