Method and apparatus for video signal resolution enhancement

Details Method and apparatus for video signal resolution enhancement Method and apparatus for video signal resolution enhancement

1980-02-22

1981-11-17

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358242, H04N 324, H04N 514

Patent

active

043014739

ABSTRACT:
The resolution of relatively low resolution type information signals is enhanced by inserting black level signals between adjacent picture elements at predetermined positions in each odd horizontal scanning line, and inserting black level signals between adjacent picture elements at different predetermined positions in even horizontal scanning lines. The black level signals are inserted by extinguishing a CRT beam in accordance with phase displaced clock signal trains, preferably phase displaced by 180.degree..

REFERENCES:
patent: 2798114 (1957-07-01), Schlesinger
patent: 4228459 (1980-10-01), Smith

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