Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-06-08
1991-07-16
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 12, H04N 704
Patent
active
050329073
ABSTRACT:
A widescreen television system compatible with a lesser aspect ratio standard television system employs a panning operation using a circular-shift method to keep a 4.times.3 aspect ratio panning window (area of primary interest) centered for display purposes. Illustratively, when the panning window is shifted left by a given amount at the widescreen signal source, a corresponding portion of right sidepanel image information is "cut" and "pasted" alongside left sidepanel image information so that the panning window remains substantially centered with respect to side panel information. A reverse cut-and-paste operation is performed at a widescreen receiver to restore the original widescreen spatial format. A standard 4.times.3 aspect ratio receiver processes and displays the centered panning window information normally, unaffected by the panning operation at the widescreen signal source.
REFERENCES:
patent: 4513324 (1985-04-01), Poetsch et al.
patent: 4581640 (1986-04-01), Cole
patent: 4651208 (1987-03-01), Rhodes et al.
patent: 4730215 (1988-03-01), Jose et al.
patent: 4943856 (1990-07-01), Bakhmutsky et al.
"Extended Definition Television--The MAC Approach", by M. D. Windham et al., Tenth International Broadcasting Convention, pp. 94-102, Brighton, 1984, published by IEEE.
"Decomposition and Recombination of a Wide Aspect Ratio Image for ENTSC Two-Channel Television", by A. P. Cavallerano, IEEE Transactions on Consumer Electronics, vol. CE-33, No. 3, Aug. 1987, pp. 162-172.
General Electric Company
Herrmann Eric P.
Kostak Victor R.
Kurdyla Ronald H.
Tripoli Joseph S.
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