Video camera having deviating means for improving resolution
US6249312A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1997 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Nov 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/674
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The video camera comprises a detector having a two-dimensional matrix of photosensitive sites that accumulate charge, the sites being placed in an image plane of an optical system and being connected to a circuit for periodically transferring the accumulated charges at a determined frequency. A deviation member is interposed on the path of light towards the matrix and enables said path to be deflected about a nominal direction. A unit for periodically controlling the deviation means causes the image to be deviated in two dimensions, in a first determined cycle each time through a determined fraction of the pitch step size so as to perform space oversampling, and, in a second cycle, each time through a full pitch step size, which second cycle is a multiple of the first. A processor unit calculates the gain differences and the response offsets between the sites by performing comparisons therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.