Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-11-28
1991-01-29
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358138, 358160, 358242, H04N 701
Patent
active
049890921
ABSTRACT:
In a picture display device suitable for receiving and processing an incoming video signal which comprises horizontally scanned picture information and for displaying pictures which are composed of fields each of which comprises a given number of lines, a scanning section for generating line and field scanning signals for forming the lines and fields, respectively, is adapted to scan the lines in the vertical direction, a number of vertical lines constituting a field and the vertical line frequency being many times higher, at least 200 times, than the horizontal field frequency. A video signal processing section for processing the picture information which is present in the video signal comprises a scan direction transposition circuit for receiving the picture information and for sequentially assigning picture information to elements of the vertically scanned lines.
REFERENCES:
patent: 2960566 (1960-11-01), Athey
patent: 3342937 (1967-09-01), Deutsch
patent: 4449143 (1984-05-01), Dischert
patent: 4451852 (1984-05-01), Masuda
patent: 4472732 (1984-09-01), Bennett
patent: 4672449 (1987-06-01), Kraus
Doyle Terence
Lammers Matheus J. G.
Vriens Leendert
Britton Howard W.
Marion Michael E.
U.S. Philips Corporation
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