System and method for sensor failure detection
US8736684B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2013 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Feb 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/69
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A novel image sensor includes a pixel array, a row control circuit, a test signal injection circuit, a sampling circuit, an image processing circuit, a comparison circuit, and a control circuit. In a particular embodiment, the test signal injection circuit injects test signals into the pixel array, the sampling circuit acquires pixel data from the pixel array, and the comparison circuit compares the pixel data with the test signals. If the pixel data does not correspond to the test signals, the comparison circuit outputs an error signal. Additional comparison circuits are provided to detect defects in the control circuitry of an image sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.