Scan format conversion apparatus

Details Scan format conversion apparatus Scan format conversion apparatus

1992-02-25

1993-08-17

Kostak, Victor R.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358140, H04N 1120

Patent

active

052373967

ABSTRACT:
A scan format conversion apparatus has a scanning conversion circuit which digitally converts an interlaced-scanning TV signal into noninterlaced-scanning RGB signals and synchronizing signals. A plurality of interpolation computing circuits respectively produce a plurality of interpolation signals from the signals outputted from the scanning conversion circuit by executing computing operations. A plurality of image memories respectively store the signals outputted from the interpolation computing circuits for one-frame period. A memory controller properly controls the writing and reading operation performed by the plural image memories. The apparatus generates a plurality of scan-line data by a certain amount more than those which are generated by the noninterlaced-scanning operation, and then selects scan-line data available for a display unit with uniform alignment from the increased scan-line data.

REFERENCES:
patent: 4670772 (1987-06-01), Bolger
patent: 4719508 (1988-01-01), Sasaki et al.
patent: 4819077 (1989-04-01), Kikuchi et al.
patent: 5134479 (1992-07-01), Ohishi

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