Image sensing apparatus
US5343246A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Feb 25, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/72
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensing apparatus comprises a light measuring circuit for performing a weighted light measurement on the basis of a light measuring area set in a predetermined position within an image sensing plane, a detecting circuit for detecting the levels of the luminance signals obtained from a plurality of detecting areas set within the image sensing plane, a discriminating circuit for discriminating the state of an object being photographed on the basis of the output of the detecting circuit, a compensation circuit for compensating a light measurement signal produced by the light measuring circuit in a backlighting photographic state, and a compression circuit for controlling a compression point and/or a compression rate of a high-luminance signal in accordance with the amount of compression performed by the compression circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.