Color television camera having at least two pick-up tubes
AssigneeU.S. Philips Corporation
InventorsJohannes Hendrikus Theodorus VAN Roosmalen, Pieter Zuidhof
Life of this patent
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Abstract
A color television camera having at least two pick-up tubes while the electromagnetic deflection and the electrostatic focussing is done in spatially removed places. A voltage source for supplying the anodes of the pick-up tubes is not stabilized but by affecting the deflection, registration of the line raster is maintained for voltage variations. Control of the voltage source offers the possibility for electronic "zooming" of the scene to be recorded.
Claims7
A color television camera circuit for use with a plurality of camera pick-up tubes each of said tubes having electro-magnetic deflection means for line and field deflection and electrostatic focusing means for a raster scanned electron beam, said deflection and focusing means providing a substantially spatially removed action for deflection and focusing within each tube, said circuit comprising line and field deflection circuits adapted to be coupled to said deflection means respectively, each of said deflection circuits comprising a deflection stage means for adjusting the raster registration of said respective tubes, a plurality of focusing circuits adapted to be coupled to said focusing means respectively, a voltage source, and a plurality of voltage setting stages for each of said tubes coupled between said source and the focusing means and deflection circuits for each tube respectively.
Dependencies are inferred from the claim text.