Television – Format conversion – Changing number of fields for standard conversion
Patent
1994-09-30
1997-06-24
Lee, Michael H.
Television
Format conversion
Changing number of fields for standard conversion
348447, 348620, H04N 701
Patent
active
056421702
ABSTRACT:
An appearance of a double image around moving objects may be reduced or removed by generating motion compensated 100 Hz fields with the objects in correct positions. When, however, the results of this technique are applied to motion compensated upconversion, objects or parts of the picture which fall outside the range of measurable velocities appear on the upconverted display with a very strong double image, resulting from the display of information in the wrong temporal position generated by uncompensated or `fallback processing`. The subjective strength of the double image may be reduced by low pass filtering in a horizontal direction the components in the new fields of the upconverted signal which cause this double image.
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patent: 5057921 (1991-10-01), Robert et al.
patent: 5325199 (1994-06-01), Childs
Signal Processing of HDTV; 29 Feb. -2 Mar. 1988, L'Aquilla, Italy, pp. 393-399, Fernando et al., "Motion Compensated Display Conversion".
Research Disclosure No. 346 Feb. 1993, Havant GB, Anonymous, "Field Number Conversion Filtering".
Signal Processing of HDTV, II; 30 Aug. -1 Sep. 1989 Turin, Italy, pp. 649-655, Haghiri et al., "A Motion Compensated Field Rate Conversion Algorithm".
IEEE 1990 International Conference on Consumer Electronics; 6-8 Jun. 1990; Rosemont, US, Dreier, "100 Hz Conversion with Adaptive Line Flicker Reduction".
Bolender Nadine
Hackett Andrew
Kerdranvat Michel
Knee Michael
Lee Michael H.
Thomson Consumer Electronics S.A.
Tripoli Joseph S.
Wein Frederick A.
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