Method and apparatus for recording optical information in a photoelectric transducer controlled by a sensed condition thereof
US5408341A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1994 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Mar 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C13/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system has a first electrode, a second electrode, a photosensitive member located between the first and second electrodes, a recording member located between the first and second electrodes, and an optical shutter. In this system, light having information to be recorded is applied to the photosensitive member. The light information is recorded on the recording member. An exposure amount of the light with respect to the photosensitive member is set by setting a time during which the optical shutter remains open. A drive voltage of a predetermined variation is applied between the first and second electrodes during the recording of the light information on the recording member. The predetermined voltage between the first and second electrodes is controlled in response to a sensed intensity of reference light which passes through the photo-modulation member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.