Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1986-02-13
1988-09-27
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358150, H04N 704
Patent
active
047745762
ABSTRACT:
A method and apparatus for producing a video composite blanking signal which provides for selectively unblanking lines of video information which would normally be blanked according to a predetermined television standard. Each line in a frame of video data is assigned a line type based on its location in the sequence of lines of video information. Those lines that are in the vertical blanking period are assigned a different line type than those which are not. In response to unblanking selection data, line types of lines which are normally blanked are selectively modified to the line types of those lines which are not normally modified. The vertical interval blanking signal is produced only for those line types for line in the vertical blanking period.
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Ampex Corporation
Groody James J.
Harvey David E.
Krebs Robert E.
Lange Richard P.
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