EP0395271A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Motion dependent video signal processing
Assignee: Sony Corp
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Filing: 1990-04-11
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Granted: —
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Expires: 2010-04-11
Abstract
Abstract In, for example, a motion compensated video standards converter wherein blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the next succeeding field or frame of the video signal for deriving motion vectors representing the motion of the content of respective blocks between the first field or frame and the next field or frame, the blocks (a; q) adjacent to a border region of the field or frame are assigned motion vectors selected from the motion vectors which have been derived for those of the blocks (d, b, c; r, f, s, t, g) which are adjacent to the block (a, q) under consideration and are not in the border region.
Inventors
- 👤 Raphael Samad
- 👤 Clive Henry Gillard
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 18:03
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/144; H04N5/145; G; G06; G06T; G06T7/00; G06T7/20; G06T7/223; G06T7/231; H04N19/00; H04N19/50; H04N19/503; H04N19/51; H04N19/513; H04N19/521; H04N19/523; H04N19/55; H04N19/553; H04N19/57; H04N19/80; H04N7/00; H04N7/01; H04N7/0117; H04N7/012; H04N7/0125; H04N7/0135; H04N7/014; G06T2207/00; G06T2207/10; G06T2207/10016
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
125 words
A motion compensated video standards converter comprising: means (3, 4) for comparing blocks in a first field or frame of a video signal with a plurality of blocks in the following field or frame of the video signal for deriving motion vectors representing the motion of the content of respective said blocks between said first field or frame and said following field or frame; means (27) to assign to each of said blocks adjacent to a border region of each said field or frame, motion vectors selected from motion vectors which have been derived for those of said blocks which are adjacent to said block under consideration and are not in said border region; and an interpolator (8) controlled in dependence on said motion vector.
Claim 2
Dependent Claim
125 words
A motion compensated video standards converter comprising: means (3, 4) for comparing blocks in a first field or frame of a video signal with a plurality of blocks in the following field or frame of the video signal for deriving motion vectors representing the motion of the content of respective said blocks between said first field or frame and said following field or frame; means (27) to assign to each of said blocks adjacent to a border region of each said field or frame, motion vectors selected from motion vectors which have been derived for those of said blocks which are adjacent to said block under consideration and are not in said border region; and an interpolator (8) controlled in dependence on said motion vector.
Claim 3
Dependent Claim
55 words
A converter according to claim 1 wherein said means (27) assigns to each of said blocks adjacent to a corner of said border region, motion vectors selected from the motion vectors which have been derived for the three said blocks which are adjacent to said block under consideration and are not in said border region.
Claim 4
Dependent Claim
58 words
A converter according to claim 1 or claim 2 wherein said means (27) assigns to each of said blocks adjacent to an edge of said border region, motion vectors selected from the motion vectors which have been derived for the five said blocks which are adjacent to said block under consideration and are not in said border region.
Claim 5
Dependent Claim
26 words
A converter according to claim 1, claim 2 or claim 3 wherein said means (27) additionally assigns a zero motion vector to said block under consideration.
Claim 6
Dependent Claim
34 words
A converter according to any one of the preceding claims wherein said comparison is effected by comparing the sums of the luminance levels of the pixels in the respective said blocks to be compared.
Claim 7
Independent Claim
139 words
A method of deriving motion vectors representing motion between successive fields or frames of a video signal, the method including the steps of: comparing blocks in a first field or frame of the video signal with a plurality of blocks in the following field or frame of the video signal for deriving said motion vectors representing the motion of the content of respective said blocks between said first field or frame and said following field or frame; and assigning to each of said blocks (a: q) adjacent to a border region of each said field or frame, the motion vectors selected from the motion vectors which have been derived for those of said blocks (d, b, c; r, f, s, t, g) which are adjacent to said block (a, q) under consideration and are not in said border region.
Claim 8
Independent Claim
139 words
A method of deriving motion vectors representing motion between successive fields or frames of a video signal, the method including the steps of: comparing blocks in a first field or frame of the video signal with a plurality of blocks in the following field or frame of the video signal for deriving said motion vectors representing the motion of the content of respective said blocks between said first field or frame and said following field or frame; and assigning to each of said blocks (a: q) adjacent to a border region of each said field or frame, the motion vectors selected from the motion vectors which have been derived for those of said blocks (d, b, c; r, f, s, t, g) which are adjacent to said block (a, q) under consideration and are not in said border region.
Claim 9
Dependent Claim
60 words
A method according to claim 6 wherein said assignment comprises assigning to each of said blocks (a) adjacent to a corner of said border region, motion vectors selected from the motion vectors which have been derived for the three said blocks (d, b, c) which are adjacent to said block (a) under consideration and are not in said border region.
Claim 10
Dependent Claim
65 words
A method according to claim 6 or claim 7 wherein said assignment comprises assigning to each of said blocks (q) adjacent to an edge of said border region, motion vectors selected from the motion vectors which have been derived for the five said blocks (r, f, s, t, g) which are adjacent to said block (q) under consideration and are not in said border region.
Claim 11
Dependent Claim
25 words
A method according to claim 6, claim 7 or claim 8 comprising additionally assigning a zero motion vector to said block (a, q) under consideration.
Claim 12
Independent Claim
35 words
A method according to any one of claims 6 to 9 wherein said comparison is effected by comparing the sums of the luminance levels of the pixels in the respective said blocks to be compared.
References Cited (Backward Citations)
No citation records indexed.
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