Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1992-01-03
1993-05-04
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358180, 358160, H04N 701
Patent
active
052086690
ABSTRACT:
A digital video signal is real-time converted from a conventional definition format, such as 525 lines, 60 field/s, 2:1 interlace, with a 4:3 aspect ratio and 720.times.486 active pixels, to a high definition format, such as 1125 lines, 60 field/s, 2:1 interlace, with a 16:9 aspect ratio and 1920.times.1035 active pixels by writing the pixels of the conventional definition fields to alternate field stores at the conventional definition format pixel rate; by formed intermediate frames in the high definition format by reading pixels from the field store which is not being written at the high definition pixel rate and adding background pixel data between the lines of the read pixels and between the fields of the read pixels; by translating the pixels of the intermediate image, if necessary; and by expanding the image so that the originating pixel data extends across the whole frame in at least one direction.
REFERENCES:
patent: 3497760 (1970-02-01), Kiesling
patent: 4703440 (1987-10-01), Birk et al.
patent: 5084765 (1992-01-01), Morita et al.
patent: 5087971 (1992-02-01), Sakata et al.
Frommer William S.
Kostak Victor R.
Sinderbrand Alvin
Sony Broadcast & Communications Limited
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