Binary switching video amplifier
AssigneeRedactron Corporation
InventorFrancis C. Marino
Life of this patent
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Abstract
A video amplifier for driving an electron beam intensity controlling electrode of a cathode ray tube comprises at least one solid state high speed binary switch which is connected via a coupling capacitor to the controlling electrode while a D.C. restoration means eliminates the chance of any droop in D.C. level of the signal fed to the controlling electrode.
Claims12
A video amplifier for driving an electron beam intensity controlling electrode of a cathode ray tube which operates at a first set of voltage levels comprising a first solid state high speed binary switch means operating at a second set of voltage levels smaller than said first set for switching between first and second conductive states, said binary switch means having an input terminal for receiving a binary signal and an output terminal for transmitting a binary signal, a first coupling capacitor having a first terminal connected to said output terminal and a second terminal connected to the electrode of the cathode ray tube and a D.C. restoration means connected to the second terminal of said first coupling capacitor.
A video amplifier for driving an electron beam controlling electrode of a cathode ray tube which operates at a first set of voltage levels comprising a first solid state high speed binary switch means operating at a second set of voltage levels smaller than said first set for switching between first and second conductive states, said binary switch means having an input terminal for receiving a binary signal and an output terminal for transmitting a binary signal, a second solid state high speed binary switch means operating at the second set of voltage levels for switching between first and second conductive states, said second binary switch means having an input terminal for receiving another binary signal and an output terminal for transmitting the other binary signal amplified, a first coupling capacitor having a first terminal and a second terminal connected to the electrode of the cathode ray tube, a first selectively operable signal attenuator means connecting the output terminal of said first binary switch means to said first terminal of said coupling capacitor and a second selectively operable signal attenuator means connecting the output terminal of said second binary switch means to said first terminal of said first coupling capacitor.
A video amplifier for driving a cathode ray tube having cathode and control grid electrodes operating at a first set of voltage levels, said amplifier comprising a first solid state high speed binary switch means operating at a second set of voltage levels smaller than said first set for switching between first and second conductive states, said binary switch means having an input terminal for receiving a binary signal and an output terminal for transmitting a binary signal, a first coupling capacitor having a first terminal connected to said output terminal and a second terminal connected to one of said electrodes, a second solid state high speed binary switch means operating at the second set of voltage levels, said second binary switch means having an input terminal for receiving another binary signal and an output terminal for transmitting the other binary signal amplified, and a second coupling capacitor having a first terminal connected to the output terminal of said second binary switch means and a second terminal connected to the other of said electrodes.
Dependencies are inferred from the claim text.