Image pickup apparatus
US5995137A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 1996 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | May 23, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/67
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image pickup system including an image pickup device (4) for taking an image from an object (1) containing a periodic pattern and outputting an image signal (5), a zoom lens (2) for forming an object image on the image pickup device, a moire amount detection circuit (10) for detecting an amount of moire from the image signal (5), and an imaging magnification control circuit including a differentiating circuit (18) provided for setting a magnification of the zoom lens (2) and finely adjusting the magnification of the zoom lens (2) to allow the amount of moire detected by the moire amount detection circuit (10) to become below the setting value, a positive/negative determination circuit (20), a system controller (22), and a ROM (24).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.