US5481308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for synthesizing subband video images
Assignee: AT&T Inc
•
Filing: 1995-03-15
•
Granted: 1996-01-02
•
Expires: 2015-03-15
Abstract
Abstract A method of coding a set of multi- level signals, such as video signals comprises filtering the set of multi-level signals into one or more sets of multi-level sub-band signals; allocating a first quantity of bits for use in coding a first set of sub-band signals; coding the first set of multi-level sub-band signals using zero or more of the first quantity of allocated bits; allocating a second quantity of bits for use in coding a second set of sub-band signals, the second quantity of bits comprising zero or more of the first quantity of bits not used in coding the first set of multi-level sub-band signals; and coding the second set of multi-level sub-band signals using zero or more of the second quantity of allocated bits. Three examples of the method am provided. A hardware implementation involving the use of digital signal processors operating in parallel is also provided.
Inventors
- 👤 John Hartung
- 👤 Arnaud E. Jacquin
- 👤 Thomas A. Michel
- 👤 Christine I. Podilchuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:56
CPC Classifications
H; H04; H04N; H04N19/00; H04N19/50; H04N19/503; H04N19/507; H04N19/10; H04N19/102; H04N19/117; H04N19/124; H04N19/126; H04N19/132; H04N19/134; H04N19/136; H04N19/14; H04N19/169; H04N19/17; H04N19/176; H04N19/18; H04N19/182; H04N19/186; H04N19/189; H04N19/192; H04N19/44; H04N19/46; H04N19/60; H04N19/61; H04N19/62; H04N19/63; H04N19/90; H04N19/94; H04N19/115; H04N19/146; H04N19/152; H04N19/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
229 words
A method of synthesizing an image based on a plurality of coded sub-band image signals corresponding to a plurality of sub-bands into which an original image signal has been subdivided, the method comprising the steps of: decoding a coded portion of a given sub-band image signal to form one or more decoded portions, said coded portion indicated by coded portion indicating signals received from a communication channel wherein the given sub-band image signal is an image signal corresponding to a given one of the plurality of coded image sub-band signals; for a portion of given the sub-band image signal not coded, adopting a corresponding portion of a previously decoded sub-band image to form one or more adopted portions, said adopted portions identified by adopted portion identifying signals received from said communication channel; zeroing a portion of the given sub-band image signal not decoded and not adopted to form one or more zeroed portion, said zeroed portions identified by zeroed portion identifying signals received from said communication channel; for each of said plurality of coded sub-band image signals, forming a generated a sub-band image, where at least one the generated sub-band images is based on a combination of said one or more decoded portions, said one or more adopted portions and said one or more the zeroed portions; and synthesizing an image based on the plurality of generated sub-band images.
Claim 2
Independent Claim
229 words
A method of synthesizing an image based on a plurality of coded sub-band image signals corresponding to a plurality of sub-bands into which an original image signal has been subdivided, the method comprising the steps of: decoding a coded portion of a given sub-band image signal to form one or more decoded portions, said coded portion indicated by coded portion indicating signals received from a communication channel wherein the given sub-band image signal is an image signal corresponding to a given one of the plurality of coded image sub-band signals; for a portion of given the sub-band image signal not coded, adopting a corresponding portion of a previously decoded sub-band image to form one or more adopted portions, said adopted portions identified by adopted portion identifying signals received from said communication channel; zeroing a portion of the given sub-band image signal not decoded and not adopted to form one or more zeroed portion, said zeroed portions identified by zeroed portion identifying signals received from said communication channel; for each of said plurality of coded sub-band image signals, forming a generated a sub-band image, where at least one the generated sub-band images is based on a combination of said one or more decoded portions, said one or more adopted portions and said one or more the zeroed portions; and synthesizing an image based on the plurality of generated sub-band images.
Claim 3
Independent Claim
229 words
An apparatus for synthesizing an image based on a plurality of coded sub-band image signals corresponding to a plurality of sub-bands into which an original image has been subdivided, the apparatus comprising: means for decoding a coded portion of a given sub-band image to form a decoded portions, said coded portion indicated by coded portion indicating signals received from a communication channel, wherein the given sub-band image signal is an image signal corresponding to a given one of the plurality of coded sub-band image signals; means tier adopting a portion of a previously decoded sub-band image signal thereby forming one or more adopted portions, said adopted portions corresponding to an uncoded portion of the sub-band image, said adopted portion identified by adopted portion identifying signals received from said communication channel; means for zeroing a portion of the given sub-band image signal not decoded and not adopted, thereby forming one or more zeroed portions, said zeroed portions identified by zeroed portion identifying signals received from said communication channel; means for generating a sub-band image for each of said plurality of coded sub-band image signals, where at least one of the generated sub-band images is based on a combination of said one or more decoded portions, said one or more adopted portions, and said one or more zeroed portions; and means for synthesizing an image based on the generated sub-band images.
Claim 4
Independent Claim
229 words
An apparatus for synthesizing an image based on a plurality of coded sub-band image signals corresponding to a plurality of sub-bands into which an original image has been subdivided, the apparatus comprising: means for decoding a coded portion of a given sub-band image to form a decoded portions, said coded portion indicated by coded portion indicating signals received from a communication channel, wherein the given sub-band image signal is an image signal corresponding to a given one of the plurality of coded sub-band image signals; means tier adopting a portion of a previously decoded sub-band image signal thereby forming one or more adopted portions, said adopted portions corresponding to an uncoded portion of the sub-band image, said adopted portion identified by adopted portion identifying signals received from said communication channel; means for zeroing a portion of the given sub-band image signal not decoded and not adopted, thereby forming one or more zeroed portions, said zeroed portions identified by zeroed portion identifying signals received from said communication channel; means for generating a sub-band image for each of said plurality of coded sub-band image signals, where at least one of the generated sub-band images is based on a combination of said one or more decoded portions, said one or more adopted portions, and said one or more zeroed portions; and means for synthesizing an image based on the generated sub-band images.
References Cited (Backward Citations)
US4751742A
Cited
US4943855A
Cited
US5202760A
Cited
EP0396368A2
Cited
US5067015A
Cited
US4969040A
Cited
US5063444A
Cited
US5136374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-01 | 1999-07-03 | 2000-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-01 | 2003-07-03 | 2004-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-01 | 2007-07-03 | 2008-01-02 | $7700.00 | Window Closed / Lapsed |