Television – Format conversion – Conversion between standards with different aspect ratios
Patent
1997-03-18
1999-09-21
Kostak, Victor R.
Television
Format conversion
Conversion between standards with different aspect ratios
348580, H04N 701
Patent
active
059560916
ABSTRACT:
In a method of processing 16:9 pictures for display on a screen with a 4:3 aspect ratio, each line of the television signal is compressed and/or expanded so that the ratio of the length of a segment of unprocessed signal to the length of the resultant signal derived from it, varies along the line. Preferably, each line is subject to "cylindrical" processing such that it is compressed as though the line were extended along an arc of a circle and projected along a direction onto a flat plane joining the ends of the arc. The picture may also be subject to slight vertical stretching to give a final image which is subject to distortion at an acceptable level while retaining a good level of vertical detail.
REFERENCES:
patent: 3757040 (1973-09-01), Bennett et al.
patent: 4556906 (1985-12-01), Dischert et al.
patent: 4605452 (1986-08-01), Powers
patent: 4605952 (1986-08-01), Powers
patent: 4751660 (1988-06-01), Hedley
patent: 4752828 (1988-06-01), Chapuis
patent: 4754204 (1988-06-01), Ando
patent: 4763194 (1988-08-01), Osman
patent: 4951125 (1990-08-01), Kojima et al.
patent: 5287042 (1994-02-01), Haferl
patent: 5301025 (1994-04-01), Hatano et al.
patent: 5461431 (1995-10-01), Takebuchi et al.
patent: 5537149 (1996-07-01), Teraoka et al.
Devereux Victor Gerald
Drewery John Oliver
British Broadcasting Corporation
Kostak Victor R.
Neuner George W.
LandOfFree
Method of showing 16:9 pictures on 4:3 displays does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of showing 16:9 pictures on 4:3 displays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of showing 16:9 pictures on 4:3 displays will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-85226