Video panning system for widescreen television

Details Video panning system for widescreen television Video panning system for widescreen television

H - Electricity

04

N

350/34

H04N 7/08 (2006.01) H04N 7/015 (2006.01)

Patent

CA 2027336

RCA 85,762 Abstract of the Disclosure 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 4x3 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 4x3 aspect ratio receiver processes and displays the centered panning window information normally, unaffected by the panning operation at the widescreen signal source.

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