Video signal processing apparatus having interpolators switchabl

Details Video signal processing apparatus having interpolators switchabl Video signal processing apparatus having interpolators switchabl

1985-04-08

1987-04-21

Shepperd, John W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, H04N 974, H04N 5262

Patent

active

046600817

ABSTRACT:
A video signal processing arrangement comprises an input (1) for receiving an input video signal and output (2) at which the processed signal is produced. The arrangement includes a vertical filter (3), a horizontal filter (4), a vertical interpolator (5) a horizontal interpolator (6), a field store (7) and a control circuit (8). The control circuit (8) produces control signals which are fed via paths (20,21,22) to the vertical and horizontal interpolators (5,6) and the field store (7) to re-configure their positions in the signal processing chain in dependence on whether the television picture represented by the input video signal is to be squeezed or zoomed.

REFERENCES:
patent: 4282546 (1981-08-01), Reitmeier
patent: 4402012 (1983-08-01), Knight
patent: 4422095 (1983-12-01), Hosoya
patent: 4538178 (1985-08-01), Bolger

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