Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
An image signal encoder having means for encoding pixels of an image in a manner suitable for eventual transmission to a receiving apparatus, the improvement comprising: means for identifying at least two pixel information sets, with said identifying keyed to a measure of importance associated with the correct reception of said pixel information by said receiving apparatus; and means for coding the pixel information of each set in a manner related to the measure of importance associated with the correct reception of said pixel information by said receiving apparatus.
Claim 2
Dependent Claim
72 words
The coder of claim 1 wherein the pixel information of a first set is encoded to yield a first level of assurance that the information will be correctly received by said receiving apparatus, wherein the pixel information of a second set is encoded to yield a second level of assurance that the information will be correctly received by said receiving apparatus, and wherein said first level is higher than said second level.
Claim 3
Dependent Claim
56 words
The coder of claim 2 where codes used for encoding are from a set codes where some of said codes in said set are characterized by a lesser sensitivity to noise than others of said codes in said set, and the codes with lesser sensitivity are used to encode the pixel information of said first set.
Claim 4
Dependent Claim
33 words
The encoder of claim 3 where said codes that are characterized by a lesser sensitivity are codes that have a larger Hamming distance to other codes than said others of said codes. that
Claim 5
Dependent Claim
52 words
The coder of claim 2 where codes used for encoding information in said first set include one form of error correction codes and codes used in encoding information is said second set include another form of error correction codes, which other form is less able to correct errors than said one form.
Claim 6
Dependent Claim
23 words
The coder of claim 2 where the information identified for said first set is related to the spatial frequency content of the pixels.
Claim 7
Dependent Claim
26 words
The coder of claim 2 where the information identified for said first set is related to the temporal change of the image from the previous image.
Claim 8
Dependent Claim
21 words
The coder of claim 2 where the information identified for the first set is related to the color of the pixels.
Claim 9
Dependent Claim
85 words
An image signal encoder having means for encoding pixels of an image, the improvement comprising: means for grouping said pixels of an image in groups of one or more pixels, means for identifying at least two sets to which said groups belong, with said identifying keyed to a measure of importance associated with the correct reception of a group; and means for coding the groups of each set in a manner related to the measure of importance associated with the correct reception of a group.
Claim 10
Dependent Claim
68 words
The encoder of claim 2 wherein said means for encoding includes means for grouping image pixels, means for transforming said groups of pixels, and means for representing the transform of each group of pixels with a codebook vector identifier and a quantized information packet having cells that represent different frequency components; and said means for identifying selects frequency components lower than a preselected threshold for said first set.
Claim 11
Dependent Claim
73 words
The encoder of claim 2 wherein said means for encoding includes means for grouping image pixels, means for transforming said groups of pixels, and means for representing the transform of each group of pixels with a codebook vector identifier and a quantized information packet having cells that represent different frequency components; and said means for identifying selects quantized information packets where frequency components lower than a preselected threshold predominate for said first set.
Claim 12
Dependent Claim
94 words
An image signal encoder loop comprising: first means for identifying and coding at least two pixel information sets, with said identifying keyed to a measure of importance associated with the correct reception of said pixel information by said receiving apparatus; second means for decoding less than all of said sets; third means for storing signals that are related to decoded output signals of said second means; fourth means for subtracting signals that are related to signals stored in said third means from applied input signals, and for applying the results to said first means.