We have develQpped a 皿 otion − adaptive field conversion syste 皿 for nenstandard speed play of a D − 2 co 皿 posite VTR . It is rea 且ized by e じo 皿 binat 圭 en of a Y /C separation techR 重que and a Line − interpoLation technique which adaptive まy use inter − field signals . And 胛 e have deveEepped a new 皿 ot 呈on detecting nethod too . This method add a ... nter − field 皿 otion detect ・ ion by 玉evel co 阻 parison to a conventioua 且 皿 ethod using temporal − spatial filter . With those technique3 it

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... as beco 皿 e possible to improve periodtcal displace 皿 ent of vertical transition , deterioraし ion of vertical resolut 置 on , fLicker 藍 n chro 皿 iRance signal and ' so on . So picture quality as good as uor 皿 al p 玉 ay 皿 ode has been obtained in nonstandard − speed play mode . 英文 key WOrdS VTR , variable play , fie ユ d c 。nversion , V/じ separati 。n , Iine interpolati 。 11 ,皿oti 。n detection 一 19 一 N 工 工 一 Eleotronio Library