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US5508743A
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Moving image signal coding apparatus and moving image signal coding control method
Assignee: Canon Inc
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Filing: 1992-12-03
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Granted: 1996-04-16
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Expires: 2012-12-03
Abstract
Abstract A moving image signal coding apparatus and moving image signal coding method dividing one frame of the moving image signal into a plurality of areas which may possibly overlap each other and refreshing the areas at different periods corresponding to an independent non-overlapped range at the circumferential portion of the frame and to an overlapped range at the central portion. Further, a specific area in the frame can be encoded by selectively using inter-frame prediction coding and intra-frame prediction coding.
Inventors
- 👤 Yoshio Iizuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:37
CPC Classifications
H; H04; H04N; H04N19/00; H04N19/10; H04N19/169; H04N19/17; H04N19/102; H04N19/103; H04N19/107; H04N19/50; H04N19/503; H04N19/60; H04N19/61; H04N19/30
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
65 words
A moving image signal coding apparatus which encodes a moving image signal by inter-frame prediction coding and refreshing without inter-frame prediction, comprising: division means for dividing one frame of the moving image signal into a plurality of areas possible to overlap with each other; and means for performing refreshing in the areas at different periods corresponding to an independent non-overlapped range and an overlapped range.
Claim 2
Dependent Claim
65 words
A moving image signal coding apparatus which encodes a moving image signal by inter-frame prediction coding and refreshing without inter-frame prediction, comprising: division means for dividing one frame of the moving image signal into a plurality of areas possible to overlap with each other; and means for performing refreshing in the areas at different periods corresponding to an independent non-overlapped range and an overlapped range.
Claim 3
Dependent Claim
45 words
The apparatus according to claim 1, wherein the independent non-overlapped range and the overlapped range are both rectangular, and wherein the independent range is positioned at the circumferential portion of the frame, and the overlapped range is positioned at the central portion of the frame.
Claim 4
Dependent Claim
22 words
The apparatus according to claim 1, wherein the refreshing is applied to the overlapped range more frequently than to the independent range.
Claim 5
Dependent Claim
31 words
The apparatus according to claim 1, wherein the independent range and the overlapped range are further divided into a plurality of blocks, and wherein the refreshing is performed by block unit.
Claim 6
Dependent Claim
33 words
The apparatus according to claim 4, wherein the number of the blocks to be refreshed is equal to or less than the number of the plurality of areas divided by said division means.
Claim 7
Dependent Claim
65 words
A moving image signal coding control method for encoding a moving image signal by inter-frame prediction coding and refreshing without inter-frame prediction, comprising: a step of dividing one frame of the moving image signal into a plurality of areas possible to overlap each other; and a step of performing refreshing in the areas at different periods corresponding to an independent range and an overlapped range.
Claim 8
Dependent Claim
65 words
A moving image signal coding control method for encoding a moving image signal by inter-frame prediction coding and refreshing without inter-frame prediction, comprising: a step of dividing one frame of the moving image signal into a plurality of areas possible to overlap each other; and a step of performing refreshing in the areas at different periods corresponding to an independent range and an overlapped range.
Claim 9
Dependent Claim
45 words
The method according to claim 6, wherein the independent non-overlapped range and the overlapped range are both rectangular, and wherein the independent range is positioned at the circumferential portion of the frame, and the overlapped region is positioned at the central portion of the frame.
Claim 10
Dependent Claim
22 words
The method according to claim 6, wherein the refreshing is applied to the overlapped range more frequently than to the independent range.
Claim 11
Dependent Claim
31 words
The method according to claim 6, wherein the independent range and the overlapped range are further divided into a plurality of blocks, and wherein the refreshing is performed by block unit.
Claim 12
Dependent Claim
32 words
The method according to claim 9, wherein the number of blocks to be refreshed is equal to or less than the number of the plurality of areas produced by said dividing step.
References Cited (Backward Citations)
US5036391A
Cited
US4935953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-16 | 1999-10-16 | 2000-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-16 | 2003-10-16 | 2004-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-16 | 2007-10-16 | 2008-04-16 | $7700.00 | Window Closed / Lapsed |