Television – Format conversion
Patent
1997-10-15
2000-11-07
Lee, Michael H.
Television
Format conversion
348445, 348448, 348452, 348556, H04N 701
Patent
active
06144412&
ABSTRACT:
In order to carry out format conversion or scaling processing of picture signal by a memory having a small capacity, picture signals of interlace scanning are converted into picture signals of progressive scanning by interpolation by using an IP convertor 1 and a multiple scan convertor 3, a scaling processing of expansion and compression in the horizontal direction is firstly performed by using a horizontal scaling unit 5, processing of expansion, compression, frame rate conversion, synchronization and the like are secondly performed by using a vertical scaling unit 6 and commonly using memories used in scaling processing in the vertical direction and finally, color space conversion or inverse gamma processing is performed by using a picture quality improving unit 8 thereby converting the picture signals into picture signals S6 having a predetermined format.
REFERENCES:
patent: 5227882 (1993-07-01), Kato
patent: 5485216 (1996-01-01), Lee
patent: 5497199 (1996-03-01), Asada et al.
Hirano Yasuhiro
Ishikura Kazuo
Itagaki Tsuguo
Kimura Shoji
Kurita Toshiyuki
Hitachi , Ltd.
Lee Michael H.
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