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US4672457A · kind A · utility
Inventor
Key dates
| Filing date | Sep 27, 1982 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Sep 27, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Control of illumination with illumination amplifier devices provides a basis for implementing scanner systems. Illumination amplifiers in closed illumination servo loops provide improved illumination control. An illumination control system provides precise control of camera operations for photographic and photoplotter applications. Illumination amplifier devices are used in conjunction with electronic control circuits to provide flexibility and precision in camera systems, reducing reliance on prior art mechanical devices. Illumination control circuits are presented in the form of digital gates and flip-flops and in the form of analog computational elements to provide illumination computer systems. In addition, a batch fabricated illumination computer arrangement is presented for improved implementation of illumination control systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.