Color television receiver

Details Color television receiver Color television receiver

1978-12-22

1980-11-04

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 924

Patent

active

042323320

ABSTRACT:
A control system for a beam index cathode ray tube momentarily gates or turns off all beam current at the transition from one color modulating signal to another. The resulting dip in the electron beam density, as it scans across an index phosphor stripe located between adjacent color phosphor areas, produces a substantially corresponding dip in the index signal derived from excitation of the index phosphor stripe by the electron beam. The dip in the index signal is detectable as an indication of the phase of the index signal substantially independent of differences in the amplitude of the electron beam current.

REFERENCES:
patent: 3234324 (1966-02-01), Mutschler
patent: 3748375 (1973-07-01), Sunstein
patent: 3881182 (1975-04-01), Archakov et al.

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