Patent US5486862A successfully refreshed from Google Patents.
US5486862A
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Motion picture encoding system
Assignee: Sony Corp
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Filing: 1995-05-02
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Granted: 1996-01-23
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Expires: 2015-05-02
Abstract
Abstract In a motion picture encoding system, which permits encoding of motion picture with high encoding efficiency and also permits improvement of the picture quality, priority orders are set preliminarily to obtain encoding matched to man's sight characteristics. Preferential high picture quality encoding of a picture portion attracting attention can be obtained by setting a high priority order for that portion. An optimum combination intra- and forward, rearward and bi-directional predictive inter-frame encoding pattern can be selected for every N frames by preliminarily collecting information of a motion picture sequence to be encoded.
Inventors
- 👤 Yoichi Yagasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:27
CPC Classifications
H; H04; H04N; H04N19/00; H04N19/50; H04N19/503; H04N19/51; H04N19/577; H04N19/10; H04N19/102; H04N19/103; H04N19/107; H04N19/60; H04N19/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A motion picture encoding system for either intra-frame encoding or inter-frame encoding a motion picture which includes a sequence of frames, comprising: a first encoding means for encoding at least a portion of the motion picture by intra-frame encoding; a second encoding means for encoding at least a portion of the motion picture by inter-frame encoding; means for obtaining inter-frame difference data for a current frame; means for obtaining inter-frame difference data for a frame next to be encoded; and means for selecting the first encoding means if the difference data for the next frame to be encoded is greater than a multiple of a predetermined integer (equal to or greater than one) times the difference data for the current frame, and otherwise selecting the second encoding means.
Claim 2
Dependent Claim
128 words
A motion picture encoding system for either intra-frame encoding or inter-frame encoding a motion picture which includes a sequence of frames, comprising: a first encoding means for encoding at least a portion of the motion picture by intra-frame encoding; a second encoding means for encoding at least a portion of the motion picture by inter-frame encoding; means for obtaining inter-frame difference data for a current frame; means for obtaining inter-frame difference data for a frame next to be encoded; and means for selecting the first encoding means if the difference data for the next frame to be encoded is greater than a multiple of a predetermined integer (equal to or greater than one) times the difference data for the current frame, and otherwise selecting the second encoding means.
References Cited (Backward Citations)
US4651206A
Cited
US4837618A
Cited
US5079630A
Cited
US4985768A
Cited
US4987490A
Cited
US5144427A
Cited
US5057918A
Cited
US5144426A
Cited
US5089888A
Cited
US5136371A
Cited
US5150432A
Cited
US5091782A
Cited
US5068724A
Cited
US5136378A
Cited
US5038209A
Cited
US5237410A
Cited
US5260783A
Cited
US5357281A
Cited
US5365271A
Cited
US5241383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-22 | 1999-07-24 | 2000-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-22 | 2003-07-24 | 2004-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-22 | 2007-07-24 | 2008-01-23 | $7700.00 | Window Closed / Lapsed |