Television picture size altering apparatus

Details Television picture size altering apparatus Television picture size altering apparatus

1976-12-27

1979-01-09

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358160, H04N 522, H04N 514

Patent

active

041341287

ABSTRACT:
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.

REFERENCES:
patent: 3571494 (1971-03-01), Law
patent: 3683111 (1972-08-01), Southworth
patent: 3946432 (1976-03-01), Goldberg et al.
patent: 4063280 (1977-12-01), Hattori et al.

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