Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1978-12-01
1980-12-02
Richardson, Robert L.
Facsimile and static presentation processing
Static presentation processing
Attribute control
H04N 902
Patent
active
042374820
ABSTRACT:
A CRT system uses a time delay element in one deflection circuit to enable the production of reentrant Lissajous figures from signals derived from a single source. Its high voltage power supply operates at frequencies beyond the audio range and produces wave forms of low harmonic content at relatively low voltage levels thus providing quiet operation with little or no electromagnetic interference or x-ray emission problems. A secondary deflection yoke acting on the beam before the beam enters the effective region of the primary sweep deflection yoke enables control of the color tone of the image presented. Individual gain and timing controls produce variations in the display to satisfy the whim of the viewer. A gate-controlled blanking signal produces a stroboscopic effect at the display while a second form of intensity modulation produces scintillation of the displayed imagery. A master panel control enables the viewer to command a display of infinite variety and hue to satisfy the most demanding aesthetic sensibilities.
REFERENCES:
patent: 3627912 (1971-12-01), Hearn
patent: 3940789 (1976-02-01), Kratz et al.
Duffy James F.
Richardson Robert L.
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