System for producing chroma signals

Details System for producing chroma signals System for producing chroma signals

1975-09-12

1977-01-18

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 907

Patent

active

040042928

ABSTRACT:
Disclosed is a method and system for obtaining electronic chroma signals with a single scanning-type image device by optically producing a color multiplexed light signal using an arrangement of dichroic filter stripes. In the particular embodiment described a two-layer filter system is used to color-modulate external light which is then detected by an image pickup tube. The resulting time division multiplexed electronic signal from the pickup tube is converted by a decoder into a green color signal, and a single red-blue multiplexed signal, which is demultiplexed to produce red and blue color signals. The three primary color signals are capable of being encoded as standard NTSC color signals.

REFERENCES:
patent: 3560637 (1971-02-01), Takeuchi et al.
patent: 3647948 (1972-03-01), Eto et al.
patent: 3715466 (1973-02-01), Karato
patent: 3921206 (1975-11-01), Bohm et al.
patent: 3935588 (1976-01-01), Uno

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