EP0597647A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Video signal encoding
Assignee: Sony Corp
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Filing: 1993-11-08
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Granted: —
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Expires: 2013-11-08
Abstract
Abstract A motion vector detected by a motion detector (2) and a quantizing parameter and a frame structure determined by a controller (4) are stored in a memory (5). The data thus stored is supplied to an encoder (3) which carries out encode processing corresponding to the stored data. Thus, the data are coded via multiple paths which can reduce restrictions from the standpoint of time and also reduce the scale of hardware needed for encoding.
Inventors
- 👤 Yasushi C/O Intellectual Prop. Div. Fujinami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 18:44
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; H04N5/9261; H04N19/00; H04N19/10; H04N19/102; H04N19/103; H04N19/107; H04N19/114; H04N19/117; H04N19/134; H04N19/136; H04N19/137; H04N19/146; H04N19/15; H04N19/154; H04N19/157; H04N19/159; H04N19/162; H04N19/169; H04N19/17; H04N19/172; H04N19/176; H04N19/177; H04N19/179; H04N19/189; H04N19/192; H04N19/46; H04N19/50; H04N19/503; H04N19/51; H04N19/577; H04N19/60; H04N19/61; H04N19/80; H04N19/85; H04N19/87; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042; H04N5/14; H04N5/147
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
123 words
A video coder for compressing and encoding input video data, comprising: means for setting coding parameters; first encode means for coding said video data into first coded video data for evaluating said coding parameters on the basis of said coding parameters; memory means for storing said coding parameters; compare means for comparing amount of said first coded video data with predetermined amount of data; control means for varying said coding parameters stored in said memory means into other coding parameters on the basis of comparative result of said compare means; and second encode means for coding the same video data that is coded in said first encode means into second coded video data for transmission on the basis of said other coding parameters.
Claim 2
Dependent Claim
37 words
The video coder according to claim 1 , further comprising: control means for varying said coding parameters stored in said memory means into other coding parameters on the basis of S/N ratio of said first encoded data.
Claim 3
Dependent Claim
33 words
The video coder according to claim 1 , further comprising: filter means for filtering said video data, and said coding parameters include filter information for controlling a filter characteristic of said filter means.
Claim 4
Dependent Claim
44 words
The video coder according to claim 1 , wherein said first encode means includes quantizing means for quantizing said input video data and providing corresponding quantized data; and said coding parameters include a quantizing parameter for controlling a quantizing characteristic of said quantizing means.
Claim 5
Dependent Claim
29 words
The video corder according to claim 1 , wherein said coding parameters include frame structure information which determines a coding system for every frame of said input video data.
Claim 6
Dependent Claim
29 words
The video coder according to claim 1 , wherein said coding parameters include predictive mode information which regulates a reference picture for calculating a difference of every predetermined block.
Claim 7
Dependent Claim
71 words
The video coder according to claim 4, further comprising motion detecting means for detecting a motion of said input video data and providing a corresponding motion vector included in said coding parameters; and in which said first encode means include inverse quantizing means for inverse-quantizing said quantized data, and motion compensation means for compensating a motion of the inverse-quantized data by using the motion vector detected by said motion detecting means.
Claim 8
Dependent Claim
58 words
The video coder according to claim 7 , wherein said first encode means further include means provided at a preceding stage of said quantizing means for processing said input video data in a discrete cosine transform (DCT) fashion, and means provided at a succeeding stage of inverse-quantizing means for processing said input video data in an inverse-DCT fashion.
Claim 9
Dependent Claim
116 words
A video coding method for compressing an amount of video data, comprising the steps of: setting coding parameters; storing said coding parameters in memory means; first coding said video data into first coded video data for evaluating said coding parameters on the basis of said coding parameters; comparing amount of said first coded video data with predetermined amount of data; varying said coding parameters stored in said memory means into other coding parameters on the basis of comparative result of the step of comparing; and second coding the same video data that is coded in the step of the first coding into second coded video data for transmission on the basis of said other coding parameters.
Claim 10
Dependent Claim
37 words
The video coding method according to claim 9, further comprising the step of: varying said coding parameters stored in said memory means into other coding parameters on the basis of S/N ratio of said first encoded data.
Claim 11
Dependent Claim
33 words
The video coder according to claim 9 , further comprising the step of: filtering said video data, and said coding parameters include filter information for controlling a filter characteristic of said filter means.
Claim 12
Dependent Claim
25 words
The video coding method according to claim 9 , wherein said coding parameters include a quantizing parameter which is used to control a quantizing characteristic.
Claim 13
Dependent Claim
29 words
The video coding method according to claim 9 , wherein said coding parameters include frame structure information which determines a coding system for every frame of said video data.
Claim 14
Dependent Claim
30 words
The video coding method according to claim 9 , wherein said coding parameters include predictive mode information which regulates a reference picture for calculating a difference of every predetermined block.
Claim 15
Dependent Claim
36 words
The video coding method according to claim 9 , wherein said coding parameters include a motion vector; and further comprising the step of effecting motion compensation of said video data in accordance with said motion vector.
Claim 16
Dependent Claim
107 words
A coded video data produced by: setting coding parameters; storing said coding parameters in memory means; first coding said video data into first coded video data for evaluating said coding parameters on the basis of said coding parameters; comparing amount of said first coded video data with predetermined amount of data; varying said coding parameters stored in said memory means into other coding parameters on the basis of comparative result of the step of comparing; and second coding the same video data that is coded in the step of the first coding into second coded video data for transmission on the basis of said other coding parameters.
Claim 17
Dependent Claim
115 words
A recording medium produced by: setting coding parameters; storing said coding parameters in memory means; first coding said video data into first coded video data for evaluating said coding parameters on the basis of said coding parameters; comparing amount of said first coded video data with predetermined amount of data; varying said coding parameters stored in said memory means into other coding parameters on the basis of comparative result of the step of comparing; second coding the same video data that is coded in the step of the first coding into second coded video data for transmission on the basis of said other coding parameters; and recording said second coded video data on a medium.
References Cited (Backward Citations)
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