Analog-to-digital converter for camera
US4702585A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1986 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Dec 9, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/091
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is disclosed an analog-to-digital converter for a camera which is arranged to convert an analog signal of an exposure information, particularly a photometric output of a light measuring circuit into a corresponding digital signal. The analog-to-digital converter according to the present invention includes means for dividing a photometric output signal of a light measuring circuit, which is fed into an analog-to-digital converting circuit, into predetermined areas, means for level-shifting the respective ones of the divided areas of said photometric output signal, and means for feeding the level-shifted photometric output in the respective areas, separately, into the analog-to-digital converter circuit, whereby digital values are obtained, separately, in connection with the respective ones of the divided areas of the photometric output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.