Processing apparatus for progressive scan generation of a televi

Details Processing apparatus for progressive scan generation of a televi Processing apparatus for progressive scan generation of a televi

1994-10-27

1996-07-09

Kostak, Victor R.

Television

Format conversion

Line doublers type

348452, 348458, H04N 7015

Patent

active

055349358

ABSTRACT:
A processing apparatus employs motion-adaptive processing to create a progressive scanning signal from an interlaced television scanning signal. The interlaced scanning signal is input to a field delay circuit and to a vertical highpass filter, the output of the field delay circuit is input to a field delay circuit and to a vertical lowpass filter, and the output of the field delay circuit is input to a vertical highpass filter. The outputs of the vertical highpass filters are added together at an adder. The output of the adder is added to the output of the vertical lowpass filter to create an interpolation signal. The interpolation signal and direct-type signal, being time-compressed, are coupled to a switch where they are alternately selected to obtain a progressive scanning signal with improved image quality, irrespective of whether the input signal represents a still or moving image.

REFERENCES:
patent: 4673978 (1987-06-01), Dischert et al.
patent: 5204745 (1993-04-01), Kawai et al.
patent: 5365274 (1994-11-01), Seki
patent: 5402186 (1995-03-01), Kawai

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