Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1976-06-14
1978-01-17
Wilbur, Maynard R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358165, 315384, 250333, H04N 533
Patent
active
040695026
ABSTRACT:
A method of operating a pyroelectric camera tube having a normally provided electron beam emitting cathode and control grid G.sub.1 controlling the electron beam, and a gas in the interior space of the tube by applying positively-going pulses to the grid G.sub.1 during the period of the normally applied line blanking pulses. A circuit for producing the positively-going pulses is also disclosed which have the effect of increasing the target pedestal potential.
REFERENCES:
patent: 3812396 (1974-05-01), Crowell
patent: 3946232 (1976-03-01), Harmer
Banks Peter Baldwin
Nelson Peter David
Blum T. M.
English Electric Valve Company Limited
Wilbur Maynard R.
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