Television picture size altering apparatus

Details Television picture size altering apparatus Television picture size altering apparatus

H - Electricity

04

N

350/56

H04N 5/937 (2006.01) H04N 3/223 (2006.01) H04N 5/073 (2006.01) H04N 5/262 (2006.01) H04N 5/45 (2006.01)

Patent

CA 1087295

Abstract of the Disclosure The size of a color television picture field is changed without changing the size of the raster. This is achieved in an apparatus that includes means responsive to a field of television video signals for sampling same and providing a predetermined number of samples of television video signals per line and a predetermined number of lines per field and means responsive to the predetermined number of samples per line and lines per field for providing a full field of television video signals. Size reduction is accomplished by causing the first mentioned means to skip samples provided at the output thereof in groups of N, where N is the number of samples in a color subcarrier cycle, and to skip line pairs of the field. -1-

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