Photographing operation control device
US5940646A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 11, 1996 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Mar 11, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00249
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A photographing operation control device having an electro-developing recording medium to electronically develop an image formed thereon. The developing or photographing operation of the electro-developing recording medium is performed during a period when a recording medium activating signal is outputted. An exposure period for which the electro-developing recording medium is exposed is set based on a measured photometry value. When the exposure period is longer than a standard period for which the recording medium activating signal is outputted, the recording signal activating signal is outputted as pulse signals for a period equal to the exposure period. The operation period for which the pulse signals are outputted is set in such a manner that a total amount of the output period of the recording medium activating signal is equal to the standard period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.