Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
171 words
A method of coding a color component of an image signal sequence, the image signal sequence comprising a plurality of image signals, the method comprising the steps of: filtering the color component of the image signal sequence into a plurality of subband image signals, the filtering step including generating a signal reflecting a high-pass temporal filtering of the color component of the image signal sequence; coding one or more pixel signals of a first subband image signal, the first subband image signal reflecting an image structure of the color component of the image signal sequence; and coding one or more pixel signals of a second subband image signal, the second subband image signal reflecting image object motion information of the color component of the image signal sequence, the second subband image signal further reflecting substantially the lowest quarter of the vertical spatial frequencies and substantially the lowest quarter of the horizontal spatial frequencies included in the signal reflecting a high-pass temporal filtering of the color component of the image signal sequence.
Claim 2
Independent Claim
171 words
A method of coding a color component of an image signal sequence, the image signal sequence comprising a plurality of image signals, the method comprising the steps of: filtering the color component of the image signal sequence into a plurality of subband image signals, the filtering step including generating a signal reflecting a high-pass temporal filtering of the color component of the image signal sequence; coding one or more pixel signals of a first subband image signal, the first subband image signal reflecting an image structure of the color component of the image signal sequence; and coding one or more pixel signals of a second subband image signal, the second subband image signal reflecting image object motion information of the color component of the image signal sequence, the second subband image signal further reflecting substantially the lowest quarter of the vertical spatial frequencies and substantially the lowest quarter of the horizontal spatial frequencies included in the signal reflecting a high-pass temporal filtering of the color component of the image signal sequence.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein the image structure reflects low spatial and temporal frequencies of the color component of the image signal sequence.
Claim 4
Dependent Claim
33 words
The method of claim 1 wherein one or more pixel signals of the second subband image signal are selected for coding responsive to signal energy reflected in said one or more pixel signals.
Claim 5
Dependent Claim
20 words
The method of claim 3 wherein the signal energy reflected in said one or more pixel signals exceeds a threshold.
Claim 6
Dependent Claim
40 words
The method of claim 1 further comprising the step of generating a first signal so that one or more pixel signals of the first subband image signal may be represented by one or more previously decoded first subband pixel signals.
Claim 7
Dependent Claim
39 words
The method of claim 5 wherein the generating step comprises a step of comparing a first subband pixel signal with a previous first subband pixel signal to determine whether a difference between the compared signals satisfies an error criterion.
Claim 8
Dependent Claim
33 words
The method of claim 1 further comprising the step of: coding one or more pixel signals of a third subband image signal, the third subband image signal reflecting edges of moving image objects.
Claim 9
Dependent Claim
18 words
The method of claim 7 wherein the third subband image signal reflects substantially vertical edges of moving objects.
Claim 10
Dependent Claim
18 words
The method of claim 7 wherein the third subband image signal reflects substantially horizontal edges of moving objects.
Claim 11
Dependent Claim
33 words
The method of claim 7 wherein one or more pixel signals of the third subband image signal are selected for coding responsive to signal energy reflected in said one or more pixel signals.
Claim 12
Dependent Claim
13 words
The method of claim 1 wherein the color component is a chrominance component.