Electronic camera
US6784938B1 · kind B1 · utility
7Cited by
12References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1998 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Oct 5, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/76
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic camera of the present invention includes a CCD, a diaphragm, an EEPROM, and a CPU. The CCD has a condenser micro-lens opposed to a light receptor. The diameter of the diaphragm is variable in relation to a plurality of f-numbers. In the EEPROM, data items of outputs of the CCD associated with the plurality of f-numbers or ratios of the outputs are stored in advance. The CPU calculates an exposure time according to an output of the CCD associated with a given f-number, controls exposure, and corrects an exposure time according to data stored in the EEPROM during recording.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.