Television – Format conversion – Line doublers type
Patent
1998-03-31
2000-03-21
Lee, Michael H.
Television
Format conversion
Line doublers type
348458, H04N 701, H04N 1102
Patent
active
060408693
ABSTRACT:
An interlace to progressive scan video signal conversion system interpolates lines between respective lines of upper and lower fields which constitute an interlace-scan image frame to produce lines of a progressive-scan image frame. The produced lines have effective spatial and temporal positions between the respective lines of the lower field and the lines of the upper field. One line from the upper field is interpolated with two lines from the lower field which are immediately above and immediately below the one line in the interlaced frame in order to generate two lines for the progressive frame. Optionally, the interlace-scan to progressive-scan method is applied only to relatively low-frequency components of the luminance signal with the higher frequency luminance signal components being selected from one of the two interlaced fields and either line-doubled or interpolated and line-doubled before being added to the progressive-scan low-frequency luminance signal components. The chrominance components of the interlace scan video signal from one field are line doubled, separated into color-difference signal components and applied to a matrix with the progressive-scan luminance signal components.
REFERENCES:
patent: 4300162 (1981-11-01), Robers
patent: 4400719 (1983-08-01), Powers
patent: 4415931 (1983-11-01), Dischert
patent: 4550336 (1985-10-01), Sepp
patent: 4577225 (1986-03-01), Pritchard
patent: 4580163 (1986-04-01), Hartmeier
patent: 4583113 (1986-04-01), Pritchard
patent: 4639763 (1987-01-01), Willis et al.
patent: 4673978 (1987-06-01), Dischert et al.
patent: 4677482 (1987-06-01), Lewis
patent: 4679084 (1987-07-01), Topper et al.
patent: 4698675 (1987-10-01), Casey
patent: 4989091 (1991-01-01), Lucas
patent: 5329314 (1994-07-01), Correa et al.
patent: 5444494 (1995-08-01), Yamamoto et al.
patent: 5517247 (1996-05-01), Correa et al.
Lee Michael H.
Matsushita Electric - Industrial Co., Ltd.
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