Apparatus and method of smoothing MAPS compressed image data

Claim 3

A method as claimed in claim 1 wherein the storing step includes storing the coefficients in a binary addressable memory and the retrieving step includes generating binary numbers wherein the least significant bits are the address and the most significant bit indicates the equal group being accessed.

Claim 4

A method as claimed in claim 1 wherein the storing step includes storing the coefficients in an addressable memory and reducing the amount of memory utilized by dividing the addressable memory into independent sections, dividing the surround areas into groups with each group containing at least two surround areas which are never accessed simultaneously and storing coefficients for the surround areas in each group in a different section of the addressable memory.

Claim 7

A method as claimed in claim 4 wherein the storing step includes storing the information in an addressable memory, dividing the addressable memory into independent sections, dividing the information into groups with each group containing at least two sets of information which are never accessed simultaneously and storing each group in a different section of the addressable memory.

Claim 8

Apparatus for smoothing MAPS compressed image data including video data and coefficients for a central block of pixels and video data and coefficients for a plurality of surround areas, said apparatus comprising: addressble memory means having stored therein coefficients for the plurality of surround areas, the coefficients being arranged symmetrically so they are divided into two equal groups with the coefficients for one of the equal groups being stored in said memory means; address generating means connected to said addressable memory means for generating binary numbers the least significant bits of which are the address of the stored coefficient being accessed and the most significant bit of which determines the equal group being accessed: and circuitry connected to said memory means and said address generating means for calculating the output values for any pixel (n) in the central block of pixels from the equation ##EQU3## where: D=video data for the central block, C n =coefficient for the central block, DS i =video data for the surround areas 1 through i, and CS i =coefficient for the surround areas 1 through i.

Claim 9

Apparatus for smoothing MAPS compressed image data including video data and coefficients for a central block of pixels and video data and coefficients for a plurality of surround areas, said apparatus comprising: addressble memory means having stored therein coefficients for the plurality of surround areas, the coefficients being arranged symmetrically so they are divided into two equal groups with the coefficients for one of the equal groups being stored in said memory means; address generating means connected to said addressable memory means for generating binary numbers the least significant bits of which are the address of the stored coefficient being accessed and the most significant bit of which determines the equal group being accessed: and circuitry connected to said memory means and said address generating means for calculating the output values for any pixel (n) in the central block of pixels from the equation ##EQU3## where: D=video data for the central block, C n =coefficient for the central block, DS i =video data for the surround areas 1 through i, and CS i =coefficient for the surround areas 1 through i.

Claim 10

Apparatus as claimed in claim 6 wherein the addressable memory means further includes a plurality of separately addressable sections, the surround areas are divided into groups with each group containing at least two surround areas which are never accessed simultaneously and coefficients for the surround areas in each group are stored in different sections of said addressable memory.

Claim 11

Apparatus as claimed in claim 7 wherein the circuitry includes a stage of apparatus for each group of surround areas and the stages are coupled together to provide continuous processing of the video data.

Claim 12

Apparatus as claimed in claim 8 wherein there are twelve surround areas divided into five groups and the circuitry includes a stage for processing the video data and coefficients of the central block and five stages for processing the video data and coefficients of the five groups.