Picture tube with video output, picture taking system utilizing

Details Picture tube with video output, picture taking system utilizing Picture tube with video output, picture taking system utilizing

1985-09-09

1987-10-20

Rubinson, Gene Z.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

250213VT, 250213, 250213R, G03C 517

Patent

active

047017929

ABSTRACT:
A picture tube designed for providing an electrical output includes a vacuum enclosure provided with a window transparent to the radiation to be converted to an electrical signal and a window transparent to a scanning light beam. The enclosure houses an assembly including a screen and a photocathode having a mosaic of picture storage elements, and an electron-emissive cathode for establishing a reference potential on the photocathode, an anode for collecting signal electrons, a field grid and electron optics. An external light source is used to provide a light beam for scanning the photocathode.

REFERENCES:
patent: 2747132 (1956-05-01), Sheldon
patent: 3716747 (1973-02-01), Patel
patent: 3975637 (1976-08-01), Ikedo et al.
patent: 4208577 (1980-06-01), Wang
patent: 4246607 (1981-01-01), Vijverberg
patent: 4268750 (1981-05-01), Cowart
patent: 4471378 (1984-09-01), Ng
patent: 4521808 (1985-06-01), Ong et al.
patent: 4597017 (1986-06-01), Johnson et al.

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