Method and apparatus for eliminating image artifacts due to defective imager columns and rows
US7796172B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2004 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Jun 12, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a readout bus architecture having a first column, a readout means is coupled to a photodetector and configured to transfer charge from the photodetector. A select means is coupled to the photodetector and is configured to transfer charge from the photodetector. An address circuit is coupled to the first column through the select means and is configured to generate and decode an address and turn on the select means for the first column if the address matched the first column and if the address circuit received a corrected enable signal indicating that the first column is not defective. A correction circuit is coupled to the address circuit and is configured to generate the corrected enable signal indicating that the first column is not defective if the correction circuit determined that the first column is not defective.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.