Patent US6034734A successfully refreshed from Google Patents.
US6034734A
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Video signal scan conversion
Assignee: Koninklijke Philips NV
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Filing: 1996-10-31
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Granted: 2000-03-07
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Expires: 2016-10-31
Abstract
Abstract In a scan conversion method of generating an output video signal from an interlaced input signal, including the steps of furnishing (1) a first signal having first lines (F i (x-(0, 1) T , n)) corresponding to original lines of the interlaced input signal, and second lines (F i (x, n)) in addition to the first lines (F i (x-(0, 1) T , n)); and providing (5, 11, 7, 13) a second signal which is delayed or advanced with respect to the first signal, the second signal having first processed lines (F out (x-(0, 1) T -D, n-1)) corresponding to the original lines, and second processed lines (F out (x-D, n-1)) corresponding to the second lines (F i (x, n)); output lines (F out (x, n)) of the output video signal are obtained in dependence upon a first difference between the first processed lines (F out (x-(0, 1) T -D, n-1)) and the first lines (F i (x-(0, 1) T , n)), and a second difference between the second processed lines (F out (x-D, n-1)) and the second lines (F i (x, n)).
Inventors
- 👤 Gerard De Haan
- 👤 Paul W. A. C. Biezen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:05
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/01; H04N7/0117; H04N7/012
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
183 words
A scan conversion method of generating an output video signal from an interlaced input signal, comprising the steps of: furnishing a first signal having first lines (F i (x-(0, 1) T , n)) corresponding to original lines of said interlaced input signal, and second separate lines (F i (x, n)) in addition to said first lines (F i (x-(0, 1) T , n)); and providing a second signal which is delayed or advanced with respect to said first signal, said second signal having first processed lines (F out (x-(0, 1) T -D, n-1)) corresponding to said original lines, and second processed lines (F out (x-D, n-1)) corresponding to said second lines (F i (x, n)); characterized in that output lines (F out (x, n)) of said output video signal are obtained in dependence upon a first mixer-generated difference between said first processed lines (F out (x-(0, 1) T -D, n-1)) and said first lines (F i (x-(0, 1) T , n)), and a second mixer-generated difference between said second processed lines (F out (x-D, n-1)) and said second lines (F i (x, n)).
Claim 2
Dependent Claim
183 words
A scan conversion method of generating an output video signal from an interlaced input signal, comprising the steps of: furnishing a first signal having first lines (F i (x-(0, 1) T , n)) corresponding to original lines of said interlaced input signal, and second separate lines (F i (x, n)) in addition to said first lines (F i (x-(0, 1) T , n)); and providing a second signal which is delayed or advanced with respect to said first signal, said second signal having first processed lines (F out (x-(0, 1) T -D, n-1)) corresponding to said original lines, and second processed lines (F out (x-D, n-1)) corresponding to said second lines (F i (x, n)); characterized in that output lines (F out (x, n)) of said output video signal are obtained in dependence upon a first mixer-generated difference between said first processed lines (F out (x-(0, 1) T -D, n-1)) and said first lines (F i (x-(0, 1) T , n)), and a second mixer-generated difference between said second processed lines (F out (x-D, n-1)) and said second lines (F i (x, n)).
Claim 3
Dependent Claim
79 words
A method as claimed in claim 1, wherein said output video signal is a sequentially scanned video signal, and wherein the method comprises the further step of combining said first signal and said second signal to obtain an output sequentially scanned video signal having first output lines (F out (x-(0, 1) T , n)) corresponding to said original lines, and said output lines (F out (x, n)) between said first output lines (F out (x-(0, 1) T , n)).
Claim 4
Dependent Claim
54 words
A method as claimed in claim 2, wherein said output lines (F out (x, n)) of said output video signal are obtained further in dependence upon a relation (k 2 ) between said first lines (F i (x-(0, 1) T , n)) and said first output lines (F out (x-(0, 1) T , n)).
Claim 5
Dependent Claim
36 words
A method as claimed in claim 1, wherein said first processed lines (F out (x-(0, 1) T -D, n-1)) and said second processed lines (F out (x-D, n-1)) are obtained by means of a motion-compensated interpolation.
Claim 6
Dependent Claim
47 words
A method as claimed in claim 2, wherein said output lines are obtained in dependence upon said second difference and a third difference between said first output lines (F out (x-(0, 1) T , n)) and said first processed lines (F out (x-(0, 1) T -D, n-1)).
Claim 7
Dependent Claim
62 words
A method as claimed in claim 2, wherein said combining step is controlled such that a difference between said output lines (F out (x, n)) and said second processed lines (F out (x-D, n-1)) corresponds to a difference between said first output lines (F out (x-(0, 1) T , n)) and said first processed lines (F out (x-(0, 1) T -D, n-1)).
Claim 8
Dependent Claim
16 words
A method as claimed in claim 1, wherein said first and second differences are absolute differences.
Claim 9
Dependent Claim
191 words
A scan conversion apparatus for generating an output video signal from an interlaced input signal, comprising: means for furnishing a first signal having first lines (F i (x-(0, 1) T , n)) corresponding to original lines of said interlaced input signal, and separate second lines (F i (x, n)) in addition to said first lines (F i (x-(0, 1) T , n)); and means for providing a second signal which is delayed or advanced with respect to said first signal, said second signal having first processed lines (F out (x-(0, 1) T -D, n-1)) corresponding to said original lines, and second processed lines (F out (x-D, n-1)) corresponding to said second lines (F i (x, n)); characterized in that said scan conversion apparatus further comprises means for generating output lines (F out (x, n)) of said output video signal in dependence upon a first mixer-generated difference between said first processed lines (F out (x-(0, 1) T -D, n-1)) and said first lines (F i (x-(0, 1) T , n)), and a second mixer-generated difference between said second processed lines (F out (x-D, n-1)) and said second lines (F i (x, n)).
Claim 10
Dependent Claim
191 words
A scan conversion apparatus for generating an output video signal from an interlaced input signal, comprising: means for furnishing a first signal having first lines (F i (x-(0, 1) T , n)) corresponding to original lines of said interlaced input signal, and separate second lines (F i (x, n)) in addition to said first lines (F i (x-(0, 1) T , n)); and means for providing a second signal which is delayed or advanced with respect to said first signal, said second signal having first processed lines (F out (x-(0, 1) T -D, n-1)) corresponding to said original lines, and second processed lines (F out (x-D, n-1)) corresponding to said second lines (F i (x, n)); characterized in that said scan conversion apparatus further comprises means for generating output lines (F out (x, n)) of said output video signal in dependence upon a first mixer-generated difference between said first processed lines (F out (x-(0, 1) T -D, n-1)) and said first lines (F i (x-(0, 1) T , n)), and a second mixer-generated difference between said second processed lines (F out (x-D, n-1)) and said second lines (F i (x, n)).
Claim 11
Dependent Claim
78 words
An apparatus as claimed in claim 8, wherein said output video signal is a sequentially scanned video signal, and wherein the apparatus further comprises means for combining said first signal and said second signal to obtain an output sequentially scanned video signal having first output lines (F out (x-(0, 1) T , n)) corresponding to said original lines, and said output lines (F out (x, n)) between said first output lines (F out (x-(0, 1) T , n)).
Claim 12
Dependent Claim
54 words
An apparatus as claimed in claim 9, wherein said output lines (F out (x, n)) of said output video signal are obtained further in dependence upon a relation (k 2 ) between said first lines (F i (x-(0, 1) T , n)) and said first output lines (F out (x-(0, 1) T , n)).
Claim 13
Dependent Claim
47 words
An apparatus as claimed in claim 9, wherein said output lines are obtained in dependence upon said second difference and a third difference between said first output lines (F out (x-(0, 1) T , n)) and said first processed lines (F out (x-(0, 1) T -D, n-1)).
Claim 14
Dependent Claim
62 words
An apparatus as claimed in claim 9, wherein said combining means are controlled such that a difference between said output lines (F out (x, n)) and said second processed lines (F out (x-D, n-1)) corresponds to a difference between said first output lines (F out (x-(0, 1) T , n)) and said first processed lines (F out (x-(0, 1) T -D, n-1)).
Claim 15
Dependent Claim
42 words
A video signal display apparatus comprising: means for supplying an interlaced input signal; a scan conversion apparatus for generating an output video signal from said interlaced input signal, as claimed in claim 8; and means for displaying (16) said output video signal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-03-07 | 2003-09-06 | 2004-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-07 | 2007-09-06 | 2008-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-07 | 2011-09-06 | 2012-03-07 | $7700.00 | Window Closed / Lapsed |