Patent ID: 7257648

Claim:
A logical compression system, comprising: means for determining a compression function for a data set having a plurality of individual records, the compression function determined from semantic information that is common to the individual records in the data set, the semantic information describing the data in each of the individual records; means for generating an encoded data set using the compression function by removing the semantic information that is common to the individual records in the data set; means for determining an expansion function for the encoded data set, the expansion function including the semantic information that is common to the individual records in the data set; means for compressing the encoded data set using a content compression algorithm to generate a compressed encoded data set; means for transmitting the expansion function and the compressed encoded data set to a destination device; means for decompressing the compressed encoded data set; and means for expanding the encoded data set using the expansion function, wherein individual records in the encoded data set are expanded to include the common semantic information.