Adaptive electronic zoom control
US6704048B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1998 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Aug 27, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/443
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adaptive electronic zoom system is described which includes an electronic camera having an image sensor with pixels, a controller communicating with an address generator to select in response to an external input or feedback signals from the electronic camera a subset of pixels from the pixels of the image sensor, the subset of pixels defining a zoom area. The zoom area can be located at any position within the image sensor area. The zoom ratio/pan/tilt of the zoom area is automatically adjusted so as to maintain the location of the zoom area entirely within the image sensor area. The adaptive electronic zoom system is particularly suited for set-top boxes for video conferencing applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.