EP0618734A2
Expired / Lapsed
EP
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Picture signal processing
Assignee: Sony Corp
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Filing: 1994-03-28
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Granted: —
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Expires: 2014-03-28
Abstract
Abstract A picture type identifier, indicating one of intra-picture coding (an I-picture), forward or backward predictive coding (a P-picture) and bi-directionally predictive coding (a B-picture), is included (108) with a picture signal when the signal (100) is encoded (102) and when the signal is decoded. Each of initial and subsequent encoding and decoding is a function of the included picture type.
Inventors
- 👤 Katsumi C/O Intellectual Prop. Div. Tahara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-10 02:25
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/20; H04N21/23; H04N21/236; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042; H04N9/8047; H04N19/00; H04N19/10; H04N19/134; H04N19/157; H04N19/159; H04N19/40; H04N19/46; H04N19/60; H04N19/61; H04N21/23614; H04N21/40; H04N21/43; H04N21/434; H04N21/4348; H04N7/00; H04N7/14; H04N7/24; H04N7/52; H04N7/54
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
64 words
Apparatus for processing a picture signal, the apparatus comprising: means for receiving a picture type signal indicating one of intra-picture coding, predictive coding and bi-directionally predictive coding for respective pictures represented by said picture signal; and coding means (102; 108; 152; 158; 450, 454, 458) for encoding said picture signal as a function of said picture type signal to produce an encoded picture signal.
Claim 2
Dependent Claim
24 words
Apparatus according to claim 1, wherein said means for receiving includes means (106; 156) for separating said picture type signal from said picture signal.
Claim 3
Dependent Claim
28 words
Apparatus according to claim 1 or claim 2, comprising means (103; 110; 153; 160) for decoding said encoded picture signal as a function of said picture type signal.
Claim 4
Dependent Claim
24 words
Apparatus according to claim 1, claim 2 and claim 3, which is operative to process a said picture signal which is a digital signal.
Claim 5
Dependent Claim
90 words
Apparatus according to any one of claims 1 to 4, wherein said coding means (450, 454, 458) includes: motion vector detection means (450) for detecting motion vectors between said pictures represented by said picture signal as a function of said picture type signal; predictive judging means (454) for choosing one of intra-coding, forward predictive coding, backward predictive coding and bi-directionally predictive coding macro-block by macro-block as a function of said picture type signal; and variable length coding means (458) for encoding said picture type signal in said encoded picture signal.
Claim 6
Dependent Claim
55 words
Apparatus for processing an encoded picture signal, the apparatus comprising: means (103; 110; 153; 160; 482) for decoding said encoded picture signal to produce a picture type signal and a decoded picture signal; and means (105; 111; 155; 161) for multiplexing said picture type signal and said decoded picture signal to produce an output signal.
Claim 7
Dependent Claim
47 words
Apparatus according to claim 6, for use where each picture of said decoded picture signal includes a vertical blanking interval, wherein said means (105; 111; 155; 161) for multiplexing is operative to insert said picture type signal into the vertical blanking intervals of said decoded picture signal.
Claim 8
Dependent Claim
26 words
Apparatus according to claim 6 or claim 7, comprising means (108; 158) for encoding said decoded picture signal as a function of said picture type signal.
Claim 9
Dependent Claim
25 words
Apparatus according to claim 6, claim 7 or claim 8, which is operative to produce a said decoded picture signal which is a digital signal.
Claim 10
Dependent Claim
46 words
Apparatus according to any one of claims 6 to 9, wherein said means for decoding includes variable length decoding means (482) for separating said picture type signal from said output signal and wherein said means for multiplexing is operative to multiplex the separated picture type signal.
Claim 11
Independent Claim
63 words
A method of processing a picture signal, the method comprising the steps of: receiving a picture type signal indicating one of intra-picture coding, predictive coding and bi-directionally predictive coding for respective pictures represented by said picture signal; and encoding (102; 108; 152; 158; 450, 454, 458) said picture signal as a function of said picture type signal to produce an encoded picture signal.
Claim 12
Dependent Claim
23 words
A method according to claim 11, wherein the step of receiving includes separating (106; 156) said picture type signal from said picture signal.
Claim 13
Dependent Claim
30 words
A method according to claim 11 or claim 12, comprising a step of decoding (103; 110; 153; 160) said encoded picture signal as a function of said picture type signal.
Claim 14
Dependent Claim
19 words
A method according to claim 11, claim 12 or claim 13, wherein said picture signal is a digital signal.
Claim 15
Independent Claim
75 words
A method according to any one of claims 11 to 14, wherein the step of encoding includcs: detecting (450) motion vectors between said pictures represented by said picturc signal as a function of said picture type signal; choosing (454) one of intra-coding, forward predictive coding, backward predictive coding and bi-directionally predictive coding macro-block by macro-block as a function of said picture type signal; and encoding (458) said picture type signal in said encoded picture signal.
Claim 16
Independent Claim
52 words
A method of processing an encoded picture signal, the method comprising: decoding (103; 110; 153; 160; 482) said encoded picture signal to produce a picture type signal and a decoded picture signal; and multiplexing (105; 111; 155; 161) said picture type signal and said decoded picture signal to produce an output signal.
Claim 17
Dependent Claim
41 words
A method according to claim 16, wherein each picture of said decoded picture signal includes a vertical blanking interval, and the multiplexing (105; 111; 155; 161) inserts said picture type signal into the vertical blanking intervals of said decoded picture signal.
Claim 18
Dependent Claim
25 words
A method according to claim 16 or claim 17, comprising encoding (108; 158) said decoded picture signal as a function of said picture type signal.
Claim 19
Dependent Claim
20 words
A method according to claim 16, claim 17 or claim 18, wherein said decoded picture signal is a digital signal.
Claim 20
Independent Claim
34 words
A method according to any one of claims 16 to 19, wherein the decoding includes separating said picture type signal from said output signal and wherein the multiplexing multiplexes the separated picture type signal.
References Cited (Backward Citations)
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