Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1988-10-14
1989-11-14
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358140, 358216, H04N 704
Patent
active
048811254
ABSTRACT:
A system for providing a progressive-scan video display signal from a received video signal derived from a film having successive image frames by producing odd and even video fields from each film frame, with the video fields being produced at a greater rate than the film frame rate and in a repetitive sequentially varying relationship to the film frames. The system includes one-field delay devices for delaying each field of the received video signal; and a switching circuit and one-line FIFO stacks for combining the received and delayed video fields to provide a progressive-scan video frame signal at the video field rate, in which alternate lines are derived respectively from odd and even video fields. A film-sync detection device determines the positions of the received video fields in the repetitive sequence; and a control circuit coupled to the film-sync detection device controls the switching circuit and the one-line FIFO stacks in accordance with said determined field positions to vary the combinations of the received and delayed video fields in accordance with the repetitive sequentially varying relationship of the received video fields to the film frames from which they were derived.
REFERENCES:
patent: 4509071 (1982-04-01), Fujimura
patent: 4607282 (1986-08-01), Vande Polder
patent: 4641188 (1987-02-01), Dischert
patent: 4720744 (1988-01-01), Washi et al.
Tsinberg, "Phillips NTSC-Compatible Two-Channel Television System", Third International Colloquium on Advanced Television System: HDTV87, Oct. 4-8, 1987, Ottawa, Canada.
Isnardi, et al., "A single Channel, NTSC Compatible Widescreen EDTV Syst.," Third International Colloquim on Advanced Television System: HDTV87, Oct. 4-8, 1987, Ottawa, Canada.
Lucas, "B-MAC and HTDV-How Does It Fit?" Third International Colloquim on Advanced Television System: HDTV87, Oct. 4-8, Ottawa, Canada.
Callan Edward W.
General Instrument Corporation
Groody James J.
Harvey David E.
LandOfFree
Progressive scan display of video derived from film does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Progressive scan display of video derived from film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Progressive scan display of video derived from film will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1855797