Programmable color enable and sequencing system for secam

Details Programmable color enable and sequencing system for secam Programmable color enable and sequencing system for secam

1976-08-04

1979-04-24

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 27, H04N 949

Patent

active

041515510

ABSTRACT:
A programmable color enable and sequencing system for a sequential color and memory television system is provided. An output for sequencing the sequential colors of the SECAM system in a decoder and enabling color if chrominance is present is generated by statistically detecting the presence of color information and, using the same statistical detector, provides for synchronization of the color sequence circuits. The statistical detection uses FM information provided during the vertical interval and/or information contained in the color subcarrier of the composite SECAM signal. Additionally, the system includes means for providing a preprogrammed color enable for each one-half line defined according to user needs or system standards for enabling instantaneous decisions about which lines of the composite signal are color. Decisions as to whether or not the overall picture is color are made by the statistical detector.

REFERENCES:
patent: 3162838 (1964-12-01), Sauvanet
patent: 3919471 (1975-11-01), Spiessbach
patent: 3919473 (1975-11-01), Cotter
patent: 3993864 (1976-11-01), Pye et al.

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