Process and device for the instantaneous display of a countrysid

Details Process and device for the instantaneous display of a countrysid Process and device for the instantaneous display of a countrysid

1978-09-19

1980-08-12

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358223, 343 5PC, H04N 718

Patent

active

042176077

ABSTRACT:
A process for the instantaneous display of a countryside scanned by a camera apparatus of the single line scanning type, comprising charging the target of a double gun tube, acting as an intermediate information support between the single line scanning apparatus and a television receiver, by a first gun of the double gun tube along a writing line, in the effective rotation of the single line scanning device in the course of one period of the scanning video signal, said writing line moving over the target in accordance with a writing picture scanning the slope of which depends on the ratio V/H of the support of the camera apparatus, erasing the lines already written and stored so as to define on the target a moving rectangle which is not charged, in memory reading the space of the target which is charged in memory by a scanning effected by the second gun of the double gun tube at the television rate, the beginning and the end of the reading corresponding to two lines which move over the target in accordance with the reading picture scanning and are disposed respectively on each side of said moving rectangle, and sending the modulated current of the reading of the target, which constitutes the television video signal, to the television receiver.

REFERENCES:
patent: 2668190 (1954-02-01), Sziklai
patent: 2911876 (1959-11-01), Willey

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