EP0596423A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Layer encoding/decoding apparatus for input non-interlace video signal
Assignee: Sony Corp
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Filing: 1993-10-29
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Granted: —
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Expires: 2013-10-29
Abstract
Abstract In an encoder (1, 2; Fig. 1), an input picture of a non-interlace structure is sampled by down sampling to form an interlace picture,and the interlace picture is encoded. The encoded data are decoded to form an interlace decoded picture, and the interlace decoded picture is sampled by up sampling and utilized as a predictive picture upon encoding of the non-interlace input picture. In a decoder (7, 4; Fig. 2), a bit stream corresponding to an interlace picture of a low resolution is decoded into an interlace decoded picture. The interlace decoded picture is sampled by up sampling and is utilized as a predictive picture upon decoding of a bit stream corresponding to a non-interlace picture of a high resolution.
Inventors
- 👤 Jun C/O Sony Corporation Yonemitsu
- 👤 Katsumi c/o Sony Corporation Tahara
- 👤 Tomoyuki c/o Sony Corporation Sato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 06:30
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; H04N5/9261; H04N5/9264; H04N19/00; H04N19/50; H04N19/10; H04N19/102; H04N19/103; H04N19/112; H04N19/134; H04N19/136; H04N19/169; H04N19/187; H04N19/503; H04N19/51; H04N19/577; H04N19/59; H04N19/60; H04N19/61; H04N19/80; H04N7/00; H04N7/01; H04N19/30; H04N5/84; H04N5/85; H04N5/93; H04N5/94; H04N5/945
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
78 words
A video signal encoding apparatus, comprising: down sampling means (22) for sampling a non-interlace input video signal by down sampling to form an interlace picture; first encoding means (2) for encoding the interlace picture to form a first bit stream; up sampling means (34) for sampling the video signal based on the first bit stream by up sampling to form a non-interlace picture; and second encoding means (1) for encoding the non-interlace input picture using the non-interlace picture.
Claim 2
Dependent Claim
78 words
A video signal encoding apparatus, comprising: down sampling means (22) for sampling a non-interlace input video signal by down sampling to form an interlace picture; first encoding means (2) for encoding the interlace picture to form a first bit stream; up sampling means (34) for sampling the video signal based on the first bit stream by up sampling to form a non-interlace picture; and second encoding means (1) for encoding the non-interlace input picture using the non-interlace picture.
Claim 3
Dependent Claim
69 words
A video signal encoding apparatus according to claim 1, wherein said first encoding means (2) includes first conversion means (23-29) for performing predetermined conversion of the interlace picture, and first local decoding means for locally decoding the output of said first conversion means (23-29) to form a first locally decoded picture, said up sampling means sampling the first locally decoded picture by up sampling to form the non-interlace picture.
Claim 4
Dependent Claim
100 words
A video signal encoding apparatus according to claim 1, wherein said second encoding means (1) includes second conversion means (35-43) for performing predetermined conversion of the non-interlace input signal, second local decoding means for locally decoding the output of said second conversion means (35-43) to form a second locally decoded picture, motion compensation means (38, 39) for performing motion compensation of the second locally decoded picture to form a first predictive picture, and predictive picture formation means for forming a second predictive picture based on the non-interlace picture outputted from said up sampling means (34) and the first predictive picture.
Claim 5
Dependent Claim
57 words
A video signal encoding apparatus according to any of claims 1 to 3, wherein said down sampling means (22) includes thinning out means for thinning out pixels of the non-interlace input video signal, and filter means for changing over presence or absence of filtering to the input to said thinning out means in response to motion information.
Claim 6
Dependent Claim
53 words
A video signal encoding apparatus according to any of claim 1 to 4, wherein said up sampling means (34) includes interpolation means for performing interpolation based on pixels of the first predictive picture at the same positions and/or pixels of the first locally decoded picture at the same positions of an adjacent field.
Claim 7
Dependent Claim
28 words
A video signal encoding apparatus according to claim 5, wherein said interpolation means includes coefficient generation means (81) for generating a predetermined coefficient in response to motion information.
Claim 8
Dependent Claim
110 words
A video signal decoding apparatus, comprising: first decoding means (3) for forming an interlace decoded signal from a first input bit stream; up sampling means (57) for sampling the interlace decoded picture by up sampling to form a first non-interlace decoded signal; second decoding means (4) for forming a second non-interlace decoded picture from a second bit stream; motion compensation means (58) for performing motion compensation of the second non-interlace decoded picture to form a first predictive picture; and predictive picture formation means (55, 63) for forming a second predictive picture for decoding the second non-interlace decoded picture based on the first non-interlace decoded picture and the first predictive picture.
Claim 9
Dependent Claim
110 words
A video signal decoding apparatus, comprising: first decoding means (3) for forming an interlace decoded signal from a first input bit stream; up sampling means (57) for sampling the interlace decoded picture by up sampling to form a first non-interlace decoded signal; second decoding means (4) for forming a second non-interlace decoded picture from a second bit stream; motion compensation means (58) for performing motion compensation of the second non-interlace decoded picture to form a first predictive picture; and predictive picture formation means (55, 63) for forming a second predictive picture for decoding the second non-interlace decoded picture based on the first non-interlace decoded picture and the first predictive picture.
Claim 10
Dependent Claim
48 words
A video signal decoding apparatus according to claim7, wherein said up sampling means (57) includes interpolation means for performing interpolation based on peels of the first predictive picture at the same positions and/or pixels of the first locally decoded picture at the same positions of an adjacent field.
Claim 11
Dependent Claim
27 words
A video signal decoding apparatus according to claim 8, wherein said interpolation means includes coefficient generation means (81) for generating a predetermined coefficient based on motion information.
Claim 12
Dependent Claim
60 words
A video signal encoding method, comprising the steps of: sampling a non-interlace input video signal by down sampling to form an interlace picture; encoding the interlace picture to form a first bit stream; sampling a signal based on the first bit stream by up sampling to form a non-interlace picture; and encoding the non-interlace input picture using the non-interlace picture.
Claim 13
Dependent Claim
60 words
A video signal encoding method, comprising the steps of: sampling a non-interlace input video signal by down sampling to form an interlace picture; encoding the interlace picture to form a first bit stream; sampling a signal based on the first bit stream by up sampling to form a non-interlace picture; and encoding the non-interlace input picture using the non-interlace picture.
Claim 14
Dependent Claim
61 words
A video signal encoding method according to claim 10, wherein the step of encoding the interlace picture includes the steps of performing predetermined conversion of the interlace picture to form first coefficient data and, and locally decoding the coefficient data to form a first locally decoded picture, the signal based on the first bit stream being the first locally decoded picture.
Claim 15
Dependent Claim
80 words
A video signal encoding method according to claims 10 or 11, wherein the step of encoding the non-interlace input picture includes the steps of performing predetermined conversion of the non-interlace input picture to form second coefficient data, locally decoding the second coefficient data to form a second locally decoded picture, performing motion compensation of the second locally decoded picture to form a first predictive picture,and forming a second predictive picture based on the non-interlace picture and the first predictive picture.
Claim 16
Dependent Claim
31 words
A video signal encoding method according to any of claims 10 to 12, wherein, upon the down sampling, presence or absence of filtering is changed over in response to motion compensation.
Claim 17
Dependent Claim
50 words
A video signal encoding method according to any of claims 10 to 12, wherein, upon the up sampling, interpolation is performed based on picture elements of the first predictive picture at the same positions and/or pixels of the first locally decoded picture at the same positions of an adjacent field.
Claim 18
Dependent Claim
53 words
A video signal encoding method according to claim 14, wherein the step of interpolation includes the step of performing predetermined weighting of pixels of the first predictive pic- tureat the same positions and/or pixels of the first locally decoded picture at the same positions of an adjacent field in response to motion information
Claim 19
Dependent Claim
86 words
A video signal decoding method, comprising the steps of: forming an interlace decoded picture from a first input bit stream; sampling the interlace decoded picture by up sampling to form a first non-interlace decoded picture; forming a second non-interlace decoded picture from a second bit stream; performing motion compensation of the second non-interlace decoded picture to form a first predictive picture; and forming a second predictive picture for decoding the second non-interlace decoded picture based on the first interlace decoded picture and the first predictive picture.
Claim 20
Dependent Claim
86 words
A video signal decoding method, comprising the steps of: forming an interlace decoded picture from a first input bit stream; sampling the interlace decoded picture by up sampling to form a first non-interlace decoded picture; forming a second non-interlace decoded picture from a second bit stream; performing motion compensation of the second non-interlace decoded picture to form a first predictive picture; and forming a second predictive picture for decoding the second non-interlace decoded picture based on the first interlace decoded picture and the first predictive picture.
Claim 21
Dependent Claim
45 words
A video signal decoding method according to claim 16, wherein, upon the up sampling, interpolation is performed based on pixels of the first predictive picture at the same positions and/or pixels of the first locally decoded picture at the same positions of an adjacent field.
Claim 22
Dependent Claim
48 words
A video signal decoding method according to claim 17, wherein the step of interpolation includes the step of performing predetermined weighting of pixels of the first predictive picture at the same positions and/or pixels of the first locally decoded picture at the same positions of an adjacent field.
Claim 23
Dependent Claim
47 words
A video signal recording medium, having a first bit stream and a second bit stream recorded thereon, the first bit stream being formed by encoding an interlace picture signal while the second bit stream is formed by encoding a non-interlace picture signal using the first bit stream.
Claim 24
Dependent Claim
47 words
A video signal recording medium, having a first bit stream and a second bit stream recorded thereon, the first bit stream being formed by encoding an interlace picture signal while the second bit stream is formed by encoding a non-interlace picture signal using the first bit stream.
References Cited (Backward Citations)
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