Television signal converting apparatus

Details Television signal converting apparatus Television signal converting apparatus

1992-12-29

1994-08-30

Kostak, Victor R.

Television

Format conversion

Conversion between standards with different aspect ratios

348458, H04N 701

Patent

active

053432991

ABSTRACT:
An apparatus for converting a first television signal into a second television signal of a fewer number of horizontal scanning lines than in the first television signal, in which a horizontal scanning line signal corresponding to the horizontal scanning line of the second television signal is formed from horizontal scanning line signals corresponding to the horizontal scanning lines of an even number, positioned mutually close on the image plane, among the plural horizontal scanning lines of the first television signal, while a horizontal scanning line signal corresponding to the horizontal scanning line of the second television signal is formed from horizontal scanning line signals corresponding to the horizontal scanning lines of an odd number, positioned mutually close on the image plane, among the plural horizontal scanning lines of the first television signal, and these formed signals are alternately selected by every vertical synchronization period. Thus a precise and stable conversion of television signals is realized without deterioration in the image quality.

REFERENCES:
patent: 4766494 (1988-08-01), Doyle
patent: 5029001 (1991-07-01), Tanaka

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