Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1975-02-18
1976-02-17
Britton, Howard W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
H04N 579
Patent
active
039394859
ABSTRACT:
In a system in which the polarity of the frequency converted chrominance signal or carrier is reversed during alternate lines of alternate fields recorded on alternate tracks on a recording medium and not reversed during the lines that make up the remaining alternate fields recorded in h-alignment on the remaining alternate tracks positioned in interleaving relationship with the first-mentioned tracks, logic-controlled switching means are provided to select the field intervals during which the plurality of the chrominance subcarrier will be reversed in alternate lines. The same logic circuits can be used to control the switching during both recording and reproducing so that the alternate plurality reversal of the chrominance subcarrier will take place during the proper fields during reproduction of the recorded signals. Furthermore, the flip-flop that controls the switching circuit to reverse polarity of the chrominance signal or carrier is, itself, controlled to start always in the correct polarity in those field intervals when it is operative.
REFERENCES:
patent: 3821787 (1974-06-01), Kihara
Amari Shinji
Masuda Takashi
Britton Howard W.
Eslinger Lewis H.
Martin John C.
Sinderbrand Alvin
Sony Corporation
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