Patent EP0577310A2 successfully refreshed from Google Patents.
EP0577310A2
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EP
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Image processing device
Assignee: Canon Inc
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Filing: 1993-06-22
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Granted: —
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Expires: 2013-06-22
Abstract
Abstract An image processing device which comprises an input terminal 1, 100 for inputting an image signal, a dividing circuit 29, 101 for dividing the image signal into a plurality of code groups, and a plurality of processing circuits 31a, 31b, 31c, 31d, 105, 106, 107 for processing the plurality of code groups respectively. Each of said plurality of processing circuits includes a motion detection circuit 21, 206, 207 for detecting a motion of the image, and a handling circuit, 111, 112, 113, 114 for handling a part of the code group to another processing circuit.
Inventors
- 👤 Yoshitaka c/o Canon Kabushiki Kaisha Takeuchi
- 👤 Masato c/o Canon Kabushiki Kaisha Kato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:28
CPC Classifications
H; H04; H04N; H04N19/00; H04N19/85; H04N19/42; H04N19/436; H04N19/50; H04N19/503; H04N19/51; H04N19/60; H04N19/61; H04N19/30
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
55 words
An image processing device, comprising input means for inputting an image signal; dividing means for dividing the image signal into a plurality of code groups; and a plurality of processing means for processing the plurality of code groups respectively, each of said processing means including a motion detection circuit for detecting motion of the image.
Claim 2
Dependent Claim
38 words
A device according to claim 1, wherein each of said processing means further includes an encoding circuit for encoding its associated code groups to compress the data thereof by using an output of its associated motion detection circuit.
Claim 3
Dependent Claim
75 words
A device according to claim 2, wherein each said encoding circuit includes a calculation circuit for calculating a difference between codes of a present picture to be encoded and codes of a previous picture, and a motion compensation circuit for supplying correlative codes of the previous picture to the codes of the present picture to the calculation circuit by varying a timing to be supplied in accordance with the output of the motion detection circuit.
Claim 4
Dependent Claim
33 words
A device according to claim 3, wherein each motion detection circuit detects motion vectors which indicate directions and extents of image movement and the motion compensation circuit operates according to the motion vectors.
Claim 5
Dependent Claim
51 words
A device according to claim 2, wherein the encoding circuit includes a dividing circuit for further dividing the code group into a plurality of code blocks each of which is composed of codes corresponding to a plurality of pixels and encodes the code group by the code block as a unit.
Claim 6
Dependent Claim
23 words
A device according to claim 5, wherein the encoding circuit includes an orthogonal transforming circuit for orthogonal transforming each of the code blocks.
Claim 7
Dependent Claim
24 words
A device according to claim 5, wherein the motion detection circuit detects a motion of the portions corresponding to each of the code blocks.
Claim 8
Dependent Claim
54 words
A device according to claim 1, wherein said input means inputs encoded codes encoded for compressing an amount of data thereof as the image signal, and said plurality of processing means further includes a decoding circuit for decoding one of the plurality of code groups by using an output of the motion detection circuit.
Claim 9
Dependent Claim
79 words
A device according to claim 8, wherein said decoding circuit includes an addition circuit for adding codes of a previous picture to differential codes which indicates a difference between codes of a present picture and the codes of the previous picture and a motion compensation circuit for supplying correlative codes of the previous picture to the differential codes to the adding circuit by varying a timing to be supplied in accordance with the output of the motion detection circuit.
Claim 10
Dependent Claim
41 words
A device according to claim 8, wherein said input means further inputs motion vector codes which indicate directions and extents of motions of images and the motion detection circuit detects the motion vector codes among codes inputted by said input means.
Claim 11
Dependent Claim
22 words
A device according to claim 1, wherein the motion detection circuit detects motion vectors which indicate direction and extent of image movement.
Claim 12
Dependent Claim
40 words
A device according to claim 11, wherein each of said plurality of processing means further includes an encoding circuit for encoding one of the plurality of code groups to compress an amount of data thereof by using the motion vectors.
Claim 13
Dependent Claim
40 words
A device according to claim 11, wherein each of said plurality of processing means further includes a decoding circuit for decoding one of the plurality of code groups to expand an amount of data thereof by using the motion vectors.
Claim 14
Dependent Claim
30 words
A device according to claim 1, wherein each of the plurality of code groups corresponds to pixels which are in one of unseparated areas into which one picture is divided.
Claim 15
Dependent Claim
45 words
A device according to claim 14, wherein each of said plurality of processing means further includes handling means for handling a part of the code group to another processing means and receiving means for receiving a part of another code group from another processing means.
Claim 16
Dependent Claim
39 words
A device according to claim 14, wherein the motion detection circuit detects motion vectors which indicate directions and extents of motions of images, and said motion vectors corresponding to close pixels to boundaries among the unseparated areas are limited.
Claim 17
Dependent Claim
84 words
An image processing device, comprising input means for inputting an image signal; dividing means for dividing the image signal into a plurality of code groups, each of the plurality of code groups corresponding to pixels which are in one of unseparated areas into which one picture is divided; and a plurality of processing means for processing the plurality of code groups respectively, each of said plurality of processing means including handing means for handing a part of the code group to another processing means.
Claim 18
Dependent Claim
28 words
A device according to claim 17, wherein the part of the code group includes codes corresponding to pixels which are closed to a boundary between the unseparated areas.
Claim 19
Dependent Claim
34 words
A device according to claim 17, wherein each of said plurality of processing means includes a motion detection circuit for detecting a motion of the image by using the part of the code group.
Claim 20
Dependent Claim
44 words
A device according to claim 19, wherein each of said plurality of processing means further includes an encoding circuit for encoding one of the plurality of code groups to compress an amount of data thereof by using an output of the motion detection circuit.
Claim 21
Dependent Claim
50 words
A device according to claim 20, wherein the encoding circuit includes a dividing circuit for further dividing the code group into a pluraltiy of code blocks each of which composed of codes corresponding to a plurality of pixels and encodes the code group by the code block as a unit.
Claim 22
Dependent Claim
24 words
A device according to claim 21, wherein the motion detection circuit detects a motion of each portions corresponding to each of the code blocks.
Claim 23
Dependent Claim
72 words
An image processing device, comprising input means for inputting an image signal; separating means for separating a plurality of code groups from the image signal, each of the plurality of code groups corresponding to pixels which are in one of a plurality of unseparated areas in one picture, and the plurality of unseparated areas partly overlapping each other; and a plurality of processing means for processing the plurality of code groups respectively.
Claim 24
Dependent Claim
34 words
A device according to claim 23, wherein each of said plurality of processing means includes a motion detection circuit for detecting a motion of the image by using the part of the code group.
Claim 25
Dependent Claim
75 words
An image processing device, comprising input means for inputting an image signal; dividing means for dividing each image signal into a plurality of code groups, each of the plurality of code groups corresponding to pixels which are in one of unseparated areas into which one picture is divided; and a plurality of processing means for processing the plurality of code groups respectively, each processing means being able to use a part of other code groups.
Claim 26
Dependent Claim
107 words
An image processing device, comprising input means for inputting an image signal; dividing means for dividing the image signal into a plurality of code blocks, each of the plurality of code blocks composed of codes corresponding to a plurality of pixels which are closed to each other; motion detection means for detecting motions of the image by each portions corresponding to each of the plurality of code blocks; and encoding means for encoding the image signal by each of the plurality of code blocks as a unit to compress an amount of data of the image signal, said encoding means utilising outputs of the motion detection means.
Claim 27
Dependent Claim
23 words
A device according to claim 26, wherein the encoding means includes an orthogonal transforming circuit for orthogonal transforming each of the code blocks.
Claim 28
Dependent Claim
74 words
A device according to claim 26, wherein said encoding means includes a calculation circuit for calculating a difference between codes of a present picture to be encoded and codes of a previous picture, and a motion compensation circuit for supplying correlative codes of the previous picture to the codes of the present picture to the calculation circuit by varying a timing to be supplied in accordance with the output of the motion detection circuit.
Claim 29
Dependent Claim
34 words
A device according to claim 28, wherein the motion detection circuit detects motion vectors which indicate direction and extents of motions of images and the motion compensation circuit operates according to the motion vectors.
References Cited (Backward Citations)
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