Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
A system for reducing the bandwidth required for the transmission of two-dimensional video data comprising: two-dimensional transformer means for transforming said video data into arrays of transform coefficients, transform coefficient compressor means for separating the transform coefficients into zonal coefficients, all of which are transmitted, and non-zonal coefficients of which the largest "n" coefficients are selected for transmission, for arranging the zonal coefficients such that such zonal coefficients may be identified by their position in the stream of data, and for attaching identification data to the non-zonal coefficients; and transmitting modem means for transmitting the coefficients output from the transform coefficient compressor.
Claim 2
Independent Claim
102 words
A system for reducing the bandwidth required for the transmission of two-dimensional video data comprising: two-dimensional transformer means for transforming said video data into arrays of transform coefficients, transform coefficient compressor means for separating the transform coefficients into zonal coefficients, all of which are transmitted, and non-zonal coefficients of which the largest "n" coefficients are selected for transmission, for arranging the zonal coefficients such that such zonal coefficients may be identified by their position in the stream of data, and for attaching identification data to the non-zonal coefficients; and transmitting modem means for transmitting the coefficients output from the transform coefficient compressor.
Claim 3
Dependent Claim
118 words
The system of claim 1 wherein the transform coefficient compressor means comprise means for separating the transform coefficients into zonal coefficients, all of which are transmitted, and non-zonal coefficients of which those non-zonal coefficients which exceed an adaptive threshold are selected for transmission, arranging and identifying means for arranging the zonal coefficients such that such zonal coefficients may be identified by their position in the stream of data, and for attaching identification data to the non-zonal coefficients, transmission buffer means for temporarily storing coefficients prior to transmission by the transmitting modem means, and means for periodically and automatically adjusting the adaptive threshold so as to maintain the transmission bandwidth constant and avoid overflow in the transmission buffer means.
Claim 4
Dependent Claim
48 words
The system of claim 2 and additionally comprising: receiving modem means for receiving the transform coefficients, transform array reconstitutor means for reconstructing the array of transform coefficients, and inverse two-dimensional transformer means for obtaining an approximation to the original two-dimensional video data from the arrays of transform coefficients.
Claim 5
Dependent Claim
71 words
The system of claim 2 and additionally comprising: means for adding parity bits to the zonal coefficients prior to transmission, receiving modem means for receiving the transform coefficients, error corrector and array reconstitutor means for identifying and correcting errors in the zonal coefficients and reconstituting the arrays of transform coefficients, and inverse two-dimensional transformer means for obtaining an approximation to the original two-dimensional video data from the arrays of transform coefficients.
Claim 6
Dependent Claim
48 words
The system of claim 1 and additionally comprising: receiving modem means for receiving the transform coefficients, transform array reconstitutor means for reconstructing the arrays of transform coefficients, and inverse two-dimensional transformer means for obtaining an approximation to the original two-dimensional video data from the arrays of transform coefficients.
Claim 7
Dependent Claim
71 words
The system of claim 1 and additionally comprising: means for adding parity bits to the zonal coefficients prior to transmission, receiving modem means for receiving the transform coefficients, error corrector and array reconstitutor means for identifying and correcting errors in the zonal coefficients and reconstituting the arrays of transform coefficients, and inverse two-dimensional transformer means for obtaining an approximation to the original two-dimensional video data from the arrays of transform coefficients.
Claim 8
Dependent Claim
62 words
The system of claim 1 wherein said two-dimensional transformer means (configuration "B") comprises: one-dimensional transformer means for transforming the video data in one dimension, a pair of transposer means for transposing the transform coefficients, a pair of selector means for selecting and interchanging the pair of transposer means, and second one-dimensional transformer means for transforming the video data in the second dimension.