Picture element number converter

Details Picture element number converter Picture element number converter

1990-11-02

1992-02-18

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358140, 358 22, 358 11, 382 47, H04N 3223, H04N 701

Patent

active

050898930

ABSTRACT:
An original picture of an interlace system is magnified or reduced by an integer ration of M to N to form a conversion picture. A unit length U is obtained by dividing the distance between vertically adjacent picture elements of the original or the conversion pictures by N or M, respectively. The positions of the picture elements of both fields of the conversion picture are shifted by .vertline.M-N)/4.vertline..multidot.U from the respective positions that would have been occupied by the picture elements of the conversion picture.

REFERENCES:
patent: 4528585 (1985-07-01), Bolger
patent: 4610026 (1986-09-01), Tabata et al.
patent: 4651223 (1987-03-01), Sasaki et al.
patent: 4746981 (1988-05-01), Nadan et al.
patent: 4774581 (1988-09-01), Shiratsuchi
patent: 4792856 (1988-12-01), Shiratsuchi
patent: 4809345 (1989-02-01), Tabata et al.
patent: 4930021 (1990-05-01), Okada
patent: 5010413 (1991-04-01), Bahr

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