EP0574068A2
Expired / Lapsed
EP
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Motion-compensated picture signal interpolation
Assignee: Koninklijke Philips NV
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Filing: 1993-06-02
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Granted: —
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Expires: 2013-06-02
Abstract
Abstract In a motion-compensated picture signal interpolation apparatus comprising a field memory (FM2) for delaying an input field sequence, a motion vector estimator (ME) for furnishing motion vectors, and a motion-compensated interpolator (MC) coupled to an input and an output of the field memory (FM2) for furnishing a sequence of motion-compensated output fields on the basis of the motion vectors, inputs of the motion vector estimator (ME) are coupled to the input and the output of the field memory (FM2) to estimate the motion vectors by means of the same single field memory (FM2) which is used for the motion-compensated interpolation. <IMAGE>
Inventors
- 👤 Gerard De Haan
- 👤 Olukayode Anthony Ojo
- 👤 Paul Wilhelm Albert Cornelis Biezen
- 👤 Hendrik Huijgen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 00:58
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/01; H04N7/0127; H04N7/0132; H04N7/0117; H04N7/012
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
74 words
A motion-compensated picture signal interpolation apparatus comprising: a single field memory (FM2) for delaying a picture signal field sequence; motion vector estimation means (ME) coupled to an input and an output of said single field memory (FM2) for furnishing motion vectors; and motion-compensated interpolation means (MC) coupled to said input and said output of said single field memory (FM2) for furnishing a sequence of motion-compensated output fields on the basis of said motion vectors.
Claim 2
Dependent Claim
48 words
A motion-compensated picture signal interpolation apparatus as claimed in claim 1, further comprising a motion vector memory (VM) for storing said motion vectors, said motion-compensated interpolation means (MC) furnishing said sequence of motion-compensated output fields on the basis of motion vectors stored in said motion vector memory (VM).
Claim 3
Dependent Claim
87 words
A motion-compensated picture signal interpolation apparatus as claimed in claim 2, wherein in the presence of fields originating from film pictures, the contents of said motion vector memory (VM) are not changed when two fields originating from a same film picture are present at said input and said output of said single field memory (FM2), motion vectors estimated between a first (A') and a second (B) film picture being used to interpolate a field (BC') between said second (B') and a third (C) film picture. (Fig. 5)
Claim 4
Dependent Claim
51 words
A motion-compensated picture signal interpolation apparatus as claimed in claim 1, further comprising an input field memory (FM1) for applying said picture signal field sequence at a doubled field rate to said delaying single field memory (FM2), to said motion vector estimation means (ME), and to said motion-compensated interpolation means (MC).
Claim 5
Dependent Claim
113 words
A motion-compensated picture signal interpolation apparatus as claimed in claim 4, further comprising a motion vector memory (VM) for storing said motion vectors, said motion-compensated interpolation means (MC) furnishing said sequence of motion-compensated output fields on the basis of motion vectors stored in said vector memory (VM), wherein in the presence of fields originating from film pictures, the contents of said motion vector memory (VM) are not changed when two fields originating from a same film picture are present at said input and said output of said single field memory (FM2), and said apparatus furnishes an output field sequence constituted by pairs of input fields alternated with pairs of interpolated fields. (Fig. 3)
Claim 6
Dependent Claim
71 words
A motion-compensated picture signal interpolation apparatus as claimed in claim 1, comprising a first set of line memory sections (LM1, LM2) for coupling said input and said output of said delaying single field memory (FM2) to said motion vector estimation means (ME), and a second set of line memory sections (LM3, LM4) coupled between said first set of line memory sections (LM1, LM2) and said motion-compensated interpolation means (MC). (Fig. 6)
Claim 7
Dependent Claim
54 words
A motion-compensated picture signal interpolation apparatus as claimed in claim 1 or 6, wherein in the presence of fields originating from film pictures, motion vectors estimated between a first (A') and a second (B,B') film picture are used to interpolate a field (AB) between said first (A') and second (B') film pictures. (Fig. 1+7,6+7)
Claim 8
Dependent Claim
50 words
A motion-compensated picture signal interpolation apparatus as claimed in claim 1, wherein motion vectors estimated between a first (A) and a second (B) field are used to interpolate lines from a third field (C) between lines from said second field (B) to obtain a progressively scanned field (BC). (Fig. 4)
Claim 9
Dependent Claim
106 words
A motion-compensated picture signal interpolation apparatus comprising: memory means (FM1,FM2) for furnishing a field sequence having a number of fields per second different from that of an input field sequence; motion vector estimation means (ME) coupled to said memory means (FM1,FM2) for furnishing motion vectors; motion-compensated interpolation means (MC) coupled to said input and said output of said memory means (FM2) for furnishing a sequence of motion-compensated output fields on the basis of said motion vectors; and wherein in the presence of fields originating from film pictures, said apparatus furnishes an output field sequence constituted by pairs of input fields alternated with pairs of interpolated fields.
Claim 10
Dependent Claim
52 words
A receiver for television signals, comprising: means for receiving and decoding said television signals to obtain picture signals; means coupled to said receiving and decoding means for enhancing said picture signals; and characterized in that said enhancing means include a motion-compensated picture signal interpolation apparatus as defined in claim 1 or 9.
References Cited (Backward Citations)
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