Telecinema system using electroluminescent diodes

Details Telecinema system using electroluminescent diodes Telecinema system using electroluminescent diodes

1974-04-22

1976-03-09

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

178 72, H04N 584

Patent

active

039435598

ABSTRACT:
A cinematographic film to be reproduced by television is driven at constant speed in synchronism with the sweep cycle of one or more camera tubes each positioned to pick up images projected upon a receiving surface thereof whose luminous persistence equals at least a sweep cycle. The film is periodically transluminated, during the retrace phase of the scanning beam, by a light pulse emitted by an electroluminescent diode -- or by a cluster of such diodes operating on different wavelengths -- defining a quasi-pinpoint light source, the diode being excited by an energizing pulse whose length does not exceed the duration of a line scan of the camera tube.

REFERENCES:
patent: 2834832 (1958-05-01), Somers
patent: 3584149 (1971-06-01), Flory
patent: 3743771 (1973-07-01), Ohta et al.
patent: 3816654 (1974-06-01), Brightman

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